Rotary cultivator for salt washing with water in rice-oil rotation crop saline-alkali soil

Abstract

The invention relates to the technical field of saline-alkali soil improvement machinery, and discloses a rotary cultivator for salt washing with water in rice-oil tanker saline-alkali soil, the rotary cultivator comprises a main frame, driving boxes are fixedly connected to two sides of the main frame, motors are arranged in the driving boxes, shaft bracket openings are formed in the inner sides of the driving boxes, and a main shaft is movably erected through the shaft bracket openings; driven shifting blocks are fixedly connected to one sides of the two ends of the main shaft, the two ends of the main shaft are movably sleeved with driving gears, driving shifting blocks are fixedly connected to the inner sides of the driving gears, rotary tillage blades are evenly arranged on the periphery of the middle section of the main shaft, and a material box is fixedly installed at the top of the main frame. The material box is additionally arranged on the main frame, and the cavity and the material distribution opening are formed in the main shaft and communicate with the material box, so that in the deep ploughing process of the saline-alkali soil, improved materials are mixed into soil while the soil is turned, the salt holding capacity of the soil after deep ploughing and salt leaching is improved, the circulation of'upper accumulation and lower stagnation 'of salt is broken, and the soil structure of the saline-alkali soil is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of saline-alkali land improvement machinery, in particular to a rotary tiller for washing salt in rice-oil rotation saline-alkali land. Background Art

[0002] In the management of saline-alkali land, since the surface 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 cause lateral water runoff and cannot effectively infiltrate and leach salt. Therefore, rotary tillage before salt washing is a key pretreatment step. Its core purpose is to improve the soil structure through physical means, break the surface hard crust, improve soil permeability and permeability, promote the infiltration of leaching water, turn the surface high-salt soil to the deep layer, turn the deep low-salt soil to the surface, reduce the salt concentration of the tillage layer, mix organic fertilizers or amendments (such as gypsum), promote the formation of soil aggregate structure, and create favorable conditions for subsequent leaching and desalination.

[0003] However, most of the existing rotary tillers are tilling machines that are matched with tractors to complete plowing and harrowing operations. They are inconvenient to use for pretreatment work before soil improvement and salt washing, and lack a matching mixing structure to improve the soil structure. A previous utility model patent with application number 201922470414.1 disclosed a mixing type rotary tiller. Although the rotary tiller is provided with a fertilization device, the setting position of the fertilization hole is spaced apart from the rotary tiller, resulting in poor fertilizer mixing effect, and synchronous fertilizer mixing cannot be achieved during rotary tillage; the discharge amount is fixed and uncontrollable, and the effect of free regulation of the discharge amount under different soil conditions cannot be achieved. Summary of the invention

[0004] The invention aims at the shortcomings of the existing rotary tiller for washing salt with water in the background technology during use.

[0005] The present invention provides the following technical solution: a rotary tiller for washing salt in saline-alkali land with rice-oil rotation, comprising a main frame, drive boxes are fixedly connected on both sides of the main frame, a motor is arranged in the drive box, an axle frame opening is opened on the inner side of the drive box, and a main shaft is movably mounted through the axle frame opening, a passive shift block is fixedly connected to one side of both ends of the main shaft, drive gears are movably sleeved on both ends of the main shaft, an active shift block is fixedly connected on the inner side of the drive gear, rotary tilling blades are evenly arranged on the periphery of the middle section of the main shaft, a material box is fixedly installed on the top of the main frame, feeding pipes are arranged on both sides of the material box, a rotary connecting pipe is fixedly connected to the tail end of the feeding pipe, the rotary connecting pipe is movably sleeved to the two ends of the main shaft, a cavity is opened in the main shaft, and a material distribution opening is opened on the surface of the main shaft.

