Corn thinning auxiliary device

Abstract

The present invention provides a corn thinning auxiliary device, comprising a walking support mechanism, a lying plate, an isolation cover, and a seedling-pulling and crushing mechanism. The walking support mechanism is used to realize the walking and supporting of the lying plate, the lying plate can be moved up and down for adjustment and positioning, an observation hole is provided at one end of the lying plate, the isolation cover and the seedling-pulling and crushing mechanism are hung on the bottom of the lying plate by a first tension spring and a second tension spring respectively, 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 corn seedlings that need to be retained, and the seedling-pulling and crushing mechanism is used to realize the pulling out and crushing of corn seedlings that need to be pulled out. Manually lying on the lying plate to perform thinning operations greatly reduces the intensity of manual labor; 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 prevented from being pulled out synchronously, thereby improving the quality of thinning.

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 involves removing overcrowded or underdeveloped seedlings at a specific rate during the seedling stage to maintain healthy, uniform plants and create favorable conditions for growth and development. Thinning is typically performed when the seedlings have 3-4 true leaves.

[0003] In some economically backward areas, corn is still planted by manually digging holes. To improve 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 methods for thinning corn seedlings. One is manual thinning, which involves bending over or squatting on the ground and using manual screening to thin seedlings. However, thinning is labor-intensive due to the long hours of bending over or squatting. 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. This invention patent uses image recognition technology to identify specific corn seedlings and then controls the gripper on a robotic arm based on the image processing structure to perform the thinning operation. This device has a high degree of automation, but its structure is complex, making it inconvenient for subsequent inspection and maintenance. Furthermore, when the roots of two corn seedlings are very close, using the gripper on the robotic arm to directly pull out one of the seedlings can cause both seedlings to be pulled out simultaneously, thus affecting the quality of the 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 is used to press around the roots of the seedlings, so that the corn seedlings located 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 plate, 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 plate. The lying plate can be moved up and down for adjustment and positioning. An observation hole is provided at one end of the lying plate. The isolation cover and the seedling pulling and crushing mechanism are respectively hung on the bottom of the lying plate 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 corn seedlings that need to be retained, and the seedling pulling and crushing mechanism is used to realize the pulling and crushing of 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 side of the middle of the electric tricycle rear axle and the support shaft, and 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 drive motor on the electric tricycle rear axle, and a walking wheel is arranged at both ends of the electric tricycle rear axle and the support shaft.

[0008] Furthermore, a slide is provided on the left and right sides of the bottom of the lying board respectively, and a T-shaped slide groove is provided at the bottom of the slide. Both ends of the T-shaped slide groove are closed, and a T-shaped hanging rack is provided 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 driving mechanism, and a movable support frame auxiliary driving mechanism. The two driven roller shafts are arranged to rotate up and down on the left side of the bottom of the square support cover. 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 movable support frame auxiliary driving mechanism. 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 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] Furthermore, the movable support frame includes a [-shaped frame, a first support plate, a first support rod, and a first spring. The two active rollers are rotated up and down on the [-shaped frame]. 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 are arranged on the first support plate and are located on both sides of the first support rod, and the first guide rods pass through the side wall of the square support cover; the roller drive mechanism includes a third drive motor and a synchronous belt. The third drive motor is arranged on one side of the [-shaped frame], and the output shaft of the third drive motor is connected to one end of the active roller shaft. 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 drive 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 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 lower middle part of the driving lever is hingedly connected to the lever support rod. A long hole is provided at the lower part of the driving lever, a through groove is provided at the right end of the first support rod, and a hinge shaft is provided in the through groove. The hinge shaft is sleeved in the long hole.

