A rotary tiller for washing salt in saline-alkali land during rice-oil rotation

Abstract

This invention relates to the field of saline-alkali land improvement machinery technology, and discloses a rotary tiller for washing salt in saline-alkali land used in rice-oilse rotation. The tiller includes a main frame, with drive boxes fixedly connected to both sides of the main frame. A motor is housed within each drive box. A shaft support opening is provided on the inner side of the drive box, through which a main shaft is movably mounted. A passive lever is fixedly connected to one side of each end of the main shaft. Drive gears are movably sleeved at both ends of the main shaft, with active levers fixedly connected to the inner side of each drive gear. Rotary tillage blades are evenly arranged around the periphery of the middle section of the main shaft. A material box is fixedly installed on the top of the main frame. This invention, by adding a material box to the main frame and creating a cavity and material distribution port within the main shaft that communicate with the material box, allows for the simultaneous mixing of soil amendment materials into the soil during deep tilling of saline-alkali land. This enhances the soil's salt-holding capacity after deep tilling and washing, breaking the vicious cycle of salt accumulation at the top and stagnation at the bottom, and effectively improving the soil structure of saline-alkali land.

Description

Technical Field

[0001] This invention relates to the field of saline-alkali land improvement machinery technology, specifically a rotary tiller for washing salt in saline-alkali land with water during rice-oilseed rotation. Background Technology

[0002] In the treatment of saline-alkali land, the surface layer of saline-alkali land often forms a dense, hard crust (permeability <0.1cm / h) due to salt crystallization and sodium ion dispersion. Direct irrigation will lead to lateral runoff of water and cannot effectively infiltrate and leach salt. Therefore, rotary tillage before salt leaching is a key pretreatment step. Its core purpose is to improve soil structure through physical means, break up the surface crust, improve soil aeration and permeability, promote the infiltration of leaching water, turn the surface high-salt soil to the deep layer, and turn the deep low-salt soil to the surface layer, reduce the salt concentration in the cultivated layer, and mix in organic fertilizer or soil conditioner (such as gypsum) to promote the formation of soil aggregate structure, creating favorable conditions for subsequent leaching and desalination.

[0003] However, most existing rotary tillers are tillage machines that are used in conjunction with tractors to complete tillage and harrowing operations. They are inconvenient to use for pretreatment work before soil improvement and salt leaching, and lack a matching mixing structure to improve soil structure. A utility model patent with application number 201922470414.1 disclosed a mixing rotary tiller. Although the rotary tiller is equipped with a fertilizer application device, there is a gap between the fertilizer application hole and the rotary tiller, resulting in poor fertilizer mixing effect and failure to achieve synchronous fertilizer mixing during rotary tillage. The output is fixed and uncontrollable, and it cannot achieve the effect of free adjustment of the output under different soil conditions. Summary of the Invention

[0004] This addresses the shortcomings of existing rotary tillers for washing salt with water, as mentioned in the background art.

[0005] This invention provides the following technical solution: a rotary tiller for washing salt in saline-alkali land during rice-oilseed rotation, comprising a main frame, drive boxes fixedly connected to both sides of the main frame, a motor housed in the drive box, a shaft bracket opening on the inner side of the drive box, and a main shaft movably mounted through the shaft bracket opening, a passive lever fixedly connected to one side of each end of the main shaft, drive gears movably sleeved at both ends of the main shaft, an active lever fixedly connected to the inner side of the drive gears, rotary tillage blades evenly arranged around the periphery of the middle section of the main shaft, a material box fixedly installed on the top of the main frame, discharge pipes arranged on both sides of the material box, a screw-connected connecting pipe fixedly connected to the tail end of the discharge pipe, the screw-connected connecting pipe movably sleeved to both ends of the main shaft, a cavity opened inside the main shaft, and a material distribution port opened on the surface of the main shaft.

