Multifunctional combined land preparation machine

Abstract

The invention relates to the technical field of land preparation machines, in particular to a multifunctional combined land preparation machine which comprises a rotary tillage part, a deep scarification part, a pressing part and an adjusting part. The rotary tillage part is mounted on the vehicle and is driven by a power output shaft of the vehicle to perform rotary tillage operation; the deep scarification part is hinged to the front end of the rotary tillage part in the working direction and used for soil deep scarification; the pressing part is hinged to the rear end of the rotary tillage part in the working direction and conducts soil pressing through the gravity of the pressing part. The adjusting parts are arranged between the rotary tillage part and the deep scarification part and between the rotary tillage part and the pressing part; the device has the beneficial effects that through adjustment control of the adjusting part, cooperative adjustment of the working depths of the three working parts is achieved. When the rotary tillage depth needs to be increased, the position of the rotary tillage part can be properly lowered through the adjusting part; similarly, the deep scarification depth can be changed by adjusting the relative height of the deep scarification part and the rotary tillage part, and the pressing strength can be controlled by adjusting the relative position of the pressing part and the rotary tillage part.

Description

Technical Field

[0001] The present invention relates to the technical field of land preparation machines, and particularly to a multi-functional combined land preparation machine. Background Art

[0002] In agricultural production, land preparation is a key link before crop planting, directly affecting soil structure, water retention and crop growth. Traditional land preparation operations usually require the cooperation of multiple agricultural implements, such as subsoilers, rotary tillers and rollers, etc., to respectively achieve functions such as soil deep loosening, soil fragmentation and compaction. However, multiple operations not only increase time and fuel costs, but also cause excessive compaction of the soil due to multiple vehicle rollings, reducing the operation efficiency.

[0003] To solve this problem, multi-functional combined land preparation machines have emerged in the prior art, integrating functions such as deep loosening, rotary tilling and rolling into one, achieving multiple processes in one go, improving operation efficiency and reducing soil disturbance. For example, some combined land preparation machines adopt a structure of front and rear arranged subsoiling shovels, rotary tiller blades and rollers, and sequentially complete soil deep loosening, fragmentation and compaction operations.

[0004] However, the existing multi-functional combined land preparation machines still have the following technical problems:

[0005] 1. Difficult depth adjustment: The operation depths of the deep loosening, rotary tilling and rolling components usually adopt fixed or mechanical adjustment methods, and it is difficult to quickly and accurately adjust according to different soil conditions or agronomic requirements. For example, the penetration depth of the subsoiling shovel directly affects soil air permeability, but existing equipment mostly relies on manual adjustment, with low efficiency and insufficient accuracy;

[0006] 2. Insufficient coordination: The depth adjustments of each functional component are often independent of each other, lacking a linkage control mechanism, resulting in uneven land preparation effects. For example, when the rotary tilling depth does not match the deep loosening depth, it may affect the soil fragmentation quality and even cause an uneven ground surface after rolling;

[0007] 3. Poor adaptability: Under different working conditions such as heavy clay soil or sandy soil, the adjustment range of existing equipment is limited, and it is difficult to meet diverse agricultural needs.

[0008] Therefore, a multi-functional combined land preparation machine is needed to overcome the above problems. Summary of the Invention

[0009] To solve the above problems, the embodiments of the present invention provide a multi-functional combined land preparation machine, achieving the purpose of solving the problems proposed in the background art.

[0010] In order to achieve the above object, the embodiments of the present invention specifically adopt the following technical solutions: A multi-functional combined land preparation machine includes a rotary tillage part, a subsoiling part, a rolling part and an adjusting part. The rotary tillage part is installed on a vehicle and drives for rotary tillage operation through the power output shaft of the vehicle; the subsoiling part is hinged at the front end in the working direction of the rotary tillage part for deep soil loosening; the rolling part is hinged at the rear end in the working direction of the rotary tillage part and relies on its own gravity for soil rolling; the adjusting part is arranged between the rotary tillage part and the subsoiling part, and between the rotary tillage part and the rolling part, and precisely controls the rotary tillage depth, subsoiling depth and rolling intensity by adjusting the relative height of each component.

