A device for drilling and injecting medicine into a tree trunk
By designing a trunk drilling and injection device, a transparent elastic telescopic sleeve and drill rod are used to prevent tree debris from splashing, solving the problems of obstructed vision and liquid deviation during trunk drilling and injection. This achieves precise drilling and liquid injection, improving the prevention and control effect and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 镇安县野生动物和天然林保护管理中心
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-23
Smart Images

Figure CN224386284U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tree trunk disease and pest control technology, specifically relating to a tree trunk drilling and injection device. Background Technology
[0002] Pine wilt nematode belongs to the phylum Nematoda, class Nematoda, order Lysomorpha, family Lysomorpha, and genus Lysomorpha. The pine wilt disease it causes is listed as one of the most dangerous forest diseases globally. This pathogen spreads among pine trees via vector insects such as the pine sawyer beetle. After invading the xylem, it causes resin duct blockage and cytotoxic reactions, leading to chlorosis of the needles and the death of the entire tree. The direct economic losses caused by this disease in my country are significant each year, and it shows a trend of spreading to higher latitude regions.
[0003] Currently, the mainstream control method is chemical intervention, specifically using systemic agents such as BT injection solution for trunk drilling and injection. Traditional methods require using a handheld electric drill to drill angled holes 8-10 mm in diameter and 50-60 mm deep at a height of 1-1.5 meters above the ground, followed by inserting an injection device to apply the pesticide. However, in practice, it has been found that when the drill bit speed reaches 2000-3000 rpm, the viscous debris formed by the mixture of resin and wood fibers splashes at high speed along the drill groove, not only obscuring the operator's vision and causing drilling angle deviations, but also easily causing pesticide leakage due to misalignment, directly affecting the control effect. Furthermore, the high-speed rotating exposed drill bit poses a risk of slippage. Therefore, we propose a trunk drilling and injection device to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to solve the problem that when drilling holes in tree trunks for injection, the sticky debris formed by the mixture of resin and wood fiber splashes at high speed along the drill groove, which can easily obstruct the operator's view and cause deviations in the drilling angle.
[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0006] A trunk drilling and injection device includes a mounting box, a drilling assembly, and an injection assembly disposed within the mounting box. The mounting box has an arc-shaped groove on its front side, within which an elastic telescopic sleeve is fixedly installed. The elastic telescopic sleeve is made of transparent plastic. The drilling assembly includes a movable seat, a drive motor, and a drill rod. The mounting box has a sliding groove and a receiving chamber. The movable seat is slidably installed within the sliding groove. The drive motor is fixedly installed within the movable seat. The drill rod is fixedly installed on the output shaft of the drive motor. The arc-shaped groove has a through hole for the drill rod to pass through. A push rod is fixedly installed on the movable seat. The upper end of the mounting box has a strip-shaped opening, within which the push rod is slidably installed. The lower end of the mounting box has a handle with a control button. A battery is fixedly installed within the receiving chamber. The battery, drive motor, and control button are electrically connected.
[0007] Furthermore, two compression springs are fixedly installed between the movable seat and the groove wall near the arc-shaped groove side of the slide, and the two compression springs are arranged symmetrically from left to right. With this structural design, the two compression springs exert an elastic force on the movable seat, which can push the movable seat from its unused state to its initial position for easy use.
[0008] Further specifying, the injection assembly includes an adapter ring, a bending rod, a drug storage cylinder, and a squeezing cylinder. A convex ring is fixedly installed at one end of the drill rod near the output shaft of the drive motor. A fan-shaped opening is formed on the outer wall of the convex ring. An injection groove communicating with the fan-shaped opening is formed inside the drill rod. The adapter ring is rotatably mounted on the convex ring. A rotary sealing ring is provided between the adapter ring and the convex ring. The bending rod is fixedly mounted on the adapter ring. A fixing rod is fixedly installed on the back of the bending rod. The end of the fixing rod is fixedly connected to the movable seat. The drug storage cylinder and the squeezing cylinder are respectively fixedly installed on the front and rear sides of the bending rod. Both the drug storage cylinder and the squeezing cylinder are folded cylindrical structures. A one-way valve is fixedly connected between the drug storage cylinder and the squeezing cylinder. A conveying groove is formed inside the bending rod, with both ends communicating with the squeezing cylinder and the relief groove respectively. An installation cavity is formed inside the mounting box for placing the drug storage cylinder and the squeezing cylinder and for the bending rod to move. With this structural design, when the movable seat moves towards the arc-shaped groove, the medicine storage cylinder is squeezed by the bending rod, and the medicine inside flows into the squeezing cylinder through the one-way valve. When the movable seat returns to the initial position, the squeezing cylinder is squeezed, and the medicine inside flows into the relief groove and the injection groove through the conveying groove, which can inject the medicine into the hole.
