Cowpea insect-proof netting greenhouse

Abstract

This utility model relates to the field of greenhouse technology and discloses a cowpea insect-proof net greenhouse, including a tube. Multiple steel strands are fixedly connected to the top of the outer wall of the tube. A door post is fixedly connected to the front side of the outer wall of the tube. A door base beam is rotatably connected to the middle of the inner wall of the door post. A door leaf is fixedly connected to the middle of the inner wall of the door base beam. Clips and spring clips are fixedly connected to the left and right sides of the outer wall of the door base beam. A door guide rail is provided at the top of the outer wall of the door base beam. A protective net is fixedly connected around the outer walls of the tube and the steel strands. A door crossbeam is fixedly connected to the rear side of the outer wall of the tube. In this utility model, the tube stabilizes the overall greenhouse structure, and the steel strands are fixed to the tube and the surrounding protective net. The construction technology requirements are not high, and farmers can disassemble and store materials themselves. The maintenance and replacement of easily damaged parts are considered. The materials are recyclable, making it environmentally friendly and sustainable.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to a cowpea insect-proof net greenhouse. Background Technology

[0002] Cowpeas, also known as cowpeas, are annual dicotyledonous vines belonging to the genus Vigna in the legume family. The process of cultivating cowpea seeds into harvestable cowpea products requires selecting a flat, well-drained, fertile, and loose plot of land. Before planting, the land needs to be deeply plowed and harrowed, with sufficient base fertilizer and an appropriate amount of compound fertilizer applied to provide the various nutrients required for cowpea growth and create favorable soil conditions for cowpea growth.

[0003] Cowpea insect-proof net greenhouses are protective facilities specifically designed for cowpea cultivation, constructed using insect-proof netting. Based on a greenhouse structure, the netting covers the sides and top, physically preventing pests from entering and creating a relatively safe environment for cowpea growth. This reduces pest and disease occurrence, lowers pesticide usage, and ultimately achieves high-quality, high-yield, and green cowpea production. However, existing cowpea insect-proof net greenhouses require various professional RTK positioning tools during construction and installation. These tools can introduce errors in positioning on complex terrains, and their adaptability to terrain undulations and installation precision is low. The installation process is cumbersome and time-consuming. After long-term use, the highly sophisticated structure requires professional maintenance, making it inconvenient for farmers and increasing the cost of repairing and replacing damaged parts. Furthermore, the equipment and materials are expensive, resulting in high costs and low environmental sustainability and recycling efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cowpea insect-proof net greenhouse, which aims to improve the problems of equipment positioning errors in complex construction terrain areas, low adaptability to terrain undulations and installation accuracy, inconvenience for farmers, and increased cost of repair and replacement of damaged parts in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a cowpea insect-proof net greenhouse, comprising an insert tube, multiple steel strands 1 fixedly connected to the top of the outer wall of the insert tube, a door post 1 fixedly connected to the front side of the outer wall of the insert tube, a door base beam rotatably connected to the middle of the inner wall of the door post 1, a door leaf fixedly connected to the middle of the inner wall of the door base beam, and slotted springs fixedly connected to the left and right sides of the outer wall of the door base beam, a door guide rail opened at the top of the outer wall of the door base beam, a protective net fixedly connected to the outer walls of the insert tube and the steel strands 1, a door crossbeam fixedly connected to the rear side of the outer wall of the insert tube, long zippers fixedly connected to the left and right sides of the outer wall of the door crossbeam, steel strands 2 fixedly connected to the outer walls of the steel strands 1, a wire rope clip 1 fixedly connected to the side adjacent to the inner wall of the steel strands 2 and the steel strands 1, a column fixedly connected to the bottom of the outer wall of the steel strands 1, and a fixing mechanism fixedly connected to the side adjacent to the outer wall of the insert tube, the fixing mechanism being used to fix the net greenhouse.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a fixing plate, which is fixedly connected to an adjacent side of the outer wall of the insertion tube. A ratchet is rotatably connected to the left side of the inner wall of the right fixing plate. A pawl is provided on one side of the outer wall of the ratchet. A connecting frame is slidably connected to the middle of the inner walls of the two fixing plates. A gear groove is opened in the middle of the inner wall of the connecting frame. The gear groove meshes with the ratchet. A handle is fixedly connected to one side of the outer wall of the ratchet.

