Corn tillage fertilization sprayer

Abstract

A tillage fertilization sprayer, the frame of the vehicle is in an M shape as a whole, and can straddle the path of corn seedlings to carry out fertilization or spraying operations. Two ends of the frame are respectively connected to a double-row fertilization assembly, and two disc-type hole-piercing fertilization mechanisms are installed side by side at the lower end of the rolling bracket of the double-row fertilization assembly. The fertilizer in the fertilizer box of the fertilization mechanism enters into a rotating disc from a feed pipe, and a plurality of hole-piercing duckbill assemblies are arranged on the side of the rotating disc. When the rotating disc rolls on the surface, a plurality of hole-piercing duckbill assemblies successively pierce fertilizer holes on the surface, and temporarily stored fertilizer enters into the fertilizer holes from the hole-piercing duckbill, and then the hole-piercing duckbill assembly is automatically closed to complete the hole-piercing fertilization operation; in addition, a foldable sprayer is installed at the rear of the sprayer to carry out spraying operations, and the folding frames at both ends can be unfolded to increase the spraying area and improve the spraying efficiency; the tillage fertilization sprayer integrates the fertilization function and the spraying function, which is conducive to reducing equipment costs and improving operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a corn tillage, fertilization and spraying vehicle. Background Art

[0002] Corn tillage is the topsoil cultivation in the middle growth period of corn seedlings. Hand hoes, tillage plows, toothed rakes and other tools can be used for tillage operations. Corn tillage can loosen the topsoil, increase soil aeration, increase ground temperature, promote aerobic microbial activity and nutrient effectiveness, remove weeds, promote root extension, regulate soil moisture conditions, and increase corn yields. After corn tillage, topdressing is usually required to supplement the lack of basal fertilizer and meet the nutritional needs of plants in the middle and late stages. The main method of topdressing is furrow fertilization. The utilization rate of furrow fertilization is high, but there is a problem of accelerated evaporation of water in the soil and damage to the root system of corn seedlings. In addition, the existing furrow fertilization equipment can usually only be used for single-row furrow fertilization, and the fertilization efficiency is not high. In addition, weed spraying and pest spraying are also required during the growth of corn, so spraying equipment is needed for spraying operations. The existing spraying equipment has the problem of a small spraying range, and it is necessary to spray back and forth more often, and the spraying efficiency is low. At the same time, due to the limitations of the operating procedures, only one type of equipment can be used for operation at a time, and the equipment cost is high and it is not conducive to improving the operating efficiency. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a corn tillage fertilization spraying vehicle.

[0004] The technical scheme of the present invention is: a corn intertillage fertilization sprayer, comprising a three-wheel fertilization vehicle, a fertilization device and a sprayer installed on the three-wheel fertilization vehicle, the frame of the three-wheel fertilization vehicle comprising a bottom plate bracket, a vertical bracket, a telescopic crossbeam assembly and two telescopic rear wheel brackets, the vertical bracket is fixedly connected to the rear end of the bottom plate bracket, the telescopic crossbeam assembly is transversely installed on the upper end of the vertical bracket, the two telescopic rear wheel brackets are symmetrically installed at both ends of the telescopic crossbeam assembly, and the two rear wheels are respectively installed on the two telescopic rear wheel brackets; the sprayer comprises a liquid medicine tank installed in the middle of the chassis bracket and a foldable sprayer mechanism, the foldable sprayer mechanism is connected to the rear end of the frame, and a conveying hose is provided between the liquid medicine tank and the foldable sprayer mechanism;

[0005] The fertilizing device comprises two double-row fertilizing groups located on both sides of the three-wheeled fertilizing vehicle.

[0006] The double-row fertilization assembly includes a rolling bracket and two disc-type piercing fertilization mechanisms. The rolling bracket includes a U-shaped main bracket and two U-shaped wheel axle brackets. A fertilizer box is installed on the U-shaped main bracket. The two U-shaped wheel axle brackets are symmetrically installed at the lower ends of two support rods on both sides of the U-shaped main bracket. A hinged rod is provided in the middle of the cross bar of the U-shaped main bracket. The upper end of the hinged rod is hinged to the upper part of the front end of the telescopic rear wheel bracket. An electric push rod A is hinged between the middle part of the hinged rod and the telescopic rear wheel bracket. The two disc-type piercing fertilization mechanisms are respectively installed in the two U-shaped wheel axle brackets.

[0007] The disc-type hole-piercing fertilization mechanism comprises a rotating disc with a accommodating cavity inside, a hole-piercing duckbill assembly, and an opening and closing mechanism; a first feed port is provided at the center of one end plate of the rotating disc, and a feed pipe is rotatably connected to the first feed port, and the feed pipe is connected to the bottom of the fertilizer box through a feeding hose, and a connecting rod is provided between the U-shaped wheel axle bracket and the feed pipe to connect them as a whole, and a wheel axle for supporting the rotation of the rotating disc is provided between the centers of the two end plates of the rotating disc, and the wheel axle is connected between the lower ends of the U-shaped wheel axle bracket, and a plurality of discharge ports are evenly distributed in the middle of the side plates of the rotating disc, and a hole-piercing duckbill assembly is provided on each discharge port, and the hole-piercing duckbill assembly comprises a fixed duckbill and a movable duckbill, the fixed duckbill is radially fixed at the discharge port, the upper end of the movable duckbill is fixedly connected to a hinge shaft and is hinged to the fixed duckbill through the hinge shaft, and the duckbill cavity formed by the fixed duckbill and the movable duckbill covers the discharge port;

[0008] The opening and closing mechanism includes a Z-shaped bracket fixed at the lower end of the feed pipe, a stop wheel assembly, and a stop rod. The support plate at the lower end of the Z-shaped bracket is parallel to the end plate of the rotating disc, and an arc groove is provided at the inner end of the support plate. The lower edge of the outer end of the support plate is provided with a limit folding edge. The stop wheel assembly includes a swing plate and a plurality of stop wheels. A circular convex block is provided at the lower corner of the inner end of the support plate. The upper end of the swing plate is hinged on the circular convex block. The plurality of stop wheels are connected to the middle of the inner side surface of the swing plate by rotating along the length direction. The blocking wheel on the upper end of the swing plate can correspond to the arc groove, the blocking wheel at the lower end of the swing plate can correspond to the limiting folded edge, the blocking rod is radially arranged on the outer side of the end surface of the rotating disc, the lower end of the blocking rod is vertically fixedly connected to the hinge shaft of the movable duckbill, the upper end of the blocking rod can correspond to the blocking wheel at the lower end of the swing plate, and a torsion spring for driving the movable duckbill to close counterclockwise is provided between the blocking rod and the hinge shaft; a protective baffle is provided on the inner side edge of the swing plate, which blocks the blocking wheel and the limiting folded edge.

