A bridge wind tunnel wind speed and vehicle force measurement test system and method

Abstract

This invention discloses a wind tunnel wind speed and vehicle force measurement testing system and method for bridges, relating to the field of bridge wind engineering technology. It includes a vehicle model, a wind measurement platform, and a force measurement platform. The wind measurement platform, located inside the wind tunnel, includes a wind-measuring crane for measuring wind speed and direction at different locations. The force measurement platform, located inside the bridge model, includes a force balance and a mechanical servo system. The vehicle model is locked to the force balance, facilitating timely acquisition of the vehicle model's six-component forces during the test. The mechanical servo system is used to transport and move the force balance. Through the cooperation of the wind measurement platform and the force measurement platform, this invention can continuously and synchronously acquire wind speed and direction for each lane under various test conditions, as well as the corresponding six-component forces of the vehicle model. This reduces the number of times the wind tunnel needs to be shut down for adjustments to operating conditions and equipment, minimizes human interference, and improves the efficiency and accuracy of the test.

Description

Technical Field

[0001] The invention relates to the technical field of bridge wind engineering, and in particular to a bridge wind tunnel wind speed and vehicle force measurement test system and method. Background Art

[0002] In the study of bridge wind engineering, in order to compare the advantages and disadvantages of different schemes, the measurement tests of the same or several physical quantities of different model schemes are often carried out. In the bridge speed test and vehicle force test, in order to measure the wind speed of points in the vicinity of the model and the six-component force of cars in different lanes under different model schemes, the wind speed at different locations and the six-component force of different lanes and car model schemes are mainly measured by anemometers and force balances.

[0003] At present, wind tunnel tests are mainly carried out manually to move the position of anemometers and force balances and replace different car model schemes. However, manually moving the measuring equipment cannot guarantee the accuracy of the moving position on the one hand; on the other hand, in the process of moving the sensor, because personnel need to enter and exit the laboratory, they have to temporarily stop running the fan and other equipment, which will make it difficult to ensure the uniformity of the flow conditions of the speed and force test, and it will take a lot of time. At present, with heavy scientific research tasks, this will occupy too many laboratory resources and increase the cost of the test. Therefore, how to efficiently realize uninterrupted wind tunnel tests and car model replacements with multiple wind speed conditions, multiple measuring points, and multiple lanes to obtain the test results closest to the actual ones, maximize the uniformity of the test conditions of the speed test and the force test, and reduce the test condition interference errors caused by manual movement has become a problem that needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a bridge wind tunnel wind speed and vehicle force measurement test system and method to solve the problems existing in the above-mentioned prior art, reduce manual interference, and improve the efficiency and accuracy of the test.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a bridge wind tunnel wind speed and vehicle force measurement test system, comprising a vehicle model, a force measuring balance, a wind measuring platform and a force measuring platform, wherein the wind measuring platform comprises a wind measuring overhead crane, the wind measuring platform is arranged inside the wind tunnel and is used to measure wind speeds and wind directions at different positions, the force measuring platform is arranged inside the bridge model, the force measuring platform comprises a mechanical servo system, the vehicle model is locked on the force measuring balance, the force measuring balance is used to measure the six-component force of the vehicle model, and the mechanical servo system is used to transport and move the force measuring balance.

[0007] Preferably, a bearing platform is provided at the lower end of the vehicle model, four through holes are opened on the bearing platform, a force measuring rod is placed in each of the through holes, the four wheels of the vehicle model are respectively arranged at the upper ends of the four force measuring rods, the lower ends of the force measuring rods are connected to the force measuring balance, and the bearing platform is slidably connected to the mechanical servo system.

[0008] Preferably, the force measuring balance includes a shell, a top plate is provided on the top of the shell, a positioning hole for the force measuring rod to pass through is provided on the top plate, a clamping device is provided inside the shell, a force measuring inner ring is provided between the clamping device and the shell, the clamping device is used to clamp the force measuring rod and bring the force measuring rod into contact with the slot of the force measuring inner ring, a locking groove is provided at the center of the clamping device, and the locking groove matches the lifting rod key plate of the mechanical servo system, a bottom plate is provided at the bottom of the shell, the bottom plate is made of magnetic conductive material, a through hole penetrating the bottom plate is provided at the center of the bottom plate, the through hole corresponds to the locking groove, a guide groove is provided at the bottom of the bottom plate, a battery, a wireless charging module and a Bluetooth transmitting module are provided on the bottom plate, a signal output window corresponding to the position of the Bluetooth transmitting module is provided on the shell, and the force measuring inner ring is electrically connected to the Bluetooth transceiver module through a piezoelectric module.

[0009] Preferably, the clamping device also includes a locking pressure plate, four spring pins and four pressure rods, the locking pressure plate is arranged on the outside of the locking groove, the spring pins are arranged on the outside of the locking pressure plate, a rotating shaft is arranged at the center of each of the pressure rods, one end of the pressure rod is in contact with one of the force measuring rods, and the other end of the pressure rod is in contact with one of the spring pins.

[0010] Preferably, the mechanical servo system comprises a balance warehouse, two rotating lifting devices, a moving track and a warehouse entry track, the balance warehouse comprises a circular carrying plate and a driving mechanism, a Bluetooth transceiver module is arranged at the center of the carrying plate, a plurality of convex grooves are evenly arranged on the upper circumference of the carrying plate, a through hole is provided in each of the convex grooves, a wireless charging coil is arranged on the outside of each of the through holes, a force measuring balance is arranged in each of the convex grooves, an inner gear ring is arranged at the lower end of the carrying plate, a first gear is arranged at the power output end of the driving mechanism, and the first gear is meshed with the inner gear ring;

[0011] The warehouse entry track is tilted, the higher end of the warehouse entry track is connected to one end of the mobile track, the lower end of the warehouse entry track is connected to the balance bin, one of the rotary lifting devices is located below the higher end of the warehouse entry track, and the other rotary lifting device is located below the balance bin, and the rotary lifting device can pass through the through hole and lift a force measuring balance to the other end of the mobile track;

[0012] The rotary lifting device comprises a lifting rod, the top of which is provided with a locking structure matching the force measuring balance, and the locking structure realizes locking and releasing of the force measuring balance and the vehicle model.