[0008] As a further description of the above technical solution:

[0009] A traction rope is fixedly connected to the outer wall of the first steel strand, and a steel wire rope clip is fixedly connected to one side of the outer wall of the traction rope.

[0010] As a further description of the above technical solution:

[0011] Each of the multiple traction ropes has a turnbuckle fixedly connected to one end of its outer wall, and each turnbuckle has a ground anchor fixedly connected to its bottom outer wall.

[0012] As a further description of the above technical solution:

[0013] Each of the multiple traction ropes has a turnbuckle fixedly connected to one end of its outer wall, and each turnbuckle has a ground anchor fixedly connected to its bottom outer wall.

[0014] As a further description of the above technical solution:

[0015] A wear-resistant pad is fixedly connected to the middle of the inner wall of the fixing plate, and a limit hole is opened in the middle of the inner wall of the fixing plate.

[0016] As a further description of the above technical solution:

[0017] A spring is fixedly connected to one side of the outer wall of the throttle, and an adjustment handle is fixedly connected to the middle of the inner wall of the spring.

[0018] As a further description of the above technical solution:

[0019] Each of the outer walls of the insertion tube has a column top hole, and a plastic cap is fixedly connected to the middle of the inner wall of the column top hole.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the insert pipe stabilizes the overall structure of the greenhouse. A steel strand is fixed around the insert pipe and the surrounding protective netting. A door post is fixed to the front of the insert pipe. The slots and springs on the left and right sides of the outer wall of the door beam are used to fix auxiliary components. The top door guide rail cooperates with the door rollers. The uprights are fixed to the bottom of the steel strand and extend into the ground, dispersing tension, facilitating construction, and protecting farmland. Line positioning can be completed using a steel ruler and right-angle ruler. The flexibility of the steel strand provides strong adaptability to errors and terrain. There are no typhoons in winter, so the structural wind resistance requirements are low, resulting in low project costs and easy statistics. Construction technology requirements are not high, and farmers can disassemble and store materials themselves. Repair and replacement of easily damaged parts are considered. The materials are recyclable, making it environmentally friendly and sustainable.

[0022] 2. In this utility model, the operator rotates the handle, causing the ratchet to rotate circumferentially around the connection point of the right-side fixed plate. The teeth on the outer wall of the ratchet mesh with the gear groove on the inner wall of the connecting frame, precisely adjusting the position or transmitting power. The pawl is located on one side of the outer wall of the ratchet. When driving forward, it lifts without obstruction. The ratchet has a tendency to rotate in the opposite direction. Under its own weight or the action of the spring, it falls into the tooth groove to prevent reverse rotation, ensuring that the position of the connecting frame is fixed after adjustment. The two fixed plates are fixed to the adjacent sides of the outer wall of the insertion tube. The right-side fixed plate installs the ratchet and provides support, ensuring that the adjustment mechanism works accurately and stably. Attached Figure Description

[0023] Figure 1 This is a front view of the cowpea insect-proof netting greenhouse proposed in this utility model;

[0024] Figure 2 This is a three-dimensional view of the cowpea insect-proof net greenhouse proposed in this utility model;

[0025] Figure 3 The cowpea insect-proof netting greenhouse proposed in this utility model Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a rear view of the cowpea insect-proof netting greenhouse proposed in this utility model;

[0027] Figure 5 This is a breakdown diagram of the fixing mechanism of the cowpea insect-proof net greenhouse proposed in this utility model.