[0009] Preferably, a rectangular cache box is provided at the discharge port in the rotating disc, the discharge port is located at one end of the cache box, a second feed port is provided in the middle of one side panel of the cache box, an inclined baffle is provided on the outer side of the second feed port, and a top plate is provided between the upper end of the inclined baffle and the side panel of the cache box, and a trumpet-shaped feed channel connected to the second feed port is formed between the top plate, the inclined baffle and the side panel of the cache box; the size of one end of the cache box is smaller than that of the other end, and the small-sized end of the cache box corresponds to the discharge port, and an inclined side panel is provided between the two ends of the cache box.

[0010] Preferably, an adjusting mechanism for controlling the opening size of the trumpet-shaped feed channel is provided on the end plate of the rotating disc, the adjusting mechanism includes an adjusting plate and a driving motor, a horizontal axis is provided on the upper end surface of the adjusting plate along the length square, the size of the adjusting plate matches the cross-sectional size of the trumpet-shaped feed channel, the adjusting plate is rotatably connected to the entrance of the trumpet-shaped feed channel via the horizontal axis, the driving motor is installed on the side plate of the rotating disc via a U-shaped bracket, and the driving shaft of the driving motor is coaxially fixedly connected to one end of the horizontal axis.

[0011] Preferably, a circular gear scale line is provided on the end plate of the rotating disc, an indicating disc is coaxially fixedly connected to the driving shaft of the driving motor, and the indicating tip on the indicating disc corresponds to the gear scale line.

[0012] Preferably, the support rod of the U-shaped main bracket is configured as a telescopic support rod, the telescopic support rod includes a square tube rod, a square telescopic rod, and a spring. The upper side of the square tube rod is provided with a plurality of sockets, and a baffle rod is inserted into the sockets. The square telescopic rod is slidably connected in the square tube rod, and the spring is installed in the square tube rod. The lower end of the spring is pressed on the upper end surface of the square telescopic rod, and the upper end of the spring is pressed on the baffle rod. A sleeve is provided at the lower end of the square telescopic rod, and the cross bar at the upper end of the U-shaped axle bracket is sleeved in the sleeve. A threaded hole is provided on the side of the sleeve, and a set screw is inserted into the threaded hole.

[0013] Preferably, a limiting mechanism for controlling the sliding stroke of the square telescopic rod is provided between the square tube rod and the square telescopic rod; the limiting mechanism includes a first oblong hole arranged along the length direction of the lower side wall of the square tube rod, an oblong pin hole arranged on the middle side wall of the square support rod, and a limiting pin, and the limiting pin is inserted between the first oblong hole and the oblong pin hole.

[0014] Preferably, the telescopic rear wheel support includes a vertically arranged fixed frame, a lifting frame, an electric push rod B, and a rear wheel, a sliding cavity is provided in the fixed frame, and the lifting frame is slidably connected in the sliding cavity, a plurality of positioning holes are provided on the fixed frame and the lifting frame along the length direction, and positioning bolts are inserted between the positioning holes of the fixed frame and the lifting frame, the base of the electric push rod B is hinged to the middle part of the inner side surface of the fixed frame, the outer end of the telescopic rod of the electric push rod B is hinged to the lower part of the inner side surface of the lifting frame, the rear wheel is connected to the lower end of the lifting frame, and a driving device for driving the rear wheel to rotate is provided on the inner side of the lifting frame.

[0015] Preferably, the foldable spraying mechanism includes a folding bracket assembly, two lifting mechanisms, and a spraying pipe assembly; the folding bracket assembly includes an intermediate frame and two folding frames, the two lifting mechanisms are connected between two telescopic rear wheel brackets and two ends of the intermediate frame, the two folding frames are fixedly connected to the two ends of the intermediate frame by hinges, a through hole A is provided at each end of the vertical rod A at the end of the intermediate frame, a through hole B is provided at each end of the vertical rod B at the end of the folding frame, and a positioning pin is inserted between the through hole A and the through hole B; the spraying pipe assembly is installed at the lower part of the intermediate frame and the folding frame; the upper end of the hinge shaft between the two leaves of the hinge protrudes from the upper surface of the hinge, and a handle is provided at the upper end of the hinge shaft.

[0016] Preferably, the lifting mechanism includes an upper connecting rod, a lower connecting rod, and an electric push rod C, the upper connecting rod is hinged between the upper end of the fixed frame and the upper end of the intermediate frame, the lower connecting rod is hinged between the lower end of the fixed frame and the lower end of the intermediate frame, the upper connecting rod and the lower connecting rod are parallel to each other to form a parallel four-link, the fixed support of the electric push rod C is hinged to the inner end of the lower connecting rod, and the telescopic rod of the electric push rod C is hinged to the outer end of the upper connecting rod.

[0017] Preferably, the drug spray tube assembly includes a drug delivery tube A and two drug delivery tubes B, the drug delivery tube A is fixed at the lower end of the middle frame along the length direction, the delivery hose is connected in the middle of the drug delivery tube A, the two drug delivery tubes B are respectively fixedly connected to the lower ends of the two folding frames along the length direction, the drug delivery tube A and the drug delivery tubes B on both sides are connected to each other through soft connecting tubes, and multiple drug spray nozzles are connected to the drug delivery tube A and the drug delivery tube B.

