Wind tunnel sidewall dismounting tool
Patent Information
- Application Number
- CN202522129995.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-09
AI Technical Summary
目前，行业内多采用龙门吊等大型吊装设备进行转移操作，但实际应用中面临一个突出问题：部分风洞侧壁的上端并未设计专门的吊装结构
[0011]本实用新型的技术方案至少具有如下优点和有益效果：本实用新型的风洞侧壁拆装工装，在使用将拉钩通过钢索与龙门吊等吊机进行连接，然后驱动拉钩移动到侧壁主体的顶板下方，并抵在顶板下侧，然后就可以使用吊机通过拉钩将侧壁主体整体进行吊装，不仅可以将侧壁主体从风洞侧壁拆卸下来，还可以通过拉钩将侧壁主体安装在风洞上，并且通过一对拉钩的结构，可以有效地提高拉钩与顶板之间的接触面积，降低拉钩对顶板的破坏性，并且拉钩与顶板的作用点在顶板的两个地方，因此可以有更多的纵向筋参与受力，使得侧壁主体的整体结构在吊装过程中更加稳定，变形量更小。
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Figure CN224691645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hoisting devices, and more specifically, to a tooling for disassembling and assembling the sidewall of a wind tunnel. Background Technology
[0002] In the wind tunnel semi-model testing system, the semi-model rotating window mechanism of the middle section of the left side wall of the wind tunnel occupies a central position. As a key load-bearing component, it is precisely installed on the side wall of the wind tunnel test section. Its core function is to provide stable support for the semi-model, ensuring that the model maintains the preset position and attitude in the high-speed, complex airflow environment. This is directly related to the accuracy and reliability of the test data. However, the hoisting of sidewalls remains a major technical challenge during the dismantling and maintenance of wind tunnels. Wind tunnel sidewalls are typically characterized by their long length, height, and weight, but relatively thin thickness. This shape makes them prone to deformation during hoisting due to uneven stress. Currently, the industry mostly uses large hoisting equipment such as gantry cranes for transfer operations, but a prominent problem arises in practical applications: the upper part of some wind tunnel sidewalls lacks a dedicated hoisting structure. To address this issue, operators often employ a temporary solution of directly suspending the hook from the top of the side wall. However, this connection method has significant drawbacks: firstly, the small contact area between the hook and the top leads to localized stress concentration, which can cause plastic deformation of the components at the top of the side wall over long periods or with repeated hoisting; secondly, the instability of non-dedicated connection structures is poor, and they may loosen due to vibration or shaking during hoisting, affecting not only work efficiency but also posing a serious threat to equipment and personnel safety. Therefore, it is necessary to design a safe and efficient hoisting device that can both disperse stress and avoid damage to components, while ensuring the stability of the connection. Utility Model Content The purpose of this utility model is to provide a wind tunnel sidewall disassembly and assembly tool that can efficiently hoist the wind tunnel sidewall.
[0003] This utility model is achieved through the following technical solution: The wind tunnel sidewall assembly and disassembly fixture of this utility model includes a sidewall body, a top plate horizontally disposed at the upper end of the sidewall body, a plurality of longitudinal ribs disposed on the lower side of the top plate, including a pair of opposing C-shaped hooks, a connecting plate for connecting the pair of hooks, and a connecting hole disposed on the upper side of the hooks; the connecting plate is disposed above the top plate, and the plurality of longitudinal ribs are distributed along the length direction of the top plate; the pair of hooks are respectively disposed on both sides of one of the longitudinal ribs.
[0004] Furthermore, the longitudinal rib located in the middle of the top plate is designated as the first longitudinal rib, and the remaining longitudinal ribs are designated as the second longitudinal ribs; the first longitudinal rib is located between a pair of hooks.
[0005] Furthermore, the side of each pair of hooks furthest from the first longitudinal rib is positioned close to the second longitudinal rib.
[0006] Furthermore, a limiting groove is provided on the lower side of the first longitudinal rib, and a limiting component is provided between the pair of hooks; when the hooks abut against the lower side of the top plate, the limiting component is engaged in the limiting groove.
[0007] Furthermore, the limiting assembly includes a connecting rod for connecting a pair of hooks, a pair of sliders slidably disposed at both ends of the connecting rods, a hinge rod hinged to both ends of the sliders, and a limiting block for connecting the end of the adjacent hinge rod away from the slider; when the hooks abut against the lower side of the top plate, the limiting block is engaged in the limiting groove; a pair of limiting blocks are provided, the pair of limiting blocks are located at the same height, the pair of limiting blocks are respectively disposed on both sides of the slider, and the limiting block is used to connect a pair of hinge rods located on the same side of the connecting rods.