[0028] Legend:

[0029] 1. Insertion tube; 2. Fixing mechanism; 201. Fixing plate; 202. Ratchet; 203. Pawl; 204. Connecting frame; 205. Gear groove; 206. Turn handle; 3. Steel strand one; 4. Door post one; 5. Door ground beam; 6. Door leaf; 7. Protective net; 8. Card slot and spring; 9. Door guide rail; 10. Door crossbeam; 11. Long zipper; 12. Steel strand two; 13. Steel wire rope clip one; 14. Post; 15. Traction rope; 16. Steel wire rope clip two; 17. Plastic cap; 18. Turnbuckle; 19. Ground anchor; 20. Extension net; 21. Door post two; 22. Wear-resistant pad; 23. Limiting hole; 24. Spring; 25. Adjusting handle; 26. Post top hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a cowpea insect-proof greenhouse, comprising a tube 1, with multiple steel strands 3 fixedly connected to the top of the outer wall of the tube 1, a door post 4 fixedly connected to the front of the outer wall of the tube 1, a door base beam 5 rotatably connected to the middle of the inner wall of the door post 4, a door leaf 6 fixedly connected to the middle of the inner wall of the door base beam 5, and slotted springs 8 fixedly connected to the left and right sides of the outer wall of the door base beam 5. A door guide rail 9 is provided at the top of the outer wall of the door base beam 5, a protective net 7 is fixedly connected to the outer walls of the tube 1 and the steel strands 3, and a door leaf 6 is fixedly connected to the rear of the outer wall of the tube 1. A door beam 10 has long zippers 11 fixedly connected to the left and right sides of its outer wall. A steel strand 12 is fixedly connected to the outer wall of steel strand 13. A wire rope clip 13 is fixedly connected to the inner wall of steel strand 12 adjacent to the inner wall of steel strand 13. A column 14 is fixedly connected to the bottom of the outer wall of steel strand 13. A fixing mechanism 2 is fixedly connected to the outer wall of insertion tube 1. The fixing mechanism 2 is used to fix the net shed. A traction rope 15 is fixedly connected to the outer wall of steel strand 13. A wire rope clip 16 is fixedly connected to one side of the outer wall of traction rope 15.

[0032] Specifically, the insertion pipe 1 serves as the basic support for the greenhouse, stabilizing the structure. Steel strand 3 extends from the top of the insertion pipe, providing tensile support to ensure the greenhouse resists wind deformation. The protective netting 7 surrounds the insertion pipe 1 and the steel strand, forming a closed space to prevent pests and protect cowpea growth. Doorpost 4 and door beam 5 constitute the opening and closing mechanism of the door leaf 6. The locking groove and spring clip 8 secure the door curtain, improving sealing. The door guide rail 9 works with the rollers of the door leaf 6 to ensure smooth operation. The door crossbeam 10 and long zipper 11 are used for partial opening of the greenhouse. Steel strand 2 12 and steel strand 3 are connected by steel wire rope clip 13 to enhance structural stability. The uprights... 14. The insertion tube 1 penetrates deep into the ground, dispersing tension and stabilizing the greenhouse support. A fixing mechanism 2 is fixedly connected to one side of the outer wall of the insertion tube 1. The main function of the fixing mechanism 2 is to secure the greenhouse, ensuring its stability and safety. Traction ropes 15 are fixed around the outer wall of the steel strand 3. These traction ropes 15 are distributed around the outer wall of the steel strand 3 to provide balanced traction. A wire rope clip 16 is fixedly connected to one side of the outer wall of each traction rope 15. The function of the wire rope clip 16 is to ensure that the traction rope 15 is firmly fixed to the steel strand 3, preventing slippage or detachment during use.

[0033] Reference Figure 1 , Figure 2 and Figure 5 The fixing mechanism 2 includes a fixing plate 201, which is fixedly connected to the outer wall of the insertion tube 1 on the adjacent side. A ratchet 202 is rotatably connected to the inner wall of the right fixing plate 201 on the left side. A pawl 203 is provided on one side of the outer wall of the ratchet 202. A connecting frame 204 is slidably connected to the middle of the inner wall of the two fixing plates 201. A gear groove 205 is opened in the middle of the inner wall of the connecting frame 204. The gear groove 205 is meshed with the ratchet 202. A handle 206 is fixedly connected to one side of the outer wall of the ratchet 202. A turnbuckle 18 is fixedly connected to one end of the outer wall of multiple traction ropes 15. A ground anchor 19 is fixedly connected to the bottom of the outer wall of the turnbuckle 18. An extension net 20 is fixedly connected to the bottom of the outer wall of the door beam 10. Doorposts 21 are fixedly connected to the four sides of the outer wall of the extension net 20.