[0013] Preferably, the movable track includes a test bench bottom plate, a positioning groove is provided on the upper surface of the test bench bottom plate, the force measuring balance slides along the positioning groove, a plurality of electromagnets are provided on the lower surface of the test bench bottom plate, each of the electromagnets corresponds to a test position, test bench side plates are provided on both sides of the test bench bottom plate, a guide plate is provided on the outer side of one of the test bench side plates, an inverted V-shaped groove is provided on the top of the guide plate, a first threaded screw is provided on the outer side of the other test bench side plate, a stepping motor for driving the first threaded screw to rotate is provided at one end of the first threaded screw, and the vehicle model moves along the The first threaded screw and the inverted V-shaped slide groove slide, one end of the test bench bottom plate is provided with an exit, the other end of the test bench bottom plate is provided with an entrance, the exit corresponds to a force measuring balance on the balance bin, the rotary lifting device lifts the force measuring balance to the exit and locks the force measuring balance with the vehicle model, the entrance corresponds to the higher end of the entry track, the rotary lifting device releases the force measuring balance and the vehicle model located at the entrance and lowers the force measuring balance to the entry track, and the force measuring balance slides back to the balance bin by itself under the action of gravity.

[0014] Preferably, a sliding table is provided on the force measuring platform, and the sliding table includes a fixed cover plate located on both sides of the force measuring platform and a plurality of sliding cover plates located on the force measuring platform, each of the sliding cover plates is driven by a sliding mechanism, and each of the sliding mechanisms includes a first cover plate motor, two relatively arranged limit plates and two relatively arranged cover plate cantilevers, the sliding cover plate is arranged on the cover plate cantilever, and each of the limit plates is provided with a limit groove and a slide groove, the power output end of the first cover plate motor is transmission connected with a support rod, the two ends of the support rod respectively pass through the middle part of the cover plate cantilever and a second gear is arranged at both ends of the support rod, the second gear is meshed with the tooth shape of the slide groove, and also includes a sliding rod, the two ends of the sliding rod respectively pass through the end of the cover plate cantilever and are slidably arranged in the limit groove, and the limit groove and the slide groove are both bent.

[0015] Preferably, the wind measuring overhead travelling vehicle comprises an X-direction moving mechanism, a Y-direction moving mechanism and a Z-direction moving mechanism, the X-direction moving mechanism is slidably connected to the track via running wheels, the X-direction moving mechanism is slidably connected to the Y-direction moving mechanism, and the Z-direction moving mechanism is slidably connected to the X-direction moving mechanism.

[0016] Preferably, the X-direction moving mechanism comprises an X-direction driving structure, an X-direction threaded screw and an X-direction smooth guide rod, the X-direction threaded screw and the X-direction smooth guide rod are arranged in parallel, the power output end of the X-direction driving structure is transmission-connected with the X-direction threaded screw, the X-direction smooth guide rod is fixedly connected with the X-direction driving structure, and both ends of the X-direction threaded screw and the X-direction smooth guide rod are provided with a walking wheel;

[0017] The Y-direction moving mechanism comprises a Y-direction driving structure and a Y-direction threaded screw, the power output end of the Y-direction driving structure is transmission-connected to the Y-direction threaded screw, and the Y-direction threaded screw is threadedly connected to the X-direction driving structure;

[0018] The Z-direction moving mechanism includes a Z-direction driving structure and a wind measuring rod. The Z-direction driving structure is threadedly connected to the X-direction threaded screw, and the Z-direction driving structure is slidingly connected to the X-direction smooth guide rod. The power output end of the Z-direction driving structure is transmission-connected to the wind measuring rod. The wind measuring rod includes a Z-direction measuring arm and a measuring cantilever arranged at one end of the Z-direction measuring arm. A wind meter is arranged on the measuring cantilever, and the wind meter is used to measure wind speed and wind direction.

[0019] The present invention also provides a test method using the bridge wind tunnel wind speed and vehicle force measurement test system, comprising the following steps:

[0020] Step 1: Wind test;

[0021] Specifically include:

[0022] a1. Turn on the computer;

[0023] b1. Reset the wind measurement platform;

[0024] c1. Start wind test;

[0025] d1. Move the wind measuring overhead crane to a suitable location;

[0026] e1. Move the wind measuring rod to a suitable position;

[0027] f1. Transmit anemometer data;

[0028] g1. Determine whether it is necessary to continue measuring the wind force at other locations. If not, the wind measuring overhead crane returns to its position and is stored on one side of the wind tunnel, and the test is over. If it is necessary to continue measuring, repeat steps d1-f1 until all positions are measured, the wind measuring overhead crane returns to its position, and the test is over.

[0029] Step 2: Six-component force test;

[0030] Specifically include:

[0031] a2. Turn on the machine, reset the force measuring platform, place the vehicle model and move it to the initial position, and connect the wireless transmission system to the network;

[0032] b2. The force measuring balance self-checks. If the self-check is normal, the system marks the number as available. If one of the force measuring balances fails in self-check, the system marks the error and does not enable the force measuring balance in subsequent measurements.

[0033] c2. The test begins, the wind tunnel is started, and the system selects a suitable force measuring balance according to the experimenter's requirements, and the force measuring balance is rotated into place by the balance warehouse;

[0034] d2. Rotate the lifting device to lift the force measuring balance onto the moving track and lock the force measuring rod;

[0035] e2. The rotating lifting device is withdrawn, the sliding cover is opened, and the first threaded screw is driven to move the vehicle model to the measuring position. The electromagnet is energized to adsorb and fix the force balance;

[0036] f2. Close the sliding cover of the non-measuring position;

[0037] g2. Measurement starts and data is transmitted back;

[0038] h2. If the measuring position needs to be changed, repeat steps e2-g2; if the measuring position does not need to be changed, the measurement is completed, the sliding cover is opened, and the force balance is moved to the entrance;

[0039] i2. Rotate the balance bin to align the corresponding bin with the entry track;

[0040] j2. Rotate the lifting device upward, release the force measuring rod, and lower the force measuring balance to the warehouse track and slide it back to the balance warehouse;

[0041] k2. If you need to replace the force measuring balance, drive the first threaded screw to move the vehicle model to the exit, and repeat steps c2-j2;

[0042] l2. If it is necessary to further measure the six-component force of other vehicle models, change the vehicle model and repeat steps c2-j2; if not necessary, reset the system and the measurement ends.

