A fertilizing device for tomato planting and a method of using the same

Abstract

The present invention relates to the technical field of agricultural planting, and in particular to a fertilizing device for tomato planting and a method for using the same. The fertilizing device comprises a cart and a mounting plate horizontally mounted on the front of the cart, a fertilizer box and a limiting track are fixedly mounted on the mounting plate, a U-shaped tube is arranged at the bottom of the fertilizer box, and one end of the U-shaped tube away from a feeding port is opened upwardly and is mounted at a first liquid outlet in the limiting track; a quantitative cylinder with an opening downwardly arranged is slidably mounted in the limiting track, an injection system comprises a material receiving box installed below the second liquid outlet, the bottom end of the material receiving box is connected to the material receiving cylinder through an inclined connecting pipe, a sleeve extending vertically downward is arranged at the bottom of the material receiving cylinder, a plug is coaxially mounted on the sleeve, and a pressing assembly is arranged on the cart. The technical scheme realizes precise control of a single fertilizer application amount through a measuring cylinder to ensure uniform fertilizer application amount each time, and the pressing assembly drives the plug to move downward in the sleeve, so that liquid fertilizer can be directly applied to the roots of the tomato seedlings.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural planting, and in particular to a fertilizing device for tomato planting and a use method thereof. Background Art

[0002] In order to improve soil fertility, improve crop quality and increase crop yield, people need to use fertilizer devices to fertilize the soil, and the amount of fertilizer directly affects the yield of tomatoes.

[0003] The current fertilization device generally requires workers to carry a fertilizer box on their backs and manually apply fertilizer through a handheld fertilizer tube. The amount of fertilizer applied cannot be controlled, which can easily cause excessive or insufficient fertilizer application, resulting in inconsistent growth of tomatoes. In order to achieve quantitative fertilization, it is usually necessary to load the materials first, then weigh the materials according to the required amount of fertilizer, and then insert the feed drill rod into the soil before feeding the materials, thereby completing the quantitative fertilization of fertilizers. Although the purpose of quantitative fertilization can be achieved, the operation steps are numerous, which increases the time of fertilization and reduces the efficiency of fertilization.

[0004] The invention patent with Chinese patent publication number CN118679922A discloses a quantitative fertilization device for tomato planting. The device directly fertilizes the roots of tomato seedlings by inserting a feed pipe into the soil. However, the opening at the bottom end of the feed pipe is easily blocked by the soil during the frequent insertion into the soil, resulting in a significant reduction in the fertilization efficiency of subsequent fertilizers. Summary of the invention

[0005] In view of the above problems, it is necessary to provide a fertilizing device for tomato planting and a method of using the same in order to solve the above technical problems.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A fertilizing device for tomato planting comprises a cart for walking, and a mounting plate horizontally mounted on the front of the cart, a fertilizer box for storing liquid fertilizer is fixedly mounted on the mounting plate, a feeding port is arranged on one side of the top of the fertilizer box, a U-shaped tube is arranged at the bottom of the fertilizer box, a limiting track is arranged on the mounting plate, the limiting track extends along the radial direction of the fertilizer box, a first liquid outlet hole and a second liquid outlet hole are arranged in the limiting track respectively, one end of the U-shaped tube away from the feeding port is opened upwardly and is mounted at the first liquid outlet hole; a quantitative cylinder with an opening arranged downwardly is slidably mounted in the limiting track, and the quantitative cylinder is located at the first outlet hole. When the metering tube is at the liquid hole, the liquid fertilizer in the fertilizer box enters the metering cylinder through the U-shaped tube. When the metering cylinder is translated to the second liquid outlet hole, the liquid fertilizer in the metering cylinder enters the injection system arranged at the front end of the cart; the injection system comprises a receiving box with an opening downwardly installed below the second liquid outlet hole, the bottom end of the receiving box is connected to the receiving cylinder vertically installed on the cart through an inclined connecting pipe, a sleeve extending vertically downward is arranged at the bottom of the receiving cylinder, a plug is coaxially installed on the sleeve, and a pressing component for driving the plug to move downward in the vertical direction and insert into the soil is arranged on the cart, and the liquid fertilizer in the receiving cylinder flows into the soil through the plug for fertilization.

[0008] Preferably, the driving unit includes a connecting arm and a turntable, one end of the connecting arm is sleeved on the outside of the metering cylinder, the turntable is rotatably mounted on the end of the limiting track away from the fertilizer box, a plug rod is provided on the side of the turntable located at the center of the circle, and the end of the connecting arm away from the metering cylinder is rotatably mounted on the plug rod; the driving unit also includes a rotating driver for driving the turntable to rotate around its own axis, and the rotating driver is fixedly mounted on the trolley; a blocking cover plate extending along the length direction of the mounting plate is provided at the bottom of the metering cylinder, the blocking cover plate is slidably mounted in the limiting track, and the blocking cover plate is used to block the first liquid outlet when the metering cylinder moves toward the second liquid outlet.

[0009] Preferably, an adjusting piston is coaxially arranged in the metering cylinder, the circumference of the adjusting piston is in contact with the inner wall of the metering cylinder, a threaded rod extending vertically upward is arranged on the top of the adjusting piston, and the threaded rod is spirally installed in a threaded hole arranged on the top of the metering cylinder.