[0018] The beneficial technical effects of the present invention are:

[0019] First, the present invention designs a tillage fertilization spraying vehicle, the frame of which is in an M shape as a whole, and can straddle the row of corn seedlings for fertilization, and a double-row fertilization assembly is connected to each of the two ends of the frame, and two disc-type hole-piercing fertilization mechanisms are installed side by side at the lower end of the rolling bracket of the double-row fertilization assembly, and the two disc-type hole-piercing fertilization mechanisms correspond to the two rows of corn seedlings respectively, and the fertilizer in the fertilizer box of the fertilization mechanism enters into the accommodating cavity of the rotating disc from the feeding pipe, and the side surface (rolling surface) of the rotating disc is provided with a plurality of hole-piercing duckbill assemblies connected with the accommodating cavity, and when the rotating disc rolls on the surface, a plurality of hole-piercing duckbill assemblies successively poke fertilizer holes corresponding to the corn seedlings on the surface, and at the same time, the hole-piercing duckbill assembly is opened by the opening and closing mechanism, and the fertilizer temporarily stored in the accommodating cavity enters into the fertilizer hole from the hole-piercing duckbill, and then the hole-piercing duckbill assembly is automatically closed. The hole-piercing fertilization operation is completed; the inter-row fertilization sprayer can fertilize four rows of corn at the same time, with high fertilization efficiency. The method of fixed-plant hole-piercing fertilization is conducive to reducing the loss of water in the soil and improving the fertilizer utilization rate. In addition, a foldable spraying mechanism is installed at the rear of the sprayer, and the liquid medicine tank arranged on the frame is used to transport the liquid medicine to the spray pipe assembly of the mechanism, and a parallel four-link lifting mechanism is installed on the frame and the folding spraying mechanism. The parallel four-link mechanism can drive the folding bracket assembly to rise or fall vertically, and the spray bracket will not tilt after lifting, which can ensure the spraying effect after lifting, and the spraying frame is set to a three-section structure. The folding frames at both ends can be unfolded to increase the spraying area and improve the spraying efficiency. The inter-row fertilization sprayer integrates the fertilization function and the spraying function, which is conducive to reducing equipment costs and improving work efficiency.

[0020] Secondly, the blocking wheel assembly of the opening and closing mechanism of the disc-type hole-piercing fertilization mechanism of the present invention is rotatably connected to the lower end of the support plate, so that the blocking wheel assembly can swing in both clockwise and counterclockwise directions. When the rotating disc moves forward clockwise to fertilize, the upper end of the blocking rod blocks the lower end of one side of the blocking wheel assembly and pushes the blocking wheel assembly to rotate clockwise. When the blocking wheel contacts the limiting folded edge, resistance is generated on the blocking rod, and the blocking rod swings accordingly to open the hole-piercing duckbill assembly for fertilization. After fertilization is completed, the upper end of the blocking rod slides over the lower end of the blocking wheel assembly, and the torsion spring causes the hole-piercing duckbill assembly to close again. The automatic opening and closing of the hole-piercing duckbill assembly is realized; at the same time, the mechanism can also cope with the counterclockwise rotation of the rotating disc when reversing. When the rotating disc rotates counterclockwise, the upper end of the blocking rod blocks the lower end of the other side of the blocking wheel assembly and pushes the blocking wheel assembly to rotate counterclockwise. The hole-piercing duckbill assembly is in a closed state under the action of the torsion spring. When the upper end of the blocking wheel assembly rotates into the arc groove, the blocking rod and the lower end of the blocking wheel assembly are separated. During this process, no conflict will occur between the blocking wheel assembly and the blocking rod, thereby ensuring that the disc-type hole-piercing fertilization mechanism rotates and operates normally when the fertilizer sprayer is reversing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention after the spraying equipment is removed;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the double-row fertilization assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the main structure of the double-row fertilization assembly of the present invention;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the disc-type hole-piercing fertilization mechanism of the present invention;

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the blocking wheel assembly of the present invention;

[0027] Figure 7 It is one of the main structural schematic diagrams of the disc-type hole-piercing fertilization mechanism (the figure shows a schematic diagram of the blocking wheel assembly rotating in the clockwise direction and contacting with the limit folding edge);

[0028] Figure 8 This is the second schematic diagram of the main structure of the disc-type hole-piercing fertilization mechanism (the diagram shows the schematic diagram of the blocking wheel assembly rotating counterclockwise into the arc groove);

[0029] Fig. 9 It is a rear view structural schematic diagram of a disc-type hole-piercing fertilization mechanism;

[0030] Fig.10 yes Fig. 9 A partial enlarged view of

[0031] Fig.11 yes Fig. 9 AA section view;

[0032] Fig.12 yes Fig.11 A partial enlarged view of

[0033] Fig.13 yes Fig.11 BB section view;

[0034] Fig.14 yes Fig.13 A partial enlarged view of

[0035] Fig.15 yes Fig.13 CC section view;

[0036] Fig.16 yes Fig.13 DD section view;

[0037] Fig.17 It is a schematic diagram of the three-dimensional structure of the rolling bracket of the present invention;

[0038] Fig.18 It is a schematic diagram of the main structure of the support rod of the U-shaped main bracket;

[0039] Fig.19 yes Fig.18 EE section view;

[0040] Fig. 20 yes Fig.19 FF section view;

[0041] Fig.21 yes Fig. 20 A partial enlarged view of

[0042] Fig. 22 It is a schematic diagram of the three-dimensional structure of the telescopic rear wheel support of the present invention;

[0043] Fig.23 It is a schematic diagram of the main structure of the telescopic rear wheel support of the present invention;

[0044] Fig.24 It is a side view structural schematic diagram of the foldable spraying mechanism of the present invention;

[0045] Fig.25 It is a schematic diagram of the main structure of the foldable spraying mechanism of the present invention;

[0046] Fig.26 yes Fig.25 A partial enlarged view of

[0047] Fig. 27 yes Fig.26 GG section view.

