A liquid fertilizer hole deep application machine with adjustable row spacing and fertilizer depth

Abstract

The utility model provides a kind of liquid fertilizer hole deep application tool with adjustable row spacing and fertilization depth, including frame, total fertilizer tank and power drive mechanism are installed on frame;A set of horizontal reciprocating mechanism and hole-punching fertilization mechanism are provided on the left and right sides of frame, and power drive mechanism provides power for the horizontal reciprocating mechanism on the left and right sides of frame;Hole-punching fertilization mechanism includes sub fertilizer tank, air cylinder and inductive control piece, sub fertilizer tank is installed on air cylinder, and sub fertilizer tank is connected with total fertilizer tank by fertilizer delivery hose, the bottom of sub fertilizer tank is provided with fertilizer leakage opening, and sliding valve plate is arranged at the fertilizer leakage opening of sub fertilizer tank;The utility model is driven by power drive mechanism, so that horizontal reciprocating mechanism drives fertilizer injection needle to reciprocate in horizontal direction, to offset the relative speed of fertilizer injection needle when it is punched into soil in the direction of tractor advancing;The utility model realizes that fertilizer injection needle punches hole at zero speed, reduces the width of hole mouth, prevents excessive evaporation of liquid fertilizer, and improves fertilization performance.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a liquid fertilizer hole deep application machine with adjustable row spacing and fertilization depth. Background Technology

[0002] Liquid fertilizer deep hole application is a fertilization technique that uses fertilizer applicators to precisely and quantitatively apply liquid fertilizer into the soil near the crop roots. Compared with traditional solid fertilizer application, it can effectively improve fertilizer utilization, promote crop absorption, reduce the volatilization and loss of effective fertilizer components, and increase crop yield. However, the relative speed between the fertilizer spray needle and the tractor's forward direction when the existing equipment penetrates the soil can cause the hole opening to be too wide, resulting in excessive volatilization of liquid fertilizer and affecting crop yield. Summary of the Invention

[0003] The purpose of this invention is to provide a liquid fertilizer deep application machine with adjustable row spacing and fertilization depth, so as to solve the technical problem that the relative speed between the fertilizer spray needle penetrating the soil and the forward direction of the existing liquid fertilizer deep application machine results in an excessively wide hole opening.

[0004] To achieve the above objectives, the technical solution of the liquid fertilizer deep application machine provided by the present invention is as follows: the liquid fertilizer deep application machine includes a frame, on which a total fertilizer tank and a power drive mechanism are installed;

[0005] A set of horizontal reciprocating motion mechanism and hole-punching fertilizer application mechanism are provided on both the left and right sides of the frame, and the power drive mechanism provides power to the horizontal reciprocating motion mechanism on both the left and right sides of the frame.

[0006] The hole-punching fertilization mechanism includes a sub-fertilizer box, a cylinder, and a sensor control component. The sub-fertilizer box is mounted on the cylinder and is connected to the main fertilizer box via a fertilizer delivery hose. A fertilizer leakage port is located at the bottom of the sub-fertilizer box, and a sliding valve plate is installed at the leakage port. The upper half of the sliding valve plate is the fertilizer delivery section, and the lower half is the sealing section. The fertilizer delivery section has a fertilizer delivery port. When the sealing section aligns with the leakage port, it seals the leakage port. When the fertilizer delivery section aligns with the leakage port, liquid fertilizer from the sub-fertilizer box flows into the fertilizer delivery port from the leakage port. The push rod end of the cylinder is inclined downwards, and a fertilizer spraying needle is installed at the push rod end. The fertilizer delivery port is connected to the fertilizer spraying needle via a rigid fertilizer delivery pipe.

[0007] The horizontal reciprocating motion mechanism is used to drive the cylinder or the sub-fertilizer box to reciprocate in the front-back horizontal direction. The sensing control component is used to sense when the cylinder or the sub-fertilizer box is in the foremost position during the front-back horizontal reciprocating motion, and at this time, the sensing control component controls the push rod of the cylinder to extend.

