Rotary tillage, fertilization and seeding compound operation machine for saline-alkali soil

Abstract

The embodiment of the invention discloses a rotary tillage, fertilization and seeding compound operation machine for saline-alkali soil. A rotary tillage mechanism, a fertilization mechanism, a soil leveling mechanism, a seeding mechanism and a drip irrigation tape laying mechanism are sequentially arranged on a rack in the operation direction. The driving mechanism provides power for all the mechanisms. The rotary tillage mechanism is used for smashing hardened soil of the saline-alkali soil. The fertilizing mechanism is used for storing fertilizer and applying the fertilizer into soil. And the soil leveling mechanism is used for leveling the surface of the land after rotary tillage. The sowing mechanism is used for sowing seeds into the leveled land. And the drip irrigation tape laying mechanism is used for laying drip irrigation tapes on the sown land. According to the embodiment of the invention, the functions of rotary tillage, fertilization, soil leveling, seeding and drip irrigation tape laying are integrated, so that the improvement and seeding operation of the saline-alkali soil can be continuously completed at one time, the operation efficiency is greatly improved, the labor cost is reduced, and meanwhile, the problems of soil hardening, low fertility, difficult seedling emergence and low water utilization efficiency of the saline-alkali soil are solved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a rotary tillage, fertilization and sowing combined operation machine for saline-alkali land. Background Technology

[0002] In agricultural production on saline-alkali land, the core aspects of soil improvement and crop cultivation rely on the coordinated efforts of multiple processes, including tillage, fertilization, sowing, and irrigation.

[0003] However, current technologies mostly employ a segmented operation model, where rotary tillage, fertilization, sowing, and drip irrigation are completed by different machines or by the same machine in multiple trips, lacking integrated coordination between the various stages. Furthermore, existing equipment cannot adapt to special soil conditions such as hard, dry soda-saline soils and uneven distribution of saline-alkali barriers, exhibiting problems such as insufficient soil fragmentation, low precision, and poor adaptability. Therefore, a combined operation system of "tillage-fertilization-sowing-irrigation" is urgently needed. Summary of the Invention

[0004] This invention provides a rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land, comprising: a frame, a drive mechanism, a rotary tillage mechanism, a fertilization mechanism, a leveling mechanism, a seeding mechanism, and a drip irrigation tape laying mechanism;

[0005] Along the working direction of the rotary tillage, fertilization and sowing combined operation machine for saline-alkali land, the frame is equipped with a rotary tillage mechanism, a fertilization mechanism, a leveling mechanism, a sowing mechanism and a drip irrigation tape laying mechanism in sequence;

[0006] The drive mechanism is connected to the rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism to provide power to each mechanism;

[0007] Rotary tillage machines are used to break up compacted soil in saline-alkali land;

[0008] Fertilization facilities are used to store fertilizers and apply them to the soil;

[0009] Leveling equipment is used to level the surface of land after rotary tillage;

[0010] The seeding mechanism is used to sow seeds into leveled land;

[0011] Drip irrigation tape laying equipment is used to lay drip irrigation tape on land after sowing.

[0012] Optionally, it may also include a depth adjustment mechanism, which includes a suspension mechanism and depth positioning wheels;

[0013] The depth positioning wheel is located on the side of the rotary tillage mechanism away from the working direction;

[0014] The suspension mechanism includes a rotating arm and a first telescopic rod. One end of the rotating arm is connected to the positioning shaft of the depth positioning wheel, and the other end of the rotating arm is connected to the rotary tillage mechanism.

[0015] The first telescopic rod is mounted on the frame and is used to adjust the height of the rotary tillage mechanism with the positioning shaft as the fulcrum. During the extension and retraction process, the first telescopic rod drives the rotating arm to rotate around the positioning shaft and drives the rotary tillage mechanism to rotate, thereby adjusting the rotary tillage depth of the rotary tillage mechanism.

[0016] Optionally, the rotary tillage mechanism includes at least one set of front cutter rollers and at least one set of rear cutter rollers;

[0017] The front cutter roller and the positioning shaft rotate in opposite directions, while the rear cutter roller and the positioning shaft rotate in the same direction.

[0018] Optionally, the rotary tillage mechanism may also include a differential drive.

[0019] The differential drive device is connected to the drive mechanism for transmission. The differential drive device is used to control the ratio of the speed of the front cutter roller to the speed of the rear cutter roller to be greater than 0 and less than 1.

[0020] Optionally, the front cutter roller is equipped with multiple L-shaped cutters, and the rear cutter roller is alternately equipped with straight cutters and oblique cutters;

[0021] L-shaped cutters are staggered with straight and oblique cutters in the working direction, with an alternation distance δ=1 / 2P; where P is the pitch of the front or rear cutter roller.

[0022] Optionally, the rotation diameter of the front cutter roller is smaller than that of the rear cutter roller.

[0023] Optionally, the rotation diameter D1 of the front cutter roller, the rotation diameter D2 of the rear cutter roller, and the interaxial distance A between the front cutter roller and the rear cutter roller satisfy: D1 < 2A < (D1 + D2).

[0024] Optional, the fertilization apparatus includes a trenching shovel and at least three separate fertilizer bins;

[0025] The trenching shovel is connected to the positioning shaft, and the included angle of the shovel tip is 25°-35°;

[0026] The trenching shovel includes guide vanes, which are used to create V-shaped trenches in the soil after rotary tillage.

[0027] On the side opposite to the direction of operation, the trenching shovel is equipped with at least three fertilizer pipes;

[0028] Each independent fertilizer compartment is equipped with a servo-driven spiral fertilizer dispenser below it;

[0029] Each servo spiral fertilizer applicator is connected to a corresponding fertilizer application pipe;

[0030] Each independent fertilizer compartment is used to store different fertilizers, and each independent fertilizer compartment is connected to a corresponding fertilizer pipe;

[0031] During the extension and retraction process, the first telescopic rod synchronously drives the rotating arm and the trenching shovel to rotate around the positioning axis. When the first telescopic rod extends, the height of the rotary tillage mechanism decreases and the angle between the trenching shovel and the ground increases, so that the depth of the V-shaped trench opened by the trenching shovel increases synchronously with the fertilization depth of the fertilization mechanism.

[0032] Optionally, different fertilizer pipes have different heights.

[0033] Optionally, the independent fertilizer compartments include microbial inoculant compartments, soil conditioner compartments, and fertilization fertilizer compartments, with different volume ratios for the microbial inoculant compartments, soil conditioner compartments, and fertilization fertilizer compartments;

[0034] The microbial agent chamber is connected to a shallow fertilizer pipe, with the outlet depth of the shallow fertilizer pipe ranging from 0-15cm.

