Automatic onion planting equipment

Abstract

The invention relates to the technical field of agricultural planting, in particular to automatic onion planting equipment. Comprising a machine frame, driving wheels and a control box, the driving wheels are symmetrically and rotationally arranged on the machine frame, the control box is installed on the machine frame, a hole opening mechanism and a bulldozing mechanism are arranged on the machine frame, the hole opening mechanism is used for opening holes in soil, the bulldozing mechanism is used for covering the roots of onion seedlings with the soil, and a first electric sliding table is arranged on the machine frame. By arranging a structure of combining the clamping plate, the fixing plate, the spring and the first distance sensor, the onion seedling stem size can be detected in real time in the seedling taking process, whether onion seedlings are qualified or not can be automatically judged according to a preset standard, too large or too small unqualified seedlings are effectively removed, only high-quality seedlings meeting requirements are planted, and the planting efficiency is improved. The problems of bolting, flowering, seedling death and the like caused by inconsistent plant growth are avoided, so that the survival rate and the final yield are improved, a basis is provided for unified field management, and the management difficulty of later water, fertilizer, pest and disease damage and the like is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural planting, and particularly to an automated onion planting device. Background Art

[0002] With the acceleration of the process of agricultural modernization, onion planting has gradually developed from traditional manual operations to mechanization and automation. As one of the important vegetables widely planted globally, onions have a large market demand and pose higher requirements for large-scale production. However, in the current onion planting process, although some automated planting devices have been put into use, there are still technical bottlenecks in key links, especially in the adaptability of seedling screening and planting.

[0003] Currently, the automated onion planting devices on the market mainly rely on transplanting machinery to take out onion seedlings from the seedling trays one by one and plant them into the soil. The working principle of this kind of device is usually to extract the seedlings in the seedling trays sequentially through a robotic arm or a pneumatic suction device and plant them according to the set spacing and depth. This method reduces the labor cost to a certain extent, but there are still obvious limitations: the existing devices cannot automatically identify and screen onion seedlings according to their stem diameters when taking seedlings, resulting in all seedlings being uniformly processed regardless of their size. If the onion seedlings are too large (such as the stem diameter exceeding the standard value), they often enter the reproductive growth stage, and are prone to premature bolting and flowering after planting, which will consume a large amount of plant nutrients, affect the swelling of the underground bulbs, and thus reduce the yield and quality. If the onion seedlings are too small (such as the stem diameter below the standard value), due to their underdeveloped physiological functions, weak vitality, and poor stress resistance, they are extremely likely to die after planting, resulting in missing seedlings and ridges, directly affecting the unit area yield. Moreover, due to the uneven seedlings planted, there are significant differences in the field growth state, which brings many inconveniences to water and fertilizer management, pest and disease control, and harvesting operations, increasing the management cost and labor input. Summary of the Invention

[0004] In view of this, the present invention provides an automated onion planting device, which can solve the problems that the existing automated onion planting devices cannot automatically identify and screen onion seedlings according to their stem diameters when taking seedlings, resulting in all seedlings being uniformly processed regardless of their size, and due to the uneven seedlings planted, the subsequent management cost and labor input are increased.

[0005] The technical implementation solution of the present invention is: an onion automatic planting device, including a machine frame, driving wheels and a control box. Driving wheels are symmetrically and rotatably arranged on the machine frame, and a control box is installed on the machine frame. An opening mechanism and a soil pushing mechanism are arranged on the machine frame. The opening mechanism is used to open holes in the soil, and the soil pushing mechanism is used to cover the soil on the roots of onion seedlings. A first electric sliding table is arranged on the machine frame, and an adjusting mechanism is arranged on the machine frame. A first linear driver is connected to the adjusting mechanism. The adjusting mechanism is used to adjust the height and orientation of the first linear driver. A positioning mechanism is arranged on the first linear driver. The positioning mechanism is used to detect the displacement of the telescopic rod of the first linear driver. A guide rail frame is connected to the telescopic rod of the first linear driver, and a fixing plate is connected to the guide rail frame. A clamping plate is slidably arranged on the guide rail frame. A spring is connected between the fixing plate and the clamping plate. A first distance sensor is installed on the fixing plate. The first distance sensor is used to detect the distance between the fixing plate and the clamping plate. A contact sensor for contacting the onion seedlings is arranged on the guide rail frame. A second linear driver for pressing against the clamping plate is arranged on the guide rail frame. A feeding pipe and a receiving hopper are arranged on the machine frame. A collecting mechanism for collecting onion seedlings with unqualified stem thickness is arranged on the machine frame.