[0008] Furthermore, the horizontal reciprocating motion mechanism includes a rotating shaft, an upper sliding groove, and a side sliding groove. An upper slider is provided on the upper sliding groove, and the upper slider can slide horizontally back and forth along the upper sliding groove. The side sliding groove is located below the upper sliding groove, and two side sliders are provided on the side sliding groove. Both side sliders can slide horizontally back and forth along the side sliding groove. The upper end of the cylinder is fixedly connected to the upper slider through an upper fixing rod, and the lower end of the cylinder is connected to the two side sliders through two side fixing rods.

[0009] The shaft is rotatably mounted on the frame, a first crank is mounted on the shaft, a short shaft is provided on the upper slider, a second crank is mounted on the end of the short shaft, and the ends of the first crank and the second crank are hinged together.

[0010] The power drive mechanism is connected to the rotating shaft transmission.

[0011] Furthermore, the sensing control component includes a solenoid valve, a return spring, and a linkage rod. The solenoid valve and linkage rod are mounted on the frame. A pressure plate is installed at one end of the linkage rod, and the other end of the linkage rod is in contact with the solenoid valve switch. The return spring is located on the linkage rod. When the horizontal reciprocating motion mechanism drives the cylinder to move to the forward position, the upper fixed rod pushes and squeezes the pressure plate. The pressure plate drives the linkage rod to move, causing the other end of the linkage rod to touch the solenoid valve switch. The return spring is used to reset the linkage rod; the solenoid valve is used to control the cylinder.

[0012] Furthermore, wheels and wheel axles are mounted on the bottom of the frame. The wheels are mounted on the wheel axles. The power drive mechanism includes an upper drive shaft and a lower drive shaft. A first sprocket is mounted on the wheel axle. The upper and lower drive shafts are rotatably mounted on the frame. A second sprocket is mounted on the lower drive shaft. A chain is provided between the first and second sprockets. The lower drive shaft and the upper drive shaft are driven by a drive belt. Two lower gears are mounted on the upper drive shaft.

[0013] Both sets of horizontal reciprocating motion mechanisms have upper gears installed on their rotating shafts, and two lower gears respectively cooperate with two upper gears to achieve power transmission.

[0014] Furthermore, a stirring shaft is rotatably installed inside the total fertilizer tank, and several stirring blades are provided on the stirring shaft. The rotating shaft is connected to the end of the stirring shaft via a belt.

[0015] Furthermore, a flow control valve is installed at the fertilizer inlet.

[0016] Furthermore, a mounting bracket is installed on the frame, and the horizontal reciprocating motion mechanism is set on the mounting bracket. The top of the mounting bracket has a first mounting plate, and the first mounting plate is provided with a mounting seat and two sets of sliding grooves.

[0017] The plant spacing adjustment mechanism includes two sliding rods, two sets of transverse electric push rods, and two sliding plates. The two sliding rods are fixed to the lower part of the mounting frame. Two sliding sleeves are provided on the side sliding groove. The side sliding groove can slide left and right on the two sliding rods through the two sliding sleeves. The two sliding plates are slidably installed on the two sets of sliding grooves respectively. The seat of the two sets of transverse electric push rods is installed on the mounting base. The push rod ends of the two sets of transverse electric push rods are fixedly connected to the two sliding plates respectively. Under the push of the transverse electric push rods, the sliding plates can move left and right on the sliding groove.

[0018] The rotating shaft and upper slide groove of the horizontal reciprocating motion mechanism are both set on the sliding plate; the outer wheel surface of the lower gear is wider than that of the upper gear.

[0019] Furthermore, the bottom of the mounting bracket has a second mounting plate, two sliding rods are fixed to the bottom surface of the second mounting plate, the upper drive shaft is mounted on the upper surface of the second mounting plate, four vertical fixed shafts are fixed at the four corners of the second mounting plate, and four mounting ears are fixed at the four corners of the top of the frame. The mounting ears have through holes, and the four vertical fixed shafts are respectively inserted into the through holes of the four mounting ears.

