High-precision paddy field leveling device

Abstract

The invention belongs to the technical field of land leveling devices, and relates to a high-precision paddy field land leveling device which comprises a main machine hanging frame, a horizontal keeping mechanism, a soil scraping depth adjusting mechanism and a soil scraping mechanism, the horizontal keeping mechanism comprises a horizontal floating hanging frame, a leveling telescopic cylinder and an angle sensor, and the main machine hanging frame is hinged to the horizontal floating hanging frame; the two ends of the leveling telescopic cylinder are connected with the main machine hanging frame and the horizontal floating hanging frame respectively, the inclination angle of the main machine hanging frame or the horizontal floating hanging frame in the width direction of the soil scraping mechanism is detected through the angle sensor, the leveling telescopic cylinder is controlled to act, and the horizontal floating hanging frame is kept horizontal. The depth adjusting mechanism comprises a depth adjusting telescopic cylinder and a depth controller, the two ends of the depth adjusting telescopic cylinder are connected with the horizontal floating hanging frame and the soil scraping mechanism respectively, one side of the soil scraping mechanism is hinged to the horizontal floating hanging frame, and the depth controller controls the elongation of the depth adjusting telescopic cylinder to adjust the depth of the soil scraping mechanism. The scraping mechanism is propelled in parallel at a preset depth and angle relative to the paddy field, so that the leveling effect with uniform height is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of land leveling devices, and specifically relates to a high-precision paddy field leveling device. Background Art

[0002] Before paddy field cultivation, land leveling is very important, and the effect of land leveling directly affects crop growth. If the land in the paddy field is uneven due to uneven height, resulting in uneven irrigation depth and mud distribution thickness, it is easy to cause adverse effects in agricultural operations such as transplanting, weeding or fertilization. Among them, the low flatness of the paddy field makes the planting depth of the seedlings low during transplanting, resulting in an increase in the rate of falling and floating seedlings, making it impossible for the seedlings to grow stably. This undesirable phenomenon is more common in automated transplanting operations, seriously reducing the efficiency of transplanting and the yield rate of seedlings.

[0003] In the prior art, a Chinese utility model with publication number CN216253780U discloses a paddy field satellite land leveler, which includes a frame, a land leveler, a height adjustment mechanism for adjusting the height of the land leveler, an angle adjustment mechanism for adjusting the angle of the land leveler, a satellite signal receiver, and a control box; the control box receives a satellite signal sent by the satellite signal receiver and controls the height adjustment mechanism to adjust the relative height between the land leveler and the bottom surface; the angle adjustment mechanism is used to adjust the scraping angle of the land leveler. Although the land leveler can simultaneously set the height adjustment and angle adjustment of the land leveler, and uses a satellite system to implement land leveling operations, it has the following problems: the land leveler needs to rely on traction equipment for land leveling operations. When the ground heights on the left and right sides of the traction equipment are uneven, the two ends of the land leveler will be at different heights, so that it can only operate within a shorter width range in a single trip of the land leveling operation, which not only prolongs the operation time, but also relies on satellite control to only adjust the terrain changes within a large range, and it is difficult to make precise adjustments in real time according to the flatness of the land in a smaller operation area. Summary of the invention

[0004] Based on the above-mentioned background technical needs, the present application provides a high-precision paddy field leveling device, which is used to solve the problem that the existing technology needs to rely on traction equipment for leveling operations. When the ground height on the left and right sides of the traction equipment is uneven, the two ends of the leveling plate will be at different heights, causing it to only be able to operate within a shorter width range in a single stroke of the leveling operation. Not only does it extend the operation time, but it also relies on satellite control to only adjust to terrain changes within a large range, and it is difficult to make precise adjustments in real time according to the flatness of the land in a smaller operating area.

