Variable rate fertilizer applicator for dryland corn

Abstract

The application discloses a dry land corn variable fertilizer applicator and relates to the technical field of corn fertilization. The dry land corn variable fertilizer applicator comprises a material box and a strip-shaped transverse frame fixedly installed on a vehicle body. A plurality of support frames are fixedly installed on the strip-shaped transverse frame at equal intervals. A fertilizer cylinder is installed on each support frame through a position control assembly, and an elastic discharging pipe is fixedly connected between the material box and the corresponding fertilizer cylinder. A pit digging and soil taking member is installed on each support frame through a vertical position adjusting member. A soil conveying member matched with the fertilizer cylinder is installed on each support frame. The dry land corn variable fertilizer applicator has the advantages that the corn can be accurately fertilized, the soil generated by pit digging is divided into two parts, part of the soil is directly mixed with the fertilizer and is applied into the pit in advance, and the remaining soil is used to cover the part, so that the corn can be more effectively and accurately fertilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corn fertilization, in particular to a variable fertilizer machine for dry land corn. BACKGROUND

[0002] When large-scale planting of dry land corn is carried out, mechanical setting is used for assistance. The existing corn fertilization device uses a triangularly arranged plow to completely plow the soil near the corn, and then performs fertilization and soil covering. However, due to the interval planting between corns, this extensive fertilization method will cause more fertilizer use and loss. Therefore, the present application provides a variable fertilizer machine for dry land corn to solve the above problems. SUMMARY

[0003] The present application aims to solve the problems in the background art and provides a variable fertilizer machine for dry land corn.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A variable fertilizer machine for dry land corn includes a material box fixedly installed on a vehicle body and a strip-shaped crossbar. A plurality of support frames are fixedly installed on the strip-shaped crossbar at equal intervals. Each support frame is installed with a fertilizer cylinder through a position control assembly. An elastic discharge pipe is fixedly connected between the material box and the corresponding fertilizer cylinder.

[0006] Each support frame is installed with a hole-digging and soil-taking member through a vertical position adjusting member. Each support frame is installed with a soil conveying member matched with the fertilizer cylinder.

[0007] A synchronous opening and closing member is arranged between the fertilizer cylinder and the corresponding vertical position adjusting member.

[0008] Each fertilizer cylinder is installed with a mixing member.

[0009] The lower end of each fertilizer cylinder is fixedly installed with an extension pipe body and a downward material dropping member. The downward material dropping member is matched with the corresponding extension pipe body. A control discharge member is further installed between each extension pipe body and the downward material dropping member.

[0010] In the above-mentioned variable fertilizer machine for dry land corn, the position control assembly includes a hydraulic telescopic element one. Each support frame is fixedly installed with a hydraulic telescopic element one. One end of the hydraulic telescopic element one is fixedly installed with a clamping block. The fertilizer cylinder is fixedly penetrated through the corresponding clamping block.

[0011] Each support frame is provided with a strip-shaped sliding hole. The transverse dimension of the clamping block is greater than the longitudinal width of the strip-shaped sliding hole.

[0012] In the dry land corn variable rate fertilizer applicator, the vertical position adjusting member comprises two hydraulic telescopic elements, and a support assembly is fixedly installed at the lower end of each hydraulic telescopic element.

[0013] The support assembly comprises a support frame one and a support frame two, and each support frame is fixedly installed with one support frame one and one support frame two.

[0014] In the dry land corn variable rate fertilizer applicator, the hole digging and soil taking member comprises a hole tube, a gear one and a rack one, and each hydraulic telescopic element is fixedly installed with one rack one at the lower end, and each support frame two is coaxially installed with a hole tube and a gear one, the hole tube is hollow at both ends, and the gear one is engaged with the rack one.

[0015] The end of the hole tube close to the vehicle body is provided with an arc-shaped inclined surface.

[0016] In the dry land corn variable rate fertilizer applicator, the soil conveying member comprises a spiral conveyor, a soil receiving seat and an elastic inclined pipe, each support frame is fixedly installed with one spiral conveyor at the lower surface, each spiral conveyor is fixedly communicated with one soil receiving seat at the lower end, the soil receiving seat is hollow inside, and an arc-shaped slot hole matched with the hole tube is formed on the soil receiving seat, and two elastic inclined pipes are fixedly communicated with the spiral conveyor, and the elastic inclined pipes are obliquely arranged, and the lower ends of the elastic inclined pipes are fixedly communicated with the corresponding fertilizer cylinders.

