Injection type pesticide applying machine for applying nitrogen and phosphorus fertilizers to tree root systems

Abstract

The invention relates to the technical field of applying nitrogen-phosphorus fertilizers to tree root systems, in particular to an injection type pesticide applying machine for applying nitrogen-phosphorus fertilizers to tree root systems. Comprising a supporting frame fixed to a movable frame, a cantilever is rotationally installed on the supporting frame, a vertical rod is fixedly connected to the cantilever, a spiral drill rod is rotationally and telescopically connected to the vertical rod, a transverse guide ring is fixedly connected to the cantilever, a hose connected with a pesticide box in a penetrating mode is slidably connected into the transverse guide ring, and a longitudinal guide ring is fixedly installed on the vertical rod; a hard pipe which is in through connection with the spiral drill rod and is used for injecting applied pesticide is slidably connected in the longitudinal guide ring; the supporting frame is provided with a limiting assembly for limiting the rotating range of the cantilevers and further provided with a driving assembly for driving the two sets of spiral drill rods connected to the lower portions of the cantilevers to rotate. The injection type pesticide applying machine can inject nitrogen and phosphorus fertilizers into two positions of tree root systems at the same time, the pesticide applying speed is high, the tree root systems can uniformly absorb the nitrogen and phosphorus fertilizers, and the effect of assisting tree growth is improved.

Description

Technical Field

[0001] The invention relates to the technical field of applying nitrogen and phosphorus fertilizers to tree root systems, and in particular to an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to tree root systems. Background Art

[0002] Nitrogen fertilizer can promote the lush growth of tree branches and leaves, make the leaves of trees more luxuriant, and improve the efficiency of tree photosynthesis. Phosphorus fertilizer helps promote the development of the root system and the maturation of seeds, and accelerates the accumulation and transformation of tree nutrients. Nitrogen and phosphorus fertilizers can be injected and applied to the root system of trees through sprayers, which can promote tree growth, increase productivity, and improve the soil environment.

[0003] Chinese patent CN203482709U discloses a portable rhizosphere fertilizer and pesticide applicator for garden trees, wherein a motor is arranged in a shell of the pesticide applicator, and the motor is connected to a reduction device, and the reduction device drives a hydraulic pump to work and a hollow drill bit to rotate; an infusion tube is arranged between the fertilizer liquid bottle and the hydraulic pump, and a flow meter is arranged on the infusion tube; the liquid outlet of the hydraulic pump is connected to the hollow drill bit; the tail end of the hollow drill bit is connected to the shell through a drill bit disassembly nut; a liquid outlet is arranged at the tip of the hollow drill bit; a handle is arranged on the shell; the pesticide applicator is simple to operate, easy to use, and suitable for various soils; the amount and depth of fertilization and pesticide application can be determined according to the needs of the trees.

[0004] The roots of trees are distributed in a disk shape in the soil. In order to ensure that the applied nitrogen and phosphorus fertilizers are evenly absorbed by the tree roots, it is more effective to inject and apply nitrogen and phosphorus fertilizers at multiple locations within the distribution range of the tree roots than to apply them at a single location. However, some existing sprayers can only apply fertilizers at one location of the tree root system at a time. For large orchards and woods, the application of nitrogen and phosphorus fertilizers requires a large amount of operation. In addition, when the injection sprayer penetrates deep into the soil, the injection port is easily blocked by the soil, affecting the injection and application of liquid nitrogen and phosphorus fertilizers into the soil. Summary of the invention

[0005] In view of the above problems, an injection type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees is provided. The rotation angle of the cantilever and the auger rod can be controlled by a limit assembly, and the rotation can be synchronously controlled by a drive assembly after the two sets of auger rods rotate, so as to realize the symmetrical injection and application of nitrogen and phosphorus fertilizers on both sides of the root system of the tree. The problem that the roots of the trees are distributed in a disk shape in the soil is solved. In order to ensure that the applied nitrogen and phosphorus fertilizers are evenly absorbed by the roots of the trees, it is more effective to inject and apply nitrogen and phosphorus fertilizers at multiple positions within the distribution range of the tree roots than to apply nitrogen and phosphorus fertilizers at a single position. However, some existing pesticide applicators can only apply fertilizers at one position of the tree root system at a time, and the operation amount for applying nitrogen and phosphorus fertilizers on large orchards and woods is large.

