A rice seedling bed leveling device

Abstract

The present invention relates to the field of agricultural production equipment, and specifically to a rice seedling bed leveling device, comprising a traction frame, an arc-shaped cover is fixedly installed on the left lower part of the traction frame, a harrowing roller is rotatably arranged inside the arc-shaped cover, a pre-leveling mechanism for pre-leveling the seedling bed is arranged in the middle of the lower side of the traction frame, and a leveling mechanism is arranged on the right lower side of the traction frame. The present invention adopts a supporting plate to separate the upper soil and the lower soil of the seedling bed, so that when the rolling component and the tamping component compact the upper soil of the seedling bed, the soil of the lower layer of the seedling bed can still remain loose, thereby ensuring the effect of the seedling bed being firm and the lower loose after leveling, thereby ensuring the cultivation effect of the rice seedlings, and compacting the upper soil of the seedling bed by combining the rolling component and the tamping component, thereby increasing the compacting effect of the upper soil of the seedling bed, thereby improving the growth environment of the rice seedlings.

Description

Technical Field

[0001] The invention relates to the field of agricultural production equipment, in particular to a rice seedling bed leveling device. Background Art

[0002] A nursery is a place used to raise plant seedlings. In agriculture, a nursery is usually a specific area used to sow seeds or transplant seedlings so that they can grow under suitable conditions, while a rice nursery is used to raise strong rice seedlings for subsequent transplanting into the field.

[0003] Uneven rice seedling beds may lead to uneven water distribution and affect the growth of seedlings. Therefore, before cultivating rice, the rice seedling beds need to be leveled. The flat surface of the rice seedling beds after leveling will help the rice seedlings grow evenly. Leveling the rice seedling beds is an important step in optimizing the rice growth environment.

[0004] When leveling the rice seedling bed, it is necessary to make the top solid and the bottom loose. Solidifying the top means that when leveling the seedling bed, the soil surface should be compacted to make it more compact, which helps to maintain soil moisture, reduce water evaporation, and improve the growth environment of the seedlings; loosening the bottom means that when leveling the seedling bed, the bottom of the soil should be loosened to increase aeration, which is conducive to the roots of the seedlings to take root and absorb nutrients and water.

[0005] At present, when leveling the rice seedling beds, seedling bed leveling machines are often used. When using the existing seedling bed leveling machines, the soil is usually turned over and crushed to soften the soil as a whole, and then the upper soil is leveled by rolling or tamping, so that the seedling bed is solid on the top and loose on the bottom.

[0006] However, when the upper soil is leveled simply by rolling or tamping, the upper soil tends to press down the lower soil, thereby causing the lower soil to be compacted together, resulting in a poor effect of loosening the seedling bed, which in turn has an adverse effect on the cultivation of rice. In addition, when the existing leveling machinery levels the soil by rolling, since the mass of the rolling roller remains unchanged, the rolling roller can only apply the same rolling pressure to areas with different degrees of soil looseness, resulting in inconsistent looseness of the upper soil, which in turn leads to uneven growth of rice seedlings. For the leveling machinery that levels the soil by tamping, it is difficult for its tamping hammer to tamp the soil seamlessly, and the tamping position is prone to overlapping and missing, which also makes the looseness of the upper soil inconsistent, affecting the uniform growth of rice seedlings. Summary of the invention

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a rice seedling bed leveling device, including a traction frame, an arc cover is fixedly installed on the lower left part of the traction frame, a harrowing roller is rotatably arranged inside the arc cover, a pre-leveling mechanism for pre-leveling the seedling bed is arranged on the lower middle part of the traction frame, and a leveling mechanism is arranged on the lower right part of the traction frame.

[0008] The pre-adjustment mechanism includes an adjustment plate which is slidably arranged on the lower side of the middle part of the traction frame, a threaded rod is rotatably arranged on the adjustment plate, the threaded rod is threadedly connected to the traction frame, a shaking plate is slidably arranged at the lower part of the adjustment plate, and scraping plates fixedly connected to the shaking plate are arranged at equal intervals along the front and rear directions at the lower part of the shaking plate, a driving component for driving the shaking plate to move is arranged on the adjustment plate, and a smoothing component for smoothing the seedbed is arranged on the shaking plate.

[0009] The leveling mechanism includes a guide column which is slidably arranged on the right part of the traction frame, the guide column is arranged in a rectangular shape, a position plate is fixedly installed on the lower part of the guide column, a supporting plate is arranged on the lower part of the position plate through an angle adjustment component, a C-shaped frame is slidably arranged on the lower right side of the traction frame, the position plate is fixedly connected to the C-shaped frame, a rolling component for rolling the upper layer of soil on the seedling bed is arranged on the horizontal section of the C-shaped frame, a control component for controlling the downward pressure of the rolling component is arranged on the supporting plate, a limiting component for limiting the position plate is arranged on the upper right side of the traction frame, and a tamping component for seamlessly tamping the upper layer of soil on the seedling bed is arranged on the lower right side of the C-shaped frame.

[0010] Preferably, the driving assembly includes a rotating disk rotatably arranged on an adjusting plate, a connecting plate is hinged at an eccentric position of the rotating disk, an end of the connecting plate away from the rotating disk is hinged to a shaking plate, an actuator motor is fixedly installed on the left side of the adjusting plate, and an output shaft of the actuator motor is fixedly connected to the rotating disk.

[0011] Preferably, the smoothing assembly includes a sliding frame which slides up and down and is arranged between two adjacent scraper plates. The front and rear sides of the sliding frame are inclined structures, and the middle part of the sliding frame is a horizontal plate structure. A smoothing disk is rotatably arranged in the middle part of the sliding frame, and an active column is fixedly installed on the upper side of the smoothing disk. Pullies are rotatably arranged on the lower side of the shaking plate and located between two adjacent scraper plates. All the pulleys are connected to each other by belts, and the pulleys are slidably connected to the outside of the active columns at corresponding positions. A striking part for striking the seedling bed is provided on the sliding frame, and a power part for driving the striking part and the smoothing disk is provided on the shaking plate.