[0017] In the dry land corn variable rate fertilizer applicator, the synchronous opening and closing member comprises a partition plate, a toothed rod one, a telescopic connecting rod and an opening and closing gear, each fertilizer cylinder is sealingly rotatably installed with one shaft body one, and each shaft body one is fixedly installed with one partition plate inside the fertilizer cylinder.

[0018] Each shaft body one is fixedly installed with one opening and closing gear outside the fertilizer cylinder, each hydraulic telescopic element is fixedly installed with one telescopic connecting rod at the lower end, and each telescopic connecting rod is fixedly installed with one toothed rod one engaged with the opening and closing gear at the upper end.

[0019] In the dry land corn variable rate fertilizer applicator, each mixing member comprises a mixing rod, each fertilizer cylinder is sealingly rotatably installed with one shaft body two, the part of the shaft body two inside the fertilizer cylinder is fixedly installed with the mixing rod, and the part of the shaft body two outside the fertilizer cylinder is fixedly installed with a gear two.

[0020] The distance between the highest point of the mixing rod and the lowest point of the opening and closing gear is greater than the diameter of the partition plate.

[0021] In the dry land corn variable fertilizer applicator, the downward material dropping component comprises hydraulic telescopic elements three and a fixed frame, one hydraulic telescopic element three is fixedly installed on the outside of each fertilizer cylinder, and a fixed frame is fixedly installed on the lower end of each hydraulic telescopic element three and fixed with the lower end of the corresponding telescopic pipe body.

[0022] A gear rack two is fixedly installed on the fixed frame and engaged with the gear two.

[0023] The telescopic pipe body is composed of an upper hard pipe, an elastic pipe and a lower hard pipe, an upper hard pipe is fixedly installed on the lower end of each fertilizer cylinder, and a lower hard pipe is fixedly installed on each upper hard pipe through the elastic pipe and fixed with the fixed frame.

[0024] In the dry land corn variable fertilizer applicator, each control material dropping component comprises a telescopic rod, a gear rack two, a gear three and a baffle disc, an axle body three is rotatably installed on each upper hard pipe, a baffle disc is fixedly installed on the part of the axle body three in the upper hard pipe, and a gear three is fixedly installed on the part of the axle body three outside the upper hard pipe, the gear rack two is fixedly installed on the fixed frame through the telescopic rod and engaged with the gear three.

[0025] In the dry land corn variable fertilizer applicator, the fixed frame comprises a middle rod, a rod one and a rod two, the lower end of the gear two is fixedly installed with the middle rod, the rod one and the rod two are fixedly installed on the two sides of the middle rod, the upper end of the rod one is fixedly arranged with the gear rack two, and the upper end of the rod two is fixedly arranged with the telescopic rod.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] 1: Precise fertilization of corn can be achieved, and the soil generated by digging holes is divided into two parts, part of which is directly mixed with fertilizer and applied to the hole, and then the remaining soil is used to cover the part, which can more effectively and accurately fertilize the corn.

[0028] 2: The work of the hydraulic telescopic element two can be used to dig holes and transport the soil to the soil receiving seat, and the subsequent layered use can be achieved by cooperating with the screw conveyor and the partition plate, and the work of the hydraulic telescopic element three can be used to realize the mixing of fertilizer and soil and the release of the mixture, and the overall operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A structure diagram of the dry land corn variable fertilizer applicator is provided.

[0030] Figure 2 A structure diagram of the dry land corn variable fertilizer applicator is provided. Figure 1 Another structure diagram from another perspective.

