A drug injection device

Abstract

The application discloses a medicine injection device, which comprises an electric drill assembly, a punching assembly, a liquid inlet assembly and a high-pressure assembly. The electric drill assembly comprises an electric drill output shaft. The punching assembly is connected to the front and back of the electric drill output shaft. The punching assembly comprises a medicine injection needle at the front end. The electric drill assembly is provided with a power pick mode. In the power pick mode, the electric drill output shaft knocks the punching assembly forward, so that the medicine injection needle is knocked into the tree forward to punch a hole. The liquid inlet assembly is connected to the punching assembly and the high-pressure assembly. The liquid inlet assembly and the punching assembly are provided with a medicine injection channel connected thereto. The high-pressure assembly is used for injecting liquid medicine into the medicine injection channel. The medicine injection device is integrally designed for punching and medicine injection. The punching speed is high, the operation is simple, the working efficiency is high, the medicine injection hole is easy to recover, and the damage to the tree is small.

Description

Technical Field

[0001] This invention relates to the field of tree injection technology, and more specifically to an injection device. Background Technology

[0002] High-pressure trunk injection technology involves injecting pesticide solution into the plant under high pressure, allowing it to be transported to various parts of the tree via the sap flow to exert its effect. It is primarily used for pesticide application in tall trees. Existing injection equipment typically separates drilling and injection. The general procedure involves first drilling a hole deep into the xylem in the trunk, then removing the drill bit and injecting the pesticide solution through the hole using an infusion device. This process is time-consuming, cumbersome, and inefficient. Furthermore, current drilling devices often use handheld electric drills or backpack gasoline engines to rotate the drill bit. Rotary drilling is time-consuming, and the injection holes are difficult to repair, causing significant damage to the tree. Summary of the Invention

[0003] To address at least one of the problems mentioned in the background art, the present invention provides a drug injection device with an integrated design of drilling and drug injection, which has a fast drilling speed, is easy to operate, has high work efficiency, and the injected injection holes are easy to restore, causing minimal damage to trees.

[0004] The specific technical solution provided by this invention is as follows:

[0005] A drug injection device is provided, including an electric drill assembly, a drilling assembly, a liquid injection assembly, and a high-pressure assembly. The electric drill assembly includes an electric drill output shaft. The drilling assembly is connected to the electric drill output shaft at the front and rear. The drilling assembly includes a drug injection needle at the front end. The electric drill assembly has an electric pick mode. In the electric pick mode, the electric drill output shaft strikes the drilling assembly forward, causing the drug injection needle to strike the tree to make a hole. The liquid injection assembly connects the drilling assembly and the high-pressure assembly. The liquid injection assembly and the drilling assembly have connected drug injection channels. The high-pressure assembly is used to inject drug liquid into the drug injection channels.

[0006] By employing the above technical solution, this invention utilizes the electric drill output shaft in the electric hammer mode of the electric drill assembly to strike the drilling assembly forward, causing the injection needle to be driven into the tree to create a hole. This method, through the high thrust of the electric drill output shaft, directly drives the injection needle into the tree to create a hole, resulting in fast drilling speed and simple operation. Furthermore, the striking drilling method allows for the use of a small-diameter needle tip, and after the injection needle is withdrawn, the tree slowly recovers the injection hole, minimizing damage to the tree. A liquid inlet assembly connects the drilling assembly and the high-pressure assembly, both containing interconnected injection channels. After the injection needle strikes the tree to create a hole, the high-pressure assembly injects liquid medicine into the injection channel. The liquid medicine then flows out of the injection needle and into the tree, completing the injection process. This achieves integrated drilling and injection, simplifying the drilling and injection operation and increasing work efficiency.

[0007] As a preferred embodiment of the above solution, the injection device further includes a transmission assembly and an ejection assembly. The transmission assembly connects the output shaft of the electric drill and the ejection assembly. The electric drill assembly has an electric drill mode. In the electric drill mode, the output shaft of the electric drill rotates and drives the ejection assembly to move forward through the transmission assembly. The ejection assembly pushes the injection needle out of the tree by pressing against the tree.

[0008] As a preferred embodiment of the above scheme, the transmission assembly includes an input gear, an output gear, and a lead screw. The input gear is fixedly sleeved on the output shaft of the electric drill. The input gear and the output gear mesh and can move back and forth relative to each other. The output gear is fixedly connected to the lead screw. The ejection assembly includes a lead screw nut and a movable sleeve. The lead screw nut is threadedly connected to the lead screw and fixedly connected to the movable sleeve. The front part of the injection needle extends out of the movable sleeve, and the front end of the injection needle is provided with an outlet hole communicating with the injection channel.

[0009] As a preferred embodiment of the above solution, the injection device further includes a housing assembly, which includes a guide sleeve disposed within a movable sleeve. The drilling assembly further includes an output rod and an elastic element movably disposed within the guide sleeve. The front end of the output rod is fixedly connected to the injection needle, and the rear end of the output rod contacts the front end of the electric drill output shaft. An elastic element is provided between the output rod and the guide sleeve. The guide sleeve is provided with a first clearance groove, and the movable sleeve is provided with a second clearance groove. One end of the liquid inlet assembly passes through the first clearance groove and the second clearance groove and is connected to the output rod.

