Automatic fertilizing device for fruit tree seedlings

Abstract

The invention relates to the technical field of fruit tree fertilization, and discloses an automatic fertilization device for fruit tree seedlings, which is used for fertilization in the development period of the fruit tree seedlings and comprises N root system fertilization components distributed around the fruit tree seedlings, and the lower ends of the root system fertilization components are buried in soil; the elastic rope is used for fixing the root system fertilizing component on the fruit tree main rod; the root system fertilization component comprises a semi-buried box with openings in the upper end and the lower end, a fertilizer discharging assembly is arranged at the box bottom of the semi-buried box, an oval supporting cover is connected into the semi-buried box, a fertilizer guiding pipe is rotationally connected to the inner box wall of the semi-buried box, and a fertilizer discharging assembly is further arranged on the fertilizer guiding pipe. According to the automatic fertilizing device for the fruit tree seedlings, when the roots of the fruit tree seedlings are automatically fertilized, the fertilizer outlet pipe can deflect outwards with the axis of the supporting cover as the center along with vertical growth of the main stems of the fruit tree seedlings to adjust fertilizing points, so that the fertilizing points are not fixed and continuously extend outwards, and the situation that the fertilizing points are fixed and normal development of the roots of the fruit tree seedlings is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fruit tree fertilization, and in particular to an automatic fertilization device for fruit tree seedlings. Background Art

[0002] The seedling stage of fruit trees is a critical period for tree growth and root development. Reasonable fertilization can meet the nutrient needs of seedlings, promote their rapid growth and root development, and lay a solid foundation for subsequent flowering and fruiting. In the cultivation of fruit tree seedlings, in order to ensure that the fruit tree seedlings have sufficient nutritional development, the seedlings are often fertilized.

[0003] When fertilizing fruit trees, in order to allow the fruit trees to better absorb fertilizer, fertilizer is generally applied to the root system of the fruit trees. The commonly used method is the buried pipe fertilization method, which is to bury one end of a PVC pipe in the soil at the root position of the fruit tree, and apply fertilizer into the pipe through the other end of the pipe exposed to the surface. The fertilizer is fertilized to the root system through the water outlet of the pipe in the soil. Compared with direct fertilization in the shallow layer of the surface, this fertilization method is more effective in directly fertilizing the fruit trees.

[0004] However, the above fertilization method has the following defects:

[0005] Position fixation problem: The buried pipe position is relatively fixed, while the lateral roots of the fruit tree seedlings continue to spread outward, which will make it difficult for some lateral roots that are far away from the pipe to contact the fertilizer in the later stage, making it impossible for these roots to obtain sufficient nutrients, affecting the overall growth and development of the fruit tree seedlings. It may cause uneven growth of the above-ground part of the fruit tree seedlings, such as thin branches and yellow leaves.

[0006] Limited distribution range: The fertilizer concentration around the pipe is relatively high, and the fertilizer concentration slightly away from the pipe is lower. During the development stage of fruit tree seedlings, as the lateral roots expand, the roots will grow in a wider area, but buried pipe fertilization cannot meet the nutrient needs of the roots in these newly expanded areas. As a result, although the distribution range of the roots of fruit tree seedlings in the soil is expanded, the range of roots that can obtain sufficient nutrients is relatively fixed, which limits the comprehensive absorption of soil nutrients by the roots of fruit tree seedlings.

[0007] Excessive local nutrient concentration: As the fruit tree seedlings grow and the lateral roots expand, buried-tube fertilization will still mainly concentrate the fertilizer in the area near the tube, which will cause the soil nutrient concentration in this area to be too high, possibly causing damage to the root system, such as root burn, and inhibiting the normal growth and absorption function of the root system.

[0008] Lack of nutrients in other areas: After the lateral roots expand, the new root growth area cannot get timely and sufficient nutrient supply, resulting in an imbalance in soil nutrient distribution, affecting the balanced absorption of various nutrients by the roots of fruit tree seedlings in a wider soil range. In the long run, it may lead to nutrient deficiency and other problems in fruit tree seedlings, affecting their normal physiological metabolism and growth and development.

[0009] Difficulty in adjusting the fertilization position: After the lateral roots spread outward, fertilizer needs to be applied to a wider area to meet the root system's needs, but the buried pipe position is fixed. During the development stage of fruit tree seedlings, it is difficult to apply fertilizer to the new root distribution area. It may be necessary to re-bury the pipes or adopt other auxiliary fertilization methods, which increases the difficulty and cost of fertilization management. Summary of the invention

[0010] In view of the above problems existing in the prior art, an automatic fertilization device for fruit tree seedlings is proposed.

[0011] The present application provides an automatic fertilizing device for fruit tree seedlings, the purpose of which is to adjust the fertilization position as the lateral roots of the fruit tree seedlings continue to extend outward as they grow, thereby ensuring the fertilization effect and avoiding the influence of fixed-position fertilization on the normal development of the fruit tree seedlings.

