Wind-prevention device for tomato planting capable of enhancing flight stability of male bees

Abstract

The utility model provides a tomato planting windproof device that can enhance the flight stability of male bees, relates to the technical field of agricultural planting auxiliary equipment, and comprises a support frame and a guide vane, the support frame is vertically arranged along the extension direction of the planting area, the guide vane is vertically installed at one end of the support frame and is horizontal to the ground, the cross section of each guide vane is in the wing type structure of the blunt front edge, the sharp rear edge and the convex upper surface, the front edge of the guide vane faces the windward side, the utility model can comb the airflow through special aerodynamic design, forms a low-turbulence stable airflow area in the planting area, thereby improving the flight conditions of pollinating insects and improving the pollination efficiency.

Description

Technical Field

[0001] This utility model relates to the field of agricultural planting auxiliary equipment technology, specifically to a windproof device for tomato planting that can enhance the flight stability of drones. Background Technology

[0002] In open field cultivation of tomatoes, wind is a key environmental factor affecting yield. On the one hand, continuous or excessively strong airflow can cause flowers and young fruits to fall off; on the other hand, for tomato varieties that rely on insects such as bees for pollination, unstable airflow (turbulence) can severely interfere with their flight attitude and navigation ability, increasing the difficulty of hovering stably and landing accurately on flowers, thus reducing the number of effective pollinations per unit time, ultimately leading to a decrease in pollination rate, and affecting fruit set rate and final yield.

[0003] To address this issue, agricultural production typically incorporates prevailing wind directions into its planning and implementation of windbreak measures. Currently, two main types of windbreak measures are commonly used in the fields: the first is to install windbreak nets, which can reduce average wind speed to some extent, but they can also create fine and complex turbulence behind the nets, resulting in poor airflow quality; the second is to construct solid windbreak walls, which, although having low wind speeds on their leeward side, still severely impede natural airflow in the fields, potentially leading to localized high temperatures or humidity.

[0004] In summary, most of the existing wind protection technologies are passive defenses against the prevailing wind direction, mainly focusing on reducing wind speed to protect the plants themselves, rather than taking an aerodynamic approach to actively optimize airflow quality and create a stable and efficient microenvironment for pollinating insects to fly. Utility Model Content

[0005] To overcome the problems in the prior art, this utility model provides a tomato planting windproof device that can enhance the flight stability of drones, thereby reducing wind speed to protect tomato plants. It can use a special aerodynamic design to organize the airflow and form a low-turbulence stable airflow zone in the planting area, thereby improving the flight conditions of pollinating insects and increasing pollination efficiency.

[0006] A windproof device for tomato planting that can enhance the flight stability of drones includes a support frame and guide vanes. The support frame is vertically set along the extension direction of the planting area, and the guide vanes are vertically installed at one end of the support frame and are horizontal to the ground. Each guide vane has a cross-section with a blunt leading edge, a sharp trailing edge, and a convex upper surface, forming an airfoil structure. The leading edge of the guide vane faces the windward side.

[0007] Furthermore, one end of the guide vane is rotatably mounted to the support frame, and the other end is equipped with an angle adjustment mechanism.

[0008] Furthermore, the angle adjustment mechanism includes a vertically arranged linkage rod, which is rotatably connected to one end of all the guide vanes, and the lower end of the linkage rod is a lead screw structure.

[0009] Furthermore, the ratio of the vertical spacing between the guide vanes to the chord length of the guide vanes is 0.8-2.0.

[0010] Furthermore, the chord-to-thickness ratio of the guide vane is 12%-20%.

[0011] Furthermore, the surface of the guide vane is uniformly provided with several small holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The guide vane design of this utility model can actively organize disordered and turbulent natural winds into smooth, low-speed laminar or low-turbulence airflows, forming a flight microenvironment in the crop area on the leeward side of the device. This enhances the flight stability of pollinating insects such as drones, enabling them to easily navigate, hover, and pollinate, thereby improving the pollination rate.

[0013] 2. By setting an angle adjustment mechanism, this utility model allows users to simultaneously adjust the angle of attack of all guide vanes according to the actual wind force and direction, thereby achieving precise control of the airflow in the microenvironment and making it highly adaptable. Attached Figure Description

[0014] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the air guide vane structure of this utility model.