[0009] Further specifying, a bent tube is fixedly inserted into the end of the medicine storage cylinder away from the extrusion cylinder, and the end of the bent tube extends to the upper end of the mounting box. A movable plug is threadedly connected to the opening of the bent tube. This structural design facilitates the addition of liquid medicine into the medicine storage cylinder through the movable plug and the bent tube.
[0010] Further specifying, a plug is movably installed at the end of the drill rod away from the drive motor. A conical head and a limiting end are fixedly installed at both ends of the plug, respectively. The limiting end has multiple oblong grooves. A through hole communicating with the injection tank is opened at the end of the drill rod away from the drive motor. This structural design prevents tree debris from entering the injection tank and delivers the chemical solution to the drilled hole when the drill rod retracts.
[0011] The utility model adopting the above technical solution has the following advantages:
[0012] This invention, through the cooperation of a drilling component and an injection component, allows for drilling and injection of chemicals into tree trunks. During drilling, the elastic telescopic sleeve can be controlled to fit tightly against the tree trunk, allowing the wood chips generated during drilling to enter the elastic telescopic sleeve, thus preventing wood chips from splashing. Furthermore, the drilling point can be observed through the elastic telescopic sleeve, reducing the problem of drilling angle deviation caused by obstruction of the operator's view. Attached Figure Description
[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;
[0014] Figure 1 This is a schematic diagram of the structure of a tree trunk drilling and injection device according to the present invention;
[0015] Figure 2 This is a cross-sectional view of a trunk drilling and injection device according to the present invention.
[0016] Figure 3 This is a schematic diagram of the drilling component and the injection component in a tree trunk drilling and injection device of this utility model;
[0017] Figure 4 This is a cross-sectional structural diagram of the medicine storage cylinder and the extrusion cylinder in the tree trunk drilling and injection device of this utility model;
[0018] Figure 5 This is a cross-sectional view of the injection component in a tree trunk drilling and injection device according to the present invention.
[0019] Figure 6 This is a cross-sectional view of the injection component in a tree trunk drilling and injection device according to this utility model from another angle.
[0020] Figure 7 This is a schematic diagram of the structure of a tree trunk drilling and injection device of the present invention, showing the drill rod and the plug in a separated state.
[0021] The symbols for the main components are explained below:
[0022] 1. Mounting box; 11. Slide rail; 12. Receiving compartment; 13. Strip opening; 14. Handle; 15. Control button;
[0023] 2. Drilling assembly; 21. Movable base; 22. Drive motor;
[0024] 23. Drill pipe; 231. Convex ring; 232. Plug;
[0025] 24. Push rod; 25. Battery; 26. Compression spring;
[0026] 3. Injection assembly; 31. Adapter ring;
[0027] 32. Bending rod; 321. Fixed rod; 322. Conveying trough;
[0028] 33. Medicine storage cylinder; 331. Bent tube; 332. Movable plug;
[0029] 34. Extrusion cylinder; 35. One-way valve;
[0030] 4. Elastic stretch sleeve. Detailed Implementation
[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.