[0012] The technical solution of the present invention is: an automatic fertilizing device for fruit tree seedlings, used for fertilizing fruit tree seedlings during their development, comprising:

[0013] Root fertilization components, the number of which is N, which are distributed around the fruit tree seedlings and the lower ends are buried in the soil;

[0014] Elastic rope to fix the root fertilization component to the main stem of the fruit tree;

[0015] The root fertilization component comprises a semi-buried box with openings at both ends, a fertilizer discharging assembly is arranged at the bottom of the semi-buried box, an elliptical support cover is connected inside the semi-buried box, a fertilizer guide pipe is rotatably connected to the box wall inside the semi-buried box, a fertilizer discharging assembly is also arranged on the fertilizer discharging assembly, and a power assembly is arranged on the fertilizer discharging assembly; during the growth stage of the main stem of the fruit tree seedling, the power assembly pulls the fertilizer discharging assembly to deflect outwardly with the axis of the support cover as the center to adjust the fertilization point, so as to fertilize the secondary roots extending outward of the fruit tree seedling;

[0016] Liquid fertilizer supply system automatically supplies water and fertilizer to the root fertilization components.

[0017] Furthermore, the liquid fertilizer supply system includes a liquid fertilizer delivery pump, the infusion end of the liquid fertilizer delivery pump is connected to a main liquid pipe, the main liquid pipe is connected to a branch pipe for fertilizing fruit trees, the other end of the branch pipe is connected to a fertilizer output component, and a pressure relief valve is provided on the branch pipe.

[0018] Furthermore, the fertilizer outlet assembly includes two rotating shafts symmetrically connected to the outer tube wall of the fertilizer guide tube, the two rotating shafts overlap with the axis of the support cover, the other end of one of the rotating shafts is rotatably connected to the back inner box wall of the semi-buried box, and a reset ring is fixedly sleeved on the shaft wall of the rotating shaft, and a torsion spring is jointly arranged on the reset ring and the back inner box wall of the semi-buried box.

[0019] Furthermore, the fertilizer guide pipe is slidably connected to a fertilizer outlet pipe through an upward spring seal, the top and bottom of the support cover are respectively provided with an arc-shaped movable cavity opening and a fertilizer outlet cavity opening, the lower end of the fertilizer outlet pipe passes through the fertilizer guide pipe and the fertilizer outlet cavity opening, and a pressure wheel is symmetrically rotatably connected to the outer tube wall of the fertilizer outlet pipe outside the support cover, and the pressure wheel is rollingly connected to the outer cover bottom of the support cover;

[0020] An extension pipe is limitedly and slidably connected inside the fertilizer guide pipe, the fertilizer guide pipe and the extension pipe are connected by bolts, one end of the extension pipe away from the fertilizer outlet pipe extends outside the fertilizer guide pipe and is connected to the liquid distribution pipe through a flange, and the liquid distribution pipe is arranged through the movable cavity.

[0021] Furthermore, the power assembly includes a fixed pulley rotatably connected to the semi-buried box, and the fixed pulley is arranged in the support cover, a bearing is sleeved on the outer tube wall of the extension tube away from one end of the fertilizer outlet tube, and a transmission frame is connected to the outer ring wall of the bearing, and a transmission rope is movably provided on the transmission frame, and a clamp is detachably connected to the other end of the transmission rope, the transmission rope is arranged around the fixed pulley, and the clamp is arranged against the main stem of the fruit tree through an elastic rope, the transmission rope is arranged obliquely through the movable cavity, and a cutting knife is connected in the movable cavity, and the cutting knife is located on the side of the elastic rope away from the main stem of the fruit tree seedling.

[0022] Furthermore, a ratchet is fixedly sleeved on the wall of the other rotating shaft, and the ratchet is divided into a tooth section and a smooth section. The tooth section has the same curvature as the fertilizer outlet cavity. A support bar is connected to the top of the inner cover of the support cover, and a driving cavity is opened at the lower end of the support bar. A ratchet is rotatably arranged in the driving cavity, and one end of the ratchet extends outside the driving cavity, and the ratchet is meshed with the ratchet.

[0023] Furthermore, the smooth section is connected with a pushing tooth, the tooth length of the pushing tooth is greater than the tooth length on the ratchet tooth section, the pushing tooth is located at the tail section of the tooth section, positioning grooves are symmetrically provided on both sides of the ratchet tooth, a reset spring is connected to the bottom of the positioning groove, a positioning pin is connected to the other end of the reset spring, the end of the positioning pin away from the reset spring is set to a hemispherical shape and extends to the cavity wall of the driving cavity mouth, a locking groove is provided on the cavity wall of the driving cavity mouth at the position of the positioning pin, and after the pushing tooth is in contact and disengaged from the ratchet tooth, the positioning pin is inserted into the locking groove.

[0024] Furthermore, the fertilizer placement assembly includes a bottom plate detachably connected to the bottom of the semi-buried box, the upper end of the bottom plate is divided into N+1 fertilizer placement areas by N partitions, and a fertilizer placement pipe is connected through the bottom plate of each fertilizer placement area.

