A walking structure of a full-model test section of a wind tunnel

Abstract

The application discloses a wind tunnel full model test section walking structure, which comprises a main body frame and a wheel frame, horizontal sliding mechanisms are arranged at four corners between the main body frame and the wheel frame, a sliding driving mechanism is arranged at one side between the main body frame and the wheel frame, and self-walking wheels are arranged at four corners of the wheel frame. The application has the beneficial effects that: through the wheel frame with self-walking wheels at four corners, the flexible movement and steering of the whole frame of the wind tunnel in the site are realized, and the site adaptability and layout adjustment efficiency are significantly improved; after the rough positioning of the wheel frame, the horizontal sliding mechanisms and the sliding driving mechanism between the main body frame and the wheel frame can realize the accurate translation fine adjustment of the main body frame in the horizontal plane, the accumulated error of walking and the unevenness of the ground are effectively compensated, the positioning accuracy of the main body of the wind tunnel reaches the millimeter level, the attitude correction is supported, and the fixed connection between the final main body frame and the wind tunnel is ensured.

Description

Technical Field

[0001] This application belongs to the field of wind tunnel technology, specifically relating to a walking structure for a full-scale wind tunnel test section. Background Technology

[0002] During the construction planning or subsequent renovation of large wind tunnels, their physical location often needs to be adjusted according to different testing requirements (such as matching specific-sized models, optimizing site layout, connecting new testing equipment, or adapting to site limitations). Fixed foundation construction greatly limits the flexibility and adaptability of wind tunnels. Therefore, ensuring that the main structure of the wind tunnel, especially the overall frame containing the core testing section, can move safely, smoothly, and accurately within the site is crucial for improving the versatility, utilization efficiency, and ability to cope with future changes in demand.

[0003] Existing mobility solutions for heavy equipment (such as rail-based, wheeled, or hydraulically jacked sliding) face significant drawbacks when relocating the overall frame of a wind tunnel: rigid rails involve a large amount of construction work, damage the site, and have poor flexibility; wheeled mechanisms struggle to balance load-bearing capacity and positioning accuracy, easily causing frame deformation or uneven settlement, severely affecting the aerodynamic performance and measurement benchmarks of the wind tunnel; vibration control during the sliding process is difficult, threatening the safety of precision instruments. Existing technologies generally suffer from low mobility, insufficient positioning accuracy, significant potential harm to the structural integrity and measurement accuracy of the wind tunnel, and poor adaptability, making it difficult to meet the requirements for efficient, precise, and safe relocation of large wind tunnels. Summary of the Invention

[0004] The purpose of this application is to provide a walking structure for a full-scale wind tunnel test section, which solves the problem that existing walking schemes with wheeled mechanisms cannot simultaneously achieve both load-bearing capacity and positioning accuracy.

[0005] The objective of this application is achieved through the following technical solution: A walking structure for a wind tunnel full-scale test section includes a main frame and a wheel frame. A horizontal sliding mechanism is provided between the main frame and the wheel frame at the four corners. A sliding drive mechanism is provided between the main frame and the wheel frame on one side. Self-propelled wheels are provided on the wheel frame at the four corners.

[0006] Furthermore, the wheel frame is a rectangular frame, with the horizontal sliding mechanism and the self-propelled wheel located at the four corners of the rectangular frame, and the sliding drive mechanism located on one side of the rectangular frame.

[0007] Furthermore, the horizontal sliding mechanism includes a guide rail mounting plate, a guide rail, and a slider. The main frame is connected to the guide rail mounting plate, the guide rail mounting plate is connected to the guide rail, the guide rail and the slider slide in a horizontal direction, and the slider is connected to the wheel frame.

[0008] Furthermore, the horizontal sliding mechanism also includes a slider limiting plate, which is connected to the guide rail mounting plate and located at the slider's sliding limit position.

[0009] Furthermore, the aforementioned skid drive mechanism includes a motor mounting plate, a skid motor, a skid reducer, a skid drive shaft, a lift, a lift mounting plate, an adapter, and an adapter hinge. The main frame is connected to the motor mounting plate and the lift mounting plate. The motor mounting plate is connected to the skid motor. The lift mounting plate is connected to the lift. The skid motor is connected to the skid reducer. The skid reducer is connected to the skid drive shaft. The skid drive shaft is connected to the lift. The telescopic rod of the lift is connected to the adapter. The adapter is hinged to the wheel frame via the adapter hinge.