[0005] In order to achieve the above purpose, the technical solution of this application is: A high-precision paddy field leveling device comprises a main machine hanger, a horizontal holding mechanism, a scraping depth adjustment mechanism and a scraping mechanism, wherein the horizontal holding mechanism comprises a horizontal floating hanger, a leveling telescopic cylinder and an angle sensor, wherein the main machine hanger is hinged to the horizontal floating hanger, one end of the leveling telescopic cylinder is connected to the main machine hanger, and the other end is connected to the horizontal floating hanger, wherein the angle sensor is arranged on the main machine hanger or on the horizontal holding mechanism, and the leveling telescopic cylinder is used to drive the horizontal floating hanger to rotate to a horizontal position based on an angle signal emitted by the angle sensor; the scraping mechanism comprises a first scraping plate and a second scraping plate, and the depth adjustment mechanism comprises a depth adjustment telescopic cylinder and a depth controller, wherein one end of the depth adjustment telescopic cylinder is connected to the horizontal floating hanger, and the other end is connected to the first scraping plate, and the leading edge of the first scraping plate is hinged to the horizontal floating hanger, and the depth controller is electrically connected to the depth adjustment telescopic cylinder, and is used to control the depth adjustment telescopic cylinder to drive the scraping plate to flip downward around the hinged portion, and the second scraping plate is hinged to the trailing edge of the first scraping plate.

[0006] Preferably, the main engine bracket is provided with a hinge shaft at the midpoint of the width direction, the opposite ends of the horizontal floating bracket are respectively provided with first hinge ears, the horizontal floating bracket is provided with a mounting hole at the midpoint of the width direction, the mounting hole is hinged to the hinge shaft, the number of the leveling telescopic cylinders is a pair, the telescopic ends of a pair of leveling telescopic cylinders are respectively hinged to the first hinge ears, and the other ends are respectively hinged to the two ends of the main engine bracket.

[0007] Preferably, a pair of second hinged ears are symmetrically arranged on both sides of the center of the upper surface of the first scraper plate, and hinged seats are respectively arranged at both ends of the horizontal floating hanger, and the hinged seats are respectively hinged to the pair of second hinged ears.

[0008] Preferably, the depth controller comprises a satellite signal receiver and a pressure supply pump, and the pressure supply pump receives a satellite signal sent by the satellite signal receiver and controls the action of the depth-adjusting telescopic cylinder based on the satellite signal.

[0009] Preferably, the number of the depth-adjusting telescopic cylinder is one, and both ends of the depth-adjusting telescopic cylinder are respectively hinged to the center of the horizontal floating hanger and the center of the rear edge of the first scraper plate.

[0010] Preferably, the depth-adjusting telescopic cylinders are in a pair, and the pair of the depth-adjusting telescopic cylinders are symmetrically distributed on both sides of the center of the horizontal floating hanger in the width direction, and the two ends of the depth-adjusting telescopic cylinders are respectively hinged to the horizontal floating hanger and the first scraper plate.

[0011] Preferably, a plurality of elastic grass pressing strips are arranged at intervals along the width direction on the front edge of the first scraping plate, and an elastic floating gap is formed between at least a portion of any of the elastic grass pressing strips and the lower surface of the first scraping plate.

[0012] Preferably, the distance between adjacent elastic grass pressing strips is greater than 3CM and less than 10CM.

[0013] Preferably, the value of the elastic floating gap is greater than 5CM and less than 15CM.

[0014] Preferably, the elastic grass pressing strip is a manganese steel strip.

[0015] By adopting the above technical solution, compared with the prior art, the present application has at least the following beneficial effects: When the paddy field leveling device is traveling in the paddy field, the depth-adjusting telescopic cylinder adjusts the angle of the first scraping plate in the forward direction in real time, and compensates for the slope difference of the terrain in the forward direction, so that the first scraping plate can maintain horizontal advancement relative to the ground during the advancement process; at the same time, the leveling telescopic cylinder adjusts the angle of the first scraping plate in the width direction in real time, and compensates for the height difference of the terrain in the width direction, so as to avoid any end of the first scraping plate from tilting up, so that the first scraping plate can be stably advanced at the preset scraping depth, and at the same time, the second scraping plate performs secondary soil compaction behind the first scraping plate to eliminate the indentation of the first scraping plate and improve the flatness of the land. Therefore, compared with the prior art, the first scraping plate of the present application can perform land leveling operations in a larger width range, which not only has higher control accuracy and leveling efficiency, but also can effectively improve the flatness of the land and the efficiency of leveling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric view of a high-precision paddy field leveling device in a certain embodiment.

[0017] Figure 2 It is a front view of a high-precision paddy field leveling device in a certain embodiment.

[0018] Figure 3 It is a side view of a high-precision paddy field leveling device in a certain embodiment.

[0019] Figure 4 It is a DD cross-sectional view of a high-precision paddy field leveling device in a certain embodiment.

