Anti-erosion three-dimensional protection net for farmland

Abstract

The present application relates to the technical field of farmland protection net, and particularly relates to a wind-erosion-resistant three-dimensional farmland protection net, which comprises a plurality of net bodies and a plurality of vertical stakes, the net bodies and the vertical stakes are arranged in an interlaced manner, two winding wheels are arranged in the vertical stake, one end of the net body is detachably provided with a pull rope, the other end of the net body is slidably penetrated through an adjacent vertical stake and fixed with the winding wheel on the inner side, the two winding wheels on the inner side of the same vertical stake are respectively connected with the net body and the pull rope, the other end of the pull rope is wound on the outer surface of the winding wheel, and the winding wheel connected with the pull rope and the vertical stake are elastically connected. The net body is buffered by the elastic rotation of the winding wheel, when the wind force drives the edge sleeve to cooperate with the edge shaft through the push-pull swing structure and then drives the one-way transmission force storage mechanism to be separated from the vertical stake, the torsion stored in the one-way transmission force storage mechanism drives the corresponding winding wheel to wind the net body, and the net body is retracted into the vertical stake to ensure that the vertical stake will not be tilted and collapsed due to the large wind force.

Description

Technical Field

[0001] This invention relates to the technical field of farmland protective netting, and in particular to a three-dimensional farmland protective netting resistant to wind erosion. Background Technology

[0002] Farmland protective netting is a commonly used tool in agricultural production. Its main purpose is to protect plants in farmland from damage or trampling by animals. In the cultivation of relatively expensive crops, protective netting is an indispensable protective device, providing farmland with security guarantees such as protection, theft prevention, and bird deterrence.

[0003] Chinese patent CN219118919U discloses a farmland protective net that is easy to disassemble and install. It includes a first mounting post with a limit block fixedly welded to its bottom. First fixing hooks are fixedly installed on both the upper and lower sides of the left side wall of the first mounting post. A first winding drum is vertically rotatably installed between the upper and lower side walls of the inner cavity of the first mounting post. A first helical gear is fixedly sleeved on the upper end of the shaft of the first winding drum. A first protective net is wound around the surface of the first winding drum. A first winding drum and a second winding drum are provided, and the two are synchronously connected and rotated through the first and second helical gears, allowing the rotation to proceed smoothly. When the adjustment knob is turned, the first and second protective nets can be expanded or rolled up simultaneously, eliminating the tedious process of disassembling and installing the two parts of the protective net separately, making disassembly, storage, installation and use more convenient and efficient. The above-mentioned related technologies have the following defects: When the protective net is used to protect farmland, it is supported by posts. When the protective net is blown by the wind, it will be pulled by the wind, and the protective net will shake against the posts supporting the protective net. After the protective net is blown by the wind many times, it will be blown by strong winds again, and the posts supporting the protective net are prone to tilting and collapsing. When the posts collapse, they can easily damage crops. Therefore, a wind-erosion resistant three-dimensional protective net for farmland is proposed. Summary of the Invention

[0004] To reduce the risk of wind-induced tilting and collapse of protective netting, this invention provides a wind-erosion resistant three-dimensional protective netting for farmland.

[0005] The present invention provides a three-dimensional protective net for farmland against wind erosion, which adopts the following technical solution: it includes multiple net bodies and multiple posts, the net bodies and posts are arranged in an alternating manner, two winding wheels are provided inside the posts, one end of the net body is detachably installed with a pull rope, the other end of the net body slides through the adjacent post and is fixed to the inner winding wheel, the two winding wheels inside the same post are respectively connected to the net body and the pull rope, and the other end of the pull rope is wound around the outer surface of the winding wheel.

[0006] The winding wheel connected to the pull rope and the upright pile are elastically rotatably connected. The winding wheel connected to the pull rope is fitted with a one-way transmission energy storage mechanism. The one-way transmission energy storage mechanism is elastically connected to the upright pile. The one-way transmission energy storage mechanism is slidably sleeved on the lower end of another winding wheel. The lower end of the winding wheel connected to the net body is coaxially fixed with a prism shaft. The lower end of the prism shaft is coaxially provided with a prism sleeve, which is connected to the one-way transmission energy storage mechanism.