[0006] In order to solve the problems of the prior art, the present invention provides an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees, comprising a mobile frame and a medicine box installed on the mobile frame, the injection-type pesticide applicator also includes a support frame fixed on the mobile frame, a cantilever rotatably installed on the support frame, a vertical pole fixedly connected to the cantilever, a spiral drill rod rotatably and telescopically connected to the vertical pole, a transverse guide ring fixedly connected to the cantilever, a hose connected to the medicine box slidably connected in the transverse guide ring, a longitudinal guide ring fixedly installed on the vertical pole, a hard pipe connected to the spiral drill rod for injection and application slidably connected in the longitudinal guide ring; a turntable that contacts and rolls with the tree trunk is rotatably installed on the cantilever; a limit assembly for limiting the rotation range of the cantilever is provided on the support frame, and a driving assembly for driving the two groups of spiral drill rods connected under the cantilever to rotate is also provided on the support frame.

[0007] Preferably, the limit assembly includes a convex plate fixed on the cantilever, a limit hollow cylinder fixedly installed on the support frame, a limit round rod coaxially fixed in the limit hollow cylinder, a telescopic rod telescopically connected to the limit hollow cylinder and slidably sleeved on the limit round rod, a limit spring is connected between the telescopic rod and the limit hollow cylinder, a push rod is rotatably connected to the telescopic rod, and the push rod is rotatably assembled between the convex plate.

[0008] Preferably, the driving assembly includes a transmission plate rotatably mounted on the cantilever and coaxially connected to the auger rod, a driving plate is coaxially rotatably connected to the rotational connection between the cantilever and the support frame, a belt is connected between the driving plate and the transmission plate, a large gear is coaxially fixed to the driving plate, a small gear is meshingly assembled beside the large gear, the small gear is rotatably mounted on the support frame, a driven bevel gear rotatably mounted on the support frame is coaxially fixed to the small gear, a driven gear rotatably mounted on the support frame is meshingly assembled beside the driving gear, and the driving bevel gear is coaxially fixedly connected to the driven gear.

[0009] Preferably, a driving gear rod rotatably mounted in the vertical pole is coaxially fixedly connected to the transmission disc, the driving gear rod is slidably connected with the auger rod, and the auger rod is provided with an external thread assembled with the internal thread of the vertical pole.

[0010] Preferably, a ring is rotatably installed on the auger rod, the ring is connected to the hard pipe, a liquid inlet is provided on the auger rod and connected to the ring and the hard pipe, a transmission channel is provided in the auger rod, and a liquid discharge port connected to the transmission channel is provided at the drill bit below the auger rod.

[0011] Preferably, the auger rod is provided with a dredging component for dredging soil blocking the drainage outlet.

[0012] Preferably, the dredging assembly includes a dredging rod longitudinally slidably installed in the auger rod, a positioning column is fixedly installed on the dredging rod, and a return spring is connected between the positioning column and the auger rod; the auger rod is provided with an extrusion assembly for controlling the longitudinal movement of the positioning column and the dredging rod.

[0013] Preferably, the extrusion assembly includes an extrusion column that is laterally slidably mounted on the auger rod, the extrusion column is rotatably connected to a support rod, the support rod is rotatably assembled with the positioning column, and extrusion balls corresponding to the longitudinal direction of the extrusion column are fixed in the vertical rod at equal intervals in the longitudinal direction.

[0014] Preferably, the medicine box is provided with a mixing assembly for driving and stirring the liquid nitrogen and phosphorus fertilizer while the auger rod rotates and penetrates into the soil.