[0031] Figure 3 For Figure 2 Another perspective view of the structure;

[0032] Figure 4 For Figure 3 Enlarged view of the structure of the middle bin section;

[0033] Figure 5 For Figure 4 Enlarged view of the structure of the individual soil contact seat section;

[0034] Figure 6 For Figure 5 Structure view after rotating a certain angle;

[0035] Figure 7 For Figure 6 Structure view after rotating a certain angle;

[0036] Figure 8 For Figure 7 Structure view of the soil contact seat and pit pipe section;

[0037] Figure 9 For Figure 8 Enlarged view of the structure of section A;

[0038] Figure 10 For Figure 8 Enlarged view of the structure of the second support frame and the second hydraulic telescopic element section;

[0039] Figure 11 For Figure 7 Enlarged view of the structure of the third hydraulic telescopic element section;

[0040] Figure 12 For Figure 11 Structure sectional view of the fertilizer application cylinder;

[0041] Figure 13 For Figure 12 Structure view of the third hydraulic telescopic element section;

[0042] Figure 14 For Figure 13 Structure view of the fixed frame.

[0043] In the figure: 1, vehicle body; 2, material box; 3, support frame; 4, fertilizing cylinder; 5, elastic unloading pipe; 6, hydraulic telescopic element one; 7, support frame one; 8, support frame two; 9, pit pipe; 10, gear one; 11, hydraulic telescopic element two; 12, rack one; 13, screw conveyor; 14, soil receiving seat; 15, partition plate; 16, toothed rod one; 17, telescopic connecting rod; 18, mixing rod; 19, gear two; 20, hydraulic telescopic element three; 21, rack two; 22, fixed frame; 23, telescopic rod; 24, toothed rod two; 25, gear three; 26, baffle disc; 27, telescopic pipe body; 28, fixed seat; 29, elastic inclined pipe. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0045] Referring to Figures 1-14 A dry land corn variable rate fertilizer applicator comprises a material box 2 and a strip-shaped cross frame fixedly installed on a vehicle body 1, the material box 2 is provided with a storage groove, the lower surface of the storage groove is inclinedly arranged, the end close to the elastic unloading pipe 5 is the lowest end of the storage groove, a plurality of support frames 3 are fixedly installed on the strip-shaped cross frame at equal intervals, the strip-shaped cross frame is not shown in the figure, one side thereof is fixedly arranged on the vehicle body 1, the other side is fixedly arranged with the plurality of support frames 3, and a plurality of fixed rods can be further fixedly arranged between adjacent two support frames 3 to increase the carrying capacity of the part, one fertilizing cylinder 4 is installed on each support frame 3 through a position control assembly, and the material box 2 is fixedly communicated with the corresponding fertilizing cylinder 4 through the elastic unloading pipe 5, the upper and lower ends of the elastic unloading pipe 5 are made of hard material, the middle part is made of elastic material, and an electric valve is arranged on the hard part to control unloading.

[0046] The position control assembly comprises a hydraulic telescopic element one 6, one hydraulic telescopic element one 6 is fixedly installed on each support frame 3, one clamping block is fixedly installed at one end of the hydraulic telescopic element one 6, and the fertilizing cylinder 4 is fixedly penetrated through the corresponding clamping block; a strip-shaped sliding hole is formed in each support frame 3, and the transverse dimension of the clamping block is greater than the longitudinal width of the strip-shaped sliding hole, so that the clamping block can be directly seen in the drawings in the specification, which is used for limiting and supporting the fertilizing cylinder 4 and does not affect the movement of the fertilizing cylinder 4 on the support frame 3. Figure 4 -attached Figure 7 The hydraulic telescopic element one 6 comprises a hydraulic pump and a hydraulic rod and can be controlled to be telescopic, which is prior art, and the subsequent hydraulic telescopic element two 11 and hydraulic telescopic element three 20 are the same.

[0047] Referring toFigures 1-14 Each support frame 3 is provided with a digging and soil taking member through a vertical position adjusting member, which can drive the digging and soil taking member to rotate a certain angle when operating, and can cooperate with the movement of the vehicle body 1 to play the functions of digging and transporting the subsequent soil to the corresponding position for use; the vertical position adjusting member includes a hydraulic telescopic element two 11 and a support assembly, and the lower surface of each support frame 3 is fixedly provided with a hydraulic telescopic element two 11, and the lower end of each hydraulic telescopic element two 11 is fixedly provided with a support assembly; the support assembly includes a support frame one 7 and a support frame two 8, and the lower surface of each support frame 3 is fixedly provided with a support frame one 7 and a support frame two 8, the lower end of the support frame one 7 is a disc, an annular groove is formed in the disc, and the end face of the annular groove is in the shape of a step, two stepped blocks are fixedly installed on 9, one end of the stepped block is slidably installed on the annular groove, and the two stepped blocks are symmetrically arranged with the rotating shaft of the pit pipe 9 as the center, and the specific shape of the support frame one 7 and the support frame two 8 can be directly seen from the drawings in the description Figure 10