[0007] The pile has a lifting structure installed inside that pulls the prism sleeve upward. The upper end of the pile is rotatably connected to a swing structure that can be rotated by wind. A hanging rope is fixed under the swing structure. The lower end of the hanging rope slides through the upper surface of the pile and connects to the lifting structure. The lifting structure drives the prism sleeve to cooperate with the prism shaft, which in turn drives the one-way transmission energy storage mechanism to disengage from the pile.

[0008] Optionally, the unidirectional transmission energy storage mechanism includes gear A and gear B, gear A meshes with gear B, and the winding wheel connected to the pull rope is coaxially arranged with gear A. Gear A and the coaxially arranged winding wheel are connected in a unidirectional transmission through a ratchet and groove structure.

[0009] The winding wheel and gear B connected to the net body are slidably connected on the same axis. The bottom surface of gear B is elastically rotatably connected to the pile. A detachable one-way rotating structure is installed on the bottom surface of gear B, and the one-way rotating structure is connected to the pile.

[0010] The upper surface of gear B is fixed coaxially with the prism sleeve.

[0011] Optionally, the lifting structure includes a linkage frame and a lifting ring frame. The linkage frame is located on the inner ring side of the lifting ring frame. The linkage frame is rotatably sleeved on the outer surface of the prism sleeve. The bottom surface of the linkage frame is elastically connected to the upright pile, which can move up and down.

[0012] The upper surface of the lifting ring frame is fixed with a rib, which is elastically connected to the upright pile and can move up and down. The upper end of the rib is fixed to the lower end of the lifting rope.

[0013] There is a gap between the inner bottom wall of the inner ring of the lifting ring frame and the bottom surface of the linkage frame.

[0014] Optionally, the swing structure includes a top frame and a swing rod, the middle part of the swing rod is spherical, the upper end of the top frame is rotatably connected to the spherical part of the swing rod, and the mating part of the top frame and the swing rod is a matching annular spherical frame structure.

[0015] The upper end of the swing arm is fixed with a wind-receiving plate, and the lower end of the swing arm is fixed with the upper end of the suspension rope.

[0016] Optionally, a straight plate is provided on the side of the lifting ring frame away from the winding wheel. The straight plate is elastically connected to the upright pile. The upper surface of the contact part between the straight plate and the lifting ring frame is inclined. The inclined part of the straight plate is located on the lower side of the other end of the inclined part of the straight plate near the lifting ring frame.

[0017] Optionally, a friction plate is vertically fixed on the upper surface of the straight plate, and the friction plate and the side of the linkage frame that are close to each other are both uneven.

[0018] Optionally, the unidirectional rotation structure includes an annular cylinder and a sleeve. The sleeve is rotatably fitted onto the outer surface of the annular cylinder, the upper end of the annular cylinder is fixed to the bottom surface of gear B, the annular cylinder is rotatably inserted into the inner bottom wall of the pile, and the sleeve is fixedly inserted into the inner bottom wall of the pile.

[0019] Optionally, the outer ring surface of the sleeve is provided with multiple slots, and the inner ring surface of the sleeve is elastically connected with corner blocks. The corner blocks are slidably inserted into one of the slots, and the corner blocks are right-angled triangles.

[0020] Optionally, the pile is provided with grooves on both the left and right sides, and the rope and the net are respectively passed through the corresponding grooves.

[0021] In summary, the present invention has the following beneficial technical effects:

[0022] This invention, by setting up components such as a pull rope, a net body, a prism shaft, and a prism sleeve, allows the net body to swing when blown by the wind. The pull rope is pulled out from the surface of the corresponding winding wheel, and the winding wheel cushions the impact of the wind on the net body through elastic rotation. At the same time, as the pull rope drives the corresponding winding wheel to rotate, a one-way transmission energy storage mechanism stores torque. When the wind force pushes the swinging structure to engage the prism sleeve and the prism shaft, and then causes the one-way transmission energy storage mechanism to detach from the pile, the torque stored in the one-way transmission energy storage mechanism drives the corresponding winding wheel to wind the net body, pulling the net body into the pile. The net body will no longer be blown by the wind, ensuring that the pile will not tilt or collapse due to strong winds.