[0048] In the figure, 001. double-row fertilization assembly, 101. rolling bracket, 102. U-shaped main bracket, 1021. square tube rod, 1022. square telescopic rod, 1023. spring, 1024. sleeve, 1025. stop rod, 1026. jack, 1027. first oblong hole, 1028. oblong pin hole, 1029. limit pin, 1030. hinge rod, 103. U-shaped wheel axle bracket, 1031. micro switch, 1032. signal contact rod, 104. fertilizer box, 105. feeding hose, 106. connecting rod, 107. disc-type piercing fertilization mechanism, 01. rotating disc, 11. first inlet Feeding port, 12. Feeding pipe, 13. Feeding port, 14. Axle, 15. Accommodating chamber, 02. Duckbill assembly, 21. Fixed duckbill, 22. Movable duckbill, 03. Opening and closing mechanism, 301. Z-shaped bracket, 31. Support plate, 311. Arc groove, 312. Limiting folding edge, 313. Circular convex block, 32. Wheel block assembly, 321. Swinging plate, 322. Wheel block, 323. Protective baffle, 331. Articulated shaft, 332. Baffle rod, 34. Torsion spring, 41. Cache box, 411. Oblique baffle, 412. Top plate, 413 Second feeding port, 414. Trumpet-shaped feeding channel, 415. Oblique side plate , 42. Adjustment mechanism, 421. U-shaped bracket, 422. Gear scale line, 423. Indicator disc, 424. Adjustment plate, 4241. Bevel edge, 425. Horizontal axis, 426. Drive motor, 427. Drive shaft, 51. Set screw, 61. Liquid tank, 62. Delivery hose, 63. Folding spray mechanism, 64. Folding bracket assembly, 641. Intermediate frame, 642. Vertical rod A, 643. Through hole A, 644. Folding frame, 645. Vertical rod B, 646. Through hole B, 647. Hinge, 648. Hinge axis, 649. Handle, 650. Positioning pin, 651. Stop pin, 6 5. Lifting mechanism, 651. Upper connecting rod, 652. Lower connecting rod, 653. Electric push rod C, 66. Spraying pipe assembly, 661. Drug delivery pipe A, 662. Drug delivery pipe B, 663. Spraying nozzle, 664. Flexible connecting pipe, 665. Lighting lamp, 07. Three-wheel fertilizer spreader, 71. Bottom plate bracket, 72. Vertical bracket, 73. Telescopic crossbeam assembly, 74. Telescopic rear wheel bracket, 741. Fixed frame, 742. Lifting frame, 743. Electric push rod B, 744. Rear wheel, 746. Driving device, 747. Positioning hole, 748. Positioning bolt, 75. Electric push rod A, 76. Distribution box and inverter. DETAILED DESCRIPTION

[0049] Example 1, see the attached specification Figure 1- 27, comprising a three-wheeled fertilizer spreading vehicle, a fertilizer spreading device and a spraying device installed on the three-wheeled fertilizer spreading vehicle, the frame of the three-wheeled fertilizer spreading vehicle comprising a bottom plate bracket, a vertical bracket, a telescopic crossbeam assembly and two telescopic rear wheel brackets, a distribution box and an inverter are arranged on the chassis bracket, the vertical bracket is fixedly connected to the rear end of the bottom plate bracket, the telescopic crossbeam assembly is transversely mounted on the upper end of the vertical bracket, two telescopic rear wheel brackets are symmetrically mounted at both ends of the telescopic crossbeam assembly, and two rear wheels are respectively mounted on the two telescopic rear wheel brackets; the telescopic crossbeam assembly can adjust the overall width of the frame according to the row spacing of corn seedlings, and the telescopic rear wheel bracket can adjust the overall height of the frame according to the height of the corn seedlings, thereby improving the flexibility and adaptability of the fertilizer spreading vehicle.

[0050] The spraying device comprises a liquid medicine tank installed in the middle of the chassis bracket and a foldable spraying mechanism, the foldable spraying mechanism is connected to the rear end of the frame, a liquid medicine pump is arranged in the liquid medicine tank and a conveying hose is arranged between the liquid medicine pump and the foldable spraying mechanism; the foldable spraying mechanism comprises a folding bracket assembly, two lifting mechanisms, and a spraying pipe assembly; the folding bracket assembly comprises an intermediate frame and two folding frames, the two lifting mechanisms are connected between two telescopic rear wheel brackets and two ends of the intermediate frame, the two folding frames are fixedly connected to the two ends of the intermediate frame by hinges, a through hole A is respectively arranged at both ends of the vertical rod A at the end of the intermediate frame, and a through hole A is arranged at each end of the vertical rod A at the end of the folding frame. A through hole B is provided at each end of the vertical rod B at the end of the stacking frame, and a positioning pin is inserted between through hole A and through hole B. After the two folding frames are unfolded at both ends of the middle frame, the positioning pins are respectively inserted into through hole A and through hole B at both ends, and the unfolded folding frames are fixed by the positioning pins, and a limiting hole is radially provided at the outer end of the positioning pin, and a stop pin is inserted into the positioning hole to prevent the positioning pin from loosening; the spray pipe assembly is installed at the lower part of the middle frame and the folding frame; the upper end of the hinge shaft between the two leaves of the hinge protrudes from the upper surface of the hinge, and a handle is provided at the upper end of the hinge shaft, and the handle is used to pull out the hinge shaft to facilitate the disassembly or installation of the folding frame.

[0051] The lifting mechanism includes an upper connecting rod, a lower connecting rod, and an electric push rod C. The upper connecting rod is hinged between the upper end of the fixed frame and the upper end of the intermediate frame, the lower connecting rod is hinged between the lower end of the fixed frame and the lower end of the intermediate frame, the upper connecting rod and the lower connecting rod are parallel to each other to form a parallel four-link, the fixed support of the electric push rod C is hinged to the inner end of the lower connecting rod, and the telescopic rod of the electric push rod C is hinged to the outer end of the upper connecting rod. When the electric push rod is extended outward, the outer end of the parallel four-link mechanism can be driven to move upward, thereby driving the folding bracket assembly to rise, and when the electric push rod is retracted inward, the outer end of the parallel four-link mechanism can be driven to move downward, thereby driving the folding bracket assembly to descend.

[0052] The spray tube assembly comprises a drug delivery tube A and two drug delivery tubes B.