[0048] The digging and soil taking member includes a pit pipe 9, a gear one 10 and a rack one 12, the lower end of each hydraulic telescopic element two 11 is fixedly provided with a rack one 12, and the pit pipe 9 and the gear one 10 are coaxially installed on each support frame two 8, the pit pipe 9 is hollow at both ends, and the gear one 10 is engaged with the rack one 12; one end of the pit pipe 9 close to the vehicle body 1 is provided with an arc-shaped slope, specifically, one end of the pit pipe 9 close to the vehicle body 1 is provided with an arc-shaped slope, so that it can be better inserted into the soil when rotating, and part of the soil can be pushed into the pit pipe 9, and this place directly completes the digging and soil taking by using the thrust in the movement of the vehicle body, and further auxiliary structures for taking soil can be provided on the pit pipe 9, such as adding a spiral drill rod, which is a common existing part, and will not be described again; other structures can also be used to replace the above-mentioned digging and soil taking member, as long as they can meet the above-mentioned functions.

[0049] ​Each support frame 3 is equipped with a soil conveying component that cooperates with the fertilizer cylinder 4. The soil conveying component includes a screw conveyor 13, a soil receiving seat 14, and an elastic inclined tube 29. A screw conveyor 13 is fixedly installed on the lower surface of each support frame 3. A soil receiving seat 14 is fixedly connected to the lower end of each screw conveyor 13. The soil receiving seat 14 is hollow inside and has an arc-shaped slot that cooperates with the pit pipe 9. Two elastic inclined tubes 29 are fixedly connected to the screw conveyor 13. The elastic inclined tubes 29 are inclined and their lower ends are fixedly connected to the corresponding fertilizer cylinder 4. The screw conveyor 13 is existing technology and includes a screw conveying rod and a cylinder. When in use, it can convey the soil collected on the soil receiving seat 14 to the elastic inclined tube 29. At this time, the soil enters the fertilizer cylinder 4 through the two elastic inclined tubes 29 and is located on both sides of the partition 15. At this time, the fertilizer to be applied (the fertilizer required for each corn plant) is already below the partition 15.

[0050] Reference Figures 1-14 A synchronous opening and closing mechanism is provided between the fertilizer cylinder 4 and the corresponding vertical adjustment mechanism; the synchronous opening and closing mechanism includes a partition 15, a gear 16, a telescopic connecting rod 17, and an opening and closing gear. Each fertilizer cylinder 4 has a shaft 1 that is rotatably and sealed, and a partition 15 is fixedly installed on the portion of each shaft 1 located inside the fertilizer cylinder 4; the partition 15 is as follows... Figure 12 In the indicated state, the fertilizer cylinder 4 is sealed and isolated. To ensure the sealing effect, a rubber gasket can be fixedly installed on the outside of the partition 15 to further improve the sealing effect during use. When fertilizer needs to be transported to the fertilizer cylinder 4, the partition 15 is in a vertical state (see attached diagram). Figure 13 (For horizontal sealing); each shaft is fixedly equipped with an opening and closing gear on the part outside the fertilizer cylinder 4. Each hydraulic telescopic element 11 is fixedly equipped with a telescopic connecting rod 17 at its lower end, and the middle part of the telescopic connecting rod 17 is telescopic, so as to cooperate with the movement of the fertilizer cylinder 4. Each telescopic connecting rod 17 is fixedly equipped with a toothed rod 16 that meshes with the opening and closing gear. The toothed rod 16 can be slidably set on the corresponding fertilizer cylinder 4. At the same time, a sliding groove is opened on the outer wall of the fertilizer cylinder 4, and a sliding rod is fixedly set on the side of the toothed rod 16. The sliding rod is slidably set on the sliding groove. The sliding groove can be set as a step. A similar structure can be set later, such as sliding the toothed rod on the telescopic tube 27, specifically set on the upper rigid tube part.