[0020] In the figure: a main machine bracket 10, an articulated shaft 11, a three-point traction connecting seat 12, a level holding mechanism 20, a horizontal floating bracket 21, a first articulated ear 211, a mounting hole 212, an articulated seat 213, a leveling telescopic cylinder 22, an angle sensor 23, a scraping depth adjustment mechanism 30, a depth adjustment telescopic cylinder 31, a depth controller 32, a scraping mechanism 40, a first scraping plate 41, a second articulated ear 411, an elastic grass pressing strip 42, and a second scraping plate 43. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The technical solution of the present application will be further described below in conjunction with the drawings of the embodiments of the present application, and the present application is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present application, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "rear", "top", "bottom" and the like indicating directions or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present patent, and for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0023] The following is combined with Figure 1 To Attachment Figure 4 And specific embodiments further describe the present application in detail.

[0024] In the present application, a high-precision paddy field leveling device is disclosed, including a main frame 10, a horizontal holding mechanism 20, a scraping depth adjustment mechanism 30 and a scraping mechanism 40, wherein the main frame 10 is composed of a longitudinal beam extending forward and backward and a V-shaped beam symmetrically arranged at the front and rear ends of the longitudinal beam, and a three-point traction connection seat 12 is arranged at the front end of the main frame 10 for connecting with tractors, agricultural machinery heads and other traction equipment through connecting rods, telescopic cylinders and other devices; the horizontal holding mechanism 20 includes a horizontal floating frame 21 , a leveling telescopic cylinder 22 and an angle sensor 23. From a top-down perspective, the horizontal floating bracket 21 is a rectangular frame whose front-to-back width is slightly smaller than the front-to-back width of the main frame bracket 10. From a main view perspective, either end of the left and right ends of the horizontal floating bracket 21 is hinged to the lower end of the leveling telescopic cylinder 22, and the other end of the leveling telescopic cylinder 22 is hinged to one end of the V-shaped beam of the main frame bracket 10. The side of the horizontal floating bracket 21 away from the leveling telescopic cylinder 22 is hinged to the main frame bracket 10 through an axis or a connecting rod. The angle sensor 23 is arranged at On the main frame 10 or the horizontal holding mechanism 20, the angle sensor 23 is used to detect the inclination of the paddy field leveling device relative to the ground in the width direction, and control the extension or contraction of the leveling telescopic cylinder 22 according to the inclination angle signal (hereinafter referred to as the angle signal), so that the horizontal floating frame 21 rotates around the hinge part to a position relatively horizontal with the ground; the scraping mechanism 40 includes a first scraping plate 41 and a second scraping plate 43, and the depth adjustment mechanism includes a depth adjustment telescopic cylinder 31 and a depth controller 32, one end of the depth adjustment telescopic cylinder 31 is connected to the depth controller 32. The first scraper plate 41 is connected to the horizontal floating bracket 21, and the other end is connected to the upper surface of the first scraper plate 41 near the rear edge. The front edge of the upper surface of the first scraper plate 41 is hinged to the horizontal floating bracket 21. The first scraper plate 41 can be flipped up or down around the hinge. The depth controller 32 is electrically connected to the depth adjusting telescopic cylinder 31, and is used to control the depth adjusting telescopic cylinder 31 to extend or shorten, so that the lower surface of the first scraper plate 41 approaches the ground at different angles or spacings. The second scraper plate 43 is hinged to the rear edge of the first scraper plate 41 through a hinge.

[0025] Specifically, the installation position of the angle sensor 23 is different, and the direction of controlling the rotation of the first scraper plate 41 is also different. In one embodiment, the angle sensor 23 uses a high-precision single-axis inclination sensor. In the width direction of the main view angle, the angle sensor 23 is installed on a plane at the symmetry center of the main frame 10 to monitor the inclination of the main frame 10 relative to the horizontal plane. The leveling telescopic cylinder 22 uses a cylinder or an electronic hydraulic cylinder with a solenoid valve in the pressure supply circuit and the pressure relief circuit. The sensor is electrically connected to the solenoid valve through a PLC control switch to form a control circuit. When the main frame 10 is towed by the traction equipment, once the ground height difference in the width direction causes the traction equipment to tilt in the width direction, the main frame 10 is also tilted at the same inclination angle. This process will drive the first scraper plate 41 to tilt in the width direction. As a result, the first scraper plate 41 cannot uniformly smooth the soil in the paddy field area according to the set height. When the angle sensor 23 senses the inclination and sends the angle signal to the PLC control switch, the PLC control switch analyzes the inclination angle range and controls the opening time of the solenoid valve of the pressure supply circuit of the leveling telescopic cylinder 22 until the telescopic end of the leveling telescopic cylinder 22 is extended to a length that can restore the first scraper plate 41 to a horizontal state, and then the pressure supply circuit solenoid valve is closed. Under the action of the leveling telescopic cylinder 22, the first scraper plate 41 rotates relative to the deflection direction of the main engine bracket 10 around the hinged part, and the inclination of the main engine bracket 10 is compensated, so that the lower surface of the first scraper plate 41 can remain horizontal relative to the ground in the width direction. How to control the horizontal floating bracket 21 to remain horizontal through the angle sensor 23 is not the focus of this application, so its working process is only illustrated by example and will not be repeated hereafter.

