Adjustable contouring fairing for orchard contouring spraying device

Abstract

The utility model discloses an adjustable profiling fairing of orchard profiling spraying device, including rear baffle and front fairing, and the rear baffle lower part is equipped with the first air inlet, and the rear baffle and the lower end of front fairing are closed through the lower baffle, the front fairing includes the trapezoidal tree -like front side cover of narrow upper and wide lower and the left guide plate, right guide plate and upper guide plate parallel with rear baffle, and the left guide plate, right guide plate and upper guide plate are arranged respectively in the left side, right side and upside of front side cover, and the left guide plate, right guide plate and upper guide plate form the air supply channel with rear baffle, and the upper guide plate is equipped with the left angle adjusting baffle and right angle adjusting baffle of adjustable and horizontal plane included angle between rear baffle, and the air supply channel between the lower part of left guide plate and right guide plate and rear baffle is equipped with left height adjusting plate and right height adjusting plate respectively. Have the advantages such as low pesticide utilization rate improvement, saving pesticide.

Description

Technical Field

[0001] This utility model relates to the field of orchard pesticide spraying devices, and in particular to an adjustable contour guide hood for an orchard contour spraying device. Background Technology

[0002] Orchard contour spraying devices are agricultural machines that spray pesticides according to the shape of fruit tree canopies, improving pesticide utilization and reducing pesticide waste. A utility model patent filed by the applicant on March 27, 2017, with application number 2017203042804 and titled "A Wind-Powered Sprayer with Contour Spraying Device," discloses a contour spraying device. This device includes an air supply mechanism, a nozzle assembly, and a contour guide shroud. The contour guide shroud has a trapezoidal tree-like structure, narrow at the top and wide at the bottom. It is formed by parallel front baffles and a rear guide shroud connected by transverse connecting columns. A guide cavity is formed between the front baffle and the rear guide shroud. The upper and lower ends of the guide cavity are closed by baffles, while the left and right sides of the guide cavity are open to form air ducts. The rear guide shroud slopes forward from bottom to top, and a first ventilation opening matching the shape of the air outlet of the fan shroud is provided in the lower middle part of the front baffle. This contour-following sprayer's contour-guided hood provides airflow to both sides, directing the atomized pesticide sprayed from the nozzles towards the tree canopy. However, during use, it was found that differences in fruit tree variety, age, and soil type result in significant variations in the initial height and shape of the tree canopy. The existing contour-following sprayer's contour-guided hood cannot adjust the initial airflow height and airflow distribution according to these differences, leading to low pesticide utilization. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable contour guide hood for an orchard contour spraying device that can adjust the starting height and air volume distribution of the air supply according to the different starting heights and shapes of the fruit tree canopies in different orchards.

[0004] The technical solution adopted by this utility model to overcome the shortcomings of the prior art is:

[0005] An adjustable contour-following hood for an orchard contour-following spray device includes a rear baffle and a front hood, which are connected by a connecting column. A guide cavity is formed between the rear baffle and the front hood. A first air inlet is provided at the lower part of the rear baffle. The lower ends of the rear baffle and the front hood are closed by a lower baffle. The front hood includes a trapezoidal, tree-like front cover that is narrower at the top and wider at the bottom, and a left guide plate, a right guide plate, and an upper guide plate parallel to the rear baffle. The left, right, and upper guide plates are respectively located on the left, right, and upper sides of the front cover. An air delivery channel is formed between the left, right, and upper guide plates and the rear baffle. The device is characterized in that an adjustable left angle baffle and a right angle baffle are provided between the upper guide plate and the rear baffle, with adjustable angles relative to the horizontal plane. A left height adjustment plate and a right height adjustment plate are respectively provided at the air delivery channel between the lower part of the left guide plate and the lower part of the right guide plate and the rear baffle.

[0006] This invention is further improved by providing a middle baffle in the guide cavity on the front side of the first air inlet. The middle baffle is located in the middle of the guide cavity in the front-rear direction and is parallel to the rear baffle. The height of the middle baffle is higher than the height of the first air inlet. An arched second air inlet is provided on the middle baffle, and the height of the second air inlet is less than the height of the first air inlet. The airflow entering from the first air inlet is divided into two parts at the middle baffle. One part continues forward from the second air inlet into the guide cavity between the middle baffle and the front guide hood, flows upward, and then flows out through the air supply channel, providing airflow to the upper part of the fruit tree. The other part is blocked and guided by the middle baffle and flows directly out through the air supply channels on the left and right sides of the middle baffle, providing airflow to the lower part of the fruit tree.

