Protective device for grassland pest control

Abstract

The invention relates to the technical field of protective devices, in particular to a protective device for grassland pest control, comprising: two groups of upper cylinders which are rotatably connected and can surround a circular structure to protect plants; a clamping assembly is arranged in a placement cavity formed in the upper cylinder, the clamping assembly comprises a clamping piece arranged in the upper cylinder, and a trigger piece and an encircling structure are arranged on the clamping piece; the device further comprises a driving assembly arranged on the upper cylinders, the driving assembly comprises driving parts slidably arranged on the upper cylinders, after the two upper cylinders surround a circular structure, the driving parts are driven to slide along the relative upper cylinders, the driving parts can drive the clamping parts to get close to the axes of the upper cylinders, and in the approaching process, the triggering parts make contact with plants firstly, and then the triggering parts make contact with the plants. Then, under the cooperation of the plant, the triggering piece can drive the surrounding structure to act, so that the plant is protected in a surrounding mode, then the climbing path of the mouse can be cut off, and the mouse is prevented from gnawing the fruit of the plant.

Description

Technical Field

[0001] The invention relates to the technical field of protective devices, in particular to a protective device for controlling grassland harmful organisms. Background Art

[0002] Grasslands play an important role in maintaining water and soil, preventing wind and sand, protecting biodiversity, and maintaining ecological balance. Grassland plants absorb carbon dioxide and release oxygen through photosynthesis, improving air quality.

[0003] At present, there are many kinds of fruit trees that can be planted on the grassland, including sea buckthorn, hawthorn, blueberry and rose hip, etc. These fruit trees not only play an important role in the ecosystem, but also have rich nutritional and medicinal value.

[0004] Hawthorn, also known as mountain ash, is a deciduous tree that is also distributed in the hinterland of the Ujumchin grassland. It has an elegant tree posture and lush flowers and leaves. At present, in the process of planting hawthorn, the fruit of hawthorn is easily eaten by mice. The existing prevention and control measures usually use mousetraps, rodenticides, animal traps, etc. to lure mice; but according to actual investigations, when placing mousetraps or animal traps, other non-harmful animals are easily captured and killed, and when the final harvest comes, the fruit still shows signs of being eaten by mice, which ultimately leads to a reduction in the planting yield. Summary of the invention

[0005] The object of the present invention is to provide a protective device for controlling grassland pests to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A protective device for controlling grassland pests, comprising: an upper cylinder 1, wherein the upper cylinder 1 is provided with two groups, and the two groups of upper cylinders are rotatably connected and can be surrounded to form a circular structure, thereby protecting plants; A clamping assembly is arranged in the placement cavity formed on the upper tube, and the clamping assembly includes a clamping member arranged in the upper tube, and a trigger member and an embracing structure are arranged on the clamping member; It also includes a driving component arranged on the upper cylinder, and the driving component includes a driving member slidably arranged on the upper cylinder. When the two groups of upper cylinders are surrounded into a circular structure, the driving member is driven to slide relative to the upper cylinder, and the driving member can drive the clamping member to approach the axis of the upper cylinder. During the approach process, the trigger member first contacts the plant, and then with the cooperation of the plant, the trigger member can drive the embracing structure to move, thereby embracing and protecting the plant.

[0007] The protective device for controlling grassland pests as described above: the clamping part includes a placing plate, on which a plug-in tube is fixedly arranged, and two groups of the plug-in tubes are symmetrically arranged along the length direction of the placing plate, and a first spring is fixedly and slidably arranged in each group of the plug-in tubes, one end of the first spring abuts against the placing plate, and the other end abuts against a plug-in rod slidably arranged in the plug-in tube, and a clamping block is fixedly arranged at one end of the two groups of plug-in rods away from the placing plate.

[0008] The protective device for controlling grassland pests as described above: the triggering member includes a wedge block slidably arranged in the clamping block, and triggering surfaces are formed on the left and right sides of the wedge block.