[0025] Furthermore, the movable card on the lower fertilizer pipe is provided with a main fertilizer pipe, and a plurality of auxiliary fertilizer pipes are staggeredly connected on the pipe wall of the main fertilizer pipe. A retaining inclined block is connected to the position corresponding to each auxiliary fertilizer pipe on the inner pipe wall of the main fertilizer pipe, and a drainage hole is opened at the lowest point of the retaining inclined block.

[0026] Beneficial effects of the present invention:

[0027] 1. When automatically fertilizing the roots of fruit tree seedlings, the fertilizer pipe will adjust the fertilization point outward with the axis of the support cover as the center as the vertical growth of the main stem of the fruit tree seedling, so that the fertilization point is not fixed and continues to extend outward, avoiding the fertilization point from being fixed and affecting the normal development of the roots of the fruit tree seedlings.

[0028] 2. When fixed-point fertilization is required, when the fertilizer discharge pipe rotates to the specified position, the transmission rope is separated from the clamping block, and the stop position of the fertilizer discharge pipe can be fixed by the cooperation between the ratchet and the ratchet teeth, so that the fertilizer discharge pipe can be fixed at the specified position for fertilization.

[0029] 3. When the fertilizer discharge pipe is about to rotate to the end of the fertilizer discharge cavity, the ratchet wheel and the ratchet teeth disengage from each other, and the pushing teeth will push the ratchet teeth to stay in the driving cavity. Then, before the fertilizer discharge pipe completely moves to the end of the fertilizer discharge cavity, the transmission rope is stretched upward by the clamp block and the contact cutter is cut off. No more tension is applied to the fertilizer guide pipe. Under the action of the torsion spring reset force, the fertilizer discharge assembly automatically resets. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the root fertilization component of the present invention;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure inside the semi-buried box of the present invention;

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the fertilizer dispensing assembly of the present invention;

[0034] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the fertilizer dispensing assembly of the present invention;

[0035] Figure 6 It is a structural stereogram of the ratchet wheel and ratchet tooth connection part of the present invention;

[0036] Figure 7 For the present invention Figure 6 Middle AA section view;

[0037] Figure 8 It is a schematic diagram of the internal structure of the ratchet of the present invention;

[0038] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fertilizer placing component of the present invention;

[0039] Fig.10 for Fig. 9 Middle BB section view.

[0040] In the figure:

[0041] 1. Elastic rope; 2. Semi-buried box; 3. Support cover; 4. Fertilizer guide pipe; 5. Dispensing pipe; 6. Rotating shaft; 7. Reset ring; 8. Torsion spring; 9. Pull-up spring; 10. Fertilizer outlet pipe; 11. Movable cavity; 12. Fertilizer outlet cavity; 13. Press wheel; 14. Extension pipe; 15. Bolt; 16. Fixed pulley; 17. Transmission frame; 18. Transmission rope; 19. Clamp; 20. Ratchet; 21. Support bar; 22. Drive cavity; 23. Ratchet; 24. Pushing tooth; 25. Positioning groove; 26. Reset spring; 27. Positioning pin; 28. Locking groove; 29. ​​Bottom plate; 30. Partition plate; 31. Fertilizer lowering area; 32. Fertilizer lowering pipe; 33. Fertilizer main pipe; 34. Fertilizer auxiliary pipe; 35. Retaining inclined block; 36. Drain hole; 37. Cutter. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0043] Example 1, reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides an automatic fertilizing device for fruit tree seedlings, which is used for fertilizing fruit tree seedlings during their development, and comprises:

[0044] Root fertilization components, the number of which is N, which are evenly distributed around the fruit tree seedlings in a ring shape, and the lower ends are buried in the soil;

[0045] Elastic rope 1, fixes the root fertilization component on the main stem of the fruit tree;

[0046] The root fertilization component comprises a semi-buried box 2 with openings at both ends, a fertilizer discharging assembly is installed at the bottom of the semi-buried box 2, an elliptical support cover 3 is connected inside the semi-buried box 2, a fertilizer guide pipe 4 is rotatably connected to the inner wall of the semi-buried box 2, a fertilizer discharging assembly is also installed on the fertilizer discharging assembly 4, and a power assembly is installed on the fertilizer discharging assembly; during the growth stage of the main stem of the fruit tree seedling, the power assembly pulls the fertilizer discharging assembly to deflect outwardly with the axis of the support cover 3 as the center to adjust the fertilization point, so as to fertilize the secondary roots extending outward of the fruit tree seedling;

[0047] The liquid fertilizer supply system automatically supplies water and fertilizer to the root fertilization components. The liquid fertilizer supply system includes a liquid fertilizer delivery pump. The infusion end of the liquid fertilizer delivery pump is connected to a main liquid pipe. The main liquid pipe is connected to a distribution pipe 5 for fertilizing fruit trees. The other end of the distribution pipe 5 is connected to a fertilizer output component. There are multiple distribution pipes 5, and a pressure relief valve is installed on the distribution pipe 5.