[0051] Reference Figures 1-14Each of the fertilizer cylinders 4 is provided with a mixing member; each of the mixing members comprises a mixing rod 18, and each of the fertilizer cylinders 4 is sealingly and rotatably provided with a shaft body II, the part of the shaft body II located in the fertilizer cylinder 4 is fixedly provided with the mixing rod 18, and the part of the shaft body II located outside the fertilizer cylinder 4 is fixedly provided with a gear II 19; the distance between the highest point of the mixing rod 18 and the lowest point of the opening and closing gear is greater than the diameter of the partition plate 15, so that the rotation of the partition plate 15 does not interfere with the mixing rod 18, and they do not affect each other; the lower end of each of the fertilizer cylinders 4 is fixedly provided with an extension pipe body 27 and a downward discharging member, and the downward discharging member cooperates with the corresponding extension pipe body 27; the extension pipe body 27 is composed of an upper hard pipe, an elastic pipe and a lower hard pipe; the lower end of each of the fertilizer cylinders 4 is fixedly provided with an upper hard pipe, and each of the upper hard pipes is fixedly provided with a lower hard pipe through the elastic pipe, and the lower hard pipe is fixed to the fixed frame 22; the downward discharging member comprises a hydraulic telescopic element III 20 and the fixed frame 22; the outer part of each of the fertilizer cylinders 4 is fixedly provided with a hydraulic telescopic element III 20 through a fixed seat 28; the lower end of each of the hydraulic telescopic element III 20 is fixedly provided with a fixed frame 22; the fixed frame 22 comprises a middle rod, a rod I and a rod II; the lower end of the gear II 19 is fixedly provided with the middle rod, and the two sides of the middle rod are fixedly provided with the rod I and the rod II respectively; the fixed frame 22 is fixed to the lower end part of the corresponding extension pipe body 27; the fixed frame 22 is fixedly provided with a rack II 21 engaged with the gear II 19; specifically, the upper end of the rod I is fixedly provided with the rack II 21.

[0052] Each of the extension pipe bodies 27 and the downward discharging member is further provided with a control discharging member; each of the control discharging members comprises a telescopic rod 23, a toothed rod II 24, a gear III 25 and a baffle disc 26; each of the upper hard pipes is rotatably provided with a shaft body III, and the part of the shaft body III located in the upper hard pipe is fixedly provided with a baffle disc 26, and the part of the shaft body III located outside the upper hard pipe is fixedly provided with a gear III 25; the fixed frame 22 is fixedly provided with the toothed rod II 24 through the telescopic rod 23; specifically, the upper end of the rod II is fixedly provided with the telescopic rod 23, and the toothed rod II 24 is engaged with the gear III 25, so as to control the rotation of the baffle disc 26 at the required time, and control whether the extension pipe body 27 is in the discharging state by the rotation of the baffle disc 26.

[0053] Further, the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited, for example, it can be welding, or gluing, or integrally formed, etc. The skilled in the art is familiar with the conventional means.

[0054] In the present application, the vehicle body 1 normally walks, the speedometer is installed on it, the speed of the wheel can be monitored, the working of the hydraulic telescopic element 6, the hydraulic telescopic element 11 and the hydraulic telescopic element 3 is controlled through the speed of the wheel, and the specific time is through the cooperation of the controller, the speed is monitored by using the speedometer, then the signal is sent to the controller, the working of the electric valve, the hydraulic telescopic element 6, the hydraulic telescopic element 11 and the hydraulic telescopic element 3 is controlled by using the controller;

