CN219893848U - Liquid fertilizer spraying device for corn leaf surface topdressing - Google Patents

Abstract

The utility model discloses a liquid fertilizer spraying device for corn leaf top dressing, which belongs to the technical field of agricultural production equipment and includes: a liquid storage device, a moving device and a spraying vertical rod; the moving device is installed on the liquid storage device At the bottom end of the device, the liquid storage device includes a long liquid storage rod, a short liquid storage rod, a rotating shaft one and a rotating shaft two. A plurality of the long liquid storage rods are hinged through the second rotating shaft, and a pair of the short liquid storage rods are The long liquid storage rods at one and both ends of the rotating shaft are hinged, and the long liquid storage rods are connected with the short liquid storage rods. A plurality of the spraying vertical rods are installed on the long liquid storage rods and the The bottom end of the short reservoir rod. The utility model can adjust the spraying distance and spraying height between the spraying vertical rods through the hinged connection between the long liquid storage rod and the short liquid storage rod, as well as the height adjustment mechanism and the driven mechanism, so as to adapt to corn planting conditions. The ground will not cause damage to corn leaves.

Description

A liquid fertilizer spraying device for corn leaf top dressing

Technical field

The utility model belongs to the technical field of agricultural production equipment, and in particular relates to a liquid fertilizer spraying device used for top dressing of corn leaves.

Background technique

Corn is an annual monoecious cross-pollinated plant with tall plants and strong stems. It is an important food crop and feed crop in my country. Its planting area and total output are second only to rice and wheat. Corn is rich in nutrients, including protein and fat. , vitamins, various trace elements, cellulose, etc., it has high nutritional value and is an excellent food crop. As a food crop in great demand in my country, corn is of great significance to agriculture, animal husbandry, food industry, aquaculture, and even the chemical industry. Increasing corn production is a top priority to ensure a better life for the people. Generally speaking, the growth cycle of corn from sowing to maturity is 100 to 120 days. At the same time, corn is divided into spring sowing and summer sowing. Spring sowing is carried out from the end of April to the beginning of May. It can be harvested at the end of July and early August and can be harvested in early to mid-June. Sowing in summer and harvesting in early to mid-September. In the entire growth cycle of corn, different stages correspond to different time periods, which can generally be divided into: seedling stage, ear stage, tasseling stage, powdering stage, silking stage and late maturity stage. The ear stage can be divided into the jointing stage, the large trumpet stage and the small trumpet stage. The silking stage includes the grain formation stage (also known as the filling stage), the milk ripening stage and the wax ripening stage. The filling period is a critical period that determines the number and weight of corn ears and requires sufficient nutrient supply. At this time, soil fertilization not only requires more fertilizer, but also has a slower effect. If the fertilizer is sprayed on the leaves, it will act quickly and the effect will be significant. In the prior art, when corn is sprayed with foliar fertilizer, it is generally sprayed manually with a backpack sprayer. This method is inefficient, time-consuming and labor-intensive. Moreover, due to the height limit of humans, there will be problems when manually spraying liquid fertilizer on corn. Incomplete spraying results in uneven fertilization of corn; at the same time, manual spraying of corn requires people to enter the corn field, making the spraying operation very difficult.