[0010] As a preferred embodiment of the above solution, the housing assembly further includes a connecting shell, which is fixedly connected to the rear end of the guide sleeve. The electric drill output shaft, input gear, and output gear are disposed inside the connecting shell, with the output gear rotatably mounted on the connecting shell. The electric drill assembly is fixed on the connecting shell.

[0011] As a preferred embodiment of the above scheme, the high-pressure assembly includes a container and an injection assembly. The container has a drug solution chamber and an installation chamber that are separated from each other. The injection assembly is disposed in the installation chamber. The injection assembly includes a drive component, a piston rod, a storage chamber, an outlet check valve, and an inlet check valve. The outlet check valve connects the storage chamber and the inlet assembly, and the inlet check valve connects the storage chamber and the drug solution chamber. The drive component drives the piston rod to reciprocate within the storage chamber to pressurize the drug solution in the storage chamber into the inlet assembly, or to draw the drug solution in the drug solution chamber into the storage chamber.

[0012] As a preferred embodiment of the above solution, the high-pressure component further includes a control component, which includes a main control board and a pressure detection element. The main control board is connected to the pressure detection element and the drive element. The liquid storage chamber includes a liquid storage chamber body and a connecting chamber. The piston rod is disposed in the liquid storage chamber body. A through hole is connected between the liquid storage chamber body and the connecting chamber. The connecting chamber is respectively connected to an outlet check valve and an inlet check valve. The pressure detection element is disposed on the connecting chamber or the through hole.

[0013] As a preferred embodiment of the above solution, the electric drill assembly further includes an electric drill body, an upper shell of an electric drill connecting plate, and a lower shell of an electric drill connecting plate connected to the output shaft of the electric drill. The upper shell of the electric drill connecting plate and the lower shell of the electric drill connecting plate are fixedly connected. The front part of the electric drill body passes through the space between the upper shell of the electric drill connecting plate and the lower shell of the electric drill connecting plate. The main control board is disposed in the upper shell of the electric drill connecting plate or the lower shell of the electric drill connecting plate. The control assembly also includes a terminal board connected to the main control board. The terminal board is disposed in the mounting cavity and is connected to the pressure detection element and the drive element.

[0014] As a preferred embodiment of the above solution, the driving component includes a motor, a planetary transmission assembly, a drive screw, and a drive screw nut. The planetary transmission assembly connects the motor and the drive screw. The drive screw nut is screwed onto the drive screw. The end of the piston rod away from the liquid storage chamber is fixed to the drive screw nut. The piston rod is provided with a third clearance groove, and the drive screw portion is disposed in the third clearance groove.

[0015] As a preferred embodiment of the above solution, the injection assembly further includes a sensing assembly, which includes a first sensor, a second sensor, and a stroke rod fixed on the drive screw nut. The first sensor and the second sensor are connected to the motor. The stroke rod moves between the first sensor and the second sensor. When the second sensor senses that the stroke rod is approaching, the motor changes direction. When the first sensor senses that the stroke rod is approaching, the motor stops working. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the handheld end of the present invention.

[0019] Figure 3 for Figure 2 A partial structural diagram;

[0020] Figure 4 This is a cross-sectional view of the container and injection assembly of the present invention.

[0021] Figure 5 for Figure 4 A schematic diagram of the bottom structure;

[0022] Figure 6 This is a schematic diagram of the overall structure of the injection assembly of the present invention;

[0023] Figure 7 This is a cross-sectional view of the injection assembly of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] As described in the background section, high-pressure trunk injection technology involves injecting a pesticide solution into the plant under high pressure, allowing it to be transported to various parts of the tree via the sap flow to exert its effect. This technology is primarily used for pesticide application to tall trees. Existing injection and drilling devices are typically used handheld, resulting in large, heavy machines. The drilling and injection devices are usually separate units, leading to long intervals between holes and the discharge of sawdust. This causes pesticide leakage, waste, and environmental pollution. The injection holes are typically 8-10mm or larger, making them difficult to repair and causing significant damage to the tree. The injection volume is small, and the treatment time per tree is long, resulting in wasted time, cumbersome operation, and low efficiency. This invention integrates drilling and injection into a single device, offering fast drilling speed, simple operation, high efficiency, and easy hole repair with minimal damage to the tree. The embodiments of this invention are described in detail below, where "front" and "upper" refer to... Figure 2 and Figure 6 The directions of the arrows in the image.

[0027] The following content is for reference only. Figures 1 to 7 .

[0028] This invention provides a drug injection device, including an electric drill assembly 1, a drilling assembly 2, a liquid injection assembly 3, and a high-pressure assembly 4. The electric drill assembly 1 includes an electric drill output shaft 11. The drilling assembly 2 is connected to the electric drill output shaft 11. The drilling assembly 2 includes a drug injection needle 21 at its front end. The electric drill assembly 1 has an electric pick mode. In the electric pick mode, the electric drill output shaft 11 strikes the drilling assembly 2 forward, causing the drug injection needle 21 to strike the tree to make a hole, i.e., to make a drug injection hole. The liquid injection assembly 3 connects the drilling assembly 2 and the high-pressure assembly 4. The liquid injection assembly 3 and the drilling assembly 2 have connected drug injection channels 10. The high-pressure assembly 4 is used to inject drug liquid into the drug injection channels 10. The front end of the drug injection needle 21 has six liquid outlet holes 211 that communicate with the drug injection channels 10.