[0015] Preferably, the mixing assembly includes a stirring rod rotatably installed in the medicine box, a turbine is coaxially fixedly connected to the stirring rod, a worm rotatably installed in the medicine box is meshedly connected next to the turbine, a power bevel gear is coaxially fixedly connected to the worm, a transmission bevel gear is meshedly assembled next to the power bevel gear, and the transmission bevel gear is coaxially fixedly connected to the driving gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a limit position assembly to limit the rotation angle of the cantilever, and the two groups of cantilevers are fitted on the tree trunk to push the pesticide applicator to move in the direction close to the tree trunk. The two groups of cantilevers are fitted on the outside of the tree trunk and rotated and unfolded, so that the spiral drill rods connected under the two groups of cantilevers are symmetrically distributed on both sides of the tree trunk. The two groups of spiral drill rods are controlled to synchronously penetrate into the soil on both sides of the tree, so that nitrogen and phosphorus fertilizers can be injected into multiple positions of the tree root system at the same time, and the injection positions are relatively dispersed, so as to maintain the uniformity of nitrogen and phosphorus fertilizer injection. At the same time, the rotating cantilever can be suitable for trees of different thicknesses, and the pesticide applicator has a wide range of applications.

[0018] 2. The present invention is provided with a driving assembly that can drive the two groups of spiral drill rods after rotation. When the cantilever rotates, it rotates relatively with the large gear. The driving discs on the two groups of cantilevers are synchronously controlled to rotate synchronously through the gear meshing transmission structure such as the driving gear, the driven gear, the driving bevel gear, the driven bevel gear, the small gear and the large gear. The driving disc drives the transmission disc to rotate through the belt, and the transmission disc drives the spiral drill rod to rotate through the driving gear rod. When the spiral drill rod rotates, it rotates downward in the vertical pole through the external thread, so that the threaded drill rod can rotate deep into the soil, thereby injecting nitrogen and phosphorus fertilizers into the root system in the soil.

[0019] 3. The present invention is provided with a dredging component. When the auger rod rotates and enters the soil, part of the soil during the rotation process is blocked in the drainage port on the lower side of the auger rod. When the auger rod rotates, it drives the internal dredging rod, the positioning column and the extrusion column to move downward synchronously. During the process of the extrusion column rotating and moving downward in the vertical pole, the extrusion column intermittently contacts the extrusion ball on the inner wall of the vertical pole. The extrusion ball squeezes the extrusion column inward, so that the extrusion column moves toward the inside of the auger rod. Under the transmission of the support rod, the positioning column and the dredging rod move downward. The dredging rod moves downward to push and transport the soil in the drainage port, thereby achieving the purpose of clearing the soil blocking the drainage port and avoiding the drainage port being completely blocked to affect the application of liquid nitrogen and phosphorus fertilizers to the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a mobile frame of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0021] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a vertical pole of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0022] Figure 3 The diagram is a cantilever three-dimensional structure diagram of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0023] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of the belt of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0024] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a push rod of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0025] Figure 6 The present invention is a schematic diagram of the cross-sectional structure of a limited hollow cylinder of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0026] Figure 7 The diagram is a three-dimensional structural diagram of the large gear of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0027] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of the driven gear of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0028] Fig. 9 The present invention is a schematic diagram of the three-dimensional structure of a hose of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0029] Fig.10 The diagram is a three-dimensional diagram of the rigid tube structure of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0030] Fig.11The present invention is a schematic diagram of the three-dimensional structure of an auger rod of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0031] Fig.12 The present invention is a schematic diagram of the three-dimensional structure of the liquid inlet of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0032] Fig.13 The present invention is a schematic diagram of the three-dimensional structure of a dredging rod of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0033] Fig.14 The present invention is a schematic diagram of the three-dimensional structure of a return spring of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0034] Fig.15 The present invention is a schematic diagram of the three-dimensional structure of a positioning column of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0035] Fig.16 The present invention is a schematic diagram of the three-dimensional structure of an extrusion column of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0036] Fig.17 The present invention is a schematic diagram of the three-dimensional structure of a stirring rod of an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees.