[0020] The fertilization depth adjustment mechanism includes several sets of vertical electric push rods. The base of the vertical electric push rod is mounted on the frame, and the push rod end of the vertical electric push rod is mounted on the second mounting plate. Under the push of the vertical electric push rod, the mounting frame can move in the vertical direction through the cooperation of four vertical fixed shafts and four mounting ears. The transmission belt is an elastic transmission belt.

[0021] Furthermore, a parallel four-bar linkage is provided on the front side of the frame. The parallel four-bar linkage includes a three-point suspension plate, a connecting plate, a limiting and fixing shaft, and two sets of parallel four-bar structures. The connecting plate is fixed to the front side of the frame, and the three-point suspension plate is connected to the connecting plate through two sets of parallel four-bar structures. The two sets of parallel four-bar structures are symmetrically arranged on the left and right.

[0022] Each set of parallel four-bar structure includes a limiting plate and two connecting rods. Both ends of each connecting rod are mounted on the three-point suspension plate and the connecting plate by means of hinges. The two connecting rods are arranged parallel to each other vertically. The lower connecting rod has an elongated hole. One end of the limiting plate is hinged to the three-point suspension plate, and the other end of the limiting plate is provided with a sliding column. The sliding column can slide in the elongated hole of the lower connecting rod.

[0023] The limiting and fixing shaft is fixed between two limiting plates.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a tractor connected to a three-point suspension plate to drive the entire machine forward. The design of the parallel four-bar linkage ensures that the depth of the fertilizer spraying needle penetrating the soil is consistent and unaffected by changes in terrain. During forward movement, the first sprocket sequentially drives the second sprocket, the elastic transmission belt, the lower gear, and the upper gear to rotate. The upper gear is coaxial with the first crank, thereby causing the upper slider to slide within the upper groove, realizing the reciprocating motion of the fertilizer spraying needle in the horizontal direction, thus counteracting the force of the fertilizer spraying needle. The relative speed between the spray needle and the tractor's forward direction when the needle penetrates the soil; when the spray needle reaches the front end of the mechanism, it squeezes the pressure plate, causing the pressure plate to deform and triggering the solenoid valve switch once. The solenoid valve controls the cylinder to push the spray needle out once. At this time, the fertilizer inlet of the sliding valve plate connects with the fertilizer outlet of the sub-fertilizer box. Liquid fertilizer will be connected to the spray needle through the sub-fertilizer box, flow control valve, and rigid fertilizer delivery pipe, achieving one-time fertilizer spraying. This invention achieves zero-speed piercing of the hole by the spray needle, reduces the width of the hole opening, prevents excessive volatilization of liquid fertilizer, and improves the performance of fertilization operations. Attached Figure Description

[0025] Figure 1 This is an isometric view of the liquid fertilizer deep application device provided by the present invention;

[0026] Figure 2 Another perspective is shown in the isometric view of the liquid fertilizer deep application device provided by this invention.

[0027] Figure 3 A schematic diagram of the structure of the liquid fertilizer deep application tool provided by the present invention after removing the parallel four-bar linkage;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram showing the installation location of the sensing control component;

[0030] Figure 6 This is a schematic diagram of the sliding valve plate.

[0031] Figure 7 This is a schematic diagram of the total fertilizer container structure;

[0032] Figure 8 This is a schematic diagram of a parallel four-bar linkage. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the process or method that includes said element.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the main body, or it can be separately arranged from the main body and connected to the main body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0038] The present invention will be further described in detail below with reference to the embodiments.

[0039] like Figure 1-8 As shown, a specific embodiment 1 of the liquid fertilizer deep application device provided by the present invention is as follows:

[0040] In this embodiment, the liquid fertilizer deep application machine includes a frame 1, on which a total fertilizer tank 2 and a power drive mechanism are installed;

[0041] A set of horizontal reciprocating motion mechanism and hole-punching fertilizer mechanism are provided on both the left and right sides of the frame 1. The power drive mechanism provides power to the horizontal reciprocating motion mechanism on both the left and right sides of the frame 1.