[0029] The injection device also includes a transmission assembly 5 and an ejection assembly 6. The transmission assembly 5 connects the electric drill output shaft 11 and the ejection assembly 6. The electric drill assembly 1 has an electric drill mode. In the electric drill mode, the electric drill output shaft 11 rotates and drives the ejection assembly 6 to move forward through the transmission assembly 5. The ejection assembly 6 ejects the injection needle 21 out of the tree by pressing against the tree.

[0030] The transmission assembly 5 includes an input gear 51, an output gear 52, a lead screw 53, a tension screw 54, a limit screw 55, and a nut washer 56. The input gear 51 is fixedly sleeved on the output shaft 11 of the electric drill. The input gear 51 meshes with the output gear 52 and can move back and forth relative to each other. That is, when the output shaft 11 of the electric drill drives the input gear 51 to move forward, the input gear 51 moves forward relative to the output gear 52 and remains meshed with the output gear 52. The output gear 52 is fixedly connected to the lead screw 53. The ejection assembly 6 includes a lead screw nut 61 and a moving sleeve 62. The lead screw nut 61 is threadedly connected to the lead screw 53 and fixedly connected to the moving sleeve 62. The front part of the injection needle 21 extends out of the moving sleeve 62. In this embodiment, the lead screw 53 is a ball screw, the output gear 52 has a stepped hole 521, the front part of the stepped hole 521 is a D-shaped hole 522, the rear end of the lead screw 53 has a D-shaped shaft 531, the D-shaped shaft 531 is inserted into the D-shaped hole 522, the D-shaped shaft 531 has a threaded hole 532, the tension screw 54 is threadedly connected to the threaded hole 532, and the head of the tension screw 54 presses against the step of the stepped hole 521; the movable sleeve 62 has a through-hole... The upper and lower chambers of the screw 53 and screw nut 61 are arranged in the upper chamber 621. The front end of the screw 53 is provided with a fixed limit screw 55. The upper and lower ends of the limit screw 55 are provided with protruding limit parts 551. The middle inner wall of the upper chamber 621 is provided with a limit protrusion 622 that cooperates with the limit part 551. The screw nut 61 is fixed in the upper chamber 621 behind the limit protrusion 622. A nut washer 56 is provided on one side of the screw nut 61.

[0031] The injection device also includes a housing assembly 7, which includes a guide sleeve 71 disposed within a movable sleeve 62. The drilling assembly 2 also includes an output rod 22 and an elastic element 23 movably disposed within the guide sleeve 71. The front end of the output rod 22 is fixedly connected to the injection needle 21, and the rear end of the output rod 22 contacts the front end of the electric drill output shaft 11. An elastic element 23 is provided between the output rod 22 and the guide sleeve 71. The bottom end of the guide sleeve 71 is provided with a first clearance groove 711, and the bottom end of the movable sleeve 62 is provided with a second clearance groove 623 communicating with the first clearance groove 711. The second clearance groove 623 passes through the rear end of the movable sleeve 62, facilitating the forward movement of the movable sleeve 62 when it performs an ejection action. One end of the liquid inlet assembly 3 passes through the first clearance groove 711 and the second clearance groove 623 and is connected to the output rod 22. In this embodiment, the guide sleeve 71 and the output rod 22 are disposed in the lower chamber 624 of the movable sleeve 62. The injection needle 21 includes a needle tip 212 at the front end, a body 213 in the middle, and a threaded portion 214 at the rear end. The threaded portion 214 is threadedly fixedly connected to the threaded hole 221 at the front end of the output rod 22, which facilitates the replacement of injection needles 21 of different sizes and models. The body 213 and the needle tip 212 extend out of the lower chamber 624 of the movable sleeve 62. The rear end of the body 213 abuts against the front end of the output rod 22. Six liquid outlet holes 211 are evenly disposed at the connection between the body 213 and the needle tip 212. The diameter is 0.3mm to prevent the liquid outlet 211 from being blocked. The body 213 adopts a structure with a small front end and a large rear end. In this way, the rear end of the body 213 can block the injection hole during injection to prevent the liquid from spraying out. The rear end of the body 213 is also provided with a limiting boss 215. The body 213 and the needle 212 in front of the limiting boss 215 are the effective parts when drilling, and the length of the effective part is 46mm. The needle 212 adopts a conical structure, and the maximum diameter of the needle 212 is no more than 5.3mm. In this way, when the injection needle 21 is withdrawn, the tree will slowly restore the injection hole, minimizing damage to the tree.

