Forest pest and disease control device

Abstract

The invention is suitable for the technical field of pest and disease control equipment, and provides a forest pest and disease control device which comprises a main frame body, two symmetrically arranged clamping heads for clamping trees are slidably connected to the top of the main frame body, and a driving part is arranged at the top of the main frame body; a sliding column connected to the interior of the containing cylinder in a sliding mode is arranged on the outer side of the containing cylinder and the outer side of the clamping head, a liquid medicine channel is formed in the clamping head, an injection head is arranged at the front end of the clamping head, a communicating hole communicated with the liquid medicine channel and the medicine storage space is formed in the side wall of the end of the sliding column, and a first piston is arranged on the side wall of the medicine storage space in a sliding mode. By arranging the clamping head capable of automatically measuring the diameter of the tree, it is guaranteed that when the clamping head clamps the tree, the corresponding amount of liquid medicine is automatically matched according to the position of the clamping head, then the corresponding amount of liquid medicine is injected into the tree, automatic measurement is completed, the liquid medicine is quantified, and the work efficiency is improved. Errors and procedures of manual control quantity are reduced, and steps of trunk injection prevention are simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of pest control equipment, and in particular to a forest pest control device. Background Art

[0002] Pest control is to reduce or prevent pathogenic microorganisms and pests from harming crops or humans and livestock, and certain means are taken artificially. Generally, it can be divided into chemical control using chemical substances such as insecticides and physical control using physical energy such as light or rays or building barriers.

[0003] The chemical control method is a method of applying chemical pesticides to control pests and diseases. The main advantages are quick action, good effect, convenient use, and the ability to eliminate or control a large number of pests and diseases occurring in a short period. Common tools are insecticides, fungicides, etc. However, in the prior art, when controlling pests and diseases of forest trees, most often drones are used to spray liquid medicine or the trunk injection control method is used to control the trees. However, the trunk injection control method in the prior art requires manual measurement of the diameter of the tree, and then different amounts of liquid medicine are injected according to the diameter. The operation is relatively cumbersome, increasing the workload of tree pest control.

[0004] In summary, it is obvious that the prior art has inconveniences and defects in actual use, so it is necessary to improve. Summary of the Invention

[0005] Aiming at the above defects, the purpose of the present invention is to provide a forest pest control device, which can automatically measure the diameter of a tree by setting a clamping head. When the clamping head clamps the tree, the corresponding amount of liquid medicine is proportioned automatically according to the position of the clamping head, and then the corresponding amount of liquid medicine is injected into the interior of the tree, completing automatic measurement and quantitative liquid medicine, reducing the error and process of manual control, and simplifying the steps of trunk injection control.

[0006] To achieve the above purpose, the present invention provides a forest pest control device, including: a main frame body, on the top of which two symmetrically arranged clamping heads for clamping trees are slidably connected, and a driving member for driving the two clamping heads to move towards each other is arranged on the top of the main frame body; a liquid storage cylinder for accommodating liquid medicine is arranged outside the main frame body, a sliding column slidably connected to the inside of the liquid storage cylinder is arranged outside the clamping head, the sliding column slidably controls the liquid storage space of the liquid medicine inside the liquid storage cylinder, a liquid medicine channel is opened inside the clamping head, an injection head is arranged at the front end of the clamping head, the medicine outlet of the liquid medicine channel is connected to the inlet of the injection head, a communication hole for communicating the liquid medicine channel and the liquid storage space is arranged on the side wall of the end of the sliding column, and a first piston is slidably arranged on the side wall of the liquid storage space, and the first piston pushes the liquid medicine to be injected into the interior of the tree through the injection head.

[0007] For the forest pest control device according to the present invention, a first sliding hole and a second sliding hole are provided inside the accommodating cylinder. The first sliding hole is located at one end close to the clamping head. The diameter of the second sliding hole is larger than that of the first sliding hole. A ring convex is provided at the end of the sliding column and is in close contact with the inner wall of the first sliding hole.

[0008] For the forest pest control device according to the present invention, a plugging head is slidably connected inside the second sliding hole. A thrust spring is provided between the plugging head and the bottom of the second sliding hole. After the sliding column disengages from the first sliding hole, it pushes the plugging head to slide inside the second sliding hole.