[0034] Specifically, the throttle 206 is fixed to the outside of the ratchet 202. Manually turning the throttle 206 causes the ratchet 202 to rotate around the rotation point of the fixed plate 201, thus rotating the mechanical component. The teeth of the ratchet 202 mesh with the gear groove 205 inside the connecting frame 204, converting the circular motion into linear motion. The connecting frame 204 slides along the inner wall of the fixed plate 201, achieving position adjustment and power transmission. The pawl 203 provides one-way locking to prevent reverse rotation and maintain the stability of the mechanism. The right fixed plate 201 provides rotational support, and the two fixed plates 201 are connected by a guide. Frame 204 ensures the accuracy and connectivity of the adjustment mechanism. One end of each of the multiple traction ropes 15 is connected to a turnbuckle 18, and the bottom of these turnbuckles 18 is fixed with a ground anchor 19, ensuring the stability, safety, and ease of adjustment of the traction ropes 15. An extension net 20 is fixed to the bottom of the door beam 10, and doorposts 21 are fixedly connected to the outer perimeter of the extension net 20. This not only enhances the stability of the door beam 10 but also, through the combined use of the extension net 20 and doorposts 21, further improves the overall structural stability and safety.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A wear-resistant pad 22 is fixedly connected to the middle of the inner wall of the fixing plate 201. A limit hole 23 is opened in the middle of the inner wall of the fixing plate 201. A spring 24 is fixedly connected to one side of the outer wall of the throttle 206. An adjustment handle 25 is fixedly connected to the middle of the inner wall of the spring 24. A column top hole 26 is opened at the top of the outer wall of the insertion tube 1. A plastic cap 17 is fixedly connected to the middle of the inner wall of the column top hole 26.

[0036] Specifically, the wear-resistant pad 22 in the middle of the inner wall of the fixing plate 201 reduces friction between the connecting frame 204 and the fixing plate 201 during the sliding process, extending the service life of the components. The limiting hole 23 can cooperate with specific components to limit the movement range of related components of the connecting frame 204, ensuring the accuracy of the device operation. The spring 24 on one side of the outer wall of the handle 206 and the connected adjustment handle 25 provide a certain rebound force when the operator turns the handle 206 to adjust the ratchet 202 and other components. The adjustment handle 25 facilitates the operator's force application, improving the convenience and feel of adjustment. The column top hole 26 at the top of the outer wall of the insertion tube 1 is used for connection with other structures, enhancing the stability of the connection between the insertion tube 1 and related components. The plastic cap 17 in the middle of the inner wall of the column top hole 26 plays a buffering role to protect the column top hole 26, maintaining the stability and integrity of the entire greenhouse structure.