[0010] Preferably, a cone mouth is provided at the bottom of the cannula, and the cone mouth has a diameter that decreases downward, an opening is provided at the bottom of the cone mouth, and a blocking cone head is provided in the cone mouth, and the blocking cone head has the same taper as the cone mouth, and the blocking cone head moves along the axis of the cannula to block and release the cone mouth; a guide tube is coaxially provided in the cannula, and the guide tube extends vertically upward to the upper side of the mounting plate, the outer diameter of the guide tube is smaller than the inner diameter of the cannula, and the outer wall of the guide tube is provided with a plurality of legs connected to the inner wall of the cannula; an extension rod extending vertically upward is provided at the top of the blocking cone head, and the extension rod is inserted in the cone mouth and extends to the top of the guide tube, and a downward pressing assembly is provided on the trolley, and the downward pressing assembly drives the guide tube and the extension rod to move in the vertical direction.

[0011] Preferably, the trolley is provided with a vertical slide rail, and a positioning piece is slidably installed on the vertical slide rail. The pressing assembly includes a pressing slide seat slidably installed in the vertical slide rail, and the top end of the guide tube is fixedly connected to the pressing slide seat. The pressing assembly also includes a linear driver for driving the pressing slide seat to move along the vertical slide rail, and the working end of the linear driver is arranged to move in the vertical direction; a top plate is provided at the top of the extension rod, and at least two guide rods extending vertically downward are provided at the bottom of the top plate, and the guide rod is inserted into a guide sleeve provided on the top of the pressing slide seat. A first spring is provided on the outer sleeve of the guide sleeve, and the first spring elastically connects the top plate and the pressing slide seat. The elastic force of the first spring causes the top plate to move downward to seal the cone head and the cone mouth.

[0012] Preferably, a vertical first rack is provided on both sides of the top plate, the first rack is meshed and connected with a central gear rotatably installed on the upper side of the pressing slide, the axis of the central gear is horizontally arranged, and a second rack parallel to the first rack is slidably installed on the pressing slide, the second rack is meshed and connected with the central gear, and the second rack is fixedly connected to a connecting seat arranged on the top of the working end of the linear drive; the pressing slide is provided with a first vertical through hole passing through the pressing slide below the second rack, the cross section of the first vertical through hole is the same as the cross section of the second rack, and a horizontal sliding groove is provided at the bottom of the pressing slide, a sliding baffle is slidably installed in the sliding groove, and a sliding baffle is provided with a shape similar to the first vertical through hole The second vertical through hole is the same; a second spring is arranged in the slide groove, and the second spring elastically connects the pressing slide and the sliding baffle, and the elastic force of the second spring causes the sliding baffle to move to the outside of the two ends of the pressing slide. At this time, the second vertical through hole and the first vertical through hole are staggered, and the second rack is in contact with the top of the sliding baffle to drive the pressing slide to move downward; a head is arranged at the end of the sliding baffle away from the second spring, and an inclined surface is arranged below the head; support blocks extending to the bottom of the pressing slide are arranged on both sides of the positioning member, and an inclined step extending to the bottom of the head is arranged on the positioning member. When the inclined surface of the head is in contact with the inclined step and moves downward, the sliding baffle compresses the second spring and moves into the slide groove to align the second vertical through hole with the first vertical through hole.

[0013] Preferably, a plurality of balls are rotatably mounted on the bottom side of the second rack, and the balls protrude from the bottom surface of the second rack and contact the sliding baffle.

[0014] Preferably, the positioning member is provided with a threaded sleeve perpendicular to the surface of the vertical slide rail, and a locking bolt is rotatably installed in the threaded sleeve.

[0015] Preferably, a lower pressure plate is placed in the fertilizer box, a pull rope is arranged above the lower pressure plate, the pull rope extends to the outer wall of the fertilizer box, and the pull rope is guided to the winding wheel rotatably installed on the cart through a plurality of guide wheels arranged outside the fertilizer box.

[0016] A method for using a fertilizing device for tomato planting, which is applied to a fertilizing device for tomato planting, comprises the following steps:

[0017] Step 1: first add a large amount of liquid fertilizer into the fertilizer box, the driving unit drives the metering cylinder to move to the first liquid outlet, and the liquid fertilizer in the fertilizer box enters the metering cylinder through the U-shaped tube;

[0018] Step 2: The pressing component drives the cannula to move downward to a specified depth;

[0019] Step 3: The driving unit drives the metering cylinder and the liquid fertilizer in the metering cylinder to move horizontally to the second liquid outlet. The liquid fertilizer enters the receiving box through the second liquid outlet, and enters the receiving cylinder and the insert tube through the connecting pipe. The fertilizer flows out from the bottom of the insert tube to fertilize the designated position.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Firstly, the present invention realizes precise control of the single fertilizer application amount through the metering cylinder to ensure the uniformity of each fertilizer application amount. The downward pressure component drives the insert tube to move downward in the sleeve, so that the liquid fertilizer can be directly applied to the roots of the tomato seedlings and directly absorbed by the tomato seedlings, so that the residual fertilizer amount in the soil is less, the pollution to the environment is reduced, the soil is not easy to harden and compact, and the cart drives the equipment to move in the field, thereby improving the efficiency of fertilization.

[0022] Secondly, the metering cylinder of the present invention is driven by a driving unit to reciprocate in a limiting track to realize the movement of liquid fertilizer from the fertilizer box to the injection system. An adjusting piston is arranged in the metering cylinder. The staff can change the distance between the adjusting piston and the bottom opening of the metering cylinder by rotating the threaded rod of the adjusting piston, thereby changing the volume in the metering cylinder and realizing the adjustment of the single fertilizer application amount.