[0026] In another embodiment, the angle sensor 23 is arranged on a plane somewhere on the horizontal floating bracket 21. When the horizontal floating bracket 21 has an inclination angle relative to the main bracket 10, the leveling telescopic cylinder 22 drives the horizontal floating bracket 21 to eliminate the inclination angle, so that the lower surface of the first scraper plate 41 can remain horizontal relative to the ground in the width direction.

[0027] The working principle and structure of the depth adjustment telescopic cylinder 31 are similar to those of the above-mentioned leveling telescopic cylinder 22. The depth controller 32 is only used as a certain embodiment. It only needs to be able to control the depth adjustment telescopic cylinder 31 to extend and shorten according to the command. After the high-precision paddy field leveling device is put into water, the depth adjustment telescopic cylinder 31 is extended to a certain length, so that the first scraping plate 41 is turned downward and the lower working surface of the first scraping plate 41 can reach the depth for implementing the leveling operation and be parallel to the water surface. Under the towing action of the traction equipment, the first scraping plate 41 can be pushed forward in parallel to make the water surface in the paddy field The following uneven soil is smoothed or flattened; the extension amount of the depth-adjusting telescopic cylinder 31 can generally be fixed so that the working surface of the first scraper plate 41 reaches the average height of the soil surface. In one embodiment, along the moving direction of the grader, another single-axis inclination sensor can be set on a side plane of the main frame bracket 10, which is used to control the depth-adjusting telescopic cylinder 31 to fine-tune the first scraper plate 41 according to the sensed climbing inclination or downhill inclination of the main frame bracket 10, so as to achieve the purpose of angle compensation, so that the soil scraped by the first scraper plate 41 can remain flat at a predetermined depth.

[0028] When an upward slope appears in front of the first scraper plate 41, in order for the first scraper plate 41 to scrape the soil slope flat, it is necessary to adjust the first scraper plate 41 downward to a larger angle through the depth-adjusting telescopic cylinder 31. At this time, only the edge of the rear edge of the first scraper plate 41 may be involved in the operation of scraping the soil flat, resulting in undulating scratches on the soil surface. Since the second scraper plate 43 hinged to the rear edge of the first scraper plate 41 is not affected by the depth-adjusting telescopic cylinder 31, the lower plane of the second scraper plate 43 can always maintain horizontal contact with the soil surface. While the first scraper plate 41 pushes forward to scrape the soil, the second scraper plate 43 flattens the soil surface from the back, further improving the flatness of the land.

[0029] The use of the above-mentioned high-precision paddy field leveling device can achieve at least the following technical effects: When the paddy field leveling device is traveling in the paddy field, the depth adjustment telescopic cylinder 31 is used to adjust the angle of the first scraping plate 41 in the forward direction in real time, and the slope difference of the terrain in the forward direction is compensated, so that the first scraping plate 41 is kept horizontally advanced relative to the ground during the forward process; at the same time, the leveling telescopic cylinder 22 is used to adjust the angle of the first scraping plate 41 in the width direction in real time, and the height difference of the terrain in the width direction is compensated to avoid any end of the first scraping plate 41 from tilting up, so that the first scraping plate 41 is stably advanced at the preset scraping depth, and at the same time, the second scraping plate 43 performs secondary soil compaction behind the first scraping plate 41 to eliminate the indentation of the first scraping plate 41 and improve the flatness of the land. Therefore, compared with the prior art, the first scraping plate 41 of the present application can perform land leveling operations in a larger width range, which not only has higher control accuracy and leveling efficiency, but also can effectively improve the land flatness and the efficiency of leveling operations.