[0032] like Figures 1 to 7 As shown, this utility model discloses a tree trunk drilling and injection device, comprising a mounting box 1, a drilling assembly 2, and an injection assembly 3 disposed within the mounting box 1. The mounting box 1 has an arc-shaped groove on its front side, within which an elastic telescopic sleeve 4 is fixedly installed. The elastic telescopic sleeve 4 is made of transparent plastic. The drilling assembly 2 includes a movable seat 21, a drive motor 22, and a drill rod 23. The mounting box 1 has a sliding groove 11 and a receiving chamber 12. The movable seat 21 is slidably mounted within the sliding groove 11. The drive motor 22 is fixedly mounted within the movable seat 21, and the drill rod 23 is fixedly mounted on the output shaft of the drive motor 22. A through hole for the drill rod 23 to pass through is provided in the arc-shaped groove. A push rod 24 is fixedly installed on the movable seat 21. A strip-shaped opening 13 is provided at the upper end of the mounting box 1. The push rod 24 is slidably installed in the strip-shaped opening 13. A handle 14 is fixedly installed at the lower end of the mounting box 1. A control button 15 is provided on the handle 14. A storage battery 25 is fixedly installed in the receiving compartment 12. The storage battery 25, the drive motor 22 and the control button 15 are electrically connected. Two compression springs 26 are fixedly installed between the movable seat 21 and the groove wall of the slide 11 near the arc-shaped groove. The two compression springs 26 are arranged symmetrically on the left and right.
[0033] The injection assembly 3 includes a transition ring 31, a bent rod 32, a drug reservoir 33, and a compression cylinder 34. A convex ring 231 is fixedly installed at one end of the drill rod 23 near the output shaft of the drive motor 22. A fan-shaped opening is formed on the outer wall of the convex ring 231, and an injection groove communicating with the fan-shaped opening is formed inside the drill rod 23. The transition ring 31 is rotatably mounted on the convex ring 231, and a rotary sealing ring is provided between the transition ring 31 and the convex ring 231. The bent rod 32 is fixedly mounted on the transition ring 31, and a fixing rod 3 is fixedly installed on the back of the bent rod 32. 21. The end of the fixed rod 321 is fixedly connected to the movable seat 21. The medicine storage cylinder 33 and the extrusion cylinder 34 are respectively fixedly installed on the front and rear sides of the bent rod 32. The medicine storage cylinder 33 and the extrusion cylinder 34 are both folded cylindrical structures. A one-way valve 35 is fixedly connected between the medicine storage cylinder 33 and the extrusion cylinder 34. The bent rod 32 has a conveying groove 322 with both ends connected to the extrusion cylinder 34 and the relief groove respectively. The mounting box 1 has a mounting cavity for placing the medicine storage cylinder 33 and the extrusion cylinder 34 and for the bent rod 32 to move.
[0034] A bent tube 331 is fixedly inserted at the end of the medicine storage cylinder 33 away from the extrusion cylinder 34. The end of the bent tube 331 extends to the upper end of the mounting box 1. A movable plug 332 is threaded at the opening of the bent tube 331. By opening the movable plug 332, medicine can be added to the medicine storage cylinder 33 through the bent tube 331.
[0035] A plug 232 is movably installed at the end of the drill rod 23 away from the drive motor 22. A conical head and a limiting end are fixedly installed at both ends of the plug 232. The conical head can block the injection groove when the drill rod 23 is drilling to prevent tree debris from entering the injection groove and causing blockage. Its conical structure can reduce the resistance encountered by the drill rod 23 when drilling. Multiple waist-shaped grooves are opened on the limiting end. The limiting end can prevent the plug 232 from separating from the drill rod 23. The waist-shaped grooves on it can ensure that the liquid can pass smoothly. A through hole connected to the injection groove is opened at the end of the drill rod 23 away from the drive motor 22.
[0036] The method of using this utility model is as follows:
[0037] When in use, open the movable plug 332 and add the medicine into the medicine storage cylinder 33 through the bent tube 331. Hold the handle 14 with one hand to lift the entire mounting box 1, control the end of the drill rod 23 to be located at the drilling point, and attach the elastic telescopic sleeve 4 at the end of the mounting box 1 to the tree trunk.
[0038] Pressing the control button 15 on the handle 14 powers on the drive motor 22, causing the drill rod 23 to rotate. At the same time, the other hand pushes the movable seat 21 through the push rod 24 to move within the slide groove 11. The movable seat 21 compresses the compression spring 26 at its end, causing the drive motor 22 and the drill rod 23 to penetrate deeper into the tree trunk and drill holes. When the movable seat 21 moves towards the tree trunk, the bending rod 32 compresses the medicine storage cylinder 33. The medicine in the medicine storage cylinder 33 enters the squeezing cylinder 34 through the one-way valve 35 for subsequent use.