[0023] Thirdly, a blocking cone head is provided in the cone mouth at the bottom of the insert tube in the present invention. When the downward pressing component drives the insert tube to move downward and insert into the soil, the blocking cone head blocks the cone mouth to prevent soil from entering the cone mouth. When the downward pressing slide moves in the vertical slide rail to contact the positioning piece, the insert tube reaches a specified depth, and then the blocking cone head moves up to release the cone mouth so that liquid fertilizer can be applied to the roots of the tomato seedlings through the cone mouth. The positioning piece can adjust the fertilization depth of the insert tube by changing its position on the vertical slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereoscopic view of a fertilizing device for tomato cultivation in a non-working state;

[0025] Figure 2 It is a front view of a fertilizing device for tomato planting in a non-working state;

[0026] Figure 3 yes Figure 2 A three-dimensional cross-sectional view in the AA direction;

[0027] Figure 4 yes Figure 3 A partial enlarged view of point B;

[0028] Figure 5 yes Figure 3 A partial enlarged view of point C;

[0029] Figure 6 yes Figure 3 A partial enlarged view of point D;

[0030] Figure 7 It is a side view of a fertilizing device for tomato planting in working condition;

[0031] Figure 8 yes Figure 7 A cross-sectional view in the EE direction;

[0032] Fig. 9 yes Figure 8 A partial enlarged view of point F;

[0033] Fig.10 yes Figure 8 A local enlarged view of point G;

[0034] Fig.11 A three-dimensional structural breakdown of a fertilizing device for tomato planting Figure 1 ;

[0035] Fig.12 yes Fig.11 A local enlarged view of the H position;

[0036] Fig.13 A three-dimensional structural breakdown of a fertilizing device for tomato planting Figure 2 ;

[0037] Fig.14 yes Fig.13 A local enlarged view of location I.

[0038] The numbers in the figure are: 1. cart; 11. mounting plate; 111. limiting rail; 112. first liquid outlet; 113. second liquid outlet; 12. vertical slide rail; 13. positioning piece; 131. support block; 132. inclined step; 133. threaded sleeve; 134. locking bolt; 2. fertilizer box; 21. feed inlet; 22. U-shaped tube; 23. lower pressure plate; 231. pull rope; 232. guide wheel; 233. winding wheel; 3. quantitative cylinder; 31. drive unit; 311. connecting arm; 312. turntable; 313. plugging rod; 314. rotary drive; 32. blocking cover plate; 33. regulating piston; 331. threaded rod; 34. threaded hole; 4. injection system; 41. material receiving box; 411. connecting pipe; 42. material receiving barrel; 421. sleeve; 43. inserting tube; 431. cone nozzle; 432. guide tube; 433. support foot; 44. blocking cone head; 441. extension rod; 442. top plate; 443. guide rod; 444. first rack; 5. pressing assembly; 51. pressing slide seat; 511. guide sleeve; 512. first spring; 513. center gear; 514. second rack; 515. first vertical through hole; 516. slide groove; 517. second spring; 518. ball; 52. linear drive; 521. connecting seat; 53. sliding baffle; 531. second vertical through hole; 532. top head; 533. inclined plane. DETAILED DESCRIPTION

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

[0040] Reference Figures 1 to 14 :

[0041] A fertilizing device for tomato planting, comprising a cart 1 for walking, and a mounting plate 11 horizontally mounted on the front of the cart 1, a fertilizer box 2 for storing liquid fertilizer is fixedly mounted on the mounting plate 11, a feeding port 21 is arranged on one side of the top of the fertilizer box 2, a U-shaped tube 22 is arranged at the bottom of the fertilizer box 2, a limiting track 111 is arranged on the mounting plate 11, the limiting track 111 extends along the radial direction of the fertilizer box 2, and a first liquid outlet 112 and a second liquid outlet 113 are respectively arranged in the limiting track 111 (such as Fig.11As shown in the figure, the U-shaped tube 22 is installed at the first liquid outlet 112 with one end away from the feed port 21 opening upward; a metering cylinder 3 with an opening downwardly arranged is slidably installed in the limiting track 111. When the metering cylinder 3 is located at the first liquid outlet 112, the liquid fertilizer in the fertilizer box 2 enters the metering cylinder 3 through the U-shaped tube 22. When the metering cylinder 3 is translated to the second liquid outlet 113, the liquid fertilizer in the metering cylinder 3 enters the injection system 4 arranged at the front end of the cart 1; the injection system 4 includes a material receiving box 41 with an opening downwardly arranged below the second liquid outlet 113, the bottom end of the material receiving box 41 is connected to a material receiving cylinder 42 vertically installed on the cart 1 through an inclined connecting pipe 411, a sleeve 421 extending vertically downward is arranged at the bottom of the material receiving cylinder 42, and a plug 43 is coaxially installed on the sleeve 421, and a pressing component 5 for driving the plug 43 to move downward in the vertical direction and insert into the soil is arranged on the cart 1, and the liquid fertilizer in the material receiving cylinder 42 flows into the soil through the plug 43 for fertilization.