[0030] In addition, this application also provides some more specific implementation methods to improve the above-mentioned high-precision paddy field leveling device.

[0031] Furthermore, in order to improve the leveling efficiency and leveling accuracy of the first scraping plate 41 by the level holding mechanism 20, Figure 2 Taking the width direction as an example, a point on the symmetry axis path of the main engine bracket 10 is taken as the midpoint of the main engine bracket 10 or the rotation center of the horizontal floating bracket 21, and a hinge shaft 11 is provided at the midpoint of the main engine bracket 10 from the front end to the rear end, and a mounting hole 212 is provided at the midpoint of the width direction of the horizontal floating bracket 21, and the horizontal floating bracket 21 is hinged to the hinge shaft 11 through the mounting hole 212; first hinge ears 211 are respectively provided at both ends of the upper surface of the horizontal floating bracket 21, and the number of the leveling telescopic cylinders 22 is a pair, and the telescopic ends of a pair of leveling telescopic cylinders 22 are respectively hinged to the first hinge ears 211, and the other ends are respectively hinged to the two ends of the main engine bracket 10.

[0032] When using the above-mentioned high-precision paddy field leveling device, after the above-mentioned angle sensor 23 senses that the main frame 10 or the horizontal floating frame 21 has an inclination angle relative to the initial horizontal position, the left and right leveling telescopic cylinders 22 are controlled to synchronously drive the horizontal floating frame 21 to rotate around the hinge shaft 11. With the coordinated action of the two leveling telescopic cylinders 22, the horizontal floating frame 21 can be restored and maintained at a horizontal posture faster, and the hinge shaft 11 can stabilize the center of gravity of the horizontal floating frame 21. The leveling telescopic cylinders 22 on both sides can simultaneously support the first hinged ear 211 bracket downward to prevent the horizontal floating frame 21 from shaking left and right, so that the first scraper plate 41 can maintain a stable horizontal posture in the width direction, and has higher leveling accuracy than a single leveling telescopic cylinder 22.

[0033] Furthermore, in order to improve the stability of the first scraper plate 41 when it rotates relative to the horizontal floating bracket 21, a pair of second hinged ears 411 are provided on both sides of the center of the surface of the first scraper plate 41 in the width direction, and the horizontal floating bracket 21 is respectively provided with hinge seats 213 at both ends in the width direction, and the hinge seats 213 are respectively hinged to the second hinged ears 411.

[0034] When using the above-mentioned high-precision paddy field leveling device, in order to ensure that the first scraper plate 41 has sufficient working width, in a certain embodiment, the width of the first scraper plate 41 may be more than five meters. In order to ensure that the first scraper plate 41 with a longer working width is evenly stressed, the symmetrically arranged second articulated ears 411 and the articulated seats 213 can effectively disperse the downward pulling force of the first scraper plate 41 on the horizontal floating bracket 21, making the process of leveling the first scraper plate 41 more stable and labor-saving.

[0035] In one embodiment, based on the above-mentioned embodiment, the above-mentioned depth controller 32 includes a satellite signal receiver and a pressure pump, the depth adjusting telescopic cylinder 31 adopts a solenoid valve to control the telescopic oil cylinder of the oil inlet, and the oil outlet of the pressure pump is connected to the oil inlet of the depth adjusting telescopic cylinder 31; the satellite signal receiver receives positioning information, altitude information, ground height information, etc. sent by the satellite, and obtains the ground height difference of the area to be worked based on computer technology, and uses this difference to calculate the elongation of the depth adjusting telescopic cylinder 31 that can enable the first scraper plate 41 to achieve the soil leveling effect, so as to control the downward deflection angle of the first scraper plate 41. Specifically, after receiving the corresponding signal, the pressure pump opens the solenoid valve of the oil outlet, provides pressurized oil to the telescopic cylinder, and pushes the telescopic end to extend. The opening time of the solenoid valve corresponds to the extension of the depth-adjusting telescopic cylinder 31. Under a fixed oil supply pressure, the solenoid valve opens according to the set time and closes after the timing ends. The opening time is just enough to make the extension of the telescopic end reach the preset length. The specific control process and calculation process are executed by the computer, which is not the focus of this application, so it will not be repeated. This embodiment refers to a paddy field satellite leveler disclosed in the utility model with reference to the publication number CN216253780U. The utility model uses the method of adjusting the cylinder action by receiving high-precision positioning information provided by positioning satellites such as Beidou satellites in the utility model to control the depth-adjusting cylinder in this application to achieve the purpose of accurately controlling the lowering depth of the first scraper plate 41.