[0037] The numbers in the figure are:

[0038] 1. Mobile frame; 11. Medicine box; 12. Support frame; 13. Cantilever; 131. Turntable; 14. Vertical pole; 15. Auger rod; 151. Drive gear rod; 152. External thread; 16. Horizontal guide ring; 17. Hose; 18. Longitudinal guide ring; 19. Hard pipe; 2. Limiting assembly; 21. Convex disc; 22. Limiting hollow cylinder; 23. Limiting round rod; 24. Telescopic rod; 25. Limiting spring; 26. Push rod; 3. Driving assembly; 31. Transmission disc; 32. Driving disc; 33. Belt; 34. Large gear Wheel; 35, pinion; 36, driven bevel gear; 37, driving gear; 38, driven gear; 39, driving bevel gear; 41, ring; 42, liquid inlet; 43, transmission channel; 44, liquid discharge port; 45, dredging component; 451, dredging rod; 452, positioning column; 453, return spring; 454, extrusion component; 4541, extrusion column; 4542, support rod; 4543, extrusion ball; 51, stirring rod; 52, turbine; 53, worm; 54, power bevel gear; 55, transmission bevel gear. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] See also Figure 1-Figure 8 As shown, an injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees comprises a mobile frame 1 and a medicine box 11 mounted on the mobile frame 1, the injection-type pesticide applicator also comprises a support frame 12 fixed on the mobile frame 1, a cantilever 13 rotatably mounted on the support frame 12, a vertical pole 14 fixedly connected to the cantilever 13, a spiral drill rod 15 rotatably and telescopically connected to the vertical pole 14, a transverse guide ring 16 fixedly connected to the cantilever 13, a hose 17 connected to the medicine box 11 being slidably connected in the transverse guide ring 16, a longitudinal guide ring 18 fixedly mounted on the vertical pole 14, a hard pipe 19 connected to the spiral drill rod 15 for injection and application being slidably connected in the longitudinal guide ring 18; a turntable 131 contacting and rolling with the tree trunk is rotatably mounted on the cantilever 13; a limit assembly 2 for limiting the rotation range of the cantilever 13 is provided on the support frame 12, and a driving assembly 3 for driving the spiral drill rods 15 connected to the lower parts of the two cantilever arms 13 to rotate is also provided on the support frame 12.

[0041] The mobile frame 1 is used to push the pesticide applicator to the side of the tree trunk, and the turntable 131 on the cantilever 13 is fitted to the tree trunk, and the mobile frame 1 is pushed to move in the direction close to the tree trunk. The turntable 131 on the cantilever 13 rolls on the tree trunk, and the two groups of cantilevers 13 on the support frame 12 are rotated outward and unfolded. The corresponding spiral drill rods 15 connected below the cantilever 13 are rotated to the side of the trunk. The two spiral drill rods 15 on the pesticide applicator are symmetrically distributed on both sides of the trunk. The distribution positions of the two spiral drill rods 15 can ensure that the injected nitrogen and phosphorus fertilizers can be evenly absorbed by the tree roots. The rotated cantilever 13 can be relatively stably corresponding to both sides of the tree trunk under the limiting action of the limit assembly 2, and the two groups of spiral drill rods 15 can be synchronously controlled by the driving assembly 3 on the support frame 12 to rotate deep into the soil, so as to achieve the purpose of evenly applying nitrogen and phosphorus fertilizers to multiple positions of the tree root system.

[0042] When the auger rod 15 is controlled to rotate and penetrate into the soil, the hard tube 19 is connected in the longitudinal guide ring 18 and moves downward, and the hose 17 is connected in the transverse guide ring 16 and moves. When the auger rod 15 completely enters the soil, the liquid nitrogen and phosphorus fertilizer is controlled by the pump body in the medicine box 11 to be transmitted to the hose 17. The nitrogen and phosphorus fertilizer in the hose 17 enters the auger rod 15 through the hard tube 19. The nitrogen and phosphorus fertilizer is applied and injected into the soil through the auger rod 15. The nitrogen and phosphorus fertilizer is absorbed by the roots of trees in the soil, which can promote tree growth, improve productivity, and improve the soil environment.