[0053] The length direction is fixed at the lower end of the middle frame, the delivery hose is connected to the middle of the drug delivery tube A, and the two drug delivery tubes B are respectively fixedly connected to the lower ends of the two folding frames along the length direction. The drug delivery tube A and the drug delivery tubes B on both sides are connected to each other through soft connecting pipes. During the folding process of the folding frame, the connection between the drug delivery tube A and the drug delivery tube B will be bent. The soft connecting pipe is provided to maintain the connection between the drug delivery tube A and the drug delivery tube B during the bending process. Multiple drug spray nozzles are connected to the drug delivery tube A and the drug delivery tube B, and the drug liquid in the drug liquid tank is transported to the drug spray nozzle for spraying through the drug delivery tube A and the two drug delivery tubes B.

[0054] The fertilizing device comprises two double-row fertilizing groups located on both sides of the three-wheeled fertilizing vehicle.

[0055] The double-row fertilization assembly includes a rolling bracket and two disc-type piercing fertilization mechanisms. The rolling bracket includes a U-shaped main bracket and two U-shaped wheel axle brackets. A fertilizer box is installed on the U-shaped main bracket. The two U-shaped wheel axle brackets are symmetrically installed at the lower ends of two support rods on both sides of the U-shaped main bracket. A hinged rod is provided in the middle of the cross bar of the U-shaped main bracket. The upper end of the hinged rod is hinged to the upper part of the front end of the telescopic rear wheel bracket. An electric push rod A is hinged between the middle part of the hinged rod and the telescopic rear wheel bracket. The two disc-type piercing fertilization mechanisms are respectively installed in the two U-shaped wheel axle brackets.

[0056] The disc-type hole-piercing fertilization mechanism comprises a rotating disc with a accommodating cavity inside, a hole-piercing duckbill assembly, and an opening and closing mechanism; a first feed port is provided at the center of one end plate of the rotating disc, a feed pipe is rotatably connected to the first feed port, and a sealing ring is provided at the rotating connection, the feed pipe is connected to the bottom of the fertilizer box through a feeding hose, the fertilizer in the fertilizer box enters the accommodating cavity of the rotating disc from the feeding hose and the feed pipe, and a connecting rod is provided between the U-shaped wheel axle bracket and the feed pipe to connect them as a whole, a wheel axle for supporting the rotation of the rotating disc is provided between the centers of the two end plates of the rotating disc, one end of the wheel axle extends from the first feed port into the feed pipe, and extends from the lower part of the feed pipe, and the lower part of the feed pipe and the wheel axle are connected to each other. A bearing is arranged between the shafts, and a bearing is arranged between the wheel shaft and the end plate of the rotating disc. The wheel shaft is connected between the lower ends of the U-shaped wheel shaft bracket, so that the disc-type hole-piercing fertilization mechanism can rotate inside. Several discharge ports are evenly distributed in the middle of the side plate of the rotating disc, and each discharge port is provided with a hole-piercing duckbill assembly, which includes a fixed duckbill and a movable duckbill. The fixed duckbill is radially fixed at the discharge port, and the upper end of the movable duckbill is fixedly connected to a hinge shaft and is hinged to the fixed duckbill through the hinge shaft. The duckbill cavity formed by the fixed duckbill and the movable duckbill covers the discharge port, and the fertilizer in the accommodating cavity enters the duckbill cavity from the discharge port. After piercing the hole, the soil of this hole-piercing duckbill can be automatically backfilled into the fertilization hole;

[0057] The opening and closing mechanism includes a Z-shaped bracket fixed at the lower end of the feed pipe, a blocking wheel assembly, and a blocking rod. The support plate at the lower end of the Z-shaped bracket is parallel to the end plate of the rotating disc, and an arc groove is provided at the inner end of the support plate. The lower edge of the outer end of the support plate is provided with a limiting folded edge. The blocking wheel assembly includes a swing plate and a plurality of blocking wheels. A circular convex block is provided at the lower corner of the inner end of the support plate. The upper end of the swing plate is hinged on the circular convex block. The plurality of blocking wheels are rotatably connected to the middle of the inner side surface of the swing plate along the length direction. The blocking wheel on the upper end of the swing plate can correspond to the arc groove. The arc groove Used to increase the swing space of the stop wheel assembly, the stop wheel at the lower end of the swing plate can correspond to the limit folded edge, and the limit folded edge is used to limit the swing range of the stop wheel assembly. The stop rod is radially arranged on the outer side of the end face of the rotating disk, and the lower end of the stop rod is vertically fixedly connected to the hinge shaft of the movable duckbill. The swing of the stop rod can drive the movable duckbill to rotate in the fixed duckbill through the hinge shaft to realize the opening or closing of the piercing duckbill assembly. The upper end of the stop rod can correspond to the stop wheel at the lower end of the swing plate, and a torsion spring for driving the movable duckbill to close counterclockwise is provided between the stop rod and the hinge shaft.

[0058] A protective baffle is provided on the inner side of the swing plate, which is blocked between the blocking wheel and the limiting folding edge. The protective baffle is blocked between the blocking wheel and the limiting folding edge to protect the blocking wheel, avoid damage caused by frequent collisions between the blocking wheel and the limiting folding edge, and help to extend the service life of the blocking wheel.

[0059] A cache box is provided at the discharge port in the rotating disc, and the discharge port is located at one end of the cache box. A second feed port is provided in the middle of a side plate of the cache box. An inclined baffle is provided on the outer side of the second feed port, and a top plate is provided between the upper end of the inclined baffle and the side plate of the cache box. A trumpet-shaped feed channel connected to the second feed port is formed between the top plate, the inclined baffle and the side plate of the cache box. When the rotating disc rotates, the fertilizer in the accommodating cavity flows into the trumpet-shaped feed channel along the inner side wall of the rotating disc. The trumpet-shaped feed channel is used to guide the fertilizer to the second feed port and enter the cache box from the second feed port, which can increase the feeding speed of the cache box and ensure the feeding amount of the cache box.