[0009] The protective device for controlling grassland pests as described above: the embracing structure includes an embracing member and an elastic member, the embracing member includes an embracing ring slidably arranged in the clamping block, the embracing rings are symmetrically arranged in two groups along the length direction of the storage plate, and a trigger plate is fixedly arranged on each group of the embracing rings.

[0010] The protective device for controlling grassland pests as described above: the elastic members are provided in two groups, each group of the elastic members includes a sliding rod fixedly arranged in the clamping block, a second spring is slidably arranged on the sliding rod, one end of the second spring abuts against the clamping block, and the other end abuts against a movable ring slidably arranged on the sliding rod.

[0011] The protective device for controlling grassland pests as described above: the driving member includes a lifting ring sleeved on the upper cylinder.

[0012] The protective device for controlling grassland pests as described above: the driving assembly also includes a rotating structure and a moving structure, the rotating structure includes a driving rod rotatably installed in the placement cavity, a spiral groove opened on the outer wall of the driving rod, and a lifting member fixedly connected to the lifting ring is also sleeved on the driving rod, when the lifting ring moves relative to the upper cylinder, the lifting member cooperates with the spiral groove to force the driving rod to rotate.

[0013] The protective device for controlling grassland pests as described above: the lifting member includes a sleeve ring sleeved on the driving rod, a protrusion is formed on the inner wall of the sleeve ring, and the protrusion is slidably arranged in the spiral groove.

[0014] The protective device for controlling grassland pests as described above: the movable structure includes a threaded rod rotatably mounted on the storage plate, the threaded rod is connected to the driving rod through a bevel gear set, and the threaded rod is provided with a threaded sleeve threadedly connected thereto, a connecting tube is coaxially arranged at one end of the threaded sleeve away from the threaded rod, and a fixing rod fixedly connected to the clamping block is slidably arranged in the connecting tube.

[0015] The protective device for controlling grassland pests as described above: the upper cylinder is also provided with an external protective structure, the external protective structure comprises a lower cylinder fixedly connected to the upper cylinder, and the lower cylinder is provided with a series of balls equidistantly installed along its circumferential direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting the upper tube, the trunk of the plant can be embraced by opening and closing the two sets of upper tubes, and when the upper tube is closed, the upper tube can be maintained in a closed state under the cooperation of the locking groove and the locking block. At this time, the ball disposed on the outer wall of the lower tube can cause the mouse to have no climbing foothold when climbing along the outer wall of the lower tube, so the mouse cannot climb from the outer wall of the upper tube to the trunk, and thus cannot touch the fruit; At the same time, the upper cylinder is also provided with a clamping assembly and a driving assembly. By driving the lifting ring to rise, the clamping assembly on the upper cylinder can be forced to move synchronously, and when the clamping block in the clamping assembly approaches the tree trunk, the wedge block arranged on the clamping block cooperates with the tree trunk, which can force the embracing ring retracted in the clamping block to extend outward, until the lifting ring rises to the end of the stroke, the embracing ring in the clamping block extends to the maximum distance, and then the clamping block and the embracing ring cooperate with each other to contact and embrace the tree trunk, thereby preventing mice from climbing up the tree trunk from the inner wall of the upper cylinder. Combined with the ball of the lower cylinder, the device can effectively cut off the path of mice climbing up along the tree trunk, prevent mice from gnawing on the fruits of the plants, thereby increasing the fruit yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the closed structure of the protective device for grassland pest control.

[0018] Figure 2 Schematic diagram of the unfolded structure of the protective device for grassland pest control.

[0019] Figure 3 This is a schematic diagram of the structure inside the upper cylinder of a protective device for grassland pest control.

[0020] Figure 4 The present invention is a schematic diagram of the structure of the cooperation between the lifting component and the clamping component in the protective device for controlling grassland pests.

[0021] Figure 5 The present invention is a schematic diagram of the structure of the connection between the clamping assembly and the driving assembly in the protective device for controlling grassland pests.