At present, the method of top dressing corn leaves in China still relies on manual spraying, and most of them pursue the improvement of spray booms. The main method of top dressing abroad uses a high-riding car to push a forearm sprayer to apply fertilizer. This method requires farmers to be able to drive and operate complex mechanical facilities, and cars driving in corn fields may cause damage to corn plants and cause corn decline. For example, the Chinese patent publication number "CN202445019U" discloses a high-efficiency spray boom. It involves a sprayer spray rod, including a handle, a nozzle, a spray rod, and a nozzle. The rear end of the handle is connected to a hose, and the hose leads to the medicine box. A knob is provided on the nozzle, and three nozzles are connected to the handle, on the left and right sides. One each on the front and the front. The front end of each pipe is connected to the spray rod, and the front end of the spray rod is connected to the nozzle. In addition: the three takeovers are in one plane. The nozzle has a casing structure, that is, the front spray rod is placed in the rear spray rod, and the front spray rod can be slid and fixed in the rear spray rod. The length of the spray boom or the total length of the rear spray boom and the front spray boom is 1+0.2 meters. When spraying manually, you can hold the handle and control the spray switch with the knob, and spray in various modes by selecting spiral nozzles or atomizing nozzles. Compared with traditional manual spraying devices, this device can improve spraying efficiency. However, when spraying, the device still retains the manual spraying method. For example, Chinese patent publication No. "CN114273101A" discloses a gibberellin spraying device for increasing corn yield. The frame of the device is equipped with a sliding control mechanism for controlling the vertical spray rod, and the bottom of the frame is equipped with a moving mechanism. Through the moving mechanism, the frame can move forward in the gap between the left and right sides of the corn. During the forward movement, the vertical spraying lever is used to control the rack. The rod can spray gibberellin on the left and right sides of the corn. At the same time, when the rack travels into the front and rear gaps of the corn, the sliding control mechanism can be used to change the position of the vertical spray rod so that the vertical spray rod can spray the front and rear sides of the corn. The gibberellin is sprayed on the side, and the vertical spray rod can spray the corn in a convex tooth line with the cooperation of the moving mechanism and the sliding control mechanism. For corn plants that have not been sprayed with gibberellin, the device needs to turn the frame after traveling to the end of the corn field and then spray the original area repeatedly. Although this device realizes automatic spraying, during operation, it not only requires the device to move forward longitudinally, but also requires a sliding control mechanism to drive the vertical spray rod to move transversely in order to complete the comprehensive spraying of a single corn plant. The movement method is complicated. During this process, the vertical spray boom collides with the front, rear, left, and right sides of the corn, and all four sides of the corn leaves may be damaged by impact, which in turn leads to a reduction in corn yield. In addition, this device cannot ensure that the corn plants in the most side row are sprayed directly on all sides. When the device is in operation, the corn plants are enclosed by unfolded folding curtains, and the unsprayed portion of the corn is supplemented in a small amount by the sprayed water mist floating in the air. It cannot achieve full spraying of gibberellins. In addition, the folding curtains deployed when the device advances will increase the impact and friction between the corn leaves on both sides of the folding beam and the folding curtains, causing damage to the corn leaves during the advancement of the device. In addition, this device can only move the vertical spray rod as a whole by moving the sliding sleeve, and cannot change the spacing between the vertical spray rods, and cannot be applied to corn fields with different planting spacings. Considering that the device is too large, if the height of the device is not appropriate during the advancement process, the crossbar of the device will hit the corn stalks. The continuous driving force of the device may cause the crossbar to break the corn stalks and cause irreversible damage. In this regard, the present utility model proposes a liquid fertilizer spraying device for corn leaf topdressing that is safer and more efficient.

Utility model content

In view of this, the present utility model provides a liquid fertilizer spraying device for corn leaf top dressing to solve the above technical problems.

In order to achieve the above purpose, the present utility model adopts the following technical solutions:

A liquid fertilizer spraying device for corn leaf top dressing, including: a liquid storage device, a moving device and a spraying vertical rod; the moving device is installed at the bottom end of the liquid storage device, and the liquid storage device includes Long liquid storage rods, short liquid storage rods, rotating shafts one and two. A plurality of the long liquid storage rods are hinged through the rotating shaft two. A pair of the short liquid storage rods pass through the long ones at both ends of the rotating shaft. The liquid storage rod is hinged, the long liquid storage rod is connected with the short liquid storage rod, and a plurality of the spraying vertical rods are installed at the bottom ends of the long liquid storage rod and the short liquid storage rod.

Further, the moving device includes a height adjustment mechanism, a vertical rod, a driving mechanism and a driven mechanism. The vertical rod is installed on the top of the driving mechanism, and the height adjustment mechanism is installed on the top of the vertical rod. The top end of the height adjustment mechanism is fixedly connected to the end of the short liquid storage rod, and the driven mechanism is installed on the bottom end of the second rotating shaft.

Further, the driving mechanism includes a triangular wheel frame, an electric driving wheel and a battery. The triangular wheel frame is installed at the bottom end of the vertical rod. The electric driving wheel is installed at the bottom end of the triangular wheel frame. The battery is installed on the triangular wheel frame, and the electric driving wheel is electrically connected to the battery.

Further, the height adjustment mechanism includes a fixed sleeve, a telescopic rod, an electric push rod, a lower support plate, an upper support plate and a height adjustment button. The fixed sleeve is installed on the vertical rod. The top end of the telescopic rod is slidably connected in the fixed sleeve. The top of the telescopic rod is fixedly connected to the end of the short liquid storage rod. The upper support plate is installed on the telescopic rod. On the side wall of the first, the lower support plate is installed on the side wall of the fixed sleeve, the bottom end of the electric push rod is connected to the lower support plate, and the top end of the electric push rod is connected to the lower support plate. Once the above support plate is connected, the height adjustment button is installed on the triangular frame and is electrically connected to the electric push rod.