[0043] Compared with the prior art, the present invention has achieved the following technical effects:

[0044] The present invention measures the wind speed and wind direction at different positions through a wind measuring platform, and measures the six-component force of a vehicle model through a force measuring platform. During the measurement process, the vehicle model is set on the force measuring balance, and a mechanical servo system realizes the transportation and movement of the force measuring balance. The present invention can synchronously collect the wind speed and wind direction of each lane under each working condition of the test and the corresponding six-component force of the vehicle model at any time and uninterruptedly through the cooperation of the wind measuring platform and the force measuring platform, thereby reducing the number of times the wind tunnel is shut down to adjust the working conditions and equipment, reducing human interference, and improving the efficiency and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 It is a schematic diagram of a force measuring platform of the present invention;

[0047] Figure 2 A schematic diagram of a vehicle model and a load-bearing platform of the present invention;

[0048] Figure 3 It is a schematic diagram of a force measuring balance of the present invention;

[0049] Figure 4 It is a schematic diagram of the bottom plate of the force measuring balance of the present invention;

[0050] Figure 5a A schematic diagram of a locking device of the present invention;

[0051] Figure 5b It is a second schematic diagram of the locking device of the present invention;

[0052] Figure 6 is a schematic diagram of a mechanical servo system of the present invention;

[0053] Figure 7 The moving track of the present invention is shown in FIG. Figure 1 ;

[0054] Figure 8 The moving track of the present invention is shown in FIG. Figure 2 ;

[0055] Fig. 9 It is a schematic diagram of the upper surface of the carrier plate of the present invention;

[0056] Fig.10 It is a schematic diagram of the lower surface of the carrying plate of the present invention;

[0057] Fig.11a A schematic diagram of a sliding mechanism of the present invention;

[0058] Fig.11b It is a second schematic diagram of the sliding mechanism of the present invention;

[0059] Fig.12 It is a schematic diagram of the vehicle model, moving track and sliding table of the present invention;

[0060] Fig.13 It is a schematic diagram of a wind measurement platform of the present invention;

[0061] Fig.14 It is a schematic diagram of a control system of the present invention;

[0062] Fig.15 A flow chart of the bridge wind tunnel wind force and vehicle force measurement test method of the present invention;

[0063] Among them: 1-vehicle model, 2-force measuring balance, 3-bearing platform, 4-force measuring rod, 5-housing, 6-top plate, 7-force measuring inner ring, 8-locking groove, 9-lifting rod key plate, 10-bottom plate, 11-guide groove, 12-battery, 13-wireless charging module, 14-Bluetooth transmitting module, 15-locking pressure plate, 16-spring bayonet, 17-pressure rod, 18-rotating lifting device, 19-warehouse track, 20-wireless charging coil, 21-through hole, 22-driving mechanism, 23-test bench bottom plate, 24-positioning convex groove, 25-electromagnet, 26-guide plate, 27-first threaded screw, 28-warehouse outlet, 29-warehouse entrance, 30-fixed cover plate, 31-sliding cover plate, 32-second gear, 33-limit Position plate, 34-cover cantilever, 35-limiting groove, 36-slide groove, 37-X-axis driving structure, 38-X-axis threaded screw, 39-X-axis smooth guide rod, 40-traveling wheel, 41-track, 42-Y-axis driving structure, 43-Y-axis threaded screw, 44-Z-axis driving structure, 45-Z-axis measuring arm, 46-wind meter, 47-positioning groove, 48-semi-thread, 49-moving track, 50-sliding mechanism, 51-first cover motor, 52-pressure plate, 53-second cover motor, 54-push rod, 55-base, 56-first connecting rod, 57-second connecting rod, 58-third connecting rod, 59-fourth connecting rod, 60-Y-axis slide groove, 61-first connecting rod, 62-second connecting rod, 63-torsion spring. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] The purpose of the present invention is to provide a bridge wind tunnel wind speed and vehicle force measurement test system and method to solve the problems existing in the above-mentioned prior art, reduce manual interference, and improve the efficiency and accuracy of the test.

[0066] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0067] Embodiment 1

[0068] like Figure 1-Figure 5a , Figure 6-11a , Figure 12-14 As shown: This embodiment provides a bridge wind tunnel wind speed and vehicle force measurement test system, including a vehicle model 1, a force measuring balance 2, a wind measuring platform and a force measuring platform, the wind measuring platform includes a wind measuring overhead crane, the wind measuring platform is arranged inside the wind tunnel and is used to measure wind speeds and wind directions at different positions, the force measuring platform is arranged inside the bridge model, the force measuring platform includes a mechanical servo system, the vehicle model 1 is locked on the force measuring balance 2, the force measuring balance 2 is used to measure the six-component force of the vehicle model 1, and the mechanical servo system is used to transport and move the force measuring balance 2. Through the cooperation of the wind measuring platform and the force measuring platform, this embodiment can synchronously collect the wind speed and direction of each lane under each working condition of the test and the corresponding six-component force of the vehicle model 1 at any time and uninterruptedly, reduce the number of times the wind tunnel is shut down to adjust the working conditions and equipment, reduce manual interference, and improve the efficiency and accuracy of the test.

[0069] In this embodiment, the vehicle model 1 is made according to the wheelbase, track width, and appearance of the vehicle, and the vehicle model 1 is marked, and the parameters are input into the data system to form a vehicle database. A bearing platform 3 is provided at the lower end of the vehicle model 1. The size of the bearing platform 3 is consistent with the lane size in the mechanical servo system. Four through holes are opened on the bearing platform 3. The size of the through holes is larger than the size of the force measuring rod 4. A force measuring rod 4 is placed in each through hole. The force measuring rod 4 is made of metal with a certain hardness and toughness. The four wheels of the vehicle model 1 are respectively arranged at the upper ends of the four force measuring rods 4. The lower ends of the force measuring rods 4 are connected to the force measuring balance 2. The vehicle model 1 is subjected to force, and the torque is transmitted to the force measuring balance 2 under the bearing platform 3 through the force measuring rod 4. The bearing platform 3 is slidably connected to the mechanical servo system. Specifically, two support plates are provided at the lower end of the bearing platform 3, and a fixed force measuring rod 4 is provided at the lower end of one support plate. The positioning groove 47 is a V-shaped groove, and the positioning groove 47 matches the shape of the guide plate 26 of the mechanical servo system. A half thread 48 is provided at the lower end of the other support plate, and the support plate is threadedly connected with the first threaded screw 27 of the mechanical servo system through the half thread 48. The first threaded screw 27 rotates to drive the support platform 3 to move, thereby changing the measurement position of the vehicle model 1. During the movement of the vehicle model 1, the force measuring rod 4 contacts the through hole, so that the force measuring rod 4 and the force measuring balance 2 move together with the vehicle model 1. When the required measurement position is reached, the first threaded screw 27 reverses a small angle so that the force measuring rod 4 does not contact the through hole to avoid affecting the accuracy of the data.