[0012] Preferably, the slapping part includes a driven ring fixedly mounted on the upper part of the sliding frame, the driven ring is located at the coaxial lower part of the pulley at the corresponding position, the driven ring does not contact the active column, the upper side surface of the driven ring and the lower side surface of the pulley are both provided with raised blocks at equal intervals along their circumference, inclined surfaces are provided on both sides of the raised blocks, and a tension spring is provided between the sliding frame and the shaking plate.

[0013] Preferably, the power unit includes a rotating sleeve rotatably arranged on the upper side of the shaking plate, the rotating sleeve is slidably connected to the active column at the corresponding position up and down, a driving gear is fixedly installed on the upper end of the rotating sleeve, and a fixed rack meshing with the driving gear is fixedly installed at the position corresponding to the active gear at the lower part of the adjustment plate.

[0014] Preferably, the angle adjustment assembly includes a moving block slidably arranged on the upper side of the position plate, a straight waist-shaped groove is opened on the moving block, T-shaped plates are rotatably arranged on the front and rear sides of the position plate, a connecting column is fixedly installed between the upper parts of the two vertical sections of the T-shaped plates, the connecting column cooperates with the groove of the moving block, push-pull plates are hinged at the lower parts of the left and right ends of the transverse section of the T-shaped plate, the lower end of the push-pull plate is hinged on the supporting plate, an electric push rod is fixedly installed on the right side of the position plate, and the telescopic section of the electric push rod is fixedly connected to the moving block.

[0015] Preferably, the limit assembly includes a movable plate that is slidable left and right on the upper side of the traction frame, the movable plate is connected to the movable block in an up and down sliding manner, a No. 1 insertion plate is provided on the left side of the movable plate for sliding left and right, the left side of the No. 1 insertion plate is provided with an inclined surface that gradually tilts downward from right to left, a No. 2 insertion plate is provided on the right side of the movable plate for sliding left and right, the right side of the No. 2 insertion plate is provided with an inclined surface that gradually tilts upward from left to right, compression springs are provided between the No. 1 insertion plate, the No. 2 insertion plate and the movable plate, the No. 1 insertion plate and the No. 2 insertion plate are both located between the guide posts on the left and right sides, and the guide posts are provided with notch grooves at equal intervals in the up and down directions near the movable plate.

[0016] Preferably, the rolling assembly includes connecting parts arranged on the horizontal section of the C-shaped frame at equal intervals along the front-to-back direction, the connecting parts are slidably connected to the C-shaped frame up and down, the upper end of the connecting parts is rotatably connected to the rolling cylinder, and the lower part of the horizontal section of the C-shaped frame is fixedly installed with hydraulic push rods at equal intervals along the front-to-back direction, and the lower end of the hydraulic push rods is rotatably connected to the rolling cylinder.

[0017] Preferably, the control component includes resistance blocks arranged at equal intervals inside the support plate along the front-to-back direction, the positions of the resistance blocks correspond one-to-one to the rolling cylinders, a coil spring is arranged between the right side of the resistance block and the support plate, a stroke detection column is arranged on the front part of the resistance block for sliding back and forth, a return spring is arranged between the stroke detection column and the resistance block, the stroke detection column controls the hydraulic push rod by electronic control, and the positions inside the support plate corresponding to the stroke detection columns are all provided with inclined surfaces which gradually tilt backward from left to right.

[0018] Preferably, the ramming assembly includes a rotating rod rotatably arranged at the lower right side of the C-shaped frame via a bracket rod, a waist-shaped ramming plate is inserted and connected to the middle of the rotating rod, a waist-shaped groove is provided inside the waist-shaped ramming plate, the waist-shaped ramming plate cooperates with the groove of the rotating rod, a rotating gear is fixedly installed at the front of the rotating rod, a semi-toothed ring is fixedly installed symmetrically on the front side of the waist-shaped ramming plate, an anti-skid wheel is rotatably arranged at the front end of the rotating rod, hemispherical grooves are provided on the inner side surface of the anti-skid wheel at equal intervals along its circumference, and torsion steel balls sliding radially therefrom are provided at equal intervals along its circumference at the front end of the rotating rod, the number of torsion steel balls is equal to that of hemispherical grooves, and a pushing spring is provided between the torsion steel balls and the rotating rod.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention uses a supporting plate to separate the upper soil and the lower soil of the seedbed, so that when the rolling component and the tamping component compact the upper soil of the seedbed, the soil in the lower layer of the seedbed can still remain loose, thereby ensuring the effect of compacting the top and loosening the bottom of the seedbed after leveling, thereby ensuring the cultivation effect of rice seedlings, and compacting the upper soil of the seedbed by combining the rolling component and the tamping component, thereby increasing the compacting effect and improving the growth environment of the rice seedlings.

[0021] 2. The present invention adopts a control component to detect the looseness of the seedbed soil in real time, so that the control component can control the rolling component in real time to apply different degrees of rolling pressure to soils with different degrees of looseness, thereby rolling the upper soils with different degrees of looseness to a consistent degree of compactness, thereby ensuring the uniform growth of rice seedlings. The drive component drives the scraper plate to move back and forth, so that the scraper plate can pre-scrape and flatten the turned soil surface, avoiding uneven soil distribution when the rolling component compacts the uneven soil, further ensuring the uniform growth of rice seedlings.

[0022] 3. The present invention uses a tamping assembly to seamlessly tamp the upper soil of the seedbed, thereby avoiding overlapping and missing tamping positions. While further increasing the compaction effect of the upper soil of the seedbed, the compaction degree of the upper soil is ensured to be consistent, thereby further ensuring the uniform growth of the rice seedlings.

[0023] Fourth, the present invention adopts the cooperation of the angle adjustment component and the limit component to automatically control the position of the support plate, so that the support plate can be located at different depths of the soil during leveling, thereby adapting to the leveling requirements of different seedbeds.

[0024] 5. The present invention adopts a leveling component to further level the upper layer of soil after the scraper blade scrapes. By rotating the leveling component and vibrating up and down, the upper layer of soil can be pre-leveled, thereby increasing the leveling effect of the subsequent leveling mechanism on the soil, and further ensuring the healthy growth of rice seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a partial structural schematic diagram of the traction frame and the pre-alignment mechanism in the present invention.

