An injection type automatic fertilizer applicator

Abstract

The application discloses an injection type automatic fertilization device, which comprises a walking vehicle, a liquid storage tank and a fertilization mechanism.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to an injection-type automatic fertilizer applicator. Background Technology

[0002] Solid fertilizers must dissolve into a liquid before being absorbed by crops, while liquid fertilizers can be directly absorbed, eliminating the dissolution process and increasing absorption speed. After being applied to the soil, the effective nutrients in liquid fertilizers reach the crop roots directly, bypassing the slow chemical dissolution process and significantly reducing the amount of nutrients locked in the soil. Therefore, the fertilizer efficiency of liquid compound fertilizers is equivalent to three times that of solid fertilizers, significantly improving fertilizer utilization. This not only reduces the amount of chemical fertilizer used but also lowers application costs, labor costs, and pollution to people, crops, and the environment. Furthermore, liquid fertilizer formulations are precisely controllable, with a balanced and uniform distribution of nutrients, making application simple and convenient, particularly suitable for mechanized application and large-scale production.

[0003] However, current liquid fertilizers are typically applied to the soil surface. Due to natural factors such as wind and sunlight, some active substances or microorganisms in them become inactive, greatly reducing fertilizer utilization and increasing costs without achieving the desired results. Furthermore, the application of this fertilizer requires a significant amount of labor, and the amount that can be carried and applied at one time is severely limited, resulting in low efficiency.

[0004] Therefore, there is an urgent need to design an injection-type automatic fertilization device to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes an injection-type automatic fertilizer application device.

[0006] To achieve the above objectives, the present invention provides an injection-type automatic fertilizer applicator, comprising:

[0007] A traveling vehicle, wherein a traveling component is installed at the bottom of the traveling vehicle;

[0008] A liquid storage tank, which is fixedly installed on the traveling vehicle;

[0009] The fertilization mechanism includes a support frame fixedly mounted on the traveling vehicle. A plurality of external injection tubes are slidably connected to the support frame. A first drive assembly is driven between the external injection tubes and the support frame. An internal injection tube communicating with a liquid storage tank is slidably sealed inside each external injection tube. The internal injection tube is drivenly connected to a second drive assembly fixedly mounted on the first drive assembly. A liquid outlet head is fixedly mounted at the bottom end of each external injection tube. The liquid outlet head is detachably connected to and communicates with the bottom end of the inner cavity of the external injection tube.

[0010] Preferably, the dispensing head includes a mounting base fixedly installed at the bottom end of the inner injection tube. The mounting base has a through-hole, and the side wall of the through-hole has a plurality of dispensing holes communicating with the inner cavity of the outer injection tube. A sliding block is slidably sealed inside the through-hole. The top end of the sliding block has a liquid inlet hole, and the bottom side wall of the liquid inlet hole has a connecting hole corresponding to the dispensing hole. The dispensing hole and the connecting hole are detachably connected.

[0011] Preferably, a positioning ring is fixedly connected to the top of the sliding block, and a plurality of locking springs are fixedly connected between the positioning ring and the top of the mounting base; a contact plate is fixedly connected to the bottom of the sliding block, and the bottom of the contact plate is detachably connected to the bottom of the inner cavity of the external injection tube; a filter screen is fixedly installed on the top tube of the liquid inlet hole, and the filter screen is fixedly connected to the top of the positioning ring.

[0012] Preferably, the side wall of the external injection tube is provided with a plurality of fertilizer holes, the fertilizer holes are connected to the bottom end of the inner cavity of the external injection tube, and a self-closing component is detachably connected to the fertilizer holes; the bottom end of the external injection tube passes through the traveling vehicle and is fixedly connected to a drill bit.