[0006] Preferably, a secondary rotor is movably sleeved on the outer side of the main shaft, both ends of the secondary rotor are fixedly connected to the driving gear, a regulating disc spring is provided between the passive shift block and the active shift block, the secondary rotor can rotate axially with the main shaft along the central axis of the main shaft, a material spreading port is provided on the surface of the secondary rotor corresponding to the position of the rotary tiller blade, and a baffle is fixedly connected to the back side of the rotary tiller blade tightly against the inner wall of the secondary rotor.

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

[0008] Preferably, the width of the spreading opening is greater than the width of the rotary tillage blade, and the arc angle of the spreading opening is consistent with the angle between the passive shifting block and the active shifting block.

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

[0010] Preferably, a twisted blade rod is provided in the movable sleeve in the cavity, and both ends of the twisted blade rod are fixedly connected to the screw-on connecting pipe.

[0011] Preferably, the two ends of the twisting blade rod are symmetrically arranged, and when the twisting blade rod rotates relative to the main shaft, the material is pushed to move from the two ends to the middle.

[0012] The present invention has the following beneficial effects: 1. The present invention adds a material box on the main frame, and opens a cavity and a material distribution port in the main shaft to communicate with the material box, so that in the process of deep plowing of saline-alkali land, biochar, improvers 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 at the top and stagnation at the bottom", and effectively improve the soil structure of saline-alkali land.

[0013] 2. The present invention realizes real-time regulation of the amount of improved material mixed in by adding an auxiliary rotor and a spreading port outside the main shaft. According to the degree of soil compaction and hardening, the rotary tillage blade is pushed to rotate counterclockwise relative to the auxiliary rotor, thereby automatically regulating the size of the spreading port in real time according to the degree of hardening. More improvers are added to areas with severe soil compaction, while a small amount of improvers are added to relatively lighter areas, thereby saving materials and improving the maximum efficiency of mixing fertilizers and improving soil.

[0014] 3. The present invention solves the blockage problem caused by direct contact between the material distribution port and the soil by adding an auxiliary rotary drum and a material distribution port, and utilizes the change in soil resistance when the rotary tillage blade breaks the compacted layer to squeeze, crush and clean the soil adhering to the material distribution port, thereby avoiding the problem of the material distribution port being blocked by the soil during use, thereby greatly improving the use stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the drive box structure of the present invention; Figure 3 This is a schematic cross-sectional view of the rotary tillage blade structure of the present invention; Figure 4 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 5 This is the present invention Figure 3 Partial enlarged schematic view of the structure at A in the present invention Figure 6 This is the present invention Figure 4 Partial enlarged schematic view of the structure at B in the present invention.

[0016] In the figure: 1, main frame; 101, traction connecting frame; 102, connecting port; 2, drive box; 3, main shaft; 301, material distribution port; 302, passive dial block; 303, regulating coil spring; 304, cavity; 4, rotary tillage blade; 401, baffle; 5, auxiliary rotary cylinder; 501, material spreading port; 502, active dial block; 503, drive gear; 6, material box; 601, blanking pipe; 602, rotary connecting communicating pipe. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1-2A rotary tiller for washing salt in saline-alkali land with rice-oil rotation comprises a main frame 1, a pulling connecting frame 101 is fixedly connected to the front of the main frame 1, a connecting port 102 is fixedly connected to the front of the pulling connecting frame 101, a driving box 2 is fixedly connected to both sides of the main frame 1, a motor is arranged in the driving box 2, an axle frame port is opened on the inner side of the driving box 2, and a main shaft 3 is movably arranged through the axle frame port, a passive shifting block 302 is fixedly connected to one side of both ends of the main shaft 3, a driving gear 503 is movably sleeved on both ends of the main shaft 3, an active shifting block 502 is fixedly connected to the inner side of the driving gear 503, and the driving gear 503 is connected to the motor gear chain in the driving box 2, when the rotary tiller is started, the driving gear 503 is driven to rotate, at this time, the active shifting block 502 in the driving gear 503 rotates to shift the passive shifting block 302 to rotate, thereby driving the main shaft 3 to rotate, and the outer periphery of the middle section of the main shaft 3 Rotary tillage blades 4 are evenly arranged, and the rotation of the rotary tillage blades 4 breaks the hard crust on the surface of the ground, improves the air permeability and permeability of the soil, and promotes the infiltration of leaching water. A material box 6 is fixedly installed on the top of the main frame 1, and discharge pipes 601 are arranged on both sides of the material box 6. The tail end of the discharge pipe 601 is fixedly connected with a screw-on connecting pipe 602, and the screw-on connecting pipe 602 is movably sleeved to the two 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 driving gear 503, it does not affect the biochar or other materials in the material box 6 to be added into the cavity 304 through the discharge pipe 601. A distribution port 301 is opened on the surface of the main shaft 3. Materials such as biochar or 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 salt holding capacity and consolidating the soil improvement effect.