[0070] In this embodiment, the force measuring balance 2 includes a shell 5, a top plate 6 is arranged on the top of the shell 5, a positioning hole for the force measuring rod 4 to pass through is opened on the top plate 6, a clamping device is arranged inside the shell 5, a force measuring inner ring 7 is arranged between the clamping device and the shell 5, the clamping device is used to clamp the force measuring rod 4 and make the force measuring rod 4 contact with the groove of the force measuring inner ring 7, a locking groove 8 is opened at the center of the clamping device, and the locking groove 8 matches the lifting rod key plate 9 of the mechanical servo system, and a bottom plate 10 is arranged at the bottom of the shell 5. 10 is made of magnetic conductive material, specifically high magnetic conductive stainless steel material. A through hole penetrating the bottom plate 10 is arranged at the center of the bottom plate 10, and the through hole corresponds to the locking groove 8, so that the lifting rod key plate 9 can pass through and cooperate with the locking groove 8 to realize the locking and release of the vehicle model 1 and the force measuring balance 2. A guide groove 11 is arranged at the bottom of the bottom plate 10, and a non-slip surface is formed by frosting. Under the action of the strong magnetic field of the electromagnet 25 under the bottom plate 23 of the test bench, it can be tightly pressed on the bottom plate 23 of the test bench to play a fixing role. The bottom plate 10 is provided with a battery 12, a wireless charging module 13 and a Bluetooth transmitter module 14. The housing 5 is provided with a signal output window corresponding to the position of the Bluetooth transmitter module 14 and is sealed with tempered glass to ensure the stability of the signal of the force measuring balance 2. The Bluetooth transmitter module 14 adopts Bluetooth 5.1, which can provide auxiliary spatial positioning and multi-to-multi signal transmission, and effectively reduce power consumption, improve the response speed and data stability of the force measuring balance 2. The battery 12 and the wireless charging module 13 can ensure the power endurance of the force measuring balance 2, can be automatically charged when the force measuring balance 2 is on standby, and can be dormant and awakened via Bluetooth. The force measuring inner ring 7 is electrically connected to the Bluetooth transceiver module through the piezoelectric module, the force measuring rod 4 transmits the torque to the force measuring inner ring 7, the force measuring inner ring 7 transmits the torque to the high-precision piezoelectric module, the piezoelectric module converts the six-component force of the vehicle model 1 into various voltage digital signals, and outputs them to the control system through the Bluetooth transmitter module 14.

[0071] In this embodiment, the clamping device further includes a locking pressure plate 15, four spring latches 16 and four pressure rods 17. The locking pressure plate 15 is arranged on the outside of the locking groove 8, and the spring latches 16 are arranged on the outside of the locking pressure plate 15. A rotating shaft is arranged at the center of each pressure rod 17. One end of the pressure rod 17 contacts a force measuring rod 4, and the other end of the pressure rod 17 contacts a spring latch 16. By inserting the lifting rod key plate 9 into the locking groove 8, the locking pressure plate 15 is driven to rotate a certain angle, and the force measuring rod 4 is pressed tightly in the slot of the force measuring inner ring 7. In order to ensure that the test accuracy is not affected, the connection between the clamping device and the force measuring rod 4 is a rigid physical connection. The material of the locking pressure plate 15 uses high-hardness manganese steel to reduce wear and deformation.

[0072] In this embodiment, the mechanical servo system includes a balance warehouse, two rotating lifting devices 18, a moving track 49 and a warehouse entry track 19. The balance warehouse includes a circular carrying plate and a driving mechanism 22. A Bluetooth transceiver module is arranged at the center of the carrying plate to complete the functions of waking up, self-checking, marking and sleeping of the force measuring balance 2, and transmit the status of each force measuring balance 2 to the control system in real time to ensure that the operator can monitor the working condition of each force measuring balance 2 in real time. A number of convex grooves are evenly arranged on the upper circumference of the carrying plate, and a through hole 21 is provided in each convex groove. A wireless charging coil 20 is arranged on the outside of each through hole 21 to continuously replenish the power of the dormant force measuring balance 2. A force measuring balance 2 is arranged in each convex groove. The convex groove is a semi-circumferential convex groove, which is used to constrain the position of the force measuring balance 2. An inner gear ring is arranged at the lower end of the carrying plate, and a gear is arranged at the power output end of the driving mechanism 22, and the gear is meshed with the inner gear ring; the warehouse entry track 19 is arranged at an angle, and the higher end of the warehouse entry track 19 is connected to one end of the moving track 49, and the lower end of the warehouse entry track 19 is connected to the balance The warehouse is connected, a rotating lifting device 18 is located below the higher end of the warehouse entry track 19, and the other rotating lifting device 18 is located below the balance warehouse. The rotating lifting device 18 can pass through the through hole 21 and lift a force measuring balance 2 to the other end of the moving track 49; the rotating lifting device 18 includes a lifting rod, which is retractable. A rotating mechanism that drives the lifting rod to rotate is arranged at the bottom of the lifting rod, and a locking structure that matches the force measuring balance 2 is arranged at the top of the lifting rod. The locking structure realizes the locking and release of the force measuring balance 2 and the vehicle model 1, and the locking structure is the lifting rod key plate 9.

[0073] In this embodiment, the movable track 49 includes a test bench bottom plate 23, and a positioning groove 24 is arranged on the upper surface of the test bench bottom plate 23. The guide groove 11 at the bottom of the force measuring balance 2 matches the positioning groove 24. The force measuring balance 2 slides along the positioning groove 24. The test bench bottom plate 23 is made of non-metal. A plurality of electromagnets 25 are arranged on the lower surface of the test bench bottom plate 23. The electromagnets 25 are fixed at the center position of the simulated lane under the test bench bottom plate 23. Each electromagnet 25 corresponds to a test position. In this embodiment, there are 6 electromagnets 25, which can realize the six-component force and wind speed measurement of the vehicle model 1 above the bridge with 6 lanes in both directions and at different positions. Test bench side plates are provided on both sides of the test bench bottom plate 23, a guide plate 26 is provided on the outer side of one test bench side plate, an inverted V-shaped groove is provided on the top of the guide plate 26, and the positioning groove 47 of the support plate is matched. In order to ensure the smooth movement of the force measuring balance 2 and the measurement accuracy, the guide plate 26 and the positioning convex groove 24 need to be processed with high precision with the corresponding plane, and a first threaded screw 27 is provided on the outer side of the other test bench side plate, bearing seats are provided at both ends of the first threaded screw 27, and a stepping motor for driving the first threaded screw 27 to rotate is provided at one end of the first threaded screw 27, and a driving gear is provided at the power output end of the stepping motor, and a driven gear is provided on the first threaded screw 27. Transmission is achieved through the meshing of the driving gear and the driven gear. The vehicle model 1 slides along the inverted V-shaped groove of the first threaded screw 27 and the guide plate 26. An exit 28 is provided at one end of the test bench bottom plate 23, and an entrance 29 is provided at the other end of the test bench bottom plate 23. The exit 28 corresponds to a force measuring balance 2 on the balance bin. The rotating lifting device 18 lifts the force measuring balance 2 to the exit 28 and locks the force measuring balance 2 with the vehicle model 1. The entrance 29 corresponds to the higher end of the entry track 19. The rotating lifting device 18 releases the force measuring balance 2 and the vehicle model 1 located at the entrance 29 and lowers the force measuring balance 2 to the entry track 19. The force measuring balance 2 slides back to the balance bin by itself under the action of gravity.