[0013] Preferably, the self-closing component includes a self-closing groove formed on the side wall of the external injection tube and corresponding to the fertilizer hole. The bottom end of the self-closing groove has a communicating groove, and the bottom end of the communicating groove has a clearance groove communicating with the top end of the fertilizer hole. A self-closing plate corresponding to the fertilizer hole is slidably connected in the clearance groove, and the self-closing plate is detachably connected to the fertilizer hole. A connecting rod is fixedly connected to the top end of the self-closing plate, and the connecting rod is slidably connected in the communicating groove and extends into the self-closing groove. A fixing ring is fixedly connected to the outer wall of the connecting rod, and a positioning plate is fixedly connected to the outer wall of the fixing ring. The positioning plate extends out of the self-closing groove.

[0014] Preferably, the support frame includes a plurality of support columns fixedly connected to the traveling vehicle, the first drive assembly includes a first lifting plate slidably connected between the plurality of support columns, and the top ends of a plurality of external injection tubes are arrayed and fixedly connected to the bottom end of the first lifting plate; a plurality of first telescopic rods are fixedly connected to the top end of the first lifting plate, and a fixing plate is fixedly connected to the fixed end of the plurality of first telescopic rods, the fixing plate being fixedly connected between the plurality of support columns; a first spring is fixedly connected between the first lifting plate and the traveling vehicle, and the first spring is sleeved on the support columns.

[0015] Preferably, the second driving assembly includes a second telescopic rod fixed to the bottom end of the first lifting plate, a second lifting plate fixed to the top end of a plurality of second telescopic rods, the top end array of the inner injection tubes fixed to the bottom end of the second lifting plate, the outlet of the liquid storage tank passing through the second lifting plate and communicating with the inner cavities of a plurality of the inner injection tubes respectively; a plurality of second springs are fixed between the first lifting plate and the second lifting plate, and the second springs are sleeved on the outside of the inner injection tubes.

[0016] Preferably, a dispensing tank is fixedly connected to the bottom end of the fixed plate, and the dispensing tank is connected to the storage tank; a plurality of elastic tubes corresponding to the top tube of the inner injection tube are fixedly connected to and connected to the bottom end of the dispensing tank, and the bottom end of the elastic tube passes through the second lifting plate and is connected to the inner injection tube.

[0017] Preferably, the vehicle includes a body, the liquid storage tank and the support frame are respectively fixed to the body; a walking component is provided at the bottom of the body; a control component is provided at the end of the body facing the liquid storage tank, the control component is electrically connected to the liquid storage tank, the first telescopic rod and the bottom second telescopic rod, and the control component is electrically connected to the walking component.

[0018] Preferably, a plurality of hook teeth arranged side by side are fixedly installed at the end of the traveling vehicle away from the liquid storage tank, and the bottom end of the hook teeth is not lower than the bottom end of the traveling component.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects: The device of the present invention has an inner injection tube and an outer injection tube structure, which can automatically inject liquid fertilizer directly into the ground, solving the loss caused by applying liquid fertilizer to the ground; at the same time, the device can also liberate labor, effectively control the amount and depth of fertilizer application with a more controllable injection fertilization method, solve the randomness of traditional farmland fertilization, and improve the standardization and controllability of agricultural cost calculation; in use, liquid fertilizer is placed in the storage tank, and the device is driven to the desired fertilization location by a mobile vehicle, and then the liquid fertilizer is pumped into the inner injection tube; the first drive component drives the outer injection tube to insert into the ground to a specified depth, and then the second drive component drives the inner injection tube to slide, so that the liquid fertilizer inside it enters the outer injection tube through the liquid outlet and is injected into the ground. After the injection is completed, the liquid fertilizer in the inner injection tube is stopped from being injected into the outer injection tube, and then the outer injection tube is pulled out. Then the device is moved to the next fertilization location and the above fertilization steps are repeated; the second drive component combined with the liquid outlet is used to control the liquid fertilizer in the inner injection tube to enter the outer injection tube.