[0032] The housing assembly 7 also includes a connecting housing 72, which is fixedly connected to the rear end of the guide sleeve 71. The drill output shaft 11, input gear 51, and output gear 52 are disposed within the connecting housing 72, with the output gear 52 rotatably mounted on the connecting housing 72. The drill assembly 1 is fixedly mounted on the connecting housing 72. In this embodiment, the connecting housing 72 includes a transmission housing 721 and a connecting housing body 722, which are fixedly connected front to back and internally connected. The transmission housing 721 also has upper and lower chambers. The upper chamber 723 of the transmission housing 721 communicates with the upper chamber 621 of the movable sleeve 62, and the lower chamber 724 of the transmission housing 721 communicates with the lower chamber 624 of the movable sleeve 62. The transmission assembly 5 also includes bearings. The output gear 52 is rotatably mounted in the upper chamber 723 of the transmission housing 721 via bearings. The bearings include, but are not limited to, deep groove ball bearings or flat bearings. In this embodiment, the output gear 52 is rotatably mounted in the upper chamber 723 of the transmission housing 721 via deep groove ball bearings 57 and flat bearings 58. The rear end of the guide sleeve 71 is threadedly fixedly connected to the connecting housing 72. Inside the lower chamber 724 of the transmission housing 721, the guide sleeve 71 is provided with a stepped hole 712 communicating with the first clearance groove 711. The output rod 22 is disposed in the stepped hole 712 and has a boss 222. An elastic element 23 is disposed between the step and the boss 222 of the stepped hole 712. In this embodiment, the elastic element 23 is a spring. The rear end of the output rod 22 is provided with a groove 223. The front end of the electric drill output shaft 11 extends into the lower chamber 724, the stepped hole 712 and the groove 223 of the transmission housing 721 in sequence and contacts the inner wall of the groove 223. The electric drill output shaft 11 can rotate in the groove 223. The transmission housing 721 includes a buffer pad 725 at the front end, and the rear end of the moving sleeve 62 abuts against the buffer pad 725.

[0033] The high-pressure component 4 includes a container 41 and an injection component 42. The container 41 has a drug solution chamber 411 and an installation chamber 412 that are separated from each other. The injection component 42 is disposed in the installation chamber 412. The injection component 42 includes a drive element 421, a piston rod 422, a storage chamber, an outlet check valve 424, an inlet check valve 425, and a gearbox 9. The outlet check valve 424 connects the storage chamber and the inlet component 3. The inlet check valve 425 connects the storage chamber and the drug solution chamber 411. The drive element 421 drives the piston rod 422 to reciprocate in the storage chamber to force the drug solution in the storage chamber into the inlet component 3, or to draw the drug solution in the drug solution chamber 411 into the storage chamber. In this embodiment, the liquid inlet assembly 3 includes a liquid inlet connector 31, a first high-pressure hose 32, a water outlet connector 33, a second high-pressure hose 34, a high-pressure hose connector 35, a water inlet connector 36, and a water inlet hose 37. The output rod 22 is provided with a connecting groove 224 that communicates with both the drug injection channel 10 and the first clearance groove 711. One end of the liquid inlet connector 31 is threadedly fixed to the connecting groove 224. When the output rod 22 moves forward, the liquid inlet connector 31 moves forward along the first clearance groove 711 and the second clearance groove 623. The other end of the liquid inlet connector 31 is threadedly fixed to the first high-pressure hose 32. The container 41 is provided with a water outlet connector 33. One end of the first high-pressure hose 32 is connected to the second high-pressure hose 34 through the water outlet connector 33. The second high-pressure hose 34 is connected to the water outlet check valve 424 through the high-pressure hose connector 35. The water inlet check valve 425 is connected to the water inlet hose 37 through the water inlet connector 36. The water inlet hose 37 is connected to the drug liquid chamber 411.

[0034] The high-pressure component 4 also includes a control component (not shown), which includes a main control board 431 and a pressure detection element 432. The main control board 431 is connected to the pressure detection element 432 and the drive element 421. The liquid storage chamber includes a liquid storage chamber body 426 and a connecting chamber 427. The piston rod 422 is disposed in the liquid storage chamber body 426. A through hole 428 connects the liquid storage chamber body 426 and the connecting chamber 427. The liquid storage chamber body 426, the connecting chamber 427, and the through hole 428 are all disposed on the cavity 429. The connecting chamber 427 is connected to the outlet check valve 424 and the inlet check valve 425, respectively. The pressure detection element 432 is disposed on the connecting chamber 427 or the through hole 428. In this embodiment, the pressure detection element 432 is a pressure sensor, which is used to provide real-time feedback of the liquid pressure data on the connecting chamber 427 or the through hole 428 to the main control board when pushing or drawing liquid.

[0035] The electric drill assembly 1 also includes an electric drill body 12 connected to the electric drill output shaft 11, an electric drill connecting plate upper shell 13, and an electric drill connecting plate lower shell 14. The electric drill connecting plate upper shell 13 and the electric drill connecting plate lower shell 14 are fixedly connected and fixedly connected to the connecting shell body 722. The front part of the electric drill body 12 passes between the electric drill connecting plate upper shell 13 and the electric drill connecting plate lower shell 14 and extends into the connecting shell body 722. The rear parts of the electric drill output shaft 11, the input gear 51, and the output gear 52 are disposed in the connecting shell body 722. The front part of the electric drill body 12 is provided with an electric drill pressure cover 121, which is clamped between the electric drill connecting plate upper shell 13 and the electric drill connecting plate lower shell 14. The rear end of the electric drill output shaft 11 is provided with... The drill body 12 is housed within the drill cover 121. The drill cover 121 has a drill cap 122 at its front end. The rear of the drill body 12 extends from the rear end of the drill connecting plate upper shell 13 and the drill connecting plate lower shell 14. The rear of the drill body 12 has a drill drive structure (not shown), a drill housing (not shown), and a drill handle (not shown). The drill drive structure is located inside the drill housing. The drill drive structure can switch between two modes: electric pick and electric drill. The drill housing has a mode switching knob, a reversing switch, and a start / stop switch. The start / stop switch is located on the drill housing at the drill handle. Drills with both electric pick and electric drill modes are existing technology drills. Their specific drive structure and working principle will not be described in detail here.