[0019] See also Figure 3-5, a secondary rotating cylinder 5 is movably sleeved outside the main shaft 3. Both ends of the secondary rotating cylinder 5 are fixedly connected to driving gears 503. A regulating disc spring 303 is arranged between the passive dial block 302 and the active dial block 502. The secondary rotating cylinder 5 can axially rotate relative to the main shaft 3 along the central axis of the main shaft 3. A material spreading opening 501 is formed on the surface of the secondary rotating cylinder 5 corresponding to the position of the rotary tillage blade 4. The width of the material spreading opening 501 is greater than the width of the rotary tillage blade 4, ensuring that the rotary tillage blade 4 can rotate relative to it along with the main shaft 3 within the material spreading opening 501. The opening radian angle of the material spreading opening 501 is the same as the included angle between the passive dial block 302 and the active dial block 502. When the rotary tillage blade 4 does not contact the soil, that is, when the rotary tillage blade 4 is not subject to the reverse resistance of the soil, the regulating disc spring 303 pushes the passive dial block 302 and the active dial block 502 to maintain an included angle spacing. At this time, while the motor drives the driving gears 503 and the secondary rotating cylinder 5 to rotate, the active dial block 502 pushes the passive dial block 302 in this included angle spacing state through the regulating disc spring 303, thereby driving the main shaft 3 and the rotary tillage blade 4 to rotate synchronously. At this time, the front surface of the rotary tillage blade 4 closely adheres to the front surface of the material spreading opening 501, and a baffle 401 is fixedly connected to the inner wall of the secondary rotating cylinder 5 at the back surface of the rotary tillage blade 4. The area of the baffle 401 is greater than the opening area of the material spreading opening 501. At this time, the baffle 401 closes the material spreading opening 501, and the material falling from the feeding port 301 into the cavity 304 will not fall out from the material spreading opening 501 into the secondary rotating cylinder 5; when the rotary tillage blade 4 contacts soft soil, the soil pushes the rotary tillage blade 4 with a small resistance to drive the main shaft 3 to reverse relative to the secondary rotating cylinder 5. At this time, the passive dial block 302 compresses the regulating disc spring 303 to reduce the included angle spacing between it and the active dial block 502. At this time, while the motor drives the driving gears 503 and the secondary rotating cylinder 5 to rotate, the active dial block 502 pushes the passive dial block 302 in this smaller included angle spacing state through the regulating disc spring 303. At this time, there is a small included angle between the front surface of the rotary tillage blade 4 and the front surface of the material spreading opening 501, and a small amount of the material in the secondary rotating cylinder 5 can be scattered and incorporated into the soil; when the soil is severely compacted resulting in a large soil resistance, the soil resistance pushes the rotary tillage blade 4 to drive the main shaft 3 to reverse relative to the secondary rotating cylinder 5 by a larger angle until the passive dial block 302 completely compresses the regulating disc spring 303 until the passive dial block 302 directly contacts the active dial block 502. At this time, the rotation of the driving gear 503 will drive the active dial block 502 to directly push the passive dial block 302 to rotate synchronously. At this time, the back surface of the rotary tillage blade 4 closely adheres to the back surface of the material spreading opening 501, and the opening of the material spreading opening 501 is in the maximum state, and more materials such as biochar or soil improvers are mixed into the soil here to improve the effect of soil improvement.