[0042] When the fertilization device in the present application is in use, the staff can push the cart 1 to move in the field. The fertilizer box 2 on the cart 1 is filled with a large amount of liquid fertilizer with a good ratio. When the metering cylinder 3 sliding on the limiting track 111 of the mounting plate 11 moves to the first liquid outlet 112, the opening of the metering cylinder 3 is aligned with the first liquid outlet 112, and the opening diameter of the metering cylinder 3 should not be less than the diameter of the first liquid outlet 112. The metering cylinder 3 is connected to one end of the U-shaped tube 22 at the first liquid outlet 112, and the liquid fertilizer in the fertilizer box 2 flows into the metering cylinder 3 through the U-shaped tube 22 at the bottom of the fertilizer box 2 until the metering cylinder 3 is filled. The liquid fertilizer in the metering cylinder 3 is the amount of fertilizer for one application. When the cart 1 moves to the fertilization position, the staff can drive the downward pressure component 5 to move the insert pipe 43 at the front end of the cart 1 downward and insert it into the field. The insert pipe 43 moves down in the sleeve 421 until The bottom end of the insertion tube 43 reaches the root position of the tomato seedlings, and then the metering cylinder 3 drives the liquid fertilizer to move horizontally to the second liquid outlet 113. The liquid fertilizer in the metering cylinder 3 flows into the receiving box 41 of the injection system 4 through the second liquid outlet 113, and then flows into the receiving cylinder 42 at the front end of the cart 1 through the connecting pipe 411 at the bottom of the receiving box 41. The liquid fertilizer entering the receiving cylinder 42 is then fertilized along the insertion tube 43 to the root of the tomato surface. In this embodiment, the metering cylinder 3 is used to achieve precise control of the single fertilizer application amount to ensure the uniformity of the fertilizer application amount each time. The pressing component 5 drives the insertion tube 43 to move downward in the sleeve 421, so that the liquid fertilizer can be directly applied to the roots of the tomato seedlings and directly absorbed by the tomato seedlings, so that the amount of residual fertilizer in the soil is less, the pollution to the environment is reduced, and the soil is not easy to harden and compact. The cart 1 drives the equipment to move in the field to improve the efficiency of fertilization.

[0043] In order to solve the problem of how the metering cylinder 3 moves between the first liquid outlet 112 and the second liquid outlet 113, the following features are specifically provided:

[0044] The driving unit 31 includes a connecting arm 311 and a rotating disk 312. One end of the connecting arm 311 is sleeved on the outside of the quantitative cylinder 3. The rotating disk 312 is rotatably mounted on the end of the limiting track 111 away from the fertilizer box 2. The rotating disk 312 is provided with a plug rod 313 on one side of the center of the circle. The end of the connecting arm 311 away from the quantitative cylinder 3 is rotatably mounted on the plug rod 313. The driving unit 31 also includes a rotating driver 314 that drives the rotating disk 312 to rotate around its own axis. The rotating driver 314 (such as Fig.11 As shown in the figure, the metering cylinder 3 is fixedly mounted on the trolley 1; a blocking cover plate 32 extending along the length direction of the mounting plate 11 is provided at the bottom of the metering cylinder 3, and the blocking cover plate 32 is slidably mounted in the limiting track 111. The blocking cover plate 32 is used to block the first liquid outlet 112 when the metering cylinder 3 moves toward the second liquid outlet 113.

[0045] The driving unit 31 in this embodiment uses a rotating driver 314 installed on the cart 1 as a power source. The rotating driver 314 can be a servo motor or other mechanical structure that allows the user to manually rotate the turntable 312. When the rotating driver 314 drives the turntable 312 to rotate reciprocatingly, the insertion rod 313 pulls one end of the connecting arm 311 to move, thereby pulling the metering cylinder 3 to move in the limiting track 111 through the connecting arm 311. The first liquid outlet 112 and the second liquid outlet 113 can be set at the two end points of the moving range of the metering cylinder 3, which is convenient for positioning the position of the metering cylinder 3. The blocking cover plate 32 set at the bottom opening of the metering cylinder 3 can block the first liquid outlet 112 after the metering cylinder 3 is separated from the first liquid outlet 112, so as to prevent the liquid fertilizer in the fertilizer box 2 from being discharged through the first liquid outlet 112, thereby avoiding fertilizer leakage.

[0046] In order to solve the problem of how to adjust the amount of single fertilization, the following features are specifically set:

[0047] An adjusting piston 33 is coaxially arranged inside the metering cylinder 3 , and the circumference of the adjusting piston 33 is in contact with the inner wall of the metering cylinder 3 . A threaded rod 331 extending vertically upward is arranged on the top of the adjusting piston 33 , and the threaded rod 331 is spirally installed in a threaded hole 34 arranged on the top of the metering cylinder 3 .

[0048] In this embodiment, an adjusting piston 33 is provided in the metering cylinder 3. The staff can change the distance between the adjusting piston 33 and the bottom opening of the metering cylinder 3 by rotating the threaded rod 331 of the adjusting piston 33, thereby changing the volume in the metering cylinder 3 to adjust the single fertilizer application amount.

[0049] In order to solve the problem of how to prevent the soil from blocking the bottom of the inserting tube 43 during the process of inserting the inserting tube 43 into the soil, the following features are specifically set:

[0050] A cone mouth 431 is provided at the bottom of the insertion tube 43, and the cone mouth 431 has a diameter that decreases downward. An opening is provided at the bottom of the cone mouth 431, and a blocking cone head 44 is provided in the cone mouth 431. The blocking cone head 44 has the same taper as the cone mouth 431, and the blocking cone head 44 moves along the axis of the insertion tube 43 to block and release the cone mouth 431; a guide tube 432 is coaxially provided in the insertion tube 43, and the guide tube 432 extends vertically upward to the upper side of the mounting plate 11, the outer diameter of the guide tube 432 is smaller than the inner diameter of the insertion tube 43, and the outer wall of the guide tube 432 is provided with a plurality of supporting legs 433 connected to the inner wall of the insertion tube 43; an extension rod 441 extending vertically upward is provided at the top of the blocking cone head 44, and the extension rod 441 is inserted in the guide tube 432 and extends to the top of the guide tube 432, and a downward pressing component 5 is provided on the trolley 1, and the downward pressing component 5 drives the guide tube 432 and the extension rod 441 to move in the vertical direction.