[0039] After drilling is completed, the force applied to the push rod 24 is released. At this time, the movable seat 21 moves to the initial position under the elastic force of the compression spring 26 (if the movable seat 21 does not retract after being released, it needs to be retracted by the push rod 24). The drill rod 23 is brought out of the hole. At this time, the bending rod 32 squeezes the extrusion cylinder 34. The medicine in the extrusion cylinder 34 flows into the injection groove in the drill rod 23 through the delivery groove 322 and the relief groove until the conical head of the plug 232 at the end of the injection groove is pushed open. At this time, the through hole is connected to the drilled hole, and the medicine will flow into the hole to irrigate and treat the tree trunk.
[0040] The above provides a detailed description of a tree trunk drilling and injection device provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A trunk drilling and injection device, comprising a mounting box (1), a drilling assembly (2), and an injection assembly (3) disposed within the mounting box (1), characterized in that: The mounting box (1) has an arc-shaped groove on its front side, and an elastic telescopic sleeve (4) is fixedly installed in the arc-shaped groove. The elastic telescopic sleeve (4) is made of transparent plastic. The drilling assembly (2) includes a movable seat (21), a drive motor (22), and a drill rod (23). The mounting box (1) has a sliding groove (11) and a receiving chamber (12). The movable seat (21) is slidably installed in the sliding groove (11). The drive motor (22) is fixedly installed in the movable seat (21). The drill rod (23) is fixedly installed on the output shaft of the drive motor (22). The arc-shaped groove has a through hole for the drill rod (23) to pass through. A push rod (24) is fixedly installed on the movable seat (21). A strip-shaped opening (13) is opened at the upper end of the mounting box (1). The push rod (24) is slidably installed in the strip-shaped opening (13). A handle (14) is fixedly installed at the lower end of the mounting box (1). A control button (15) is provided on the handle (14). A storage battery (25) is fixedly installed in the receiving compartment (12). The storage battery (25), the drive motor (22), and the control button (15) are electrically connected.
2. The trunk drilling and injection device according to claim 1, characterized in that: Two compression springs (26) are fixedly installed between the movable seat (21) and the groove wall of the slide (11) near the arc groove side. The two compression springs (26) are arranged symmetrically on the left and right.
3. The trunk drilling and injection device according to claim 1, characterized in that: The injection assembly (3) includes a transition ring (31), a bent rod (32), a drug reservoir (33), and a compression cylinder (34). A convex ring (231) is fixedly installed at one end of the drill rod (23) near the output shaft of the drive motor (22). A fan-shaped opening is provided on the outer wall of the convex ring (231). An injection groove communicating with the fan-shaped opening is provided inside the drill rod (23). The transition ring (31) is rotatably mounted on the convex ring (231). A rotary sealing ring is provided between the transition ring (31) and the convex ring (231). The bent rod (32) is fixedly mounted on the transition ring (31), and a fixing rod is fixedly installed on the back of the bent rod (32). 321), the end of the fixed rod (321) is fixedly connected to the movable seat (21), the medicine storage cylinder (33) and the extrusion cylinder (34) are respectively fixedly installed on the front and rear sides of the bent rod (32), the medicine storage cylinder (33) and the extrusion cylinder (34) are both folded cylindrical structures, a one-way valve (35) is fixedly connected between the medicine storage cylinder (33) and the extrusion cylinder (34), a conveying groove (322) is opened in the bent rod (32) with both ends connected to the extrusion cylinder (34) and the relief groove respectively, and an installation cavity is opened in the mounting box (1) for placing the medicine storage cylinder (33) and the extrusion cylinder (34) and for the bent rod (32) to move.
4. The trunk drilling and injection device according to claim 3, characterized in that: A bent tube (331) is fixedly inserted at one end of the medicine storage cylinder (33) away from the extrusion cylinder (34). The end of the bent tube (331) extends through to the upper end of the mounting box (1). A movable plug (332) is threadedly connected to the opening of the bent tube (331).
5. The trunk drilling and injection device according to claim 3, characterized in that: A plug (232) is movably installed at the end of the drill rod (23) away from the drive motor (22). A conical head and a limiting end are fixedly installed at both ends of the plug (232). Multiple waist-shaped grooves are opened on the limiting end. A through hole connected to the injection groove is opened at the end of the drill rod (23) away from the drive motor (22).