[0074] When the mechanical servo system of this embodiment is working, the driving mechanism 22 (stepping motor) drives the carrier plate to rotate, and the force measuring balance 2 that needs to be taken out of the warehouse is rotated to the warehouse out position. The warehouse out opening 28 of the force measuring balance 2 corresponds to the warehouse out position. The rotating lifting device 18 extends the lifting rod, passes through the through hole 21 on the carrier plate, and is inserted into the bottom through hole of the force measuring balance 2. The lifting rod key plate 9 on the top of the lifting rod is inserted into the locking groove 8 of the force measuring balance 2, and the force measuring balance 2 is pushed to the warehouse out opening 28. In this process, the force measuring rod 4 under the vehicle model 1 that has been pre-stayed at the warehouse out opening 28 will gradually be inserted into the fixed position of the top plate 6 of the force measuring balance 2. In the positioning hole, after the force measuring balance 2 reaches the specified position, the rotary lifting device 18 will make a 60-degree rotation, and the lifting rod key plate 9 will twist the locking groove 8 of the force measuring balance 2 to lock the force measuring inner ring 7 of the force measuring balance 2 and the force measuring rod 4, completing the locking of the force measuring balance 2 and the vehicle model 1. The rotary lifting device 18 will descend and exit, and the measuring process will begin. If bidirectional measurement is required, the vehicle model 1 and the force measuring balance 2 can be continuously lifted by the rotary lifting device 18 until they are disengaged from the first threaded screw 27 and the positioning groove 47. The force measuring balance 2 and the vehicle model 1 will rotate 180 degrees as a whole to achieve the direction change of the vehicle model 1. When the vehicle model 1 and the force measuring balance 2 are locked, the measurement can begin. The control system sends a command to the stepper motor to drive the high-precision first screw 27 to rotate, and move the vehicle model 1 and the force measuring balance 2 to the required measurement position. The electromagnet 25 is energized to tightly adsorb the force measuring balance 2 on the bottom plate 23 of the test bench and clamp it on the positioning convex groove 24 to ensure that the force measuring balance 2 will not be displaced during measurement, ensuring data accuracy. When the measurement is completed, the electromagnet 25 is powered off, and the first screw 27 moves the vehicle model 1 and the force measuring balance 2 to the next position or directly to the warehouse entrance 29. At the same time, the driving mechanism 22 drives the balance warehouse to align the corresponding force measuring balance 2 storage position with the warehouse entrance track 19. The force measuring balance 2 to be released is unlocked and disengaged with the assistance of the rotating lifting device 18, and is taken down to the warehouse entrance track 19 by the rotating lifting device 18, and returns to the balance warehouse along the warehouse entrance track 19.

[0075] In order to maintain the continuity of the measuring bridge during the measurement process, the moving track 49 needs to be shielded and can be automatically opened when the force measuring balance 2 moves, providing a channel for the movement of the force measuring balance 2 and the vehicle model 1. Therefore, a sliding table is provided on the force measuring platform of this embodiment, and the sliding table includes fixed cover plates 30 located on both sides of the force measuring platform and a plurality of sliding cover plates 31 located on the force measuring platform. The plurality of sliding cover plates 31 are arranged above the entry port 29, the exit port 28 and a plurality of test positions. Each sliding cover plate 31 is driven by a sliding mechanism 50. Each sliding mechanism 50 includes a first cover plate motor 51 and a reducer, two oppositely arranged limit plates 33 and two oppositely arranged cover plate cantilevers 34. The sliding cover plate 31 is arranged on the cover plate cantilever 34. Each limit plate 33 is provided with a limit groove 35 and a slide groove 36. The power output end of the first cover motor 21 is connected to a support rod in transmission, and the two ends of the support rod respectively pass through the middle of a cover cantilever 34 and a second gear 32 is set at both ends of the support rod. The second gear 32 is meshed with the tooth shape of the slide groove 36. It also includes a sliding rod. The two ends of the sliding rod respectively pass through the end of the cover cantilever 34 and are slidably set in the limit groove 35. A limit switch is set at both ends of the limit groove 35. When the sliding rod touches the limit switch, the first cover motor 21 stops working. The limit groove 35 and the slide groove 36 are both bent, and the length and bending angle of the limit groove 35 and the slide groove 36 are the same.

[0076] Before the force measuring balance 2 moves, the control system sends a command to the first cover motor 21, and the first cover motor 21 reverses, pushing the sliding cover 31 downward to under the fixed cover 30, and automatically stops when it hits the limit switch. A series of sliding covers 31 open to provide a channel for the movement of the force measuring balance 2. When the force measuring balance 2 moves to the measuring position and is fixed under the adsorption of the electromagnet 25, the first cover motor 21 of the vacant measuring position and the access port 29 rotates forward, pushing the sliding cover 31 upward, and stops when it hits the limit switch. The sliding cover 31 closes the measuring surface to reduce the interference of the wind tunnel flow.

[0077] In this embodiment, the wind measuring overhead travelling vehicle includes an X-direction moving mechanism, a Y-direction moving mechanism and a Z-direction moving mechanism. The X-direction moving mechanism is slidably connected to a track 41 via a walking wheel 40. The walking wheel 40 is provided with a walking groove. The track 41 is provided with a walking convex groove matching the walking groove. The X-direction moving mechanism is slidably connected to the Y-direction moving mechanism, and the Z-direction moving mechanism is slidably connected to the X-direction moving mechanism.

[0078] The X-direction moving mechanism includes an X-direction driving structure 37, an X-direction threaded screw 38 and an X-direction smooth guide rod 39, the X-direction threaded screw 38 and the X-direction smooth guide rod 39 are arranged in parallel, the power output end of the X-direction driving structure 37 is transmission-connected with the X-direction threaded screw 38, the X-direction smooth guide rod 39 is fixedly connected with the X-direction driving structure 37, and both ends of the X-direction threaded screw 38 and the X-direction smooth guide rod 39 are provided with a walking wheel 40;

[0079] The Y-direction moving mechanism includes a Y-direction driving structure 42 and a Y-direction threaded screw 43. The power output end of the Y-direction driving structure 42 is transmission-connected to the Y-direction threaded screw 43. The Y-direction threaded screw 43 is threadedly connected to the X-direction driving structure 37.