[0015] Furthermore, a first guide plate is arranged below the two driven rollers, and the first guide plate is distributed 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, and the second guide plate is distributed 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 exposure 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, and the synchronous belt and the third drive motor are exposed to the outside of the square support cover through the corresponding exposure 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 process and manufacture. At the same time, the processing and manufacturing cost of the invention is low, and it is easy to promote and apply in areas with relatively backward economic conditions; when using the device to perform thinning operations, the operator lies completely on the lying board. Compared with manual operations that require bending or squatting, the lying method can greatly reduce the intensity of manual labor, and the manual movement is also driven by the walking support mechanism, which makes it convenient for the operator to use the device to perform long-term thinning operations, thereby improving the efficiency of thinning operations; 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 member, so that the operator can smoothly realize the flexible movement of the isolation cover and the seedling crushing mechanism, and then realize precise thinning; the lying board can be adjusted in height, so as to meet the thinning needs of different workers; 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 in the isolation cover can be effectively placed. The seedlings can be pulled out in one step, thereby improving the quality of thinning; the isolation cover body is made of transparent material, which makes it easy to place the seedlings close to the side wall of the isolation cover body when the seedlings are placed, so that the roots of the seedlings in the isolation cover body are protected when the seedlings are pulled out; 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 used directly 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 ensuring that the seedlings are pulled out smoothly; the first and second chip removal holes 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any 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 3This is a schematic diagram of the distribution of the isolation cover and the seedling-pulling and crushing mechanism under the lying plate;

[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] Figure 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 slide, 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 clearance, 415 second chip removal hole, 416 exposure hole, 421 driven roller shaft, 422 active roller shaft, 4231 shaped frame, 42311 second guide rod, 42312 second spring, 42313 limiting plate, 4232 first support plate, 42321 first guide rod, 4233 first support rod, 42331 limiting 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 embodiments described are only some preferred embodiments of the present invention, not all embodiments. Those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] The present invention provides a corn seedling thinning auxiliary device (such as Figure 1The invention also provides a plurality of steps for the lifting and lowering of the lifting platform 2, and a plurality of steps for the lifting and lowering of the lifting platform 2. The lifting and lowering of the lifting platform 2 are respectively used to lift the lifting platform 2 and the lifting platform 3. The lifting and lowering of the lifting platform 2 are respectively used to lift the lifting platform 2 and the lifting platform 3. The lifting and lowering of the lifting platform 2 are respectively used to lift the lifting platform 2 and the lifting platform 3. An observation hole 21 is provided at one end of the lying board 2. During the thinning operation, the worker's face is facing downward and placed in the observation hole 21, so that the worker can observe the bottom of the lying board 2, and then facilitate the thinning operation. In order to improve the comfort of the worker's face in the observation hole 21, a circle of sponge pad 211 is provided on the upper outer side of the observation hole 21. The isolation cover 3 and the seedling 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 crushing mechanism 4 are adjacent to the observation hole 21. The isolation cover 3 is used to isolate and protect the corn seedlings that need to be retained, and the seedling crushing mechanism 4 is used to pull out and crush the corn seedlings that need to be pulled out. The corn seedlings that need to be retained are effectively prevented from being pulled out together during the thinning process by utilizing the isolation function of the isolation cover 3; the corn seedlings that need to be pulled out are pulled out and crushed synchronously by the seedling pulling and crushing mechanism 4. The corresponding corn seedlings are pulled out, and the thinning operation is completed. The pulled out seedlings are crushed synchronously, so 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 crush the corresponding corn seedlings synchronously, thereby completing the thinning operation.