[0051] The injection system 4 in this embodiment is provided with a cone mouth 431 at the bottom. The taper of the cone mouth 431 makes it easier to insert the cannula 43 into the soil. The blocking cone head 44 in the cone mouth 431 blocks the cone mouth 431 during the process of inserting the cannula 43 into the soil. Therefore, even if the liquid fertilizer enters the receiving barrel 42, it will not be discharged through the cone mouth 431. The blocking cone head 44 can prevent the soil from entering the cone mouth 431, ensuring the smooth fertilization of the cannula 43. The guide tube 432 passes through the sleeve 421 and extends upward to the top of the cart 1. The blocking cone head 44 is inserted into the guide tube 432 through the extension rod 441 and extends to the top of the guide tube 432. Therefore, the pressing component 5 can realize the operation of inserting the insertion tube 43 and the blocking cone head 44 downward into the soil by connecting the guide tube 432 and the top of the extension rod 441. The blocking cone head 44 can move upward relative to the cone mouth 431 after the cone mouth 431 reaches the specified depth, thereby releasing the cone mouth 431, so that the liquid fertilizer can flow into the soil for fertilization after reaching the specified depth, thereby ensuring the accuracy of fertilization.

[0052] In order to solve the problem of how to control the downward movement depth of the cannula 43, the following features are specifically set:

[0053] The cart 1 is provided with a vertical slide rail 12, on which a positioning member 13 is slidably mounted, and the pressing assembly 5 includes a pressing slide seat 51 slidably mounted in the vertical slide rail 12, and the top end of the guide tube 432 is fixedly connected to the pressing slide seat 51 (such as Fig.14 As shown in FIG. 1 , the pressing assembly 5 further includes a linear actuator 52 for driving the pressing slide 51 to move along the vertical slide rail 12, and the working end of the linear actuator 52 is arranged to move in the vertical direction; a top plate 442 is arranged at the top of the extension rod 441, and at least two guide rods 443 (as shown in FIG. 1 ) extending vertically downward are arranged at the bottom of the top plate 442. Fig. 9As shown in the figure, the guide rod 443 is inserted into the guide sleeve 511 set on the top of the pressing slide 51, and the guide sleeve 511 is sleeved with a first spring 512 on the outside. The first spring 512 elastically connects the top plate 442 and the pressing slide 51. The elastic force of the first spring 512 causes the top plate 442 to move downward to the sealing cone head 44 to seal the cone mouth 431.

[0054] The top plate 442 at the top of the extension rod 441 in this embodiment is elastically connected to the pressing slide 51 through the first spring 512. The downward pulling force of the first spring 512 on the top plate 442 makes the blocking cone head 44 fit the cone mouth 431 to block the cone mouth 431. The pressing slide 51 moves along the vertical slide rail 12 of the cart 1 under the drive of the linear drive 52. The linear drive 52 can be an electric push rod or a mechanical structure that allows the staff to manually drive the pressing slide 51 to move in the vertical direction. The positioning piece 13 on the vertical slide rail 12 can move along the vertical slide rail 12 to change its position. After the pressing slide 51 contacts the positioning piece 13, the pressing slide 51 stops moving downward and locks the insertion depth of the cannula 43. Corresponding scales can be set on the vertical slide rail 12 to facilitate the staff to adjust the position of the positioning piece 13 to ensure the accuracy of the fertilization position.

[0055] In order to solve the problem of how to drive the blocking cone head 44 to move upward to release the blocking of the cone mouth 431 after the cannula 43 reaches the specified depth, the following features are specifically set:

[0056] A vertical first rack 444 is provided on both sides of the top plate 442, and the first rack 444 is meshed and connected with the central gear 513 rotatably installed on the upper side of the pressing slide 51, and the axis of the central gear 513 is horizontally arranged, and a second rack 514 parallel to the first rack 444 is slidably installed on the pressing slide 51, and the second rack 514 is meshed and connected with the central gear 513, and the second rack 514 is fixedly connected to the connecting seat 521 provided at the top of the working end of the linear drive 52; the pressing slide 51 is provided with a first vertical through hole 515 penetrating the pressing slide 51 below the second rack 514, and the cross section of the first vertical through hole 515 is the same as the cross section of the second rack 514, and a horizontal slide groove 516 (combined with Fig. 9 and Fig.14), a sliding baffle 53 is slidably installed in the slide groove 516, and a second vertical through hole 531 of the same shape as the first vertical through hole 515 is provided on the sliding baffle 53; a second spring 517 is provided in the slide groove 516, and the second spring 517 elastically connects the downward pressing slide 51 and the sliding baffle 53, and the elastic force of the second spring 517 causes the sliding baffle 53 to move to the outside of the two ends of the downward pressing slide 51. At this time, the second vertical through hole 531 and the first vertical through hole 515 are staggered, and the second rack 514 is attached to the upper part of the sliding baffle 53 to drive the downward pressing slide 51 to move downward; a head 532 is provided at one end of the sliding baffle 53 away from the second spring 517, and an inclined surface 533 is provided below the head 532; support blocks 131 extending to the bottom of the downward pressing slide 51 are provided on both sides of the positioning member 13 (combined with Figure 6 and Fig.14 ), the positioning member 13 is provided with an inclined step 132 extending to the bottom of the top head 532. When the inclined surface 533 of the top head 532 moves downward in contact with the inclined step 132, the sliding baffle 53 compresses the second spring 517 and moves it into the slide groove 516 to align the second vertical through hole 531 with the first vertical through hole 515.