[0009] For the forest pest control device according to the present invention, a second piston is slidably connected inside the second sliding hole. The outer wall of the second piston is in close contact with the outer wall of the second sliding hole and the inner hole diameter corresponds to that of the first sliding hole. There is a certain gap between the second piston and the sliding column. When the first piston slides to fit with the second piston, the first piston and the second piston cooperate to block the second sliding hole.

[0010] For the forest pest control device according to the present invention, a chute is provided on the inner wall of the first sliding hole. A protrusion is provided on the first piston to cooperate with the chute. A groove is provided on the side wall of the second piston to cooperate with the protrusion. A control hole is provided on the side wall of the first sliding hole close to the clamping head. A positive pressure or negative pressure fluid is introduced into the control hole to drive the first piston and the second piston to slide reciprocally.

[0011] For the forest pest control device according to the present invention, the driving member is a bidirectional screw. Threaded holes are provided on the clamping heads. The two clamping heads are respectively screwed to the two threads of the bidirectional screw. A rotating motor for driving the bidirectional screw to rotate is fixedly provided on the main frame body.

[0012] For the forest pest control device according to the present invention, a medicine injection port communicating with the medicine liquid channel is provided at the top of the clamping head. The medicine injection port is connected to a medicine liquid supply mechanism. A hose is connected between the medicine outlet and the injection head.

[0013] For the forest pest control device according to the present invention, the clamping head includes an arc-shaped clamping portion. An insertion hole inclined 45° from the outside to the inside is provided on the side wall of the arc-shaped clamping portion. The injection head is inserted into the insertion hole.

[0014] For the forest pest control device according to the present invention, a feed control valve is provided on the connecting pipe of the medicine injection port, and a discharge control valve is provided on the connecting pipe of the medicine outlet.

[0015] In summary, the technical effects produced by the present invention are as follows: 1. By setting up the main frame body and having two symmetrically arranged clamping heads slidably connected to its top for clamping trees, the two clamping heads clamp the position of the tree where drilling and liquid injection are required, thereby automatically detecting the diameter of the tree and reducing the operation steps when manually using a tape measure for detection. A driving member for driving the two clamping heads to move towards each other is provided at the top of the main frame body, and the two clamping heads are driven by the driving member to clamp the tree. 2. By setting up the accommodating cylinder and related structures, it is ensured that the size of the medicine storage space can be controlled by the sliding of the clamping head. A sliding column slidably connected to the inside of the accommodating cylinder is provided on the outside of the clamping head. The sliding column slides to control the medicine storage space of the liquid medicine inside the accommodating cylinder, ensuring that different amounts of liquid medicine are injected into trees of different sizes. A liquid medicine channel is opened inside the clamping head, and an injection head is provided at the front end of the clamping head. The liquid medicine is injected into the tree through the injection head. The medicine outlet of the liquid medicine channel is connected to the inlet of the injection head, and a communication hole connecting the liquid medicine channel and the storage space is provided on the side wall of the end of the sliding column. 3. By setting up the communication hole, it is ensured that the storage space and the liquid medicine channel can be connected, further ensuring the supply of liquid medicine to the injection head. A first piston is slidably provided on the side wall of the storage space. The first piston pushes the liquid medicine to be injected into the tree through the injection head, thereby realizing the supply of a quantitative amount of liquid medicine to the injection head. 4. By setting up a clamping head that automatically measures the diameter of the tree, it is ensured that when the clamping head clamps the tree, the corresponding amount of liquid medicine is automatically proportioned according to the position of the clamping head, and then the corresponding amount of liquid medicine is injected into the tree, completing automatic measurement and quantitative liquid medicine, reducing the error and process of manual control amount, and simplifying the steps of trunk injection control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a cross-sectional structural schematic diagram of the first state of the present invention; Figure 3 is Figure 2 the enlarged structural schematic diagram of part B in Figure 4 is a cross-sectional structural schematic diagram of the second state of the present invention; Figure 5 is Figure 4 the enlarged structural schematic diagram of part C in Figure 6 is a structural schematic diagram of the accommodating cylinder of the present invention; Figure 7 is a three-dimensional structural schematic diagram of the clamping head of the present invention; Figure 8 is a three-dimensional structural schematic diagram of the second piston of the present invention; Figure 9 It is a schematic three-dimensional structure diagram of the first piston of the present invention; In the figure, 1 - main frame body, 11 - accommodating cylinder, 12 - second sliding hole, 13 - first sliding hole, 14 - control hole, 15 - thrust spring, 16 - sealing hole, 2 - bidirectional screw, 3 - rotating motor, 4 - injection head, 5 - clamping head, 51 - jack, 52 - arc-shaped clamping part, 53 - threaded hole, 54 - medicine injection port, 55 - medicine outlet, 56 - sliding column, 57 - communication hole, 58 - liquid medicine channel, 6 - plugging head, 7 - second piston, 71 - groove, 72 - second ring body, 8 - first piston, 81 - first ring body, 82 - protrusion, 9 - liquid medicine. Specific embodiments