[0036] Furthermore, in a preferred embodiment, in order to save the manufacturing cost of the above-mentioned paddy field leveling device, the number of the above-mentioned depth adjusting telescopic cylinder 31 is one, and the two ends of the depth adjusting telescopic cylinder 31 are respectively hinged to the center of the width direction of the horizontal floating bracket 21 and the center of the width direction of the first scraper plate 41, so as to save the manufacturing cost while ensuring that the depth adjusting telescopic cylinder 31 can achieve the purpose of driving the first scraper plate 41 to flip up and down.

[0037] Furthermore, in another embodiment, in order to improve the stability of the operation of the equipment, the number of the above-mentioned depth-adjusting telescopic cylinders 31 is a pair, and the two depth-adjusting telescopic cylinders 31 are distributed on both sides of the center of the horizontal floating hanger 21 in the width direction, and the two ends of the depth-adjusting telescopic cylinders 31 are respectively hinged to the lower side of the horizontal floating hanger 21 and the upper surface of the first scraping plate 41. In the process of driving the first scraping plate 41 to flip downward to the position of the preset scraping depth by the depth-adjusting telescopic cylinders 31, the paired depth-adjusting telescopic cylinders 31 can synchronously drive the first scraping plate 41 to rotate, effectively dispersing the gravity of the first scraping plate 41, and can improve the stability of the driving process relative to a single depth-adjusting telescopic cylinder 31.

[0038] Although the above-mentioned first scraper plate 41 can achieve the effect of leveling the paddy field soil under the adjustment of various mechanisms, since there are crop stubbles or root stubbles of plants such as weeds remaining in the soil layer, if the seedlings of crops are shallowly planted at the height where these root stubbles are located, the lower ends of the seedlings will be lifted up by the root stubbles, resulting in the phenomenon of seedlings falling over or floating. This, together with the uneven terrain of the paddy field, affects the planting effect of the seedlings.

[0039] Furthermore, in order to process the stubble during the process of scraping the paddy field soil, the front edge of the first scraping plate 41 is provided with a plurality of elastic grass pressing strips 42 at intervals along the width direction, and at least a portion of any elastic grass pressing strip 42 forms an elastic floating gap with the lower surface of the first scraping plate 41. The elastic grass pressing strip 42 is roughly L-shaped, and its upper end is detachably connected to the front edge of the first scraping plate 41 by screws, and at least a portion of its lower end is parallel to the scraping operation surface of the first scraping plate 41 along its extension direction in a natural state. In order to avoid plastic deformation of the elastic grass pressing strip 42 after being compressed, the elastic grass pressing strip 42 is made of highly elastic metal. During the process of the first scraping plate 41 advancing forward on the soil surface, the portions of the elastic grass pressing strips 42 located below the first scraping plate 41 extend into the soil, and the stubble within the elastic deformation range is flattened. At least in the area where the elastic grass pressing strip 42 moves, the stubble under the soil is flattened, so that a sufficient planting depth is left between the soil and the stubble.

[0040] Specifically, in order to enable the elastic grass pressing strips 42 to flatten the stubble in a larger range, the spacing between adjacent elastic grass pressing strips 42 is in the range of 3 cm to 10 cm, within which the probability of missing the stubble can be reduced. It can be seen that the spacing between mechanical transplanting is generally greater than 10 cm, and the elastic grass pressing strips 42 set within the above spacing range can at least reduce the probability that the weed stubble within the spacing range of 10 cm is too high and affects the growth of crop seedlings.

[0041] In order to ensure that the elastic grass pressing strip 42 can create a sufficient planting depth under the soil, the value of the elastic floating gap is in the range of 5CM to 15CM. It can be seen that the shallow planting depth of rice is generally not more than 5CM. The elastic grass pressing strip 42 deformed within the above depth range can at least bend or break the top of the weed root stubble downward, so that it has a planting depth of more than five centimeters from the soil surface, so as to prevent the weeds from affecting the growth of the rice seedlings.