[0080] The Z-direction moving mechanism includes a Z-direction driving structure 44 and a wind measuring rod. The Z-direction driving structure 44 is threadedly connected to the X-direction threaded screw 38. The Z-direction driving structure 44 is slidably connected to the X-direction smooth guide rod 39. The power output end of the Z-direction driving structure 44 is transmission-connected to the wind measuring rod. The wind measuring rod includes a Z-direction measuring arm 45 and a measuring cantilever arranged at one end of the Z-direction measuring arm 45. The Z-direction measuring arm 45 is a rack. The power output end of the Z-direction driving structure 44 is meshed with the Z-direction measuring arm 45 through a first driving gear. The measuring cantilever is provided with a wind meter 46. The wind meter 46 is used to measure wind speed and wind direction. The data transmission of the wind meter 46 adopts a wired mode. The X-direction moving mechanism, the Y-direction moving mechanism and the Z-direction driving structure 44 are a walking system, and the wind measuring rod is a measuring system.

[0081] Under the instruction of the control system, the Y-axis driving structure 42 drives the Y-axis threaded screw 43, the X-axis driving structure 37 drives the X-axis threaded screw 38, and the Z-axis driving structure 44 drives the wind measuring rod, so as to move the Z-axis measuring arm 45 and the anemometer 46 to the specified position and measure the wind volume. After the measurement is completed, the control system controls the wind measuring overhead travelling crane to move back to the initial position.

[0082] The wind measuring overhead crane of this embodiment is installed on the top of the wind tunnel. It can measure the wind direction and wind speed at any point within the X, Y, and Z axial ranges, and can also measure the wind force inside a semi-enclosed area. If necessary, it can also be installed on the inner wall of the wind tunnel top and shielded by movable wind tunnel wall panels. It can be opened when needed to reduce wind field disturbances.

[0083] In this embodiment, in order to ensure safety, limit switches are set at both ends of the X-axis threaded screw 38, the Y-axis threaded screw 43, the Z-axis measuring arm 45 and the first threaded screw 27. The limit switch is composed of a pair of laser tubes and photoelectric tubes. When the measuring crane runs to the limit switch, the photoelectric tube is blocked and sends a signal to the control system, prompting that the measuring crane has moved to the limit position. At the same time, as needed, the control system can initialize the counter to avoid the accumulation of position errors due to multiple round trips during long-term measurement of the control system, thereby further amplifying the measurement data error. In order to ensure that when the limit switch fails, the control system will not cause the measuring crane or the force measuring balance 2 to move beyond the limit due to the failure to receive the signal, causing damage to the precision components, an emergency stop switch is added after the limit switch. When the component moves to the emergency stop position, the emergency stop switch will send a signal to urgently stop the system, display a system error, and prompt the maintenance personnel to immediately repair and replace the error position to ensure the overall safety of the device.

[0084] In this embodiment, cameras are installed at the wind measuring platform, force measuring platform, balance bin and other locations to realize video acquisition and transmission, monitor the entire measurement process, and transmit the image to the control system console in real time, so that the operator can check the position of the force measuring balance 2, wind measuring overhead crane and balance bin at any time to ensure the accuracy and safety of the test process data.

[0085] This embodiment aims at improving the structure, and the control system is the existing technology.

[0086] The force measuring balance 2 of the present embodiment can realize wireless data exchange, the force measuring platform can adjust the measuring position, adjust the position of the force measuring balance 2, and automatically assemble and replace the force measuring balance 2, so as to realize the assembly and replacement of the force measuring balance 2 without human interference, and charge the internal battery 12 of the force measuring balance 2 wirelessly, and the wind measuring platform can realize automatic wind speed and direction measurement in the whole area without further human intervention, and realize automatic, real-time and continuous measurement remotely through the operating system outside the wind tunnel, so as to reduce human interference and improve the efficiency and accuracy of wind tunnel testing.

[0087] Embodiment 2

[0088] like Figure 5b As shown, the difference between this embodiment and the first embodiment is that the clamping device further includes a locking pressure plate 15 and a pressure plate 52, the locking pressure plate 15 is arranged outside the locking groove 8, the pressure plate 52 is arranged outside the locking pressure plate 15 and is fixedly connected to the locking pressure plate 15, and the edge of the pressure plate 52 is provided with four protrusions, each of which contacts a force measuring rod 4. By inserting the lifting rod key plate 9 into the locking groove 8, the locking pressure plate 15 and the pressure plate 52 are driven to rotate a certain angle, and each protrusion presses the force measuring rod 4 into the clamping groove of the force measuring inner ring 7.

[0089] Embodiment 3

[0090] like Fig.11b As shown, the difference between this embodiment and the first or second embodiment is that: a sliding table is provided on the force measuring platform, and the sliding table includes fixed cover plates 30 located on both sides of the force measuring platform and a plurality of sliding cover plates 31 located on the force measuring platform, and each sliding cover plate 31 is driven by a sliding mechanism 50; each sliding mechanism 50 includes a second cover plate motor 53, a lifting structure, a push rod 54 and a base 55, and the slide rail seat of the lifting structure is slidably connected to the base 55; the lifting structure includes two groups of symmetrically arranged connecting rod groups, each connecting rod group includes a first connecting rod 56, a second connecting rod 57, a third connecting rod 58 and a fourth connecting rod 59, the first connecting rod 56 is parallel to the third connecting rod 58, the second connecting rod 57 is parallel to the fourth connecting rod 59, and the sliding cover plate 31 is located on the first connecting rod 56 and the third connecting rod 58. The upper end of the first connecting rod 56 is slidably connected to the Y-axis slide groove 60, the lower end of the first connecting rod 56 is hinged to the upper end of the second connecting rod 57, the lower end of the second connecting rod 57 is hinged to the slide rail seat, the lower end of the third connecting rod 58 is hinged to the upper end of the fourth connecting rod 59, and a torsion spring 63 is provided at the hinge between the third connecting rod 58 and the fourth connecting rod 59, a first connecting rod 61 is provided at the hinge between the first connecting rod 56 and the second connecting rod 57 of the two groups of connecting rod groups, a second connecting rod 62 is provided at the hinge between the third connecting rod 58 and the fourth connecting rod 59 of the two groups of connecting rod groups, the power output end of the second cover motor 53 is transmission connected to the first rack, the other end of the first rack is hinged to one end of the push rod 54, the other end of the push rod 54 is provided with a through hole, the second connecting rod 62 is penetrated in the through hole and can rotate in the through hole. The power output end of the second cover motor 53 is meshed with the first rack through the second driving gear. The first rack drives the push rod 54 to move, and the push rod 54 drives the lifting structure to move. The first connecting rod 56 slides in the Y-direction slide groove 60 to realize the lifting and lowering of the sliding cover 31. The slide rail seat of the lifting structure slides in the base 55 to realize the extension and retraction of the sliding cover 31.