[0048] Specifically, when planting fruit tree seedlings, first dig a planting pit, place the fruit tree seedlings in the pit, place the semi-buried box 2 in the pit and then fill the pit with soil. When the fruit tree seedlings need to be fertilized, start the liquid fertilizer delivery pump to deliver the liquid fertilizer to each branch pipe 5 through the main liquid pipe, and keep the pressure in the main liquid pipe and the branch pipe 5 consistent through the pressure relief valve until the main liquid pipe and the branch pipe 5 are filled with liquid fertilizer at the same time. As the pressure in the pipe reaches the pressure relief value of the pressure relief valve, the liquid fertilizer enters the fertilizer output component through the branch pipe 5 to fertilize the roots of the fruit tree seedlings; when the main stem of the fruit tree seedling develops and grows vertically, the power component pulls the fertilizer output component and the fertilizer guide pipe 4 to deflect outward with the axis of the support cover 3 as the center to adjust the fertilization point, so that the fertilization point is not fixed and continues to extend outward.

[0049] Reference Figure 3-Figure 5 The fertilizer discharging assembly includes two rotating shafts 6 symmetrically connected to the outer tube wall of the fertilizer guiding tube 4, the two rotating shafts 6 overlap with the axis of the support cover 3, the other end of one of the rotating shafts 6 is rotatably connected to the inner box wall on the back side of the semi-buried box 2, and a reset ring 7 is fixedly sleeved on the shaft wall of the rotating shaft 6, and a torsion spring 8 is jointly arranged on the reset ring 7 and the inner box wall on the back side of the semi-buried box 2.

[0050] Specifically, when the fertilizer guide tube 4 is rotated by force, the rotating shaft 6 and the reset ring 7 are driven to rotate synchronously, and force is applied to the torsion spring 8 to deform the torsion spring 8, thereby storing energy in the torsion spring 8.

[0051] Reference Figure 1-Figure 3 A fertilizer discharging pipe 10 is sealed and slidably connected in the fertilizer guiding pipe 4 through an upper pull spring 9, and an arc-shaped movable cavity 11 and a fertilizer discharging cavity 12 are respectively provided on the top and bottom of the support cover 3. The lower end of the fertilizer discharging pipe 10 passes through the fertilizer guiding pipe 4 and is arranged through the fertilizer discharging cavity 12. A pressure wheel 13 is symmetrically rotatably connected on the outer tube wall of the fertilizer discharging pipe 10 outside the support cover 3, and the pressure wheel 13 is rollingly connected to the outer cover bottom of the support cover 3; an extension pipe 14 is limitedly slidably connected in the fertilizer guiding pipe 4, and the fertilizer guiding pipe 4 and the extension pipe 14 are connected by bolts 15. One end of the extension pipe 14 away from the fertilizer discharging pipe 10 extends to the outside of the fertilizer guiding pipe 4, and is connected to the liquid discharging pipe 5 through a flange, and the liquid discharging pipe 5 is arranged through the movable cavity 11.

[0052] Specifically, the position of the extension tube 14 in the fertilizer guiding tube 4 can be adjusted, and the extension tube 14 can be fixed in the position in the fertilizer guiding tube 4 by the bolt 15. The liquid fertilizer in the liquid distribution tube 5 enters the extension tube 14, and then enters the fertilizer outlet pipe 10 through the fertilizer guiding tube 4 and is discharged. The fertilizer outlet pipe 10 is intercepted by the pressure wheel 13 so that it will not be completely retracted into the support cover 3. When the fertilizer guiding tube 4 drives the fertilizer outlet pipe 10 to rotate, the pull-up spring 9 will deform as the fertilizer outlet pipe 10 expands and contracts.

[0053] Reference Figure 2-Figure 3 , Figure 5 The power assembly includes a fixed pulley 16 rotatably connected to the semi-buried box 2, and the fixed pulley 16 is arranged in the support cover 3. A bearing is sleeved on the outer tube wall of the extension tube 14 away from one end of the fertilizer outlet pipe 10, and a transmission frame 17 is connected to the outer ring wall of the bearing. A transmission rope 18 is movably provided on the transmission frame 17, and a clamping block 19 is detachably connected to the other end of the transmission rope 18. The transmission rope 18 is replaceable, and the transmission rope 18 is arranged to bypass the fixed pulley 16. The clamping block 19 is arranged against the main stem of the fruit tree through the elastic rope 1, and the transmission rope 18 is arranged to pass through the active cavity 11 obliquely, and a cutting knife 37 is connected in the active cavity 11, and the cutting knife 37 is located on the side of the elastic rope 1 away from the main stem of the fruit tree seedling.