[0036] The main control board 431 is installed inside the upper shell 13 or the lower shell 14 of the electric drill connecting plate. The control components also include a terminal board 433 connected to the main control board 431, a buzzer (not shown), an injection indicator light (not shown), a control board cover 434, a handle 435, an input terminal 436, a first signal line (not shown), a second signal line (not shown), and a third signal line (not shown). The terminal board 433 is installed inside the mounting cavity 412 and is connected to the pressure detection element 432 and the drive element 421. In this embodiment, the main control board 431 is housed inside the upper shell 13 of the electric drill connecting plate. The main control board 431 is equipped with a buzzer and an injection indicator light. A control board cover 434 is fixed to the upper shell 13 of the electric drill connecting plate, covering the main control board 431, the buzzer, and the injection indicator light. The injection indicator light can be seen illuminated through the control board cover 434. The control board cover 434 is equipped with an injection start button and reset buttons connected to the main control board 431. The main control board 431 is a function control PCB board, and the terminal board 433 is a terminal PCB board. A handle 435 is connected to the lower end of the lower shell 14 of the electric drill connecting plate, and an input terminal 43 is located at the lower end of the handle 435. 6. The main control board 431 is provided with a signal terminal interface 437. The signal terminal interface 437 is connected to a first signal line. The first signal line passes through the gap between the drill cover 121 and the upper shell 13 of the drill connecting plate and the gap between the drill cover 121 and the lower shell 14 of the drill connecting plate, and then passes through the wire channel (not shown) in the lower shell 14 of the drill connecting plate and the inner cavity of the handle 435 to connect to the input terminal 436. The input terminal 436 is connected to the power and signal line connector 413 on the container 41 through a second signal line. The power and signal line connector 413 is connected to the terminal board 433 through a third signal line. The terminal board 433 is connected to the pressure sensor.

[0037] The drive component 421 includes a motor 81, a planetary transmission assembly 82, a drive screw 83, and a drive screw nut 84. The planetary transmission assembly 82 connects the motor 81 and the drive screw 83. The drive screw nut 84 is screwed onto the drive screw 83. One end of the piston rod 422 away from the liquid storage chamber is fixed to the drive screw nut 84. The piston rod 422 is provided with a third clearance groove 85. Part of the drive screw 83 is disposed in the third clearance groove 85. In this embodiment, the motor 81 is a brushless motor. Brushless motors are lightweight, have less interference, lower noise, smoother operation, and longer lifespan. The drive component 421 also includes a motor drive plate 86, a nut sleeve 87, and a lead screw cover 88 connected to the motor 81. The motor drive plate 86 is connected to the terminal plate 433. The nut sleeve 87 is fitted onto the drive lead screw nut 84. The lower end of the piston rod 422 is clamped and fixed between the drive lead screw nut 84 and the nut sleeve 87. The nut sleeve 87 is threadedly fixed onto the piston rod 422. The lead screw cover 88 is disposed outside the nut sleeve 87 and the piston rod 422. The nut sleeve 87 is fixedly connected to the cavity 429, and a positioning ring 89 is provided between the nut sleeve 87 and the cavity 429. The planetary transmission assembly 82 is provided with... The gearbox 81 is located inside the gearbox 9, which has a gearbox cover 91. The gearbox 9 and the lead screw cover 88 are fixedly connected by a connecting plate 90. The motor 81 is fixed on the connecting plate 90. The planetary transmission assembly 82 includes motor teeth 821 on the motor shaft of the motor 81, a secondary gear 822 meshing with the motor teeth 821, a connecting shaft 823 connected with the secondary gear 822, a tertiary gear 824 meshing with the connecting shaft 823, a sun gear 825 connected with the tertiary gear 824, a planet gear 826 meshing with the sun gear 825, a planet carrier 827 supporting the planet gear 826, and a locking screw 828. The planet carrier 827 is fixedly connected to the drive lead screw 83 by the locking screw 828.

[0038] The injection assembly 42 also includes a sensing assembly 92, which includes a first sensor 921, a second sensor 922, and a travel rod 923 fixed to the drive screw nut 84. The first sensor 921 and the second sensor 922 are connected to the motor 81 and the terminal plate 433. The travel rod 923 is fixed to the nut sleeve 87 and moves between the first sensor 921 and the second sensor 922. When the second sensor 922 senses the travel rod 923 approaching, the motor 81 changes direction; when the first sensor 921 senses the travel rod 923 approaching, the motor 81 stops working. In this embodiment, the first sensor 921 and the second sensor 922 are respectively a first Hall sensor and a second Hall sensor. See [link to documentation]. Figure 6In the direction of the screw, the screw cover 88 is provided with a vertically extending through groove 881, the stroke rod 923 extends out of the through groove 881 and can move along the through groove 881, the first Hall sensor is fixed on the outer wall of the screw cover 88 on the lower side of the through groove 881, and the second Hall sensor is fixed on the outer wall of the screw cover 88 on the upper side of the through groove 881.