[0006] In a preferred embodiment of the present invention, the opening mechanism includes a lifting frame, a first electric push rod, a hollow tube and a hollow cone. The lifting frame is slidably arranged on the machine frame. The first electric push rod is installed on the lifting frame. A hollow tube is connected to the telescopic rod of the first electric push rod. A hollow cone is connected to the bottom of the hollow tube. The hollow cone is used to open holes in the soil.

[0007] In a preferred embodiment of the present invention, the soil pushing mechanism includes a second electric push rod, a connecting rod and a soil pushing plate. The second electric push rod is installed on the machine frame. The telescopic rod of the second electric push rod is connected to the lifting frame. Connecting rods are symmetrically arranged at the bottom of the lifting frame. A soil pushing plate is rotatably arranged on the connecting rod.

[0008] In a preferred embodiment of the present invention, the adjusting mechanism includes a third electric push rod, a movable frame and a motor. The third electric push rod is installed on the machine frame. The telescopic rod of the third electric push rod is connected to the movable frame. The motor is installed on the movable frame. The first linear driver is connected to the output shaft of the motor.

[0009] In a preferred embodiment of the present invention, the positioning mechanism includes a positioning plate and a second distance sensor. The positioning plate is connected to the telescopic rod of the first linear driver. The second distance sensor is arranged on the first linear driver. The second distance sensor is used to detect the distance from the positioning plate.

[0010] In a preferred embodiment of the present invention, the collecting mechanism includes a second electric sliding table and a collecting frame. The second electric sliding tables are symmetrically arranged on the machine frame. A collecting frame is arranged on the slide of the second electric sliding table. The collecting frame is used to collect onion seedlings with unqualified stem thickness.

[0011] In a preferred embodiment of the present invention, there is also a loosening mechanism, which includes an air pump, an air pipe, and a shielding cover. An air pump is installed on the frame. The air outlet of the air pump is connected to the hollow pipe through the air pipe. Through holes are spacedly arranged on the hollow cone, and a shielding cover is installed on the hollow pipe.

[0012] In a preferred embodiment of the present invention, there is also a limiting mechanism, which includes an electric slide rail and a pressing plate. An electric slide rail is installed on the frame, and a pressing plate is connected to the slider of the electric slide rail. The pressing plate is used to press the onion seedlings in the seedling tray for limiting.

[0013] The beneficial effects of the present invention are as follows: 1. By setting up a structure combining a clamping plate, a fixing plate, a spring, and a first distance sensor, the present invention can detect the stem thickness of onion seedlings in real time during the seedling picking process, and automatically judge whether they are qualified according to a preset standard, effectively removing unqualified seedlings that are too large or too small, and only planting high-quality seedlings that meet the requirements, avoiding problems such as bolting and flowering, and dead seedlings caused by inconsistent plant growth, thereby improving the survival rate and final yield, and also providing a basis for unified field management, reducing the management difficulty of later water and fertilizer, pests and diseases, etc.

[0014] 2. For the unqualified seedlings (such as those with too large or too small stem thickness) screened out by the present invention, the equipment can separately put them into different collection boxes through the rotating mechanism for classified recycling. This grading treatment method is beneficial to the subsequent reuse or centralized treatment of unqualified seedlings.