[0028] Figure 3 It is a fracture diagram of the pre-adjustment mechanism of the present invention after the drive assembly is removed.

[0029] Figure 4 It is a structural schematic diagram of the sliding frame, the smoothing plate, the driving column, the pulley, the slapping part and the driving gear in the present invention.

[0030] Figure 5 It is a partial structural schematic diagram of the traction frame and the leveling mechanism in the present invention.

[0031] Figure 6 It is a partial front view of the traction frame, guide column, position plate, limit assembly, electric push rod and moving block in the present invention.

[0032] Figure 7 It is a structural schematic diagram of the position plate, the supporting plate and the angle adjustment component in the present invention.

[0033] Figure 8 It is a partial cross-sectional view of the support plate and the control assembly in the present invention.

[0034] Fig. 9 It is a cross-sectional view of the U-shaped frame and the rolling assembly in the present invention.

[0035] Fig.10 It is a partial cross-sectional view of the ramming assembly in the present invention.

[0036] In the figure: 1, traction frame; 2, pre-leveling mechanism; 3, leveling mechanism; 11, arc cover; 12, harrowing roller; 21, adjustment plate; 22, shaking plate; 23, scraper plate; 24, driving assembly; 25, leveling assembly; 31, guide column; 32, position plate; 33, angle adjustment assembly; 34, supporting plate; 35, U-shaped frame; 36, rolling assembly; 37, control assembly; 38, limit assembly; 39, tamping assembly; 211, threaded rod; 241, rotating disk; 242, connecting plate; 243, executive motor; 251, sliding frame; 252, leveling disk; 253, active column; 254, pulley; 255, slapping part; 256, power part; 331 , moving block; 332, T-shaped plate; 333, connecting column; 334, push-pull plate; 335, electric push rod; 361, connecting piece; 362, rolling cylinder; 363, hydraulic push rod; 371, resistance block; 372, stroke detection column; 381, moving plate; 382, ​​No. 1 insertion plate; 383, No. 2 insertion plate; 384, notch groove; 390, bracket rod; 391, rotating rod; 392, waist-shaped ramming plate; 393, rotating gear; 394, half-toothed ring; 395, anti-skid wheel; 396, torque steel ball; 2551, driven ring; 2552, raised block; 2561, rotating sleeve; 2562, driving gear; 2563, fixed rack. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0038] See also Figure 1 , Figure 2 and Figure 5 A rice seedling bed leveling device comprises a traction frame 1, an arc cover 11 is fixedly installed on the lower left part of the traction frame 1, a harrowing roller 12 is rotatably arranged inside the arc cover 11, a pre-leveling mechanism 2 for pre-leveling the seedling bed is arranged on the lower middle part of the traction frame 1, and a leveling mechanism 3 is arranged on the lower right part of the traction frame 1.

[0039] When the rice seedling bed needs to be leveled, the operator first fixes the left part of the traction frame 1 to the walking machine, then starts the walking machine to drive the traction frame 1 to move to the seedling bed, and then connects the harrowing roller 12 to the power source of the walking machine, so that the walking machine drives the harrowing roller 12 to rotate. At the same time, the operator operates the walking machine to move to the left, so that the harrowing roller 12 turns over and loosens the soil of the seedling bed.

[0040] When the harrowing roller 12 turns the soil, the pre-leveling mechanism 2 simultaneously scrapes and smoothes the soil on the upper layer of the seedling bed, thereby pre-leveling the seedling bed. Subsequently, the leveling mechanism 3 compacts and levels the soil on the upper layer of the seedling bed, so that the soil of the seedling bed is firm on the top and loose on the bottom.

[0041] It should be noted that the walking machine may be a tractor or the like.

[0042] See also Figure 1 and Figure 2 The pre-adjustment mechanism 2 includes an adjustment plate 21 which is slidably arranged on the lower side of the middle part of the traction frame 1, and a threaded rod 211 is rotatably arranged on the adjustment plate 21. The threaded rod 211 is threadedly connected to the traction frame 1, and a shaking plate 22 is slidably arranged at the lower part of the adjustment plate 21, and a scraper plate 23 fixedly connected to the shaking plate 22 is arranged at equal intervals along the front and rear directions.

[0043] When the seedbed needs to be leveled, the operator rotates the threaded rod 211 in advance according to the height of the upper soil of the seedbed, so that the threaded rod 211 drives the adjustment plate 21 to adjust its position up and down, and the adjustment plate 21 drives the lower side of the scraper plate 23 to maintain a certain distance from the soil through the shaking plate 22.

[0044] Continue reading Figure 1 and Figure 2 A driving assembly 24 for driving the shaking plate 22 to move is provided on the adjusting plate 21, and the driving assembly 24 includes a rotating disk 241 rotatably arranged on the adjusting plate 21, and a connecting plate 242 is hinged at an eccentric position of the rotating disk 241, and one end of the connecting plate 242 away from the rotating disk 241 is hinged to the shaking plate 22, and an actuator motor 243 is fixedly installed on the left side of the adjusting plate 21, and the output shaft of the actuator motor 243 is fixedly connected to the rotating disk 241.

[0045] When the traction frame 1 moves on the seedbed, the execution motor 243 is started to drive the rotating disk 241 to rotate. When the rotating disk 241 rotates, the connecting plate 242 pushes and pulls the shaking plate 22 back and forth, so that the shaking plate 22 drives the scraper plate 23 to move back and forth in the front and rear directions, so that the scraper plate 23 scrapes the soil from the high place to the low place, thereby making the upper soil level consistent.

[0046] See also Figure 2 , Figure 3 and Figure 4A smoothing component 25 for smoothing the seedbed is provided on the shaking plate 22. The smoothing component 25 includes a sliding frame 251 that is slidably arranged between two adjacent scraper plates 23. The front and rear sides of the sliding frame 251 are inclined structures. The middle part of the sliding frame 251 is a horizontal plate structure. A smoothing disk 252 is rotatably arranged in the middle part of the sliding frame 251. An active column 253 is fixedly installed on the upper side of the smoothing disk 252. Pulleys 254 are rotatably arranged on the lower side of the shaking plate 22 and located between two adjacent scraper plates 23. All pulleys 254 are connected to each other through belts, and the pulleys 254 are slidably connected to the outer side of the active column 253 at the corresponding position.