Further, the driven mechanism includes a fixed sleeve, a round rod, a telescopic rod, a self-driving wheel, an upper supporting plate, an electric push rod and a lower supporting plate; the self-driving wheel is installed on the circular rod. The bottom end of the rod, the fixed sleeve 2 is installed on the top of the round rod, the telescopic rod 2 is slidingly connected in the fixed sleeve 2, the top of the telescopic rod 2 is with the bottom end of the rotating shaft, so The upper support plate 2 is installed on the side wall of the telescopic rod 2, the lower support plate 2 is installed on the side wall of the fixed sleeve 2, and the top end of the electric push rod 2 is connected to the upper support plate , the two bottom ends of the electric push rod are connected to the lower support plate, the second electric push rod is electrically connected to the height adjustment button, and the self-driving wheel is electrically connected to the battery.

Furthermore, multiple groups of atomizing nozzles are provided on the side wall of the spraying vertical rod, and each group of atomizing nozzles is distributed crosswise on the spraying vertical rod.

Further, the liquid storage device also includes a sensor, which is installed on the side walls of the rotating shaft one and the second rotating shaft and the side wall of the telescopic rod one. The sensor is connected with the electric drive wheel and the electric drive wheel. Described from the drive wheel electrical connection.

The beneficial effects of this utility model are:

The utility model can adjust the V-shaped angle between the long liquid storage rod and the short liquid storage rod by manually adjusting the positions of the first and second rotating shafts, thereby changing the lateral spacing between the vertical spraying rods connected below, thereby achieving It is suitable for fertilizing corn fields with different planting densities; the height adjustment structure on the top of the triangular frame can make this device adapt to corn fertilizing needs of different heights; through the cooperation between the electric-driven triangular frame and the self-driving wheel , which allows the device to get rid of manual operation during the fertilization process and improves the fertilization efficiency; the triangular wheel frame with high stability and three self-driving wheels with front and rear staggered design can ensure the stability of the device during travel. ; When the device moves, the cylindrical spraying vertical rod and the cylindrical driven mechanism move synchronously in the gap between the corn stalks. Compared with the design of the rectangular rod, this design can reduce the damage to the corn when the device comes into contact with the corn. Damage to the rod; the sensor set on the liquid storage device of this device can promptly sense the contact of the jade and corn stalks of the device and adjust the operating status of the device accordingly, avoiding the device's failure due to manual setting errors in the height of the device and the spraying vertical rod. During the advancement process, it will cause irreversible damage such as breakage to the corn stalks.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description These are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a liquid fertilizer spraying device used for top dressing of corn leaves.

Figure 2 is a schematic diagram of the internal structure of the short liquid storage rod.

Figure 3 is a schematic diagram of the internal structure of the long liquid storage rod.

Figure 4 is a schematic structural diagram of the height adjustment mechanism.

Figure 5 is a schematic structural diagram of the liquid storage device.

Figure 6 is a schematic structural diagram of the driving mechanism.

Figure 7 is a schematic structural diagram of the driven mechanism.

Figure 8 is a positioning diagram showing the orientation of the small holes on the vertical rod for spraying.

Figure 9 is a schematic diagram of partial spraying of vertical poles and full spraying of corn plants.

Among them, in the picture:

1-Rotating shaft one, 2-Rotating shaft two, 3-Height adjustment mechanism, 301-Fixed sleeve one, 302-Telescopic rod one, 303-Electric push rod one, 304-Lower support plate one, 305-Upper support plate one, 306-height adjustment button, 4-spray vertical rod, 5-liquid storage device, 501-long liquid storage rod, 502-short liquid storage rod, 503-infusion cap, 504-micro water pump, 505-sensor, 6-vertical Rod, 7-driving mechanism, 701-triangle frame, 702-electric driving wheel, 703-battery, 8-driven mechanism, 801-fixed sleeve 2, 802-round rod, 803-telescopic rod 2, 804-automatic Driving wheel, 805-upper support plate 2, 806-electric push rod 2, 807-lower support plate 2, 9-atomizing nozzle.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Referring to Figures 1-9, the utility model provides a liquid fertilizer spraying device for corn leaf top dressing, including: a liquid storage device 5, a moving device and a spraying vertical rod 4; the moving device is installed on the liquid storage device. At the bottom of the device 5, the entire liquid storage device 5 includes four long liquid storage rods 501, three rotating shafts 22, two rotating shafts 11 and two short liquid storage rods 502, and the first and fourth long liquid storage rods 502. One end of the rod 501 is connected to an arm of the rotating shaft 22, and the other end is connected to an arm of the rotating shaft 1. The other arms of the two rotating shafts 11 are respectively connected to a short liquid storage rod 502, and the entire liquid storage The interior of device 5 is connected everywhere.