[0015] 3. The present invention is equipped with a loosening mechanism composed of a hollow cone, a hollow pipe, an air pump, and a shielding cover. After the hole opening is completed, the soil in the hole can be air-loosened to improve the planting microenvironment, which helps the onion seedling roots to quickly take root and grow. At the same time, the design of the shielding cover effectively prevents soil splashing during the loosening process and protects the already planted seedlings. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the lifting frame, the first electric push rod, and the second electric push rod of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the hollow pipe, the connecting rod, and the earth-pushing plate of the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the first electric slide table and the first linear driver of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the adjusting mechanism and the positioning mechanism of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the fixing plate, clamping plate and spring of the present invention.

[0022] Figure 7 This is a structural separation diagram of the guide rail frame, fixing plate and clamping plate of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the collection mechanism of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of the loosening mechanism of the present invention.

[0025] Figure 10 This is a three-dimensional structural schematic diagram of the hollow cone, through hole and shielding cover of the present invention.

[0026] Figure 11 This is a three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0027] Wherein: 1. Frame, 2. Driving wheel, 3. Control box, 401. Lifting frame, 402. First electric push rod, 403. Hollow tube, 404. Hollow cone, 501. Second electric push rod, 502. Connecting rod, 503. Earth-pushing plate, 6. First electric sliding table, 701. Third electric push rod, 702. Movable frame, 703. Motor, 8. First linear driver, 901. Positioning plate, 902. Second distance sensor, 10. Guide rail frame, 11. Fixing plate, 12. Clamping plate, 13. Spring, 14. First distance sensor, 15. Contact sensor, 16. Second linear driver, 17. Feeding pipe, 18. Receiving hopper, 1901. Second electric sliding table, 1902. Collection box, 20. Air pump, 21. Air pipe, 22. Through hole, 23. Shielding cover, 24. Electric slide rail, 25. Pressing plate. Specific embodiments

[0028] Embodiment: An automated onion planting device, see Figures 1-8 as shown, which includes a frame 1, driving wheels 2 and a control box 3; four driving wheels 2 are symmetrically and rotatably arranged on the frame 1 front and back; a control box 3 is installed on the left side of the frame 1, and the driving wheels 2 are electrically connected to the control box 3; It also includes a hole-opening mechanism, a soil-pushing mechanism, a first electric slide table 6, an adjusting mechanism, a first linear driver 8, a positioning mechanism, a guide rail frame 10, a fixing plate 11, a clamping plate 12, a spring 13, a first distance sensor 14, a contact sensor 15, a second linear driver 16, a blanking pipe 17, a receiving hopper 18 and a collecting mechanism; a hole-opening mechanism and a soil-pushing mechanism are arranged on the frame 1, the hole-opening mechanism is used for opening holes in the soil, and the soil-pushing mechanism is used for covering the soil on the roots of onion seedlings; a first electric slide table 6 is arranged on the left side of the top of the frame 1, the slide table of the first electric slide table 6 is used for placing a seedling tray, an L-shaped strip is arranged at the corner of the top of the slide table of the first electric slide table 6, and the L-shaped strip is used for limiting the seedling tray. The first electric slide table 6 is electrically connected to the control box 3; an adjusting mechanism is arranged on the frame 1, the adjusting mechanism is connected with a first linear driver 8, and the adjusting mechanism is used for adjusting the height and orientation of the first linear driver 8. The first linear driver 8 is electrically connected to the control box 3; a positioning mechanism is arranged on the first linear driver 8, and the positioning mechanism is used for detecting the displacement of the telescopic rod of the first linear driver 8; the telescopic rod of the first linear driver 8 is connected with a guide rail frame 10; a fixing plate 11 is connected to the front part of the upper side of the guide rail frame 10; a clamping plate 12 is slidably arranged at the rear part of the upper side of the guide rail frame 10; two springs 13 are connected between the fixing plate 11 and the clamping plate 12, and the clamping plate 12 is used for pressing the stem of the onion seedling on the fixing plate 11 by the elastic force of the spring 13 for fixation; a first distance sensor 14 is installed at the right part of the upper side of the fixing plate 11, and the first distance sensor 14 is used for detecting the distance between the fixing plate 11 and the clamping plate 12. The first distance sensor 14 is electrically connected to the control box 3; a contact sensor 15 for contacting the onion seedling is arranged on the guide rail frame 10, and the contact sensor 15 is electrically connected to the control box 3; a second linear driver 16 is arranged at the upper right part of the front side of the guide rail frame 10, the telescopic rod of the second linear driver 16 slidably penetrates through the fixing plate 11 and abuts against the clamping plate 12, and the second linear driver 16 is electrically connected to the control box 3; a blanking pipe 17 is arranged in the middle of the upper side of the frame 1, and the blanking pipe 17 is used for blanking onion seedlings with qualified stem thickness; receiving hoppers 18 are arranged on both the front and rear sides of the upper right part of the frame 1, and the receiving hoppers 18 are used for the onion seedlings with unqualified stem thickness to fall; a collecting mechanism for collecting onion seedlings with unqualified stem thickness is arranged on the frame 1.