[0006] Preferably, a secondary rotary cylinder is movably sleeved on the outer side of the main shaft, and both ends of the secondary rotary cylinder are fixedly connected to the drive gear. An adjustment disc spring is provided between the passive and active paddle blocks. The secondary rotary cylinder can rotate axially with the main shaft along the central axis of the main shaft. A spreading port is opened on the surface of the secondary rotary cylinder corresponding to the position of the rotary tiller blade. A baffle is fixedly connected to the back of the rotary tiller blade in close contact with the inner wall of the secondary rotary cylinder.

[0007] Preferably, a tension connecting frame is fixedly connected to the front of the main frame, and a connecting port is fixedly connected to the front of the tension connecting frame.

[0008] Preferably, the width of the spreading opening is greater than the width of the rotary tiller blades, and the arc angle of the spreading opening is consistent with the angle between the passive and active tiller blocks.

[0009] Preferably, the area of ​​the baffle is larger than the opening area of ​​the material dispensing port.

[0010] Preferably, a hinge rod is movably sleeved inside the cavity, and both ends of the hinge rod are fixedly connected to a screw-in connecting pipe.

[0011] Preferably, the two ends of the auger are symmetrically arranged, and when the auger rotates relative to the main shaft, it pushes the material from both ends toward the middle.

[0012] The present invention has the following beneficial effects:

[0013] 1. This invention adds a material box to the main frame and opens a cavity and a material distribution port in the main shaft to connect with the material box. In this way, during the deep plowing of saline-alkali land, biochar, soil conditioner and other materials are mixed into the soil while plowing, so as to improve the salt holding capacity of the soil after deep plowing and salt washing, break the vicious cycle of salt "accumulation above and stagnation below", and effectively improve the soil structure of saline-alkali land.

[0014] 2. This invention achieves real-time control of the amount of amendment mixed in by adding an auxiliary rotary drum and a spreading port to the main shaft. According to the degree of soil compaction and hardening, the rotary tiller blades are driven to rotate in the opposite direction to the auxiliary rotary drum, thereby automatically adjusting the size of the opening at the spreading port in real time according to the degree of hardening. More amendment is added to areas with severe soil compaction, while a smaller amount of amendment is added to areas with relatively mild compaction, saving materials while maximizing the efficiency of fertilizer mixing and soil improvement.

[0015] 3. By adding a secondary rotary drum and a spreading port, this invention solves the problem of blockage caused by direct contact between the spreading port and the soil. It also utilizes the change in soil resistance when the rotary tiller blades break up the compacted layer to squeeze, crush, and clean the soil adhering to the spreading port, thus avoiding the problem of the spreading port being blocked by soil during use and greatly improving the stability of the device. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of the drive box structure of the present invention;

[0018] Figure 3 This is a schematic cross-sectional view of the rotary tiller blade structure of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the overall structure of the present invention;

[0020] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle

[0021] Figure 6 For the present invention Figure 4 A magnified view of the structure at point B in the middle.