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] See Figures 1 to 7, the present invention provides a forest pest control device. The forest pest control device includes a main frame body 1, on the top of which are slidably connected two symmetrically arranged clamping heads 5 for clamping trees. The two clamping heads 5 clamp the position of the tree where drilling and liquid injection are required, thereby automatically detecting the diameter of the tree and reducing the operation steps when manually measuring with a tape measure. On the top of the main frame body 1, there is a driving member for driving the two clamping heads 5 to move towards each other, and the two clamping heads 5 are driven by the driving member to clamp the tree; a liquid storage cylinder 11 for accommodating the liquid medicine 9 is arranged outside the main frame body 1. By arranging the liquid storage cylinder 11, it is ensured that the size of the medicine storage space can be controlled by the sliding of the clamping head 5. A sliding column 56 slidably connected to the inside of the liquid storage cylinder 11 is arranged on the outside of the clamping head 5. The sliding column 56 slides to control the medicine storage space of the liquid medicine 9 inside the liquid storage cylinder 11, ensuring that different amounts of the liquid medicine 9 are injected into trees of different sizes. A liquid medicine channel 58 is opened inside the clamping head 5, and an injection head 4 is arranged at the front end of the clamping head 5. The liquid medicine 9 is injected into the tree through the injection head 4. The medicine outlet 55 of the liquid medicine channel 58 is connected to the inlet of the injection head 4. A communication hole 57 for communicating the liquid medicine channel 58 and the medicine storage space is arranged on the side wall of the end of the sliding column 56. By arranging the communication hole 57, it is ensured that the medicine storage space and the liquid medicine channel 58 can be communicated, further ensuring the supply of the liquid medicine 9 to the injection head 4. A first piston 8 is slidably arranged on the side wall of the medicine storage space. The first piston 8 pushes the liquid medicine 9 to be injected into the tree through the injection head 4, thereby realizing the quantitative supply of the liquid medicine 9 to the injection head 4. A feed control valve is arranged on the connecting pipe of the medicine injection port 54, and a discharge control valve is arranged on the connecting pipe of the medicine outlet 55. By the cooperation of the feed control valve and the discharge control valve, the feeding and discharging processes inside the liquid medicine channel 58 are controlled.

[0019] Preferably, a first sliding hole 13 and a second sliding hole 12 are provided inside the accommodating cylinder 11 of the present invention. By providing two sliding holes, it is ensured that during use, since the trees are bounded by a diameter of 10 cm, for trees with a diameter greater than 10 cm and less than 10 cm, for each 1 cm increase in diameter, the amount of the increased liquid medicine 9 required is different. Thus, when inside the first sliding hole 13, it is adapted to small-diameter trees. When clamping a larger-diameter tree, the flange of the sliding column 56 will enter the second sliding hole 12 at this time, realizing the control of the amount of the liquid medicine 9. The first sliding hole 13 is located at one end close to the clamping head 5. The diameter of the second sliding hole 12 is larger than that of the first sliding hole 13. The end of the sliding column 56 is provided with an annular convex that closely adheres to the inner wall of the first sliding hole 13. When inside the first sliding hole 13, the annular convex can seal the first sliding hole 13 at this time, ensuring that the amount of the liquid medicine 9 can be controlled. A plug 6 is slidably connected inside the second sliding hole 12. A thrust spring 15 is provided between the plug 6 and the bottom of the second sliding hole 12. The plug 6 abuts against the annular convex under the action of the thrust spring 15, ensuring the sealing performance on the other side of the plug 6 at this time. At the same time, after the sliding column 56 disengages from the first sliding hole 13, it pushes the plug 6 to slide inside the second sliding hole 12. At this time, the tree just enters a diameter above 10 cm, thereby controlling the increase amount of the liquid medicine 9. At the same time, the medicine storage space is the space formed by the gap between the sliding column 56 and the first sliding hole 13 and the second sliding hole 12. The inner wall of the first sliding hole 13 closely adheres to the outer wall of the annular convex, ensuring the sealing effect of various sliding parts.