[0029] See Figure 2 and Figure 3As shown in the figure, the hole-opening mechanism includes a lifting frame 401, a first electric push rod 402, a hollow tube 403, and a hollow cone 404; a lifting frame 401 is slidably arranged on the lower side of the frame 1; a first electric push rod 402 is installed on the left part of the lower side of the lifting frame 401, and the first electric push rod 402 is electrically connected to the control box 3; a hollow tube 403 is connected to the telescopic rod of the first electric push rod 402, and the inner side of the hollow tube 403 is a hollow structure; the bottom of the hollow tube 403 is connected to a hollow cone 404, the inner side of the hollow cone 404 is a hollow structure, and the hollow cone 404 is communicated with the hollow tube 403, and the hollow cone 404 is used for opening holes in the soil.

[0030] See Figure 2 and Figure 3 As shown in the figure, the earth-pushing mechanism includes a second electric push rod 501, a connecting rod 502, and an earth-pushing plate 503; second electric push rods 501 are installed on both the left and right sides of the lower part of the frame 1, the telescopic rods of the two second electric push rods 501 are both connected to the lifting frame 401, and the second electric push rod 501 is electrically connected to the control box 3; connecting rods 502 are symmetrically arranged before and after on the right side of the bottom of the lifting frame 401; an earth-pushing plate 503 is rotatably arranged on the connecting rod 502.

[0031] See Figure 4 and Figure 5 As shown in the figure, the adjusting mechanism includes a third electric push rod 701, a movable frame 702, and a motor 703; two third electric push rods 701 are installed on the right side of the top of the frame 1, the two third electric push rods 701 are distributed left and right, and the third electric push rod 701 is electrically connected to the control box 3; a movable frame 702 is connected between the telescopic rods of the two third electric push rods 701; a motor 703 is installed on the movable frame 702, the first linear actuator 8 is connected to the output shaft of the motor 703, and the motor 703 is electrically connected to the control box 3.

[0032] See Figure 5 As shown in the figure, the positioning mechanism includes a positioning plate 901 and a second distance sensor 902; a positioning plate 901 is connected to the telescopic rod of the first linear actuator 8; a second distance sensor 902 is arranged on the left side of the top of the first linear actuator 8, the second distance sensor 902 is used for detecting the distance from the positioning plate 901, and the second distance sensor 902 is electrically connected to the control box 3.

[0033] See Figure 8 As shown in the figure, the collecting mechanism includes a second electric slide 1901 and a collecting frame 1902; second electric slides 1901 are symmetrically arranged before and after on the right part of the lower side of the frame 1; a collecting frame 1902 is placed on the slide of the second electric slide 1901, and the two collecting frames 1902 are respectively located below the two receiving hoppers 18, and the collecting frame 1902 is used for collecting onion seedlings with unqualified stem thickness.