[0023] This invention, by setting up components such as a hanging ring frame, a linkage frame, and a prism rod, allows the lower end of the swing rod to swing and pull the hanging rope when the wind-receiving plate is blown by the wind, thus moving the hanging ring frame upward. When the wind force is strong enough to push the wind-receiving plate to rotate at a sufficient angle, pulling the hanging rope and the prism rod upward a sufficient distance, the inner bottom wall of the inner ring of the hanging ring frame pushes the linkage frame upward, causing the prism sleeve to move upward. This ensures that the prism sleeve and prism shaft will only engage after the wind-receiving plate has rotated at a sufficient angle, effectively preventing the mesh plate from being pulled into the pile when the wind force is weak.

[0024] This invention, by setting up components such as straight plates and friction plates, has an elastic connection between the straight plates and the uprights that tends to push the friction plates closer to the linkage frame. After the linkage frame moves upward and separates from the straight plates, the straight plates push the friction plates to squeeze the linkage frame, applying resistance to the movement of the linkage frame. After the lifting ring frame pushes the linkage frame upward, it slows down the downward reset speed of the lifting ring frame. When the wind force is unstable and the wind-affected plate swings, the rib sleeve will not repeatedly disengage and engage with the rib shaft, ensuring that the net body can remain stably inside the uprights when the wind force is unstable in windy weather. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the pile in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection between the top frame and the swing arm in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the connection between gear A and gear B in an embodiment of the present invention;

[0029] Figure 5 This is a top view schematic diagram of some structures in an embodiment of the present invention;

[0030] Figure 6 This is a structural schematic diagram showing the positional distribution of the lifting ring frame and the linkage frame in an embodiment of the present invention;

[0031] Figure 7 This is a side view schematic diagram of some structures in an embodiment of the present invention;

[0032] Figure 8 This is a front view schematic diagram of some structures in an embodiment of the present invention.

[0033] Reference numerals: 1. Net body; 2. Post; 3. Winding wheel; 4. Pull rope; 5. One-way transmission power storage mechanism; 51. Gear A; 52. Gear B; 53. Ratchet and groove structure; 54. One-way rotation structure; 541. Ring cylinder; 542. Sleeve; 543. Slot; 544. Corner block; 6. Lifting structure; 61. Linkage frame; 62. Hanging ring frame; 63. Rib; 64. Straight plate; 65. Friction plate; 7. Swinging structure; 71. Top frame; 72. Swing rod; 73. Wind receiving plate; 8. Rib shaft; 9. Rib sleeve; 10. Hanging rope; 11. Post groove. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0035] This invention discloses a three-dimensional protective net for farmland to resist wind erosion. For example... Figures 1-8As shown, the system includes multiple net bodies 1 and multiple uprights 2, which are arranged in an alternating manner. Each upright has two winding wheels 3 inside. One end of the net body 1 is detachably equipped with a pull rope 4. The ends of the pull rope 4 and the net body 1 that are close to each other are each equipped with a flat plate. The two flat plates are detachably connected by bolts. The other end of the net body 1 slides through the adjacent upright and is fixed to the inner winding wheel 3. The two winding wheels 3 inside the same upright are respectively connected to the net body 1 and the pull rope 4. The other end of the pull rope 4 is wound around the outer surface of the winding wheel 3. The uprights 2 have vertical grooves 11 on both the left and right sides. The pull rope 4 and the net body 1 pass through the corresponding vertical grooves 11 and slide within the vertical grooves 11.