[0020] In addition, a second piston 7 is slidably connected inside the second sliding hole 12 of the present invention. The outer wall of the second piston 7 closely adheres to the outer wall of the second sliding hole 12 and the inner hole diameter corresponds to that of the first sliding hole 13, ensuring the sealing of the second sliding hole 12 by the second piston 7. At the same time, when the first piston 8 disengages from the first sliding hole, the first piston 8 can be stuck on the second piston 7 at this time, forming the sealing of the gap between the sliding column 56 and the second sliding hole 12 and the material pushing process. There is a certain gap between the second piston 7 and the sliding column 56, ensuring that the annular convex of the sliding column 56 can slide inside the second piston 7 during use, preventing the sliding column 56 from driving the second piston 7 to move. When the first piston 8 slides to fit with the second piston 7, the first piston 8 and the second piston 7 cooperate to seal the second sliding hole 12. At the same time, a sealing hole 16 that fits with the outer wall of the sliding column 56 is provided at the end of the first sliding hole 13, preventing the liquid medicine 9 from leaking from the gap between the sliding column 56 and the first sliding hole 13 and affecting the amount of the liquid medicine 9.

[0021] See Figures 1 to 5 、 Figure 8 and Figure 9, Further, a chute is provided on the inner wall of the first sliding hole 13 of the present invention. A protrusion 82 cooperating with the chute is provided on the first ring body 81 of the first piston 8 to ensure that the first ring body 81 can tightly seal the entire first sliding hole 13. A groove 71 cooperating with the protrusion 82 is provided on the side wall of the second piston 7. By providing the protrusion 82 and the groove 71, it is ensured that the ring convex can pass through between the second ring bodies 72 of the second piston 7 at this time, preventing interference between the second piston 7 and the ring convex. A control hole 14 is provided in the side wall of one end of the first sliding hole 13 near the clamping head 5. A positive or negative pressure fluid is introduced into the control hole 14 to drive the first piston 8 and the second piston 7 to reciprocate. When the medicine storage space is filled with the liquid medicine 9, a high-pressure fluid (which can be a liquid or a gas) is introduced into the control hole 14 at this time to push the first piston 8 to slide inside the first sliding hole 13, and the liquid medicine 9 inside the medicine storage space is directly pushed into the medicine outlet 55 through the communication hole 57 and injected into the tree through the injection head 4 inside the insertion hole 51, completing the process of trunk injection control.

[0022] Preferably, the driving member of the present invention is a bidirectional screw 2. Threaded holes 53 are provided on the clamping heads 5. The two clamping heads 5 are respectively threadedly connected to the two threaded sections of the bidirectional screw 2. A rotating motor 3 for driving the bidirectional screw 2 to rotate is fixedly provided on the main frame body 1, ensuring that the arc-shaped clamping portions 52 of the two clamping heads 5 can clamp the tree by driving the rotating motor 3. At the same time, a torsion bearing can be provided between the bidirectional screw 2 and the driving shaft of the rotating motor to ensure that the bidirectional screw 2 stops rotating after the clamping head 5 clamps the tree.