[0034] In the initial state, since the telescopic rod of the second linear driver 16 abuts against the clamping plate 12, the spring 13 is in a stretched state; During use, first, the control box 3 is used to control the slide of the first electric slide table 6 to move backward. Subsequently, the seedling tray is placed on the top of the slide of the first electric slide table 6, aligning the onion seedlings in the front row on the seedling tray with the contact sensor 15. Then, the control box 3 is used to control the driving wheel 2 to rotate, causing the driving wheel 2 to drive the planting device to move until the hollow cone 404 on the planting device is aligned with the position where planting is required. Next, the control box 3 is used to control the first electric push rod 402 to drive the hollow tube 403 and the hollow cone 404 to move downward, inserting the hollow cone 404 into the soil to create an opening in the soil. After the hollow cone 404 completes the opening in the soil, the control box 3 is used to control the first electric push rod 402 to drive the hollow tube 403 and the hollow cone 404 to move upward to reset. Then, the control box 3 is used to control the driving wheel 2 to rotate again, causing the driving wheel 2 to drive the planting device to move again until the feeding pipe 17 on the planting device is aligned with the hole in the soil. Then, the control box 3 is used to control the first linear actuator 8 to drive the positioning plate 901, the guide rail frame 10, and the contact sensor 15 to move leftward. At the same time, the control box 3 will control the second distance sensor 902 to detect the distance from the positioning plate 901. Then, it is divided into two situations: If the contact sensor 15 touches the onion seedlings on the seedling tray and the distance detected by the second distance sensor 902 from the positioning plate 901 does not reach the preset value, it means that there are still onion seedlings placed at the position on the seedling tray aligned with the contact sensor 15. After that, the contact sensor 15 will send a signal. After the control box 3 receives the signal, it will control the first linear actuator 8 to drive the positioning plate 901, the guide rail frame 10, and the contact sensor 15 to stop moving. At the same time, the control box 3 will control the second distance sensor 902 to stop detecting the distance from the positioning plate 901. If the distance detected by the second distance sensor 902 from the positioning plate 901 reaches the preset value and the contact sensor 15 does not touch the onion seedlings on the seedling tray, it means that there are no onion seedlings placed at the position on the seedling tray aligned with the contact sensor 15. After that, the second distance sensor 902 will send a signal. After the control box 3 receives the signal, it will control the first linear actuator 8 to drive the positioning plate 901, the guide rail frame 10, and the contact sensor 15 to move rightward to reset. Then, the control box 3 will control the first electric slide table 6 to drive the seedling tray to move forward until the onion seedlings in the next row on the seedling tray are aligned with the contact sensor 15. Then, the control box 3 will control the first linear actuator 8 to drive the positioning plate 901, the guide rail frame 10, and the contact sensor 15 to move leftward again, repeating the above operations until the contact sensor 15 touches the onion seedlings on the seedling tray;Next, the control box 3 will control the telescopic rod of the second linear driver 16 to shorten, so that the telescopic rod of the second linear driver 16 releases the clamping plate 12. At this time, under the elastic force of the spring 13, the spring 13 will drive the clamping plate 12 to move forward until the clamping plate 12 presses the stem of the onion seedling against the fixing plate 11. Subsequently, the control box 3 will control the first distance sensor 14 to detect the distance from the clamping plate 12: If the distance detected by the first distance sensor 14 from the clamping plate 12 is equal to the preset value, it indicates that the stem thickness of the onion seedling is qualified; if the distance detected by the first distance sensor 14 from the clamping plate 12 is less than or greater than the preset value, it indicates that the stem thickness of the onion seedling is unqualified. And when the distance is less than the preset value, it means that the stem thickness of the onion seedling is too small, while when the distance is greater than the preset value, it means that the stem thickness of the onion seedling is too large; After that, the first distance sensor 14 will send a signal to the control box 3. After receiving the signal, the control box 3 will control the first distance sensor 14 to stop detecting. At the same time, the control box 3 will control the telescopic rod of the third electric push rod 701 to shorten, so that the telescopic rod of the third electric push rod 701 drives the movable frame 702, the motor 703, the first