[0036] The winding wheel 3 and the upright post 2 are elastically rotatably connected to the pull rope 4. The elastic connection between the winding wheel 3 and the upright post 2 has a tendency to wind the pull rope 4. The winding wheel 3 and the upright post 2 are elastically connected by a torsion spring. The winding wheel 3 connected to the pull rope 4 is fitted with a one-way transmission energy storage mechanism 5. The one-way transmission energy storage mechanism 5 is elastically connected to the upright post 2. The one-way transmission energy storage mechanism 5 is slidably fitted on the lower end of another winding wheel 3. When the net body 1 is blown by the wind and the pull rope 4 drives the winding wheel 3 to rotate elastically, the wind force on the net body 1 is buffered. When the pull rope 4 drives the corresponding winding wheel 3 to rotate, the one-way transmission energy storage mechanism 5 performs transmission energy storage.

[0037] The one-way transmission energy storage mechanism 5 includes gear A51 and gear B52, which mesh with each other. The winding wheel 3 connected to the pull rope 4 is coaxially arranged with gear A51. Gear A51 and the coaxially arranged winding wheel 3 are connected by a ratchet and groove structure 53 for one-way transmission. The ratchet of the ratchet and groove structure 53 is opened on the inner ring surface of gear A51. The unidirectional rotation elasticity of the ratchet structure 53 is installed on the outer surface of the winding wheel 3. When the pull rope 4 pulls the winding wheel 3 to rotate, it drives the gear A51 to rotate through the ratchet and groove structure 53. When the winding wheel 3 rotates in the opposite direction, the ratchet and groove structure 53 of the winding wheel 3 rotates out of position, so that the winding wheel 3 will not drive the gear A51 to rotate when it rotates in the opposite direction.

[0038] The lower end of the winding wheel 3 connected to the net body 1 is coaxially fixed with a prism shaft 8. The lower end of the prism shaft 8 is coaxially provided with a prism sleeve 9. The prism sleeve 9 is connected to the one-way transmission energy storage mechanism 5. The upper surface of the gear B52 is coaxially fixed with the prism sleeve 9. When the gear B52 moves upward and drives the prism sleeve 9 to cooperate with the prism shaft 8, the gear B52 can drive the connected winding wheel 3 to rotate synchronously through the prism shaft 8.

[0039] The winding wheel 3 and gear B52 connected to the net body 1 are slidably connected on the same axis. The bottom surface of gear B52 is elastically rotatably connected to the upright post 2. A detachable one-way rotating structure 54 is installed on the bottom surface of gear B52. The one-way rotating structure 54 is connected to the upright post 2. The one-way rotating structure 54 ensures that only when the rope 4 pulls out the direction in which the winding wheel 3 drives the gear A51 to rotate can the one-way rotating gear B52 be driven to rotate. The gear B52 stores power and rotates. When the gear B52 drives the one-way rotating structure 54 to disengage upward, the prism sleeve 9 first cooperates with the prism shaft 8, so that the power-stored gear B52 can drive the winding wheel 3 to wind the net body 1 through the prism sleeve 9 and the cooperating prism shaft 8.

[0040] The unidirectional rotating structure 54 includes an annular cylinder 541 and a sleeve 542. The sleeve 542 is rotatably sleeved on the outer surface of the annular cylinder 541. The upper end of the annular cylinder 541 is fixed to the bottom surface of the gear B52. The annular cylinder 541 is rotatably inserted into the inner bottom wall of the pile 2, and the sleeve 542 is fixedly inserted into the inner bottom wall of the pile 2.