[0022] In the diagram: 1. Main frame; 101. Pulling connection frame; 102. Connection port; 2. Drive box; 3. Main shaft; 301. Material feeding port; 302. Passive pusher block; 303. Adjustment disc spring; 304. Cavity; 4. Rotary tiller blades; 401. Baffle; 5. Secondary rotary drum; 501. Spreading port; 502. Active pusher block; 503. Drive gear; 6. Material box; 601. Discharge pipe; 602. Screw-connecting connecting pipe. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-2A rotary tiller for rice-oilseed rotation in saline-alkali land with water-washing function includes a main frame 1. A traction connecting frame 101 is fixedly connected to the front of the main frame 1, and a connecting port 102 is fixedly connected to the front of the traction connecting frame 101. A drive box 2 is fixedly connected to both sides of the main frame 1. A motor is installed inside the drive box 2. A shaft bracket opening is opened on the inner side of the drive box 2, and a main shaft 3 is movably mounted through the shaft bracket opening. A passive lever 302 is fixedly connected to one side of each end of the main shaft 3. Drive gears 503 are movably sleeved at both ends of the main shaft 3. An active lever 502 is fixedly connected to the inner side of the drive gear 503. The drive gear 503 is connected to the motor gear chain in the drive box 2. When the rotary tiller is started, it drives the drive gear 503 to rotate. At this time, the active lever 502 inside the drive gear 503 rotates and drives the passive lever 302 to rotate, thereby driving the main shaft 3 to rotate. The outer periphery of the middle section of the main shaft 3... Rotary tillage blades 4 are evenly distributed. The rotation of the rotary tillage blades 4 breaks up the hard crust of the soil surface, improves soil aeration and permeability, and promotes the infiltration of leaching water. A material box 6 is fixedly installed on the top of the main frame 1. A discharge pipe 601 is set on both sides of the material box 6. A screw-connecting pipe 602 is fixedly connected to the tail end of the discharge pipe 601. The screw-connecting pipe 602 is movably sleeved to both ends of the main shaft 3. A cavity 304 is opened in the main shaft 3 so that when the main shaft 3 is driven to rotate by the drive gear 503, it does not affect the material such as biochar or soil conditioner in the material box 6 to be replenished into the cavity 304 through the discharge pipe 601. A distribution port 301 is opened on the surface of the main shaft 3. Biochar or soil conditioner and other materials fall out from the distribution port 301 as the main shaft 3 rotates, and are evenly sprinkled and mixed into the turned soil, thereby realizing soil-fertilizer mixing, improving the soil's salt-holding capacity and consolidating the soil improvement effect.

[0025] Please see Figure 3-5A secondary rotary cylinder 5 is movably sleeved on the outer side of the main shaft 3. Both ends of the secondary rotary cylinder 5 are fixedly connected to the drive gear 503. An adjusting disc spring 303 is provided between the passive paddle 302 and the active paddle 502. The secondary rotary cylinder 5 can rotate axially with the main shaft 3 along its central axis. A spreading port 501 is provided on the surface of the secondary rotary cylinder 5 corresponding to the position of the rotary tiller blade 4. The width of the spreading port 501 is greater than the width of the rotary tiller blade 4, ensuring that the rotary tiller blade 4 can rotate relative to the main shaft 3 within the spreading port 501. The arc angle of the spreading port 501 is consistent with the angle between the passive paddle 302 and the active paddle 502. When the rotary tiller blade 4 is not in contact with the soil, i.e., the rotary tiller blade... When blade 4 is not subject to the reverse resistance of the soil, the regulating spring 303 pushes the passive pusher 302 and the active pusher 502 to maintain an angular distance. At this time, the motor drives the drive gear 503 and the auxiliary rotary drum 5 to rotate. Simultaneously, the active pusher 502 pushes the passive pusher 302 through the regulating spring 303 at this angular distance, thereby driving the main shaft 3 and the rotary tiller blade 4 to rotate synchronously. At this time, the front of the rotary tiller blade 4 is in close contact with the front of the spreading port 501, and the back of the rotary tiller blade 4 is in close contact with the inner wall of the auxiliary rotary drum 5. A baffle 401 is fixedly connected thereto. The area of ​​the baffle 401 is larger than the opening area of ​​the spreading port 501. At this time, the baffle 401 closes the spreading port 501, and the cavity 3... Material falling from the feed inlet 301 into the auxiliary rotary drum 5 will not fall out from the feed outlet 501. When the rotary blades 4 contact the soft soil, the soil pushes the rotary blades 4 with relatively small resistance, causing the main shaft 3 to rotate in the opposite direction relative to the auxiliary rotary drum 5. At this time, the passive pusher block 302 compresses the regulating disc spring 303, reducing the angle between it and the active pusher block 502. At the same time, the motor drives the drive gear 503 and the auxiliary rotary drum 5 to rotate, and the active pusher block 502 pushes the passive pusher block 302 through the regulating disc spring 303 at this smaller angle. At this time, there is a small angle between the front of the rotary blades 4 and the front of the feed outlet 501, and the auxiliary rotary drum... A small amount of material can be sprinkled out and mixed into the soil. When the soil is severely compacted and the soil resistance is high, the soil resistance pushes the rotary blades 4 to increase the angle of the main shaft 3 relative to the auxiliary rotary cylinder 5, until the passive push block 302 is fully compressed and the regulating disc spring 303 is in direct contact with the active push block 502. At this time, the drive gear 503 rotates and drives the active push block 502 to directly push the passive push block 302 to rotate synchronously. At this time, the back of the rotary blades 4 is in close contact with the back of the spreading port 501, and the opening of the spreading port 501 is at its maximum, so that more biochar or soil conditioner can be mixed into the soil to improve the soil improvement effect.