[0039] In this embodiment, the container 41 is a backpack water bottle, and the injection device also includes a shoulder strap (not shown), which is fixed to the container 41. The container 41 includes an upper part (not shown) and a lower part (not shown). The liquid chamber 411 is located in the upper part of the container, and the capacity of the liquid chamber 411 can reach 2.5L. The top of the upper part of the container is provided with a liquid inlet (not shown), and a knob cover 93 is provided on the liquid inlet. After the liquid chamber 411 is filled through the liquid inlet, 150 trees can be continuously injected. The installation cavity 412 includes an upper installation cavity provided on the upper side wall of the container. The upper mounting cavity (not shown) and the lower mounting cavity (not shown) are located in the lower part of the container. The upper mounting cavity and the lower mounting cavity are connected. The injection assembly 42 is fixed in the upper mounting cavity. The cavity 429 extends downward into the lower mounting cavity. The terminal board 433 and the motor drive board 86 are fixed in the lower mounting cavity. The battery 100 is also fixed in the lower mounting cavity. In this embodiment, the battery 100 is preferably a lithium battery. Lithium batteries have long battery life, low noise, small size, and light weight. The battery 100 supplies power to the main control board 431, the terminal board 433, the motor 81, the motor drive board 86, the first Hall sensor, and the second Hall sensor. The main control board 431 is connected to the battery 100 via segmented power cables (not shown). The power cables are connected to power and signal line connectors 413 and input terminals 436. The power cable routing outside the container 41 is the same as the routing of the first and second signal lines. A power switch 414 and a charging port 415 connected to the battery 100 are located on the lower side wall of the container on one side of the battery 100. The battery 100 is charged through the charging port 415, and a single charge provides 7-8 hours of use. The lower side wall of the container also has a connection to the battery 100. The power display screen (not shown), the water outlet connector 33 and the power and signal line connector 413 are located on the lower side wall of the container opposite to the power switch 414 and the charging port 415. A power connector (not shown) is also provided on the lower side wall of the container on the side of the power and signal line connector 413. The lithium battery is connected to the battery pack (not shown) at the rear bottom of the drill body 12 through the power connector. The input terminal 436 is an 8P terminal. The first signal line and the second signal line are 8P cables located outside the container 41, and the third signal line is an 8P terminal cable located inside the container 41.

[0040] The injection device in this embodiment is a backpack-type tree drilling and injection integrated machine. During operation, the operator first carries a backpack and water bottle on their back with the shoulder strap, holds the electric drill handle and handle 435, turns on the power switch 414 on the backpack and water bottle, then switches the mode switching knob on the electric drill housing to electric pick mode, and then presses the start / stop switch to start the electric drill. The electric drill output shaft 11 strikes the output rod 22 forward, and the output rod 22 drives the needle 212 and the body 213 of the injection needle 21 to strike the tree trunk, making an injection hole in the tree trunk. At this time, the spring is compressed by the output rod 22 to store elastic potential energy. It should be noted that during the process of the injection needle 21 striking the tree trunk, the operator needs to push the hand-held end (electric drill assembly 1, drilling assembly 2, liquid inlet assembly 3, transmission assembly 5, ejection assembly 6 and housing assembly 7) forward together, so that the front end of the moving sleeve 62 abuts against the tree trunk while the injection needle 21 strikes the tree trunk, so that the injection needle 21 can be ejected from the tree trunk later.

[0041] After the injection needle 21 is inserted into the tree trunk, the injection start button on the control panel cover 434 is pressed to start the injection program. When the injection program starts, the injection indicator light illuminates and the buzzer sounds once. The main control board 431 controls the motor 81 to start through the terminal board 433 and the motor drive board 86. The motor 81 rotates forward and drives the drive screw 83 to rotate forward through the planetary transmission assembly 82. The drive screw nut 84 converts the rotation into linear motion, driving the piston rod 422 forward. The piston rod 422 pushes the liquid in the liquid storage chamber 426 through the through hole 428 to the connecting chamber 427, and then through the outlet check valve 424 (at this time, the outlet check valve 424 is open and the inlet check valve 425 is closed) and the high-pressure hose connector 35 into the second high-pressure hose 34, the first high-pressure hose 32 and the liquid inlet connector 31, flowing into the injection channel 10 in the output rod 22 and the injection needle 21. Finally, the liquid flows out from the liquid outlet hole 211. As the drug enters the tree, during the above process, the stroke rod 923 moves forward with the piston rod 422. When the stroke rod 923 approaches the second Hall sensor (at which point the injection pressure reaches the set value, which is 12 MPa in this embodiment), the second Hall sensor senses and drives the motor 81 to reverse. At this time, the buzzer sounds again, the piston rod 422 finishes pushing the liquid and begins to draw the liquid. The motor 81 reverses and drives the piston rod 422 to move backward. The pressure generated when the piston rod 422 moves backward draws the liquid in the liquid chamber into the liquid storage chamber body 426 through the water inlet hose 37 and the water inlet check valve 425 (at this time, the water inlet check valve 425 is open and the water outlet check valve 424 is closed). When the liquid drawing is finished, the stroke rod 923 approaches the first Hall sensor 921. The first Hall sensor senses and drives the motor 81 to stop working, completing one injection cycle. At this time, the buzzer sounds one last time and the injection indicator light goes out.