One end of the short horizontal liquid storage rod 502 is fixedly connected to the moving device, but not connected, and the other end of the hollow short liquid storage rod 502 is connected to the arm of the rotating shaft 1 and is internally connected, and the other end of the rotating shaft 1 is connected. One arm is connected to one end of the long liquid storage rod 501 and communicates internally, the other end of the long liquid storage rod 501 is connected to an arm of the rotating shaft 2 2 and is internally connected, and the other arm of the rotating shaft 2 2 is connected to another long storage rod 501 . The end of the liquid rod 501 is connected, and the other end of the long liquid storage rod 501 is connected to an arm of the other rotating shaft 22, and so on. Three infusion holes are provided on the top of the two short liquid storage rods 502, allowing liquid fertilizer to enter the liquid storage device 5. The infusion holes are equipped with an infusion cover 503, which can be used as a sealing member of the device. The bottom end of each short liquid storage rod 502 is connected with two equally spaced vertical spraying vertical rods 4. The bottom end of each long liquid storage rod 501 is connected with three equally spaced vertically placed spraying vertical rods 4. , spray the vertical rod 4 and it is cylindrical. A micro water pump 504 is provided in both the long liquid storage rod 501 and the short liquid storage rod 502 to provide power for spraying pesticides on the vertical rod 4 . When the device enters the corn field, the liquid fertilizer stored in the liquid storage device 5 will be pumped into the spraying vertical rod 4 under the action of the micro water pump 504 to spray pesticides.

In a preferred embodiment, the moving device includes a height adjustment mechanism 3, a vertical rod 6, a driving mechanism 7 and a driven mechanism 8. The vertical rod 6 is installed on the top of the driving mechanism 7, and the height adjustment mechanism 3 is installed on the top of the vertical rod 6. , the top end of the height adjustment mechanism 3 is fixedly connected to the end of the short liquid storage rod 502, and the driven mechanism 8 is installed on the bottom end of the rotating shaft 22.

In a preferred embodiment, the driving mechanism 7 includes a triangular frame 701, an electric driving wheel 702 and a battery 703. The electric driving wheel 702 is installed at the bottom of the triangular frame 701, and the battery 703 is installed on the triangular frame 701. The top of 701 is connected to the bottom of vertical pole 6, and the electric drive wheel 702 and battery 703 are electrically connected.

In a preferred embodiment, the height adjustment mechanism 3 includes a fixed sleeve 301, a telescopic rod 302, an electric push rod 303, a lower support plate 304, an upper support plate 305 and a height adjustment button 306. The fixed sleeve is 301 is installed at the top of the vertical rod 6, the telescopic rod 302 is slidingly connected in the fixed sleeve 301, the top of the telescopic rod 302 is fixedly connected to the end of the short liquid storage rod 502, and the upper support plate 305 is installed on the telescopic rod On the side wall of the first 302, the lower support plate 304 is installed on the side wall of the fixed sleeve 301. The bottom end of the electric push rod 303 is connected to the lower support plate 304, and the top end of the electric push rod 303 is connected to the upper support plate 305. connection, the electric push rod 303 can drive the telescopic rod 302 to lift and slide in the fixed sleeve 301; the height adjustment button 306 is installed on the triangular frame 701 and is electrically connected to the electric push rod 303. The height adjustment button 306 has With the three-speed adjustment function of up, stop, and down, during the process of spraying corn plants, farmers can set the height of the device in advance through the height adjustment button 306 before the device enters the corn field.