[0057] The connecting seat 521 at the working end of the linear drive 52 in this embodiment is fixedly connected to the second rack 514. When the linear drive 52 drives the connecting seat 521 to move downward, the second rack 514 applies pressure downward, and the bottom end of the second rack 514 is inserted into the first vertical through hole 515 but is resisted by the sliding baffle 53. Therefore, the pressure of the second rack 514 on the sliding baffle 53 can make the pressing slide 51 move downward. At this time, the first rack 444 on the top plate 442 remains in a fixed position, so the blocking cone head 44 follows the downward movement of the cannula 43 while keeping the cone mouth 431 blocked. When the pressing slide 51 moves downward to the support block 131 of the contact positioning member 13, the cannula 43 reaches the specified depth. At this time, the inclined surface 533 below the top head 532 on the sliding baffle 53 fits the inclined step 132 on the positioning member 13, and the top head 532 is compressed by the force to move the second spring 517, so that the second vertical through hole 531 on the sliding baffle 53 moves to align with the first vertical through hole 515. The linear drive 52 can then continue to drive the second rack 514 to pass through the second vertical through hole 531 and move downward. During this process, the central gear 513 rotates to cause the first rack 444 to drive the top plate 442 and the blocking cone head 44 to move upward, so that the fertilizer can be discharged through the cone mouth 431. Similarly, when the linear drive 52 drives the second rack 514 to move upward, the first rack 444 moves downward, and the first rack 444 moves downward until the blocking cone head 44 fits the cone mouth 431 and restricts movement. When the working end of the linear driver 52 moves upward, it can drive the pressing slide 51 to move upward. After the pressing slide 51 moves up to the point where the sliding baffle 53 is separated from the positioning member 13, the sliding baffle 53 is reset under the elastic force of the second spring 517, and the first vertical through hole 515 and the second vertical through hole 531 are staggered again, so that when the downward linear driver 52 drives the second rack 514 to move downward, the second rack 514 cannot directly pass through the second vertical through hole 531 to move downward, thereby realizing the downward movement of the pressing slide 51.

[0058] In order to solve the problem of how to ensure that the sliding baffle 53 can translate when the second rack 514 applies pressure to the sliding baffle 53, the following features are specifically provided:

[0059] A plurality of balls 518 (such as Fig.14 As shown in FIG. 5 ), the ball 518 protrudes from the bottom surface of the second rack 514 and contacts the sliding baffle 53.

[0060] In this embodiment, the bottom end of the second rack 514 contacts the upper side of the sliding baffle 53 through the ball 518, thereby converting the sliding friction between the second rack 514 and the sliding baffle 53 into rolling friction, thereby ensuring smooth translation of the sliding baffle 53.

[0061] In order to solve the problem of how to adjust the position of the positioning member 13 on the vertical slide rail 12, the following features are specifically set:

[0062] A threaded sleeve 133 perpendicular to the surface of the vertical slide rail 12 is provided on the positioning member 13 , and a locking bolt 134 is rotatably installed in the threaded sleeve 133 .

[0063] The positioning member 13 in this embodiment can be fixed on the vertical slide rail 12 by the locking bolt 134 in the threaded sleeve 133. The positioning member 13 can be adjusted in the position on the vertical slide rail 12 to adjust the insertion depth of the insertion tube 43, thereby changing the fertilization depth according to actual conditions.

[0064] In order to solve the problem of how to ensure that the liquid fertilizer in the fertilizer box 2 can enter the metering cylinder 3 through the U-shaped tube 22, the following features are specifically set:

[0065] A lower pressure plate 23 is placed in the fertilizer box 2, and a pull rope 231 is arranged above the lower pressure plate 23. The pull rope 231 extends to the outer wall of the fertilizer box 2. The pull rope 231 is guided to the winding wheel 233 rotatably installed on the cart 1 through a plurality of guide wheels 232 arranged outside the fertilizer box 2.

[0066] A lower pressure plate 23 can be provided in the fertilizer box 2 in this embodiment to squeeze the liquid fertilizer downward to ensure that the liquid fertilizer flows into the metering cylinder 3. The lower pressure plate 23 can have a certain weight. One end of the pull rope 231 is connected to the lower pressure plate 23. When the staff rotates the winding wheel 233 on the cart 1, the lower pressure plate 23 in the fertilizer box 2 is pulled to the top of the fertilizer box 2, so that fertilizer can be added into the fertilizer box 2 through the feed port 21.

[0067] A method for using a fertilizing device for tomato planting, which is applied to a fertilizing device for tomato planting, comprises the following steps:

[0068] Step 1: first add a large amount of liquid fertilizer into the fertilizer box 2, the driving unit 31 drives the metering cylinder 3 to move to the first liquid outlet 112, and the liquid fertilizer in the fertilizer box 2 enters the metering cylinder 3 through the U-shaped tube 22;

[0069] Step 2: The pressing component 5 drives the cannula 43 to move downward to a specified depth;

[0070] Step 3, the driving unit 31 drives the metering cylinder 3 and the liquid fertilizer in the metering cylinder 3 to move horizontally to the second liquid outlet 113, the liquid fertilizer enters the material receiving box 41 through the second liquid outlet 113, and enters the material receiving cylinder 42 and the insertion tube 43 through the connecting pipe 411, and the fertilizer flows out from the bottom end of the insertion tube 43 to fertilize the designated position.