[0020] This invention reduces the loss of liquid fertilizer during the fertilization process, improves the utilization rate of liquid fertilizer, increases the efficiency of fertilization, improves the accuracy of fertilization, and reduces the amount of labor involved in fertilization. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is an axial view of the injection-type automatic fertilizer applicator of the present invention;

[0023] Figure 2 This is a side view of the injection-type automatic fertilizer applicator of the present invention;

[0024] Figure 3 This is a bottom view of the injection-type automatic fertilizer applicator of the present invention;

[0025] Figure 4 This is a schematic diagram of the liquid storage tank structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 A magnified view of part A in the image;

[0027] Figure 6 This is a schematic diagram of the external injection tube structure of the present invention;

[0028] Figure 7 For the present invention Figure 6 A magnified view of part B in the image;

[0029] Figure 8 This is a schematic diagram of the self-closing component structure of the present invention;

[0030] In the diagram: 1. Walking vehicle; 2. Liquid storage tank; 3. Fertilizer application mechanism; 11. Vehicle body; 12. Hook gear; 13. Drive motor; 14. Gearbox; 15. Drive wheel; 16. Driven wheel; 17. Track; 18. Handrail; 19. Control panel; 110. Speed ​​controller; 111. Battery; 112. Control module; 21. Agitator motor; 22. Agitator shaft; 23. Agitator rod; 24. Inlet; 25. Liquid outlet pipe; 26. Liquid outlet pump; 27. Conveying pipe; 28. Transmission hole; 29. ​​Transmission head; 210. Sealed bearing; 211. Guide ring; 31. External injection tube; 32. Internal injection tube; 33. Liquid outlet head; 34. Mounting base; 35. Receiving hole; 36. Liquid outlet hole; 37. Sliding... 38. Moving block; 39. Liquid inlet hole; 310. Connecting hole; 311. Positioning ring; 312. Locking spring; 313. Contact plate; 314. Filter screen; 315. Fertilizer inlet; 316. Drill bit; 317. Self-closing groove; 318. Connecting groove; 319. Leaving groove; 320. Self-closing plate; 321. Connecting rod; 322. Fixing ring; 323. Positioning plate; 324. Positioning bolt; 325. Sleeve; 326. Third spring; 327. Support column; 328. First lifting plate; 329. First telescopic rod; 330. Fixing plate; 331. First spring; 332. Second telescopic rod; 333. Second lifting plate; 334. Separating tank; 335. Elastic tube. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-8 As shown, this embodiment provides an injection-type automatic fertilizer applicator, comprising:

[0034] The traveling vehicle 1 has a traveling component installed at its bottom.

[0035] Liquid storage tank 2 is fixedly installed on the traveling vehicle 1;

[0036] The fertilization mechanism 3 includes a support frame fixedly installed on the traveling vehicle 1. Several external injection tubes 31 are slidably connected to the support frame. A first drive assembly is driven between the external injection tubes 31 and the support frame. An internal injection tube 32, which communicates with the liquid storage tank 2, is slidably sealed inside the external injection tubes 31. The internal injection tube 32 is driven by a second drive assembly fixedly installed on the first drive assembly. A liquid outlet head 33 is fixedly installed at the bottom end of the external injection tubes 31. The liquid outlet head 33 is detachably connected to and communicates with the bottom end of the inner cavity of the external injection tubes 31.

[0037] The device of this invention, with its inner injection tube 32 and outer injection tube 31, can automatically inject liquid fertilizer directly into the ground, solving the problem of losses caused by applying liquid fertilizer to the ground. Simultaneously, this device can free up labor, effectively controlling the amount and depth of fertilizer application through a more controllable injection fertilization method, overcoming the randomness of traditional farmland fertilization, and improving the standardization and controllability of agricultural cost calculation. In use, liquid fertilizer is placed in the storage tank 2, and the device is moved to the desired fertilization location by the mobile vehicle 1, then the liquid fertilizer is pumped into the inner injection tube 32. The first drive assembly drives the outer injection tube 31 to be inserted into the ground at a specified depth. Then, the second drive assembly drives the inner injection tube 32 to slide, so that the liquid fertilizer inside it enters the outer injection tube 31 through the outlet head 33 and is injected into the ground. After the injection is completed, the liquid fertilizer in the inner injection tube 32 is stopped from being injected into the outer injection tube 31. Then, the outer injection tube 31 is pulled out and moved to the next fertilization location. The above fertilization steps are repeated. The second drive assembly, combined with the outlet head 33, is used to control the liquid fertilizer in the inner injection tube 32 to enter the outer injection tube 31.