[0022] Figure 6 The present invention is a schematic diagram of the structure of the lifting component and the clamping component in the protective device for grassland pest control.

[0023] Figure 7The figure is a schematic diagram of the structure of the clamping parts in the protective device for controlling grassland pests.

[0024] Figure 8 The figure is a schematic diagram of the structure inside the clamping block in the protective device for controlling grassland pests.

[0025] Fig. 9 The figure is a schematic diagram of the structure of the embracing member in the protective device for controlling grassland pests.

[0026] Fig.10 The figure is a schematic diagram of the structure of elastic parts in a protective device for controlling grassland pests.

[0027] Fig.11 The figure is a schematic diagram of the structure of the triggering member in the protective device for controlling grassland pests.

[0028] In the figure: 1, upper cylinder; 101, through groove; 102, storage plate; 103, storage cavity; 2, lifting ring; 3, lower cylinder; 4, ball bearing; 5, latch; 6, clamping block; 601, slide groove; 7, holding ring; 701, abutment surface; 702, trigger plate; 8, wedge block; 801, trigger surface; 802, slider; 9, locking groove; 10, locking block; 11, bevel gear set; 12, drive rod; 1 201, spiral groove; 13, plug-in cylinder; 14, first spring; 15, plug-in rod; 16, threaded rod; 17, threaded sleeve; 18, fixed rod; 1801, snap-in block; 19, sleeve ring; 1901, protruding column; 20, connecting cylinder; 2001, snap-in groove; 21, sliding rod; 2101, groove; 22, moving ring; 2201, protrusion; 2202, extension plate; 23, second spring. DETAILED DESCRIPTION

[0029] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] See also Figure 1-11In an embodiment of the present invention, a protective device for controlling grassland pests includes: The upper tube 1 is provided with two groups, and the two groups of the upper tube 1 are rotatably connected and can be surrounded to form a circular structure, so as to protect the plants; For details, please refer to Figure 1 The two groups of upper tubes 1 are connected by a latch 5. At this time, the rotation axes of the two groups of upper tubes 1 are coaxial with the axis of the latch 5. By driving the two groups of upper tubes 1 to rotate in opposite directions, the two groups of upper tubes 1 can be formed as follows. Figure 1 , Figure 2 The closed or open state shown makes it easier for the subsequent upper tube 1 to embrace and protect the plant; In particular, see Figure 3 A locking block 10 is fixedly provided on the end surface of one of the above-mentioned groups of upper tubes 1 away from the latch 5, and the locking block 10 has a certain elasticity. Correspondingly, a locking groove 9 adapted to the locking block 10 is opened on the end surface of the other group of upper tubes 1 away from the latch 5. When the two groups of upper tubes 1 are driven to close, the locking block 10 and the locking groove 9 cooperate with each other, so that the two groups of upper tubes 1 can be connected and surrounded to form a complete circular structure, and in the absence of external force, the circular structure formed by the two groups of upper tubes 1 remains unchanged, so that the plants can be surrounded and play a protective role.

[0033] The upper cylinder 1 is also provided with an external protection structure, which includes a lower cylinder 3 fixedly connected to the upper cylinder 1, and a series of balls 4 are equidistantly installed on the lower cylinder 3 along its circumferential direction; For details, please refer to Figure 1 , Figure 2 , Figure 3 The outer diameter of the lower cylinder 3 is smaller than that of the upper cylinder 1, and a relatively narrow support leg is fixedly provided on the side of the lower cylinder 3 away from the upper cylinder 1. The support leg can make the lower cylinder 3 form a certain distance from the ground. At this time, mice and other pests can only climb onto the lower cylinder 3 through the support leg. Since the support leg is relatively narrow, it is difficult for mice to climb onto the lower cylinder 3. If a mouse climbs onto the upper tube 1, the densely arranged balls 4 on the outer wall of the lower tube 3 can block the mouse: when the mouse puts force on the lower tube 3, it contacts the balls 4, which roll, leaving the mouse without a foothold. At this time, the mouse will be unable to climb upwards, thereby preventing the mouse from contacting the tree trunk from the outside of the lower tube 3, and then preventing the mouse from gnawing on the fruits of the plant.

