Corn thinning auxiliary device

Abstract

The invention provides a corn thinning auxiliary device which comprises a walking supporting mechanism, a lying plate, an isolation cover and a seedling pulling and smashing mechanism, the walking supporting mechanism is used for achieving walking and supporting of the lying plate, the lying plate can move up and down to be adjusted and positioned, an observation hole is formed in one end of the lying plate, and the seedling pulling and smashing mechanism is arranged in the observation hole. The isolation cover and the seedling pulling and smashing mechanism are hung at the bottom of the lying plate through a first tension spring and a second tension spring respectively, the isolation cover and the seedling pulling and smashing mechanism are adjacent to the observation hole, the isolation cover is used for achieving isolation protection of corn seedlings needing to be reserved, and the seedling pulling and smashing mechanism is used for achieving pulling and smashing of the corn seedlings needing to be pulled out. A worker lies on the lying plate for thinning operation, so that the labor intensity of the worker is greatly reduced; when two seedlings with close roots are thinned, corn seedlings in the isolation cover can be effectively prevented from being synchronously pulled out by utilizing the pressing effect of the edge of the isolation cover on the peripheries of the roots of the seedlings, so that the thinning quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of corn planting, in particular to a corn thinning auxiliary device. Background Art

[0002] Corn thinning refers to the process of removing overcrowded or poorly growing seedlings in a certain proportion during the corn seedling stage to retain strong and uniform plants and create good conditions for the growth and development of corn. Thinning is usually done when the corn seedlings have 3-4 true leaves.

[0003] In some economically backward areas, corn is still planted by artificially digging holes. To increase the survival rate of corn, at least two corn seeds are usually placed in the dug soil holes. To ensure the healthy growth of corn seedlings in the later stage, corn thinning is required during the true leaf stage.

[0004] There are two main existing methods of corn thinning. One is manual thinning, that is, thinning is done manually by bending over or squatting on the ground. The thinning process takes a long time, and the labor intensity is high when bending over or squatting on the ground for a long time. The other is mechanized thinning, such as the Chinese invention patent with publication number CN117813950A, which discloses an automated corn thinning device and method of use. The invention patent uses image recognition technology to identify specific corn seedlings, and then controls the gripper on the mechanical arm to achieve thinning operations based on the image processing structure. The device has a high degree of automation, but the structure is complex and not convenient for subsequent inspection and maintenance. Furthermore, when the roots of two corn seedlings are very close, when one of the seedlings is directly pulled out by the gripper on the mechanical arm, the two seedlings may be pulled out at the same time, thereby affecting the quality of thinning. Summary of the invention

[0005] The purpose of the present invention is to provide a corn thinning auxiliary device, which allows workers to lie on a lying board to perform thinning operations, greatly reducing the intensity of manual labor; when thinning two seedlings whose roots are relatively close to each other, the edge of the isolation cover can be used to press around the roots of the seedlings, so that the corn seedlings in the isolation cover can be effectively prevented from being pulled out synchronously, thereby improving the quality of thinning.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a corn thinning auxiliary device, including a walking support mechanism, a lying board, an isolation cover, and a seedling pulling and crushing mechanism, the walking support mechanism is used to realize the walking and support of the lying board, the lying board can be moved up and down for adjustment and positioning, an observation hole is arranged at one end of the lying board, the isolation cover and the seedling pulling and crushing mechanism are respectively hung on the bottom of the lying board through a first tension spring and a second tension spring, and the isolation cover and the seedling pulling and crushing mechanism are adjacent to the observation hole, the isolation cover is used to realize the isolation and protection of the corn seedlings that need to be retained, and the seedling pulling and crushing mechanism is used to realize the pulling and crushing of the corn seedlings that need to be pulled out.

[0007] Preferably, the walking support mechanism includes a battery, an electric tricycle rear axle, and a support shaft. A freely rotatable adjusting screw is vertically arranged on the upper middle part of the electric tricycle rear axle and the support shaft. A guide support rod parallel to the adjusting screw is arranged on both sides of the adjusting screw. The two ends of the lying board are respectively mounted on the corresponding adjusting screw and guide support rod, and the lying board is threadedly matched with the adjusting screw. The battery provides power for the first driving motor on the rear axle of the electric tricycle, and a walking wheel is arranged at both ends of the electric tricycle rear axle and the support shaft.

[0008] Furthermore, a slide is respectively arranged on the left and right sides of the bottom of the prone lying board, a T-shaped slide groove is arranged at the bottom of the slide, both ends of the T-shaped slide groove are in a closed state, a T-shaped hanging rack is arranged in the T-shaped slide groove, the T-shaped hanging rack can move freely in the T-shaped slide groove, and the upper parts of the first tension spring and the second tension spring are hung on the bottom of the corresponding T-shaped hanging rack.

[0009] Furthermore, the isolation cover includes an isolation cover body and a first handle. The isolation cover body is an inverted barrel structure and is made of transparent plastic material. The first handle is fixedly arranged on the upper part of the isolation cover body, and the upper part of the first handle is connected to the bottom of the first tension spring.