[0047] Continue reading Figure 2 , Figure 3 and Figure 4 The sliding frame 251 is provided with a striking part 255 for striking the seedling bed. The striking part 255 includes a driven ring 2551 fixedly mounted on the upper part of the sliding frame 251. The driven ring 2551 is located at the coaxial lower part of the pulley 254 at the corresponding position. The driven ring 2551 does not contact the active column 253. The upper side surface of the driven ring 2551 and the lower side surface of the pulley 254 are both provided with raised blocks 2552 at equal intervals along their circumferential direction. Inclined surfaces are provided on both sides of the raised blocks 2552. A tension spring is provided between the sliding frame 251 and the shaking plate 22.

[0048] Continue reading Figure 2 , Figure 3 and Figure 4 The shaking plate 22 is provided with a power unit 256 for driving the slapping unit 255 and the smoothing plate 252. The power unit 256 includes a rotating sleeve 2561 rotatably arranged on the upper side of the shaking plate 22. The rotating sleeve 2561 is slidably connected with the active column 253 at the corresponding position up and down. A driving gear 2562 is fixedly installed on the upper end of the rotating sleeve 2561, and a fixed rack 2563 meshing with the driving gear 2562 is fixedly installed at the lower part of the adjusting plate 21 at a position corresponding to the driving gear 2562.

[0049] When the shaking plate 22 starts to move back and forth, the shaking plate 22 drives the rotating sleeve 2561 to move back and forth synchronously, and the rotating sleeve 2561 drives the driving gear 2562 to move back and forth along the fixed rack 2563, so that the driving gear 2562 rotates back and forth, and the driving gear 2562 drives the corresponding driving column 253 to rotate synchronously through the rotating sleeve 2561, and the driving column 253 drives the pulley 254 at the corresponding position to rotate. Since all the pulleys 254 are connected to each other by belts, all the pulleys 254 rotate synchronously, so that all the driving columns 253 rotate synchronously, and the driving column 253 drives the smoothing disk 252 to rotate, and the rotating smoothing disk 252 can smooth the scraped soil, thereby making the soil further leveled.

[0050] When the pulley 254 rotates, the pulley 254 drives the raised block 2552 thereon to rotate synchronously. In the initial state, the tension spring pulls the sliding frame 251 upward, so that the sliding frame 251 drives the smoothing disk 252 to move upward. At this time, the smoothing disk 252 does not contact the soil. When the pulley 254 drives the raised block 2552 thereon to contact the raised block 2552 on the driven ring 2551, the pulley 254 pushes the driven ring 2551 downward through the raised block 2552, and the driven ring 2551 drives the smoothing disk 252 to move downward synchronously through the sliding frame 251, so that the smoothing disk 252 contacts the soil. Through the continuous rotation of the pulley 254, the pulley 254 intermittently pushes the smoothing disk 252 downward, so that the smoothing disk 252 can not only smooth the soil, but also vibrate the soil, thereby increasing the smoothing effect of the soil.

[0051] See also Figure 1 and Figure 5 The leveling mechanism 3 includes a guide column 31 which is slidably arranged on the right part of the traction frame 1, and the guide column 31 is arranged in a rectangular shape. A position plate 32 is fixedly installed at the lower part of the guide column 31. A supporting plate 34 is arranged at the lower part of the position plate 32 through an angle adjustment component 33. A C-shaped frame 35 is slidably arranged on the lower side of the right part of the traction frame 1, and the position plate 32 is fixedly connected to the C-shaped frame 35. A rolling component 36 for rolling the upper soil of the seedling bed is arranged on the horizontal section of the C-shaped frame 35.

[0052] See also Figure 1 , Figure 5 , Figure 6 and Figure 7 The angle adjustment component 33 includes a moving block 331 which is slidably arranged on the upper side of the position plate 32. A straight waist-shaped groove is opened on the moving block 331. T-shaped plates 332 are rotatably arranged on the front and rear sides of the position plate 32. A connecting column 333 is fixedly installed between the upper parts of the vertical sections of the two T-shaped plates 332. The connecting column 333 cooperates with the notch of the moving block 331. Push-pull plates 334 are hinged at the lower parts of the left and right ends of the transverse section of the T-shaped plate 332. The lower end of the push-pull plate 334 is hinged on the supporting plate 34. An electric push rod 335 is fixedly installed on the right side of the position plate 32. The telescopic section of the electric push rod 335 is fixedly connected to the moving block 331.

[0053] See also Figure 5 and Fig. 9 The rolling assembly 36 includes a connecting piece 361 which is arranged on the horizontal section of the C-shaped frame 35 at equal intervals along the front-to-back direction. The connecting piece 361 is slidably connected to the C-shaped frame 35 up and down. The upper end of the connecting piece 361 is rotatably connected to a rolling cylinder 362. A hydraulic push rod 363 is fixedly installed at the lower part of the horizontal section of the C-shaped frame 35 at equal intervals along the front-to-back direction. The lower end of the hydraulic push rod 363 is rotatably connected to the rolling cylinder 362.

[0054] See also Figure 5 , Figure 6 and Figure 7 A limiting assembly 38 for limiting the position plate 32 is provided on the upper right side of the traction frame 1, and the limiting assembly 38 includes a movable plate 381 slidably arranged on the upper side of the traction frame 1, and the movable plate 381 is slidably connected with the movable block 331 up and down, and a No. 1 insertion plate 382 is slidably arranged on the left side of the movable plate 381, and a slope gradually tilted downward from right to left is provided on the left side of the No. 1 insertion plate 382, ​​and a No. 2 insertion plate 383 is slidably arranged on the right side of the movable plate 381, and a slope gradually tilted upward from left to right is provided on the right side of the No. 2 insertion plate 383, and compression springs are provided between the No. 1 insertion plate 382, ​​the No. 2 insertion plate 383 and the movable plate 381, and the No. 1 insertion plate 382 and the No. 2 insertion plate 383 are both located between the guide posts 31 on the left and right sides, and the guide posts 31 are close to the movable plate 381 and are provided with notch grooves 384 at equal intervals in the up and down directions.