[0042] After the injection is completed, switch the mode switching knob on the drill housing to the drill mode and switch the reversing switch to the forward rotation direction of the drill. Then, press and hold the start / stop switch to start the drill. The output shaft 11 of the drill rotates, which drives the input gear 51 to rotate. The input gear 51 drives the lead screw 53 to rotate forward through the output gear 52. The lead screw nut 61 converts the rotational motion into linear motion. The lead screw nut 61 drives the moving sleeve 62 to move forward in a linear motion along the guide sleeve 71, pushing the injection needle 21 out of the tree trunk. When the limit protrusion 622 reaches the limit part 551 of the limit screw 55, the moving sleeve 62 stops moving forward to complete the pushing action. The drill assembly 1 stops working, and the injection needle 21 is completely withdrawn from the tree trunk. At this time, the injection needle 21, the output rod 22, the liquid inlet assembly 3 and the output shaft 11 of the drill move backward together under the action of the spring releasing elastic potential energy to achieve reset.

[0043] Switch the reversing switch to the reverse direction of the drill, then press and hold the start / stop switch to turn on the drill. The output shaft 11 of the drill rotates, driving the input gear 51 to rotate. The input gear 51 drives the lead screw 53 to reverse through the output gear 52. The lead screw nut 61 converts the rotary motion into linear motion. The lead screw nut 61 drives the moving sleeve 62 to move backward in a linear motion along the guide sleeve 71. When the rear end of the moving sleeve 62 reaches the buffer pad 725, the moving sleeve 62 resets, the drill assembly 1 stops working, and the front part of the injection needle 21 re-exposes the front end of the moving sleeve 62.

[0044] This embodiment of the integrated drilling and injection machine uses the high thrust of the electric drill assembly 1 in electric hammer mode to directly drive the injection needle 21 into the tree trunk. Drilling can be completed in less than ten seconds, with a maximum drilling depth of 46mm. No sawdust is discharged during drilling, so there is no environmental pollution. Drilling and injection are integrated, and there is no need to change the needle 212 during injection. A brushless motor drives the piston rod 422 to inject the liquid into the tree trunk. The injection process only takes 1-3 minutes. The liquid is injected into the tree trunk under high pressure, with a maximum injection pressure of 12Mpa (the injection pressure can be set according to the size, hardness, and bark thickness of the tree, and is set by controlling the operation of the motor 81 through the main control board 431). The injection volume is 15ml at a time (the injection volume can be set according to the actual injection needs, and is set by setting the size of the liquid storage chamber body 426). It directly penetrates into the tree, accurately and quantitatively, with less liquid used and no waste. The brushless motor and lithium battery are lightweight and have low noise during operation.

[0045] This invention utilizes the electric drill output shaft 11 in electric hammer mode to strike the drilling assembly 2 forward, causing the injection needle 21 to be driven into the tree to create a hole. The high thrust of the electric drill output shaft 11 directly drives the injection needle 21 into the tree, resulting in fast drilling speed and simple operation. The striking method also allows for the use of a small-diameter needle tip 212 in the injection needle 21. After the injection needle 21 is withdrawn, the tree slowly recovers the injection hole, minimizing damage to the tree. The liquid inlet assembly 3 connects the drilling assembly 2 and the high-pressure assembly 4. Both the liquid inlet assembly 3 and the drilling assembly 2 have interconnected injection channels 10. After the injection needle 21 is driven into the tree to create a hole, the high-pressure assembly 4 injects liquid medicine into the injection channel 10. The liquid medicine flows out from the outlet hole 211 into the tree, completing the injection. This integrates drilling and injection, simplifying the drilling and injection operation and increasing work efficiency.

[0046] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A drug injection device, characterized in that, The injection device comprises an electric drill assembly (1), a punching assembly (2), a liquid inlet assembly (3) and a high-pressure assembly (4), the electric drill assembly (1) comprises an electric drill output shaft (11), the punching assembly (2) is connected with the electric drill output shaft (11) front and back, the punching assembly (2) comprises a medicine injection needle (21) at the front end, the electric drill assembly (1) is provided with an electric pick mode, and in the electric pick mode, the electric drill output shaft (11) knocks the punching assembly (2) forward, so that the medicine injection needle (21) is knocked into the tree forward to punch a hole, the liquid inlet assembly (3) is connected with the punching assembly (2) and the high-pressure assembly (4), the liquid inlet assembly (3) and the punching assembly (2) are provided with a medicine injection channel (10) connected with each other, and the high-pressure assembly (4) is used for injecting liquid medicine into the medicine injection channel (10). The injection device further comprises a transmission assembly (5) and an ejection assembly (6), the transmission assembly (5) is connected with the electric drill output shaft (11) and the ejection assembly (6), the electric drill assembly (1) is provided with an electric drill mode, and in the electric drill mode, the electric drill output shaft (11) rotates and drives the ejection assembly (6) to move forward through the transmission assembly (5), and the ejection assembly (6) ejects the medicine injection needle (21) from the tree by pressing the tree. The transmission assembly (5) comprises an input gear (51), an output gear (52) and a lead screw (53), the input gear (51) is fixedly sleeved on the electric drill output shaft (11), the input gear (51) is engaged with the output gear (52) and can move forward and backward relative to each other, the output gear (52) is fixedly connected with the lead screw (53), the ejection assembly (6) comprises a lead screw nut (61) and a moving sleeve (62), the lead screw nut (61) is threadedly connected with the lead screw (53) and fixedly connected with the moving sleeve (62), the front part of the medicine injection needle (21) extends out of the moving sleeve (62), and the front end of the medicine injection needle (21) is provided with a liquid outlet hole (211) in communication with the medicine injection channel (10).