[0091] Embodiment 4

[0092] like Fig.15 As shown, this embodiment provides a test method using the bridge wind tunnel wind speed and vehicle force measurement test system of embodiment 1, including the following steps:

[0093] Step 1: Wind test;

[0094] Specifically include:

[0095] a1. Turn on the computer;

[0096] b1. Reset the wind measurement platform;

[0097] c1. Start wind test;

[0098] d1. Move the wind measuring overhead crane to a suitable location;

[0099] e1. Move the wind measuring rod to a suitable position;

[0100] f1. Transmission data of anemometer 46;

[0101] g1. Determine whether to continue measuring. If not, the wind measuring overhead crane returns to its position and is stored on one side of the wind tunnel, and the test ends. If it is necessary to continue measuring the wind force at other locations, repeat steps d1-f1 until all locations are measured, the wind measuring overhead crane returns to its position, and the test ends.

[0102] Step 2: Six-component force test;

[0103] Specifically include:

[0104] a2. Turn on the machine, reset the force measuring platform, place the vehicle model 1 and move it to the initial position, and connect the wireless transmission system to the network;

[0105] b2. The force measuring balance 2 performs self-test. If the self-test is normal, the system marks the number as available. If one of the force measuring balances 2 performs self-test error, the system marks the error and does not enable the force measuring balance 2 in subsequent measurements.

[0106] c2. The test begins, the wind tunnel is started, and the system selects a suitable force measuring balance 2 according to the experimenter's requirements, and the force measuring balance 2 is rotated into place by the balance warehouse;

[0107] d2. Rotate the lifting device 18 to lift the force measuring balance 2 to the moving track 49 and lock the force measuring rod 4;

[0108] e2. Rotate the lifting device 18 and withdraw, open the sliding cover 31, drive the first threaded screw 27 to move the vehicle model 1 to the measuring position, energize the electromagnet 25, and adsorb and fix the force balance 2;

[0109] f2. Close the sliding cover 31 of the non-measuring position;

[0110] g2. Measurement starts and data is transmitted back;

[0111] h2. If you need to change the measurement position, repeat steps e2-g2; if you do not need to change the measurement position, the measurement is completed, open the sliding cover 31, and move the force balance 2 to the warehouse entrance 29;

[0112] i2. Rotate the balance bin so that the corresponding bin is aligned with the entry track 19;

[0113] j2. Rotate the lifting device 18 to rise, release the force measuring rod 4, and take over the force measuring balance 2 to drop into the warehouse track 19, and slide back to the balance warehouse;

[0114] k2 If you need to replace the force measuring balance 2, drive the first threaded screw 27 to move the vehicle model 1 to the exit 28, repeat steps c2-j2;

[0115] l2. If you need to measure the six-component force of other vehicle models, replace the vehicle model and force measuring balance 2, and repeat steps c2-j2. If not required, reset the system and the measurement ends.

[0116] It should be noted that step one and step two do not represent the order of implementation. During the entire measurement process, the wireless charging coil 20 continuously replenishes power to the battery of the force measuring balance 2 on standby in the balance compartment, and the system will provide real-time monitoring videos of key parts inside the test platform.

[0117] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A bridge wind tunnel wind speed and vehicle force test system, characterized by: It comprises a vehicle model, a force measuring balance, a wind measuring platform and a force measuring platform, wherein the wind measuring platform comprises a wind measuring overhead crane, the wind measuring platform is arranged inside a wind tunnel and is used to measure wind speeds and wind directions at different positions, the force measuring platform is arranged inside a bridge model, the force measuring platform comprises a mechanical servo system, the vehicle model is locked on the force measuring balance, the force measuring balance is used to measure the six-component force of the vehicle model, and the mechanical servo system is used to transport and move the force measuring balance; A bearing platform is provided at the lower end of the vehicle model, and four through holes are opened on the bearing platform, and a force measuring rod is placed in each of the through holes. The four wheels of the vehicle model are respectively arranged at the upper ends of the four force measuring rods, and the lower ends of the force measuring rods are connected to the force measuring balance. The bearing platform is slidably connected to the mechanical servo system; The force measuring balance comprises a shell, a top plate is arranged on the top of the shell, a positioning hole for the force measuring rod to pass through is provided on the top plate, a clamping device is arranged inside the shell, a force measuring inner ring is arranged between the clamping device and the shell, the clamping device is used to clamp the force measuring rod and make the force measuring rod contact with the clamping groove of the force measuring inner ring, a locking groove is arranged at the center of the clamping device, and the locking groove matches the lifting rod key plate of the mechanical servo system, a bottom plate is arranged at the bottom of the shell, the bottom plate is made of magnetic conductive material, a through hole penetrating the bottom plate is arranged at the center of the bottom plate, the through hole corresponds to the locking groove, a guide groove is arranged at the bottom of the bottom plate, a battery, a wireless charging module and a Bluetooth transmitting module are arranged on the bottom plate, a signal output window corresponding to the position of the Bluetooth transmitting module is arranged on the shell, and the force measuring inner ring is electrically connected to the Bluetooth transmitting module through a piezoelectric module; The clamping device further comprises a locking pressure plate, four spring bayonet pins and four pressure rods, wherein the locking pressure plate is arranged on the outside of the locking groove, the spring bayonet pins are arranged on the outside of the locking pressure plate, a rotating shaft is arranged at the center of each of the pressure rods, one end of the pressure rods contacts with one of the force measuring rods, and the other end of the pressure rods contacts with one of the spring bayonet pins; The mechanical servo system includes a balance warehouse, two rotating lifting devices, a moving track and a warehouse entry track. The balance warehouse includes a circular carrying plate and a driving mechanism. A Bluetooth transceiver module is arranged at the center of the carrying plate. A plurality of convex grooves are evenly arranged on the upper circumference of the carrying plate. A through hole is provided in each of the convex grooves. A wireless charging coil is arranged outside each of the through holes. A force measuring balance is arranged in each of the convex grooves. An inner gear ring is arranged at the lower end of the carrying plate. A first gear is arranged at the power output end of the driving mechanism. The first gear is meshed with the inner gear ring. The warehouse entry track is tilted, the higher end of the warehouse entry track is connected to one end of the mobile track, the lower end of the warehouse entry track is connected to the balance bin, one of the rotary lifting devices is located below the higher end of the warehouse entry track, and the other rotary lifting device is located below the balance bin, and the rotary lifting device can pass through the through hole and lift a force measuring balance to the other end of the mobile track; The rotary lifting device comprises a lifting rod, the top of which is provided with a locking structure matching the force measuring balance, and the locking structure realizes locking and releasing of the force measuring balance and the vehicle model; The movable track includes a test bench bottom plate, a positioning convex groove is arranged on the upper surface of the test bench bottom plate, the force measuring balance slides along the positioning convex groove, a plurality of electromagnets are arranged on the lower surface of the test bench bottom plate, each of the electromagnets corresponds to a test position, test bench side plates are arranged on both sides of the test bench bottom plate, a guide plate is arranged on the outer side of one of the test bench side plates, an inverted V-shaped slide groove is arranged on the top of the guide plate, a first threaded screw is arranged on the outer side of the other test bench side plate, a stepping motor for driving the first threaded screw to rotate is arranged at one end of the first threaded screw, and the vehicle model moves along the first The threaded screw and the inverted V-shaped slide groove slide, one end of the test bench bottom plate is provided with an exit, the other end of the test bench bottom plate is provided with an entrance, the exit corresponds to a force measuring balance on the balance bin, the rotary lifting device lifts the force measuring balance to the exit and locks the force measuring balance with the vehicle model, the entrance corresponds to the higher end of the entry track, the rotary lifting device releases the force measuring balance and the vehicle model located at the entrance and lowers the force measuring balance to the entry track, and the force measuring balance slides back to the balance bin by itself under the action of gravity.