[0026] Please see Figure 6As the rotary tiller turns the soil, soil easily adheres to the spreading port 501 along the rotary blades 4, blocking it and affecting the mixing of materials. When the rotary tiller blades 4 come into contact with the hard crust of saline-alkali soil, the resistance is relatively large, causing the main shaft 3 and the auxiliary rotary drum 5 to rotate in opposite directions. As the rotary blades 4 break through the hard crust of the soil surface and rotate into the soil, the soil resistance changes, causing the control spring 303 to push the passive pusher 302 to rotate relative to the active pusher 502. During this process, the main shaft 3 and the auxiliary rotary drum 5 rotate forward to break the soil, while the main shaft 3 rotates back and forth along its own axis relative to the auxiliary rotary drum 5. This causes the rotary blades 4 to move back and forth within the spreading port 501, thereby squeezing and cleaning the soil adhering to the spreading port 501, avoiding the problem of the spreading port 501 being blocked by soil during use, which would result in poor material mixing.

[0027] The cavity 304 is equipped with a movably fitted blade rod, and the two ends of the blade rod are fixedly connected to the screw-connected connecting pipe 602. During the rotation of the main shaft 3, the blade rod remains stationary with the screw-connected connecting pipe 602, thereby realizing the relative rotation between the main shaft 3 and the blade rod. The two ends of the blade rod are symmetrically arranged, so that the material introduced into the main shaft 3 from both ends can move from both ends to the middle with the relative rotation of the blade rod, and fall out evenly with the uniformly opened material outlets 301 on the main shaft 3, thereby greatly improving the uniformity of material mixing.

[0028] The working principle of the method of using this invention is as follows:

[0029] In use, add soil amendment materials such as biochar or soil conditioner to the material box 6, drive the vehicle to lift the device and drive it into the field. At this time, the rotary tiller blades 4 are not in contact with the soil, meaning they are not subject to the reverse resistance of the soil. The regulating spring 303 pushes the passive pusher 302 and the active pusher 502 to maintain an angled distance. At this time, the motor drives the drive gear 503 and the auxiliary rotary drum 5 to rotate, while the active pusher 502 pushes the passive pusher 302 at this angled distance through the regulating spring 303, thereby driving the main shaft 3 and the rotary tiller blades 4 to rotate synchronously. At this time, the front of the rotary tiller blades 4 is in close contact with the front of the spreading port 501. When the feed inlet 501 is closed, the material falling from the feed outlet 301 into the cavity 304 enters the secondary rotary drum 5 and will not fall out from the feed inlet 501. When the device is moved to the working area and lowered, the rotary tiller blades 4 come into contact with the severely compacted soil surface. The high soil resistance pushes the rotary tiller blades 4 to drive the main shaft 3 to rotate in reverse relative to the secondary rotary drum 5 until the passive pusher block 302 is fully compressed and the regulating disc spring 303 is fully compressed, so that the passive pusher block 302 is in direct contact with the active pusher block 502. At this time, the drive gear 503 rotates, which drives the active pusher block 502 to directly push the passive pusher block 302 to rotate synchronously. At this time, the back of the rotary tiller blades 4 is in contact with the feed inlet 501. With the back side tightly against the soil and the opening of the spreading port 501 at its maximum, the material is evenly spread into the soil for deep tillage and mixing. As the rotary tiller blades 4 rotate and dig down to break through the compacted layer, the soil, with relatively little resistance, pushes the rotary tiller blades 4 to drive the main shaft 3 to rotate in the opposite direction relative to the auxiliary rotary drum 5. At this time, the passive pusher block 302 compresses the regulating disc spring 303 to reduce the angle between it and the active pusher block 502. Simultaneously, the motor drives the drive gear 503 and the auxiliary rotary drum 5 to rotate, while the active pusher block 502 pushes the passive pusher block 302 at this smaller angle through the regulating disc spring 303. At this time, the front side of the rotary tiller blades 4 and the spreading port 501 are in close contact. There is a small angle between the front and back sides, allowing a small amount of material to be sprinkled out of the secondary rotary drum 5 and mixed into the soil. This enables real-time changes in the amount of material sprinkled under different soil hardness, saving materials while maximizing the efficiency of fertilizer mixing and soil improvement. As different rotary blades 4 sequentially contact and break the hard crust of the ground, the main shaft 3 and the secondary rotary drum 5 rotate forward to break the soil. At the same time, the main shaft 3 rotates back and forth relative to the secondary rotary drum 5 along its own axis, causing the rotary blades 4 to move back and forth in the spreading port 501. This squeezes and cleans the soil adhering to the spreading port 501, preventing the spreading port 501 from being blocked by soil during use.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary tiller for washing salt in saline-alkali land during rice-oil rotation, comprising a main frame (1), wherein drive boxes (2) are fixedly connected to both sides of the main frame (1), and a motor is provided inside the drive boxes (2), characterized in that: The drive box (2) has a shaft frame opening on its inner side, and the main shaft (3) is movably mounted through the shaft frame opening. A passive lever (302) is fixedly connected to one side of both ends of the main shaft (3). A drive gear (503) is movably sleeved at both ends of the main shaft (3). An active lever (502) is fixedly connected to the inner side of the drive gear (503). Rotary tillage blades (4) are evenly arranged around the middle section of the main shaft (3). A material box (6) is fixedly installed on the top of the main frame (1). A feed pipe (601) is arranged on both sides of the material box (6). A screw-connecting connecting pipe (602) is fixedly connected to the tail end of the feed pipe (601). The screw-connecting connecting pipe (602) is movably sleeved to both ends of the main shaft (3). A cavity (304) is opened inside the main shaft (3). A material feeding port (301) is opened on the surface of the main shaft (3). A secondary rotary cylinder (5) is movably sleeved on the outside of the main shaft (3). Both ends of the secondary rotary cylinder (5) are fixedly connected to the drive gear (503). An adjustment disc spring (303) is provided between the passive push block (302) and the active push block (502). The secondary rotary cylinder (5) can rotate axially with the main shaft (3) along the central axis of the main shaft (3). A sprinkling port (501) is opened on the surface of the secondary rotary cylinder (5) at the position corresponding to the rotary tiller blade (4). A baffle (401) is fixedly connected to the back of the rotary tiller blade (4) close to the inner wall of the secondary rotary cylinder (5). The opening width of the spreading port (501) is greater than the width of the rotary tiller blade (4), and the opening arc angle of the spreading port (501) is consistent with the angle between the passive pusher block (302) and the active pusher block (502). The area of ​​the baffle (401) is larger than the opening area of ​​the feeding port (501).

2. The rotary tiller for salt washing in saline-alkali land during rice-oilseed rotation according to claim 1, characterized in that: The main frame (1) is fixedly connected to a traction connecting frame (101) on the front side, and the traction connecting frame (101) is fixedly connected to a connecting port (102) on the front side.

3. The rotary tiller for salt washing in saline-alkali land during rice-oilseed rotation according to claim 1, characterized in that: The cavity (304) is movably fitted with a swivel rod, and the two ends of the swivel rod are fixedly connected to the screw-connected connecting pipe (602).

4. A rotary tiller for washing salt in saline-alkali land during rice-oilseed rotation, as described in claim 3, characterized in that: The two ends of the auger are symmetrically arranged, and when the auger rotates relative to the main shaft (3), it pushes the material from both ends to the middle.

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