[0055] The initial state elastic lower baffle 15 is in the vertical state, the baffle disc 26 is in the horizontal state, at this time the electric valve transports the required fertilizer into the fertilizer cylinder 4, then the hydraulic telescopic element 11 and the hydraulic telescopic element 6 are opened, the working of the hydraulic telescopic element 6 can drive the fertilizer cylinder 4 and the related structure to move, at this time the telescopic connecting rod 17 is stretched transversely, Figure 8 As shown, the hydraulic telescopic element 11 is stretched, the pit pipe 9 is driven to rotate through the cooperation of the rack 12 and the gear 10, the left end of the pit pipe 9 is moved to the lower part and is inserted into the soil when rotating, and plays the effect of digging pit along with the walking of the vehicle body 1, then the hydraulic telescopic element 11 is shortened, the pit pipe 9 is driven to reset and returns to Figure 9 As shown, the soil in the pit pipe 9 enters the soil receiving seat 14 and enters the fertilizer cylinder 4 through the screw conveyor 13 and the elastic inclined pipe 29, at this time the soil below the baffle 15 directly contacts with the fertilizer, the baffle 15 is turned from the horizontal state to the vertical state under the action of the rack 16 during the shortening of the hydraulic telescopic element 11.

[0056] The hydraulic telescopic element 3 is opened, the telescopic pipe body 27 and the rack 21 are driven to move through the fixed frame 22, the fertilizer and the soil at the lower part of the fertilizer cylinder 4 are mixed through the mixed rod 18 driven by the gear 19, the fixed frame 22 drives the telescopic rod 23 to stretch in the early stage of the stretching of the hydraulic telescopic element 3, at this time the rack 24 does not move (in order to improve the effect of the setting, the rack 24 is set to slide in damping outside the telescopic pipe body 27), when the telescopic rod 23 stretches to the longest, the rack 24 is driven to move downward, then the gear 25 drives the baffle disc 26 to rotate from the horizontal state to the vertical state, then the mixed fertilizer and the soil directly fall down, through the setting of the hydraulic telescopic element 6, the fertilizer directly falls into the pit of the pit pipe 9, then the baffle 15 is rotated to a certain inclination through the stretching of the hydraulic telescopic element 11, it is needed to be noted that the baffle 15 does not need to stretch to the longest, only the soil on the baffle 15 can fall down, at this time the soil directly falling down plays the effect of covering the soil on the mixed part.

[0057] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A variable rate fertilizer applicator for dryland corn, comprising a tank (2) fixedly mounted on a vehicle body (1) and a bar-shaped crossbar, characterized in that, A plurality of support frames (3) are fixedly installed on the bar-shaped cross frame at equal intervals, and a fertilizer cylinder (4) is installed on each support frame (3) through a position control assembly, and an elastic discharging pipe (5) is fixedly connected between the material box (2) and the corresponding fertilizer cylinder (4); Each support frame (3) is provided with a hole digging and soil taking member through a vertical position adjusting member, and each support frame (3) is provided with a soil conveying member matched with the fertilizer cylinder (4); The fertilizer cylinder (4) is provided with a synchronous opening and closing member between the corresponding vertical position adjusting member; Each fertilizer cylinder (4) is provided with a mixing member; The lower end of each fertilizer cylinder (4) is fixedly provided with an extension pipe body (27) and a downward falling material member, and the downward falling material member is matched with the corresponding extension pipe body (27), and a control discharging member is further provided between each extension pipe body (27) and the downward falling material member; The vertical position adjusting member comprises a hydraulic telescopic element two (11); The hole digging and soil taking member comprises a hole pipe (9); The synchronous opening and closing member comprises a partition plate (15), a tooth rod one (16), a telescopic connecting rod (17), and an opening and closing gear, each shaft one is sealingly and rotatably installed on the fertilizer cylinder (4), and each partition plate (15) is fixedly installed on the part of the shaft one in the fertilizer cylinder (4); Each shaft one is fixedly provided with an opening and closing gear at the part outside the fertilizer cylinder (4), the lower end of each hydraulic telescopic element two (11) is fixedly provided with a telescopic connecting rod (17), and the upper end of each telescopic connecting rod (17) is fixedly provided with a tooth rod one (16) engaged with the opening and closing gear; Each mixing member comprises a mixing rod (18), each fertilizer cylinder (4) is sealingly and rotatably provided with a shaft two, the part of the shaft two in the fertilizer cylinder (4) is fixedly provided with a mixing rod (18), and the part of the shaft two outside the fertilizer cylinder (4) is fixedly provided with a gear two (19); The distance between the highest point of the mixing rod (18) and the lowest point of the opening and closing gear is greater than the diameter of the partition plate (15).