[0055] When the traction frame 1 starts to move, the telescopic section of the electric push rod 335 is extended, so that the electric push rod 335 drives the moving block 331 to move to the left, and the moving block 331 simultaneously pushes the connecting column 333 to the left. When the connecting column 333 moves to the left, it moves downward along the straight waist groove of the moving block 331, so that the connecting column 333 drives the T-shaped plate 332 to rotate to the left, and then the lateral section of the T-shaped plate 332 is lower on the left and higher on the right. The T-shaped plate 332 drives the supporting plate 34 to be in a posture of lower on the left and higher on the right through the push-pull plate 334, so that the left side of the supporting plate 34 swings downward to be inserted into the soil.

[0056] When the moving block 331 is in the initial position, the moving block 331 drives the moving plate 381 to be in the middle position between the left and right guide columns 31. At this time, the No. 1 insertion plate 382 is inserted into the notch groove 384 of the left guide column 31, and the No. 2 insertion plate 383 is inserted into the notch groove 384 of the right guide column 31, so that the No. 1 insertion plate 382 blocks the left guide column 31 from moving upward, and the No. 2 insertion plate 383 blocks the right guide column 31 from moving downward. Since the guide columns 31 are fixedly connected to the position plate 32, all the guide columns 31 can only move synchronously, so that the position of the guide columns 31 in the initial state is fixed.

[0057] When the moving block 331 moves to the left, the moving block 331 drives the moving plate 381 to move to the left synchronously. The moving plate 381 drives the second insertion plate 383 to withdraw from the notch groove 384 of the right guide column 31 through the compression spring on the right, so that the second insertion plate 383 does not block the downward movement of the guide column 31. At the same time, the moving plate 381 compresses the compression spring on the left, so that the number one insertion plate 382 is still inserted into the notch groove 384 of the left guide column 31.

[0058] When the left side of the supporting plate 34 extends into the soil, the traction frame 1 drives the supporting plate 34 to move synchronously through the guide column 31, the position plate 32, the T-shaped plate 332, and the push-pull plate 334 in sequence, so that the supporting plate 34 gradually moves deeper into the soil. At the same time, the supporting plate 34 drives the position plate 32 to move downward through the push-pull plate 334, and the position plate 32 drives the guide column 31 to move downward synchronously.

[0059] When the guide column 31 moves downward, the guide column 31 on the left side contacts the inclined surface of the No. 1 insertion plate 382 through the edge of the notch groove 384 thereon, so that the guide column 31 on the left side pushes the No. 1 insertion plate 382 to the right. When the next notch groove 384 moves to the position corresponding to the No. 1 insertion plate 382, ​​the No. 1 insertion plate 382 is inserted into the notch groove 384 at the corresponding position again under the push of the compression spring on the left side, so that the No. 1 insertion plate 382 can still block the guide column 31 from moving upward through the horizontal section thereon, so that the support plate 34 can only move in one direction downward.

[0060] When the position plate 32 moves downward, the position plate 32 drives the hydraulic push rod 363 to move downward synchronously through the U-shaped frame 35, and the hydraulic push rod 363 drives the rolling cylinder 362 to move downward synchronously. When the lower side of the rolling cylinder 362 contacts the soil, the telescopic section of the electric push rod 335 is retracted to the initial state, so that the support plate 34 returns to a horizontal state. At the same time, the No. 1 insertion plate 382 and the No. 2 insertion plate 383 are both inserted into the notch groove 384 of the guide column 31, and the height position of the support plate 34 is locked. At this time, the soil on the upper layer of the seedling bed and the soil on the lower layer are separated by the support plate 34.

[0061] See also Figure 5 , Figure 7 , Figure 8 and Fig. 9 A control component 37 for controlling the downward pressure of the rolling component 36 is provided on the support plate 34. The control component 37 includes resistance blocks 371 arranged at equal intervals inside the support plate 34 along the front and rear directions. The positions of the resistance blocks 371 correspond one-to-one to the rolling cylinders 362. A coil spring is provided between the right side of the resistance block 371 and the support plate 34. A stroke detection column 372 is provided at the front part of the resistance block 371 for sliding back and forth. A return spring is provided between the stroke detection column 372 and the resistance block 371. The stroke detection column 372 controls the hydraulic push rod 363 by electric control. The positions inside the support plate 34 corresponding to the stroke detection column 372 are all provided with inclined surfaces which gradually tilt backward from left to right.

[0062] When the supporting plate 34 is located inside the soil, the supporting plate 34 continues to move driven by the traction frame 1, so that the supporting plate 34 drives the resistance block 371 to move synchronously through the spiral spring. The resistance block 371 is hindered by the soil when moving, so that the resistance block 371 moves to the right relative to the supporting plate 34 under the reaction force of the soil. When the soil is relatively compact, the reaction force of the soil on the resistance block 371 becomes larger, so that the distance that the resistance block 371 moves to the right relative to the supporting plate 34 becomes longer, and vice versa.

[0063] The front part of the stroke detection column 372 is always pressed against the inclined surface inside the support plate 34 under the push of the return spring force. When the resistance block 371 moves to the right relative to the support plate 34, the resistance block 371 drives the stroke detection column 372 to move on the inclined surface inside the support plate 34, so that the inclined surface inside the support plate 34 pushes the stroke detection column 372 backward. When the moving stroke of the stroke detection column 372 increases, the extension distance of the telescopic section of the hydraulic push rod 363 directly above the stroke detection column 372 is reduced by electronic control, so that the hydraulic push rod 363 drives the rolling cylinder 362 at the corresponding position to move upward, thereby reducing the rolling pressure on the upper soil.

[0064] It should be noted that a distance sensor for detecting the displacement distance of the stroke detection column 372 is arranged inside the resistance block 371, and a controller for controlling the telescopic amount of the telescopic section of the hydraulic push rod 363 is arranged on the U-shaped frame 35. The signal of the distance sensor is transmitted to the controller wirelessly, and the distance sensor and the controller are not shown in the figure.