[0042] The hole-punching fertilization mechanism includes a sub-fertilizer box 3, a cylinder 4, and a sensor control component. The sub-fertilizer box 3 is mounted on the cylinder 4 and is connected to the main fertilizer box 2 via a fertilizer delivery hose 5. A fertilizer leakage port is provided at the bottom of the sub-fertilizer box 3, and a sliding valve plate 6 is installed at the leakage port. The sliding valve plate 6 can slide at the leakage port. The upper half of the sliding valve plate 6 is the fertilizer delivery section 7, and the lower half is the sealing section 8. The fertilizer delivery section 7 has a fertilizer delivery port 9. When the sliding valve plate 6 is in its normal position, the sealing part 8 of the sliding valve plate 6 corresponds to the fertilizer leakage port, and the sealing part 8 can seal the fertilizer leakage port. When the sliding valve plate 6 slides down, the fertilizer conveying part 7 of the sliding valve plate 6 moves to the fertilizer leakage port, and the liquid fertilizer in the sub-fertilizer tank 3 can flow from the fertilizer leakage port into the fertilizer conveying port 9. The push rod end of the cylinder 4 is inclined downward, and the push rod end of the cylinder 4 is equipped with a fertilizer spraying needle 10. The fertilizer conveying port 9 is connected to the fertilizer spraying needle 10 through a rigid fertilizer conveying pipe 11.

[0043] The horizontal reciprocating motion mechanism is used to drive the cylinder 4 to reciprocate in the horizontal direction. The sensing control component is used to sense when the cylinder 4 or the sub-fertilizer box 3 is in the foremost position during the horizontal reciprocating motion. At this time, the sensing control component controls the push rod of the cylinder 4 to push out. The fertilizer spraying needle 10 is pushed down by the push rod of the cylinder 4 and then pierces into the soil. At the same time, the fertilizer spraying needle 10 pulls the sliding valve plate 6 down through the rigid fertilizer delivery pipe 11, so that the fertilizer delivery part 7 corresponds to the fertilizer leakage port. The liquid fertilizer in the sub-fertilizer box 3 will pass through the fertilizer delivery port 9 on the sliding valve plate 6 and the rigid fertilizer delivery pipe 11, and finally be sprayed out from the fertilizer spraying needle 10 to achieve one application of fertilizer. Preferably, a flow control valve 12 can be installed at the fertilizer delivery port 9 to change the amount of fertilizer applied at one time. After the fertilizer spraying is completed, the fertilizer spraying needle 10 returns to its original position and drives the sliding valve plate 6 to slide upward through the rigid fertilizer delivery pipe 11. The sealing part 8 seals the fertilizer leakage port of the sub-fertilizer box 3 again.

[0044] To achieve the function of the aforementioned horizontal reciprocating motion mechanism, the mechanism includes a rotating shaft 13, an upper sliding groove 14, and a side sliding groove 15. An upper slider 16 is mounted on the upper sliding groove 14, and the upper slider 16 can slide horizontally back and forth along the upper sliding groove 14. The side sliding groove 15 is located below the upper sliding groove 14, and two side sliders 17 are mounted on the side sliding groove 15. Both side sliders 17 can slide horizontally back and forth along the side sliding groove 15. The upper end of the cylinder 4 is fixedly connected to the upper slider 16 via an upper fixing rod 18, and the lower end of the cylinder 4 is connected to the two side sliders 17 via two side fixing rods 19. The cylinder 4 can move horizontally in the back and forth direction via the upper slider 16 and the two side sliders 17.

[0045] The rotating shaft 13 is rotatably mounted on the frame 1. A first crank 20 is mounted on the rotating shaft 13. A short shaft 21 is provided on the upper slider 16. A second crank 23 is mounted on the end of the short shaft 21. The ends of the first crank 20 and the second crank 23 are hinged together.

[0046] The power drive mechanism is connected to the rotating shaft 13. The power drive mechanism drives the rotating shaft 13 to rotate. When the rotating shaft 13 rotates, it drives the first crank 20 to rotate. The first crank 20 pulls the second crank 23 to form a "crank rocker mechanism". Ultimately, it drives the second short shaft 21, the short shaft 21 and the upper slider 16 to reciprocate on the upper slide groove 14. The cylinder 4 is connected to the upper slider 16 through the upper fixed rod 18. Therefore, the cylinder 4 moves with the upper slider 16 to realize the reciprocating motion of the fertilizer spraying needle 10 in the horizontal direction. When the fertilizer spraying needle 10 is inserted into the soil, it cancels the relative speed between the fertilizer spraying needle 10 and the forward direction of the frame 1, realizing zero-speed insertion.