[0035] The soil conditioner compartment is connected to the fertilizer application pipe in the middle layer, and the outlet depth of the fertilizer application pipe in the middle layer ranges from 15 to 25 cm.

[0036] The fertilizer bin is connected to a deep fertilizer pipe, with the outlet depth of the deep fertilizer pipe ranging from 25 to 35 cm.

[0037] Optional, the leveling mechanism includes an active compaction roller;

[0038] The drive mechanism is used to drive the active pressure roller, and the active pressure roller and the positioning shaft rotate in the same direction.

[0039] Optionally, the ratio of the linear velocity of the active pressing roller to the forward speed of the compound machine is greater than 1.

[0040] Optionally, a soil resistance sensor may also be included;

[0041] Soil resistance sensors are used to detect the torque value of the rotary tillage mechanism in real time and calculate the real-time soil resistance based on the torque value;

[0042] The depth adjustment mechanism is also used to adjust the tillage depth of the rotary tillage mechanism and the penetration depth of the trenching shovel based on real-time soil resistance.

[0043] Optionally, a soil resistance sensor may also be included;

[0044] The soil resistance sensor includes a first torque sensor, a second torque sensor, and a resistance calculation module;

[0045] The first torque sensor is used to obtain the torque value of the front cutter roller;

[0046] The second torque sensor is used to obtain the torque value of the rear cutter roller;

[0047] The resistance calculation module is used to calculate real-time soil resistance based on the torque values ​​of the front and rear cutter rollers transmitted in a time-division manner.

[0048] Optional, the leveling mechanism includes an active compaction roller;

[0049] The drive mechanism is also used to adjust the ground pressure of the active compaction roller based on real-time soil resistance.

[0050] Optionally, the drive mechanism includes a power output structure, a gearbox, and a transmission structure assembly;

[0051] The power take-off structure is used to provide power to the gearbox;

[0052] The gearbox is used to receive power and distribute it to the transmission assembly;

[0053] The transmission structure assembly includes a transmission shaft, a first right-angle reducer, a second positioning shaft, a second right-angle reducer, a third positioning shaft, a third right-angle reducer, a fourth positioning shaft, and a fourth right-angle reducer;

[0054] The two ends of the drive shaft are connected to the input ends of the gearbox and the first right-angle reducer, respectively;

[0055] The output end of the first right-angle reducer is connected to the second positioning shaft and the second right-angle reducer via transmission.

[0056] The output end of the second right-angle reducer is connected to the third right-angle reducer via the third positioning shaft;

[0057] The output end of the third right-angle reducer is connected to the fourth right-angle reducer via the fourth positioning shaft;

[0058] The output end of the fourth right-angle reducer is connected to the active pressure roller drive;

[0059] The fourth positioning axis is a telescopic structure that can extend and retract along the extension direction of the fourth positioning axis;

[0060] When the active pressing roller encounters undulating terrain, the third right-angle reducer rotates around the third positioning shaft axis, and the fourth positioning shaft extends and retracts along the extension direction of the fourth positioning shaft to ensure continuous power transmission of the active pressing roller.

[0061] Optionally, the drip irrigation tape laying mechanism includes drip irrigation tape wheels and drip irrigation tape laying devices;

[0062] The drip irrigation belt pulley is mounted on the frame, and its position in the working direction is used to balance the torque of the combined machine in the working direction. The drip irrigation belt pulley is used to support and release the drip irrigation belt.

[0063] The drip irrigation tape laying device is located on the side of the sowing mechanism away from the working direction. The drip irrigation tape laying device is used to receive the drip irrigation tape released by the drip irrigation tape wheel and to lay the drip irrigation tape after the sowing mechanism has completed its work.

[0064] The rotary tillage, fertilization, and sowing combined operation machine for saline-alkali land provided in this embodiment of the invention includes: a frame, a drive mechanism, a rotary tillage mechanism, a fertilization mechanism, a leveling mechanism, a sowing mechanism, and a drip irrigation tape laying mechanism. The rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism are sequentially arranged on the frame along the working direction of the rotary tillage, fertilization, and sowing combined operation machine for saline-alkali land. The drive mechanism is connected to the rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism for transmission, and is used to provide power to each mechanism. The rotary tillage mechanism is used to crush the compacted soil of saline-alkali land to break up the soil crust, improve permeability, and create a good seedbed for subsequent operations. The fertilization mechanism is used to store fertilizer and apply fertilizer into the soil to accurately replenish soil nutrients before sowing and improve soil fertility. The leveling mechanism is used to level the land surface after rotary tillage to eliminate furrows and clods, forming a uniform and flat working surface to ensure consistent sowing depth. The sowing mechanism is used to sow seeds into the leveled land to achieve precision sowing and reasonable distribution, improving germination rate and crop uniformity. The drip irrigation tape laying mechanism is used to lay drip irrigation tape on the sown land to achieve precise water and fertilizer supply, saving water and alleviating saline-alkali stress. This invention integrates rotary tillage, fertilization, leveling, sowing, and drip irrigation tape laying functions into one unit, enabling continuous completion of saline-alkali land improvement and sowing operations in one go. This significantly improves operational efficiency, reduces labor costs, and solves the problems of soil compaction, low fertility, difficult germination, and low water use efficiency in saline-alkali land. It effectively promotes crop establishment and growth in saline-alkali land and enhances the comprehensive utilization benefits of land. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the structure of a rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land provided in an embodiment of the present invention;

[0066] Figure 2 This is a schematic diagram of another rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land provided in an embodiment of the present invention;

[0067] Figure 3 This is a schematic diagram of a rotary tillage mechanism provided in an embodiment of the present invention;

[0068] Figure 4 This is a schematic diagram of another rotary tillage mechanism provided in an embodiment of the present invention;

[0069] Figure 5 This is a schematic diagram of the structure of a trenching shovel provided in an embodiment of the present invention;

[0070] In the picture:

[0071] 10. Frame; 20. Drive mechanism; 22. Gearbox; 230. Drive shaft; 231. First right-angle reducer; 232. Second positioning shaft; 233. Second right-angle reducer; 234. Third positioning shaft; 235. Third right-angle reducer; 236. Fourth positioning shaft; 237. Fourth right-angle reducer; 30. Rotary tillage mechanism; 31. Front cutter roller; 311. L-shaped cutter; 32. Rear cutter roller; 33. Differential drive device; 40. Fertilizer applicator; 41. Ditching mechanism. 411. Shovel, 412. Guide wing plate, 42. Fertilizer pipe, 42. Independent fertilizer bin, 422. Microbial agent bin, 423. Soil conditioner bin, 424. Fertilizer bin; 50. Leveling mechanism, 51. Active compaction roller; 60. Sowing mechanism; 70. Drip irrigation tape laying mechanism, 71. Drip irrigation tape wheel, 72. Drip irrigation tape laying device; 80. Depth adjustment mechanism, 81. Suspension mechanism, 811. Rotating arm, 812. First telescopic rod, 82. Depth positioning wheel. Detailed Implementation

[0072] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0073] Figure 1 This is a schematic diagram of a rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land provided in an embodiment of the present invention, with reference to... Figures 1-2 The rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land provided in this embodiment of the invention includes: a frame 10, a drive mechanism 20, a rotary tillage mechanism 30, a fertilization mechanism 40, a leveling mechanism 50, a seeding mechanism 60, and a drip irrigation tape laying mechanism 70. The rotary tillage mechanism 30, fertilization mechanism 40, leveling mechanism 50, seeding mechanism 60, and drip irrigation tape laying mechanism 70 are sequentially arranged on the frame 10 along the operating direction of the rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land. The drive mechanism 20 is connected to the rotary tillage mechanism 30, fertilization mechanism 40, leveling mechanism 50, seeding mechanism 60, and drip irrigation tape laying mechanism 70, and is used to provide power to each mechanism. The rotary tillage mechanism 30 is used to crush the compacted soil of saline-alkali land. The fertilization mechanism 40 is used to store fertilizer and apply fertilizer to the soil. The leveling mechanism 50 is used to level the surface of the land after rotary tillage. The seeding mechanism 60 is used to sow seeds into the leveled land. The drip irrigation tape laying mechanism 70 is used to lay drip irrigation tape on the land after sowing.

[0074] Specifically, each mechanism is mounted on the frame 10 and arranged sequentially along the working direction as follows: rotary tillage mechanism 30, fertilization mechanism 40, leveling mechanism 50, sowing mechanism 60, and drip irrigation tape laying mechanism 70. The drive mechanism 20 maintains a transmission connection with all of the above mechanisms. When the equipment enters the working state, the drive mechanism 20 outputs power to drive the rotary tillage mechanism 30 to operate and crush the compacted soil of the saline-alkali land. After the rotary tillage mechanism 30 completes the soil crushing, the fertilization mechanism 40 applies the stored fertilizer into the crushed soil, and the leveling mechanism 50 smooths the uneven land surface after rotary tillage and fertilization to avoid uneven sowing depth in the subsequent process. After the land is leveled, the sowing mechanism 60 sows the seeds into the leveled land. After sowing, the drip irrigation tape laying mechanism 70 lays drip irrigation tape on the sown land. Throughout the process, each mechanism, supported by the power of the drive mechanism 20, works in sequence according to the working order to achieve integrated operation from soil pretreatment, fertilization, land preparation to sowing and irrigation preparation.

[0075] The rotary tillage, fertilization, and sowing combined operation machine for saline-alkali land provided in this embodiment of the invention includes: a frame, a drive mechanism, a rotary tillage mechanism, a fertilization mechanism, a leveling mechanism, a sowing mechanism, and a drip irrigation tape laying mechanism. The rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism are sequentially arranged on the frame along the working direction of the rotary tillage, fertilization, and sowing combined operation machine for saline-alkali land. The drive mechanism is connected to the rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism for transmission, and is used to provide power to each mechanism. The rotary tillage mechanism is used to crush the compacted soil of saline-alkali land to break up the soil crust, improve permeability, and create a good seedbed for subsequent operations. The fertilization mechanism is used to store fertilizer and apply fertilizer into the soil to accurately replenish soil nutrients before sowing and improve soil fertility. The leveling mechanism is used to level the land surface after rotary tillage to eliminate furrows and clods, forming a uniform and flat working surface to ensure consistent sowing depth. The sowing mechanism is used to sow seeds into the leveled land to achieve precision sowing and reasonable distribution, improving germination rate and crop uniformity. The drip irrigation tape laying mechanism is used to lay drip irrigation tape on the sown land to achieve precise water and fertilizer supply, saving water and alleviating saline-alkali stress. This invention integrates rotary tillage, fertilization, leveling, sowing, and drip irrigation tape laying functions into one unit, enabling continuous completion of saline-alkali land improvement and sowing operations in one go. This significantly improves operational efficiency, reduces labor costs, and solves the problems of soil compaction, low fertility, difficult germination, and low water use efficiency in saline-alkali land. It effectively promotes crop establishment and growth in saline-alkali land and enhances the comprehensive utilization benefits of land.

[0076] Continue to refer to Figure 1In an optional embodiment, a depth adjustment mechanism 80 is further included, comprising a suspension mechanism 81 and a depth positioning wheel 82. The depth positioning wheel 82 is located on the side of the rotary tillage mechanism 30 opposite to the working direction. The suspension mechanism 81 includes a rotating arm 811 and a first telescopic rod 812. One end of the rotating arm 811 is connected to the drive shaft 230 of the depth positioning wheel 82, and the other end of the rotating arm 811 is connected to the rotary tillage mechanism 30. The first telescopic rod 812 is mounted on the frame 10 and is used to adjust the height of the rotary tillage mechanism 30 with the drive shaft 230 as the fulcrum. During the extension and retraction process, the first telescopic rod 812 drives the rotating arm 811 to rotate around the drive shaft 230, thereby rotating the rotary tillage mechanism 30 to adjust the tillage depth of the rotary tillage mechanism 30.

[0077] Specifically, the depth positioning wheel 82 of the depth adjustment mechanism 80 (i.e., the front wheel of the rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land) is located on the side of the rotary tillage mechanism 30 away from the working direction. The two ends of the rotating arm 811 of the suspension mechanism 81 are respectively connected to the drive shaft 230 of the depth positioning wheel 82 and the rotary tillage mechanism 30. The first telescopic rod 812 is fixed on the frame 10. When it is necessary to adjust the rotary tillage depth, the first telescopic rod 812 begins to extend and retract. Since it is fixed to the frame 10 and the rotating arm 811 uses the drive shaft 230 as the fulcrum, the extension and retraction force of the first telescopic rod 812 will drive the rotating arm 811 to rotate around the drive shaft 230. When the rotating arm 811 rotates, it will drive the rotary tillage mechanism 30 connected to it to rotate synchronously, so that the rotary tillage mechanism 30 moves away from or closer to the ground with the depth positioning wheel 82 as the reference. When the rotary tillage mechanism 30 is adjusted to the target depth, the first telescopic rod 812 stops extending and retracting and maintains the current length, thereby controlling the rotary tillage depth and ensuring the rotary tillage effect.