[0007] The left and right sides of the middle baffle described in this utility model are close to or abut against the left guide plate and the right guide plate, the left height adjustment plate and the right height adjustment plate are respectively arranged on the left and right sides of the middle baffle, and the rear sides of the left height adjustment plate and the right height adjustment plate are close to or abut against the rear windshield.

[0008] The second air inlet of this invention has an air inlet guide plate that slopes inward from front to back on the middle baffle plate at its edge. The direction away from the air supply channel is inward, and the direction closer to the air supply channel is outward.

[0009] The left and right angle adjusting baffles described in this utility model are rectangular plates. A left mounting sleeve is provided on the rear right side of the left angle adjusting baffle, and a right mounting sleeve is provided on the front left side of the right angle adjusting baffle. A rotating shaft sliding hole is provided on the rear windshield plate, and an adjusting nut is fixed on the rear windshield plate behind the rotating shaft sliding hole. A clamping locking hole is provided on the upper guide plate opposite to the adjusting nut. A clamping bolt is inserted into the clamping locking hole from front to back. The clamping bolt passes through the right and left mounting sleeves in sequence and is threadedly connected to the adjusting nut. A tension spring is provided on the clamping bolt between the right and left mounting sleeves. The bolt head at the front end of the clamping bolt presses against the front end of the right mounting sleeve, and a rotating handle is provided on the bolt head of the clamping bolt. When adjusting the tilt angles of the left and right angle adjustment baffles, turn the handle to rotate the clamping bolt in the opposite direction. The right mounting sleeve moves forward under the force of the tension spring. The left and right angle adjustment baffles can be manually rotated around the clamping bolt. Adjust the angles of the left and right angle adjustment baffles according to the height of the two adjacent rows of fruit trees in the orchard so that the wind can reach the treetops. Then turn the handle to rotate the clamping bolt in the forward direction. The bolt head presses the right mounting sleeve backward, locking the tilt angles of the left and right angle adjustment baffles. During the adjustment process, the tension spring always provides preload to the right and left mounting sleeves, ensuring that they do not rotate on their own due to their own weight when the left and right angle adjustment baffles can be manually rotated.

[0010] The left and right height adjusting plates of this utility model each include a fixed baffle and a sliding baffle. The fixed baffle is fixedly connected to the lower part of the middle baffle. The middle baffle above the fixed baffle has a rearwardly protruding connecting strip with an adjusting groove. The sliding baffle is located inside the fixed baffle and the connecting strip. A positioning screw is located at the upper end of the sliding baffle opposite to the adjusting groove. The positioning screw can slide freely up and down through the adjusting groove. A positioning nut is located on the positioning screw outside the connecting strip, and a rotating handle is located on the positioning nut. When the height of the sliding baffle needs to be adjusted, the positioning nut is rotated in the opposite direction to allow the sliding baffle to slide up and down. After adjusting the sliding baffle to the required height according to the height of the fruit tree trunk, the positioning nut is rotated in the forward direction to lock the sliding baffle inside the connecting strip.

[0011] This utility model is further improved by providing an airflow adjustment baffle in the middle of the rear windshield. The airflow adjustment baffle includes a rectangular left airflow adjustment plate and a right airflow adjustment plate. A left adjustment sliding hole is provided on the rear windshield, and a left adjustment rod that can rotate freely and slide back and forth is provided within the left adjustment sliding hole. The right end of the left airflow adjustment plate is connected to the left adjustment rod on the front side of the rear windshield. An angle adjustment handle is provided on the left adjustment rod on the rear side of the rear windshield, and a locking protrusion is provided on the side of the angle adjustment handle opposite to the rear windshield. The wind deflector has a series of arc-shaped locking holes that mate with the locking bosses. The rear wind deflector to the right of the left adjusting slide hole has a right adjusting slide hole, and a right adjusting rod that can rotate and slide back and forth is provided in the right adjusting slide hole. The left end of the right airflow adjusting plate is connected to the right adjusting rod on the front side of the rear wind deflector. An angle adjusting handle is provided on the right adjusting rod on the rear side of the rear wind deflector. A locking boss is provided on the side of the angle adjusting handle opposite to the rear wind deflector. The rear wind deflector has a series of arc-shaped locking holes that mate with the locking bosses. When adjusting the tilt angle of the left and right airflow regulating plates, pull the angle adjustment handle backward to slide the locking boss backward out of the locking hole. Rotate the angle adjustment handle to adjust the left and right airflow regulating plates to the desired angle, then push the angle adjustment handle forward to slide the locking boss into the corresponding locking hole. The angle adjustment handle can be connected to the left and right adjusting rods via a keyway, allowing for a small range of forward and backward movement. Alternatively, a sliding gap can be left between the left and right airflow regulating plates and the rear baffle. By adjusting the angle of the left and right airflow regulating plates, the mutual flow of air between the two portions of air divided by the middle baffle can be controlled. It can also be coordinated with the height of the left and right height adjusting plates to meet the airflow requirements at different heights during pesticide spraying.