[0034] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8A clamping assembly is provided in the placement cavity 103 formed on the upper tube 1, and the clamping assembly includes a clamping member provided in the upper tube 1, and a trigger member and an embracing structure are provided on the clamping member; Preferably, two groups of clamping assemblies are arranged in each group of the upper tubes 1, and the clamping parts of each group of the clamping assemblies include a storage plate 102, on which a plug-in tube 13 is fixedly arranged, and two groups of the plug-in tube 13 are symmetrically arranged along the length direction of the storage plate 102, and a first spring 14 is fixedly and slidably arranged in each group of the plug-in tube 13, one end of the first spring 14 abuts against the storage plate 102, and the other end abuts against a plug-in rod 15 slidably arranged in the plug-in tube 13, and a clamping block 6 is fixedly arranged at one end of the two groups of the plug-in rods 15 away from the storage plate 102; For details, please refer to Figure 7 , the first spring 14 is always in a compressed state. In the initial state, the compressed first spring 14 pushes the clamping block 6 away from the placement plate 102. At this time, the clamping block 6 protrudes from the upper tube 1; The trigger member comprises a wedge block 8 slidably disposed in the clamping block 6, and a trigger surface 801 is formed on the left and right sides of the wedge block 8; For details, please refer to Figure 8 , Fig.11 A slider 802 is fixedly provided on the wedge block 8, and the slider 802 is slidably provided in a slide groove 601 provided on the inner wall of the clamping block 6. Under the restriction of the slider 802 and the slide groove 601, the wedge block 8 can only slide along the axial direction of the fixed rod 18.

[0035] The embracing structure includes an embracing member and an elastic member, the embracing member includes an embracing ring 7 slidably arranged in the clamping block 6, the embracing ring 7 is symmetrically arranged in two groups along the length direction of the storage plate 102, and a trigger plate 702 is fixedly arranged on each group of the embracing rings 7; For details, please refer to Figure 8 The above-mentioned holding ring 7 is arranged in an arc structure, the radius of the holding ring 7 of the arc structure is equal to that of the clamping block 6 and the wedge block 8, and the side of the holding ring 7 facing the wedge block 8 is provided with an abutting surface 701 cooperating with the triggering surface 801; See also Figure 8 , Fig.10 , the elastic members are provided in two groups, each group of the elastic members includes a slide bar 21 fixedly arranged in the clamping block 6, a second spring 23 is slidably arranged on the slide bar 21, one end of the second spring 23 abuts against the clamping block 6, and the other end abuts against a moving ring 22 slidably arranged on the slide bar 21; Specifically, the second spring 23 is always in a compressed state. The second spring 23 in the compressed state can push the moving ring 22 toward the wedge block 8, and a protrusion 2201 is formed on the inner wall of the moving ring 22. The protrusion 2201 is slidably arranged in the groove 2101 provided on the outer wall of the slide bar 21. Under the cooperation of the protrusion 2201 and the groove 2101, the moving ring 22 can only reciprocate along the axial direction of the slide bar 21. An extension plate 2202 is also formed on the moving ring 22, and the extension plate 2202 can contact the trigger plate 702. In the initial state, the elastic potential energy stored in the second spring 23 can push the two groups of trigger plates 702 to approach each other, so that the holding ring 7 is immersed in the clamping block 6. At the same time, the trigger plates 702 approaching each other can force the wedge block 8 to protrude from the clamping block 6 under the cooperation of the abutting surface 701 and the trigger surface 801. When protecting the plant, first surround the outside of the plant with two groups of upper tubes 1. At this time, there is still a certain distance between the clamping block 6 and the trunk of the plant, and the mouse can climb up the tree from the inside of the upper tube 1 to gnaw the mouse. In the present invention, the driving assembly arranged on the upper tube 1 can be used to synchronously drive the clamping block 6 in the upper tube 1 to move toward the trunk (the two groups of upper tubes 1 have formed a circular structure surrounding the outside of the trunk). In this process, the wedge block 8 can first contact the trunk, and then with the continued movement of the clamping block 6 and the abutment of the trunk against the wedge block 8, the clamping block 6 can slowly The wedge block 8 is slowly swallowed up. At the same time, the wedge block 8 immersed in the clamping block 6 can, under the cooperation of the trigger surface 801 and the abutment surface 701, force the two groups of holding rings 7 to extend toward the outside of the clamping block 6 with the center of the circle of the upper cylinder 1 as the axis and the inner diameter of the clamping block 6 as the radius. During the extension process, the trigger plate 702 can push the extension plate 2202 to further squeeze the second spring 23 until the clamping block 6 moves to the end of the stroke, and the holding ring 7 extends outward to the maximum distance. At this time, multiple groups of clamping blocks 6 cooperate with the holding ring 7 to just embrace the tree trunk (such as Figure 1 , Figure 3 , Figure 4 As shown), in this state, the clamping block 6 and the holding ring 7 can block the mice climbing up from the inner wall of the upper tube 1 to prevent the mice from gnawing on the fruits of the plant.