[0020] Please refer to Figure 6, as the rotary tiller tills the land, the soil easily adheres to the material spreading opening 501 along the rotary tiller blades 4 and blocks it, affecting the spreading and mixing of materials. When the rotary tiller blades 4 contact the surface crust of the saline-alkali land, the resistance is relatively large, driving the main shaft 3 and the relative auxiliary rotary cylinder 5 to rotate in the opposite direction. When the rotary tiller blades 4 break through the surface hard crust and rotate into the soil, the soil resistance changes, causing the regulating disc spring 303 to push the passive block 302 to rotate relative to the active block 502. During this process, while the main shaft 3 and the auxiliary rotary cylinder 5 rotate forward as a whole to break the soil, the main shaft 3 rotates back and forth along its own axis relative to the auxiliary rotary cylinder 5, causing the rotary tiller blades 4 to move back and forth in the material spreading opening 501, thereby squeezing and cleaning the soil adhered to the material spreading opening 501, avoiding the problem that the material spreading opening 501 is blocked by the soil during use and resulting in poor effect of incorporating materials.

[0021] Among them, a helical blade rod is movably sleeved in the cavity 304, and both ends of the helical blade rod are fixedly connected to the rotary connecting communicating pipe 602. During the rotation of the main shaft 3, the helical blade rod remains stationary with the rotary connecting communicating pipe 602, thereby realizing the relative rotation between the main shaft 3 and the helical blade rod. The two ends of the helical blade rod are symmetrically arranged, so that the materials introduced from both ends of the main shaft 3 during the working process can move from both ends to the middle with the relative rotation of the helical blade rod and uniformly fall out through the uniformly arranged cloth openings 301 on the main shaft 3, thereby greatly improving the uniformity of material mixing.

[0022] The working principle of the usage method of the present invention is as follows: In use, soil improvement materials such as biochar or modifiers are replenished into the material box 6. The driving vehicle is driven to lift the device and drive it into the field. At this time, the rotary tillage blades 4 do not contact the soil, that is, the rotary tillage blades 4 are not subject to the reverse resistance of the soil. The regulating disc spring 303 pushes the passive block 302 to maintain an angular distance from the active block 502. At this time, while the motor drives the driving gear 503 and the auxiliary rotary cylinder 5 to rotate, the active block 502 pushes the passive block 302 at this angular distance state through the regulating disc spring 303, thereby driving the main shaft 3 and the rotary tillage blades 4 to rotate synchronously. At this time, the front surface of the rotary tillage blade 4 closely adheres to the front surface of the material spreading port 501, closing the material spreading port 501. The material falling from the cloth port 301 into the cavity 304 will not fall out from the material spreading port 501 and enters the auxiliary rotary cylinder 5; when the device is lowered after moving to the working area, at this time, the rotary tillage blades 4 contact the severely soil-compacted ground surface. The large soil resistance pushes the rotary tillage blades 4 to drive the main shaft 3 to reverse relative to the auxiliary rotary cylinder 5 until the passive block 302 completely compresses the regulating disc spring 303 until the passive block 302 directly contacts the active block 502. At this time, the rotation of the driving gear 503 will drive the active block 502 to directly push the passive block 302 to rotate synchronously. At this time, the back surface of the rotary tillage blade 4 closely adheres to the back surface of the material spreading port 501, and the opening of the material spreading port 501 is in the maximum state, and the material is evenly spread into the soil for deep plowing and mixing. As the rotary tillage blades 4 rotate and dig down to break through the compacted layer, the soil pushes the rotary tillage blades 4 with less resistance to drive the main shaft 3 to reverse relative to the auxiliary rotary cylinder 5. At this time, the passive block 302 compresses the regulating disc spring 303 to reduce the angular distance between it and the active block 502. At this time, while the motor drives the driving gear 503 and the auxiliary rotary cylinder 5 to rotate, the active block 502 pushes the passive block 302 at this smaller angular distance state through the regulating disc spring 303. At this time, there is a small angle between the front surface of the rotary tillage blade 4 and the front surface of the material spreading port 501, and a small amount of the material in the auxiliary rotary cylinder 5 can be scattered and incorporated into the soil, thereby realizing the real-time change of the amount of material scattered under different soil hardnesses, saving materials while maximizing the efficiency of fertilizer mixing and soil improvement. As different rotary tillage blades 4 successively contact and break the surface crust, while the main shaft 3 and the auxiliary rotary cylinder 5 rotate forward to break the soil, the main shaft 3 makes a reciprocating rotation relative to the auxiliary rotary cylinder 5 along its own axis, so that the rotary tillage blades 4 move back and forth in the material spreading port 501, thereby squeezing and cleaning the soil adhered to the material spreading port 501, avoiding the material spreading port 501 from being blocked by soil during use.