[0010] Furthermore, each side of the sliding reducer is connected to an elevator via a sliding drive shaft.

[0011] Furthermore, the self-propelled wheel includes a wheel bracket, a wheel axle, a bearing, a travel reducer, and a travel motor. The wheel frame is connected to the wheel bracket, the wheel axle is rotatably mounted on the wheel bracket via the bearing, the wheel is mounted on the wheel axle, the wheel bracket is connected to the travel reducer that drives the wheel axle, and the travel reducer is connected to the travel motor.

[0012] The self-propelled wheel also includes an outer end cover, a bushing, an oil seal, and an inner end cover. The outer end of the wheel bracket is connected to the outer end cover that closes the bearing groove. The inner end of the wheel bracket is connected to the inner end cover that closes the bearing groove. An oil seal is provided between the portion of the wheel axle that passes through the inner end cover and the inner end cover. The wheel bushing is provided with a bushing located between the bearing and the wheel. An oil seal is provided between the bushing and the wheel bracket.

[0013] Furthermore, a sliding limiting mechanism located on one side is provided between the main frame and the wheel frame.

[0014] Furthermore, the sliding limiting mechanism includes a front limiting block, a rear limiting block, and a limiting seat. The main frame is connected to the limiting seat, the front limiting block is connected to the wheel frame and located in front of the limiting seat, and the rear limiting block is connected to the wheel frame and located behind the limiting seat.

[0015] The beneficial effects of this application are: (1) By using the wheel frame with wheels on the four corners, the wind tunnel frame can move and turn flexibly within the site, significantly improving its site adaptability and layout adjustment efficiency.

[0016] (2) After the wheel frame is roughly positioned, the horizontal sliding mechanism and its sliding drive mechanism between the main frame and the wheel frame can realize the precise translation and fine adjustment of the main frame in the horizontal plane, effectively compensate for the cumulative walking error and ground unevenness, ensure that the wind tunnel main body reaches the millimeter-level positioning accuracy, and support attitude correction to ensure the final fixed connection between the main frame and the wind tunnel.

[0017] (3) The wheel frame that carries the walking load is effectively isolated from the main frame that is precisely positioned, which greatly reduces the transmission of moving vibration to the main body and internal precision instruments (such as balances and sensors). After being in place, the locking sliding mechanism can form a stable overall foundation, ensuring the stability of running rigidity and aerodynamic performance.

[0018] (4) It eliminates the complex civil engineering work of pre-embedding high-precision fixed tracks, reduces construction difficulty and cost, and facilitates modular implementation and subsequent maintenance.

[0019] (5) The step-by-step control strategy (coarse movement + fine adjustment) combined with electronic control synchronization significantly improves the safety and controllability of the movement process.

[0020] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding the solution of this application, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected by this application, and will not be exhaustively listed here. Attached Figure Description

[0021] Figure 1 This is the structural front view of this application.

[0022] Figure 2 This is a structural side view of this application.

[0023] Figure 3 This is a top view of the structure of this application.

[0024] Figure 4 yes Figure 3 A sectional view along the AA direction.

[0025] Figure 5 yes Figure 3 BB-direction sectional view.

[0026] Figure 6 yes Figure 3 CC-direction sectional view.

[0027] Figure 7 This is a top view of the sliding drive mechanism of this application.

[0028] In the diagram: 1-Wheel frame, 2-Horizontal sliding mechanism, 3-Sliding drive mechanism, 4-Self-propelled wheel, 5-Sliding limit mechanism; 101-Reinforcing beam; 201-Guide rail mounting plate, 202-Guide rail, 203-Slider, 205-Slider limit plate; 301-Motor mounting plate, 302-Sliding motor, 303-Sliding reducer, 304-Sliding drive shaft, 305-Lifting platform, 306-Lifting platform mounting plate, 307-Adapter, 308-Adapter hinge; 401-Wheel bracket, 402-Wheel axle, 403-Bearing, 404-Outer end cover, 405-Busset, 406-Oil seal, 407-Inner end cover, 408-Travel reducer, 409-Travel motor, 410-Wheel; 501-Front limit block, 502-Rear limit block, 503-Limit seat. Detailed Implementation

[0029] The following non-limiting embodiments are used to illustrate this application.