2. The medicine injection device of claim 1, wherein Further comprising a shell assembly (7), the shell assembly (7) comprises a guide sleeve (71) arranged in the moving sleeve (62), the punching assembly (2) further comprises an output rod (22) and an elastic member (23) movably arranged in the guide sleeve (71), the front end of the output rod (22) is fixedly connected with the medicine injection needle (21), the rear end of the output rod (22) is in contact with the front end of the electric drill output shaft (11), the elastic member (23) is arranged between the output rod (22) and the guide sleeve (71), the guide sleeve (71) is provided with a first avoiding groove (711), the moving sleeve (62) is provided with a second avoiding groove (623), and one end of the liquid inlet assembly (3) passes through the first avoiding groove (711) and the second avoiding groove (623) and is connected with the output rod (22).

3. The medicine injection device of claim 2, wherein, The shell assembly (7) further comprises a connecting shell (72) fixedly connected with the rear end of the guide sleeve (71), the electric drill output shaft (11), the input gear (51) and the output gear (52) are arranged in the connecting shell (72), the output gear (52) is rotatably arranged on the connecting shell (72), and the electric drill assembly (1) is fixed on the connecting shell (72).

4. The medicine injection device of claim 1, wherein, The high-pressure assembly (4) comprises a container (41) and an injection assembly (42), the container (41) is provided with a spaced-apart medicine liquid cavity (411) and a mounting cavity (412), the injection assembly (42) is arranged in the mounting cavity (412), the injection assembly (42) comprises a driving member (421), a piston rod (422), a liquid storage cavity, a water outlet one-way valve (424) and a water inlet one-way valve (425), the water outlet one-way valve (424) is connected with the liquid storage cavity and the liquid inlet assembly (3), the water inlet one-way valve (425) is connected with the liquid storage cavity and the medicine liquid cavity (411), and the driving member (421) drives the piston rod (422) to reciprocate in the liquid storage cavity, so that the medicine liquid in the liquid storage cavity is pressed into the liquid inlet assembly (3), or the medicine liquid in the medicine liquid cavity (411) is sucked into the liquid storage cavity.

5. The medicine injection device of claim 4, wherein, The high-pressure assembly (4) further comprises a control assembly, the control assembly comprises a main control board (431) and a pressure detection member (432), the main control board (431) is connected with the pressure detection member (432) and the driving member (421), the liquid storage cavity comprises a liquid storage cavity body (426) and a connecting cavity (427), the piston rod (422) is arranged in the liquid storage cavity body (426), a through hole (428) is connected between the liquid storage cavity body (426) and the connecting cavity (427), the connecting cavity (427) is connected with the water outlet one-way valve (424) and the water inlet one-way valve (425) respectively, and the pressure detection member (432) is arranged on the connecting cavity (427) or the through hole (428).

6. The medicine injection device of claim 5, wherein, The electric drill assembly (1) further comprises an electric drill body (12) connected with the electric drill output shaft (11), an electric drill connecting plate upper shell (13) and an electric drill connecting plate lower shell (14), the electric drill connecting plate upper shell (13) and the electric drill connecting plate lower shell (14) are fixedly connected, the front part of the electric drill body (12) passes through between the electric drill connecting plate upper shell (13) and the electric drill connecting plate lower shell (14), the main control board (431) is arranged in the electric drill connecting plate upper shell (13) or the electric drill connecting plate lower shell (14), and the control assembly further comprises a terminal plate (433) connected with the main control board (431).

7. The medicine injection device of claim 4, wherein, The driving member (421) comprises a motor (81), a planetary transmission assembly (82), a driving screw (83) and a driving screw nut (84), the planetary transmission assembly (82) is connected with the motor (81) and the driving screw (83), the driving screw nut (84) is screwed on the driving screw (83), one end of the piston rod (422) away from the liquid storage cavity is fixed on the driving screw nut (84), the piston rod (422) is provided with a third avoiding slot (85), and the driving screw (83) is partially arranged in the third avoiding slot (85).

8. The medicine injection device of claim 7, wherein, The injection assembly (42) further comprises a sensing assembly (92), the sensing assembly (92) comprises a first sensor (921), a second sensor (922) and a stroke rod (923) fixed on the driving screw nut (84), the first sensor (921) and the second sensor (922) are connected with the motor (81), the stroke rod (923) moves between the first sensor (921) and the second sensor (922), when the second sensor (922) senses that the stroke rod (923) is close, the motor (81) changes the steering direction, and when the first sensor (921) senses that the stroke rod (923) is close, the motor (81) stops working.

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