[0036] For further information, see Figure 4 , Figure 5 , Figure 6 , Figure 7The driving assembly includes a driving member slidably arranged on the upper tube 1. When the two groups of upper tubes 1 are surrounded into a circular structure, the driving member is driven to slide relative to the upper tube 1. The driving member can drive the clamping member to approach the axis of the upper tube 1. During the approaching process, the trigger member first contacts the plant, and then with the cooperation of the plant, the trigger member can drive the embracing structure to move, thereby embracing and protecting the plant. The driving member comprises a lifting ring 2 sleeved on the upper cylinder 1; For details, see Figure 1 , Figure 2 , Figure 3 , Figure 4 The above-mentioned lifting ring 2 is provided with two groups, and the two groups of lifting rings 2 are respectively slidably arranged on the upper tube 1, and one end of the two groups of lifting rings 2 close to the latch 5 is sleeved on the latch 5.

[0037] The driving assembly further includes a rotating structure and a moving structure, wherein the rotating structure includes a driving rod 12 rotatably mounted in the placement cavity 103, and the driving rod 12 is in a spiral groove 1201 provided on the outer wall thereof, and a lifting member fixedly connected to the lifting ring 2 is sleeved on the driving rod 12, and when the lifting ring 2 moves relative to the upper cylinder 1, the lifting member cooperates with the spiral groove 1201 to force the driving rod 12 to rotate; The lifting member includes a sleeve ring 19 sleeved on the driving rod 12, and a protruding column 1901 is formed on the inner wall of the sleeve ring 19, and the protruding column 1901 is slidably arranged in the spiral groove 1201; For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 The above-mentioned sleeve ring 19 is fixedly connected to the lifting ring 2 through a connecting rod, and the connecting rod is slidably arranged in a through groove 101 opened on the outer wall of the upper tube 1. Under the cooperation of the connecting rod and the through groove 101, the lifting ring 2 can only be lifted and lowered along the axial direction of the sleeve ring 19, and in the process of lifting the lifting ring 2, the contact and extrusion of the groove wall of the spiral groove 1201 by the protruding column 1901 can force the driving rod 12 to rotate in the forward or reverse direction. Then, the rotating driving rod 12 can drive the moving structure to drive the clamping block 6 to move in the direction close to or away from the trunk, thereby protecting the trunk, or removing the upper tube 1 surrounding the outside of the trunk.