[0030] Example 1 refer to Figures 1-7 As shown, a walking structure for a wind tunnel full-scale test section includes a main frame, a wheel frame 1, a horizontal sliding mechanism 2, a sliding drive mechanism 3, self-propelled wheels 4, and a sliding limit mechanism 5.

[0031] The main frame serves as the mounting frame for the wind tunnel walls and for adjusting the model's attitude. The wheel frame 1 has self-propelled wheels 4 located at the four corners; that is, the wheel frame 1 is the frame for mounting the wheels, forming a single integrated structure. A horizontal sliding mechanism 2 located at the four corners separates the main frame from the wheel frame 1, allowing for precise horizontal adjustment between the two.

[0032] A sliding drive mechanism 3 is provided on one side between the main frame and the wheel frame 1. The sliding drive mechanism 3 provides power for the relative sliding between the main frame and the wheel frame 1, and the sliding drive mechanism 3 itself has precise adjustment accuracy. A sliding limit mechanism 5 is provided between the main frame and the wheel frame 1 to limit and control the relative sliding amount between the main frame and the wheel frame 1.

[0033] The wheel frame 1 is a rectangular frame, and a reinforcing beam 101 is connected between adjacent sides of the rectangular frame to strengthen the structure of the wheel frame 1. Preferably, the reinforcing beam 101 is located at the two corners on the side away from the sliding drive mechanism 3 and the sliding limit mechanism 5 (i.e., the two front corners), and is fixed to the wheel frame 1 by screws.

[0034] The horizontal sliding mechanism 2 and the self-propelled wheels 4 are both located at the four corners of the rectangular frame. The horizontal sliding mechanism 2 is located at the four corners to ensure the stability and reliability of the relative sliding, while the self-propelled wheels 4 are located at the four corners to provide stable and reliable support for the wheel frame 1 and the main frame. The sliding drive mechanism 3 and the sliding limit mechanism 5 are located on one side of the rectangular frame, and the horizontal sliding drive and the sliding position limit can be completed by being located on one side.

[0035] The horizontal sliding mechanism 2 includes a guide rail mounting plate 201, a guide rail 202, a slider 203, and a slider limiting plate 205. The main frame is fixedly connected to the guide rail mounting plate 201 by screws, and the guide rail mounting plate 201 is fixedly connected to the guide rail 202 by screws. At least two guide rails 202 are arranged horizontally on the guide rail mounting plate 201. The guide rails 202 and the slider 203 slide in a horizontal engagement. The slider 203 is fixedly connected to the wheel frame 1 by screws. The relative sliding between the main frame and the wheel frame 1 is achieved through the sliding engagement between the guide rails 202 and the slider 203.

[0036] The slider limiting plate 205 is connected to the guide rail mounting plate 201 and is located at the sliding limit position of the slider 203. Specifically, the slider limiting plate 205 is fixed to the front and rear ends of the guide rail mounting plate 201 by screws so that the wall panel slider 203 can disengage from the guide rail 202 when it exceeds the limit position.

[0037] The sliding drive mechanism 3 includes a motor mounting plate 301, a sliding motor 302, a sliding reducer 303, a sliding drive shaft 304, a lifting platform 305, a lifting platform mounting plate 306, an adapter 307, and an adapter hinge 308. The main frame is fixedly connected to the motor mounting plate 301 and the lifting platform mounting plate 306 with screws. The motor mounting plate 301 is fixedly connected to the sliding motor 302 with screws, and the lifting platform mounting plate 306 is fixedly connected to the lifting platform 305 with screws, thus achieving the installation and fixation of the main components.