[0010] Furthermore, the seedling pulling and crushing mechanism includes a square support cover, a seedling pulling mechanism, and a crushing mechanism. The bottom of the square support cover is in an open state. The seedling pulling mechanism includes a driven roller shaft, an active roller shaft, a movable support frame, a roller shaft driving mechanism, and an auxiliary driving mechanism of the movable support frame. The two driven roller shafts are arranged on the left side of the bottom of the square support cover to rotate up and down. The movable support frame is arranged on the right side of the bottom of the square support cover, and the movable support frame can move left and right relative to the square support cover under the push of the auxiliary driving mechanism of the movable support frame. The two active roller shafts are distributed up and down on the movable support frame, and the driven roller shaft is opposite to the active roller shaft left and right. The roller shaft driving mechanism is used to drive the two active roller shafts to rotate synchronously, and the crushing mechanism is used to realize the crushing of the corn seedlings that emerge from between the active roller shaft and the driven roller shaft.

[0011] Furthermore, the crushing mechanism includes a second drive motor, a rotating shaft, and a steel wire rope. The second drive motor is arranged on the upper part of the square support cover, the rotating shaft is arranged inside the square support cover and the upper part of the rotating shaft is connected to the output shaft of the second drive motor, the bottom of the rotating shaft is close to the upper part of the active roller shaft, the two steel wire ropes are relatively arranged at the bottom of the rotating shaft, and the battery provides power for the second drive motor.

[0012] Further, the movable support frame includes a 9-shaped frame, a first support plate, a first support rod, and a first spring. The two active roller shafts are arranged on the 9-shaped frame to rotate up and down. The 9-shaped frame is arranged on the first support plate, and the 9-shaped frame can move left and right relative to the first support plate. The first support rod is fixedly arranged on the back of the first support plate and the first support rod is movably sleeved on the side wall of the square support cover. A limiting ring is fixedly arranged on the right end of the first support rod. The first spring is sleeved on the first support rod and the first spring is clamped between the side wall of the square support cover and the limiting ring. Two first guide rods located on both sides of the first support rod are arranged on the first support plate, and the first guide rods pass through the side wall of the square support cover; the roller shaft driving mechanism includes a third driving motor and a synchronous belt. The third driving motor is arranged on one side of the 9-shaped frame, and the output shaft of the third driving motor is connected to one end of one of the active roller shafts. A synchronous wheel is arranged at the other end of each of the two active roller shafts, and the synchronous belt is sleeved on the two synchronous wheels. The battery provides power for the third driving motor.

[0013] Furthermore, two second guide rods are fixedly provided on the back side of the ]-shaped frame, and the two second guide rods are movably sleeved on the first support plate. A limit plate is provided on the outer side of the second guide rod, and a second spring is sleeved on the second guide rod, and the second spring is clamped between the ]-shaped frame and the first support plate.

[0014] Furthermore, the auxiliary driving mechanism of the movable support frame includes a second handle, a driving lever, and a lever support rod. The second handle is in a shape of] and is fixedly arranged on the outer side of the right side wall of the square support cover. The lever support rod is horizontally fixedly arranged on the left side wall of the second handle. The middle lower part of the driving lever is hingedly connected to the lever support rod. A long hole is arranged at the lower part of the driving lever, a through groove is arranged at the right end of the first support rod, and a hinge shaft is arranged in the through groove, and the hinge shaft is sleeved in the long hole.

[0015] Furthermore, a first guide plate is arranged below the two driven rollers, the first guide plate is arranged in an inclined state with the left side lower and the right side higher, a second guide plate is arranged to the right of the first guide plate, the second guide plate is arranged in an inclined state with the left side higher and the right side lower, a plurality of first chip removal holes are arranged on the first guide plate and the second guide plate, and a seedling gap is reserved between the first guide plate and the second guide plate; a second chip removal hole corresponding to the steel wire rope is arranged on the front side wall and the rear side wall of the square support cover, an exposed hole corresponding to the synchronous belt and the third drive motor is respectively arranged on the front side wall and the rear side wall of the square support cover, the synchronous belt and the third drive motor are exposed to the outside of the square support cover through the corresponding exposed holes, a first switch for controlling the operation of the first drive motor is arranged on the first handle, and a second switch for synchronously controlling the operation of the second drive motor and the third drive motor is arranged on the second handle.

