Insect prevention device for fresh tomatoes

Abstract

The utility model belongs to the field of insect prevention devices, and particularly relates to a fresh tomato insect prevention device which comprises a self-adaptive wind-resistant frame and a high-elasticity net cover, the self-adaptive wind-resistant frame is sleeved with the high-elasticity net cover, and the self-adaptive wind-resistant frame comprises a central rod set, a plurality of side rod sets and a plurality of wind receiving telescopic rod sets; the central rod set comprises a central fixing rod, a telescopic rod and a spring, a first telescopic hole is formed in the upper end of the central fixing rod, the lower end of the telescopic rod is slidably arranged in the first telescopic hole, and the spring is arranged in the first telescopic hole and located between the lower end of the telescopic rod and the first telescopic hole. The telescopic rod moves downwards in the direction of the first telescopic hole, the telescopic rod moves downwards to enable the top of the wind receiving face to move downwards, the length of the upper edge and the lower edge of the wind receiving face is not changed, the height is reduced, the area of the wind receiving face is decreased, and therefore the wind power is weakened when the wind receiving device receives wind, and the good wind resistance performance is achieved.

Description

Technical Field

[0001] The present application belongs to the field of insect-proof devices, and in particular relates to an insect-proof device for fresh tomatoes. Technical Background

[0002] Insect-proof net is a kind of mesh fabric made of polyethylene with anti-aging, anti-ultraviolet and other chemical additives as the main raw material, which is made by drawing. It has the advantages of high tensile strength, heat resistance, water resistance, corrosion resistance, aging resistance, non-toxic and tasteless, and easy waste disposal. It can prevent common pests such as flies and mosquitoes. It is easy to store for regular use. If it is made of new materials and properly stored, its life span can reach about 3-5 years.

[0003] The insect-proof net blocks less light and does not need to be covered during the day and uncovered at night or covered from the front and uncovered from the back. It should be covered throughout the entire process to leave no chance for pests to invade, in order to achieve a satisfactory insect-proof effect.

[0004] When a small arch shed is used for covering cultivation, the arch should be higher than the crops to prevent the leaves from sticking to the insect-proof net, so as to prevent pests such as the yellow-striped flea beetle outside the net from eating the leaves and laying eggs on them.

[0005] The second batch of tomatoes is usually planted in July and August each year. However, in the northwest region, the wind and sand are strong in July and August, and the existing insect-proof nets cannot provide good wind protection on windy days.

[0006] In the prior art, there is a utility model patent with application number CN220402533U, and the patent name is a windproof vegetable planting greenhouse with an automatically lifting roof. It provides a windproof vegetable planting greenhouse with an automatically lifting roof, including columns, top beams, lifting roof components, lifting drive mechanisms, and film rolls. By setting ventilation channels between the individual planting greenhouses, it has good ventilation function, which is conducive to vegetable planting, and at the same time improves the stability of the greenhouse, and can withstand extreme typhoon weather. A lifting roof component that can be lifted can lower the roof to the ground, leaving only the frame of columns and top beams without a windproof surface, ensuring that the greenhouse has good windproof performance when a typhoon comes. However, the following problems still exist:

[0007] Although the lifting roof assembly can reduce the windward surface in extreme conditions of typhoon days through the lifting drive mechanism, so that the greenhouse has better wind protection performance when the typhoon comes, the existing greenhouse lifting function has poor flexibility. In gusty weather, it cannot respond in time to reduce the windward area, and its top beam cannot be raised or lowered. If the top beam is too high, the top of the overall structure will still be affected by the wind, resulting in the poor wind protection performance of the existing technology. Summary of the invention

[0008] The purpose of the present application is to address the problem that the top beam in the prior art cannot be raised or lowered, and that a top beam that is too high will still cause the top of the overall structure to be affected by wind, thereby resulting in poor windproof performance of the insect-proof net in the prior art.

[0009] To achieve the above object, the present application provides the following technical solutions:

[0010] A fresh food tomato insect prevention device, comprising: an adaptive wind-resistant frame and a high-elastic net cover, the high-elastic net cover is sleeved on the adaptive wind-resistant frame, and the adaptive wind-resistant frame includes a central rod group, a plurality of side rod groups and a plurality of wind-receiving telescopic rod groups;

[0011] The central rod group includes a central fixed rod, a telescopic rod and a spring. A first telescopic hole is opened at the upper end of the central fixed rod, the lower end of the telescopic rod is slidably arranged in the first telescopic hole, and the spring is arranged in the first telescopic hole and located at the lower end of the telescopic rod;

[0012] A plurality of the side rod groups are arranged circumferentially and equidistantly around the central rod group;

[0013] A plurality of the wind-receiving telescopic rod groups are hinged between the upper ends of the side rod groups and the upper ends of the plurality of central rod groups.