[0008] Furthermore, the limiting assembly also includes a driving device for driving a pair of sliders to move relative to each other along the connecting rod; the driving device includes a screw threadedly connected to both of the sliders, and a motor for driving the screw to rotate; the axial direction of the screw is parallel to the axial direction of the connecting rod, and both ends of the screw are rotatably connected to a pair of hooks respectively, with the thread directions at both ends of the screw being opposite.
[0009] Furthermore, the limiting groove is provided with slots on both sides along the horizontal direction; when the hook abuts against the lower side of the top plate, a pair of limiting blocks are respectively engaged in a pair of slots.
[0010] Furthermore, a reinforcing rib is provided at the connection between the hook and the connecting plate.
[0011] The technical solution of this utility model has at least the following advantages and beneficial effects: The wind tunnel sidewall disassembly and assembly fixture of this utility model connects the hook to a gantry crane or other crane via a steel cable, then drives the hook to move to the bottom of the top plate of the sidewall body and abuts against the bottom side of the top plate. Then, the crane can use the hook to lift the sidewall body as a whole. This not only allows the sidewall body to be disassembled from the wind tunnel sidewall, but also allows it to be installed on the wind tunnel via the hook. Furthermore, the structure of a pair of hooks can effectively increase the contact area between the hook and the top plate, reduce the destructive force of the hook on the top plate, and since the points of contact between the hook and the top plate are at two points on the top plate, more longitudinal ribs can participate in the stress, making the overall structure of the sidewall body more stable and less deformed during the lifting process. Attached Figure Description
[0012] Figure 1A schematic diagram of the structure of the wind tunnel sidewall disassembly and assembly fixture provided in this embodiment of the utility model; Figure 2 A partial sectional view along the vertical direction of the wind tunnel sidewall disassembly and assembly tooling provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the hook portion provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the limiting component provided in an embodiment of the present utility model; Figure 5 A schematic diagram of the structure of the main body of the side wall provided in an embodiment of this utility model; Figure 6 for Figure 5 Enlarged view of part A in the middle.
[0013] Icons: 10-Side wall main body, 11-Top plate, 12-First longitudinal rib, 13-Second longitudinal rib, 14-Limiting groove, 15-Card slot, 20-Hook, 21-Connecting plate, 22-Connecting hole, 23-Reinforcing rib, 30-Limiting component, 31-Connecting rod, 32-Slider, 33-Hinge rod, 34-Limiting block, 35-Screw, 36-Motor. Detailed Implementation
[0014] Example The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 -Appendix Figure 6 As shown, the wind tunnel sidewall assembly / disassembly fixture of this embodiment includes a sidewall body 10, a top plate 11 horizontally disposed at the upper end of the sidewall body 10, a plurality of longitudinal ribs disposed on the lower side of the top plate 11, including a pair of opposing C-shaped hooks 20, a connecting plate 21 for connecting the pair of hooks 20, and a connecting hole 22 disposed on the upper side of the hooks 20; the connecting plate 21 is disposed above the top plate 11, and the plurality of longitudinal ribs are distributed along the length direction of the top plate 11; the pair of hooks 20 are respectively disposed on both sides of one of the longitudinal ribs. Specifically, the hook 20 is connected to a gantry crane or other crane via steel cables. The hook 20 is then driven to move below the top plate 11 of the side wall body 10 and rest against the underside of the top plate 11. The crane can then use the hook 20 to lift the side wall body 10 as a whole. This not only allows the side wall body 10 to be disassembled from the wind tunnel side wall, but also allows it to be installed on the wind tunnel using the hook 20. The structure of the pair of hooks 20 effectively increases the contact area between the hook 20 and the top plate 11, reducing the destructive impact of the hook 20 on the top plate 11. Furthermore, since the points of contact between the hook 20 and the top plate 11 are at two locations on the top plate 11, more longitudinal ribs can participate in the stress, making the overall structure of the side wall body 10 more stable and reducing deformation during the lifting process.
[0015] In this embodiment, the longitudinal rib located in the middle of the top plate 11 is designated as the first longitudinal rib 12, and the remaining longitudinal ribs are designated as the second longitudinal ribs 13. The first longitudinal rib 12 is positioned between a pair of hooks 20. The side of each pair of hooks 20 furthest from the first longitudinal rib 12 is positioned close to the second longitudinal rib 13. Specifically, positioning the hooks 20 in the middle of the top plate 11 makes the force on the side wall body 10 more balanced. The hooks 20 are positioned closer to the second longitudinal ribs 13 because the structure of the second longitudinal ribs 13 is more complete, allowing them to better bear the force. Furthermore, the fact that the two hooks 20 are close to different second longitudinal ribs allows for better force distribution through more of the second longitudinal ribs 13.