[0054] Specifically, when the main stem of the fruit tree seedling develops and grows vertically, the clamp block 19 pulls the transmission rope 18 to move upward, and the other end of the transmission rope 18 pulls the transmission frame 17 to move toward the fixed pulley 16, so that the extension tube 14 pulls the fertilizer guide tube 4 to deflect around the rotating shaft 6, and pulls the fertilizer outlet tube 10 to deflect outward to adjust the fertilization point, so as to fertilize the secondary roots extending outward of the fruit tree seedling; as the main stem of the fruit tree seedling pulls the clamp block 19 to gradually rise, the transmission rope 18 continues to approach the cutting knife 37 until the cutting knife 37 cuts the transmission rope 18, and at this time the main stem no longer applies tension to the extension tube 14.

[0055] During use, when the main stem of the fruit tree seedling grows upward, the clamping block 19 pulls the transmission rope 18 to move upward, so that the extension tube 14 pulls the fertilizer guide tube 4 to deflect around the rotating shaft 6, and pulls the fertilizer discharge tube 10 to deflect and adjust the fertilization point. The extension tube 14 drives the pressure wheel 13 to roll on the bottom of the outer cover of the support cover 3, and causes the pull-up spring 9 to find corresponding deformation. At the same time, the fertilizer guide tube 4 also drives the rotating shaft 6 and the reset ring 7 to rotate synchronously, and applies force to the torsion spring 8 to deform the torsion spring 8, and completes the energy storage of the torsion spring 8. At this time, the staff only needs to regularly transport liquid fertilizer to the liquid distribution tube 5 through the liquid fertilizer delivery pump, and the fertilizer discharge tube 10 will The outflowing liquid fertilizer is used to fertilize the secondary roots of the fruit tree seedlings; and the fertilizer outlet pipe 10 will continuously adjust the position of the fertilization point as the main stem of the fruit tree seedlings grows vertically, and does not fertilize at a fixed point, so as to meet the supply of nutrients by the secondary roots extending outward during the development of the fruit tree seedlings, and avoid excessive concentration of nutrients in the local soil, which affects the normal growth of the fruit tree seedlings; at the same time, since the clamping block 19 is constantly rising, the inclination angle of the transmission rope 18 between the fixed pulley 16 and the clamping block 19 is continuously increased. Before the torsion spring 8 reaches the maximum deformation value, the cutting knife 37 cuts off the transmission rope 18. At this time, the main stem no longer applies tension to the extension tube 14, and the torsion spring 8 automatically resets.

[0056] At the same time, the deflection speed of the fertilizer guiding pipe 4 is adjusted by adjusting the length of the extension pipe 14 extending out of the fertilizer discharging pipe 10 .

[0057] Example 2, reference Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a ratchet 20 is fixedly sleeved on the shaft wall of another rotating shaft 6, and the ratchet 20 is divided into a toothed section and a smooth section. The toothed section has the same curvature as the fertilizer outlet cavity 12. A support bar 21 is connected to the inner cover top of the support cover 3. A driving cavity 22 is opened at the lower end of the support bar 21. A ratchet 23 is rotatably arranged in the driving cavity 22, and one end of the ratchet 23 extends to the outside of the driving cavity 22, and the ratchet 23 is meshed with the ratchet 20; a box door is installed on the front of the semi-buried box 2, and when the box door is opened, the ratchet 23 can be operated.

[0058] Specifically, when the fertilizer guiding pipe 4 and the rotating shaft 6 rotate, the ratchet wheel 20 will be driven to rotate synchronously. When the fertilizer discharging pipe 10 rotates to the end in the fertilizer discharging cavity 12, the tooth segment of the ratchet wheel 20 is no longer in contact with the ratchet teeth 23.

[0059] During use, when the main stem of the fruit tree seedling grows upward, the fertilizer guide tube 4 and the rotating shaft 6 rotate, which will drive the ratchet 20 to rotate synchronously; if it is necessary to fix the fertilizer guide tube 4 and the fertilizer outlet tube 10 at a fertilization point, when fertilizing at a fixed position, it is only necessary to separate the transmission rope 18 from the clamping block 19, and the fertilizer outlet tube 10 can be stopped at a fixed position by the ratchet 23 of the main ratchet 20. At this time, when the liquid fertilizer supply system is used to automatically supply fertilizer, continuous fertilization at a fixed position can be completed; when the fertilizer outlet tube 10 needs to continue to rotate later, the transmission rope 18 with the same length can be replaced to reconnect the transmission frame 17 and the clamping block 19. The remaining structure is the same as that of Example 1.

[0060] Example 3, reference Figure 6-Figure 8 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a pushing tooth 24 is connected to the smooth section, and the tooth length of the pushing tooth 24 is greater than the tooth length of the tooth section of the ratchet wheel 20. The pushing tooth 24 is located at the tail section of the tooth section. Positioning grooves 25 are symmetrically provided on both sides of the ratchet tooth 23. A reset spring 26 is connected to the bottom of the positioning groove 25. A positioning pin 27 is connected to the other end of the reset spring 26. The end of the positioning pin 27 away from the reset spring 26 is set to a hemispherical shape and extends to the cavity wall of the driving cavity 22. A locking groove 28 is provided on the cavity wall of the driving cavity 22 at a position corresponding to the positioning pin 27. After the pushing tooth 24 is in contact and disengaged from the ratchet tooth 23, the positioning pin 27 is inserted into the locking groove 28. In the figure, the reset spring 26 is in a compressed state.