[0041] The outer ring surface of the ring cylinder 541 has multiple slots 543. The inner ring surface of the sleeve 542 is elastically connected to a corner block 544. The corner block 544 is slidably inserted into one of the slots 543. The elastic connection between the corner block 544 and the sleeve 542 has a tendency to push the corner block 544 to mesh with the slot 543. The corner block 544 is a right-angled triangle. The direction in which the winding wheel 3 is pulled by the rope 4 can drive the gear A51 to rotate, which in turn drives the unidirectional driving gear B52 to rotate. At this time, the right-angled inclined surface of the corner block 544 is constantly displaced from the slot 543. The right-angled side of the corner block 544 ensures that the gear B52 will not rotate in the opposite direction. Before the gear B52 moves upward and drives the slot 543 to move to the upper side of the corner block 544, the prism sleeve 9 first engages with the prism shaft 8. Then, after the slot 543 moves to the upper side of the corner block 544, the elastically stored gear B52 drives the winding wheel 3 to wind the net body 1 through the prism sleeve 9 and the prism shaft 8, and collects the net body 1 into the post 2.

[0042] The pile 2 is equipped with a lifting structure 6 that pulls the prism sleeve 9 upward. The upper end of the pile 2 is rotatably connected to a swing structure 7 that can be rotated by wind. A hanging rope 10 is fixed under the swing structure 7.

[0043] The swing structure 7 includes a top frame 71 and a swing rod 72. The middle part of the swing rod 72 is spherical. The upper end of the top frame 71 is rotatably connected to the spherical part of the swing rod 72. The mating part of the top frame 71 and the swing rod 72 is a matching annular spherical frame structure, so that the swing rod 72 can rotate relative to the top frame 71 within a range of multiple angles.

[0044] A wind-receiving plate 73 is fixed to the upper end of the swing arm 72, and the lower end of the swing arm 72 is fixed to the upper end of the suspension rope 10. The wind-receiving plate 73 swings when it is blown by the wind.

[0045] After the lower end of the hoisting rope 10 slides through the upper surface of the pile 2, it connects with the lifting structure 6. The lifting structure 6 drives the prism sleeve 9 to cooperate with the prism shaft 8, which in turn drives the one-way transmission energy storage mechanism 5 to disengage from the pile 2.

[0046] The lifting structure 6 includes a linkage frame 61 and a lifting ring frame 62. The linkage frame 61 is located on the inner ring side of the lifting ring frame 62. There is a gap between the bottom wall of the inner ring surface of the lifting ring frame 62 and the bottom surface of the linkage frame 61, so that the lifting ring frame 62 will not push the linkage frame 61 when it first moves upward. Only after the bottom wall of the lifting ring frame 62 contacts the linkage frame 61 and continues to move upward will it push the linkage frame 61 to move upward. The linkage frame 61 is rotatably sleeved on the outer surface of the rib sleeve 9. The bottom surface of the linkage frame 61 is elastically connected to the vertically movable post 2. The elastic connection between the linkage frame 61 and the post 2 has a downward tendency. A rib 63 is fixed on the upper surface of the lifting ring frame 62. 3 is elastically connected to the vertically movable pile 2. The upper end of the prism rod 63 is fixed to the lower end of the suspension rope 10. The elastic connection between the prism rod 63 and the vertical pile 2 has the tendency to pull the prism rod 63 downward to tighten the suspension rope 10. When the wind-receiving plate 73 is blown by the wind, it drives the lower end of the swing rod 72 to swing and pull the suspension rope 10 to move the lifting ring frame 62 upward. When the wind force is large enough to push the wind-receiving plate 73 to rotate at a sufficient angle and pull the suspension rope 10 and the prism rod 63 to move upward a sufficient distance, the inner bottom wall of the inner ring of the lifting ring frame 62 pushes the linkage frame 61 upward to drive the prism sleeve 9 to move upward, ensuring that the prism sleeve 9 and the prism shaft 8 will only cooperate after the wind-receiving plate 73 rotates at a sufficient angle.