[0016] The beneficial effects of the present invention are as follows: the structure of the present invention is relatively simple and easy to manufacture. At the same time, the manufacturing cost of the present invention is low, and it is easy to promote and apply in areas with relatively backward economic conditions. When the device is used for thinning, the operator lies completely on the lying board. Compared with the manual operation that requires bending or squatting, the lying method can greatly reduce the labor intensity of the manual labor, and the manual movement is also driven by the walking support mechanism, so that it is convenient for the manual operation to use the device for long-term thinning, thereby improving the efficiency of the thinning operation. The first tension spring and the second tension spring have a certain flexibility. At the same time, the first tension spring and the second tension spring can both slide in the sliding body, so that it is convenient for the staff to smoothly realize the flexible movement of the isolation cover and the seedling pulling and crushing mechanism, and then realize precise thinning. The lying board can be adjusted in height, so as to meet the thinning needs of different staff members. When thinning two seedlings whose roots are relatively close to each other, the edge of the isolation cover is used to press around the roots of the seedlings, so that the corn seedlings located in the isolation cover can be effectively placed. The seedlings can be pulled out step by step, thereby improving the quality of thinning; the isolation cover body is made of transparent material, and when the seedlings are placed, it is convenient to make the seedlings close to the side wall of the isolation cover body, so that when pulling out the seedlings, it is beneficial to protect the roots of the seedlings in the isolation cover body; the seedlings are clamped by the driven roller and the active roller and rotated by the active roller, so that the seedlings are automatically pulled out, thereby reducing the labor intensity of pulling out the seedlings; the pulled out seedlings are directly crushed by the wire rope, and the crushed seedling chips can be directly used as fertilizer. At the same time, there is no need to collect the pulled out seedlings The first guide plate and the second guide plate are used to guide the seedlings, thereby improving the efficiency of thinning seedlings; the active roller can slide freely relative to the first support plate, thereby effectively preventing the active roller and the driven roller from directly clamping and cutting the seedlings, thereby ensuring the smooth pulling out of the seedlings; the guiding effect of the first guide plate and the second guide plate can make the seedlings smoothly enter between the active roller and the driven roller, thereby ensuring the smooth pulling out of the seedlings; the first chip discharge hole and the second chip discharge hole are used to facilitate the direct discharge of seedling debris, so that the seedling pulling and crushing mechanism can perform long-term continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a side view of the overall structure of the present invention;

[0020] Figure 3It is a schematic diagram of the distribution of the isolation cover and the seedling pulling and crushing mechanism under the prone bed;

[0021] Figure 4 It is a schematic diagram of the overall structure of the seedling pulling and crushing mechanism;

[0022] Figure 5 It is a longitudinal cross-sectional view of the seedling pulling and crushing mechanism;

[0023] Figure 6 It is a schematic diagram of the connection between the active roller shaft and the movable support frame;

[0024] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 8 for Figure 3 Enlarged view of point B in the middle;

[0026] Fig. 9 for Figure 5 Enlarged view of point C in the middle;

[0027] In the figure: 11 rear axle of electric tricycle, 111 first driving motor, 12 adjusting screw, 13 guide support rod, 14 walking wheel, 2 lying board, 21 observation hole, 211 sponge pad, 22 slideway, 221 T-shaped hanging rack, 3 isolation cover, 31 isolation cover body, 32 first handle, 4 seedling pulling and crushing mechanism, 41 square support cover, 411 first guide plate, 412 second guide plate, 413 first chip removal hole, 414 seedling gap, 415 second chip removal hole, 416 exposed hole, 421 driven roller shaft, 422 active roller shaft, 4231] shaped frame, 42311 second guide rod, 42312 second spring, 42313 limit plate, 4232 first support plate, 42321 first guide rod, 4233 first support rod, 42331 limit ring, 42332 hinge shaft, 4234 first spring, 431 second drive motor, 432 rotating shaft, 433 wire rope, 4241 third drive motor, 4242 synchronous belt, 4251 second handle, 4252 drive lever, 42521 long hole, 4253 lever support rod, 101 first tension spring, 102 second tension spring. DETAILED DESCRIPTION

[0028] The following will be combined with specific embodiments and attached Figure 1-9 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the present invention, rather than all the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0029] The present invention provides a corn seedling thinning auxiliary device (such as Figure 1As shown), it includes a walking support mechanism, a prone board 2, an isolation cover 3, and a seedling pulling and crushing mechanism 4. The walking support mechanism is used to realize the walking and support of the prone board 2. In actual application, the prone board 2 is used to realize the support of the human body, so that the human body can maintain a prone state and lie on the prone board 2 to perform mobile thinning operations. The human body maintains a prone state to perform mobile thinning operations, which can greatly reduce the labor intensity of thinning operations compared with maintaining a bent or squatting posture for a long time; the prone board 2 can be moved up and down for adjustment and positioning. The prone board 2 can be moved up and down for adjustment and positioning, which can facilitate different workers to adjust the height of the prone board 2 according to their actual working height, thereby improving the working flexibility of the present invention. An observation hole 21 is set at one end of the lying board 2. During the thinning operation, the worker's face faces downward and is placed in the observation hole 21, so that the worker can observe the bottom of the lying board 2, which is convenient for the worker to perform thinning operations. In order to improve the comfort of the worker's face in the observation hole 21, a circle of sponge pad 211 is set on the upper outer side of the observation hole 21. The isolation cover 3 and the seedling pulling and crushing mechanism 4 are respectively hung on the bottom of the lying board 2 by the first tension spring 101 and the second tension spring 102, and the isolation cover 3 and the seedling pulling and crushing mechanism 4 are adjacent to the observation hole 21. The isolation cover 3 is used to achieve isolation and protection of corn seedlings that need to be retained, and the seedling pulling and crushing mechanism 4 is used to achieve the pulling and crushing of corn seedlings that need to be pulled out. The corn seedlings that need to be retained are isolated by the isolation cover 3, which effectively prevents them from being pulled out together during the thinning process; the seedling pulling and crushing mechanism 4 is used to pull out and simultaneously crush the corn seedlings that need to be pulled out. The corresponding corn seedlings are pulled out, and the thinning operation is completed. The pulled out seedlings are simultaneously crushed, and there is no need to collect and clean the pulled out seedlings later, which simplifies the corn thinning operation process. At the same time, the debris produced by the crushing can be directly returned to the field as fertilizer, thereby helping to reduce the use of chemical fertilizers in corn planting; in actual application, the worker operates the isolation cover 3 with one hand to cover the corresponding corn seedlings, and operates the seedling pulling and crushing mechanism 4 with the other hand to pull out and simultaneously crush the corresponding corn seedlings, thereby completing the thinning operation.