[0038] Further optimizing the design, the dispensing head 33 includes a mounting base 34 fixedly installed at the bottom end of the inner injection tube 32. A receiving hole 35 is formed through the mounting base 34, and several dispensing holes 36 communicating with the inner cavity of the outer injection tube 31 are formed through the side wall of the receiving hole 35. A sliding block 37 is slidably connected within the receiving hole 35, with an inlet hole 38 at its top. A connecting hole 39, corresponding to the dispensing holes 36, is formed through the bottom side wall of the inlet hole 38. The dispensing holes 36 and the connecting holes 39 are detachably connected. The mounting base 34 installs the dispensing head 33 to the bottom end of the inner injection tube 32. When dispensing is required, the sliding block 37 slides down within the receiving hole 35, aligning the connecting hole 39 with the dispensing holes 36. The liquid fertilizer in the inner injection tube 32 enters the inlet hole 38 and then flows through the dispensing holes 36 into the inner cavity of the outer injection tube 31.

[0039] Further optimization of the design: a positioning ring 310 is fixedly connected to the top of the sliding block 37, and several locking springs 311 are fixedly connected between the positioning ring 310 and the top of the mounting base 34; a contact plate 312 is fixedly connected to the bottom of the sliding block 37, and the bottom of the contact plate 312 is detachably connected to the bottom of the inner cavity of the outer injection tube 31; a filter screen 313 is fixedly installed on the top tube of the liquid inlet hole 38, and the filter screen 313 is fixedly connected to the top of the positioning ring 310. The bottom of the sliding block 37 contacts the bottom of the inner cavity of the outer injection tube 31 and is pushed upward to block the liquid outlet head 33; when liquid needs to be discharged, the inner injection tube 32 slides upward, and the locking springs 311 pull the block down through the positioning ring 310 to achieve liquid discharge; the filter screen 313 has a convex structure to filter liquid fertilizer.

[0040] Further optimizing the design, the side wall of the external injection tube 31 is provided with several fertilizer application holes 314, which are connected to the bottom end of the inner cavity of the external injection tube 31. A self-closing component is detachably connected inside the fertilizer application hole 314. The bottom end of the external injection tube 31 passes through the traveling vehicle 1 and is fixedly connected to a drill bit 315. The drill bit 315 facilitates the insertion of the external injection tube 31 into the ground for fertilization under the drive of the first drive component. The self-closing component is used to lock the fertilizer application holes 314, reducing leakage on the ground and reducing waste.

[0041] In a further optimized design, the self-closing component includes a self-closing groove 316 located on the side wall of the outer injection tube 31 and corresponding to the fertilizer hole 314. A connecting groove 317 is located at the bottom of the self-closing groove 316, and a clearance groove 318 is located at the bottom of the connecting groove 317, communicating with the top of the fertilizer hole 314. A self-closing plate 319, corresponding to the fertilizer hole 314, is slidably connected within the clearance groove 318. The self-closing plate 319 is detachably connected to the fertilizer hole 314. A connecting rod 320 is fixedly connected to the top of the self-closing plate 319, and the connecting rod 320 is slidably connected within the connecting groove 317 and extends into the self-closing groove 316. A fixing ring 321 is fixedly connected to the outer wall of the connecting rod 320, and a positioning plate 322 is fixedly connected to the outer wall of the fixing ring 321, extending out of the self-closing groove 316. When the external injection tube 31 is inserted into the ground, the positioning plate 322 contacts the ground and is forced to rise the self-closing plate 319, opening the fertilization hole 314 and allowing the liquid fertilizer in the external injection tube 31 to be introduced into the soil; when the fertilization is completed, the external injection tube 31 is pulled out, the positioning plate 322 separates from the ground, and the self-closing plate 319 returns to its original position.