[0047] To achieve the function of the aforementioned sensing control component, the sensing control component includes a solenoid valve 24, a return spring 25, and a linkage rod 26. The solenoid valve 24 and the linkage rod 26 are mounted on the frame 1. A pressure plate 27 is mounted on one end of the linkage rod 26, and the other end of the linkage rod 26 is in contact with the switch of the solenoid valve 24. The return spring 25 is located on the linkage rod 26. When the horizontal reciprocating motion mechanism drives the cylinder 4 to move to the forward position, the upper fixed rod 18 pushes and squeezes the pressure plate 27. The pressure plate 27 drives the linkage rod 26 to move, the return spring 25 is compressed, and the other end of the linkage rod 26 touches the switch of the solenoid valve 24. The solenoid valve 24 is used to control the cylinder 4. The push rod of the cylinder 4 extends to push the fertilizer spray needle 10 to pierce the soil. When the cylinder 4 moves backward, the upper fixed rod 18 moves away from the pressure plate 27, the return spring 25 resets the linkage rod 26, the cylinder 4 retracts, and the fertilizer spray needle 10 is retracted.

[0048] To achieve the functions of the aforementioned power drive mechanism, wheels 28 and wheel axles 29 are installed at the bottom of the frame 1. The wheels 28 are mounted on the wheel axles 29. The power drive mechanism includes an upper drive shaft 30 and a lower drive shaft 31. A first sprocket 32 ​​is mounted on the wheel axle 29. The upper drive shaft 30 and the lower drive shaft 31 are rotatably mounted on the frame 1. A second sprocket 33 is mounted on the lower drive shaft 31. A chain 34 is provided between the first sprocket 32 ​​and the second sprocket 33. The lower drive shaft 31 and the upper drive shaft 30 are driven by a transmission belt 35. Two lower gears 36 are mounted on the upper drive shaft 30.

[0049] Both sets of horizontal reciprocating motion mechanisms have upper gears 37 mounted on their rotating shafts 13, and two lower gears 36 respectively cooperate with the two upper gears 37 to achieve power transmission.

[0050] During operation, the wheel 28 rotates, and the wheel axle 29 drives the lower drive shaft 31 to rotate through the first sprocket 32, chain 34 and second sprocket 33. The lower drive shaft 31 drives the upper drive shaft 30 to rotate through the transmission belt 35. The two lower gears 36 follow the upper drive shaft 30 to rotate. The two lower gears 36, through their engagement with the two upper gears 37, transmit power to the two rotating shafts 13, ultimately providing power to the two sets of horizontal reciprocating motion mechanisms.

[0051] Preferably, a stirring shaft 38 is rotatably installed inside the total fertilizer tank 2, and a plurality of stirring blades 39 are provided on the stirring shaft 38. The rotating shaft 13 is connected to the end of the stirring shaft 38 through a belt 40. The stirring shaft 38 is driven to rotate by the rotating shaft 13 and the belt 40, so that the stirring blades 39 can stir the liquid fertilizer in the total fertilizer tank 2.

[0052] Specific embodiment 2 of the liquid fertilizer deep application device provided by the present invention:

[0053] The difference between this embodiment and embodiment 1 is that this embodiment can adjust fertilization according to different plant spacing crops. Specifically, a mounting frame 41 is installed on the frame 1, and the horizontal reciprocating motion mechanism is set on the mounting frame 41. The top of the mounting frame 41 has a first mounting plate 42, and the first mounting plate 42 is provided with a mounting seat 43 and two sets of sliding grooves 44.