[0023] Further, a medicine injection port 54 communicating with the liquid medicine channel 58 is provided at the top of the clamping head 5 of the present invention. The medicine injection port 54 is connected to the liquid medicine 9 supply mechanism to ensure the supply of the liquid medicine 9 inside the medicine storage space. The medicine outlet 55 and the injection head 4 are connected by a hose to prevent affecting the movement of the clamping head 5. The clamping head 5 includes an arc-shaped clamping portion 52. An insertion hole 51 inclined 45° from the outside to the inside is provided on the side wall of the arc-shaped clamping portion 52. After clamping, the injection head 4 can be pulled out and then the tree can be drilled directly facing the insertion hole 51 to ensure the drilling angle. At the same time, after the drilling is completed, the injection head 4 is directly inserted to complete the injection of the liquid medicine 9 inside. It is also possible to drill first and then clamp the tree with the insertion hole 51 facing the drilled tree to ensure that the injection head 4 is inserted into the insertion hole 51 and the drilled hole.

[0024] In this embodiment, in combination with Figures 1 to 9, when in use, this device can be directly installed on a mobile trolley or directly installed on a handheld device. When it is necessary to inject medicine into the corresponding tree, when the diameter of the tree is less than 10 cm, when the clamping head 5 clamps the tree, the ring convex at the end of the sliding column 56 is inside the first sliding hole 13. After the clamping is completed, the actual space required for the liquid medicine 9 at this time is the inner side of the ring convex, the storage space between the outer side of the sliding column 56 and the inner side of the sliding hole. At this time, when pushing the material, the first piston 8 directly pushes the liquid inside this space into the injection head 4 under the action of positive pressure fluid, and at the same time, it no longer moves under the restriction of the inner wall of the ring convex, completing the high-pressure feeding process into the tree. At this time, even if the liquid medicine 9 leaks from the chute to other positions, since other positions are also filled with the liquid medicine 9, under the action of the first piston 8, only the liquid medicine 9 in the corresponding area can be pressed into the injection head 4. And when resetting, the liquid medicine 9 at this time will flow back to its original position, without affecting the subsequent use of the clamping head 5 and the liquid medicine 9.

[0025] When the diameter of the tree is greater than 10 cm, the ring convex of the sliding column 56 will disengage from the inside of the first sliding hole 13 and enter the second sliding hole 12. At this time, the sliding column 56 abuts against the plugging head 6. The plugging head 6 compresses the thrust spring 15 under the pushing action of the sliding column 56, and at this time, the increase in the unit displacement of the liquid medicine 9 changes, adapting to the demand for the liquid medicine 9 of larger trees. And when pushing the material, at this time, the first piston 8 is displaced to abut against the second piston 7. In order to ensure the integrity of the first piston 8 and the second piston 7, the first piston 8 and the second piston 7 can be made of materials to ensure the adsorption effect between the two. By the synchronous movement of the first piston 8 and the second piston 7, the liquid medicine 9 located inside the first sliding hole 13 and the second sliding hole 12 is directly pressed into the injection head 4 to complete the effect of injecting medicine into the tree. When resetting, negative pressure is extracted inside the control hole 14, and the first piston 8 and the second piston 7 are reset to the initial position under the action of negative pressure.

[0026] In summary, the present invention provides a forest pest control device, including: a main frame body, at the top of which there are two symmetrically arranged clamping heads for clamping trees. The two clamping heads clamp the positions of the trees that need to be drilled and injected with liquid, thereby automatically detecting the diameter of the trees and reducing the operation steps when manually measuring with a tape measure. A driving member for driving the two clamping heads to move towards each other is provided at the top of the main frame body, and the two clamping heads are driven by the driving member to clamp the trees; a liquid storage cylinder for accommodating the liquid medicine is arranged outside the main frame body. By providing the liquid storage cylinder, it is ensured that the size of the liquid storage space can be controlled by the sliding of the clamping heads. A sliding column slidably connected to the inside of the liquid storage cylinder is provided outside the clamping head. The sliding column slidably controls the liquid storage space of the liquid medicine inside the liquid storage cylinder to ensure that different amounts of liquid medicine are injected into trees of different sizes. A liquid medicine channel is opened inside the clamping head, and an injection head is provided at the front end of the clamping head. The liquid medicine is injected into the inside of the tree through the injection head. The liquid outlet of the liquid medicine channel is connected to the inlet of the injection head. A communication hole for communicating the liquid medicine channel and the liquid storage space is provided on the side wall of the end of the sliding column. By providing the communication hole, it is ensured that the liquid storage space and the liquid medicine channel can be communicated, and further ensured that the injection head is supplied with liquid medicine. A first piston is slidably arranged on the side wall of the liquid storage space. The first piston pushes the liquid medicine to be injected into the inside of the tree through the injection head, thereby realizing the quantitative supply of the liquid medicine to the injection head. In summary, the technical effect produced by the present invention is that by providing a clamping head that automatically measures the diameter of the trees, it is ensured that when the clamping head clamps the trees, the corresponding amount of liquid medicine is automatically proportioned according to the position of the clamping head, and then the corresponding amount of liquid medicine is injected into the inside of the trees, completing automatic measurement and quantitative liquid medicine injection, reducing the error and process of manual control of the amount, and simplifying the steps of trunk injection control.