[0043] See also Figure 1-Figure 6As shown, the limit assembly 2 includes a cam 21 fixed on the cantilever 13, a limit hollow cylinder 22 fixedly installed on the support frame 12, a limit round rod 23 coaxially fixed in the limit hollow cylinder 22, a telescopic rod 24 slidably sleeved on the limit round rod 23 is telescopically connected in the limit hollow cylinder 22, a limit spring 25 is connected between the telescopic rod 24 and the limit hollow cylinder 22, a push rod 26 is rotatably connected to the telescopic rod 24, and the push rod 26 is rotatably assembled with the cam 21; the cams 21 on the two cantilevers 13 are connected to the two sides of the limit hollow cylinder 22 through the push rod 26 and the telescopic rod 24, and the cam 21 is eccentrically connected to the connection between the cantilever 13 and the support frame 12.

[0044] When the cantilever 13 rotates and unfolds at the side of the trunk, the cantilever 13 drives the convex plate 21 to rotate in a circle, and the push rod 26 connected between the convex plate 21 and the telescopic rod 24 rotates accordingly. The rotating push rod 26 pushes the telescopic rod 24 to penetrate the limiting hollow cylinder 22 and move telescopically. The telescopic rod 24 is sleeved on the outside of the limiting round rod 23 and slides. The limiting spring 25 connected between the telescopic rod 24 and the limiting hollow cylinder 22 is elastically adjusted. The rotation angle of the cantilever 13 can be limited by the elastic structure, so that the cantilever 13 can be kept relatively stably rotating and fitting outside the trunk.

[0045] See also Figure 1-Figure 8 As shown, the drive assembly 3 includes a transmission disk 31 rotatably mounted on the cantilever 13 and coaxially connected to the auger rod 15, a drive disk 32 is coaxially rotatably connected to the rotation connection between the cantilever 13 and the support frame 12, a belt 33 is connected between the drive disk 32 and the transmission disk 31, a large gear 34 is coaxially fixed to the drive disk 32, a small gear 35 is meshed and assembled beside the large gear 34, the small gear 35 is rotatably mounted on the support frame 12, a driven bevel gear 36 rotatably mounted on the support frame 12 is coaxially fixed to the small gear 35, a driven gear 38 rotatably mounted on the support frame 12 is meshed and assembled beside the driving gear 37, and a driving bevel gear 39 is coaxially fixedly connected to the driven gear 38; the driving gear 37 is connected to the output end of the motor on the support frame 12.

[0046] The running motor controls the driving gear 37 to rotate, and the driving gear 37 drives the driven gear 38 of the side meshing transmission to rotate accordingly. The driving bevel gear 39 coaxially fixed on the driven gear 38 rotates synchronously. The driving bevel gear 39 drives the driven bevel gear 36 of the side meshing transmission to rotate accordingly. The driven bevel gear 36 drives the coaxially connected small gear 35 to rotate synchronously. The small gear 35 drives the large gear 34 of the side meshing transmission to rotate accordingly. The large gear 34 drives the coaxially connected driving disc 32 to rotate synchronously. The driving disc 32 drives the transmission disc 31 to rotate through the belt 33. The transmission disc 31 controls the rotation of the auger rod 15 through the driving gear rod 151, so as to control the rotation of the auger rod 15 to penetrate into the soil.

[0047] See also Figure 9-11As shown, a driving gear rod 151 rotatably installed in the vertical pole 14 is coaxially fixedly connected to the transmission plate 31, and the driving gear rod 151 is slidably connected with the auger rod 15. The auger rod 15 is provided with an external thread 152 assembled with the internal thread of the vertical pole 14; the vertical pole 14 is provided with an internal thread that is threadedly assembled with the external thread 152 on the outside of the auger rod 15.