[0061] Specifically, when the tooth segment of the ratchet 20 contacts the ratchet tooth 23, the rotation arc value of the ratchet tooth 23 in the driving cavity 22 is X, and when the pushing tooth 24 contacts the ratchet tooth 23, the rotation arc value of the ratchet tooth 23 in the driving cavity 22 is Y, X is less than Y, and Y is the maximum rotation arc of the ratchet tooth 23 itself in the driving cavity 22. When the ratchet tooth 23 rotates to the maximum value, the positioning pin 27 is inserted into the locking groove 28 under the elastic force of the reset spring 26.

[0062] During use, when the fertilizer guide tube 4 drives the rotating shaft 6 to rotate, the ratchet 20 rotates synchronously. In the process of continuous contact and disengagement between the tooth segment of the ratchet 20 and the ratchet 23, the ratchet 23 continuously deflects and resets until the tooth segment of the ratchet 20 and the ratchet 23 are completely disengaged. At this time, the fertilizer discharge tube 10 is about to move to the end in the fertilizer discharge cavity 12. As the fertilizer guide tube 4 drives the rotating shaft 6 to continue to rotate, the push tooth 24 contacts the ratchet 23, pushing the ratchet 23 to rotate to the maximum arc in the driving cavity 22. At this time, the positioning pin 27 is inserted into the locking groove 28 under the elastic force of the reset spring 26, and the position of the ratchet 23 in the driving cavity 22 is fixed. The ratchet 23 will no longer contact the ratchet wheel 20 (at this time, the fertilizer pipe 10 has not completely moved to the end of the fertilizer cavity 12), and the transmission rope 18 is cut off by contact with the cutter 37. Under the action of the reset force of the torsion spring 8, the fertilizer guide pipe 4 is automatically reset to avoid the torsion spring 8 being in a deformed state when no one is handling it, which may cause damage to the automatic fertilization device. The rest of the structure is the same as that of Example 2.

[0063] Example 4, reference Figure 9-10 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the fertilizer lowering assembly includes a bottom plate 29 detachably connected to the bottom of the semi-buried box 2, and the upper end of the bottom plate 29 is divided into N+1 fertilizer lowering areas 31 by N partitions 30, and a fertilizer lowering pipe 32 is connected through the bottom plate 29 of each fertilizer lowering area 31.

[0064] Specifically, the liquid fertilizer discharged from the fertilizer outlet pipe 10 is discharged into the corresponding fertilizer placement area 31 according to the position of the fertilizer outlet pipe 10 , and then flows into the soil through the fertilizer placement pipe 32 .

[0065] Reference Fig.10 A fertilization main pipe 33 is movablely provided on the lower fertilizer pipe 32, and a plurality of fertilization auxiliary pipes 34 are staggeredly connected on the pipe wall of the fertilization main pipe 33. A retaining inclined block 35 is connected to the position corresponding to each fertilization auxiliary pipe 34 on the inner pipe wall of the fertilization main pipe 33, and a drainage hole 36 is opened at the lowest point of the retaining inclined block 35.

[0066] Specifically, during the transportation stage, the fertilization main pipe 33 is disassembled from the lower fertilizer pipe 32 and then assembled in the planting area. The liquid fertilizer in the lower fertilizer pipe 32 first enters the fertilization main pipe 33 and flows downward along the inner wall. Part of the liquid fertilizer is discharged into the soil through the fertilization main pipe 33, and part of the liquid fertilizer is blocked by the interception bevel block 35 and discharged through the fertilization sub-pipe 34. After the liquid fertilizer supply system stops fertilizing, the liquid fertilizer remaining on the interception bevel block 35 is discharged through the leakage hole 36 to avoid waste caused by residue. The soil in the surrounding area of ​​the fertilization main pipe 33 is evenly fertilized, thereby improving the fertility absorption effect of the secondary roots.

[0067] During use, when planting fruit tree seedlings, the fertilizer main pipe 33 is mounted on the fertilizer lower pipe 32, and the liquid fertilizer discharged from the fertilizer outlet pipe 10 is discharged into the corresponding fertilizer lowering area 31 according to the position of the fertilizer outlet pipe 10, and then enters the corresponding fertilizer main pipe 33, and part of the liquid fertilizer is discharged into the soil through the fertilizer main pipe 33, and part of the liquid fertilizer is blocked by the interception inclined block 35 and discharged through the fertilizer auxiliary pipe 34, so that the soil in the surrounding area of ​​the fertilizer main pipe 33 is evenly fertilized, thereby improving the fertility absorption effect of the auxiliary roots. The rest of the structure is the same as that of Example 3.