[0071] Working principle: the staff can push the cart 1 to move in the field. The fertilizer box 2 on the cart 1 is filled with a large amount of liquid fertilizer with a good ratio. When the quantitative cylinder 3 sliding on the limit track 111 of the mounting plate 11 moves to the first liquid outlet 112, the opening of the quantitative cylinder 3 is aligned with the first liquid outlet 112, and the liquid fertilizer in the fertilizer box 2 flows into the quantitative cylinder 3 through the U-shaped tube 22 at the bottom of the fertilizer box 2 until the quantitative cylinder 3 is filled. The liquid fertilizer in the quantitative cylinder 3 is the amount of fertilizer for one application. When the cart 1 moves to the fertilization position, the staff can drive the pressing component 5 to move the insertion tube 43 at the front end of the cart 1 downward. After entering the field, the insertion tube 43 moves downward in the material receiving barrel 42 until the bottom end of the insertion tube 43 reaches the root position of the tomato seedlings, and then the blocking cone head 44 at the cone mouth 431 of the insertion tube 43 moves upward to release the blocking of the cone mouth 431, and the driving unit 31 drives the metering cylinder 3 to drive the liquid fertilizer to move horizontally to the second liquid outlet 113, and the liquid fertilizer in the metering cylinder 3 flows into the material receiving box 41 of the injection system 4 through the second liquid outlet 113, and then flows into the material receiving barrel 42 at the front end of the cart 1 through the connecting pipe 411 at the bottom of the material receiving box 41, and the liquid fertilizer entering the material receiving barrel 42 is fertilized along the insertion tube 43 to the roots of the tomato surface.

[0072] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A fertilizing device for tomato planting, comprising a cart (1) for walking, and a mounting plate (11) mounted horizontally on the front of the cart (1), wherein a fertilizer box (2) for storing liquid fertilizer is fixedly mounted on the mounting plate (11), characterized in that: A feed inlet (21) is provided on one side of the top of the fertilizer box (2), a U-shaped tube (22) is provided at the bottom of the fertilizer box (2), a limit track (111) is provided on the mounting plate (11), the limit track (111) extends in the radial direction of the fertilizer box (2), a first liquid outlet hole (112) and a second liquid outlet hole (113) are provided in the limit track (111), and an end of the U-shaped tube (22) away from the feed inlet (21) is installed upward at the first liquid outlet hole (112); A dosing cylinder (3) with an opening facing downward is slidably mounted in the limiting track (111); when the dosing cylinder (3) is located at the first liquid outlet (112), liquid fertilizer in the fertilizer box (2) enters the dosing cylinder (3) through the U-shaped tube (22); when the dosing cylinder (3) is translated to the second liquid outlet (113), the liquid fertilizer in the dosing cylinder (3) enters an injection system (4) disposed at the front end of the cart (1); The injection system (4) comprises a material receiving box (41) with an opening downwardly mounted below the second liquid outlet (113); the bottom end of the material receiving box (41) is connected to a material receiving barrel (42) vertically mounted on the cart (1) via an inclined connecting pipe (411); a sleeve (421) extending vertically downward is provided at the bottom of the material receiving barrel (42); a plug (43) is coaxially mounted on the sleeve (421); a pressing assembly (5) is provided on the cart (1) for driving the plug (43) to move downward in a vertical direction and be inserted into the soil; and liquid fertilizer in the material receiving barrel (42) flows into the soil through the plug (43) for fertilization; The bottom of the cannula (43) is provided with a cone mouth (431), the cone mouth (431) has a diameter that decreases downwards, the bottom of the cone mouth (431) is provided with an opening, a blocking cone head (44) is provided inside the cone mouth (431), the blocking cone head (44) has the same taper as the cone mouth (431), and the blocking cone head (44) moves along the axis of the cannula (43) to block and release the cone mouth (431); A guide tube (432) is coaxially arranged inside the insertion tube (43), the guide tube (432) vertically extends upward to the upper side of the mounting plate (11), the outer diameter of the guide tube (432) is smaller than the inner diameter of the insertion tube (43), and the outer wall of the guide tube (432) is provided with a plurality of legs (433) connected to the inner wall of the insertion tube (43); An extension rod (441) extending vertically upward is provided at the top of the blocking cone head (44); the extension rod (441) is inserted into the cone mouth (431) and extends to the top of the guide tube (432); a pressing assembly (5) is provided on the trolley (1); the pressing assembly (5) drives the guide tube (432) and the extension rod (441) to move in the vertical direction.

2. A fertilizing device for tomato planting according to claim 1, characterized in that: It also comprises a driving unit (31), the driving unit (31) comprising a connecting arm (311) and a rotating disk (312), one end of the connecting arm (311) being sleeved outside the metering cylinder (3), the rotating disk (312) being rotatably mounted on an end of the limiting track (111) away from the fertilizer box (2), an insertion rod (313) being provided on one side of the rotating disk (312) located at the center of the circle, and an end of the connecting arm (311) away from the metering cylinder (3) being rotatably mounted on the insertion rod (313); The driving unit (31) further comprises a rotation driver (314) for driving the rotating disk (312) to rotate around its own axis, and the rotation driver (314) is fixedly mounted on the trolley (1); A blocking cover plate (32) extending along the length direction of the mounting plate (11) is provided at the bottom of the metering cylinder (3). The blocking cover plate (32) is slidably mounted in the limiting track (111). The blocking cover plate (32) is used to block the first liquid outlet (112) when the metering cylinder (3) moves towards the second liquid outlet (113).