[0038] The sliding steer motor 302 is connected to the sliding reducer 303, which is connected to the sliding drive shaft 304, which is connected to the lifting platform 305. The sliding steer motor 302 is a three-phase asynchronous motor that provides the power for sliding. The sliding reducer 303 is a right-angle planetary reducer that reduces the driving force and increases the torque. The sliding drive shaft 304 transmits the torque to the lifting platform 305, which is a trapezoidal screw jack that converts the torque into the extension and retraction motion of its own telescopic rod.

[0039] The telescopic rod of the lifting platform 305 is threadedly fixed to the adapter 307. The telescopic rod drives the adapter 307 to extend and retract synchronously. The adapter 307 is hinged to the wheel frame 1 through the adapter hinge shaft 308 (horizontal axis). The hinge compensates for the relative horizontal movement deviation between the telescopic rod and the wheel frame 1. Each side of the sliding reducer 303 is connected to a lifting platform 305 via a sliding drive shaft 304. Thus, one sliding motor 302 can synchronously drive two lifting platforms 305 to operate, ensuring the stability and synchronicity of the sliding drive.

[0040] The self-propelled wheel 4 includes a wheel bracket 401, a wheel axle 402, a bearing 403, an outer end cover 404, a bushing 405, an oil seal 406, an inner end cover 407, a travel reducer 408, a travel motor 409, and a wheel 410. The wheel frame 1 is connected to the wheel bracket 401 by screws. A shear block is fixed between the wheel frame 1 and the wheel bracket 401. The shear block is positioned on both sides of the connecting and mating surface to improve the shear strength between the wheel frame 1 and the wheel bracket 401.

[0041] Both sides of the wheel axle 402 are rotatably mounted on the wheel bracket 401 via bearings 403, preferably self-aligning roller bearings. The wheel 410 is fixedly mounted on the wheel axle 402 via a guide key, so the wheel 410 and the wheel axle 402 can rotate synchronously. The wheel bracket 401 is fixedly connected to the travel reducer 408 by screws, and the travel reducer 408 is fixedly connected to the travel motor 409 by screws. At the same time, the travel reducer 408 is driven by the travel motor 409 and the wheel axle 402.

[0042] The travel reducer 408 is a three-phase asynchronous motor used to provide the power for walking. The travel reducer 408 is a right-angle planetary reducer, which reduces the driving force and increases the torque. The travel reducer 408 directly drives the wheel axle 402, i.e. the wheel 410, to rotate, realizing the independent drive of each wheel 410.

[0043] The outer end of the wheel bracket 401 is fixedly connected to the outer end cover 404 of the closed bearing groove by screws. The outer end cover 404 is a blind cover for complete sealing, and a sealing ring is provided between the outer end cover 404 and the wheel bracket 401. A straight-through oil injection cup is provided on the outer end cover 404. The inner end of the wheel bracket 401 is fixedly connected to the inner end cover 407 of the closed bearing groove by screws. The inner end cover 407 is a hole cover for partial sealing, and a sealing ring is provided between the inner end cover 407 and the wheel bracket 401. An oil seal 406 is provided between the portion of the wheel axle 402 that passes through the opening of the inner end cover 407 and the inner end cover 407.

[0044] The wheel 410 is located at the large-diameter end of the wheel axle 402, and the bearing 403 is located at the small-diameter sections at both ends of the wheel axle 402. A bushing 405 is fitted onto the wheel axle 402 between the bearing 403 and the wheel 410. One end of the bushing 405 contacts the axle shoulder, and the other end contacts the bearing 403, ensuring the axial position of the bearing 403. Simultaneously, the bushing 405 seals the bearing groove. An oil seal is provided between the bushing 405 and the wheel bracket 401 to prevent the lubricating oil inside the bearing groove from leaking out.

[0045] The sliding limit mechanism 5 includes a front limit block 501, a rear limit block 502, and a limit seat 503. The main frame is fixedly connected to the limit seat 503 by screws. The front limit block 501 is fixedly connected to the wheel frame 1 by screws and is located in front of the limit seat 503 (the length direction of the wheel frame is front and back). The rear limit block 502 is fixedly connected to the wheel frame 1 by screws and is located behind the limit seat 503. Preferably, the front limit block 501, the rear limit block 502, and the limit seat 503 are all T-shaped structures. Through mutual limiting, the front and rear sliding amount is controlled.