[0037] Working Principle: The net-frame greenhouse construction scheme adopts a flat-roof net-frame structure with a span of 8m, a bay width of 8m, and a height of 2.6m. The structure is fully prefabricated, allowing for easy disassembly and transportation. The insert pipe 1 serves as the foundation support component of the entire greenhouse, inserted into the ground to stabilize the structure. Since wind load is not considered, the columns 14 also use an insert pipe 1 structure, inserted 0.9m into the ground. The top of the columns uses hot-dip galvanized steel strands with a diameter of 4mm (Grade I) arranged longitudinally, transversely, and diagonally to support the top insect-proof netting. Multiple steel strands 3 extend and are fixed from the top of the outer wall of the insert pipe 1 outwards, providing outward tensile support to ensure the overall structure does not easily deform or collapse when facing wind forces. The protective netting 7 is fixed around the outer walls of the insert pipe 1 and the steel strands 3, forming a closed space. Its fine mesh on the outer wall prevents pests from entering the greenhouse, providing a suitable environment for cowpea growth. A relatively safe environment prevents pests from eating the cowpea plants and spreading diseases, thus achieving pest control. Door post 4 is fixed to the front of the outer wall of the insertion tube 1, providing a rotation support point for the door base beam 5. The door base beam 5 can rotate around the connection point with door post 4, thereby realizing the opening and closing of the door leaf 6. When it is necessary to enter or exit the greenhouse, the door leaf 6 is opened and closed by rotating the door base beam 5. The slot and spring 8 are fixed on the left and right sides of the outer wall of the door base beam 5 to fix the door curtain or other auxiliary components, further enhancing the sealing and functionality of the door body. The door guide rail 9 is opened at the top of the outer wall of the door base beam 5 to cooperate with the rollers or sliders on the door leaf 6, so that the door leaf 6 can slide smoothly along a specific trajectory during opening and closing, improving the smoothness of door operation. The top and surrounding facades are covered with a 40-80 mesh protective net 7. The width of the surrounding protective net 7 is 3m, and the width of the roof protective net 7 is 4m.During construction, the protective netting 7 should be sewn together as a whole according to the area, and installed as a whole on the facade and roof. It should be tensioned and straightened, and the seam edges should be secured with plastic cable ties at the junction with the steel strands. The door beam 10 is fixed to the rear side of the outer wall of the insertion pipe 1, and together with the door post 4, it reinforces and supports the front and rear sides of the greenhouse. It also provides a fixing point for the long zipper 11, which is used to connect the two sides of the protective netting 7. When it is necessary to open a part of the greenhouse for agricultural operations, it can be done by pulling open the long zipper 11. The steel strand 2 12 is fixedly connected to the steel strand 1 3 by the wire rope clip 13, which further enhances the stability and strength of the entire support structure, ensuring that the greenhouse remains firm under various weather conditions. The column 14 is fixed to the bottom of the outer wall of the steel strand 1 3, extending a certain depth into the ground to support the steel strand 1 3. The bottom of strand 3 provides additional support points, dispersing the tension borne by the steel strand 3 and making the entire greenhouse support system more stable. Insect-proof structures are buried in the soil around the perimeter, with pre-reserved access openings. The uprights 14 are inserted directly into the soil without foundations, facilitating construction and maximizing farmland protection. Construction does not require specialized positioning tools like RTK; a steel ruler and right-angle ruler are sufficient for marking and positioning. The steel strands are flexible, offering greater tolerance for positioning errors, terrain undulations, and installation precision. Winters are typhoon-free, eliminating the need to consider wind resistance, resulting in low project costs. Standard structural units and a detailed materials list facilitate statistical analysis. The construction technology threshold is low; farmers can disassemble, assemble, and store building materials themselves during seasonal changes. The design incorporates considerations for the maintenance and replacement of easily damaged parts based on farmers' usage habits. A high percentage of recyclable materials contribute to environmental sustainability.