[0078] Figure 3 This is a schematic diagram of a rotary tillage mechanism provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of another rotary tillage mechanism provided in an embodiment of the present invention, with reference to... Figures 3-4 In an optional embodiment, the rotary tillage mechanism 30 includes at least one set of front cutter rollers 31 and at least one set of rear cutter rollers 32. The front cutter rollers 31 and the drive shaft 230 rotate in opposite directions, while the rear cutter rollers 32 and the drive shaft 230 rotate in the same direction.

[0079] Specifically, the front cutter roller 31 and the rear cutter roller 32 of the rotary tillage mechanism 30 are arranged sequentially along the working direction, with the front cutter roller 31 rotating in the opposite direction to the drive shaft 230 and the rear cutter roller 32 rotating in the same direction as the drive shaft 230. During operation, because the front cutter roller 31 rotates in the opposite direction to the drive shaft 230, its blades act on the compacted soil of saline-alkali floor in a "reverse cutting" manner, breaking the hard crust on the surface of the soil and initially crushing the large compacted soil clods. At the same time, the compacted soil clods are thrown towards the rear cutter roller 32, which performs secondary rotary tillage on the soil after it has been crushed by the front cutter roller 31, further crushing the remaining small pieces of compacted soil. Throughout the process, the cooperation between the front cutter roller 31 and the rear cutter roller 32 improves the looseness of the soil through secondary operation, ensuring the quality of rotary tillage.

[0080] Continue to refer to Figures 3-4 In an optional embodiment, the rotary tillage mechanism 30 further includes a differential drive device 33. The differential drive device 33 is connected to the drive mechanism 20 and is used to control the ratio of the rotational speed of the front cutter roller 31 to the rotational speed of the rear cutter roller 32 to be greater than 0 and less than 1.

[0081] One end of the differential drive device 33 is connected to the drive mechanism 20 that provides power, and the other end is connected to the front cutter roller 31 and the rear cutter roller 32 respectively. It can transmit power to both at the same time and adjust the speed independently. When the drive mechanism 20 starts and outputs power to the differential drive device 33, the differential drive device 33 receives the power and transmits power at different speeds to the front cutter roller 31 and the rear cutter roller 32 according to the preset speed ratio. Taking a constant speed ratio of 1:1.25 as an example, the differential drive device 33 controls the speed of the front cutter roller 31 to be 0.8 times that of the rear cutter roller 32. That is, the front cutter roller 31 operates at low speed and the rear cutter roller 32 operates at high speed. The low-speed front cutter roller 31 can act on the compacted soil of saline-alkali land with greater torque, more easily break up large pieces of hard soil, and avoid damage caused by violent collision between the blades and hard soil due to high-speed operation. The high-speed rear cutter roller 32 can use high speed to quickly and finely crush and mix the soil after it has been crushed by the front cutter roller 31, improve the looseness and uniformity of the soil, ensure the crushing effect of compacted soil, improve soil treatment efficiency, and reduce the wear and tear of the cutter roller components, so as to better adapt to the rotary tillage operation needs of saline-alkali land.

[0082] Continue to refer to Figures 3-4 In an optional embodiment, the front cutter roller 31 is provided with a plurality of L-shaped cutters 311, and the rear cutter roller 32 is provided with alternating straight cutters and oblique cutters. The L-shaped cutters 311 are staggered with the straight cutters and oblique cutters in the working direction, and the staggering distance is δ=1 / 2P. Wherein, P is the pitch of the front cutter roller 31 or the rear cutter roller 32.

[0083] Specifically, multiple L-shaped cutters 311 are fixed on the front cutter roller 31, and straight cutters and oblique cutters are alternately installed on the rear cutter roller 32. The L-shaped cutters 311 and the straight cutters and oblique cutters of the rear cutter roller 32 are staggered in the working direction, with an alternation distance δ=1 / 2P. When the drive mechanism 20 drives the front cutter roller 31 and the rear cutter roller 32 to operate at a preset speed via the differential drive device 33, the L-shaped cutter 311 of the front cutter roller 31 first contacts the compacted soil of the saline-alkali land. With the mechanical advantage of the L-shaped structure, it breaks up large pieces of compacted soil with a large cutting force. At the same time, the setting of the pitch P ensures the coverage density of the L-shaped cutter 311, avoiding missed cuts. Subsequently, the straight cutter and the oblique cutter of the rear cutter roller 32 work in succession. The straight cutter cuts the remaining small pieces of compacted soil in a straight line, while the oblique cutter assists in cutting and turning the soil from the inclined direction. The two work together to reduce the blind spots in soil treatment. At the same time, since the staggered spacing between the L-shaped cutter 311 and the straight and oblique cutters is 1 / 2P, the soil areas not completely covered by the front cutter roller 31 are precisely treated by the cutter of the rear cutter roller 32. This ensures that the compacted soil is fully broken up, while improving the uniformity of soil mixing, providing a high-quality soil foundation for subsequent fertilization and sowing.

[0084] Continue to refer to Figures 3-4 In an optional embodiment, the rotation diameter of the front cutter roller 31 is smaller than the rotation diameter of the rear cutter roller 32.

[0085] Specifically, the front cutter roller 31 has a smaller rotating diameter and a relatively shallower penetration depth, allowing for preliminary shallow crushing of the surface compacted soil layer. This avoids excessive load on the cutter roller and increased power loss due to excessive penetration at once. Subsequently, the rear cutter roller 32, with a larger rotating diameter, continues the operation. The rear cutter roller 32 penetrates deeper than the front cutter roller, enabling secondary refinement of the soil after crushing by the front cutter roller. This not only breaks up the remaining deep compacted soil but also mixes and blends the shallow soil crushed by the front cutter roller with the deep soil, preventing soil stratification. At the same time, combined with the staggered spacing design of the L-shaped cutter and the straight and oblique cutters, the larger rotating diameter of the rear cutter roller can further expand the soil treatment range and compensate for any blind spots that may exist due to the smaller diameter of the front cutter roller.

[0086] For example, the rotation diameter of the front cutter roller 31 is D1=380mm and the rotation diameter of the rear cutter roller 32 is D2=420mm.