[0047] A straight plate 64 is positioned on the side of the lifting ring frame 62 away from the winding wheel 3. The straight plate 64 is elastically connected to the upright post 2. This elastic connection tends to push the straight plate 64 closer to the linkage frame 61. The upper surface of the contact area between the straight plate 64 and the lifting ring frame 62 is inclined. The end of the inclined portion of the straight plate 64 closest to the lifting ring frame 62 is located below the other end of the inclined portion. A friction plate 65 is vertically fixed to the upper surface of the straight plate 64. After the linkage frame 61 moves upward and disengages from the straight plate 64, the straight plate 64 pushes the friction plate 65 to press against the linkage frame 61. The friction plate 65 and the linkage frame 61 interact with each other. The surface near the friction plate 65 is uneven, which creates resistance to the movement of the linkage frame 61 when the friction plate 65 contacts the linkage frame 61. After the lifting ring frame 62 pushes the linkage frame 61 upward, it slows down the downward reset speed of the lifting ring frame 62. When the wind is unstable and the wind-receiving plate 73 swings, the prism sleeve 9 will not reciprocate to disengage from and engage with the prism shaft 8, ensuring that the net body 1 can remain stably inside the upright pile 2 when the wind is unstable in strong winds. When the linkage frame 61 moves to the lowest point, the linkage frame 61 pushes the inclined part of the straight plate 64, causing the friction plate 65 to separate from the linkage frame 61, so that the linkage frame 61 can reset downward.

[0048] The elastic connections in this document are made using elastic components such as springs and elastic telescopic rods.

[0049] The working principle is as follows: The net body 1 is positioned between two adjacent upright posts 2, and the upright posts 2 are then installed on the ground to protect the farmland. When the wind blows, the swing structure 7 and the net body 1 swing under the wind force. The net body 1 pulls the rope 4 from the surface of the corresponding winding wheel 3. The winding wheel 3 cushions the net body 1 from the wind force through elastic rotation. At the same time, when the rope 4 drives the corresponding winding wheel 3 to rotate, the torque is stored through the one-way transmission power storage mechanism 5. When the wind force pushes the swing structure 7 to drive the prism sleeve 9 to cooperate with the prism shaft 8, When the one-way transmission power storage mechanism 5 is disengaged from the pile 2, the torque stored in the one-way transmission power storage mechanism 5 drives the corresponding winding wheel 3 to wind the net body 1, pulling the net body 1 into the pile 2. The net body 1 will no longer be blown by the wind, ensuring that the pile 2 will not tilt due to strong wind. After the wind stops, the rib sleeve 9 disengages from the rib shaft 8, and the winding wheel 3 connected to the pull rope 4 rewinds the pull rope 4 onto the surface under the elastic connection with the pile 2, pulling the net body 1 back between the two piles 2, so that the net body 1 can provide protection again.

[0050] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind-erosion resistant three-dimensional protective net for farmland, comprising multiple net bodies (1) and multiple posts (2), characterized in that: The net body (1) and the piles (2) are arranged in an alternating manner. The piles (2) are equipped with two winding wheels (3). One end of the net body (1) is detachably equipped with a pull rope (4). The other end of the net body (1) slides through the adjacent piles (2) and is fixed to the inner winding wheel (3). The two winding wheels (3) on the inner side of the same pile (2) are connected to the net body (1) and the pull rope (4) respectively. The other end of the pull rope (4) is wound around the outer surface of the winding wheel (3). The winding wheel (3) connected to the pull rope (4) and the upright pile (2) are elastically rotatably connected. The winding wheel (3) connected to the pull rope (4) is fitted with a one-way transmission energy storage mechanism (5). The one-way transmission energy storage mechanism (5) is elastically connected to the upright pile (2). The one-way transmission energy storage mechanism (5) is slidably fitted on the lower end of another winding wheel (3). The lower end of the winding wheel (3) connected to the net body (1) is coaxially fixed with a prism shaft (8). The lower end of the prism shaft (8) is coaxially provided with a prism sleeve (9). The prism sleeve (9) is connected to the one-way transmission energy storage mechanism (5). The pile (2) is equipped with a lifting structure (6) that pulls the prism sleeve (9) upward. The upper end of the pile (2) is rotatably connected to a swing structure (7) that can be rotated by wind. A hanging rope (10) is fixed under the swing structure (7). The lower end of the hanging rope (10) slides through the upper surface of the pile (2) and connects to the lifting structure (6). The lifting structure (6) drives the prism sleeve (9) to cooperate with the prism shaft (8) and then drives the one-way transmission energy storage mechanism (5) to disengage from the pile (2). The one-way transmission power storage mechanism (5) includes gear A (51) and gear B (52), gear A (51) meshes with gear B (52), and the winding wheel (3) connected to the pull rope (4) and gear A (51) are coaxially arranged. Gear A (51) and the coaxial winding wheel (3) are connected by a ratchet and groove structure (53) for one-way transmission. The winding wheel (3) connected to the net body (1) and the gear B (52) are slidably connected on the same axis. The bottom surface of the gear B (52) is elastically rotatably connected to the upright pile (2). The bottom surface of the gear B (52) is equipped with a detachable one-way rotating structure (54), which is connected to the upright pile (2). The upper surface of gear B (52) is fixed coaxially with the prism sleeve (9).