[0060] The end plate of the rotating disc is provided with an adjusting mechanism for controlling the opening size of the trumpet-shaped feeding channel, the adjusting mechanism comprises an adjusting plate and a driving motor, the upper end surface of the adjusting plate is provided with a transverse axis along the length square, the size of the adjusting plate matches the cross-sectional size of the trumpet-shaped feeding channel, the adjusting plate is rotatably connected to the entrance of the trumpet-shaped feeding channel through the transverse axis, the driving motor is mounted on the side plate of the rotating disc through a U-shaped bracket, and the driving shaft of the driving motor is coaxially fixedly connected with one end of the transverse axis; a circular gear scale line is provided on the end plate of the rotating disc, and an indicating disc is coaxially fixedly connected to the driving shaft of the driving motor, and the indicating tip on the indicating disc corresponds to the gear scale line; the transverse axis at the upper end of the adjusting plate is driven to rotate by the driving motor, and the adjusting plate swings accordingly to adjust the opening size of the trumpet-shaped feeding channel, and at the same time, the indicating disc rotates synchronously with the transverse axis, and the indicating arrows on the indicating disc point to different gear scale lines, and the size of the opening adjusted by the adjusting plate is determined according to the gear scale line, so as to accurately control the amount of fertilizer applied.

[0061] The outer corners of the lower end of the adjusting plate are provided with beveled edges, which can change the flow direction of the fertilizer and play a turbulent role. It can not only break up the lumped fertilizer, but also avoid clogging at the entrance of the trumpet-shaped feeding channel of the fertilizer; and a transparent plate is provided in the middle of one end plate of the rotating disc, through which the internal situation of the rotating disc can be observed.

[0062] The cache box is in the shape of a rectangular parallelepiped, with one end of the cache box being smaller than the other end, and the small-sized end of the cache box corresponding to the discharge port, and an inclined side plate connecting the two ends of the cache box; this arrangement is used to increase the storage space of the cache box as much as possible and ensure that the stored fertilizer is completely discharged from the discharge port, and the inclined side plate plays a diversion role, which is beneficial for the fertilizer in the cache box to quickly flow into the discharge port.

[0063] The support rod of the U-shaped main bracket is set as a retractable support rod, and the retractable support rod includes a square tube rod, a square telescopic rod, and a spring. A plurality of sockets are provided on the upper side of the square tube rod, and a stop rod is inserted into the socket. The square telescopic rod is slidably connected in the square tube rod. The square tube rod and the square telescopic rod are provided for limiting in the circumferential direction to prevent the square telescopic rod from rotating. The spring is installed in the square tube rod, and the lower end of the spring is pressed on the upper end surface of the square telescopic rod, and the upper end of the spring is pressed on the stop rod. When the square telescopic rod slides in the square tube rod, the spring can increase the elastic support for the square telescopic rod, thereby playing a shock-absorbing effect on the disc-type piercing fertilization mechanism. A sleeve is provided at the lower end of the square telescopic rod, and the cross bar at the upper end of the U-shaped wheel axle bracket is sleeved in the sleeve. A threaded hole is provided on the side of the sleeve, and a set screw is inserted into the threaded hole.

[0064] A limiting mechanism for controlling the sliding stroke of the square telescopic rod is provided between the square tube rod and the square telescopic rod; the limiting mechanism comprises a first oblong hole arranged along the length direction of the lower side wall of the square tube rod, an oblong pin hole arranged on the middle side wall of the square support rod, and a limiting pin, the limiting pin being inserted between the first oblong hole and the oblong pin hole, and when the square telescopic rod slides up and down, the limiting pin slides up and down in the oblong hole accordingly, and the sliding stroke of the limiting pin and the square telescopic rod is controlled within the length range of the oblong hole; the limiting pin can also slide in the oblong pin hole, and thus the sliding stroke of the square telescopic rod is increased without increasing the length of the first oblong hole, which is beneficial to controlling the opening length of the oblong hole and ensuring the structural strength of the U-shaped main bracket.

[0065] The telescopic rear wheel bracket comprises a vertically arranged fixed frame, a lifting frame, an electric push rod B, and a rear wheel. A sliding cavity is provided in the fixed frame, and the lifting frame is slidably connected in the sliding cavity. A plurality of positioning holes are provided on the fixed frame and the lifting frame along the length direction, and positioning bolts are inserted between the positioning holes of the fixed frame and the lifting frame. The base of the electric push rod B is hinged to the middle part of the inner side surface of the fixed frame, and the outer end of the telescopic rod of the electric push rod B is hinged to the lower part of the inner side surface of the lifting frame. The rear wheel is connected to the lower end of the lifting frame, and a driving device for driving the rear wheel to rotate is provided on the inner side of the lifting frame; the electric push rod B drives the lifting frame to slide on the fixed frame to adjust the overall height of the frame, and the positioning bolts are inserted between the positioning holes to fix the fixed frame and the lifting frame, thereby reducing the pressure on the electric push rod B.

[0066] A micro switch is provided on the outer side of the cross bar at the upper end of the U-shaped axle bracket, and the signal contact rod on the micro switch extends laterally out of the U-shaped axle bracket. The signal contact rod on the micro switch is used to give a signal of whether it touches the corn plant to determine whether the fertilization device has reached the fertilization position.

[0067] The working process and principle of the present invention are:

[0068] When the intertillage fertilizer spreading vehicle moves forward to carry out hole-piercing fertilizer spreading operation

[0069] The intertillage fertilization sprayer straddles the rows of corn and moves forward to fertilize. The two double-row fertilization assemblies on both sides are respectively located in the aisles between the two rows of corn seedlings. The two disc-type hole-piercing fertilization mechanisms on the double-row fertilization assemblies are respectively close to the roots of the two rows of corn. As the fertilization vehicle moves forward, the rotating discs of the two hole-piercing fertilization mechanisms begin to rotate. At the same time, the fertilizer in the fertilizer box enters the accommodating cavity of the rotating disc through the feed pipe. The fertilizer in the accommodating cavity enters the buffer box from the trumpet-shaped feed channel, and enters the hole-piercing duckbill assembly from the discharge port in the buffer box. At the same time, the hole-piercing duckbill assembly at the lower end of the side (rolling surface) of the rotating disc is on the surface. Dig a deep hole; while digging the hole, the baffle rod connected to the movable duckbill rotates clockwise with the rotating disc, and when the upper end of the baffle rod contacts the baffle wheel at the lower end of the baffle wheel assembly, it pushes the baffle wheel assembly to rotate clockwise, and when the baffle wheel assembly contacts the limiting folded edge on the support plate, it stops swinging, at this time the baffle rod is blocked and starts to swing and drives the hinge shaft to rotate to open the movable duckbill, and the fertilizer inside is applied into the deep hole. During the fertilization process, the baffle rod continues to swing and slide over the lower end of the baffle wheel assembly, and the torsion of the torsion spring causes the hole-piercing duckbill assembly to close again. After the hole-piercing duckbill assembly leaves the fertilization hole, the soil is automatically backfilled to cover the internal fertilizer; the four-row synchronous hole-piercing and fertilization of the crop-cultivating vehicle is realized.