[0012] This invention is further improved by providing connecting tubes on the front diffuser opposite to the left and right adjusting rods. The front ends of the left and right adjusting rods are inserted into their corresponding connecting tubes, resulting in higher stability. The left and right adjusting rods are made of stainless steel that can be attracted by a magnet, and magnets are installed inside the connecting tubes. The magnets attract the front ends of the left and right adjusting rods, preventing the locking boss from uncontrollably sliding backward out of the locking hole during use.

[0013] In use, the blower's outlet is directly connected to the first inlet. By adjusting the angles of the left and right angle adjustment baffles with the horizontal plane, the air delivery angle can be adjusted, ensuring that the airflow from the air delivery channel between the upper guide plate and the rear baffle reaches the treetop. By adjusting the heights of the left and right height adjustment plates, the airflow from the air delivery channel between the lower parts of the left and right guide plates and the rear baffle starts from the leafy canopy, adapting to fruit trees of different trunk heights. The starting height for spraying airflow can be adjusted according to the initial canopy height of fruit trees in different orchards, resulting in high pesticide utilization and pesticide savings. Adjusting the angle of the airflow adjustment baffles controls the flow direction and fusion of the upper and lower airflows, thereby controlling the airflow volume to different heights of the fruit trees to meet the needs of different tree conditions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0016] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure.

[0017] Figure 4 yes Figure 3 A magnified view of a portion of point D.

[0018] Figure 5 yes Figure 2 Schematic diagram of the BB cross-section structure.

[0019] Figure 6 yes Figure 5 A magnified view of a portion of point C.

[0020] Figure 7 This is a schematic diagram of the structure of the middle baffle in this utility model.

[0021] Figure 8 yes Figure 7 A magnified view of a portion at point E. Detailed Implementation

[0022] like Figures 1-8The adjustable contour-following hood of the orchard contour-following spray device shown includes a rear baffle 4 and a front hood, which are connected by a connecting column. A guide cavity is formed between the rear baffle 4 and the front hood. A circular first air inlet 4-1 is provided at the lower part of the rear baffle 4. The diameter (height) of the first air inlet 4-1 is less than 0.4 times the height of the rear baffle. The lower ends of the rear baffle 4 and the front hood are closed by a lower baffle 9. The front hood includes a... The front cover 6, which is trapezoidal and tree-like in shape with a narrow top and a wide bottom, and the left guide plate 5, right guide plate 1, and upper guide plate 3, which are parallel to the rear windshield 4, are arranged in a dome shape with the middle part raised forward. The left guide plate 5, right guide plate 1, and upper guide plate 3 are respectively located on the left, right, and upper sides of the front cover 6. The left guide plate 5, right guide plate 1, and upper guide plate 3 form air supply channels with the rear windshield 4 to the left, right, and upper sides. The above structure is the same as the prior art and will not be described again. The feature of this utility model is that: the upper guide plate 3 and the rear windshield 4 are provided with an adjustable left angle adjustment baffle 13 and a right angle adjustment baffle 18 with adjustable angles to the horizontal plane. The lower part of the left guide plate 5 and the lower part of the right guide plate 1 are respectively provided with a left height adjustment plate and a right height adjustment plate at the air supply channel between them and the rear windshield. The left angle adjusting baffle 13 and the right angle adjusting baffle 18 are rectangular plates. The left angle adjusting baffle 13 has a left mounting sleeve 19 on the rear right end, and the right angle adjusting baffle 18 has a right mounting sleeve 22 on the front left end. The rear windshield 4 has a rotating shaft sliding hole. An adjusting nut 10 is fixed on the rear windshield 4 behind the rotating shaft sliding hole. The upper guide plate 3 opposite to the adjusting nut 10 has a clamping locking hole. A clamping bolt 23 is inserted from front to back in the clamping locking hole. The clamping bolt 23 passes through the right mounting sleeve 22 and the left mounting sleeve 19 in sequence and is threaded to the adjusting nut 10. A tensioning spring 21 is provided on the clamping bolt 23 between the right mounting sleeve 22 and the left mounting sleeve 19. The tensioning spring 21 is a butterfly spring with a small stroke and large elasticity, which can provide greater friction and make it easier to lock. The rear side of the bolt head at the front end of the clamping bolt 23 presses against the front end of the right mounting sleeve 22, and the bolt head of the clamping bolt 23 is provided with a rotating handle 2.When it is necessary to adjust the tilt angle of the left angle adjusting baffle 13 and the right angle adjusting baffle 18, turn the rotating handle 2 to drive the clamping bolt 23 to rotate in the opposite direction. The right mounting sleeve moves forward under the elastic force of the tension spring. The left and right angle adjusting baffles can be rotated around the clamping bolt by hand. Adjust the angle of the left and right angle adjusting baffles according to the height of the two adjacent rows of fruit trees in the orchard so that the wind can blow to the top of the fruit trees. Then turn the rotating handle to drive the clamping bolt to rotate in the forward direction. The bolt head presses the right mounting sleeve backward, locking the tilt angle of the left and right angle adjusting baffles. During the adjustment process, the tension spring always provides preload force to the right and left mounting sleeves, ensuring that they do not rotate on their own due to their own weight when the left and right angle adjusting baffles can be manually turned.