linear driver 8, the guide rail frame 10, the fixed plate 11 and the clamping plate 12 to move upward, so that the fixed plate 11 and the clamping plate 12 clamp the onion seedlings and leave the seedling tray. Then, the control box 3 will control the first linear driver 8 to drive the positioning plate 901, the guide rail frame 10 and the contact sensor 15 to move to the right and reset, so that the fixed plate 11 and the clamping plate 12 on the guide rail frame 10 clamp the onion seedlings directly above the feeding pipe 17. Subsequently, the control box 3 will control the telescopic rod of the third electric push rod 701 to extend, so that the telescopic rod of the third electric push rod 701 drives the movable frame 702, the motor 703, the first linear driver 8, the guide rail frame 10, the fixed plate 11 and the clamping plate 12 to move downward and reset. Then, the control box 3 will make a judgment according to the signal sent by the first distance sensor 14: if the first distance sensor 14 detects that the distance between it and the clamping plate 12 is equal to the preset value, the control box 3 will control the telescopic rod of the second linear driver 16 to extend, so that the telescopic rod of the second linear driver 16 pushes the clamping plate 12 to move backward and reset, and the spring 13 stretches, so that the clamping plate 12 releases the qualified onion seedlings, so that the qualified onion seedlings fall downward due to gravity into the feeding pipe 17, so that the qualified onion seedlings fall into the holes in the soil along the feeding pipe 17;If the first distance sensor 14 detects that the distance from the clamping plate 12 is less than or greater than the preset value, the control box 3 will control the motor 703 to drive the first linear actuator 8 to rotate or reverse, so that the first linear actuator 8 drives the guide rail frame 10, the fixed plate 11 and the clamping plate 12 to rotate or reverse, so that the fixed plate 11 and the clamping plate 12 clamp the unqualified onion seedlings directly above the rear or front receiving hopper 18. Then, the control box 3 will control the telescopic rod of the second linear actuator 16 to extend, so that the telescopic rod of the second linear actuator 16 pushes the clamping plate 12 to move and reset, and the spring 13 stretches, so that the clamping plate 12 loosens the unqualified onion seedlings, so that the unqualified onion seedlings fall down due to gravity into the receiving hopper 18, so that the unqualified onion seedlings fall into the collection box 1902 along the receiving hopper 18. And the onion seedlings with too small stem diameter are loaded into the rear collection box 1902, and the onion seedlings with too large stem diameter are loaded into the front collection box 1902. After that, the control box 3 will control the first linear actuator 8 to drive the positioning plate 901, the guide rail frame 10 and the contact sensor 15 to move leftward again, and repeat the above operation of taking out the onion seedlings from the seedling tray until the qualified onion seedlings fall into the holes in the soil along the feeding pipe 17. During this period, when an appropriate amount of unqualified onion seedlings are loaded into the receiving position in the collection box 1902, the control box 3 can drive the second electric slide table 1901 to drive the collection box 1902 to move left or right appropriately to ensure that the unqualified onion seedlings can be evenly loaded into the collection box 1902, so that the collection box 1902 can hold more unqualified onion seedlings; After the qualified onion seedlings are planted in the holes in the soil along the feeding pipe 17, the control box 3 is used to control the second electric push rod 501 to drive the lifting frame 401, the connecting rod 502 and the soil pushing plate 503 to move downward until the soil pushing plate 503 contacts the soil. Then, the control box 3 is used to control the driving wheel 2 to rotate again, so that the driving wheel 2 drives the planting device to move until the hollow cone 404 on the planting device is aligned with the position where the next planting is needed. During the movement of the planting device, the soil pushing plate 503 on the planting device will drive the soil to move to cover the roots of the onion seedlings planted last time. In this way, the automatic planting of onion seedlings can be realized. By repeating the above operation, the automatic planting of onion seedlings can be repeated. After all the onion seedlings are planted, the seedling tray is taken out from the slide of the first electric slide table 6. Then, the control box 3 is used to control the second electric push rod 501 to drive the lifting frame 401, the connecting rod 502 and the soil pushing plate 503 to move upward and reset, so that the soil pushing plate 503 is separated from the soil. Then, the collection box 1902 is removed, and the unqualified onion seedlings in the collection box 1902 are processed. Finally, the collection box 1902 is put back to its original place.