[0048] When the transmission disc 31 rotates, the driving gear rod 151 is driven to rotate synchronously. The driving gear rod 151 is engaged and slidably connected in the auger rod 15. When the driving gear rod 151 rotates, it drives the auger rod 15 to rotate synchronously. When the auger rod 15 rotates, it rotates and moves longitudinally in the vertical rod 14 through the external thread 152 and the inner wall thread assembly structure of the vertical rod 14, so as to drive the auger rod 15 to rotate and move deep into the soil, so as to inject nitrogen and phosphorus fertilizers into the soil.

[0049] See also Figure 9-13 As shown, a ring 41 is rotatably installed on the auger rod 15, and the ring 41 is connected to the hard tube 19. A liquid inlet 42 connected to the ring 41 and the hard tube 19 is provided on the auger rod 15, a transmission channel 43 is provided in the auger rod 15, and a drainage port 44 connected to the transmission channel 43 is provided at the drill bit below the auger rod 15; a plurality of drainage ports 44 are provided at equal angles on the inclined surface of the drill bit below the auger rod 15, and a plurality of liquid inlets 42 are provided on the auger rod 15 at equal angles. When the auger rod 15 is rotated to any angle, the hard tube 19 on the ring 41 is connected to the corresponding liquid inlet 42.

[0050] When the auger rod 15 rotates and penetrates into the soil, it drives the ring 41 to move downward synchronously. The ring 41 is sleeved on the outside of the auger rod 15 at a fixed angle, and the hard tube 19 on the ring 41 moves downward synchronously with the ring 41. When the auger rod 15 completely penetrates into the soil, it flows into the soil through the hose 17, the hard tube 19, the liquid inlet 42, the transmission channel 43 and the discharge port 44, so that the roots of the trees can absorb the nitrogen and phosphorus fertilizers in the soil.

[0051] See also Figure 10-Figure 16 As shown, the auger rod 15 is provided with a dredging component 45 for dredging the soil blocking the drainage port 44 .

[0052] When the auger rod 15 rotates and enters the soil, part of the soil is blocked in the drainage port 44 on the auger rod 15. The soil blocked in the drainage port 44 can be cleared by the dredging component 45, so that the nitrogen and phosphorus fertilizers transmitted in the transmission channel 43 can enter the soil smoothly.

[0053] See also Figure 10-Figure 16As shown, the dredging assembly 45 includes a dredging rod 451 longitudinally slidably installed in the auger rod 15, a positioning column 452 is fixedly installed on the dredging rod 451, and a return spring 453 is connected between the positioning column 452 and the auger rod 15; the auger rod 15 is provided with an extrusion assembly 454 for controlling the longitudinal movement of the positioning column 452 and the dredging rod 451; the inclined rod below the dredging rod 451 is coaxially arranged through the drain port 44, and the diameter of the inclined rod below the dredging rod 451 is much smaller than the diameter of the drain port 44, so that the dredging rod 451 can clean and loosen the soil blocked in the drain port 44 when moving back and forth up and down.

[0054] When the auger rod 15 rotates and moves downward in the vertical rod 14, it drives the dredging rod 451 to move downward synchronously. When the auger rod 15 moves downward, the dredging rod 451 is controlled to move downward through the extrusion component 454. The dredging rod 451 compresses the reset spring 453 downward. When the dredging rod 451 is not affected by the extrusion component 454, the dredging rod 451 is pushed upward under the elastic pushing action of the reset spring 453. In this way, the dredging rod 451 is controlled to move reciprocally up and down. The reciprocating dredging rod 451 can dredge and loosen the soil blocked in the drainage port 44.

[0055] See also Figure 14-16 As shown, the extrusion assembly 454 includes an extrusion column 4541 which is laterally slidably installed on the spiral drill rod 15, and a support rod 4542 is rotatably connected to the extrusion column 4541. The support rod 4542 is rotatably assembled with the positioning column 452, and extrusion balls 4543 corresponding to the longitudinal direction of the extrusion column 4541 are fixed in the vertical rod 14 at equal intervals in the longitudinal direction.