[0011] Preferably, the adjusting part includes a support seat one fixedly connected to the rotary tillage part, a support seat two arranged on the subsoiling part and the rolling part, and a hydraulic push rod hinged between the support seat one and the support seat two. Through the telescopic movement of the hydraulic push rod, the relative height of each working component can be conveniently adjusted to achieve the purpose of adjusting the operation depth.

[0012] Furthermore, the subsoiling part adopts a unique buffer adjustment mechanism, including components such as a base, a support column, a T-shaped frame, a subsoiling shovel, a connecting block, a rotating seat, a connecting rod and a spring. Through this structure, buffer protection is provided for the subsoiling shovel when encountering hard soil to avoid equipment damage.

[0013] Preferably, a rotating block is rotatably connected inside the base, and two meshing rotating columns are rotatably arranged inside the base; one of the rotating columns is fixedly connected to the support column, and the other rotating column meshes with the rotating block; the rotating block is fixedly connected to the piston end of the hydraulic push rod, so that when the hydraulic push rod makes a telescopic movement, through the linkage of the rotating block and the rotating column, the support column always maintains the same inclined state, that is, the included angle between the support column and the soil remains unchanged, which is convenient for deep soil loosening treatment.

[0014] Furthermore, a plurality of toothed rings are fixedly connected to the outside of the rotating column, the two rotating columns are meshed and connected through the plurality of toothed rings, a gear tooth is fixedly connected to the rotating block, and the rotating block meshes with one of the rotating columns through the gear tooth and the toothed ring.

[0015] Preferably, the rotary tillage part includes: a body, hinged to the subsoiling part, a cutter shaft, rotatably arranged on the body, blades, fixedly connected to the cutter shaft, shearing the soil as the cutter shaft rotates, and a mounting frame, fixedly connected to the body for connecting to the vehicle.

[0016] Preferably, the rolling part includes: a frame body, hinged to the rotary tillage part, and a rolling roller, rotatably arranged on the frame body.

[0017] The beneficial effects of the embodiments of the present invention are:

[0018] Through the adjustment and control of the adjustment part, the coordinated adjustment of the working depths of the three working components is achieved. When it is necessary to increase the rotary tillage depth, the position of the rotary tillage part can be appropriately lowered through the adjustment part; similarly, by adjusting the relative height between the subsoiling part and the rotary tillage part, the subsoiling depth can be changed, and by adjusting the relative position between the pressing part and the rotary tillage part, the pressing intensity can be controlled. This integrated design not only improves the efficiency of land preparation operations but also enables flexible switching between multiple operation modes according to actual needs, meeting the requirements of different agricultural production scenarios;

[0019] When the subsoiling shovel encounters a large soil resistance, the acting force is transmitted to the connecting block through the T-shaped frame, compressing the spring to produce elastic deformation, causing the subsoiling shovel to automatically lift, achieving overload protection. By rotating the adjusting block to change its axial position on the connecting rod, the pre-compression amount of the spring can be precisely adjusted, thereby setting different subsoiling operation resistance thresholds;

[0020] When the hydraulic push rod expands and contracts, it drives the base to rotate along the hinge point, causing the rotating block to rotate, driving the rotating column connected thereto to rotate, and driving another rotating column to rotate synchronously in the opposite direction through meshing. Since the support column is fixedly connected to this rotating column, this linkage mechanism ensures that when adjusting the subsoiling depth, the support column will correspondingly produce a compensating rotation, precisely offsetting the angular change caused by the rotation of the base. This innovative design enables the inclination angle between the support column and the ground to always remain constant regardless of how the hydraulic push rod adjusts the working depth of the subsoiling part, and the entry angle of the subsoiling shovel will not change due to depth adjustment and always remains at the optimal working angle required by agronomy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the first perspective of the present invention;

[0022] Figure 2 is a schematic structural diagram of the second perspective of the present invention;

[0023] Figure 3 is Figure 2 an enlarged schematic structural diagram of part A in

[0024] Figure 4 is a schematic cross-sectional view of the first perspective at the subsoiling part of the present invention;

[0025] Figure 5 is a schematic cross-sectional view of the second perspective at the subsoiling part of the present invention;

[0026] Figure 6 is a schematic structural diagram at the rotating column of the present invention;

[0027] Figure 7 is a schematic structural diagram of an optional embodiment of the present invention.