[0042] Furthermore, a sleeve 324 corresponding to the connecting rod 320 is fixedly connected to the top of the self-closing groove 316. The top tube of the connecting rod 320 extends into the sleeve 324 and is slidably connected to the sleeve 324. A third spring 325 is fixedly connected between the top of the connecting rod 320 and the sleeve 324. When the fertilizer hole 314 is opened, the third spring 325 is deformed by pressure. When the external injection tube 31 is pulled out of the ground, the third spring 325 resets and pushes the self-closing plate 319 to reseal the fertilizer hole 314.

[0043] Furthermore, the side wall of the positioning plate 322 is threaded with a positioning bolt 323. The positioning bolt 323 passes through the fixing ring 321 and abuts against the connecting rod 320, which can adjust the height of the fixing ring 321 in the self-closing groove 316 and control the depth of fertilization.

[0044] A further optimized design includes a support frame comprising several support columns 326 fixedly attached to the traveling vehicle 1. A first drive assembly includes a first lifting plate 327 slidably connected between the support columns 326. The top ends of several external injection tubes 31 are arrayed and fixedly attached to the bottom end of the first lifting plate 327. Several first telescopic rods 328 are fixedly attached to the top of the first lifting plate 327, and fixed plates 329 are fixedly attached to the fixed ends of the first telescopic rods 328. The fixed plates 329 are fixed between the support columns 326. A first spring 330 is fixedly connected between the first lifting plate 327 and the traveling vehicle 1, and the first spring 330 is sleeved on the support columns 326. The several first telescopic rods 328 drive the external injection tubes 31 to rise and fall via the lifting plate, allowing the injection tubes to inject liquid fertilizer into the ground. The first spring 330 assists in the reset of the first lifting plate 327. Simultaneously, a second drive assembly is installed on a first movable plate, which can move the internal injection tube 32 along with it.

[0045] In a further optimized design, the second drive assembly includes a second telescopic rod 331 fixed to the bottom of the first lifting plate 327. A second lifting plate 332 is fixed to the top of several second telescopic rods 331. The top of the inner injection tubes 32 is arrayed and fixed to the bottom of the second lifting plate 332. The outlet of the storage tank 2 passes through the second lifting plate 332 and communicates with the inner cavities of several inner injection tubes 32. Several second springs 333 are fixed between the first lifting plate 327 and the second lifting plate 332, and are sleeved around the inner injection tubes 32. The second telescopic rods 331 drive several inner injection tubes 32 to slide within the inner cavity of the outer injection tube 31 via the second lifting plate 332, thereby controlling the opening and closing of the liquid outlet head 33 and injecting the liquid fertilizer from the inner injection tubes 32 into the outer injection tube 31. The second springs 333 assist in the resetting of the second lifting plate 332.

[0046] In a further optimized design, a dispensing tank 334 is fixedly connected to the bottom end of the fixed plate 329, and the dispensing tank 334 is connected to the storage tank 2. Several elastic tubes 335, corresponding to the top tube of the inner injection tube 32, are fixedly connected and connected to the bottom end of the dispensing tank 334. The bottom ends of the elastic tubes 335 pass through the second lifting plate 332 and are connected to the inner injection tube 32. The liquid fertilizer in the storage tank 2 is pumped into the dispensing tank 334, and then pumped into the inner injection tube 32 through the elastic tubes 335. The purpose of the elastic tubes 335 is to ensure that the second lifting plate 332 remains connected during the lifting process.