2. The wind-erosion resistant three-dimensional protective net for farmland according to claim 1, characterized in that: The lifting structure (6) includes a linkage frame (61) and a lifting ring frame (62). The linkage frame (61) is located on the inner ring side of the lifting ring frame (62). The linkage frame (61) is rotatably sleeved on the outer surface of the prism sleeve (9). The bottom surface of the linkage frame (61) is elastically connected to the vertical pile (2) and can move up and down. The upper surface of the lifting ring frame (62) is fixed with a rib (63), and the rib (63) is elastically connected to the vertical pile (2) and can move up and down. The upper end of the rib (63) is fixed to the lower end of the lifting rope (10). There is a gap between the inner bottom wall of the inner ring surface of the lifting ring frame (62) and the bottom surface of the linkage frame (61).

3. The wind-erosion resistant three-dimensional protective net for farmland according to claim 1, characterized in that: The swing structure (7) includes a top frame (71) and a swing rod (72). The middle part of the swing rod (72) is spherical. The upper end of the top frame (71) is rotatably connected to the spherical part of the swing rod (72). The mating part of the top frame (71) and the swing rod (72) is a matching annular spherical frame structure. The upper end of the swing arm (72) is fixed with a wind-receiving plate (73), and the lower end of the swing arm (72) is fixed with the upper end of the suspension rope (10).

4. The wind-erosion resistant three-dimensional protective net for farmland according to claim 2, characterized in that: A straight plate (64) is provided on the side of the lifting ring frame (62) away from the winding wheel (3). The straight plate (64) is elastically connected to the upright pile (2). The upper surface of the contact part between the straight plate (64) and the lifting ring frame (62) is inclined. The end of the inclined part of the straight plate (64) near the lifting ring frame (62) is located on the lower side of the other end of the inclined part of the straight plate (64).

5. The wind-erosion resistant three-dimensional protective net for farmland according to claim 4, characterized in that: A friction plate (65) is vertically fixed on the upper surface of the straight plate (64). The friction plate (65) and the linkage frame (61) are both uneven on the side close to each other.

6. The wind-erosion resistant three-dimensional protective net for farmland according to claim 1, characterized in that: The unidirectional rotating structure (54) includes an annular cylinder (541) and a sleeve (542). The sleeve (542) is rotatably sleeved on the outer surface of the annular cylinder (541). The upper end of the annular cylinder (541) is fixed to the bottom surface of the gear B (52). The annular cylinder (541) is rotatably inserted into the inner bottom wall of the pile (2). The sleeve (542) is fixedly inserted into the inner bottom wall of the pile (2).

7. The wind-erosion resistant three-dimensional protective net for farmland according to claim 6, characterized in that: The outer ring surface of the ring cylinder (541) is provided with multiple slots (543), and the inner ring surface of the sleeve (542) is elastically connected with a corner block (544). The corner block (544) is slidably inserted into one of the slots (543), and the corner block (544) is a right triangle.

8. The wind-erosion resistant three-dimensional protective net for farmland according to claim 7, characterized in that: The pile (2) has grooves (11) on both the left and right sides, and the rope (4) and the net (1) pass through the corresponding grooves (11).

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