[0087] Continue to refer to Figures 3-4 In an optional embodiment, the rotation diameter D1 of the front cutter roller 31, the rotation diameter D2 of the rear cutter roller 32, and the interaxial distance A between the front cutter roller 31 and the rear cutter roller 32 satisfy: D1 < 2A < (D1 + D2).

[0088] Specifically, the front cutter roller 31 and the rear cutter roller 32 of the rotary tillage mechanism 30 are arranged along the working direction with a shaft distance of A, and satisfying D1<2A<(D1+D2). Since A>D1 / 2, a safe distance is always maintained between the roller shafts of the front cutter roller 31 and the rear cutter roller 32 to avoid collision or friction between the front cutter roller and the rear cutter roller shaft during rotation. At the same time, since A<(D1+D2) / 2, the working trajectory of the front cutter roller 31 will partially overlap with the working trajectory of the rear cutter roller 32 in the soil treatment area. This allows the soil treated by the front cutter roller 31 to be thrown to the rear cutter roller 32 for secondary crushing and turning, thereby reducing the possible blind spots in soil treatment between the front and rear cutter rollers.

[0089] Figure 5 This is a schematic diagram of a trenching shovel provided in an embodiment of the present invention. (Continue referring to...) Figure 1 and Figure 5 In an optional embodiment, the fertilization mechanism 40 includes a trenching shovel 41 and at least three independent fertilizer bins 42. The trenching shovel 41 is connected to the drive shaft 230, and the included angle of the shovel tip is 25°-35°. The trenching shovel 41 includes a guide vane 411, which is used to create V-shaped trenches in the soil after rotary tillage. On the side opposite to the working direction, the trenching shovel 41 is provided with at least three fertilizer pipes 412. A servo spiral fertilizer dispenser is provided below each independent fertilizer bin 42. Each servo spiral fertilizer dispenser is connected to one fertilizer pipe 412. Each independent fertilizer bin 42 is used to store different fertilizers, and each independent fertilizer bin 42 is connected to one fertilizer pipe 412. During the extension and retraction of the first telescopic rod 812, it synchronously drives the rotating arm 811 and the trenching shovel 41 to rotate around the drive shaft 230. When the first telescopic rod 812 extends, the height of the rotary tillage mechanism 30 decreases and the angle between the trenching shovel 41 and the ground increases, so that the depth of the V-shaped trench opened by the trenching shovel 41 increases synchronously with the fertilization depth of the fertilization mechanism 40.

[0090] Specifically, the trenching shovel 41 of the fertilization mechanism 40 is connected to the drive shaft 230, and the soil guide wing plate 411 on it is used to form a V-shaped trench. At least three fertilizer pipes 412 are provided on the side away from the working direction, and the fertilizer pipes 412 are connected one by one to the servo spiral fertilizer dispenser below the independent fertilizer bin 42. During the rotation of the first telescopic rod 812 around the drive shaft 230, the trenching shovel 41 rotates synchronously with the drive arm 811. When the rotary tillage mechanism 30 descends synchronously with the drive arm 811, the trenching shovel 41 connected to the drive shaft 230 also rotates synchronously with the drive arm 811. At this time, the angle between the trenching shovel 41 and the ground increases, it penetrates deeper into the soil, and the depth of the trench increases accordingly. Because the fertilizer pipe 412 moves synchronously with the trenching shovel 41, the fertilization depth of the fertilizer application mechanism 40 also increases synchronously. Subsequently, different types of fertilizer in each independent fertilizer bin 42 are quantitatively discharged through the corresponding servo spiral fertilizer dispenser below, and transported to the deep V-shaped trench opened by the trenching shovel 41 through the fertilizer pipe 412 connected to it. Throughout the process, the trenching shovel 41 and the rotary tillage mechanism 30 achieve depth linkage adjustment through the drive arm 811 without the need for additional drive components.

[0091] Continue to refer to Figure 1 In an optional embodiment, different fertilizer pipes 412 have different heights.

[0092] Specifically, the trenching shovel 41 of the fertilization mechanism 40 is provided with at least three fertilizer pipes 412 on the side opposite to the working direction. Each fertilizer pipe 412 is connected to a servo spiral fertilizer dispenser below the independent fertilizer bin 42. The height of each fertilizer pipe 412 is different, so as to deliver fertilizers with different functions to soil layers of different depths.

[0093] Continue to refer to Figure 1 In an optional embodiment, the independent fertilizer compartment 42 includes a microbial agent compartment 422, a soil conditioner compartment 423, and a fertilization fertilizer compartment 424, with different volume ratios. The microbial agent compartment 422 is connected to a shallow fertilization pipe 412, with an outlet depth ranging from 0 to 15 cm. The soil conditioner compartment 423 is connected to a middle-layer fertilization pipe 412, with an outlet depth ranging from 15 to 25 cm. The fertilization fertilizer compartment 424 is connected to a deep fertilization pipe 412, with an outlet depth ranging from 25 to 35 cm.

[0094] Specifically, the independent fertilizer bin 42 includes a microbial agent bin 422, a soil conditioner bin 423, and a fertilizer bin 424, with a volume ratio of 1:1.5:2. They are connected to fertilizer pipes 412 at different depths on the trenching shovel 41 through corresponding servo spiral fertilizer dispensers. During fertilization, each independent fertilizer bin activates its servo spiral fertilizer dispenser according to operational needs: the microbial agent bin 422 is transported via the servo spiral fertilizer dispenser to the shallow fertilization pipe 412, and then injected into the shallow layer of the trench from the 0-15cm depth outlet—this depth is close to the soil surface, which facilitates the contact of the microbial agent with the air and the crop seedling roots, allowing the microbial activity to improve the surface soil; the soil conditioner bin 423 is transported to the middle fertilization pipe 412, and then injected into the middle layer of the trench from the 15-25cm depth outlet—this depth is the area where salt easily accumulates in saline-alkali soil, and the conditioner can directly act on the saline soil layer to reduce soil salinity; the fertilization fertilizer bin 424 is transported to the deep fertilization pipe 412, and then injected into the deep layer of the trench from the 25-35cm depth outlet—deep fertilizer can provide continuous nutrients for crop root growth and avoid the loss of shallow fertilizer during irrigation.

[0095] Continue to refer to Figures 1-2 In an optional embodiment, the leveling mechanism 50 includes an active pressing roller 51. A drive mechanism 20 drives the active pressing roller 51, and the active pressing roller 51 and the drive shaft 230 rotate in the same direction.