[0065] The specific electronic control logic is: when the backward displacement of the stroke detection column 372 increases, it is judged that the soil is in a compact state, and the extension distance of the telescopic section of the hydraulic push rod 363 directly above it is reduced, thereby reducing the rolling pressure of the rolling cylinder 362 on the upper soil; when the backward displacement of the stroke detection column 372 decreases, it is judged that the soil is in a loose state, and the extension distance of the telescopic section of the hydraulic push rod 363 directly above it is increased, thereby increasing the rolling pressure of the rolling cylinder 362 on the upper soil.

[0066] See also Figure 1 , Figure 5 , Figure 6 , Figure 7 and Fig.10The lower right side of the U-shaped frame 35 is provided with a tamping assembly 39 for seamlessly tamping the upper soil of the seedling bed. The tamping assembly 39 includes a rotating rod 391 which is arranged at the lower right side of the supporting rod 390 through the supporting rod 390. A waist-shaped tamping plate 392 is inserted and connected in the middle of the rotating rod 391. A waist-shaped groove is provided inside the waist-shaped tamping plate 392. The waist-shaped tamping plate 392 cooperates with the notch of the rotating rod 391. A rotating gear 392 is fixedly installed at the front of the rotating rod 391. 93. The front side of the waist-shaped ramming plate 392 is symmetrically and fixedly installed with a semi-toothed ring 394. The front end of the rotating rod 391 is rotatably provided with an anti-skid wheel 395. The inner side surface of the anti-skid wheel 395 is provided with hemispherical grooves at equal intervals along its circumference. The front end of the rotating rod 391 is provided with torsion steel balls 396 that slide radially along its circumference at equal intervals. The number of torsion steel balls 396 is equal to the number of hemispherical grooves. A pushing spring is provided between the torsion steel balls 396 and the rotating rod 391.

[0067] In the initial state, the torsion steel ball 396 is pushed by the push spring to abut against the hemispherical groove of the anti-skid wheel 395, so that the anti-skid wheel 395 and the rotating rod 391 can rotate synchronously. In the initial state, the rotating rod 391 is located at the right part of the waist-shaped ramming plate 392.

[0068] When the lower side of the rolling cylinder 362 contacts the soil, the U-shaped frame 35 drives the anti-skid wheel 395 to move downward until it contacts the soil through the rotating rod 391, and at the same time, the rotating rod 391 drives the flat side of the waist-shaped tamping plate 392 to rest against the soil. When the traction frame 1 continues to move, the traction frame 1 drives the rotating rod 391 to move synchronously, and the rotating rod 391 drives the anti-skid wheel 395 thereon to move along the soil, so that the anti-skid wheel 395 rotates, and the anti-skid wheel 395 drives the rotating rod 391 to rotate synchronously through the torsion steel ball 396, and at the same time, the rotating rotating rod 391 moves along the waist-shaped groove of the waist-shaped tamping plate 392.

[0069] When the rotating rod 391 drives the rotating gear 393 to move to engage with the half-toothed ring 394 on the left, the half-toothed ring 394 rotates synchronously with the rotating gear 393, so that the rotating rod 391 drives the waist-shaped tamping plate 392 to rotate 180°, so that the waist-shaped tamping plate 392 tamps the upper soil. When the waist-shaped tamping plate 392 rotates, the arc surface on it is in continuous contact with the soil, so that the arc surface of the waist-shaped tamping plate 392 can roll the soil.

[0070] When the waist-shaped tamping plate 392 rotates 180°, the rotating rod 391 is located on the right side of the waist-shaped tamping plate 392, and then the traction frame 1 drives the rotating rod 391 to move to the left, so that the rotating rod 391 drives the rotating gear 393 to disengage from the half-toothed ring 394 on the right, and then the rotating gear 393 engages with the half-toothed ring 394 on the left again, thereby allowing the waist-shaped tamping plate 392 to continuously tamp the upper soil.

[0071] It should be noted that the diameter of the anti-skid wheel 395 is equal to the diameter of the arc surface of the waist-shaped tamping plate 392, so that the rotation linear speed of the anti-skid wheel 395 and the arc surface of the waist-shaped tamping plate 392 is the same, thereby avoiding the phenomenon of the arc surface of the waist-shaped tamping plate 392 sliding on the soil, and then the waist-shaped tamping plate 392 can tamp the soil seamlessly.

[0072] It should be noted that when the rotating gear 393 moves to the left and disengages from the half-toothed ring 394 on the right, the rotating gear 393 is still rotating, and the rotating gear 393 and the half-toothed ring 394 on the right cannot be disengaged instantly, so that the rotating gear 393 drives the left end of the waist-shaped tamping plate 392 to rotate downward through the half-toothed ring 394 on the right. At this time, the left end of the waist-shaped tamping plate 392 is blocked by the soil and cannot rotate, so that the torsional force of the anti-skid wheel 395 on the rotating rod 391 exceeds the limit, thereby causing the torsion steel ball 396 to move away from the anti-skid wheel 395 and exit from the inside of the hemispherical groove, so that the anti-skid wheel 395 no longer drives the rotating rod 391 to rotate, thereby preventing the right end of the waist-shaped tamping plate 392 from tilting, and then the anti-skid wheel 395 continues to rotate until the torsion steel ball 396 is inserted into the inside of the hemispherical groove again under the push of the push spring.

[0073] It should be noted that the tooth height of the teeth of the rotating gear 393 and the tooth grooves of the semi-toothed ring 394 is relatively short, so that the time from the rotating gear 393 and the semi-toothed ring 394 just engaging to being completely stuck is relatively short, so that the semi-toothed ring 394 will not rotate too much in situ, and in the process of the semi-toothed ring 394 only rotating but not moving, the semi-toothed ring 394 drives the waist-shaped tamping plate 392 to rotate in situ, and will not cause omissions in the tamping of the soil.