[0030] On the basis of the above embodiment, the specific implementation method of the walking support mechanism to realize the up and down adjustment and walking of the lying board 2 is as follows: the walking support mechanism includes a battery, an electric tricycle rear axle 11, and a support shaft. The electric tricycle rear axle 11 is a known technical product in the prior art, so its detailed structure is not described in detail. A freely rotatable adjusting screw 12 is vertically arranged on the upper side of the middle part of the electric tricycle rear axle 11 and the support shaft, and a guide support rod 13 parallel to the adjusting screw 12 is arranged on both sides of the adjusting screw 12. Specifically, a support seat is fixedly arranged on the outer side wall of the electric tricycle rear axle 11 and the support shaft. The joint screw 12 is rotatably arranged on the support seat, and the adjusting screw 12 can only rotate relative to the support seat and cannot move up and down. The specific implementation method of the adjusting screw 12 being arranged on the support seat and can only rotate but cannot move up and down is a conventional technical means in the mechanical field and is also known to those skilled in the art. Therefore, the specific connection method between the adjusting screw 12 and the support seat is no longer introduced. The two ends of the lying plate 2 are respectively sleeved on the corresponding adjusting screw 12 and the guide support rod 13, and the lying plate 2 is threadedly matched with the adjusting screw 12. In actual application, the upward movement of the lying plate 2 is achieved by synchronously rotating the two adjusting screws 12. The lying board 2 can be raised or lowered to adjust the height of the lying board 2. In order to facilitate the rotation of the adjusting screw 12, a handle can be provided on the upper part of the adjusting screw 12. The lying board 2 cannot be rotated due to the restriction of the four guide support rods 13. At the same time, the positioning of the lying board 2 is achieved by utilizing the relationship between the screw teeth in the threaded fit. The battery provides power for the first drive motor 111 on the rear axle 11 of the electric tricycle. A walking wheel 14 is provided at both ends of the rear axle 11 and the support shaft of the electric tricycle. When the first drive motor 111 is started, the walking wheels 14 on both sides of the rear axle 11 of the electric tricycle are rotated, thereby achieving the whole device. Walking, because the corn seedlings are distributed in rows, during the thinning operation, the lying board 2 is located just above a row of corn seedlings, and then, through the rotation of the walking wheel 14, the lying board 2 is driven to walk on the row of corn seedlings. During the continuous walking process, if it is found that the lying board 2 deviates from the direction of a row of corn seedlings, the thinning operation is stopped, and then, the overall movement of the device is to point the direction of the lying board 2 to the direction of some corn seedlings again, so that the corn thinning operation can continue. The battery can be placed in front of the observation hole 21 or on the lower rear side of the lying board 2 to prevent the battery from affecting the workers lying on the lying board 2.

[0031] When thinning out the seedlings, in order to improve the mobility of the isolation cover 3 and the seedling crushing mechanism 4 so as to flexibly carry out thinning operations under various circumstances, here, on the basis of the above-mentioned embodiment, a slide 22 is respectively arranged on the left and right sides of the bottom of the lying board 2, and a T-shaped slide groove is arranged at the bottom of the slide 22, and the two ends of the T-shaped slide groove are in a closed state. A T-shaped hanging frame 221 is arranged in the T-shaped slide groove, and the T-shaped hanging frame 221 can move freely in the T-shaped slide groove. On the basis that the T-shaped hanging frame 221 can slide freely, in order to facilitate the free swing of the T-shaped hanging frame 221 within a certain degree Here, the upper cross bar of the T-shaped hanging frame 221 is made of round rod, and the upper parts of the first tension spring 101 and the second tension spring 102 are hung on the corresponding bottom of the T-shaped hanging frame 221. Specifically, a through hole is set on the bottom vertical rod of the T-shaped hanging frame 221, and the upper parts of the first tension spring 101 and the second tension spring 102 are hung in the corresponding through hole. The first tension spring 101 and the second tension spring 102 have a certain telescopic ability, which is convenient for realizing the downward movement of the isolation cover 3 and the seedling pulling and crushing mechanism 4. At the same time, it can also assist in realizing the upward movement of the isolation cover 3 and the seedling pulling and crushing mechanism 4, thereby reducing the labor intensity to a certain extent.