[0023] This embodiment is further improved by providing an intermediate baffle 12 in the guide cavity on the front side of the first air inlet 4-1. The intermediate baffle 12 is located in the middle of the guide cavity in the front-rear direction and is parallel to the rear baffle. The bottom of the intermediate baffle 12 is connected to the lower baffle, and the upper part can be connected to the rear baffle 4 and the front guide shroud via a connecting column, resulting in higher stability. The height of the intermediate baffle is higher than the height of the first air inlet and is 0.5 times the height of the rear baffle. An arched second air inlet 25 is provided on the intermediate baffle 12, and the height of the second air inlet 25 is 0.75 times the height of the first air inlet 4-1. The airflow entering through the first air inlet 4-1 is divided into two parts at the middle baffle. One part continues forward through the second air inlet 25 into the guide cavity between the middle baffle and the front guide hood, flows upward, and then flows out through the air supply channel to supply air to the upper part of the fruit tree. The other part is blocked and guided by the middle baffle 12 and flows out directly through the air supply channels on the left and right sides of the middle baffle to supply air to the lower part of the fruit tree. In this embodiment, the left height adjustment plate and the right height adjustment plate respectively include a fixed baffle 27 and a sliding baffle 26. The fixed baffle 27 is arranged in the front-back direction and is fixedly connected to the lower part of the middle baffle 12. The middle baffle 21 above the fixed baffle 27 is provided with a connecting baffle 28 that protrudes backward and is arranged in the up-down direction. The connecting baffle 28 is provided with an adjusting groove 30 that is arranged in the up-down direction and runs through the inside and outside. The sliding baffle 26 is arranged inside the fixed baffle 27 and the connecting baffle 28. The upper end of the sliding baffle 26 is provided with a positioning screw opposite to the adjusting groove 30. The positioning screw can slide freely up and down through the adjusting groove 30. The positioning screw on the outside of the connecting baffle 28 is provided with a positioning nut 29, and the positioning nut 29 is provided with a rotating handle. When the height of the sliding baffle needs to be adjusted, turn the positioning nut in the opposite direction to allow the sliding baffle to slide up and down. After adjusting the sliding baffle to the required height according to the height of the main trunk of the fruit tree (the part that does not need to be sprayed with pesticides), turn the positioning nut in the forward direction to lock the sliding baffle inside the connecting strip.

[0024] In this embodiment, the left and right sides of the intermediate baffle are close to the left and right guide plates, respectively. The left and right height adjustment plates are respectively disposed on the left and right sides of the intermediate baffle, and the rear sides of the left and right height adjustment plates are close to the rear windshield. The intermediate baffle 12 at the edge of the second air inlet 25 is provided with an air inlet guide plate 8 that slopes inward from front to back. The direction away from the air supply channel is inward, and the direction close to the air supply channel is outward.