[0027] Of course, the present invention may also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

Claims

1. A forest pest control device, characterized in that: include: A main frame body, the top of which is slidably connected to two symmetrically arranged clamping heads for clamping trees, and a driving member for driving the two clamping heads to move toward each other is provided on the top of the main frame body; A storage cylinder for containing liquid medicine is arranged on the outside of the main frame, and a sliding column slidably connected to the inside of the storage cylinder is provided on the outside of the clamping head. The sliding column slides to control the size of the storage space for the liquid medicine inside the storage cylinder. A liquid medicine channel is opened inside the clamping head, and an injection head is provided at the front end of the clamping head. The medicine outlet of the liquid medicine channel is connected with the inlet of the injection head. A connecting hole connecting the liquid medicine channel and the medicine storage space is provided on the end side wall of the sliding column. A first piston is slidably provided on the side wall of the medicine storage space, and the first piston pushes the liquid medicine to be injected into the tree through the injection head.

2. The forest pest control device according to claim 1, characterized in that: The interior of the accommodating tube is provided with a first sliding hole and a second sliding hole, the first sliding hole is located at one end adjacent to the clamping head, the diameter of the second sliding hole is larger than the diameter of the first sliding hole, and the end of the sliding column is provided with an annular protrusion close to the inner wall of the first sliding hole.

3. The forest pest control device according to claim 2, characterized in that: The second sliding hole is internally slidably connected with a plugging head, a thrust spring is provided between the plugging head and the bottom of the second sliding hole, and the sliding column pushes the plugging head to slide inside the second sliding hole after being separated from the first sliding hole.

4. The forest pest control device according to claim 2, characterized in that: A second piston is slidably connected to the interior of the second sliding hole, an outer wall of the second piston is in close contact with the outer wall of the second sliding hole and an inner hole diameter corresponds to a diameter of the first sliding hole, a certain gap is provided between the second piston and the sliding column, and when the first piston slides to fit with the second piston, the first piston and the second piston cooperate to seal the second sliding hole.

5. The forest pest control device according to claim 4, characterized in that: The inner wall of the first sliding hole is provided with a sliding groove, the first piston is provided with a protrusion that cooperates with the sliding groove, the side wall of the second piston is provided with a groove that cooperates with the protrusion, and the side wall of the first sliding hole adjacent to the clamping head is provided with a control hole, and positive pressure or negative pressure fluid is introduced into the control hole to drive the first piston and the second piston to slide reciprocatingly.

6. The forest pest control device according to any one of claims 1 to 5, characterized in that: The driving member is a bidirectional screw, a threaded hole is arranged on the clamping head, two clamping heads are respectively threadedly connected with two sections of threads of the bidirectional screw, and a rotating motor for driving the bidirectional screw to rotate is fixedly arranged on the main frame.

7. The forest pest control device according to claim 6, characterized in that: A drug injection port communicating with the drug liquid channel is provided on the top of the clamping head. The drug injection port is connected to a drug liquid supply mechanism. The drug outlet is connected to the injection head via a hose.

8. The forest pest control device according to claim 5, characterized in that: The clamping head comprises an arc-shaped clamping portion, a side wall of which is provided with an insertion hole inclined at 45 degrees from outside to inside, and the injection head is inserted into the inside of the insertion hole.

9. The forest pest control device according to claim 7, characterized in that: A feed control valve is arranged on the connecting pipe of the drug injection port, and a discharge control valve is arranged on the connecting pipe of the drug discharge port.

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