[0096] Specifically, the active compaction roller 51 of the leveling mechanism 50 is located behind the fertilization mechanism 40 along the working direction and is connected to the drive mechanism 20. Its rotation direction is consistent with that of the drive shaft 230. During the leveling operation, the drive mechanism 20 outputs power to drive the active compaction roller 51 to rotate. The active compaction roller 51 compacts the uneven ground surface through the forward driving force and downward pressure generated by its own rotation, compacting the loose soil after rotary tillage to a suitable compaction degree. At the same time, it further levels any clods and gullies that may appear after fertilization, eliminating surface undulations.

[0097] It should be noted that the rotation direction of the active compaction roller 51 is consistent with that of the drive shaft 230 and the same as the overall working direction of the machine. This reduces the reverse pushing of the soil and avoids the formation of new soil ridges or depressions. Compared with the passive compaction structure, it can adapt to changes in soil hardness more efficiently, ensuring a uniform leveling effect. This provides the sowing mechanism 60 with a flat and appropriately compacted working surface, which is suitable for the needs of stabilizing the sowing environment after the improvement of saline-alkali soil and improves the subsequent sowing quality.

[0098] In an optional embodiment, the ratio of the linear velocity of the active pressing roller 51 to the forward speed of the compound machine is greater than 1.

[0099] Specifically, the ratio of the linear velocity of the active compaction roller 51 to the forward speed of the equipment is set to 1.25. Since the linear velocity of the active compaction roller 51 is greater than the forward speed of the equipment, the linear velocity of the rotation below the active compaction roller 51 is opposite to the operating speed to reduce relative speed and soil disturbance. It can not only compact the surface layer, but also push the loose soil on the surface forward through forward friction, fill low-lying areas and flatten protrusions, enhancing the leveling effect. At the same time, the faster linear velocity can reduce the contact time between the compaction roller and the soil, avoiding excessive soil compaction due to prolonged rolling, which is especially suitable for soils that need to maintain a certain degree of aeration after improvement of saline-alkali land.

[0100] In an optional embodiment, a soil resistance sensor is also included. The soil resistance sensor is used to detect the torque value of the rotary tillage mechanism 30 in real time and calculate the real-time soil resistance based on the torque value. The depth adjustment mechanism 80 is also used to adjust the tillage depth of the rotary tillage mechanism 30 and the soil penetration depth of the trenching shovel 41 according to the real-time soil resistance.

[0101] Specifically, the soil resistance sensor is used to detect the torque of the rotary tillage mechanism 30, and then adjusts the rotary tillage depth and the soil penetration depth of the trenching shovel 41 through the depth adjustment mechanism 80 to form a closed-loop control. During equipment operation, the soil resistance sensor monitors the torque value of the rotary tillage mechanism 30 in real time and calculates the real-time soil resistance. If an increase in soil resistance is detected, such as when encountering a hard, compacted layer in saline-alkali soil, the depth adjustment mechanism 80 receives the signal and controls the first telescopic rod 812 to shorten, driving the rotating arm 811 to rotate around the transmission shaft 230, causing the height of the rotary tillage mechanism 30 to rise, thereby reducing the rotary tillage depth. At the same time, the soil penetration depth of the trenching shovel 41 decreases with the linkage structure. Conversely, if a decrease in soil resistance is detected, the depth adjustment mechanism 80 controls the first telescopic rod 812 to extend, the height of the rotary tillage mechanism 30 to drop, and the trenching shovel 41 synchronously increases its soil penetration depth to ensure that soil breaking and trenching depth meet the operational requirements.

[0102] In an optional embodiment, a soil resistance sensor is also included. The soil resistance sensor includes a first torque sensor, a second torque sensor, and a resistance calculation module. The first torque sensor is used to acquire the torque value of the front cutter roller 31. The second torque sensor is used to acquire the torque value of the rear cutter roller 32. The resistance calculation module is used to calculate real-time soil resistance based on the time-division transmitted torque values ​​of the front cutter roller 31 and the rear cutter roller 32.

[0103] Specifically, the first torque sensor is used to acquire the torque of the front cutter roller 31, and the second torque sensor is used to acquire the torque of the rear cutter roller 32. During equipment operation, the front cutter roller 31 and the rear cutter roller 32 operate according to preset directions and speeds. The first torque sensor collects the torque value of the front cutter roller 31 in real time, reflecting the resistance of initially breaking up compacted soil. The second torque sensor simultaneously collects the torque value of the rear cutter roller 32, reflecting the resistance of secondary soil refinement. The two sensors transmit the torque data to the resistance calculation module in a time-division manner. The module combines the structural parameters of the front and rear cutter rollers with the operating sequence to perform weighted calculations on the two sets of torque values, obtaining a real-time value that comprehensively reflects the overall soil resistance. By collecting the resistance of the front and rear cutter rollers and calculating the real-time soil resistance in a time-division manner, a more accurate real-time soil resistance is obtained, making the response of the depth adjustment mechanism more consistent with the actual soil conditions. This further enhances the equipment's adaptability to complex soil layers in saline-alkali land and ensures the stability of rotary tillage and fertilization quality.

[0104] In an optional embodiment, if the calculation result shows that the resistance is too high, the resistance calculation module transmits a signal to the depth adjustment mechanism 80 to trigger the first telescopic rod 812 to reduce the rotary tillage and ditching depth; conversely, if the resistance is too low, the depth is increased.

[0105] In an optional embodiment, the leveling mechanism 50 includes an active compaction roller 51. The drive mechanism 20 is also used to adjust the ground pressure of the active compaction roller 51 according to real-time soil resistance.

[0106] Specifically, the soil resistance sensor acquires the torque values ​​of the front and rear cutter rollers through the first and second torque sensors, and the real-time soil resistance is obtained through the resistance calculation module. The hydraulic cylinder is hinged to the compaction roller bracket, and the stress pin is connected at the hinge to provide feedback on the compaction pressure. The proportional control valve responds to the control terminal command to adjust the compaction intensity range (50-200kPa). If the real-time soil resistance is high, the drive mechanism 20 increases the ground pressure of the active compaction roller 51, so that the compaction roller can more powerfully compact the soil clods and ensure the surface is flat. If the real-time soil resistance is low, the drive mechanism 20 decreases the ground pressure of the active compaction roller 51 to avoid excessive compaction that reduces soil permeability and avoids pressure changes caused by adjusting the depth of the hydraulic cylinder when the soil is soft or hard, ensuring a constant compaction pressure. This allows the leveling effect to be accurately matched with the soil condition, improving the equipment's adaptability to the variable soil environment of saline-alkali land.