[0047] Further optimization of the design: the mobile vehicle 1 includes a body 11, with a liquid storage tank 2 and a support frame fixedly attached to the body 11. A walking assembly is installed at the bottom of the body 11. A control assembly is installed at the end of the body 11 facing the liquid storage tank 2. The control assembly is electrically connected to the liquid storage tank 2, the first telescopic rod 328, and the second telescopic rod 331, and is also electrically connected to the walking assembly. The walking assembly includes a drive motor 13 fixedly installed at the bottom of the body 11. The drive motor 13 is a dual-head motor, with its two output heads respectively connected to the input end of a gearbox 14. The output end of the gearbox 14 is respectively connected to drive wheels 15. A driven wheel 16 is also installed at the bottom of the body 11, and a track 17 is connected between the drive wheel and the driven wheel 16. The track 17 also improves the stability of the movement, enhances the passability, and expands the applicability range.

[0048] The control assembly includes a handrail 18 mounted on the vehicle body 11, which is height-adjustable to suit different users. A control board 19 on the handrail 18 facilitates equipment operation control. The control assembly also includes a battery 111 fixedly mounted on a mounting plate 329, electrically connected to a control module 112. The control module 112 is a programmable PLC, a common control element. The control board 19 is electrically connected to the control module 112 for easy control. The control module 112 controls the movement of the walking assembly and provides a more controllable injection fertilization method, effectively controlling the amount and depth of fertilizer application. This solves the randomness of traditional farmland fertilization and improves the standardization and controllability of agricultural cost calculation. Two speed controllers 110 on the handrail 18 control the output speed and direction of the two gearboxes 14, thereby controlling the rotation speed and steering of the tracks 17 on both sides, thus controlling the walking assembly. The principle is similar to that of a tank or excavator, and will not be elaborated here.

[0049] In a further optimized design, a number of parallel hook teeth 12 are fixedly installed at the end of the traveling vehicle 1 furthest from the liquid storage tank 2, with the bottom of the hook teeth 12 not lower than the bottom of the traveling component. The hook teeth 12 can clear away debris at the front of the device as it moves forward, preventing obstruction of the fertilization process.

[0050] Furthermore, a stirring motor 21 is fixedly installed at the bottom of the vehicle body 11. The output shaft of the stirring motor 21 is connected to the stirring shaft 22 rotatably connected in the storage tank 2. The stirring shaft 22 drives the stirring rod 23 to stir the fertilizer in the storage tank 2, thereby improving uniformity. The side wall of the storage tank 2 is provided with a feed port 24, which can be used to put in the mixed liquid fertilizer or to pour in solid fertilizer for preparation.

[0051] Furthermore, the bottom of the storage tank 2 is inclined, and its lower end is connected to the outlet pipe 25. The outlet pipe 25 is connected to the inlet of the outlet pump 26, and the liquid fertilizer is sent into the dispensing tank 334 through the delivery pipe 27.

[0052] Furthermore, the bottom end of the stirring shaft 22 extends out of the bottom end of the liquid storage tank 2 through the sealed bearing 210. The bottom end of the stirring shaft 22 is provided with a transmission hole 28. The output shaft of the stirring motor 21 is fixedly connected to a transmission head 29. The transmission head 29 is inserted into the transmission hole 28 to drive the stirring shaft 22 to rotate, which facilitates disassembly and subsequent maintenance.

[0053] Furthermore, a guide ring 211 is rotatably connected to the output shaft of the stirring motor 21 to facilitate the connection between the output shaft of the stirring motor 21 and the stirring shaft 22.

[0054] How to use:

[0055] When starting to use the device, first add the desired liquid fertilizer or solid-liquid mixture to the inlet 24, and turn on the stirring motor 21 to fully mix the fertilizer while preventing sedimentation. The liquid fertilizer flows through the bottom slope into the outlet pipe 25, and is pumped into the dispensing tank 334 by the outlet pump 26, and then enters the inner injection tube 32.