[0074] When the soil of the seedbed is leveled, the telescopic section of the electric push rod 335 is retracted to lift the left side of the support plate 34 upward, and at the same time, the No. 1 insertion plate 382 withdraws from the notch groove 384 of the left guide column 31, so that the lower side of the support plate 34 cooperates with the slope of the soil, thereby moving the support plate 34 upward to the upper side of the soil, and then extending the telescopic section of the electric push rod 335 to the initial position, thereby locking the support plate 34 on the upper side of the soil and making the support plate 34 in a horizontal state.

[0075] When leveling the rice seedling bed, the present invention also includes the following steps: in the first step, the operator fixes the left part of the traction frame 1 to the walking machine, then starts the walking machine to drive the traction frame 1 to move to the seedling bed, and then connects the harrowing roller 12 to the power source of the walking machine, so that the walking machine drives the harrowing roller 12 to rotate, and at the same time the operator operates the walking machine to move to the left, so that the harrowing roller 12 turns over and loosens the soil of the seedling bed.

[0076] The second step is to start the execution motor 243 to drive the scraper plate 23 to move back and forth in the front-back direction, so that the scraper plate 23 scrapes the soil from the high place to the low place, and the shaking plate 22 drives the smoothing disk 252 to rotate continuously, while intermittently pushing the smoothing disk 252 downward, so that the smoothing disk 252 can not only smooth the soil, but also vibrate the soil, thereby increasing the smoothing effect of the soil.

[0077] The third step is to extend the telescopic section of the electric push rod 335 to drive the left side of the support plate 34 to swing downward and insert into the soil, so that the upper side of the support plate 34 cooperates with the slope of the soil, thereby moving the support plate 34 deep into the soil. When the lower side of the rolling cylinder 362 contacts the soil, the telescopic section of the electric push rod 335 is retracted to lock the support plate 34 in a horizontal posture, and the soil in the upper layer of the seedling bed is separated from the soil in the lower layer by the support plate 34.

[0078] In the fourth step, the resistance block 371 moves to the right relative to the supporting plate 34 under the push of the reaction force of the soil, and the resistance block 371 drives the stroke detection column 372 to move on the inclined surface inside the supporting plate 34, so that the inclined surface inside the supporting plate 34 pushes the stroke detection column 372 backward. When the backward displacement of the stroke detection column 372 increases, the rolling pressure of the rolling cylinder 362 on the upper soil is reduced, and vice versa, the rolling pressure of the rolling cylinder 362 on the upper soil is increased.

[0079] In the fifth step, the anti-skid wheel 395 drives the rotating rod 391 to rotate synchronously through the torsion steel ball 396, and the rotating rotating rod 391 moves along the waist-shaped groove of the waist-shaped tamping plate 392. When the rotating rod 391 drives the rotating gear 393 to move to engage with the half-toothed ring 394 on the left, the rotating rod 391 drives the waist-shaped tamping plate 392 to rotate 180°, so that the waist-shaped tamping plate 392 tamps on the upper soil. When the waist-shaped tamping plate 392 rotates, the arc surface on it is in continuous contact with the soil, so that the arc surface of the waist-shaped tamping plate 392 can roll the soil.

[0080] The sixth step is to retract the telescopic section of the electric push rod 335 so that the left side of the support plate 34 is lifted upward, and at the same time, the No. 1 insertion plate 382 withdraws from the notch groove 384 of the left guide column 31, so that the lower side of the support plate 34 cooperates with the slope of the soil, and then the support plate 34 moves upward to the upper side of the soil while moving to the left with the traction frame 1, and then the telescopic section of the electric push rod 335 is extended to the initial position, thereby locking the support plate 34 on the upper side of the soil and making the support plate 34 in a horizontal state.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A rice seedling bed leveling device, comprising a traction frame (1), a curved cover (11) being fixedly mounted on the lower left portion of the traction frame (1), a raking roller (12) being rotatably arranged inside the curved cover (11), characterized in that: A pre-leveling mechanism (2) for pre-leveling the seedbed is provided at the middle portion of the lower side of the traction frame (1), and a leveling mechanism (3) is provided at the right portion of the lower side of the traction frame (1); The pre-leveling mechanism (2) comprises an adjustment plate (21) slidably arranged on the lower side of the middle part of the traction frame (1), a threaded rod (211) rotatably arranged on the adjustment plate (21), the threaded rod (211) being threadedly connected to the traction frame (1), a shaking plate (22) slidably arranged on the lower part of the adjustment plate (21), a scraping plate (23) fixedly connected to the shaking plate (22) being arranged at equal intervals along the front-back direction on the lower part of the shaking plate (22), a driving component (24) for driving the shaking plate (22) to move being arranged on the adjustment plate (21), and a smoothing component (25) for smoothing the seedbed being arranged on the shaking plate (22); The leveling mechanism (3) comprises a guide column (31) slidably arranged on the right side of the traction frame (1) up and down, the guide column (31) being arranged in a rectangular shape, a position plate (32) being fixedly mounted on the lower part of the guide column (31), a support plate (34) being arranged on the lower part of the position plate (32) via an angle adjustment component (33), a C-shaped frame (35) slidably arranged on the lower side of the right side of the traction frame (1), the position plate (32) being fixedly connected to the C-shaped frame (35), a rolling component (36) for rolling the upper soil of the seedling bed being arranged on the horizontal section of the C-shaped frame (35), a control component (37) for controlling the downward pressure of the rolling component (36) being arranged on the support plate (34), a limiting component (38) for limiting the position plate (32) being arranged on the upper side of the right side of the traction frame (1), and a tamping component (39) for seamlessly tamping the upper soil of the seedling bed being arranged on the lower right side of the C-shaped frame (35).

2. The rice seedling bed leveling device according to claim 1, characterized in that: The driving assembly (24) comprises a rotating disk (241) rotatably arranged on the adjusting plate (21); a connecting plate (242) is hingedly connected to an eccentric position of the rotating disk (241); an end of the connecting plate (242) away from the rotating disk (241) is hingedly connected to the shaking plate (22); an actuating motor (243) is fixedly mounted on the left side of the adjusting plate (21); and an output shaft of the actuating motor (243) is fixedly connected to the rotating disk (241).