[0032] On the basis of the above embodiment, the specific implementation of the isolation cover 3 is as follows: the isolation cover 3 includes an isolation cover body 31 and a first handle 32. The isolation cover body 31 is an inverted barrel structure and is made of a transparent plastic material. In actual application, the isolation cover body 31 sets the corn seedlings to be retained inside it. By properly moving the isolation cover body 31, the inner edge of the isolation cover body 31 can be fitted with the root of the corn seedlings, so that the edge of the isolation cover body 31 is used to press the soil in the root area of ​​the corn seedlings. When it is necessary to pull out the corn seedlings that are very close to the covered corn seedlings, When the corn seedlings are being pulled out, the edge of the isolation cover body 31 is used to press and hold them, which can effectively prevent the covered corn seedlings from being pulled out together, thereby effectively ensuring the quality of thinning. Because the isolation cover body 31 is made of transparent plastic, it is convenient for the worker to move the isolation cover body 31 by observation so that its internal edge fits with the root and stem of the corresponding corn seedlings. The first handle 32 is fixedly arranged on the upper part of the isolation cover body 31, and the upper part of the first handle 32 is connected to the bottom of the first tension spring 101. Specifically, a through hole is arranged on the upper part of the first handle 32, and the bottom of the first tension spring 101 is directly hung in the through hole.

[0033] On the basis of the above embodiment, the specific implementation of the seedling pulling and crushing mechanism is as follows: the seedling pulling and crushing mechanism includes a square support cover 41, a seedling pulling mechanism, and a crushing mechanism. The bottom of the square support cover 41 is in an open state. When the seedling pulling and crushing operations are performed, the corn seedlings are first covered in the square support cover 41. The seedling pulling mechanism includes a driven stick shaft 421, an active roller shaft 422, a movable support frame, a roller shaft driving mechanism, and a movable support frame auxiliary driving mechanism. The two driven roller shafts 421 are arranged on the left side of the bottom of the square support cover 41 for rotation up and down. The driven roller shafts 421 can rotate freely under the action of external force. The movable support frame is arranged on the right side of the bottom of the square support cover 41, and the movable support frame is arranged on the movable support frame auxiliary driving mechanism. Under the push of the auxiliary driving mechanism, it can move left and right relative to the square support cover 41. The two active rollers 422 are distributed up and down on the movable support frame, and the driven roller 421 is opposite to the active roller 422. The roller driving mechanism is used to drive the two active rollers 422 to rotate synchronously. In actual application, when the stem diameter of the corn seedling enters between the driven roller 421 and the active roller 422, the high-speed rotating active roller 422 is continuously pushed to approach the driven roller 421. When the active roller 422 and the driven roller 421 squeeze the corn stem diameter, the friction of the active roller 422 on the stem diameter is used to realize that the stem diameter is continuously lifted upward. As the squeezing degree continues to increase, it can finally be realized. The corn seedlings are pulled out of the soil, thereby achieving thinning. In order to increase the friction between the active roller shaft 422 and the diameter of the corn stalks so as to improve the pulling-out effect of the seedlings, a plurality of protrusions or protrusions can be provided on the surface of the active roller shaft 422. The crushing mechanism is used to crush the corn seedlings that emerge from between the active roller shaft 422 and the driven roller shaft 421. Specifically, the crushing mechanism includes a second drive motor 431, a rotating shaft 432, and a wire rope 433. The second drive motor 431 is arranged on the upper part of the square support cover 41, and the rotating shaft 432 is arranged inside the square support cover 41. The upper part of the rotating shaft 432 is connected to the output shaft of the second drive motor 431. The second drive motor 431 can be used to realize the rotating shaft 43 2 rotates at a high speed, the bottom of the rotating shaft 432 is close to the upper part of the active roller shaft 422, the two steel wires 433 are relatively arranged at the bottom of the rotating shaft 432, the high-speed rotating steel wires 433 are located at the upper parts of the active roller shaft 422 and the driven roller shaft 421, when the leaves or stems of the corn seedlings jump out from between the active roller shaft 422 and the driven roller shaft 421, they are directly hit and crushed by the high-speed rotating steel wires 433, thereby achieving the crushing of the seedlings. In order to improve the crushing effect, the rotating shaft 432 is located at the right position inside the square support cover 41, so that the steel wires 433 can cover the upper area of ​​the corn seedlings after being clamped by the driven roller shaft 421 and the active roller shaft 422, thereby using the steel wires 432 to effectively hit and crush the corn seedlings.The battery provides power for the second driving motor 431.