[0038] The throttle 206 is fixed to one side of the outer wall of the ratchet 202. When the operator manually turns the throttle 206, the rotation of the throttle 206 will drive the ratchet 202 to rotate around its rotation connection point with the right-side fixed plate 201. The rotational movement of the mechanical parts is achieved by manual drive. The toothed structure on the outer wall of the ratchet 202 meshes with the gear groove 205 opened in the middle of the inner wall of the connecting frame 204. When the ratchet 202 rotates under the drive of the throttle 206, its teeth interact with the teeth of the gear groove 205, converting the circular motion of the ratchet 202 into the linear motion of the connecting frame 204. Because the gear groove 205 limits the direction of movement of the connecting frame 204, the connecting frame 204 will slide along a specific straight trajectory in the middle of the inner walls of the two fixed plates 201 to achieve precise position adjustment and power transmission. The pawl 203 is set on one side of the outer wall of the ratchet 202, and its function is to realize the one-way locking function. When the ratchet 202 is turned by the throttle 206, the pawl 203 will lock the ratchet 202. When 206 rotates in the forward drive, pawl 203 will lift up with the rotation of ratchet 202, without hindering the rotation of ratchet 202. However, when ratchet 202 tends to rotate in the reverse direction, pawl 203 will fall into the tooth groove of ratchet 202, preventing ratchet 202 from rotating in the reverse direction. This ensures that after the connecting frame 204 is driven forward by ratchet 202, it will not automatically retreat due to the reverse action of external force, and will maintain the currently adjusted position, providing a stable support structure for the entire mechanism. The right fixed plate 201 is used to install ratchet 202 and provide it with a rotation support point. The two fixed plates 201 together guide the connecting frame 204. The connecting frame 204 slides in the middle of the inner wall of the two fixed plates 201. The inner wall surface of the fixed plate 201 is equivalent to a guide rail, which restricts the movement direction of the connecting frame 204, so that it can only slide along the predetermined straight line direction, ensuring the accuracy and connectivity of the entire adjustment mechanism.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A greenhouse for cowpea with insect-proof net, comprising a pipe (1), characterized in that: Multiple steel strands (3) are fixedly connected to the top of the outer wall of the insertion tube (1). A doorpost (4) is fixedly connected to the front side of the outer wall of the insertion tube (1). A door base beam (5) is rotatably connected to the middle of the inner wall of the doorpost (4). A door leaf (6) is fixedly connected to the middle of the inner wall of the door base beam (5). A slotted spring (8) is fixedly connected to both the left and right sides of the outer wall of the door base beam (5). A door guide rail (9) is provided at the top of the outer wall of the door base beam (5). A protective net (7) is fixedly connected to the outer walls of the insertion tube (1) and the steel strands (3). (1) A door beam (10) is fixedly connected to the rear side of the outer wall. Long zippers (11) are fixedly connected to the left and right sides of the outer wall of the door beam (10). Steel strand one (3) is fixedly connected to the outer wall of the steel strand one (3). Steel strand two (12) is fixedly connected to the inner wall of the steel strand two (12) and the inner wall of the steel strand one (3). A steel wire rope clip one (13) is fixedly connected to the inner wall of the steel strand two (12). A column (14) is fixedly connected to the bottom of the outer wall of the steel strand one (3). A fixing mechanism (2) is fixedly connected to the outer wall of the insertion tube (1). The fixing mechanism (2) is used to fix the net shed.

2. The screen house for cowpea according to claim 1, characterized in that: The fixing mechanism (2) includes a fixing plate (201), which is fixedly connected to the adjacent side of the outer wall of the insertion tube (1). A ratchet (202) is rotatably connected to the left side of the inner wall of the right fixing plate (201). A pawl (203) is provided on one side of the outer wall of the ratchet (202). A connecting frame (204) is slidably connected to the middle of the inner walls of the two fixing plates (201). A gear groove (205) is opened in the middle of the inner wall of the connecting frame (204). The gear groove (205) is meshed with the ratchet (202). A throttle (206) is fixedly connected to one side of the outer wall of the ratchet (202).

3. The screen house for cowpea as claimed in claim 1 wherein: The outer wall of the first steel strand (3) is fixedly connected with a traction rope (15), and a steel wire rope clip (16) is fixedly connected to one side of the outer wall of the traction rope (15).

4. The screen house for cowpea according to claim 3, characterized in that: Each of the multiple traction ropes (15) has a turnbuckle (18) fixedly connected to one end of its outer wall, and each turnbuckle (18) has a ground anchor (19) fixedly connected to the bottom of its outer wall.

5. The mesh tunnel of cowpea protection according to claim 1, characterized in that: An extension net (20) is fixedly connected to the bottom of the outer wall of the door beam (10), and doorposts (21) are fixedly connected to the four sides of the outer wall of the extension net (20).

6. The mesh tunnel of cowpea protection according to claim 2, characterized in that: A wear-resistant pad (22) is fixedly connected to the middle of the inner wall of the fixing plate (201), and a limiting hole (23) is opened in the middle of the inner wall of the fixing plate (201).

7. The mesh tunnel of cowpea protection according to claim 2, characterized in that: A spring (24) is fixedly connected to one side of the outer wall of the throttle (206), and an adjustment handle (25) is fixedly connected to the middle of the inner wall of the spring (24).

8. The mesh tunnel of cowpea protection according to claim 1, characterized in that: The outer wall of the insertion tube (1) is provided with a column top hole (26), and a plastic cap (17) is fixedly connected to the middle of the inner wall of the column top hole (26).

Images