2. The variable rate fertilizer applicator for dryland corn of claim 1, wherein, The position control assembly comprises a hydraulic telescopic element one (6), each support frame (3) is fixedly provided with a hydraulic telescopic element one (6), one end of the hydraulic telescopic element one (6) is fixedly provided with a clamping block, and the fertilizer cylinder (4) penetrates through the corresponding clamping block; Each support frame (3) is provided with a strip-shaped sliding hole, and the transverse dimension of the clamping block is greater than the longitudinal width of the strip-shaped sliding hole.

3. The variable rate fertilizer applicator for dryland corn of claim 1, wherein, The vertical position adjusting member further comprises a supporting assembly, the lower surface of each support frame (3) is fixedly provided with a hydraulic telescopic element two (11), and the lower end of each hydraulic telescopic element two (11) is fixedly provided with a supporting assembly; The supporting assembly comprises a support frame one (7) and a support frame two (8), and the lower surface of each support frame (3) is fixedly provided with a support frame one (7) and a support frame two (8).

4. The variable rate applicator of claim 3, wherein, The pit digging and soil taking component further comprises gear one (10) and rack one (12), one rack one (12) is fixedly installed at the lower end of each hydraulic telescopic element two (11), a pit pipe (9) and a gear one (10) are coaxially installed on each support frame two (8), the pit pipe (9) is hollow at both ends, and the gear one (10) is engaged with the rack one (12). The end of the pit pipe (9) close to the vehicle body (1) is provided with an arc-shaped inclined surface.

5. A variable rate applicator for dryland corn according to claim 4 wherein, The soil conveying component comprises a screw conveyor (13), a soil receiving seat (14) and an elastic inclined pipe (29), one screw conveyor (13) is fixedly installed on the lower surface of each support frame (3), one soil receiving seat (14) is fixedly and communicatively connected to the lower end of each screw conveyor (13), the soil receiving seat (14) is hollow, and an arc-shaped slot hole is formed in the soil receiving seat (14) and matched with the pit pipe (9), two elastic inclined pipes (29) are fixedly and communicatively connected to the screw conveyor (13), and the elastic inclined pipes (29) are inclined and fixedly and communicatively connected to the lower end of the corresponding fertilizer applying barrel (4).

6. The variable rate fertilizer applicator for dryland corn of claim 1, wherein, The downward moving and discharging component comprises a hydraulic telescopic element three (20) and a fixing frame (22), one hydraulic telescopic element three (20) is fixedly installed on the outside of each fertilizer applying barrel (4) through a fixing seat (28), and one fixing frame (22) is fixedly installed at the lower end of each hydraulic telescopic element three (20), and the fixing frame (22) is fixed to the lower end part of the corresponding telescopic pipe body (27). The fixing frame (22) is fixedly installed with a rack two (21) engaged with a gear two (19). The telescopic pipe body (27) is composed of an upper hard pipe, an elastic pipe and a lower hard pipe, one upper hard pipe is fixedly installed at the lower end of each fertilizer applying barrel (4), one lower hard pipe is fixedly installed on each upper hard pipe through an elastic pipe, and the lower hard pipe is fixed to the fixing frame (22).

7. A variable rate applicator for dryland corn according to claim 6 wherein, Each control discharging component comprises a telescopic rod (23), a toothed rod two (24), a gear three (25) and a baffle disc (26), one shaft body three is rotatably installed on each upper hard pipe, a baffle disc (26) is fixedly installed on the part of the shaft body three located in the upper hard pipe, and a gear three (25) is fixedly installed on the part of the shaft body three located outside the upper hard pipe, the fixing frame (22) is fixedly installed with a toothed rod two (24) through a telescopic rod (23), and the toothed rod two (24) is engaged with the gear three (25).

8. A variable rate applicator for dryland corn according to claim 7 wherein, The fixing frame (22) comprises a middle rod, a rod one and a rod two, the lower end of the gear two (19) is fixedly installed with the middle rod, the rod one and the rod two are fixedly installed on the two sides of the middle rod, the upper end of the rod one is fixedly provided with the rack two (21), and the upper end of the rod two is fixedly provided with the telescopic rod (23).

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