[0035] See Figure 9 and Figure 10As shown, it further includes a loosening mechanism, which includes an air pump 20, an air pipe 21 and a shielding cover 23; an air pump 20 is installed on the left side of the lower part of the frame 1, and the air pump 20 is electrically connected to the control box 3; one end of the air pipe 21 communicates with the air outlet of the air pump 20, and the other end of the air pipe 21 communicates with the hollow pipe 403, and the air pipe 21 is a flexible pipe; through holes 22 are spacedly arranged on the hollow cone 404; a shielding cover 23 is installed on the lower side of the hollow pipe 403.

[0036] By setting the loosening mechanism, after the hollow cone 404 is inserted into the soil, the hollow cone 404 can stay in the soil for a period of time. Then, the control box 3 is used to control the air pump 20 to start, so that the air pump 20 pumps air into the hollow pipe 403 through the air pipe 21. Thus, the air flows along the hollow pipe 403 and the hollow cone 404 and is discharged from the through holes 22, so as to loosen the soil in the hole by using the air discharged from the through holes 22, facilitating the subsequent planting and growth of onion seedlings. And when loosening the soil in the hole, the shielding cover 23 can also shield the splashing soil in the hole to avoid the splashing soil in the hole from damaging the onion seedlings that have been planted around. After a period of time, the control box 3 can be used to control the air pump 20 to close.

[0037] See Figure 11 As shown, it further includes a limiting mechanism, which includes an electric slide rail 24 and a pressing plate 25; an electric slide rail 24 is installed on the left side of the top of the frame 1, and the electric slide rail 24 is electrically connected to the control box 3; two pressing plates 25 are connected to the slider of the electric slide rail 24, and the pressing plates 25 are used to press the onion seedlings in the seedling tray for limiting.

[0038] By setting the limiting mechanism, after the seedling tray is placed on the top of the slide of the first electric slide table 6, the control box 3 can be used to control the electric slide rail 24 to drive the pressing plate 25 to move to the right, so that the pressing plate 25 presses the roots of the onion seedlings in the seedling tray, thereby limiting the onion seedlings. Whenever the control box 3 controls the first linear driver 8 to drive the positioning plate 901, the guide rail frame 10 and the contact sensor 15 to move to the left, the control box 3 will control the electric slide rail 24 to drive the pressing plate 25 to move to the left by a certain distance, so that the pressing plate 25 loosens the onion seedlings to be taken out in advance, thereby releasing the limit on the onion seedlings to be taken out. In this way, when the corresponding onion seedlings are taken out, the pressing plate 25 can limit other onion seedlings to prevent other onion seedlings from being wound by the onion seedlings to be taken out and taken out of the seedling tray; and whenever the control box 3 controls the first electric slide table 6 to drive the seedling tray to move forward, the control box 3 will control the electric slide rail 24 to drive the pressing plate 25 to move to the right, so that the pressing plate 25 limits the roots of the next row of onion seedlings in the seedling tray.