[0054] The plant spacing adjustment mechanism includes two sliding rods 45, two sets of transverse electric push rods 46, and two sliding plates 47. The two sliding rods 45 are fixed to the lower part of the mounting frame 41. Two sliding sleeves 60 are provided on the side sliding groove 15. The side sliding groove 15 can slide left and right on the two sliding rods 45 through the two sliding sleeves 60. The two sliding plates 47 are respectively slidably installed on the two sets of sliding grooves 44. The seat of the two sets of transverse electric push rods 46 is installed on the mounting base 43. The push rod ends of the two sets of transverse electric push rods 46 are respectively fixedly connected to the two sliding plates 47. Under the push of the transverse electric push rods 46, the sliding plates 47 can move left and right on the sliding grooves 44.

[0055] The rotating shaft 13 and the upper slide groove 14 of the horizontal reciprocating motion mechanism are both set on the sliding plate 47. It should be noted that since the lower gear 36 is mounted on the upper drive shaft 30, and the upper drive shaft 30 is set on the frame 1, the position of the rotating shaft 13 will inevitably change when the position of the sliding plate 47 is adjusted. The upper gear 37 is also set on the rotating shaft, so the positions of the upper gear 37 and the lower gear 36 will change. Therefore, the outer wheel surface of the lower gear 36 needs to be set wider than the outer wheel surface of the upper gear 37 to adapt to the position change of the upper gear 37 and keep it in contact with the lower gear 36.

[0056] Two sets of transverse electric push rods 46 can make two upper sliding plates 47 slide in the lateral direction, which ultimately drives two sets of cylinders 4 and fertilizer spray needles 10 to move in the lateral direction, thereby changing the distance between the two sets of fertilizer spray needles 10, that is, realizing fertilization of crops with different plant spacing.

[0057] Specific embodiment 3 of the liquid fertilizer deep application device provided by the present invention:

[0058] The difference between this embodiment and embodiment 2 is that this embodiment adds a fertilization depth adjustment mechanism on the basis of embodiment 2 to realize the initial height adjustment of the fertilizer spraying needle 10. Specifically, the bottom of the mounting frame 41 has a second mounting plate 48, two sliding rods 45 are fixed to the bottom surface of the second mounting plate 48, the upper drive shaft 30 is installed on the upper surface of the second mounting plate 48, four vertical fixing shafts 49 are fixed at the four corners of the second mounting plate 48, and four mounting ears 50 are fixed at the four corners of the top of the frame 1. The mounting ears 50 have through holes, and the four vertical fixing shafts 49 are respectively inserted into the through holes of the four mounting ears 50.

[0059] The fertilization depth adjustment mechanism includes several sets of vertical electric push rods 51. The seat of the vertical electric push rod 51 is mounted on the frame 1, and the push rod end of the vertical electric push rod 51 is mounted on the second mounting plate 48. Under the push of the vertical electric push rod 51, the mounting frame 41 can move vertically through the cooperation of four vertical fixed shafts 49 and four mounting ears 50. The cylinder 4 is mounted on the mounting frame 41, and finally the fertilizer spraying needle 10 on the cylinder 4 adjusts the height up and down with the mounting frame 41. It should be noted that since the lower drive shaft 31 is set on the frame 1, and the upper drive shaft 30 is located on the second mounting plate 48, the distance between the upper drive shaft 30 and the lower drive shaft 31 changes when the height of the mounting frame 41 is adjusted. Therefore, the transmission belt 35 between the upper drive shaft 30 and the lower drive shaft 31 is adjusted to be an elastic transmission belt 35 to adapt to the change in the distance between the upper drive shaft 30 and the lower drive shaft 31.

[0060] Specific embodiment 4 of the liquid fertilizer deep application device provided by the present invention:

[0061] The difference between this embodiment and embodiment 1 is that: a parallel four-bar linkage contouring mechanism 52 is provided on the front side of the frame 1. The parallel four-bar linkage contouring mechanism 52 includes a three-point suspension plate 53, a connecting plate 54, a limiting and fixing shaft 55, and two sets of parallel four-bar structures. The connecting plate 54 is fixed to the front side of the frame 1. The three-point suspension plate 53 is connected to the tractor. The three-point suspension plate 53 is connected to the connecting plate 54 through two sets of parallel four-bar structures, and the two sets of parallel four-bar structures are symmetrically arranged on the left and right.