[0038] For details, please refer to Figure 5 , Figure 6 , Figure 7The moving structure includes a threaded rod 16 rotatably mounted on the storage plate 102, the threaded rod 16 is connected to the driving rod 12 through a bevel gear set 11, and a threaded sleeve 17 threadedly connected thereto is provided on the threaded rod 16, and a connecting tube 20 is coaxially provided at one end of the threaded sleeve 17 away from the threaded rod 16, and a fixing rod 18 fixedly connected to the clamping block 6 is slidably provided in the connecting tube 20. For details, please refer to Figure 7 , Figure 8 The end of the fixing rod 18 away from the clamping block 6 is provided with two groups of clamping blocks 1801 equidistantly along its circumferential direction. The clamping blocks 1801 are slidably arranged in the clamping grooves 2001 formed on the inner wall of the connecting tube 20. With the cooperation of the clamping grooves 2001 and the clamping blocks 1801, the connecting tube 20 can only slide along the axial direction of the fixing rod 18. Therefore, when the threaded rod 16 continuously rotates in the same direction, the threaded sleeve 17 can be forced to slide along the axial direction of the threaded rod 16. The bevel gear set 11 includes a first bevel gear and a second bevel gear, the first bevel gear is coaxially fixedly connected to the driving rod 12, and the second bevel gear is coaxially fixedly connected to the threaded rod 16; In the initial state, the lifting ring 2 is close to the lower cylinder 3, and the threaded sleeve 17 is close to the placement plate 102. The clamping block 6 is away from the placement plate 102 under the action of the elastic potential energy stored in the first spring 14. At the same time, the fixing rod 18 is away from the threaded sleeve 17 and abuts against the end surface of the insertion end of the connecting cylinder 20. When the upper tube 1 is around the tree trunk, after the position of the upper tube 1 is fixed, the lifting ring 2 is pulled upward, and the sleeve ring 19 fixed to the lifting ring 2 can drive the driving rod 12 to rotate counterclockwise (combined with the protruding column 1901 and the spiral groove 1201) under the cooperation of the protruding column 1901 and the spiral groove 1201. Figure 5 ), then the first bevel gear and the second bevel gear enter into a meshing transmission state, which can drive the threaded rod 16 to continuously rotate in the same direction, and then force the threaded sleeve 17 to drive the connecting tube 20 to approach the tree trunk. In this process, the first spring 14 releases part of the elastic potential energy, which can keep the relative position of the fixing rod 18 and the connecting tube 20 unchanged. Therefore, the clamping block 6 can follow the threaded sleeve 17 to approach the tree trunk synchronously; After the threaded sleeve 17 moves a certain distance, the wedge block 8 can first contact the tree trunk. Then, as the threaded sleeve 17 continues to move, the wedge block 8 slowly sinks into the clamping block 6 and forces the two sets of holding rings 7 in the clamping block 6 to extend outward. After the clamping block 6 contacts the tree trunk, the holding rings 7 extend to the maximum extent and cooperate with the clamping block 6 to fully embrace the tree trunk. Then, the lifting ring 2 is continuously pulled and the threaded sleeve 17 continues to move a certain distance. In this process, due to the contact of the tree trunk, the fixing rod 18 can be moved in the connecting tube 20. Sliding, at the same time, the plug-in rod 15 can squeeze the first spring 14 again until the lifting ring 2 is pulled to form an end, and then the lifting ring 2 is released. At this time, due to the locking function between the threaded rod 16 and the threaded sleeve 17, the clamping block 6 and the embracing ring 7 can remain stable and unchanged around the tree trunk, thereby being able to protect mice from the inner wall of the upper tube 1. This function, combined with the external protection structure, can effectively cut off the path for mice to climb along the tree trunk, thereby preventing mice from gnawing on the fruits of the plants and increasing the fruit yield.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A protective device for controlling grassland pests, characterized in that: include: An upper cylinder (1), wherein two groups of the upper cylinders (1) are provided, and the two groups of the upper cylinders (1) are rotatably connected and can be arranged to form a circular structure, thereby protecting the plants; A clamping assembly is arranged in the placement cavity (103) formed on the upper cylinder (1), wherein the clamping assembly comprises a clamping member arranged in the upper cylinder (1), and a trigger member and an embracing structure are arranged on the clamping member; It also includes a driving assembly arranged on the upper cylinder (1), the driving assembly including a driving member slidably arranged on the upper cylinder (1), when the two groups of the upper cylinders (1) are surrounded to form a circular structure, the driving member is driven to slide relative to the upper cylinder (1), and the driving member can drive the clamping member to approach the axis of the upper cylinder (1), during the approaching process, the trigger member first contacts the plant, and then, with the cooperation of the plant, the trigger member can drive the embracing structure to move, thereby embracing and protecting the plant.