[0014] Preferably, a first fixing plate is arranged at the lower end of the central fixed rod, and at least one first fixing hole is opened on the first fixing plate.

[0015] Preferably, a second fixing plate is arranged at the lower end of the side rod group, and at least one second fixing hole is opened on the second fixing plate.

[0016] Preferably, a plurality of branches are arranged around the upper end of the telescopic rod perpendicular to the telescopic rod in the circumferential direction.

[0017] Preferably, the wind-receiving telescopic rod group includes a first telescopic part and a second telescopic part. One end of the first telescopic part is telescopically matched with one end of the second telescopic part. The other end of the first telescopic part is hinged to the branch, and the other end of the second telescopic part is hinged to the upper end of the side rod group.

[0018] Preferably, the high-elastic net cover includes a side net and a top net that are butt-jointed with each other. The side net surrounds the outside of a plurality of the side rod groups in the circumferential direction, and the top net covers the upper sides of the central fixed rod and a plurality of the wind-receiving telescopic rod groups.

[0019] Preferably, a fixing area is arranged at the center of the top net, and the fixing area is fixedly connected to the upper end of the central fixed rod.

[0020] Preferably, it further includes an auxiliary component. The auxiliary component includes a guiding collar, a clamping ring and a connecting rod. The guiding collar is sleeved on the telescopic rod. The clamping ring is fixed to the central fixed rod and is concentric with the guiding collar. One end of the connecting rod is fixed to the guiding collar and the other end is fixed to the clamping ring.

[0021] Preferably, the auxiliary component further includes a plurality of stable bent rods, and both ends of any one of the stable bent rods are fixedly connected to both ends of the connecting rod.

[0022] Beneficial effects: When the windward surface (i.e., the insect-proof net covering the upper side of the central fixing rod and several wind-receiving telescopic rod groups) is subjected to horizontal or nearly horizontal wind force, the telescopic rod displaces downward along the direction of the first telescopic hole, and the displacement distance is proportional to the magnitude of the wind force received. The downward displacement of the telescopic rod causes the top of the windward surface to move downward, resulting in the upper and lower side lengths of the windward surface remaining unchanged while the height decreases, and the area of the windward surface becomes smaller. Thus, the wind force on this application when receiving wind is weakened, and it has good wind resistance. Description of the Drawings

[0023] Figure 1 is a perspective structure diagram of the fresh food tomato insect-proof device described in the embodiment;

[0024] Figure 2 is an axonometric view of the adaptive wind-resistant frame described in the embodiment;

[0025] Figure 3 is an axonometric view of the central rod group described in the embodiment;

[0026] Figure 4 is a sectional view of the central rod group described in the embodiment;

[0027] Figure 5 is an axonometric view of the wind-receiving telescopic rod group described in the embodiment;

[0028] Figure 6 is a sectional view of the side rod group described in the embodiment;

[0029] Figure 7 is a sectional view of the auxiliary component described in the embodiment;

[0030] Figure 8 is a front view of the high-elastic net cover described in the embodiment;

[0031] In the figure: Adaptive wind-resistant frame 100, Central rod group 110, Central fixing rod 111, Telescopic rod 112, Spring 113, First telescopic hole 114, First fixing plate 115, First fixing hole 116, Branch 117, Side rod group 120, Second fixing plate 121, Second fixing hole 122, Wind-receiving telescopic rod group 130, First telescopic part 131, Second telescopic part 132, High-elastic net cover 200, Side net 210, Top net 220, Auxiliary component 300, Guide sleeve ring 310, Snap ring 320, Connecting rod 330, Stable bent rod 340. Detailed Embodiments

[0032] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will further describe the technical solutions of the present application in conjunction with the drawings of the embodiments of the present application. The present application is not limited to the following specific embodiments.