[0062] Each set of parallel four-bar structures includes a limiting plate 56 and two connecting rods 57. Both ends of each connecting rod 57 are hinged to the three-point suspension plate 53 and the connecting plate 54. The two connecting rods 57 are arranged parallel to each other vertically. The lower connecting rod 57 has an elongated hole 59. One end of the limiting plate 56 is hinged to the three-point suspension plate 53. The hinge point between the limiting plate 56 and the three-point suspension plate 53 and the end of the upper connecting rod 57 are the same as the hinge point of the three-point suspension plate 53. The other end of the limiting plate 56 is provided with a sliding post 58, which can slide in the elongated hole 59 of the lower connecting rod 57.

[0063] The limiting and fixing shaft 55 is fixed between the two limiting plates 56.

[0064] The parallel four-bar contouring mechanism 52 in this embodiment ensures the consistency of the depth to which the two sets of fertilizer spraying needles 10 penetrate the soil, that is, it is not affected by changes in terrain.

Claims

1. A liquid fertilizer deep-hole application machine, characterized in that: Including the chassis, on which the mains fuselage box and power drive mechanism are mounted; A set of horizontal reciprocating motion mechanism and hole-punching fertilizer application mechanism are provided on both the left and right sides of the frame, and the power drive mechanism provides power to the horizontal reciprocating motion mechanism on both the left and right sides of the frame. The hole-punching fertilization mechanism includes a sub-fertilizer box, a cylinder, and a sensor control component. The sub-fertilizer box is mounted on the cylinder and is connected to the main fertilizer box via a fertilizer delivery hose. A fertilizer leakage port is located at the bottom of the sub-fertilizer box, and a sliding valve plate is installed at the leakage port. The upper half of the sliding valve plate is the fertilizer delivery section, and the lower half is the sealing section. The fertilizer delivery section has a fertilizer delivery port. When the sealing section aligns with the leakage port, it seals the leakage port. When the fertilizer delivery section aligns with the leakage port, liquid fertilizer from the sub-fertilizer box flows into the fertilizer delivery port from the leakage port. The push rod end of the cylinder is inclined downwards, and a fertilizer spraying needle is installed at the push rod end. The fertilizer delivery port is connected to the fertilizer spraying needle via a rigid fertilizer delivery pipe. The horizontal reciprocating motion mechanism is used to drive the cylinder and the fertilizer box to reciprocate in the front-back horizontal direction. The sensing control component is used to sense that the cylinder and the fertilizer box are in the foremost position when they reciprocate in the front-back horizontal direction, and at this time the sensing control component controls the push rod of the cylinder to extend. The horizontal reciprocating motion mechanism includes a rotating shaft, an upper sliding groove, and a side sliding groove. An upper slider is provided on the upper sliding groove, and the upper slider can slide horizontally back and forth along the upper sliding groove. The side sliding groove is located below the upper sliding groove, and two side sliders are provided on the side sliding groove. Both side sliders can slide horizontally back and forth along the side sliding groove. The upper end of the cylinder is fixedly connected to the upper slider through an upper fixing rod, and the lower end of the cylinder is connected to the two side sliders through two side fixing rods. The shaft is rotatably mounted on the frame, a first crank is mounted on the shaft, a short shaft is provided on the upper slider, a second crank is mounted on the end of the short shaft, and the ends of the first crank and the second crank are hinged together. The power drive mechanism is connected to the rotating shaft transmission; The sensing control component includes a solenoid valve, a return spring, and a linkage rod. The solenoid valve and linkage rod are mounted on the frame. A pressure plate is installed at one end of the linkage rod, and the other end of the linkage rod is in contact with the solenoid valve's switch. The return spring is located on the linkage rod. When the horizontal reciprocating motion mechanism drives the cylinder to its forward position, the upper fixed rod pushes and squeezes the pressure plate. The pressure plate drives the linkage rod to move, causing the other end of the linkage rod to activate the solenoid valve's switch. The return spring is used to reset the linkage rod. The solenoid valve is used to control the cylinder.