[0042] In order to ensure that the elastic grass pressing strip 42 has sufficient elastic deformation ability so that it can continuously withstand greater deformation pressure during the grass pressing process, thereby extending its service life and reducing the frequency of replacement, the above-mentioned elastic grass pressing strip 42 adopts a manganese steel strip; the surface of the manganese steel strip can be sprayed with an anti-rust paint layer to prevent rust and corrosion caused by long-term immersion in water of the elastic grass pressing strip 42.

[0043] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-precision paddy field leveling device, characterized in that: It includes a main machine bracket, a horizontal holding mechanism, a scraping depth adjustment mechanism and a scraping mechanism, the horizontal holding mechanism includes a horizontal floating bracket, a leveling telescopic cylinder and an angle sensor, the main machine bracket is hinged to the horizontal floating bracket, one end of the leveling telescopic cylinder is connected to the main machine bracket, and the other end is connected to the horizontal floating bracket, the angle sensor is arranged on the main machine bracket or the horizontal holding mechanism, the leveling telescopic cylinder is used to drive the horizontal floating bracket to rotate to a horizontal position based on the angle signal emitted by the angle sensor; the scraping mechanism includes a first scraping plate and a second scraping plate, the depth adjustment mechanism includes a depth adjustment telescopic cylinder and a depth controller, one end of the depth adjustment telescopic cylinder is connected to the horizontal floating bracket, and the other end is connected to the first scraping plate, and the leading edge of the first scraping plate is hinged to the horizontal floating bracket, the depth controller is electrically connected to the depth adjustment telescopic cylinder, and is used to control the depth adjustment telescopic cylinder to drive the scraping plate to flip downward around the hinged portion, and the second scraping plate is hinged to the trailing edge of the first scraping plate.

2. The high-precision paddy field leveling device according to claim 1, characterized in that: The main engine bracket is provided with an articulated shaft at the midpoint in the width direction, and the opposite ends of the horizontal floating bracket are respectively provided with first articulated ears. The horizontal floating bracket is provided with a mounting hole at the midpoint in the width direction, and the mounting hole is hinged to the articulated shaft. The number of the leveling telescopic cylinders is a pair, and the telescopic ends of the pair of leveling telescopic cylinders are respectively hinged to the first articulated ears, and the other ends are respectively hinged to the two ends of the main engine bracket.

3. The high-precision paddy field leveling device according to claim 1, characterized in that: A pair of second hinged ears are symmetrically arranged on both sides of the center of the upper surface of the first scraper plate, and hinged seats are respectively arranged at both ends of the horizontal floating hanger, and the hinged seats are respectively hinged to the pair of second hinged ears.

4. The high-precision paddy field leveling device according to claim 1, characterized in that: The depth controller includes a satellite signal receiver and a pressure supply pump. The pressure supply pump receives a satellite signal sent by the satellite signal receiver and controls the action of the depth-adjusting telescopic cylinder based on the satellite signal.

5. The high-precision paddy field leveling device according to claim 1, characterized in that: The number of the depth-adjusting telescopic cylinder is one, and both ends of the depth-adjusting telescopic cylinder are respectively hinged to the center of the horizontal floating hanger and the center of the rear edge of the first scraping plate.

6. The high-precision paddy field leveling device according to claim 1, characterized in that: The depth-adjusting telescopic cylinders are in a pair, and the pair of the depth-adjusting telescopic cylinders are symmetrically distributed on both sides of the center of the horizontal floating hanger in the width direction, and the two ends of the depth-adjusting telescopic cylinders are respectively hinged to the horizontal floating hanger and the first scraper plate.

7. The high-precision paddy field leveling device according to claim 1, characterized in that: A plurality of elastic grass pressing strips are arranged at intervals along the width direction at the front edge of the first scraping plate, and an elastic floating gap is formed between at least a portion of any of the elastic grass pressing strips and the lower surface of the first scraping plate.

8. The high-precision paddy field leveling device according to claim 7, characterized in that: The spacing between adjacent elastic grass pressing strips is in the range of 3CM to 10CM.

9. The high-precision paddy field leveling device according to claim 7, characterized in that: The value of the elastic floating gap is in the range of 5CM to 15CM.

10. The high-precision paddy field leveling device according to any one of claims 7 to 8, characterized in that: The elastic grass pressing strip is a manganese steel strip.

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