[0046] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A walking structure for a wind tunnel full-scale test section, comprising a main frame and a wheel frame (1), characterized in that: The main frame and the wheel frame (1) are provided with horizontal sliding mechanisms (2) located at the four corners, and a sliding drive mechanism (3) located on one side is provided between the main frame and the wheel frame (1). The wheel frame (1) is provided with self-propelled wheels (4) located at the four corners; the sliding drive mechanism (3) is located on the outer side of the wheel frame (1). A sliding limiting mechanism (5) located on one side is provided between the main frame and the wheel frame (1). The horizontal sliding mechanism (2) includes a guide rail mounting plate (201), a guide rail (202) and a slider (203). The main frame is connected to the guide rail mounting plate (201), the guide rail mounting plate (201) is connected to the guide rail (202), the guide rail (202) and the slider (203) slide in the horizontal direction, and the slider (203) is connected to the wheel frame (1). The sliding drive mechanism (3) includes a motor mounting plate (301), a sliding motor (302), a sliding reducer (303), a sliding transmission shaft (304), a lift (305), a lift mounting plate (306), an adapter (307), and an adapter hinge (308). The main frame is connected to the motor mounting plate (301) and the lift mounting plate (306). The motor mounting plate (301) is connected to the sliding motor (302). The lift mounting plate (306) is connected to the lift (305). The sliding motor (302) is connected to the sliding reducer (303). The sliding reducer (303) is connected to the sliding transmission shaft (304). The sliding transmission shaft (304) is connected to the lift (305). The telescopic rod of the lift (305) is connected to the adapter (307). The adapter (307) is hinged to the wheel frame (1) through the adapter hinge (308).

2. The wind tunnel full-model test section walking structure according to claim 1, characterized in that: The wheel frame (1) is a rectangular frame, the horizontal sliding mechanism (2) and the self-propelled wheel (4) are located at the four corners of the rectangular frame, and the sliding drive mechanism (3) is located on one side of the rectangular frame.

3. The wind tunnel full-model test section walking structure according to claim 1, characterized in that: The horizontal sliding mechanism (2) further includes a slider limiting plate (205), which is connected to the guide rail mounting plate (201) and located at the sliding limit position of the slider (203).

4. The wind tunnel full-model test section walking structure according to claim 1, characterized in that: The two sides of the sliding reducer (303) are respectively connected to an elevator (305) via a sliding drive shaft (304).

5. The wind tunnel full-model test section walking structure according to claim 1, characterized in that: The self-propelled wheel (4) includes a wheel bracket (401), a wheel axle (402), a bearing (403), a travel reducer (408), and a travel motor (409). The wheel frame (1) is connected to the wheel bracket (401). The wheel axle (402) is rotatably mounted on the wheel bracket (401) through the bearing (403). The wheel (410) is mounted on the wheel axle (402). The wheel bracket (401) is connected to the travel reducer (408) that drives the wheel axle (402). The travel reducer (408) is connected to the travel motor (409).

6. The wind tunnel full-model test section walking structure according to claim 5, characterized in that: The self-propelled wheel (4) further includes an outer end cover (404), a bushing (405), an oil seal (406), and an inner end cover (407). The outer end of the wheel bracket (401) is connected to the outer end cover (404) of the closed bearing groove, and the inner end of the wheel bracket (401) is connected to the inner end cover (407) of the closed bearing groove. An oil seal (406) is provided between the portion of the wheel axle (402) that passes through the inner end cover (407) and the inner end cover (407). The wheel axle (402) is fitted with a bushing (405) located between the bearing (403) and the wheel (410). An oil seal (406) is provided between the bushing (405) and the wheel bracket (401).

7. The wind tunnel full-model test section walking structure according to claim 1, characterized in that: The sliding limiting mechanism (5) includes a front limiting block (501), a rear limiting block (502) and a limiting seat (503). The main frame is connected to the limiting seat (503). The front limiting block (501) is connected to the wheel frame (1) and is located in front of the limiting seat (503). The rear limiting block (502) is connected to the wheel frame (1) and is located behind the limiting seat (503).

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