[0033] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present application, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of the present patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] In a specific embodiment of the present application, as Figures 1 to 8 shown, there is a fresh food tomato pest control device, including: an adaptive wind-resistant frame 100 and a high-elastic net cover 200. The high-elastic net cover 200 is sleeved on the adaptive wind-resistant frame 100. The adaptive wind-resistant frame 100 includes a central rod group 110, a plurality of side rod groups 120 and a plurality of wind-receiving telescopic rod groups 130;

[0035] The central rod group 110 includes a central fixed rod 111, a telescopic rod 112 and a spring 113. The upper end of the central fixed rod 111 is provided with a first telescopic hole 114. The lower end of the telescopic rod 112 is slidably disposed in the first telescopic hole 114. The spring 113 is disposed in the first telescopic hole 114 and is located at the lower end of the telescopic rod 112;

[0036] A plurality of the side rod groups 120 are arranged circumferentially and equidistantly around the central rod group 110;

[0037] A plurality of the wind-receiving telescopic rod groups 130 are hinged between the upper ends of the side rod groups 120 and the upper ends of the plurality of central rod groups 110.

[0038] In a specific implementation process, after planting tomatoes, the central fixing rod 111 is inserted into the ground and fixed in the exact middle of the tomato planting area. The spring 113 is placed into the first telescopic hole 114, and then the telescopic rod 112 is placed into the first telescopic hole 114, with the lower end of the telescopic rod 112 pressing on the spring 113. The supporting effect of the spring 113 positions the hinge point at the upper end of the telescopic rod 112 at a predetermined height. Then, one end of the wind-receiving telescopic rod group 130 is hinged to the upper end of the telescopic rod 112. A plurality of side rod groups 120 are arranged circumferentially and equidistantly outside the tomato planting area around the central rod group 110, and the side rod groups 120 are inserted into the ground. The other end of the wind-receiving telescopic rod group 130 is hinged to the upper end of the side rod group 120. Finally, the high-elastic net cover 200 is surrounded outside the side rod group 120 and covers the upper sides of the central fixing rod 111 and a plurality of the wind-receiving telescopic rod groups 130;

[0039] When the area where the tomato planting area is located is windy, the insect-proof net covering the upper sides of a plurality of the wind-receiving telescopic rod groups 130 is affected by the wind and becomes a wind-receiving inclined plane. When the wind-receiving inclined plane (i.e., the insect-proof net covering the upper sides of the central fixing rod 111 and a plurality of the wind-receiving telescopic rod groups 130) is subjected to horizontal or nearly horizontal wind force, an obliquely downward component force perpendicular to the wind-receiving inclined plane will be generated. This component force will be transmitted to the telescopic rod 112 through the hinge point. Since the degree of freedom of the telescopic rod 112 is restricted by the first telescopic hole 114, the telescopic rod 112 will be subjected to a downward pressure when the wind-receiving surface is subjected to the above-mentioned component force. Thus, when the wind-receiving surface is subjected to horizontal or nearly horizontal wind force, the telescopic rod 112 displaces downward along the direction of the first telescopic hole 114, and the displacement distance is proportional to the magnitude of the wind force received. At the same time, the wind-receiving telescopic rod group 130 contracts as the telescopic rod 112 displaces downward. The downward displacement of the telescopic rod 112 causes the top of the wind-receiving surface to move downward, resulting in the upper and lower side lengths of the wind-receiving surface remaining unchanged while the height decreases and the area of the wind-receiving surface becomes smaller. Consequently, the wind force on this application during windy conditions is weakened, thereby having good wind resistance performance.

[0040] Beneficial effects: When the wind-receiving surface (i.e., the insect-proof net covering the upper sides of the central fixing rod 111 and a plurality of the wind-receiving telescopic rod groups 130) is subjected to horizontal or nearly horizontal wind force, the telescopic rod 112 displaces downward along the direction of the first telescopic hole 114, and the displacement distance is proportional to the magnitude of the wind force received. The downward displacement of the telescopic rod 112 causes the top of the wind-receiving surface to move downward, resulting in the upper and lower side lengths of the wind-receiving surface remaining unchanged while the height decreases and the area of the wind-receiving surface becomes smaller. Consequently, the wind force on this application during windy conditions is weakened, thereby having good wind resistance performance.

[0041] In the above implementation process, fixing the central fixing rod 111 by inserting it into the ground is a time-consuming and laborious fixing method. In a possible embodiment, a first fixing plate 115 is provided at the lower end of the central fixing rod 111, and at least one first fixing hole 116 is formed in the first fixing plate 115. When fixing the central fixing rod 111, only need to place the central fixing rod 111 at the corresponding position to be fixed, and then insert a nail or a fixing rod into the ground through the first fixing hole 116 to well fix the central fixing rod 111.