[0068] Based on Examples 1-4, the working principle of the present invention is as follows:

[0069] During the transportation stage, the fertilizer main pipe 33 is disassembled from the fertilizer lower pipe 32 and assembled in the planting area. When the main stem of the fruit tree seedling grows upward, the clamping block 19 pulls the transmission rope 18 to move upward, so that the extension pipe 14 pulls the fertilizer guide pipe 4 to deflect around the rotating shaft 6, and pulls the fertilizer outlet pipe 10 to deflect. The extension pipe 14 drives the pressure wheel 13 to roll on the bottom of the outer cover of the support cover 3, and causes the pull-up spring 9 to find corresponding deformation. The fertilizer outlet pipe 10 continuously adjusts the fertilization point as the main stem of the fruit tree seedling grows. The staff only needs to regularly use the liquid fertilizer delivery pump to deliver liquid fertilizer to the liquid distribution pipe 5, and the fertilizer outlet pipe 10 will flow out liquid fertilizer to fertilize the secondary roots of the fruit tree seedlings. Fertilization is not performed at a fixed point, which meets the nutrient supply of the secondary roots extending outward during the development of the fruit tree seedlings, avoids excessive local nutrient concentration in the soil, and affects the normal growth of the fruit tree seedlings.

[0070] At the same time, the fertilizer guide tube 4 also drives the rotating shaft 6 and the reset ring 7 to rotate synchronously, applies force to the torsion spring 8 to deform the torsion spring 8, and completes the energy storage of the torsion spring 8. Moreover, when the rotating shaft 6 rotates, it also drives the ratchet 20 to rotate synchronously. As the ratchet 20 rotates synchronously, in the process of continuous contact and disengagement between the tooth segment of the ratchet 20 and the ratchet 23, the ratchet 23 continuously deflects and resets until the fertilizer discharge tube 10 is about to move to the end in the fertilizer discharge cavity 12, and the tooth segment of the ratchet 20 is completely disengaged from the ratchet 23. As the fertilizer guide tube 4 drives the rotating shaft 6 to continue to rotate, the pushing tooth 24 contacts with the ratchet 23, and the ratchet 23 is pushed to rotate to the maximum arc value in the driving cavity 22. At this time, the positioning The pin 27 is inserted into the locking groove 28 under the elastic force of the reset spring 26, fixing the position of the ratchet 23 in the driving cavity 22, and the ratchet 23 will no longer contact the ratchet 20 (at this time, the fertilizer discharge pipe 10 has not completely moved to the end of the fertilizer discharge cavity 12), and the transmission rope 18 is cut off by contact with the cutting knife 37 (before the fertilizer discharge pipe 10 completely moves to the end of the fertilizer discharge cavity 12), and the fertilizer guide pipe 4 is automatically reset under the action of the reset force of the torsion spring 8, so as to avoid the torsion spring 8 being continuously in a deformed state when no one is handling it, resulting in damage to the automatic fertilization device, and because the transmission rope 18 is cut off, no downward pulling force is applied to the clamping block 19, which does not affect the growth of the fruit tree seedlings.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An automatic fertilizing device for fruit tree seedlings, used for fertilizing fruit tree seedlings during their development, characterized in that: include: Root fertilization components, the number of which is N, which are distributed around the fruit tree seedlings and the lower ends are buried in the soil; An elastic rope (1) is used to fix the root fertilization component on the main stem of the fruit tree; The root fertilization component comprises a semi-buried box (2) with openings at both ends, a fertilizer dispensing assembly being arranged at the bottom of the semi-buried box (2), an elliptical support cover (3) being connected inside the semi-buried box (2), a fertilizer guide pipe (4) being rotatably connected to the inner wall of the semi-buried box (2), a fertilizer dispensing assembly being further arranged on the fertilizer dispensing pipe (4), and a power assembly being arranged on the fertilizer dispensing assembly; during the growth stage of the main stem of the fruit tree seedling, the power assembly pulls the fertilizer dispensing assembly to deflect outwards with the axis of the support cover (3) as the center to adjust the fertilization point, so as to fertilize the secondary roots of the fruit tree seedling extending outwards; Liquid fertilizer supply system automatically supplies water and fertilizer to the root fertilization components.

2. The automatic fertilization device for fruit tree seedlings according to claim 1, characterized in that: The liquid fertilizer supply system comprises a liquid fertilizer delivery pump, the delivery end of the liquid fertilizer delivery pump is connected to a main liquid pipe, the main liquid pipe is connected to a liquid distribution pipe (5) for fertilizing fruit trees, the other end of the liquid distribution pipe (5) is connected to a fertilizer output component, and a pressure relief valve is arranged on the liquid distribution pipe (5).