[0023] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary tiller for washing salt in saline-alkali land with rice-oil rotation, comprising a main frame (1), a drive box (2) fixedly connected to both sides of the main frame (1), a motor being arranged in the drive box (2), and characterized in that: The inner side of the drive box (2) is provided with an axle frame opening, and a main shaft (3) is movably mounted through the axle frame opening; one side of both ends of the main shaft (3) is fixedly connected with a passive shifting block (302); both ends of the main shaft (3) are movably sleeved with a driving gear (503); the inner side of the driving gear (503) is fixedly connected with an active shifting block (502); rotary tillage blades (4) are evenly arranged on the periphery of the middle section of the main shaft (3); a material box (6) is fixedly installed on the top of the main frame (1); both sides of the material box (6) are provided with a feed pipe (601); the tail end of the feed pipe (601) is fixedly connected with a rotary connecting pipe (602); the rotary connecting pipe (602) is movably sleeved to both ends of the main shaft (3); a cavity (304) is provided in the main shaft (3); and a material dispensing opening (301) is provided on the surface of the main shaft (3).

2. The rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 1, characterized in that: The outer side of the main shaft (3) is movably sleeved with a secondary rotor (5), and both ends of the secondary rotor (5) are fixedly connected to a driving gear (503). A regulating coil spring (303) is provided between the passive shift block (302) and the active shift block (502). The secondary rotor (5) can rotate axially with the main shaft (3) along the central axis of the main shaft (3). A material spreading port (501) is provided on the surface of the secondary rotor (5) at a position corresponding to the rotary tillage blade (4), and a baffle (401) is fixedly connected to the back of the rotary tillage blade (4) in close contact with the inner wall of the secondary rotor (5).

3. A rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 1 or 2, characterized in that: A pulling connection frame (101) is fixedly connected to the front of the main frame (1), and a connection port (102) is fixedly connected to the front of the pulling connection frame (101).

4. The rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 2, characterized in that: The opening width of the spreading opening (501) is greater than the width of the rotary tillage blade (4), and the opening arc angle of the spreading opening (501) is consistent with the angle between the passive shifting block (302) and the active shifting block (502).

5. The rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 2, characterized in that: The area of ​​the baffle (401) is larger than the opening area of ​​the material spreading port (501).

6. A rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 1 or 2, characterized in that: A twisted blade rod is movably sleeved in the cavity (304), and both ends of the twisted blade rod are fixedly connected to a screw-on connecting pipe (602).

7. The rotary tiller for washing salt in saline-alkali land with water in rice-oil rotation according to claim 6, characterized in that: The two ends of the twisting blade rod are symmetrically arranged, and when the twisting blade rod rotates relative to the main shaft (3), the material is pushed to move from the two ends to the middle.

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