3. The rice seedling bed leveling device according to claim 1, characterized in that: The smoothing assembly (25) comprises a sliding frame (251) slidably arranged between two adjacent scraping plates (23) up and down, the front and rear sides of the sliding frame (251) are inclined structures, the middle part of the sliding frame (251) is a horizontal plate structure, a smoothing disc (252) is rotatably arranged in the middle part of the sliding frame (251), an active column (253) is fixedly installed on the upper side of the smoothing disc (252), and pulleys (254) are rotatably arranged on the lower side of the shaking plate (22) and located between the two adjacent scraping plates (23), all the pulleys (254) are connected to each other through belts, and the pulleys (254) are slidably connected to the outer side of the active column (253) at the corresponding position, a slapping part (255) for slapping the seedbed is arranged on the sliding frame (251), and a power part (256) for driving the slapping part (255) and the smoothing disc (252) is arranged on the shaking plate (22).

4. The rice seedling bed leveling device according to claim 3, characterized in that: The striking part (255) comprises a driven ring (2551) fixedly mounted on the upper part of the sliding frame (251); the driven ring (2551) is located at the coaxial lower part of the pulley (254) at the corresponding position; the driven ring (2551) does not contact the active column (253); the upper side surface of the driven ring (2551) and the lower side surface of the pulley (254) are both provided with raised blocks (2552) at equal intervals along their circumferential direction; both sides of the raised blocks (2552) are provided with inclined surfaces; and a tension spring is provided between the sliding frame (251) and the shaking plate (22).

5. The rice seedling bed leveling device according to claim 3, characterized in that: The power unit (256) comprises a rotating sleeve (2561) rotatably arranged on the upper side of the shaking plate (22); the rotating sleeve (2561) is slidably connected to the driving column (253) at a corresponding position up and down; a driving gear (2562) is fixedly mounted on the upper end of the rotating sleeve (2561); and a fixed rack (2563) meshing with the driving gear (2562) is fixedly mounted on the lower part of the adjustment plate (21) at a position corresponding to the driving gear (2562).

6. The rice seedling bed leveling device according to claim 1, characterized in that: The angle adjustment assembly (33) comprises a moving block (331) slidably arranged on the upper side of the position plate (32) to the left and right, the moving block (331) being provided with a straight waist-shaped groove, T-shaped plates (332) being rotatably arranged on both the front and rear sides of the position plate (32), a connecting column (333) being fixedly installed between the upper parts of the vertical sections of the two T-shaped plates (332), the connecting column (333) being matched with the notch of the moving block (331), push-pull plates (334) being hingedly connected to the lower parts of the left and right ends of the transverse section of the T-shaped plate (332), the lower end of the push-pull plate (334) being hingedly connected to the supporting plate (34), an electric push rod (335) being fixedly installed on the right side of the position plate (32), the telescopic section of the electric push rod (335) being fixedly connected to the moving block (331).

7. The rice seedling bed leveling device according to claim 6, characterized in that: The position limiting assembly (38) comprises a movable plate (381) slidably arranged on the upper side of the traction frame (1) to the left and right, the movable plate (381) being slidably connected to the movable block (331) to the upper and lower sides, a first insertion plate (382) being slidably arranged on the left side of the movable plate (381), a slope gradually tilted downward from right to left being provided on the left side of the first insertion plate (382), a second insertion plate (383) being slidably arranged on the right side of the movable plate (381), a slope gradually tilted upward from left to right being provided on the right side of the second insertion plate (383), compression springs being provided between the first insertion plate (382), the second insertion plate (383) and the movable plate (381), the first insertion plate (382) and the second insertion plate (383) being located between the guide posts (31) on the left and right sides, and notches (384) being provided at equal intervals in the upper and lower directions at positions of the guide posts (31) close to the movable plate (381).

8. The rice seedling bed leveling device according to claim 1, characterized in that: The rolling assembly (36) comprises connecting members (361) arranged at equal intervals along the front-back direction on the horizontal section of the C-shaped frame (35); the connecting members (361) are slidably connected to the C-shaped frame (35) in an up-and-down manner; the upper end of the connecting member (361) is rotatably connected to a rolling cylinder (362); hydraulic push rods (363) are fixedly installed at equal intervals along the front-and-back direction on the lower part of the horizontal section of the C-shaped frame (35); and the lower end of the hydraulic push rods (363) is rotatably connected to the rolling cylinder (362).

9. The rice seedling bed leveling device according to claim 8, characterized in that: The control assembly (37) comprises resistance blocks (371) arranged at equal intervals in the front-to-back direction inside the support plate (34), the positions of the resistance blocks (371) corresponding to the rolling cylinders (362), a coil spring being arranged between the right side of the resistance block (371) and the support plate (34), a stroke detection column (372) being arranged at the front of the resistance block (371) for sliding forward and backward, a return spring being arranged between the stroke detection column (372) and the resistance block (371), the stroke detection column (372) controlling the hydraulic push rod (363) by means of electric control, and an inclined surface gradually tilted backward from left to right is provided at the position inside the support plate (34) corresponding to the stroke detection column (372).

10. The rice seedling bed leveling device according to claim 1, characterized in that: The tamping assembly (39) comprises a rotating rod (391) rotatably arranged at the lower right side of the U-shaped frame (35) through a support rod (390); a waist-shaped tamping plate (392) is inserted and connected to the middle of the rotating rod (391); a waist-shaped groove is provided inside the waist-shaped tamping plate (392); the waist-shaped tamping plate (392) cooperates with the groove of the rotating rod (391); a rotating gear (393) is fixedly installed at the front of the rotating rod (391); the front side of the waist-shaped tamping plate (392) A half toothed ring (394) is fixedly installed symmetrically on both sides, an anti-skid wheel (395) is rotatably arranged at the front end of the rotating rod (391), and hemispherical grooves are provided on the inner side surface of the anti-skid wheel (395) at equal intervals along its circumference, and torsion steel balls (396) are provided at equal intervals along its circumference at the front end of the rotating rod (391) to slide along its radial direction, and the number of torsion steel balls (396) is equal to the number of hemispherical grooves, and a pushing spring is provided between the torsion steel balls (396) and the rotating rod (391).

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