[0030] On the basis of the above embodiment, the walking support mechanism realizes the up and down adjustment and walking of the lying board 2 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 of the electric tricycle rear axle 11 and the support shaft, and a guide support rod 13 parallel to the adjusting screw 12 is respectively 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 set 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 set on the support seat and can only rotate but not move up and down is a conventional technical means in this mechanical field and is also known to those skilled in the art. Therefore, the specific connection method of 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 lying plate 2 is moved up and down by synchronously rotating the two adjusting screws 12. The jacks 14 are provided at both ends of the rear axle 11 and the supporting shaft of the electric tricycle, and when the first drive motor 111 is started, the rotation of the running wheels 14 on both sides of the rear axle 11 of the electric tricycle is realized, thereby realizing the vertical adjustment of the lying board 2. 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 a 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 seedlings, in order to improve the mobility of the isolation cover 3 and the seedling-pulling and crushing mechanism 4 so as to flexibly carry out thinning out seedlings under various circumstances, here, on the basis of the above embodiment, a slide 22 is respectively provided on the left and right sides of the bottom of the lying board 2, and a T-shaped chute is provided at the bottom of the slide 22. The two ends of the T-shaped chute are in a closed state, and a T-shaped hanging frame 221 is provided in the T-shaped chute. The T-shaped hanging frame 221 can move freely in the T-shaped chute. 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 bracket 221 is made of a round bar, 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 bracket 221. Specifically, a through hole is provided on the bottom vertical bar of the T-shaped hanging bracket 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 facilitates 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 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 is placed inside the corn seedlings to be retained. After the isolation cover body 31 is appropriately moved, the inner edge of the isolation cover body 31 can be fitted with the root of the corn seedlings, thereby using the edge of the isolation cover body 31 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 thinning out the corn seedlings, the edge of the isolation cover body 31 is used to press the corn seedlings, 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 workers to move the isolation cover body 31 by observation so that its internal edge fits the root of the corresponding corn seedling. The first handle 32 is fixedly provided 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 provided 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 drive mechanism, and a movable support frame auxiliary drive 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 shaft 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 drive 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 left and right. 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. After 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 degree of squeezing continues to increase, it can eventually be achieved. The corn seedlings are pulled out of the soil, thereby achieving thinning. In order to increase the friction between the active roller 422 and the diameter of the corn stalks, so as to improve the pulling-out effect of the seedlings, a number of protrusions or protrusions can be provided on the surface of the active roller 422. The crushing mechanism is used to crush the corn seedlings that emerge from between the active roller 422 and the driven roller 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 realize the rotation of the rotating shaft 432. 2 rotates at high speed, the bottom of the rotating shaft 432 is close to the upper part of the active roller shaft 422, and the two steel wire ropes 433 are relatively arranged at the bottom of the rotating shaft 432. The high-speed rotating steel wire rope 433 is located at the upper part of the active roller shaft 422 and the driven roller shaft 421. When the leaves or stems of the corn seedlings rush 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 wire rope 433, thereby achieving the crushing of the seedlings. In order to improve the crushing effect, the rotating shaft 432 is located on the right side of the inner part of the square support cover 41, so that the steel wire rope 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 utilizing the steel wire rope 432 to effectively hit and crush the corn seedlings.The battery provides power to the second drive 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 continuously 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 in the direction away from the driven roller shaft 421. When the first support plate 4232 presses on 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 are provided on the first support plate 4232, which are located on both sides of the first support rod 4233, and the first guide rod 42321 passes through the side wall of the square support cover 41. When the active roller shaft 422 needs to be continuously moved 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 left movement of the active roller shaft 422; the roller drive mechanism includes a third drive 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 realizes 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 of realizing that 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 provided 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 provided on the outer side of the second guide rod 42311; 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. The elasticity of the second spring 42312 ensures that 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 movable support frame auxiliary driving mechanism is as follows: the movable support frame auxiliary driving mechanism 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 fixed on the left side wall of the second handle 4251. The middle lower position of the driving lever 4252 is hingedly connected to the lever support rod 4253. A long hole 42521 is provided at the lower part of the driving lever 4252, and a hole 42521 is provided at the right end of the first support rod 4233. A through groove, 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 actual application, 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 set below the two driven roller shafts 421, and the first guide plate 411 is distributed in an inclined state with the left lower and the right higher. A second guide plate 412 is set to the right of the first guide plate 411, and the second guide plate 412 is distributed in an inclined state with the left higher and the right lower. A