[0034] On the basis of the above embodiment, the specific implementation method of the movable support frame being arranged on the square support cover 41 is as follows: the movable support frame includes a ]-shaped frame 4231, a first support plate 4232, a first support rod 4233, and a first spring 4234. The two active rollers 422 are arranged on the ]-shaped frame 4231 for vertical rotation. The ]-shaped frame 4231 is arranged on the first support plate 4232, and the ]-shaped frame 4231 can move left and right relative to the first support plate 4232. The first support rod 4233 is fixedly arranged on the back side of the first support plate 4232 and the first support rod 4233 is movably sleeved on the side wall of the square support cover 41. By pushing the first support rod 4233, the two active rollers 422 can be moved between the two active rollers 422. The roller shaft 422 is constantly approaching the driven roller shaft 421, and a limiting ring 42331 is fixedly provided at the right end of the first support rod 4233, and the first spring 4234 is sleeved on the first support rod 4233 and the first spring 4234 is clamped between the side wall of the square support cover 41 and the limiting ring 42331. The pushing action of the first spring 4234 makes the two active roller shafts 422 move away from the driven roller shaft 421. When the first support plate 4232 is pressed against the inner side of the square support cover 41, the active roller shaft 422 stops moving. At this time, the seedling clearance reserved between the driven roller shaft 421 and the active roller shaft 422 is relatively large, so that when the square support cover 41 is continuously moved downward to buckle the corn seedlings, This makes it easier for the corn seedlings to enter between the driven roller shaft 421 and the active roller shaft 422, thereby facilitating the subsequent clamping, pulling and crushing of the corn seedlings. In order to improve the left and right movement stability of the first support plate 4232, two first guide rods 42321 located on both sides of the first support rod 4233 are provided on the first support plate 4232, and the first guide rods 42321 pass through the side walls of the square support cover 41. When it is necessary to continuously move the active roller shaft 422 closer to the driven roller shaft 421, the first support rod 4233 is pushed and the elastic force of the first spring 4234 is overcome to realize the continuous leftward movement of the active roller shaft 422; the roller shaft driving mechanism includes a third driving motor 4241 and a synchronous belt 4242. The machine 4241 is arranged on one side of the]-shaped frame 4231, and the output shaft of the third drive motor 4241 is connected to one end of the active roller shaft 422. A synchronous wheel is arranged at the other end of the two active roller shafts 422. The synchronous belt 4242 is sleeved on the two synchronous wheels. The battery provides power for the third drive motor 4241. When the third drive motor 4241 is started, it drives an active roller shaft 422 to rotate. The rotation of the synchronous belt 4242 can realize the synchronous rotation of the two active roller shafts 422. The rotation of the two active roller shafts 422 can improve the pulling effect of the corn seedlings squeezed between the driven roller shaft 421 and the active roller shaft 422, thereby ensuring the smooth pulling out of the corn seedlings.

[0035] On the basis of the above embodiment, a specific implementation manner in which the ]-shaped frame 4231 can move left and right relative to the first support plate 4232 is as follows: two second guide rods 42311 are fixedly arranged on the back side of the ]-shaped frame 4231, and the two second guide rods 42311 are movably sleeved on the first support plate 4232, a limit plate 42313 is arranged on the outer side of the second guide rod 42311, and a second spring 42312 is sleeved on the second guide rod 42311, and the second spring 42312 is clamped between the ]-shaped frame 4231 and the first support plate 4232. By utilizing the telescopic elasticity of the second spring 42312, the active roller shaft 422 can always fit with the corn seedlings when clamping the stem diameter of the corn seedlings. At the same time, when the thrust applied by the first support rod 4233 is too large, the corn seedlings can be effectively prevented from being directly clamped off by the active roller shaft 422, thereby ensuring the smooth pulling of the corn seedlings.

[0036] On the basis of the above embodiment, the specific implementation of the auxiliary driving mechanism of the movable support frame is as follows: the auxiliary driving mechanism of the movable support frame includes a second handle 4251, a driving lever 4252, and a lever support rod 4253. The second handle 4251 is in the shape of a [ and is fixedly arranged on the outer side of the right side wall of the square support cover 41. The lever support rod 4253 is horizontally fixedly arranged on the left side wall of the second handle 4251. The middle lower part of the driving lever 4252 is hingedly connected to the lever support rod 4253. A long hole 42521 is arranged at the lower part of the driving lever 4252. A right end of the first support rod 4233 is arranged A through groove is provided in which a hinge shaft 42332 is arranged, and the hinge shaft 42332 is sleeved in the long hole 42521. When operating the seedling pulling and crushing mechanism, the worker holds the second handle 4251 in his hand. When the seedling pulling and crushing is required, the upper part of the driving lever 4252 is swung by the fingers. The upper part of the driving lever 4252 rotates, which drives the lower part to rotate in the opposite direction. During the reverse rotation of the lower part, the first support rod 4233 is pushed to move. The movement of the first support rod 4233 finally realizes the movement of the active roller shaft 422, and then realizes the continuous approach of the active roller shaft 422 to the driven roller shaft 421.

[0037] In practical applications, when the square support cover 41 is buckled on the corn seedlings that need to be removed, in order to facilitate the corn seedlings to smoothly enter between the driven roller shaft 421 and the active roller shaft 422, a first guide plate 411 is arranged below the two driven roller shafts 421, and the first guide plate 411 is arranged in an inclined state with the left side lower and the right side higher. A second guide plate 412 is arranged on the right side of the first guide plate 411, and the second guide plate 412 is arranged in an inclined state with the left side higher and the right side lower. A plurality of first chip removal holes 413 are arranged on the first guide plate 411 and the second guide plate 412, and the first chip removal holes 413 are used to facilitate crushing. The generated debris is directly discharged from the square support cover 41, and a seedling gap 414 is reserved between the first guide plate 411 and the second guide plate 412; after the corn seedlings enter the seedling gap 414, as the square support cover 41 is continuously lowered, the corn seedlings are continuously raised relative to the active roller 422, and when the upper part of the corn seedlings reaches a level state with the steel wire rope 433, as the square support cover 41 is continuously lowered, the steel wire rope 433 is hit and crushed to the corn seedlings. Because the corn seedlings are pulled out by the active roller 422, after the square support cover 41 stops moving downward, it can be ensured that the corn seedlings continue to move toward the steel wire rope 433. The square support cover 41 is provided with a second chip removal hole 415 corresponding to the steel wire rope 433 on the front side wall and the rear side wall, and the second chip removal hole 415 is used to directly discharge part of the debris. The square support cover 41 is provided with an exposed hole 416 corresponding to the synchronous belt 4242 and the third drive motor 4241 on the front side wall and the rear side wall, respectively. The synchronous belt 4242 and the third drive motor 4241 are exposed to the outside of the square support cover 41 through the corresponding exposed holes 416. This facilitates the two ends of the driven roller 421 and the active roller 422 to be as close as possible to the corresponding side walls of the square support cover 41, thereby effectively ensuring that the corn seedlings can smoothly enter between the driven roller 421 and the active roller 422, and then ensuring the smooth pulling and crushing of the subsequent seedlings. A first switch for controlling the operation of the first drive motor 11 is provided on the first handle 32, and a second switch for synchronously controlling the operation of the second drive motor 431 and the third drive motor 4241 is provided on the second handle 4251. The walking control is achieved by the control of the first switch, and the pulling and crushing of the seedlings are achieved by the control of the second switch.