2. The liquid fertilizer deep-hole application machine according to claim 1, characterized in that: The bottom of the frame is equipped with wheels and wheel axles. The wheels are mounted on the wheel axles. The power drive mechanism includes an upper drive shaft and a lower drive shaft. A first sprocket is mounted on the wheel axle. The upper and lower drive shafts are rotatably mounted on the frame. A second sprocket is mounted on the lower drive shaft. A chain is provided between the first and second sprockets. The lower drive shaft and the upper drive shaft are driven by a drive belt. Two lower gears are mounted on the upper drive shaft. Both sets of horizontal reciprocating motion mechanisms have upper gears mounted on their shafts, and two lower gears respectively cooperate with the two upper gears to achieve power transmission.

3. The liquid fertilizer deep-hole application machine according to claim 2, characterized in that: The main fertilizer tank is equipped with a rotating stirring shaft, which has several stirring blades. The rotating shaft is connected to the end of the stirring shaft via a belt.

4. The liquid fertilizer deep-hole application machine according to claim 1, characterized in that: A flow control valve is installed at the fertilizer inlet.

5. The liquid fertilizer deep-hole application machine according to claim 2, characterized in that: A mounting bracket is installed on the frame, and the horizontal reciprocating motion mechanism is set on the mounting bracket. The top of the mounting bracket has a first mounting plate, and the first mounting plate is provided with a mounting seat and two sets of sliding grooves. The plant spacing adjustment mechanism includes two sliding rods, two sets of transverse electric push rods, and two sliding plates. The two sliding rods are fixed to the lower part of the mounting frame. Two sliding sleeves are provided on the side sliding groove. The side sliding groove can slide left and right on the two sliding rods through the two sliding sleeves. The two sliding plates are slidably installed on the two sets of sliding grooves respectively. The seat of the two sets of transverse electric push rods is installed on the mounting base. The push rod ends of the two sets of transverse electric push rods are fixedly connected to the two sliding plates respectively. Under the push of the transverse electric push rods, the sliding plates can move left and right on the sliding groove. The rotating shaft and upper slide groove of the horizontal reciprocating motion mechanism are both set on the sliding plate; the outer wheel surface of the lower gear is wider than that of the upper gear.

6. The liquid fertilizer deep application device according to claim 5, characterized in that: The bottom of the mounting bracket has a second mounting plate, two sliding rods are fixed to the bottom surface of the second mounting plate, the upper drive shaft is mounted on the upper surface of the second mounting plate, four vertical fixed shafts are fixed at the four corners of the second mounting plate, and four mounting ears are fixed at the four corners of the top of the frame. The mounting ears have through holes, and the four vertical fixed shafts are respectively inserted into the through holes of the four mounting ears. The fertilization depth adjustment mechanism includes several sets of vertical electric push rods. The base of the vertical electric push rod is mounted on the frame, and the push rod end of the vertical electric push rod is mounted on the second mounting plate. Under the push of the vertical electric push rod, the mounting frame can move in the vertical direction through the cooperation of four vertical fixed shafts and four mounting ears. The transmission belt is an elastic transmission belt.

7. The liquid fertilizer deep-hole application machine according to any one of claims 1-6, characterized in that: The front side of the frame is equipped with a parallel four-bar contouring mechanism, which includes a three-point suspension plate, a connecting plate, a limiting and fixing shaft, and two sets of parallel four-bar structures. The connecting plate is fixed to the front side of the frame, and the three-point suspension plate is connected to the connecting plate through two sets of parallel four-bar structures. The two sets of parallel four-bar structures are symmetrically arranged on the left and right. Each set of parallel four-bar structure includes a limiting plate and two connecting rods. Both ends of each connecting rod are mounted on the three-point suspension plate and the connecting plate by means of hinges. The two connecting rods are arranged parallel to each other vertically. The lower connecting rod has an elongated hole. One end of the limiting plate is hinged to the three-point suspension plate, and the other end of the limiting plate is provided with a sliding column. The sliding column can slide in the elongated hole of the lower connecting rod. The limiting and fixing shaft is fixed between two limiting plates.

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