[0042] In the above implementation process, fixing the side rod group 120 by inserting it into the ground is a time-consuming and laborious fixing method. In a possible embodiment, a second fixing plate 121 is provided at the lower end of the side rod group 120, and at least one second fixing hole 122 is formed in the second fixing plate 121. When fixing the side rod group 120, only need to place the side rod group 120 at the corresponding position to be fixed, and then insert a nail or a fixing rod into the ground through the second fixing hole to well fix the side rod group 120.

[0043] In the above implementation process, the wind-receiving telescopic rod group 130 is directly hinged between the upper ends of the side rod group 120 and several central rod groups 110. When the number of the wind-receiving telescopic rod groups 130 is too large, if the upper end of the telescopic rod 112 is too thin, it cannot connect all the wind-receiving telescopic rod groups 130. If the upper end of the telescopic rod 112 is thickened, although it can connect all the wind-receiving telescopic rod groups 130, the overly thick upper end of the telescopic rod 112 will consume too much manufacturing material. In a possible embodiment, a plurality of branches 117 are circumferentially and perpendicularly arranged around the upper end of the telescopic rod 112. Each wind-receiving telescopic rod group 130 corresponds to one branch 117 and is hinged on the branch 117, thus avoiding the above problems.

[0044] Furthermore, the wind-receiving telescopic rod group 130 includes a first telescopic part 131 and a second telescopic part 132. One end of the first telescopic part 131 is telescopically matched with one end of the second telescopic part 132. The other end of the first telescopic part 131 is hinged to the branch 117, and the other end of the second telescopic part 132 is hinged to the upper end of the side rod group 120. Through the telescopically matched first telescopic part 131 and second telescopic part 132, the function that the wind-receiving telescopic rod group 130 in the present application needs to expand and contract as the telescopic rod 112 displaces can be well realized.

[0045] Furthermore, the high-elastic mesh cover 200 includes a side mesh 210 and a top mesh 220 that are butt-jointed with each other. The side mesh 210 circumferentially surrounds the outside of several side rod groups 120, and the top mesh 220 covers the upper sides of the central fixing rod 111 and several wind-receiving telescopic rod groups 130.

[0046] In the above implementation process, if the high-elasticity mesh cover 200 is fixedly connected to the adaptive wind-resistant frame 100 everywhere, when the wind telescopic rod group expands and contracts as the telescopic rod 112 displaces, the top net 220 covering the upper sides of the central fixed rod 111 and several wind-receiving telescopic rod groups 130 will drop from a higher top shape to a lower top shape. If the top net 220 is fixedly connected to the central fixed rod 111 and several wind-receiving telescopic rod groups 130 everywhere, the top net 220 near the upper side will be subjected to the pulling force of the fixed points of the adjacent wind-receiving telescopic rod groups 130 that contract and separate, which easily causes the top net 220 to be damaged. In a possible embodiment, a fixed area is provided at the center of the top net 220, and the fixed area is fixedly connected to the upper end of the central fixed rod 111, and the area of the top net 220 corresponding to the central fixed rod 111 is fixedly connected. When the top net 220 near the upper side is subjected to the pulling force of the fixed points of the adjacent wind-receiving telescopic rod groups 130 that contract and separate, due to the elasticity of the high-elasticity mesh cover 200, the top net 220 near the lower side will be pulled upward for a certain compensation. The process is as follows: when the entire top net 220 drops as the telescopic rod 112 displaces, the covering volume of the top net 220 becomes smaller, and at the same time its surface area becomes smaller. For the sake of easy understanding, take an extreme example. If the telescopic rod 112 drops to the same height as the side rod group 120, the area covered by the top net 220 is the bottom area of the trapezoidal top net 220 as shown normally in the figure, which is much smaller than the area of the trapezoidal top net 220. There will be excess top net 220 being moved to the position of the original top net 220 near the upper side, thereby making compensation and preventing the top net 220 near the upper side from being damaged due to excessive force.