[0025] This embodiment is further improved by providing an airflow adjustment baffle in the middle of the rear windshield 4 above the intermediate baffle 12. The airflow adjustment baffle includes a rectangular left airflow adjustment plate 15 and a right airflow adjustment plate. The rear windshield 4 has a left adjustment sliding hole, and a left adjustment rod 24 that can rotate freely and slide back and forth is provided in the left adjustment sliding hole. The right end of the left airflow adjustment plate 15 is connected to the left adjustment rod 24 on the front side of the rear windshield 4. An angle adjustment handle 11 is provided on the left adjustment rod 24 on the rear side of the rear windshield 4. A cylindrical locking mechanism is provided on the angle adjustment handle 11 on the side opposite to the rear windshield. The rear windshield has a boss 14 and a locking hole 7 arranged in an arc around the left adjusting rod 24 to cooperate with the locking boss 14. The rear windshield to the right of the left adjusting sliding hole has a right adjusting sliding hole, and a right adjusting rod that can rotate freely and slide back and forth is provided in the right adjusting sliding hole. The left end of the right air volume adjusting plate is connected to the right adjusting rod on the front side of the rear windshield. An angle adjusting handle is provided on the right adjusting rod on the rear side of the rear windshield. A cylindrical locking boss is provided on the angle adjusting handle on the side opposite to the rear windshield. The rear windshield has locking holes arranged in an arc around the right adjusting rod to cooperate with the locking boss. When adjusting the tilt angle of the left and right airflow regulating plates, pull the angle adjustment handle backward to slide the locking boss backward out of the locking hole. Rotate the angle adjustment handle to adjust the left and right airflow regulating plates to the desired angle, then push the angle adjustment handle forward to slide the locking boss into the corresponding locking hole. The angle adjustment handle can be connected to the left and right adjusting rods via a keyway, allowing for a small range of forward and backward movement. Alternatively, a sliding gap can be left between the left and right airflow regulating plates and the rear baffle. By adjusting the angle of the left and right airflow regulating plates, the mutual flow of air between the two portions of air divided by the middle baffle can be controlled. It can also be coordinated with the height of the left and right height adjusting plates to meet the airflow requirements at different heights during pesticide spraying.

[0026] This invention is further improved by providing connecting tubes 17 on the front diffuser 6 at positions opposite to the left and right adjusting rods 24 and 24, respectively. The front ends of the left and right adjusting rods are inserted into their corresponding connecting tubes 17, resulting in higher stability. The left and right adjusting rods are made of stainless steel that can be attracted by magnets, and magnets 16 are provided inside the connecting tubes. Magnets 16 attract the front ends of the left and right adjusting rods, preventing the locking boss from uncontrollably sliding backward out of the locking hole during use.

[0027] In use, the blower's outlet is directly connected to the first inlet. By adjusting the angles of the left and right angle adjustment baffles with the horizontal plane, the air delivery angle can be adjusted, ensuring that the airflow from the air delivery channel between the upper guide plate and the rear baffle reaches the treetop. By adjusting the heights of the left and right height adjustment plates, the airflow from the air delivery channel between the lower parts of the left and right guide plates and the rear baffle starts from the leafy canopy, adapting to fruit trees of different trunk heights. The starting height for spraying airflow can be adjusted according to the initial canopy height of fruit trees in different orchards, resulting in high pesticide utilization and pesticide savings. Adjusting the angle of the airflow adjustment baffles controls the flow direction and fusion of the upper and lower airflows, thereby controlling the airflow volume to different heights of the fruit trees to meet the needs of different tree conditions.

Claims

1. An adjustable contour-following hood for an orchard contour-following spray device, comprising a rear baffle and a front hood, the rear baffle and the front hood being connected by a connecting column, forming a guide cavity between the rear baffle and the front hood, a first air inlet being provided at the lower part of the rear baffle, and the lower ends of the rear baffle and the front hood being closed by a lower baffle, wherein the front hood comprises a trapezoidal tree-shaped front cover that is narrower at the top and wider at the bottom, and a left guide plate, a right guide plate, and an upper guide plate parallel to the rear baffle, the left guide plate, the right guide plate, and the upper guide plate being respectively disposed on the left, right, and upper sides of the front cover, and forming an air delivery channel between the left guide plate, the right guide plate, and the upper guide plate and the rear baffle, characterized in that, The upper guide plate and the rear windshield are provided with an adjustable left angle adjustment baffle and a right angle adjustment baffle that are adjustable to the horizontal plane. The lower part of the left guide plate and the lower part of the right guide plate are respectively provided with a left height adjustment plate and a right height adjustment plate at the air supply channel between the rear windshield and the air supply channel.