Claims

1. An automated onion planting device, comprising a machine frame (1), drive wheels (2) and a control box (3). The drive wheels (2) are symmetrically and rotatably arranged on the machine frame (1), and the control box (3) is installed on the machine frame (1). It is characterized in that, A frame (1) is provided with a hole-opening mechanism and a soil-pushing mechanism. The hole-opening mechanism is used for opening holes in the soil, and the soil-pushing mechanism is used for covering the soil on the roots of onion seedlings. A first electric slide (6) is provided on the frame (1). An adjusting mechanism is provided on the frame (1), and a first linear actuator (8) is connected to the adjusting mechanism. The adjusting mechanism is used for adjusting the height and orientation of the first linear actuator (8). A positioning mechanism is provided on the first linear actuator (8), and the positioning mechanism is used for detecting the displacement of the telescopic rod of the first linear actuator (8). A guide rail frame (10) is connected to the telescopic rod of the first linear actuator (8). A fixing plate (11) is connected to the guide rail frame (10). A clamping plate (12) is slidably arranged on the guide rail frame (10). A spring (13) is connected between the fixing plate (11) and the clamping plate (12). A first distance sensor (14) is installed on the fixing plate (11), and the first distance sensor (14) is used for detecting the distance between the fixing plate (11) and the clamping plate (12). A contact sensor (15) for contacting the onion seedlings is provided on the guide rail frame (10). A second linear actuator (16) for abutting against the clamping plate (12) is provided on the guide rail frame (10). A feeding pipe (17) and a receiving hopper (18) are provided on the frame (1). A collecting mechanism for collecting onion seedlings with unqualified stem thickness is provided on the frame (1).

2. An automated onion planting device according to claim 1, characterized in that, The hole-opening mechanism includes a lifting frame (401), a first electric push rod (402), a hollow pipe (403) and a hollow cone (404). The lifting frame (401) is slidably arranged on the frame (1). The first electric push rod (402) is installed on the lifting frame (401). The hollow pipe (403) is connected to the telescopic rod of the first electric push rod (402). The hollow cone (404) is connected to the bottom of the hollow pipe (403), and the hollow cone (404) is used for opening holes in the soil.

3. An automated onion planting device according to claim 2, characterized in that, The soil-pushing mechanism includes a second electric push rod (501), a connecting rod (502) and a soil-pushing plate (503). The second electric push rod (501) is installed on the frame (1). The telescopic rod of the second electric push rod (501) is connected to the lifting frame (401). The connecting rods (502) are symmetrically arranged at the bottom of the lifting frame (401). The soil-pushing plate (503) is rotatably arranged on the connecting rod (502).

4. An automated onion planting device according to claim 1, characterized in that, The adjusting mechanism includes a third electric push rod (701), a movable frame (702) and a motor (703). The third electric push rod (701) is installed on the frame (1). The movable frame (702) is connected to the telescopic rod of the third electric push rod (701). The motor (703) is installed on the movable frame (702). The first linear actuator (8) is connected to the output shaft of the motor (703).

5. An onion automatic planting device as claimed in claim 1, characterized in that, The positioning mechanism includes a positioning plate (901) and a second distance sensor (902). The positioning plate (901) is connected to the telescopic rod of the first linear actuator (8). The second distance sensor (902) is provided on the first linear actuator (8), and the second distance sensor (902) is used for detecting the distance from the positioning plate (901).

6. An automated onion planting device according to claim 1, characterized in that, The collection mechanism includes a second electric slide table (1901) and a collection box (1902). The second electric slide tables (1901) are symmetrically arranged on the frame (1), and the collection box (1902) is arranged on the slide of the second electric slide table (1901). The collection box (1902) is used to collect onion seedlings with unqualified stem thickness.

7. An automated onion planting device according to claim 2, characterized in that, It further includes a loosening mechanism, which includes an air pump (20), an air pipe (21) and a shielding cover (23). The air pump (20) is installed on the frame (1). The air outlet of the air pump (20) is communicated with the hollow pipe (403) through the air pipe (21). Through holes (22) are spaced apart on the hollow cone (404), and the shielding cover (23) is installed on the hollow pipe (403).

8. An automated onion planting device according to claim 1, characterized in that, It further includes a limiting mechanism, which includes an electric slide rail (24) and a pressing plate (25). The electric slide rail (24) is installed on the frame (1), and the pressing plate (25) is connected to the slider of the electric slide rail (24). The pressing plate (25) is used to press the onion seedlings in the seedling tray for limiting.

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