[0047] In the above implementation process, when the present application is affected by the strong wind force, the telescopic rod 112 shortens in the first telescopic hole 114. However, the brackets used for the insect-proof net are generally made of relatively light and low-cost materials, and this kind of material is not stable as a support for the above-mentioned telescopic structure. When the strong wind continuously biases to one side, it is easy for the telescopic rod 112 to be subjected to a unilateral radial force, and this force is transmitted to the first telescopic hole 114, resulting in damage to the structure of the first telescopic hole 114, and the situation where the telescopic rod 112 swings in the direction perpendicular to its extending direction occurs. In a possible embodiment, an auxiliary component 300 is further included. The auxiliary component 300 includes a guiding collar 310, a clamping ring 320 and a connecting rod 330. The guiding collar 310 is sleeved on the telescopic rod 112. The clamping ring 320 is fixed to the central fixed rod 111 and is concentrically arranged with the guiding collar 310. One end of the connecting rod 330 is fixed to the guiding collar 310, and the other end is fixed to the clamping ring 320. The clamping ring 320 and the collar are concentrically arranged and are connected by the connecting rod 330, which further ensures that the telescopic rod 112 stably linearly expands and contracts in the first telescopic hole 114. When subjected to a unilateral radial force, the collar prevents the telescopic rod 112 from swinging, stabilizing the telescopic rod 112 to only move linearly and avoiding damage to the structure of the first telescopic hole 114.

[0048] Furthermore, the auxiliary component 300 further includes a plurality of stable bent rods 340. Both ends of any one of the stable bent rods 340 are fixedly connected to both ends of the connecting rod 330. One end of the stable bent rod 340 is disposed at one end of the connecting rod 330, and the other end of the stable bent rod 340 is fixed to the other end of the connecting rod 330. The arrangement of the stable bent rod 340 will further strengthen the structural strength of the connecting rod 330, and avoid the situation that the connecting rod 330 breaks when the stable telescopic rod 112 is stressed.

[0049] Obviously, the above-mentioned embodiments of the present application are merely examples for clearly explaining the present application, rather than limiting the implementation manners of the present application. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A fresh - food tomato pest - prevention device, characterized in that, Comprising: An adaptive wind-resistant frame and a high-elastic net cover, the high-elastic net cover is sleeved on the adaptive wind-resistant frame, and the adaptive wind-resistant frame includes a central rod group, a plurality of side rod groups and a plurality of wind-receiving telescopic rod groups; The central rod group includes a central fixed rod, a telescopic rod and a spring. The upper end of the central fixed rod is provided with a first telescopic hole, the lower end of the telescopic rod is slidably arranged in the first telescopic hole, and the spring is arranged in the first telescopic hole and is located at the lower end of the telescopic rod; A plurality of the side rod groups are arranged circumferentially and equidistantly around the central rod group; A plurality of the wind-receiving telescopic rod groups are hinged between the upper ends of the side rod groups and the upper ends of the plurality of central rod groups.

2. The fresh food tomato insect prevention device according to claim 1, wherein A first fixing plate is arranged at the lower end of the central fixed rod, and at least one first fixing hole is opened on the first fixing plate.

3. The fresh tomato pest control device according to claim 1, characterized in that, A second fixing plate is arranged at the lower end of the side rod group, and at least one second fixing hole is opened on the second fixing plate.

4. The fresh food tomato insect prevention device according to claim 1, characterized in that, A plurality of branches are arranged perpendicular to the telescopic rod in the circumferential direction at the upper end of the telescopic rod.

5. The fresh tomato pest control device according to claim 4, wherein, The wind-receiving telescopic rod group includes a first telescopic part and a second telescopic part. One end of the first telescopic part is telescopically matched with one end of the second telescopic part. The other end of the first telescopic part is hinged to the branch, and the other end of the second telescopic part is hinged to the upper end of the side rod group.

6. The fresh food tomato pest control device according to claim 1, characterized in that, The high-elastic net cover includes a side net and a top net that are butt-jointed with each other. The side net surrounds the outside of a plurality of the side rod groups in the circumferential direction, and the top net covers the upper sides of the central fixed rod and a plurality of the wind-receiving telescopic rod groups.

7. The fresh food tomato insect prevention device according to claim 6, characterized in that, A fixing area is arranged at the center of the top net, and the fixing area is fixedly connected to the upper end of the central fixed rod.

8. The fresh food tomato pest control device according to claim 1, characterized in that, It further includes an auxiliary component. The auxiliary component includes a guiding collar, a clamping ring and a connecting rod. The guiding collar is sleeved on the telescopic rod. The clamping ring is fixed to the central fixed rod and is concentric with the guiding collar. One end of the connecting rod is fixed to the guiding collar and the other end is fixed to the clamping ring.

9. The fresh food tomato pest control device according to claim 8, characterized in that, The auxiliary component further includes a plurality of stabilizing bent rods, and both ends of any one of the stabilizing bent rods are fixedly connected to both ends of the connecting rod.

Images