[0038] When using the device to perform corn thinning operations, first, adjust the direction of the prone board 2 according to the arrangement direction of a row of corn seedlings, so that the length direction of the prone board 2 is in the same direction as the direction of a row of corn seedlings, and then make the prone board 2 located directly above the corn seedlings; then the thinning worker lies directly on the prone board 2, with his face placed in the observation hole 21, and then, holds the first handle 32 with the left hand and the second handle 4251 with the right hand, and ensures that the right hand can synchronously press the upper part of the driving lever 4252. After both hands complete the above-mentioned holding, use the left and right hands to start the first switch and the second handle 4251. When the second switch is turned on, the lying board 2 starts to move slowly and the wire rope 433 and the active roller 422 start to rotate. During the slow movement of the lying board 2, the worker operates the isolation cover 3 with his left hand to buckle the corn seedlings that need to be retained, and operates the square support cover 41 with his right hand to keep it in a basically vertical state and slowly buckle it around the seedlings that need to be pulled out. When the buckling of the square support cover 41 is completed, the upper part of the driving lever 4252 is pulled by the right hand, so that the active roller 422 keeps approaching the driven roller 421. When the active roller 422 and the driven roller 421 complete the buckling of the corn seedlings After the diameter of the seedling stem is clamped, the roots of the corn seedlings are pulled out of the soil under the high-speed rotation of the active roller 422, and the pulled-up seedlings continue to move upward with the continuous rotation of the active roller 422. During their continuous upward movement, they are continuously hit and crushed by the wire rope 433, thereby completing a thinning operation. As the lying plate 2 continues to move, the worker can perform the next thinning operation by controlling the isolation cover 3 and the seedling pulling and crushing mechanism 4; when the roots of the corn seedlings to be retained and the corn seedlings to be pulled out are relatively close, the isolation cover 3 is first used to realize the thinning of the corn seedlings to be retained. The rice seedlings are buckled and the isolation cover 3 is moved to make its inner side wall fit with the root and stem of the corn seedlings to be retained, and then the isolation cover 3 is pressed. After the isolation cover 3 is pressed, the square support cover 41 is operated to buckle it on the periphery of the corn seedlings to be pulled out, and then the driving lever 4252 is pulled to make the active roller shaft 422 and the driven roller shaft 421 close to each other for the seedling pulling operation, and then the cleaning of the corn seedlings to be pulled out can be completed. The above operation can realize the safe operation of thinning two relatively close corn seedlings, so as to achieve effective protection of the corn seedlings that need to be retained.

[0039] In the present invention, "up", "down", "front", "back", "left" and "right" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0040] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0041] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the present invention, but the present invention is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A corn seedling thinning auxiliary device, characterized in that: It includes a walking support mechanism, a prone board, an isolation cover, and a seedling pulling and crushing mechanism. The walking support mechanism is used to realize the walking and support of the prone board. The prone board can be moved up and down for adjustment and positioning. An observation hole is arranged at one end of the prone board. The isolation cover and the seedling pulling and crushing mechanism are respectively hung on the bottom of the prone board through a first tension spring and a second tension spring, and the isolation cover and the seedling pulling and crushing mechanism are adjacent to the observation hole. The isolation cover is used to realize the isolation and protection of the corn seedlings that need to be retained, and the seedling pulling and crushing mechanism is used to realize the pulling and crushing of the corn seedlings that need to be pulled out.

2. A corn seedling thinning auxiliary device according to claim 1, characterized in that: The walking support mechanism includes a battery, an electric tricycle rear axle, and a support shaft. A freely rotatable adjusting screw is vertically arranged on the upper middle part of the electric tricycle rear axle and the support shaft. A guide support rod parallel to the adjusting screw is arranged on both sides of the adjusting screw. The two ends of the lying board are respectively mounted on the corresponding adjusting screw and guide support rod, and the lying board is threadedly matched with the adjusting screw. The battery provides power for the first driving motor on the rear axle of the electric tricycle. A walking wheel is arranged at both ends of the electric tricycle rear axle and the support shaft.