[0070] When the tillage fertilization vehicle moves forward to perform spraying operation or spraying and fertilizing operation simultaneously

[0071] First, unfold the folding frames at both ends of the folding bracket assembly of the row-cultivation fertilization sprayer, adjust the folding frames to be in the same plane with the middle frame, and unfold the folding frames at both ends to increase the spraying area, and then insert positioning pins into the corresponding through holes A and B respectively, fix the unfolded folding frames through the positioning pins, put nuts on the threaded sections at both ends of the positioning pins and tighten them, fix the positioning pins in the through holes to prevent the positioning pins from loosening; then the sprayer bracket drives the folding bracket assembly to rise and fall through its own lifting mechanism, adjusts the folding bracket assembly to a suitable height from the ground, starts the liquid medicine pump in the liquid medicine tank, and the liquid medicine enters each spray nozzle assembly from the delivery hose to start spraying, and the row-cultivation fertilization sprayer straddles the rows of corn and moves forward to spray.

[0072] When the fertilization vehicle is reversing

[0073] The rotating discs of the two disc-type hole-piercing fertilization mechanisms rotate counterclockwise synchronously, and the blocking rod rotates counterclockwise accordingly. At this time, the torsion spring causes the hole-piercing duckbill assembly to be in a closed state. When the upper end of the blocking rod contacts the blocking wheel at the lower end of the blocking wheel assembly, it can push the blocking wheel assembly to rotate counterclockwise. When the upper end of the blocking wheel assembly rotates into the arc groove, the upper end of the blocking rod disengages from the lower end of the blocking wheel assembly. In this process, the blocking wheel assembly interferes with the blocking rod, thereby realizing the counterclockwise rotation of the disc-type hole-piercing fertilization mechanism when the fertilizer vehicle reverses.

Claims

1. A corn tillage fertilization sprayer, comprising a three-wheel fertilization vehicle, a fertilization device and a sprayer installed on the three-wheel fertilization vehicle, characterized in that: The frame of the three-wheel fertilizer spreading vehicle comprises a bottom plate support, a vertical support, a telescopic cross beam assembly and two telescopic rear wheel supports, the vertical support is fixedly connected to the rear end of the bottom plate support, the telescopic cross beam assembly is transversely installed at the upper end of the vertical support, the two telescopic rear wheel supports are symmetrically installed at both ends of the telescopic cross beam assembly, and the two rear wheels are respectively installed on the two telescopic rear wheel supports; the spraying device comprises a liquid medicine tank installed in the middle of the chassis support and a foldable spraying mechanism, the foldable spraying mechanism is connected to the rear end of the frame, and a conveying hose is provided between the liquid medicine tank and the foldable spraying mechanism; The fertilizing device comprises two double-row fertilizing assemblies located on both sides of the three-wheel fertilizing vehicle, the double-row fertilizing assemblies comprise a rolling bracket and two disc-type piercing and fertilizing mechanisms, the rolling bracket comprises a U-shaped main bracket and two U-shaped wheel axle brackets, a fertilizer box is mounted on the U-shaped main bracket, the two U-shaped wheel axle brackets are symmetrically mounted on the lower ends of two support rods on both sides of the U-shaped main bracket, a hinged rod is arranged in the middle of the cross bar of the U-shaped main bracket, the upper end of the hinged rod is hinged to the upper part of the front end of the telescopic rear wheel bracket, an electric push rod A is hinged between the middle part of the hinged rod and the telescopic rear wheel bracket, and the two disc-type piercing and fertilizing mechanisms are respectively mounted in the two U-shaped wheel axle brackets; The disc-type hole-piercing fertilization mechanism comprises a rotating disc with a accommodating cavity inside, a hole-piercing duckbill assembly, and an opening and closing mechanism; a first feed port is provided at the center of one end plate of the rotating disc, and a feed pipe is rotatably connected to the first feed port, and the feed pipe is connected to the bottom of the fertilizer box through a feeding hose, and a connecting rod is provided between the U-shaped wheel axle bracket and the feed pipe to connect them as a whole, and a wheel axle for supporting the rotation of the rotating disc is provided between the centers of the two end plates of the rotating disc, and the wheel axle is connected between the lower ends of the U-shaped wheel axle bracket, and a plurality of discharge ports are evenly distributed in the middle of the side plates of the rotating disc, and a hole-piercing duckbill assembly is provided on each discharge port, and the hole-piercing duckbill assembly comprises a fixed duckbill and a movable duckbill, the fixed duckbill is radially fixed at the discharge port, the upper end of the movable duckbill is fixedly connected to a hinge shaft and is hinged to the fixed duckbill through the hinge shaft, and the duckbill cavity formed by the fixed duckbill and the movable duckbill covers the discharge port; The opening and closing mechanism includes a Z-shaped bracket fixed at the lower end of the feed pipe, a stop wheel assembly, and a stop rod. The support plate at the lower end of the Z-shaped bracket is parallel to the end plate of the rotating disc, and an arc groove is provided at the inner end of the support plate. The lower edge of the outer end of the support plate is provided with a limit folding edge. The stop wheel assembly includes a swing plate and a plurality of stop wheels. A circular convex block is provided at the lower corner of the inner end of the support plate. The upper end of the swing plate is hinged on the circular convex block. The plurality of stop wheels are connected to the middle of the inner side surface of the swing plate by rotating along the length direction. The blocking wheel on the upper end of the swing plate can correspond to the arc groove, the blocking wheel at the lower end of the swing plate can correspond to the limit folding edge, the blocking rod is radially arranged on the outer side of the end surface of the rotating disc, the lower end of the blocking rod is vertically fixedly connected to the hinge shaft of the movable duckbill, the upper end of the blocking rod can correspond to the blocking wheel at the lower end of the swing plate, and a torsion spring for driving the movable duckbill to close counterclockwise is provided between the blocking rod and the hinge shaft; the inner side edge of the swing plate is provided with a protective baffle, which blocks between the blocking wheel and the limit folding edge; A rectangular cache box is provided at the discharge port in the rotating disc, the discharge port is located at one end of the cache box, a second feed port is provided in the middle of one side plate of the cache box, an inclined baffle is provided on the outer side of the second feed port, and a top plate is provided between the upper end of the inclined baffle and the side plate of the cache box, and a trumpet-shaped feed channel connected to the second feed port is formed between the top plate, the inclined baffle and the side plate of the cache box; the size of one end of the cache box is smaller than that of the other end, and the small-sized end of the cache box corresponds to the discharge port, and an inclined side plate is provided between the two ends of the cache box for connection; An adjusting mechanism for controlling the opening size of the trumpet-shaped feed channel is provided on the end plate of the rotating disc, the adjusting mechanism comprises an adjusting plate and a driving motor, a horizontal axis is provided on the upper end face of the adjusting plate along the length square, the size of the adjusting plate matches the cross-sectional size of the trumpet-shaped feed channel, the adjusting plate is rotatably connected to the entrance of the trumpet-shaped feed channel via the horizontal axis, the driving motor is mounted on the side plate of the rotating disc via a U-shaped bracket, the driving shaft of the driving motor is coaxially fixedly connected to one end of the horizontal axis; a circular gear scale line is provided on the end plate of the rotating disc, an indicating disc is coaxially fixedly connected to the driving shaft of the driving motor, the indicating tip on the indicating disc corresponds to the gear scale line, and a chamfer is provided at the outer corner of the lower end of the adjusting plate.