plurality of first chip removal holes 413 are provided 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 continues to lower, the corn seedlings continue to rise relative to the active roller 422. When the upper part of the corn seedlings reaches a level state with the steel wire rope 433, as the square support cover 41 continues to lower, the steel wire rope 433 hits and crushes 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 towards 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 makes it easy to achieve that the two ends of the driven roller 421 and the active roller 422 are 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 this device to perform corn thinning operations, first, adjust the direction of the lying board 2 according to the arrangement direction of a row of corn seedlings, so that the length direction of the lying board 2 is in the same direction as the direction of a row of corn seedlings, and then make the lying board 2 located directly above the corn seedlings; then the thinning worker lies directly on the lying board 2, and puts his face into the observation hole 21, and then, holds the first handle 32 with his left hand and the second handle 4251 with his right hand, and ensures that the right hand can synchronously press the upper part of the driving lever 4252. After completing the above-mentioned grip with both hands, 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 plate 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 plate 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 right hand pulls the upper part of the driving lever 4252, 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. In the process of 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 so that its inner side wall fits with the root and stem of the corn seedlings that need to be retained. 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 that need to be pulled out. 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 that need 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 conjunction with the accompanying drawings, details the preferred embodiments and examples of the present invention. However, the present invention is not limited to the above embodiments and examples. A person skilled in the art can make several improvements and modifications 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 thinning auxiliary device, characterized in that: The invention comprises a walking support mechanism, a lying plate, an isolation cover, and a seedling-pulling and crushing mechanism, wherein the walking support mechanism is used to realize the walking and support of the lying plate, the lying plate can be moved up and down for adjustment and positioning, an observation hole is provided at one end of the lying plate, the isolation cover and the seedling-pulling and crushing mechanism are respectively hung on the bottom of the lying plate 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 out and crushing of the corn seedlings that need to be pulled out; 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 respectively arranged on both sides of the adjusting screw. The two ends of the lying plate are respectively sleeved on the corresponding adjusting screw and the guide support rod, and the lying plate is threadedly matched with the adjusting screw. The battery provides power for the first drive motor on the rear axle of the electric tricycle. A walking wheel is arranged on both ends of the electric tricycle rear axle and the support shaft. 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 for rotation 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 The roller drive mechanism is opposite to the active roller shaft on the left and right, and is used to drive the two active roller shafts to rotate synchronously. The crushing mechanism is used to crush the corn seedlings that emerge from between the active roller shaft and the driven roller shaft; the movable support frame includes a 1-shaped frame, a first support plate, a first support rod, and a first spring. The two active roller shafts are arranged on the 1-shaped frame for vertical rotation. The 1-shaped frame is arranged on the first support plate, and the 1-shaped frame can move left and right relative to the first support plate. The first support rod is fixedly arranged on the back side 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 provided at 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 are provided on the first support plate and are located on both sides of the first support rod, and the first guide rods pass through the side wall of the square support cover; the roller drive mechanism includes a third drive motor and a synchronous belt, the third drive motor is provided on one side of the]-shaped frame, and the output shaft of the third drive motor is connected to one end of the active roller shaft, and a synchronous wheel is provided at the other end of the two active roller shafts. The synchronous belt is sleeved on the two synchronous wheels, and the battery provides power for the third drive motor; the auxiliary drive 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 position of the driving lever is hingedly connected to the lever support rod, the lower part of the driving lever is provided with a long hole, a through slot is provided at the right end of the first support rod, a hinge shaft is provided in the through slot, and the hinge shaft is sleeved in the long hole; 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 arranged opposite to each other at the bottom of the rotating shaft. The battery provides power for the second drive motor.

2. A corn thinning auxiliary device according to claim 1, characterized in that A slide is provided on the left and right sides of the bottom of the lying board respectively, and a T-shaped slide groove is provided at the bottom of the slide. Both ends of the T-shaped slide groove are closed, and a T-shaped hanging rack is provided 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.

3. A corn thinning auxiliary device according to claim 2, 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.

4. A corn thinning auxiliary device according to claim 3, characterized in that: Two second guide rods are fixedly provided on the back side of the 3D 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 3D frame and the first support plate.

5. The corn thinning auxiliary device according to claim 3, characterized in that: A first guide plate is arranged below the two driven rollers, and the first guide plate is distributed 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, and the second guide plate is distributed 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 exposure 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, and the synchronous belt and the third drive motor are exposed to the outside of the square support cover through the corresponding exposure 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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