2. The bridge wind tunnel wind speed and vehicle force measurement test system according to claim 1 is characterized by: The force measuring platform is provided with a sliding table, and the sliding table includes a fixed cover plate located on both sides of the force measuring platform and a plurality of sliding cover plates located on the force measuring platform, each of the sliding cover plates is driven by a sliding mechanism, and each of the sliding mechanisms includes a first cover plate motor, two relatively arranged limit plates and two relatively arranged cover plate cantilevers, and the sliding cover plate is arranged on the cover plate cantilever, and each of the limit plates is provided with a limit groove and a slide groove, the power output end of the first cover plate motor is transmission connected with a support rod, the two ends of the support rod respectively pass through the middle part of the cover plate cantilever and the two ends of the support rod are provided with a second gear, the second gear is meshed with the tooth shape of the slide groove, and also includes a sliding rod, the two ends of the sliding rod respectively pass through the end of the cover plate cantilever and are slidably arranged in the limit groove, and the limit groove and the slide groove are both bent.

3. The bridge wind tunnel wind speed and vehicle force measurement test system according to claim 1 is characterized by: The wind measuring overhead travelling vehicle comprises an X-direction moving mechanism, a Y-direction moving mechanism and a Z-direction moving mechanism, wherein the X-direction moving mechanism is slidably connected to a track via a running wheel, the X-direction moving mechanism is slidably connected to the Y-direction moving mechanism, and the Z-direction moving mechanism is slidably connected to the X-direction moving mechanism.

4. The bridge wind tunnel wind speed and vehicle force test system according to claim 3 is characterized by: The X-direction moving mechanism comprises an X-direction driving structure, an X-direction threaded screw and an X-direction smooth guide rod, wherein the X-direction threaded screw and the X-direction smooth guide rod are arranged in parallel, the power output end of the X-direction driving structure is transmission-connected with the X-direction threaded screw, the X-direction smooth guide rod is fixedly connected with the X-direction driving structure, and both ends of the X-direction threaded screw and the X-direction smooth guide rod are provided with a walking wheel; The Y-direction moving mechanism comprises a Y-direction driving structure and a Y-direction threaded screw, the power output end of the Y-direction driving structure is transmission-connected to the Y-direction threaded screw, and the Y-direction threaded screw is threadedly connected to the X-direction driving structure; The Z-direction moving mechanism includes a Z-direction driving structure and a wind measuring rod. The Z-direction driving structure is threadedly connected to the X-direction threaded screw, and the Z-direction driving structure is slidingly connected to the X-direction smooth guide rod. The power output end of the Z-direction driving structure is transmission-connected to the wind measuring rod. The wind measuring rod includes a Z-direction measuring arm and a measuring cantilever arranged at one end of the Z-direction measuring arm. A wind meter is arranged on the measuring cantilever, and the wind meter is used to measure wind speed and wind direction.

5. A test method using the bridge wind tunnel wind speed and vehicle force test system according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: Wind test; Specifically include: a1. Turn on the computer; b1. Reset the wind measurement platform; c1. Start wind test; d1. Move the wind measuring overhead crane to a suitable location; e1. Move the wind measuring rod to a suitable position; f1. Transmit anemometer data; g1. Determine whether it is necessary to continue measuring the wind force at other locations. If not, the wind measuring overhead crane returns to its position and is stored on one side of the wind tunnel, and the test is over. If it is necessary to continue measuring, repeat steps d1-f1 until all positions are measured, the wind measuring overhead crane returns to its position, and the test is over. Step 2: Six-component force test; Specifically include: a2. Turn on the machine, reset the force measuring platform, place the vehicle model and move it to the initial position, and connect the wireless transmission system to the network; b2. The force measuring balance self-checks. If the self-check is normal, the system marks the number as available. If one of the force measuring balances fails in self-check, the system marks the error and does not enable the force measuring balance in subsequent measurements. c2. The test begins, the wind tunnel is started, and the system selects a suitable force measuring balance according to the experimenter's requirements, and the force measuring balance is rotated into place by the balance warehouse; d2. Rotate the lifting device to lift the force measuring balance onto the moving track and lock the force measuring rod; e2. The rotating lifting device is withdrawn, the sliding cover is opened, and the first threaded screw is driven to move the vehicle model to the measuring position. The electromagnet is energized to adsorb and fix the force balance; f2. Close the sliding cover of the non-measuring position; g2. Measurement starts and data is transmitted back; h2. If the measuring position needs to be changed, repeat steps e2-g2; if the measuring position does not need to be changed, the measurement is completed, the sliding cover is opened, and the force balance is moved to the entrance; i2. Rotate the balance bin to align the corresponding bin with the entry track; j2. Rotate the lifting device upward, release the force measuring rod, and lower the force measuring balance to the warehouse track and slide it back to the balance warehouse; k2. If you need to replace the force measuring balance, drive the first threaded screw to move the vehicle model to the exit, and repeat steps c2-j2; l2. If it is necessary to further measure the six-component force of other vehicle models, change the vehicle model and repeat steps c2-j2; if not necessary, reset the system and the measurement ends.

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