[0107] Continue to refer to Figure 2In an optional embodiment, the drive mechanism 20 includes a power output structure, a gearbox 22, and a transmission structure assembly. The power output structure provides power to the gearbox 22. The gearbox 22 receives power and distributes it to the transmission structure assembly 23. The transmission structure assembly 23 includes a drive shaft 230, a first right-angle reducer 231, a second positioning shaft 232, a second right-angle reducer 233, a third positioning shaft 234, a third right-angle reducer 235, a fourth positioning shaft 236, and a fourth right-angle reducer 237. The two ends of the drive shaft 230 are respectively connected to the gearbox 22 and the input end of the first right-angle reducer 231. The output end of the first right-angle reducer 231 is driven through the second positioning shaft 232 and the second right-angle reducer 233. The output end of the second right-angle reducer 233 is driven through the third positioning shaft 234 and the third right-angle reducer 235. The output end of the third right-angle reducer 235 is driven through the fourth positioning shaft 236 and the fourth right-angle reducer 237. The output end of the fourth right-angle reducer 237 is connected to the active pressing roller 51. The fourth positioning shaft 236 is a telescopic structure that can extend and retract along its extension direction. When the active pressing roller 51 encounters terrain undulations, the third right-angle reducer 235 rotates around the axis of the third positioning shaft 234, and the fourth positioning shaft 236 extends and retracts along its extension direction to ensure continuous power transmission to the active pressing roller 51.

[0108] Specifically, the pressing roller uses a double-conical roller (160-degree cone angle) on its side. The drive mechanism 20 drives the active pressing roller 51 through four reversals. The power output structure of the drive mechanism 20 inputs power into the gearbox 22, which distributes the power to the drive shaft 230 of the transmission structure group 23, completing the first power transmission. The drive shaft 230 transmits the power to the first right-angle reducer 231. After the first reversal, the power is transmitted to the second right-angle reducer 233 via the second positioning shaft 232, completing the second reversal and transmission. Then, the power is input to the third right-angle reducer 235 via the third positioning shaft 234, realizing the third reversal, and then transmitted to the second right-angle reducer 233 via the retractable fourth positioning shaft 236. The four right-angle reducer 237 completes the fourth reversal, and finally transmits power to the active pressing roller 51 to drive its operation. When the active pressing roller 51 encounters terrain undulations during equipment operation, the third right-angle reducer 235 will rotate around the axis of the third positioning shaft 234, while the fourth positioning shaft 236 extends and retracts along its own extension direction. Through the coordinated adjustment of "rotation + extension", the fourth positioning shaft 236 and the fourth right-angle reducer 237 are always kept in a stable transmission connection to avoid power transmission interruption, thereby enabling the active pressing roller 51 to adapt to the terrain and conform to the ground surface.

[0109] Continue to refer to Figure 1In an optional embodiment, the drip irrigation tape laying mechanism 70 includes a drip irrigation tape wheel 71 and a drip irrigation tape laying device 72. The drip irrigation tape wheel 71 is mounted on the frame 10, and its position in the working direction is used to balance the torque of the compound machine in the working direction. The drip irrigation tape wheel 71 is used to carry and release the drip irrigation tape. The drip irrigation tape laying device 72 is located on the side of the sowing mechanism 60 opposite to the working direction. The drip irrigation tape laying device 72 is used to receive the drip irrigation tape released by the drip irrigation tape wheel 71 and to lay the drip irrigation tape after the sowing mechanism 60 has completed its work.

[0110] Specifically, the frame 10 is equipped with an L-shaped fixing frame on which the seeding unit is fixed and the drip irrigation belt wheel 71 is fixed. The drip irrigation belt wheel 71 is installed between the fertilizer box and the seed box and is used to support the drip irrigation belt. The drip irrigation belt wheel is centrally located to balance the center of gravity of the whole machine and avoid tilting caused by the center of gravity shifting backward. The guide frame of the drip irrigation belt laying device 72 is "bow" shaped and spans the seed box, with one end connected to the drip irrigation belt wheel 71 and the other end guiding the trenching, covering and burying pipe device. During equipment operation, the drip irrigation belt pulley 71 releases the drip irrigation belt as the whole machine moves forward. The drip irrigation belt is guided to the trenching, covering, and pipe-burying device by the "bow"-shaped guide frame. The detachable wing-shaped trencher on the covering and pipe-burying device first digs a shallow trench on the surface after sowing. The drip irrigation belt then enters the trench. Subsequently, the elastic covering plate covers the soil on the drip irrigation belt to complete the burial. The layout of the central pulley and the rear-mounted pipe shifts the center of gravity of the whole machine forward, suppressing the tilting phenomenon during equipment operation or transportation.

[0111] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A rotary tillage, fertilization, and seeding combined operation machine for saline-alkali land, characterized in that, include: The machine includes a frame, drive mechanism, rotary tillage mechanism, fertilization mechanism, leveling mechanism, sowing mechanism, and drip irrigation tape laying mechanism. The frame is provided with the rotary tillage mechanism, the fertilization mechanism, the leveling mechanism, the sowing mechanism, and the drip irrigation tape laying mechanism in sequence along the working direction of the rotary tillage, fertilization, and sowing combined operation machine for saline-alkali land; The drive mechanism is connected to the rotary tillage mechanism, the fertilization mechanism, the leveling mechanism, the sowing mechanism, and the drip irrigation tape laying mechanism, and is used to provide power to each mechanism; The rotary tillage mechanism is used to crush the compacted soil of the saline-alkali land; The fertilization mechanism is used to store fertilizer and apply it into the soil; The leveling mechanism is used to level the surface of land after rotary tillage. The seeding mechanism is used to sow seeds into the leveled land; The drip irrigation tape laying mechanism is used to lay drip irrigation tape on the land after sowing.

2. The compound work machine according to claim 1, characterized in that, It also includes a depth adjustment mechanism, which comprises a suspension mechanism and depth positioning wheels; The depth positioning wheel is located on the side of the rotary tillage mechanism opposite to the working direction; The suspension mechanism includes a rotating arm and a first telescopic rod. One end of the rotating arm is connected to the positioning shaft of the depth positioning wheel, and the other end of the rotating arm is connected to the rotary tillage mechanism. The first telescopic rod is mounted on the frame and is used to adjust the height of the rotary tillage mechanism with the positioning shaft as the fulcrum. During the extension and retraction process, the first telescopic rod drives the rotating arm to rotate around the positioning shaft and drives the rotary tillage mechanism to rotate, thereby adjusting the rotary tillage depth of the rotary tillage mechanism.