[0056] In the initial state, the inner injection tube 32 is pressed to the deepest part of the outer injection tube 31 by the second lifting plate 332, so that the liquid outlet 33 is closed to prevent the liquid fertilizer from flowing out. At the same time, after setting the corresponding frequency and pressing depth, the injection volume and injection interval can be automatically controlled. Under the action of the first lifting plate 327, multiple external injection tubes 31 are simultaneously pressed down. After their drill bits 315 are inserted into the soil to a certain depth, the locking component opens, connecting the fertilization holes 314. The locking component continues until it reaches a certain depth, positioning the external injection tubes 31. Meanwhile, the inner injection tube 32 is also raised under the action of the second lifting plate 332, opening the liquid outlet 33. Liquid fertilizer enters the external injection tube 31 under the pressure of the liquid pump 26 and is injected into the soil through the fertilization holes 314 of the external injection tube 31. After fertilization, the inner injection tube 32 is pressed down under the action of the second lifting plate 332, causing the liquid outlet 33 to close again, ceasing liquid dispensing. Then, the first lifting plate 327 is raised under the action of the first spring 330, and the drill bits 315 are pulled out of the ground, completing the injection fertilization. This process is repeated continuously to achieve automatic injection. Furthermore, the device can automatically stop and start by pre-programming the drive motor 13, the first telescopic rod 328, and the second telescopic rod 331, coordinating with the automatic injection process to achieve a truly non-human-powered automatic fertilization process.

[0057] The device takes into full account the actual environment of farmland. The front of the device body 11 is equipped with a row of hook teeth 12, which can clear away debris in front of the device when it moves forward, preventing it from obstructing the fertilization process. The track 17 also improves the stability of the movement process.

[0058] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An injection-type automatic fertilizer applicator, characterized in that, include: A traveling vehicle (1), wherein a traveling component is installed at the bottom end of the traveling vehicle (1); Liquid storage tank (2), which is fixedly installed on the traveling vehicle (1); The fertilization mechanism (3) includes a support frame fixedly installed on the traveling vehicle (1), a plurality of external injection tubes (31) are slidably connected on the support frame, a first drive assembly is driven between the external injection tubes (31) and the support frame, an inner injection tube (32) communicating with the liquid storage tank (2) is slidably sealed inside the external injection tubes (31), and the inner injection tube (32) is drivenly connected to a second drive assembly fixedly installed on the first drive assembly; a liquid outlet head (33) is fixedly installed at the bottom end of the external injection tubes (31), and the liquid outlet head (33) is detachably connected and communicates with the bottom end of the inner cavity of the external injection tubes (31); The liquid outlet head (33) includes a mounting base (34) fixedly installed at the bottom end of the inner injection tube (32). A receiving hole (35) is provided through the mounting base (34). A plurality of liquid outlet holes (36) communicating with the inner cavity of the outer injection tube (31) are provided through the side wall of the receiving hole (35). A sliding block (37) is slidably sealed in the receiving hole (35). A liquid inlet hole (38) is provided at the top of the sliding block. A connecting hole (39) corresponding to the liquid outlet hole (36) is provided through the bottom side wall of the liquid inlet hole (38). The liquid outlet hole (36) and the connecting hole (39) are detachably connected. A positioning ring (310) is fixedly connected to the top of the sliding block (37), and a plurality of locking springs (311) are fixedly connected between the positioning ring (310) and the top of the mounting base (34); a contact plate (312) is fixedly connected to the bottom of the sliding block (37), and the bottom of the contact plate (312) is detachably connected to the bottom of the inner cavity of the external injection tube (31); a filter screen (313) is fixedly installed on the top tube of the liquid inlet hole (38), and the filter screen (313) is fixedly connected to the top of the positioning ring (310); The side wall of the external injection tube (31) is provided with several fertilizer holes (314), the fertilizer holes (314) are connected to the bottom end of the inner cavity of the external injection tube (31), and a self-closing component is detachably connected inside the fertilizer hole (314); the bottom end of the external injection tube (31) passes through the traveling vehicle (1) and is fixedly connected to a drill bit (315). The self-closing assembly includes a self-closing groove (316) formed on the side wall of the external injection tube (31) and corresponding to the fertilizer hole (314). A connecting groove (317) is formed at the bottom end of the self-closing groove (316). A clearance groove (318) is formed at the bottom end of the connecting groove (317) and communicates with the top end of the fertilizer hole (314). A self-closing plate (319) corresponding to the fertilizer hole (314) is slidably connected within the clearance groove (318). (319) is detachably connected to the fertilizer hole (314); a connecting rod (320) is fixedly connected to the top of the self-closing plate (319), the connecting rod (320) is slidably connected in the communicating groove (317) and extends into the self-closing groove (316); a fixing ring (321) is fixedly connected to the outer wall of the connecting rod (320), a positioning plate (322) is fixedly connected to the outer wall of the fixing ring (321), and the positioning plate (322) extends out of the self-closing groove (316).