2. A protective device for controlling grassland pests according to claim 1, characterized in that: The clamping member comprises a storage plate (102), on which a plug-in tube (13) is fixedly arranged, and two groups of the plug-in tubes (13) are symmetrically arranged along the length direction of the storage plate (102), and a first spring (14) is fixedly and slidably arranged in each group of the plug-in tubes (13), one end of the first spring (14) abuts against the storage plate (102), and the other end abuts against a plug-in rod (15) slidably arranged in the plug-in tube (13), and a clamping block (6) is fixedly arranged at one end of the two groups of the plug-in rods (15) away from the storage plate (102).

3. A protective device for controlling grassland pests according to claim 2, characterized in that: The trigger member comprises a wedge-shaped block (8) slidably arranged in the clamping block (6), and trigger surfaces (801) are formed on the left and right sides of the wedge-shaped block (8).

4. A protective device for controlling grassland pests according to claim 3, characterized in that: The embracing structure comprises an embracing member and an elastic member, the embracing member comprises an embracing ring (7) slidably arranged in the clamping block (6), two groups of the embracing ring (7) are symmetrically arranged along the length direction of the storage plate (102), and a trigger plate (702) is fixedly arranged on each group of the embracing ring (7); The driving member comprises a lifting ring (2) sleeved on the upper cylinder (1); The driving assembly further comprises a rotating structure and a moving structure, wherein the rotating structure comprises a driving rod (12) rotatably mounted in the placement cavity (103), the driving rod (12) being arranged in a spiral groove (1201) provided on an outer wall thereof, and the driving rod (12) being also sleeved with a lifting member fixedly connected to the lifting ring (2), and when the lifting ring (2) moves relative to the upper cylinder (1), the lifting member cooperates with the spiral groove (1201) to force the driving rod (12) to rotate; The lifting member comprises a sleeve ring (19) sleeved on the driving rod (12), a protruding column (1901) being formed on the inner wall of the sleeve ring (19), and the protruding column (1901) being slidably disposed in the spiral groove (1201).

5. A protective device for controlling grassland pests according to claim 4, characterized in that: Two groups of elastic members are provided, and each group of elastic members comprises a sliding rod (21) fixedly arranged in the clamping block (6).

6. A protective device for controlling grassland pests according to claim 5, characterized in that: A second spring (23) is slidably arranged on the slide bar (21); one end of the second spring (23) abuts against the clamping block (6), and the other end abuts against a moving ring (22) slidably arranged on the slide bar (21).

7. A protective device for controlling grassland pests according to claim 6, characterized in that: The movable structure comprises a threaded rod (16) rotatably mounted on the storage plate (102); the threaded rod (16) is connected to the driving rod (12) via a bevel gear set (11); a threaded sleeve (17) threadedly connected to the threaded rod (16) is provided on the threaded rod (16); a connecting tube (20) is coaxially provided at one end of the threaded sleeve (17) away from the threaded rod (16); a fixing rod (18) fixedly connected to the clamping block (6) is slidably provided in the connecting tube (20).

8. A protective device for controlling grassland pests according to claim 7, characterized in that: The upper cylinder (1) is also provided with an external protective structure, the external protective structure comprising a lower cylinder (3) fixedly connected to the upper cylinder (1), the lower cylinder (3) being provided with a series of balls (4) equidistantly mounted along its circumferential direction.

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