3. A fertilizing device for tomato planting according to claim 2, characterized in that: An adjusting piston (33) is coaxially arranged inside the quantitative cylinder (3), the circumferential side of the adjusting piston (33) is in contact with the inner wall of the quantitative cylinder (3), and a threaded rod (331) extending vertically upward is arranged on the top of the adjusting piston (33), and the threaded rod (331) is screwed into a threaded hole (34) arranged on the top of the quantitative cylinder (3).

4. A fertilizing device for tomato planting according to claim 1, characterized in that: The trolley (1) is provided with a vertical slide rail (12), and a positioning member (13) is slidably mounted on the vertical slide rail (12). The pressing assembly (5) includes a pressing slide seat (51) slidably mounted in the vertical slide rail (12), and the top end of the guide tube (432) is fixedly connected to the pressing slide seat (51). The pressing assembly (5) also includes a linear drive (52) for driving the pressing slide seat (51) to move along the vertical slide rail (12), and the working end of the linear drive (52) is arranged to move in the vertical direction. A top plate (442) is provided at the top of the extension rod (441), and at least two guide rods (443) extending vertically downward are provided at the bottom of the top plate (442). The guide rods (443) are inserted into a guide sleeve (511) provided at the top of the downward pressing slide (51). A first spring (512) is provided on the outside of the guide sleeve (511). The first spring (512) elastically connects the top plate (442) and the downward pressing slide (51). The elastic force of the first spring (512) causes the top plate (442) to move downward to the sealing cone head (44) to seal the cone mouth (431).

5. A fertilizing device for tomato planting according to claim 4, characterized in that: A vertical first rack (444) is provided on both sides of the top plate (442), the first rack (444) is meshed with a central gear (513) rotatably mounted on the upper side of the pressing slide (51), the axis of the central gear (513) is arranged horizontally, a second rack (514) parallel to the first rack (444) is slidably mounted on the pressing slide (51), the second rack (514) is meshed with the central gear (513), and the second rack (514) is fixedly connected to a connecting seat (521) arranged on the top of the working end of the linear drive (52); The pressing slide (51) is located below the second rack (514) and is provided with a first vertical through hole (515) penetrating the pressing slide (51). The cross section of the first vertical through hole (515) is the same as the cross section of the second rack (514). A horizontal sliding groove (516) is provided at the bottom of the pressing slide (51). A sliding baffle (53) is slidably installed in the sliding groove (516). The sliding baffle (53) is provided with a second vertical through hole (531) having the same shape as the first vertical through hole (515). A second spring (517) is arranged in the slide groove (516), and the second spring (517) elastically connects the downward pressing slide seat (51) and the sliding baffle plate (53). The elastic force of the second spring (517) causes the sliding baffle plate (53) to move toward the outside of the two ends of the downward pressing slide seat (51). At this time, the second vertical through hole (531) and the first vertical through hole (515) are staggered, and the second rack (514) fits the upper part of the sliding baffle plate (53) to drive the downward pressing slide seat (51) to move downward; A top head (532) is provided at one end of the sliding baffle (53) away from the second spring (517), and an inclined surface (533) is provided below the top head (532); Support blocks (131) extending to the bottom of the downward pressing slide (51) are arranged on both sides of the positioning member (13), and an inclined step (132) extending to the bottom of the top head (532) is arranged on the positioning member (13). When the inclined surface (533) of the top head (532) fits the inclined step (132) and moves downward, the sliding baffle (53) compresses the second spring (517) and moves into the sliding groove (516) so that the second vertical through hole (531) is aligned with the first vertical through hole (515).

6. A fertilizing device for tomato planting according to claim 5, characterized in that: A plurality of balls (518) are rotatably mounted on the bottom side of the second rack (514); the balls (518) protrude from the bottom surface of the second rack (514) and contact the sliding baffle (53).

7. A fertilizing device for tomato planting according to claim 4, characterized in that: The positioning member (13) is provided with a threaded sleeve (133) perpendicular to the surface of the vertical slide rail (12), and a locking bolt (134) is rotatably installed in the threaded sleeve (133).

8. A fertilizing device for tomato planting according to claim 1, characterized in that: A lower pressure plate (23) is placed in the fertilizer box (2), a pull rope (231) is arranged above the lower pressure plate (23), the pull rope (231) extends to the outer wall of the fertilizer box (2), and the pull rope (231) is guided to a winding wheel (233) rotatably mounted on the cart (1) through a plurality of guide wheels (232) arranged outside the fertilizer box (2).

9. A method for using a fertilizing device for tomato planting, applied to the fertilizing device for tomato planting according to claim 1, characterized in that: The following steps are involved: Step 1: first, a large amount of liquid fertilizer is added into the fertilizer box (2); the driving unit (31) drives the metering cylinder (3) to move to the first liquid outlet (112); and the liquid fertilizer in the fertilizer box (2) enters the metering cylinder (3) through the U-shaped tube (22); Step 2: The pressing component (5) drives the cannula (43) to move downward to a specified depth; Step 3: The driving unit (31) drives the metering cylinder (3) and the liquid fertilizer in the metering cylinder (3) to move horizontally to the second liquid outlet hole (113); the liquid fertilizer enters the material receiving box (41) through the second liquid outlet hole (113), and enters the material receiving cylinder (42) and the insertion tube (43) through the connecting tube (411); the fertilizer flows out from the bottom end of the insertion tube (43) to fertilize the designated position.

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