3. A corn seedling thinning auxiliary device according to claim 2, characterized in that A slide is respectively arranged on the left and right sides of the bottom of the lying board, a T-shaped slide groove is arranged at the bottom of the slide, both ends of the T-shaped slide groove are in a closed state, a T-shaped hanging rack is arranged in the T-shaped slide groove, and the T-shaped hanging rack can move freely in the T-shaped slide groove, and the upper parts of the first tension spring and the second tension spring are hung on the bottom of the corresponding T-shaped hanging rack.

4. A corn thinning auxiliary device according to claim 3, characterized in that: The isolation cover includes an isolation cover body and a first handle. The isolation cover body is an inverted barrel structure and is made of transparent plastic material. The first handle is fixedly arranged on the upper part of the isolation cover body, and the upper part of the first handle is connected to the bottom of the first tension spring.

5. A corn seedling thinning auxiliary device according to claim 4, characterized in that: The seedling pulling and crushing mechanism includes a square support cover, a seedling pulling mechanism, and a crushing mechanism. The bottom of the square support cover is in an open state. The seedling pulling mechanism includes a driven stick shaft, an active roller shaft, a movable support frame, a roller shaft driving mechanism, and an auxiliary driving mechanism of the movable support frame. The two driven roller shafts are arranged on the left side of the bottom of the square support cover to rotate up and down. The movable support frame is arranged on the right side of the bottom of the square support cover, and the movable support frame can move left and right relative to the square support cover under the push of the auxiliary driving mechanism of the movable support frame. The two active roller shafts are distributed up and down on the movable support frame, and the driven roller shaft is opposite to the active roller shaft left and right. The roller shaft driving mechanism is used to drive the two active roller shafts to rotate synchronously, and the crushing mechanism is used to realize the crushing of the corn seedlings that emerge from between the active roller shaft and the driven roller shaft.

6. A corn seedling thinning auxiliary device according to claim 5, characterized in that: The crushing mechanism includes a second drive motor, a rotating shaft, and a steel wire rope. The second drive motor is arranged on the upper part of the square support cover. The rotating shaft is arranged inside the square support cover and the upper part of the rotating shaft is connected to the output shaft of the second drive motor. The bottom of the rotating shaft is close to the upper part of the active roller shaft. The two steel wire ropes are relatively arranged at the bottom of the rotating shaft. The battery provides power for the second drive motor.

7. A corn seedling thinning auxiliary device according to claim 6, characterized in that: The movable support frame includes a shaped frame, a first support plate, a first support rod, and a first spring. The two active roller shafts are arranged on the shaped frame to rotate up and down. The shaped frame is arranged on the first support plate, and the shaped frame can move left and right relative to the first support plate. The first support rod is fixedly arranged on the back of the first support plate and the first support rod is movably sleeved on the side wall of the square support cover. A limiting ring is fixedly arranged on the right end of the first support rod. The first spring is sleeved on the first support rod and the first spring is clamped between the side wall of the square support cover and the limiting ring. Two first guide rods located on both sides of the first support rod are arranged on the first support plate, and the first guide rods pass through the side wall of the square support cover; the roller shaft driving mechanism includes a third driving motor and a synchronous belt. The third driving motor is arranged on one side of the shaped frame, and the output shaft of the third driving motor is connected to one end of one of the active roller shafts. A synchronous wheel is arranged at the other end of each of the two active roller shafts. The synchronous belt is sleeved on the two synchronous wheels. The battery provides power for the third driving motor.

8. A corn seedling thinning auxiliary device according to claim 7, characterized in that Two second guide rods are fixedly arranged on the back side of the ]-shaped frame, and the two second guide rods are movably sleeved on the first support plate. A limit plate is arranged on the outer side of the second guide rod, and a second spring is sleeved on the second guide rod, and the second spring is clamped between the ]-shaped frame and the first support plate.

9. The corn thinning auxiliary device according to claim 7, characterized in that: The auxiliary driving mechanism of the movable support frame includes a second handle, a driving lever, and a lever support rod. The second handle is in the shape of a [ and is fixedly arranged on the outer side of the right side wall of the square support cover. The lever support rod is horizontally fixedly arranged on the left side wall of the second handle. The middle lower part of the driving lever is hingedly connected to the lever support rod. A long hole is arranged at the lower part of the driving lever, a through groove is arranged at the right end of the first support rod, and a hinge shaft is arranged in the through groove, and the hinge shaft is sleeved in the long hole.

10. The corn seedling thinning auxiliary device according to claim 7, characterized in that: A first guide plate is arranged below the two driven rollers, the first guide plate is arranged in an inclined state with the left side lower and the right side higher; a second guide plate is arranged on the right side of the first guide plate, the second guide plate is arranged in an inclined state with the left side higher and the right side lower; a plurality of first chip removal holes are arranged on the first guide plate and the second guide plate, and a seedling gap is reserved between the first guide plate and the second guide plate; a second chip removal hole corresponding to the steel wire rope is arranged on the front side wall and the rear side wall of the square support cover, and an exposed hole corresponding to the synchronous belt and the third drive motor is respectively arranged on the front side wall and the rear side wall of the square support cover, the synchronous belt and the third drive motor are exposed to the outside of the square support cover through the corresponding exposed holes, a first switch for controlling the operation of the first drive motor is arranged on the first handle, and a second switch for synchronously controlling the operation of the second drive motor and the third drive motor is arranged on the second handle.

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