In a preferred embodiment, the driven mechanism 8 includes a fixed sleeve 2, a round rod 802, a telescopic rod 803, a self-driving wheel 804, an upper support plate 805, an electric push rod 806 and a lower support plate 807; three The bottom end of each rotating shaft 22 is connected to the top of the three telescopic rods 803 of the driven mechanism 8. The cylindrical telescopic rods 803 are respectively slid into the corresponding fixed sleeves 801. The bottom of the fixed sleeves 801 is The end is connected to the top of the round rod 802, and the bottom end of the round rod 802 is connected to the self-driving wheel 804. The driven mechanism can also realize the height adjustment function. There is an electric push rod 806 and a lower support plate 2 807 on the outer wall of the fixed sleeve 801. The lower support plate 807 is fixed at the bottom of the electric push rod 806, and the upper support plate The second 805 is fixed on the outer wall of the telescopic rod 803, and the output end of the electric push rod 806 is fixedly connected to the bottom of the upper support plate. The electric push rod 806 can drive the telescopic rod to lift and slide in the fixed sleeve, and the pressing height The adjustment button 306, the first electric push rod 303 and the second electric push rod 806, extend or contract synchronously to realize the height adjustment of the device.

In a preferred embodiment, multiple sets of atomizing nozzles 9 are provided on the side wall of the spraying vertical rod 4, and each group of atomizing nozzles 9 is distributed crosswise on the spraying vertical rod 4. When the device enters the corn field, the liquid fertilizer stored in the liquid storage device 5 will be pumped into the spray vertical rod 4 under the action of the micro water pump 504, and the liquid fertilizer will be atomized and sprayed out under the action of high pressure and atomizing nozzle 9. The distribution of atomizing nozzles 9 on the spray vertical rod 4 is shown in Figure 8.

The operation in the corn field is shown in Figure 9. When the spraying vertical rod 4 is about to enter the corn field, the relative position of the spraying vertical rod 4 and the outermost corn in the corn field is as shown in the spraying vertical rod 4C, with its left front There are two corn plants in front and right front. At this time, the liquid fertilizer sprayed by the atomizing nozzle 9 located in the right front of the spraying vertical rod 4 is sprayed on the left rear side of the corn, and the liquid fertilizer sprayed by the atomizing nozzle 9 located in the left front of the spraying vertical rod 4 is just right. Spray on the right back side of the corn. As the spraying vertical rod 4 moves forward, the relative position of the spraying vertical rod 4 and the corn is as shown in the spraying vertical rod 4B. At this time, the atomizing nozzle 9 located at the right rear of the spraying vertical rod 4 sprays The liquid fertilizer is sprayed just on the left front side of the corn, and the liquid fertilizer sprayed out by the atomizing nozzle 9 located at the left rear of the spraying vertical rod 4 is just sprayed on the right front side of the corn. Thus, with the operation of the entire device, each surface of a row of corn between the two spraying vertical rods 4 can be sprayed. After the device completes corn spraying in a certain area, it can automatically turn and translate a fixed distance at the end of the corn field to spray corn in the next area.

In a preferred embodiment, the liquid storage device 5 also includes a sensor 505. The sensor 505 is installed on the side walls of the rotating shaft 1 and the rotating shaft 2 2 and the side wall of the telescopic rod 302. The sensor 505 is connected with the electric drive wheel 702 and the self-driven The wheel 804 is electrically connected, and the sensor 505 can prevent the device from hitting the corn stalks during advancement due to inappropriate height.

Example 1

When adding water and fertilizer to the liquid storage device 5, the farmer can press the height adjustment button 306, which causes the first electric push rod 303 and the second electric push rod 806 to shrink and adjust the entire device to the shortest position. At this time, from the ground to the fixed The height of the sleeve 301 is 1.4 meters, and the height of the short liquid storage rod 502 is 0.15 meters. When the height of the entire device is the lowest, the height of the infusion hole from the ground is 1.55 meters. This height is convenient for farmers to add water and fertilizer. In addition, the infusion hole can be connected to a hose to facilitate remote replenishment of water and fertilizer to the installation.