2. The adjustable contour guide hood of the orchard contour spraying device according to claim 1, characterized in that, A middle baffle is provided in the flow guide cavity in front of the first air inlet. The middle baffle is located in the middle of the flow guide cavity in the front-back direction and is parallel to the rear baffle. The height of the middle baffle is higher than the height of the first air inlet. An arched second air inlet is provided on the middle baffle. The height of the second air inlet is less than the height of the first air inlet.

3. The adjustable contour guide hood of the orchard contour spraying device according to claim 2, characterized in that, The left and right sides of the middle baffle are close to or abut against the left guide plate and the right guide plate, the left height adjustment plate and the right height adjustment plate are respectively set on the left and right sides of the middle baffle, and the rear sides of the left height adjustment plate and the right height adjustment plate are close to or abut against the rear windshield.

4. The adjustable contour guide hood of the orchard contour spraying device according to claim 2 or 3, characterized in that, The left and right angle adjustment baffles are rectangular plates. The left angle adjustment baffle has a left mounting sleeve on the rear right side and the right angle adjustment baffle has a right mounting sleeve on the front left side. The rear windshield has a rotating shaft sliding hole. An adjustment nut is fixed on the rear windshield behind the rotating shaft sliding hole. A clamping locking hole is provided on the upper guide plate opposite to the adjustment nut. A clamping bolt is inserted from front to back in the clamping locking hole. The clamping bolt passes through the right and left mounting sleeves in sequence and is threaded to the adjustment nut. A tension spring is provided on the clamping bolt between the right and left mounting sleeves.

5. The adjustable contour guide hood of the orchard contour spraying device according to claim 4, characterized in that, The left and right height adjustment plates each include a fixed baffle and a sliding baffle. The fixed baffle is fixedly connected to the lower part of the middle baffle. The middle baffle above the fixed baffle is provided with a rearward protruding connecting strip. The connecting strip is provided with an adjustment groove. The sliding baffle is located inside the fixed baffle and the connecting strip. The upper end of the sliding baffle is provided with a positioning screw opposite to the adjustment groove. The positioning screw can slide freely up and down through the adjustment groove. The positioning screw outside the connecting strip is provided with a positioning nut. The positioning nut is provided with a rotating handle.

6. The adjustable contour guide hood of the orchard contour spraying device according to claim 5, characterized in that, The rear windshield has an airflow adjustment baffle in the middle, comprising a rectangular left airflow adjustment plate and a right airflow adjustment plate. A left adjustment slide hole is provided on the rear windshield, within which a left adjustment rod that can rotate freely and slide back and forth is installed. The right end of the left airflow adjustment plate is connected to the left adjustment rod on the front side of the rear windshield. An angle adjustment handle is provided on the left adjustment rod on the rear side of the rear windshield, and a locking boss is provided on the side of the angle adjustment handle opposite to the rear windshield. The rear windshield also has... There are locking holes arranged in an arc shape to cooperate with the locking boss; a right adjustment slide hole is provided on the rear windshield plate to the right of the left adjustment slide hole, and a right adjustment rod that can rotate freely and slide back and forth is provided in the right adjustment slide hole. The left end of the right air volume adjustment plate is connected to the right adjustment rod on the front side of the rear windshield. An angle adjustment handle is provided on the right adjustment rod on the rear side of the rear windshield. A locking boss is provided on the side of the angle adjustment handle opposite to the rear windshield. Locking holes arranged in an arc shape to cooperate with the locking boss are provided on the rear windshield plate.

7. The adjustable contour guide hood of the orchard contour spraying device according to claim 6, characterized in that, The front fairing is provided with connecting tubes at the positions opposite to the left and right adjusting rods. The front ends of the left and right adjusting rods are respectively inserted into the corresponding connecting tubes. The left and right adjusting rods are made of stainless steel that can be attracted by a magnet, and a magnet is provided inside the connecting tube.

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