[0016] Reference numerals: 1-Support frame, 2-Guide vane, 21-Small hole, 3-Angle adjustment mechanism, 31-Linkage rod, 32-Lead screw Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] See Figure 1 , Figure 2This invention proposes a windproof device for tomato planting that enhances the flight stability of drones. It includes a support frame 1 set along the edge of the tomato planting area and several guide vanes 2 mounted on the support frame 1. The support frame 1 serves as the skeleton of the entire device, providing stable support. In this embodiment, the support frame 1 consists of multiple uprights spaced apart along the extension direction of the planting area, and crossbeams connecting these uprights, forming an open frame. To further enhance wind resistance, diagonal bracing is connected to the lower part of the support frame 1 to ensure that the device will not tip over in windy weather. The air guide vanes 2 are arranged vertically at preset intervals on the support frame 1 and installed in a horizontal posture. The cross-section of each air guide vane 2 is an airfoil structure with a blunt leading edge, a sharp trailing edge, and an upwardly convex upper surface. The leading edge of the air guide vane 2 is uniformly oriented towards the windward direction. When the wind blows, the airfoil structure can guide the airflow to flow smoothly along its upper and lower surfaces, avoiding violent airflow separation, thereby transforming the turbulence at the front end into a straight and stable airflow at the rear end.

[0019] See Figure 1 , Figure 2 , Figure 3 In a preferred embodiment, to adapt to different wind conditions, the guide vane 2 is rotatably mounted to the support frame 1, for example, by pivoting via a rotating shaft; the guide vane 2 is also equipped with an angle adjustment mechanism 3 to change the angle of attack of the guide vane 2. The angle adjustment mechanism is preferably a vertical linkage rod 31. The linkage rod 31 is connected to the end of each guide vane 2 or a cantilever near the end through a hinge point. The lower end of the linkage rod 31 is further designed as a lead screw 32 structure. By rotating the nut or handwheel on the lead screw 32, the linkage rod 31 can be moved up and down precisely, thereby driving all the guide vanes 2 to deflect synchronously and evenly, and accurately adjusting the airflow guidance angle.

[0020] The ratio of the vertical spacing between the guide vanes 2 to the chord length of the guide vane 2, i.e. the straight distance from the leading edge to the trailing edge, is preferably 0.8 to 2.0; the chord-to-thickness ratio of the guide vane 2, i.e. the ratio of the thickness at the thickest part of the vane to the chord length, is preferably 12% to 20%, so as to ensure sufficient ventilation while maximizing the flow stabilizing effect of the vanes.

[0021] See Figure 3 In a preferred embodiment, the surface of the air guide vane 2 is uniformly provided with a plurality of small holes 21. The small holes allow a small amount of airflow to penetrate the vane itself, which helps to balance the instantaneous pressure difference between the upper and lower surfaces of the vane, suppress the wingtip vortex that may be generated at a large angle of attack, and make the airflow on the leeward side more stable.

[0022] Work process: Install this device along the field ridges on the windward side of the tomato planting area. When the wind blows, the airflow first contacts the blunt leading edge of the guide vane 2, is smoothly divided into upper and lower streams, and flows along the curved surface of the airfoil. Due to the airfoil's effect, the airflow's energy is partially consumed, its speed is reduced, and its flow direction is regulated. After being combed through by several vanes, a large area with low wind speed and stable airflow is formed in the tomato planting area on the leeward side of the device. In this area, pollinating insects such as drones are not disturbed by strong winds and turbulence, and can fly, hover, and visit flowers stably, thereby improving the success rate and efficiency of pollination. Users can also adjust the vane angle by operating the screw 32 according to changes in wind force to achieve the best windproof and stable airflow effect.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A windbreak device for tomato cultivation that enhances the flight stability of drones, characterized in that, It includes a support frame (1) and a guide vane (2). The support frame (1) is set vertically along the extension direction of the planting area. The guide vane (2) is installed vertically at one end of the support frame (1) and is horizontal to the ground. The cross-section of each guide vane (2) is an airfoil structure with a blunt leading edge, a sharp trailing edge, and a raised upper surface. The leading edge of the guide vane (2) faces the windward side.

2. The tomato planting windbreak device that enhances the flight stability of drones according to claim 1, characterized in that, One end of the guide vane (2) is rotatably mounted to the support frame (1), and the other end is equipped with an angle adjustment mechanism (3).

3. The tomato planting windbreak device that enhances the flight stability of drones according to claim 2, characterized in that, The angle adjustment mechanism (3) includes a vertically arranged linkage rod (31), which is rotatably connected to one end of all the guide vanes (2), and the lower end of the linkage rod (31) is a lead screw (32) structure.

4. The tomato planting windbreak device that enhances the flight stability of drones according to claim 1, characterized in that, The ratio of the vertical spacing between the guide vanes (2) to the chord length of the guide vanes (2) is 0.8-2.

0.

5. The tomato planting windbreak device that enhances the flight stability of drones according to claim 1, characterized in that, The chord-to-thickness ratio of the guide vane (2) is 12%-20%.

6. The tomato planting windbreak device that enhances the flight stability of drones according to claim 1, characterized in that, The surface of the guide vane (2) is uniformly provided with several small holes (21).

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