[0056] When the auger rod 15 rotates and moves downward in the vertical rod 14, the extrusion column 4541 assembled with a transverse slide in the auger rod 15 rotates and moves downward in the vertical rod 14 synchronously, and the extrusion column 4541 intermittently contacts with the extrusion balls 4543 at different positions on the inner wall of the vertical rod 14. The extrusion column 4541 is laterally connected and slides in the auger rod 15 under the extrusion force of the extrusion balls 4543, and the support rod 4542 connected between the extrusion column 4541 and the positioning column 452 rotates accordingly, and the rotating support rod 4542 pushes the positioning column 452 to move downward. The positioning column 452 drives the dredging rod 451 to move downward synchronously, and the dredging rod 451 moves downward to squeeze the reset spring 453. When the squeezing column 4541 is away from the squeezing ball 4543, the dredging rod 451 moves upward under the push of the reset spring 453, and the squeezing column 4541 moves laterally to the outside of the auger rod 15. In this way, when the auger rod 15 rotates and moves downward, the squeezing column 4541 moves and continuously squeezes and contacts the squeezing balls 4543 at different positions, thereby achieving the purpose of reciprocatingly driving the dredging rod 451 to move up and down for dredging.

[0057] See also Figure 1 , Figure 2 and Fig.17 As shown, the medicine box 11 is provided with a mixing assembly for driving and stirring liquid nitrogen and phosphorus fertilizer while the auger rod 15 rotates and penetrates into the soil.

[0058] When the two auger rods 15 on the pesticide applicator are controlled to rotate by the driving assembly 3, the mixing assembly in the medicine box 11 can be synchronously driven to mix and stir the liquid nitrogen and phosphate fertilizers in the medicine box 11 to maintain the uniformity of the distribution of the liquid nitrogen and phosphate fertilizers and avoid the generation of partial precipitation.

[0059] See also Figure 1 , Figure 2 and Fig.17 As shown, the mixing assembly includes a stirring rod 51 rotatably installed in the medicine box 11, a turbine 52 is coaxially fixedly connected to the stirring rod 51, a worm 53 rotatably installed in the medicine box 11 is meshedly connected to the turbine 52, a power bevel gear 54 is coaxially fixedly connected to the worm 53, a transmission bevel gear 55 is meshedly assembled to the power bevel gear 54, and the transmission bevel gear 55 is coaxially fixedly connected to the driving gear 37.

[0060] When the driving gear 37 rotates, it controls the power bevel gear 54 to rotate synchronously. The power bevel gear 54 rotates correspondingly through the transmission bevel gear 55 that is meshed with the transmission bevel gear 55 next to it. The transmission bevel gear 55 drives the worm 53 in the medicine box 11 to rotate. The worm 53 drives the turbine 52 to rotate through the meshing transmission. The stirring rod 51 coaxially fixedly connected to the turbine 52 rotates synchronously to stir the liquid nitrogen and phosphorus fertilizers in the medicine box 11, thereby achieving the effect of evenly mixing the nitrogen and phosphorus fertilizers.

[0061] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees, comprising a mobile frame (1) and a medicine box (11) mounted on the mobile frame (1), characterized in that: The injection-type pesticide applicator also includes a support frame (12) fixed on the mobile frame (1), a cantilever (13) rotatably mounted on the support frame (12), a vertical pole (14) fixedly connected to the cantilever (13), a spiral drill rod (15) rotatably and telescopically connected to the vertical pole (14), a transverse guide ring (16) fixedly connected to the cantilever (13), a hose (17) connected to the medicine box (11) slidably connected in the transverse guide ring (16), a longitudinal guide ring (18) fixedly mounted on the vertical pole (14), and a hard pipe (19) connected to the spiral drill rod (15) slidably connected in the longitudinal guide ring (18) for injecting and applying pesticides; A rotating disk (131) is rotatably mounted on the cantilever (13) and is in contact with and rolls on the tree trunk; The support frame (12) is provided with a limit assembly (2) for limiting the rotation range of the cantilever (13), and the support frame (12) is also provided with a driving assembly (3) for driving the rotation of the spiral drill rods (15) connected under the two groups of cantilever arms (13).

2. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 1, characterized in that: The limit assembly (2) comprises a convex plate (21) fixed on the cantilever (13), a limit hollow cylinder (22) fixedly mounted on the support frame (12), a limit round rod (23) coaxially fixed in the limit hollow cylinder (22), a telescopic rod (24) slidably sleeved on the limit round rod (23) is telescopically connected in the limit hollow cylinder (22), a limit spring (25) is connected between the telescopic rod (24) and the limit hollow cylinder (22), a push rod (26) is rotatably connected to the telescopic rod (24), and the push rod (26) is rotatably assembled with the convex plate (21).

3. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 1, characterized in that: The driving assembly (3) comprises a transmission disc (31) rotatably mounted on a cantilever (13) and coaxially connected to a spiral drill rod (15); a driving disc (32) is coaxially rotatably connected to a rotationally connected portion of the cantilever (13) and a support frame (12); a belt (33) is connected between the driving disc (32) and the transmission disc (31); a large gear (34) is coaxially fixed to the driving disc (32); a small gear (35) is meshedly mounted next to the large gear (34); the small gear (35) is rotatably mounted on the support frame (12); a driven bevel gear (36) rotatably mounted on the support frame (12) is coaxially fixed to the small gear (35); a driven gear (38) rotatably mounted on the support frame (12) is meshedly mounted next to the driving gear (37); a driving bevel gear (39) is coaxially fixedly connected to the driven gear (38).

4. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 3, characterized in that: A driving gear rod (151) rotatably mounted in the vertical rod (14) is coaxially fixedly connected to the transmission plate (31); the driving gear rod (151) is slidably connected to the auger rod (15); and the auger rod (15) is provided with an external thread (152) assembled with an internal thread of the vertical rod (14).

5. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 1, characterized in that: A ring (41) is rotatably mounted on the auger rod (15), the ring (41) is connected to the hard tube (19), a liquid inlet (42) is provided on the auger rod (15) and is connected to the ring (41) and the hard tube (19), a transmission channel (43) is provided in the auger rod (15), and a liquid discharge port (44) connected to the transmission channel (43) is provided at a drill bit below the auger rod (15).

6. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 5, characterized in that: The auger rod (15) is provided with a dredging component (45) for dredging soil blocked in the drainage port (44).

7. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 6, characterized in that: The dredging assembly (45) comprises a dredging rod (451) longitudinally slidably mounted in the auger rod (15); a positioning column (452) is fixedly mounted on the dredging rod (451); a return spring (453) is connected between the positioning column (452) and the auger rod (15); The auger rod (15) is provided with an extrusion assembly (454) for controlling the longitudinal movement of the positioning column (452) and the dredging rod (451).

8. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 7, characterized in that: The squeezing assembly (454) comprises a squeezing column (4541) which is slidably mounted on the auger rod (15) in a transverse direction, a support rod (4542) being rotatably connected to the squeezing column (4541), the support rod (4542) being rotatably assembled with the positioning column (452), and squeezing balls (4543) corresponding to the squeezing column (4541) being longitudinally fixed at equal intervals in the vertical direction in the vertical rod (14).

9. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 1, characterized in that: The medicine box (11) is provided with a mixing assembly for driving and stirring liquid nitrogen and phosphorus fertilizers while the auger rod (15) rotates and penetrates into the soil.

10. The injection-type pesticide applicator for applying nitrogen and phosphorus fertilizers to the root system of trees according to claim 9, characterized in that: The mixing assembly comprises a stirring rod (51) rotatably mounted in a medicine box (11); a turbine (52) is coaxially fixedly connected to the stirring rod (51); a worm (53) rotatably mounted in the medicine box (11) is meshedly connected to the turbine (52); a power bevel gear (54) is coaxially fixedly connected to the worm (53); a transmission bevel gear (55) is meshedly assembled to the power bevel gear (54); and the transmission bevel gear (55) is coaxially fixedly connected to the driving gear (37).

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