[0016] In this embodiment, a limiting groove 14 is provided on the lower side of the first longitudinal rib 12, and a limiting component 30 is provided between the pair of hooks 20. When the hooks 20 abut against the lower side of the top plate 11, the limiting component 30 is engaged in the limiting groove 14. Specifically, since the top plate 11 is a planar structure, there is no limiting structure for the relative position between the top plate 11 and the hooks 20. Thus, in the event of a sudden situation or vibration, there is a possibility that the hooks 20 and the top plate 11 may slide relative to each other, and the side wall body 10 may slide off the hooks 20. In order to avoid the risk, the limiting component 30 can be used in conjunction with the limiting groove 14 to make a rigid connection between the hooks 20 and the top plate 11. However, this rigid connection mainly serves the purpose of limiting and protecting, and does not bear the main force during normal hoisting.
[0017] The limiting component 30 in this embodiment includes a connecting rod 31 for connecting a pair of hooks 20, a pair of sliders 32 respectively slidably disposed at both ends of the connecting rods 31, a hinge rod 33 hinged to both ends of the sliders 32, and a limiting block 34 for connecting the end of the adjacent hinge rod 33 away from the slider 32; when the hooks 20 abut against the lower side of the top plate 11, the limiting block 34 is engaged in the limiting groove 14; there is a pair of limiting blocks 34, the pair of limiting blocks 34 are located at the same height, the pair of limiting blocks 34 are respectively disposed on both sides of the slider 32, and the limiting block 34 is used to connect the pair of hinge rods 33 located on the same side of the connecting rods 31. The limiting assembly 30 further includes a driving device for driving a pair of sliders 32 to move relative to each other along the connecting rod 31; the driving device includes a screw 35 that is threadedly connected to both sliders 32, and a motor 36 for driving the screw 35 to rotate; the axial direction of the screw 35 is parallel to the axial direction of the connecting rod 31, and both ends of the screw 35 are rotatably connected to a pair of hooks 20, with the thread directions at both ends of the screw 35 being opposite. The limiting groove 14 has slots 15 on both sides along the horizontal direction; when the hooks 20 abut against the lower side of the top plate 11, a pair of limiting blocks 34 are respectively engaged in a pair of slots 15. Specifically, the limiting block 34 and the hinge rod 33 are hinged. When the hook 20 is hung on the underside of the top plate 11, the motor 36 drives the screw 35 to rotate. Due to the different thread directions at both ends of the screw 35, the sliders 32 at both ends of the screw 35 will move in opposite directions. When a pair of sliders 32 approach each other, the hinge rod 33 can push a pair of limiting blocks 34 into a pair of slots 15, thereby achieving the engagement of the limiting component 30 and the slots 15. This engagement also allows for a temporary rigid connection between the hook 20 and the first longitudinal rib 12. Since the space between the pair of hooks 20 is limited, the output shaft of the motor 36 can be perpendicular to the screw 35, and the two can be connected by a tapered bolt. This method eliminates the need for manual rigid connection between the hook 20 and the top plate 11 at the top of the side wall body 10; remote operation is sufficient. Furthermore, since the limiting block 34 has a certain length, even if the hook 20 is not completely in the middle of the top plate 11, the limiting block 34 can still be well inserted into the slot 15, so the device has a high fault tolerance rate.
[0018] In this embodiment, the connection between the hook 20 and the connecting plate 21 is provided with a reinforcing rib 23.
[0019] In summary, the wind tunnel sidewall assembly / disassembly fixture of this embodiment involves connecting the hook 20 to a gantry crane or similar crane via steel cables. The hook 20 is then driven to move below the top plate 11 of the sidewall body 10 and rests against the underside of the top plate 11. The crane can then use the hook 20 to hoist the sidewall body 10 as a whole. This not only allows the sidewall body 10 to be disassembled from the wind tunnel sidewall but also to be installed on the wind tunnel using the hook 20. Furthermore, the structure of the pair of hooks 20 effectively increases the contact area between the hooks 20 and the top plate 11, reducing the destructive potential of the hooks 20 on the top plate 11. Since the points of contact between the hooks 20 and the top plate 11 are at two points on the top plate 11, more longitudinal ribs can participate in the stress distribution, making the overall structure of the sidewall body 10 more stable and reducing deformation during hoisting. The above is merely a preferred embodiment of this utility model and is not intended to limit the scope of the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.