3. The compound work machine according to claim 2, characterized in that, The rotary tillage mechanism includes at least one set of front cutter rollers and at least one set of rear cutter rollers; The front cutter roller and the positioning shaft rotate in opposite directions, while the rear cutter roller and the positioning shaft rotate in the same direction.

4. The compound work machine according to claim 3, characterized in that, The rotary tillage mechanism also includes a differential drive device; The differential drive device is connected to the drive mechanism for transmission, and the differential drive device is used to control the ratio of the rotational speed of the front cutter roller to the rotational speed of the rear cutter roller to be greater than 0 and less than 1.

5. The compound work machine according to claim 3, characterized in that, The front cutter roller is provided with multiple L-shaped cutters, and the rear cutter roller is provided with alternating straight cutters and oblique cutters. The L-shaped cutter is staggered with the straight cutter and the oblique cutter in the working direction, with an stagger spacing δ=1 / 2P; where P is the pitch of the front cutter roller or the rear cutter roller.

6. The compound work machine according to claim 3, characterized in that, The rotation diameter of the front cutter roller is smaller than that of the rear cutter roller.

7. The compound work machine according to claim 6, characterized in that, The rotation diameter D1 of the front cutter roller, the rotation diameter D2 of the rear cutter roller, and the interaxial distance A between the front cutter roller and the rear cutter roller satisfy: D1 < 2A < (D1 + D2).

8. The compound work machine according to claim 2, characterized in that, The fertilization mechanism includes a trenching shovel and at least three independent fertilizer bins; The trenching shovel is connected to the positioning shaft, and the included angle of the shovel tip is 25°-35°. The trenching shovel includes a guide vane, which is used to create V-shaped trenches in the soil after rotary tillage. On the side opposite to the working direction, the trenching shovel is equipped with at least three fertilizer pipes; Each of the independent fertilizer bins is equipped with a servo spiral fertilizer dispenser below it; Each of the servo spiral fertilizer applicators is connected to one of the fertilizer application pipes; Each of the independent fertilizer bins is used to store different fertilizers, and each of the independent fertilizer bins is connected to one of the fertilizer application pipes. During the extension and retraction of the first telescopic rod, the rotating arm and the trenching shovel are synchronously driven to rotate around the positioning axis; wherein, when the first telescopic rod extends, the height of the rotary tillage mechanism decreases and the angle between the trenching shovel and the ground increases, so that the depth of the V-shaped trench opened by the trenching shovel increases synchronously with the fertilization depth of the fertilization mechanism.

9. The compound work machine according to claim 8, characterized in that, The different fertilizer pipes have different heights.

10. The compound work machine according to claim 9, characterized in that, The independent fertilizer storage includes a microbial agent storage, a soil conditioner storage, and a fertilization fertilizer storage, with different volume ratios for the microbial agent storage, the soil conditioner storage, and the fertilization fertilizer storage. The microbial agent chamber is connected to a shallow fertilizer pipe, and the outlet depth of the shallow fertilizer pipe ranges from 0 to 15 cm. The soil conditioner compartment is connected to the fertilizer application pipe in the middle layer, and the outlet depth of the fertilizer application pipe in the middle layer ranges from 15 to 25 cm. The fertilizer bin is connected to a deep fertilizer pipe, the outlet depth of which is 25-35cm.

11. The compound work machine according to claim 1, characterized in that, The leveling mechanism includes an active compaction roller; The drive mechanism is used to drive the active pressing roller, and the active pressing roller and the positioning shaft rotate in the same direction.

12. The compound work machine according to claim 11, characterized in that, The ratio of the linear velocity of the active pressing roller to the forward speed of the compound machine is greater than 1.

13. The compound work machine according to claim 8, characterized in that, It also includes soil resistance sensors; The soil resistance sensor is used to detect the torque value of the rotary tillage mechanism in real time and calculate the real-time soil resistance based on the torque value. The depth adjustment mechanism is also used to adjust the rotary tillage depth of the rotary tillage mechanism and the soil penetration depth of the trenching shovel according to the real-time soil resistance.

14. The compound work machine according to claim 3, characterized in that, It also includes soil resistance sensors; The soil resistance sensor includes a first torque sensor, a second torque sensor, and a resistance calculation module; The first torque sensor is used to acquire the torque value of the front cutter roller; The second torque sensor is used to acquire the torque value of the rear cutter roller; The resistance calculation module is used to calculate the real-time soil resistance based on the torque values ​​of the front cutter roller and the rear cutter roller, which are transmitted in a time-division manner.

15. The compound work machine according to claim 14, characterized in that, The leveling mechanism includes an active compaction roller; The drive mechanism is also used to adjust the ground pressure of the active compaction roller according to the real-time soil resistance.

16. The compound work machine according to claim 15, characterized in that, The drive mechanism includes a power output structure, a gearbox, and a transmission structure assembly; The power output structure is used to provide power to the gearbox; The gearbox is used to receive power and distribute it to the transmission structure assembly; The transmission structure assembly includes a transmission shaft, a first right-angle reducer, a second positioning shaft, a second right-angle reducer, a third positioning shaft, a third right-angle reducer, a fourth positioning shaft, and a fourth right-angle reducer; The two ends of the drive shaft are respectively connected to the input end of the gearbox and the first right-angle reducer; The output end of the first right-angle reducer is connected to the second right-angle reducer via the second positioning shaft; The output end of the second right-angle reducer is connected to the third positioning shaft and the third right-angle reducer via a transmission connection. The output end of the third right-angle reducer is connected to the fourth positioning shaft and the fourth right-angle reducer via a transmission connection. The output end of the fourth right-angle reducer is connected to the active pressure roller drive; The fourth positioning axis is a telescopic structure that can extend and retract along the extension direction of the fourth positioning axis; When the active pressing roller encounters undulating terrain, the third right-angle reducer rotates around the axis of the third positioning shaft, and the fourth positioning shaft extends and retracts along the extension direction of the fourth positioning shaft to ensure continuous power transmission of the active pressing roller.

17. The compound work machine according to claim 1, characterized in that, The drip irrigation tape laying mechanism includes drip irrigation tape wheels and drip irrigation tape laying device; The drip irrigation belt wheel is mounted on the frame, and the position of the drip irrigation belt wheel in the working direction is used to balance the torque of the compound machine in the working direction. The drip irrigation belt wheel is used to carry and release the drip irrigation belt. The drip irrigation tape laying device is located on the side of the sowing mechanism away from the working direction. The drip irrigation tape laying device is used to receive the drip irrigation tape released by the drip irrigation tape wheel and to lay the drip irrigation tape after the sowing mechanism has completed its work.

Images