2. The injection-type automatic fertilizer applicator according to claim 1, characterized in that: The support frame includes a plurality of support columns (326) fixedly connected to the traveling vehicle (1). The first drive assembly includes a first lifting plate (327) slidably connected between the plurality of support columns (326). The top ends of a plurality of external injection tubes (31) are arrayed and fixedly connected to the bottom end of the first lifting plate (327). A plurality of first telescopic rods (328) are fixedly connected to the top end of the first lifting plate (327). A fixing plate (329) is fixedly connected to the fixed end of the plurality of first telescopic rods (328). The fixing plate (329) is fixedly connected between the plurality of support columns (326). A first spring (330) is fixedly connected between the first lifting plate (327) and the traveling vehicle (1). The first spring (330) is sleeved on the support column (326).

3. The injection-type automatic fertilizer applicator according to claim 2, characterized in that: The second drive assembly includes a second telescopic rod (331) fixed to the bottom end of the first lifting plate (327), a second lifting plate (332) fixed to the top end of a plurality of second telescopic rods (331), the top end array of the inner injection tubes (32) fixed to the bottom end of the second lifting plate (332), the outlet of the liquid storage tank (2) passes through the second lifting plate (332) and communicates with the inner cavity of a plurality of the inner injection tubes (32); a plurality of second springs (333) are fixed between the first lifting plate (327) and the second lifting plate (332), and the second springs (333) are sleeved on the outer side of the inner injection tubes (32).

4. The injection-type automatic fertilizer applicator according to claim 3, characterized in that: The bottom end of the fixed plate (329) is fixedly connected to a liquid distribution tank (334), which is connected to the liquid storage tank (2); the bottom end of the liquid distribution tank (334) is fixedly connected to and connected to a plurality of elastic tubes (335) corresponding to the top tube of the inner injection tube (32), and the bottom end of the elastic tubes (335) passes through the second lifting plate (332) and is connected to the inner injection tube (32).

5. The injection-type automatic fertilizer applicator according to claim 3, characterized in that: The vehicle (1) includes a body (11), the liquid storage tank (2) and the support frame are respectively fixed to the body (11); a walking component is provided at the bottom of the body (11); a control component is provided at one end of the body (11) facing the liquid storage tank (2), the control component is electrically connected to the liquid storage tank (2), the first telescopic rod (328) and the bottom second telescopic rod (331), and the control component is electrically connected to the walking component.

6. The injection-type automatic fertilizer applicator according to claim 5, characterized in that: The walking vehicle (1) has several hook teeth (12) arranged side by side fixedly installed at one end away from the liquid storage tank (2), and the bottom end of the hook teeth (12) is not lower than the bottom end of the walking component.

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