Example 2

During the process of spraying corn plants, farmers set the height of the device in advance before entering the corn field, and adjust the spacing between the spraying vertical poles 4 in the device through the rotating shafts 1 and 2 to adapt to the spacing between corns. When the device enters the corn field, through the cooperation between the triangular frame 701 driven by the battery 703 and the self-driving wheel 804, automatic operation can be realized during the implementation process, thereby improving the fertilization efficiency. The triangular wheel frame 701 with high stability is combined with three self-driving wheels 804 with a front and rear staggered design, which can ensure the stability of the device during the implementation. When the device is moving forward, if more than one sensor 505 detects a corn stalk obstacle in front of the device, in order to prevent excessively high corn stalks from being broken due to device driving due to manual height adjustment errors, the sensor 505 will detect an abnormality after It will control the entire device to stop and sound an alarm. Under normal operation of the device, the battery 703 drives the electric driving wheel 702 and the self-driving wheel 804 under the tripod 701 to move forward. When the device enters the corn field, the liquid fertilizer stored in the liquid storage device 5 will be pumped into the spray vertical rod 4 under the action of the micro water pump 504, and the liquid fertilizer will be atomized and sprayed out under the action of high pressure and atomizing nozzle 9. After the device completes its work, the farmer can fold the entire device by adjusting the rotating shafts 1 and 2, and use the height adjustment mechanism 3 to lower the device to the lowest height. The device does not need to be disassembled. Driven by the driving mechanism 7, the device can be folded. The device can be moved home and placed at home. It is simple to store and easy to use.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For relevant details, please refer to the description in the method section.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A liquid fertilizer spraying device for corn foliar topdressing, comprising: the liquid storage device, the moving device and the spraying hanging rod; the mobile device is installed the bottom of holding the liquid device, hold the liquid device and hold liquid pole, short hold liquid pole, pivot one and pivot two including long hold liquid pole, a plurality of long hold liquid pole is passed through pivot two are articulated, a pair of short hold liquid pole is passed through pivot one with the long hold liquid pole at both ends is articulated, long hold liquid pole with short hold liquid pole intercommunication, a plurality of the spraying perpendicular pole is installed long hold liquid pole with the bottom of short hold liquid pole.

2. The liquid fertilizer spraying device for corn foliar top dressing according to claim 1, wherein the moving device comprises a height adjusting mechanism, a vertical rod, a driving mechanism and a driven mechanism, wherein the vertical rod is arranged at the top end of the driving mechanism, the height adjusting mechanism is arranged at the top end of the vertical rod, the top end of the height adjusting mechanism is fixedly connected with the end part of the short liquid storage rod, and the driven mechanism is arranged at the bottom end of the second rotating shaft.

3. The liquid fertilizer spraying device for corn foliar dressing according to claim 2, wherein the driving mechanism includes a cam frame, an electric driving wheel and a storage battery, the cam frame is mounted at the bottom end of the vertical rod, the electric driving wheel is mounted at the bottom end of the cam frame, the storage battery is mounted on the cam frame, and the electric driving wheel and the storage battery are electrically connected.

4. The liquid fertilizer spraying device for corn foliar application according to claim 3, wherein the height adjusting mechanism includes a fixing sleeve first, a telescopic rod first, an electric push rod first, a lower support plate first, an upper support plate first and a height adjusting button, the fixing sleeve first is mounted at the top end of the vertical rod, the telescopic rod first is slidably connected within the fixing sleeve first, the top end of the telescopic rod first is fixedly connected with the end of the short liquid storage rod, the upper support plate first is mounted on the side wall of the telescopic rod first, the lower support plate first is mounted on the side wall of the fixing sleeve first, the bottom end of the electric push rod first is connected with the lower support plate first, the top end of the electric push rod first is connected with the upper support plate first, and the height adjusting button is mounted on the triangular wheel frame and is electrically connected with the electric push rod first.

5. The liquid fertilizer spraying device for corn leaf surface dressing according to claim 4, wherein the driven mechanism comprises a second fixed sleeve, a round rod, a second telescopic rod, a self-driven wheel, a second upper supporting plate, a second electric push rod and a second lower supporting plate; the self-driving wheel is arranged at the bottom end of the round rod, the second fixing sleeve is arranged at the top end of the round rod, the second telescopic rod is connected in the second fixing sleeve in a sliding mode, the top end of the second telescopic rod is connected with the bottom end of the rotating shaft, the second upper supporting plate is arranged on the side wall of the second telescopic rod, the second lower supporting plate is arranged on the side wall of the second fixing sleeve, the top end of the second electric push rod is connected with the upper supporting plate, the bottom end of the second electric push rod is connected with the lower supporting plate, the second electric push rod is electrically connected with the height adjusting button, and the self-driving wheel is electrically connected with the storage battery.

6. The liquid fertilizer spraying device for corn foliar top dressing according to claim 1, wherein a plurality of groups of atomizing nozzles are arranged on the side wall of the spraying hanging rod, and each group of atomizing nozzles is distributed in a cross shape on the spraying hanging rod.

7. The liquid fertilizer placement device for corn foliar application of claim 5 wherein the reservoir further includes sensors mounted on the side walls of the first and second shafts and on the side wall of the first telescoping rod, the sensors being electrically connected to the electric drive wheel and the self-driven wheel.