3. The automatic fertilization device for fruit tree seedlings according to claim 1, characterized in that: The fertilizer discharging assembly comprises two rotating shafts (6) symmetrically connected to the outer tube wall of the fertilizer guiding tube (4), the two rotating shafts (6) overlap with the axis of the support cover (3), the other end of one of the rotating shafts (6) is rotatably connected to the back inner box wall of the semi-buried box (2), and a reset ring (7) is fixedly sleeved on the shaft wall of the rotating shaft (6), and a torsion spring (8) is commonly provided on the reset ring (7) and the back inner box wall of the semi-buried box (2).

4. The automatic fertilization device for fruit tree seedlings according to claim 2, characterized in that: A fertilizer outlet pipe (10) is sealed and slidably connected inside the fertilizer guide pipe (4) via an upward pull spring (9); the top and bottom of the support cover (3) are respectively provided with an arc-shaped movable cavity opening (11) and a fertilizer outlet cavity opening (12); the lower end of the fertilizer outlet pipe (10) passes through the fertilizer guide pipe (4) and the fertilizer outlet cavity opening (12); a pressure wheel (13) is symmetrically rotatably connected to the outer tube wall of the fertilizer outlet pipe (10) located outside the support cover (3), and the pressure wheel (13) is rollingly connected to the outer cover bottom of the support cover (3); An extension pipe (14) is connected to the fertilizer guide pipe (4) in a limited sliding manner. The fertilizer guide pipe (4) and the extension pipe (14) are connected via a bolt (15). One end of the extension pipe (14) away from the fertilizer outlet pipe (10) extends outside the fertilizer guide pipe (4) and is connected to the liquid distribution pipe (5) via a flange. The liquid distribution pipe (5) is arranged to pass through the movable cavity (11).

5. The automatic fertilization device for fruit tree seedlings according to claim 4, characterized in that: The power assembly comprises a fixed pulley (16) rotatably connected to the semi-buried box (2), and the fixed pulley (16) is arranged in the support cover (3), a bearing is sleeved on the outer tube wall of the extension tube (14) at a position away from one end of the fertilizer outlet tube (10), a transmission frame (17) is connected to the outer ring wall of the bearing, a transmission rope (18) is movably clamped on the transmission frame (17), the other end of the transmission rope (18) is detachably connected to a clamping block (19), the transmission rope (18) is arranged around the fixed pulley (16), the clamping block (19) is arranged close to the main stem of the fruit tree through the elastic rope (1), the transmission rope (18) is arranged obliquely through the movable cavity (11), and a cutting knife (37) is connected in the movable cavity (11), and the cutting knife (37) is located on the side of the elastic rope (1) away from the main stem of the fruit tree seedling.

6. The automatic fertilization device for fruit tree seedlings according to claim 3, characterized in that: A ratchet (20) is fixedly sleeved on the shaft wall of the other rotating shaft (6), the ratchet (20) is divided into a toothed section and a smooth section, the toothed section and the fertilizer outlet cavity (12) have the same curvature, the inner cover top of the support cover (3) is connected to a support bar (21), a driving cavity (22) is provided at the lower end of the support bar (21), a ratchet (23) is rotatably provided in the driving cavity (22), one end of the ratchet (23) extends outside the driving cavity (22), and the ratchet (23) is meshed with the ratchet (20).

7. The automatic fertilization device for fruit tree seedlings according to claim 6, characterized in that: The smooth section is connected with a pushing tooth (24), the tooth length of the pushing tooth (24) is greater than the tooth length of the tooth section of the ratchet wheel (20), the pushing tooth (24) is located at the tail section of the tooth section, positioning grooves (25) are symmetrically provided on both sides of the ratchet tooth (23), the bottom of the positioning groove (25) is connected with a reset spring (26), the other end of the reset spring (26) is connected with a positioning pin (27), the end of the positioning pin (27) away from the reset spring (26) is set to be hemispherical and extends to the cavity wall of the driving cavity opening (22), a locking groove (28) is provided on the cavity wall of the driving cavity opening (22) at a position corresponding to the positioning pin (27), after the pushing tooth (24) is in contact with and disengaged from the ratchet tooth (23), the positioning pin (27) is inserted into the locking groove (28).

8. The automatic fertilization device for fruit tree seedlings according to claim 7, characterized in that: The fertilizer lowering assembly comprises a bottom plate (29) detachably connected to the bottom of the semi-buried box (2); the upper end of the bottom plate (29) is divided into N+1 fertilizer lowering areas (31) by N partitions (30); and a fertilizer lowering pipe (32) is connected through the bottom plate (29) of each fertilizer lowering area (31).

9. The automatic fertilization device for fruit tree seedlings according to claim 8, characterized in that: The lower fertilizer pipe (32) is provided with a fertilization main pipe (33) on the movable card, and a plurality of fertilization auxiliary pipes (34) are staggeredly connected on the pipe wall of the fertilization main pipe (33). A retaining inclined block (35) is connected to the position corresponding to each fertilization auxiliary pipe (34) on the inner pipe wall of the fertilization main pipe (33), and a drainage hole (36) is opened at the lowest point of the retaining inclined block (35).

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