2. A four-row corn tillage and fertilization vehicle according to claim 1, characterized in that: The support rod of the U-shaped main bracket is configured as a telescopic support rod, which includes a square tube rod, a square telescopic rod, and a spring. A plurality of insertion holes are provided on the upper side of the square tube rod, and a baffle rod is inserted into the insertion hole. The square telescopic rod is slidably connected in the square tube rod, and the spring is installed in the square tube rod. The lower end of the spring is pressed on the upper end surface of the square telescopic rod, and the upper end of the spring is pressed on the baffle rod. A sleeve is provided at the lower end of the square telescopic rod, and the cross bar at the upper end of the U-shaped wheel axle bracket is sleeved in the sleeve. A threaded hole is provided on the side of the sleeve, and a set screw is inserted into the threaded hole.

3. A four-row corn tillage and fertilization vehicle according to claim 2, characterized in that: A limiting mechanism for controlling the sliding stroke of the square telescopic rod is provided between the square tube rod and the square telescopic rod; the limiting mechanism includes a first oblong hole provided along the length direction of the lower side wall of the square tube rod, an oblong pin hole provided on the middle side wall of the square support rod, and a limiting pin, and the limiting pin is inserted between the first oblong hole and the oblong pin hole.

4. The four-row corn tillage and fertilization vehicle according to claim 1 is characterized by: The telescopic rear wheel bracket includes a vertically arranged fixed frame, a lifting frame, an electric push rod B, and a rear wheel. A sliding cavity is provided in the fixed frame, and the lifting frame is slidably connected in the sliding cavity. A plurality of positioning holes are provided on the fixed frame and the lifting frame along the length direction. Positioning bolts are inserted between the positioning holes of the fixed frame and the lifting frame. The base of the electric push rod B is hinged to the middle part of the inner side surface of the fixed frame, and the outer end of the telescopic rod of the electric push rod B is hinged to the lower part of the inner side surface of the lifting frame. The rear wheel is connected to the lower end of the lifting frame, and a driving device for driving the rear wheel to rotate is provided on the inner side of the lifting frame.

5. The four-row corn tillage and fertilization vehicle according to claim 1 is characterized by: The foldable spraying mechanism includes a folding bracket assembly, two lifting mechanisms, and a spraying pipe assembly; the folding bracket assembly includes an intermediate frame and two folding frames, the two lifting mechanisms are connected between two telescopic rear wheel brackets and the two ends of the intermediate frame, the two folding frames are fixedly connected to the two ends of the intermediate frame through hinges, a through hole A is provided at each end of the vertical rod A at the end of the intermediate frame, a through hole B is provided at each end of the vertical rod B at the end of the folding frame, and a positioning pin is inserted between the through hole A and the through hole B; the spraying pipe assembly is installed at the lower part of the intermediate frame and the folding frame; the upper end of the hinge shaft between the two leaves of the hinge protrudes from the upper surface of the hinge, and a handle is provided at the upper end of the hinge shaft.

6. A four-row corn tillage and fertilization vehicle according to claim 5, characterized in that: The lifting mechanism includes an upper connecting rod, a lower connecting rod, and an electric push rod C. The upper connecting rod is hinged between the upper end of the fixed frame and the upper end of the intermediate frame, the lower connecting rod is hinged between the lower end of the fixed frame and the lower end of the intermediate frame, the upper connecting rod and the lower connecting rod are parallel to each other to form a parallel four-link, the fixed support of the electric push rod C is hinged to the inner end of the lower connecting rod, and the telescopic rod of the electric push rod C is hinged to the outer end of the upper connecting rod.

7. The four-row corn tillage and fertilization vehicle according to claim 5 is characterized by: The spraying tube assembly includes a drug delivery tube A and two drug delivery tubes B. The drug delivery tube A is fixed at the lower end of the middle frame along the length direction. The delivery hose is connected to the middle of the drug delivery tube A. The two drug delivery tubes B are respectively fixedly connected to the lower ends of the two folding frames along the length direction. The drug delivery tube A and the drug delivery tubes B on both sides are connected to each other through soft connecting tubes. Multiple spraying nozzles are connected to the drug delivery tube A and the drug delivery tube B.

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