[0028] In the figure: 1, rotary tillage part; 2, subsoiling part; 3, rolling part; 4, adjusting part; 5, rotating block; 6, rotating column; 7, gear ring; 8, gear teeth;

[0029] 11, machine body; 12, cutter shaft; 13, blade; 14, mounting bracket;

[0030] 21, base; 22, support column; 23, T-shaped frame; 24, subsoiling shovel; 25, connecting block; 26, rotating seat; 27, connecting rod; 28, spring; 29, adjusting block;

[0031] 31, frame body; 32, rolling roller;

[0032] 41, first support seat; 42, second support seat; 43, hydraulic push rod. Specific embodiments

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0034] See Figure 1 , an embodiment of the present invention discloses a multi-functional combined land preparation machine, including a rotary tillage part 1, a subsoiling part 2, a rolling part 3 and an adjusting part 4. The rotary tillage part 1 is installed on a vehicle and driven by the power output shaft of the vehicle to rotary till the soil; the subsoiling part 2 is hinged at the front end in the working direction of the rotary tillage part 1 and subsoils the soil as the vehicle moves; the rolling part 3 is hinged at the rear end in the working direction of the rotary tillage part 1 and compresses the soil by its own gravity; the adjusting part 4 is arranged between the rotary tillage part 1 and the subsoiling part 2 and between the rotary tillage part 1 and the rolling part 3;

[0035] Through the coordinated work of the components of the rotary tillage part 1, the subsoiling part 2, the rolling part 3 and the adjusting part 4, an integrated land preparation operation on the soil is realized. The land preparation machine is towed by a vehicle and uses the power output shaft of the vehicle to provide power, and can complete the three processes of subsoiling, rotary tillage and rolling of the soil at one time, significantly improving the land preparation efficiency and quality.

[0036] Through the provided adjusting part 4, which is respectively arranged between the rotary tillage part 1 and the subsoiling part 2 and between the rotary tillage part 1 and the rolling part 3, the relative positions and angles between the working components can be accurately controlled. Specifically, the adjusting part 4 can adjust the hinge angle between the rotary tillage part 1 and the subsoiling part 2, as well as the hinge angle between the rotary tillage part 1 and the rolling part 3, and then adjust the relative heights of the rotary tillage part 1, the subsoiling part 2 and the rolling part 3, so as to realize the independent adjustment of the rotary tillage depth, the subsoiling depth and the rolling intensity. This design enables the land preparation machine to ensure the best land preparation effect according to different soil conditions and agronomic requirements.

[0037] Through the adjustment control of the adjustment part 4, the coordinated adjustment of the operation depths of the three working parts is achieved. When it is necessary to increase the rotary tillage depth, the position of the rotary tillage part 1 can be appropriately lowered through the adjustment part 4; similarly, by adjusting the relative height between the subsoiling part 2 and the rotary tillage part 1, the subsoiling depth can be changed, and by adjusting the relative position between the pressing part 3 and the rotary tillage part 1, the pressing intensity can be controlled. This integrated design not only improves the efficiency of land preparation operations but also enables flexible switching between multiple operation modes according to actual needs, meeting the requirements of different agricultural production scenarios.

[0038] See Figure 1 、 4 、5, which shows an embodiment of the adjustment part 4. In this embodiment, the adjustment part 4 adopts a hydraulic drive method to achieve the angle adjustment between the working parts. Its specific structure includes three key components: a support base one 41, a support base two 42, and a hydraulic push rod 43. The support base one 41 serves as a fixed reference base and is firmly fixed on the rotary tillage part 1 by welding or bolt connection, providing a stable support foundation for the entire adjustment part 4. The support base two 42 is arranged symmetrically and is respectively installed at the corresponding positions of the subsoiling part 2 and the pressing part 3. Each support base two 42 is accurately aligned and installed to ensure a correct relative position relationship with the support base one 41. The hydraulic push rod 43, as a power execution element, forms a hinged connection at both ends with the support base one 41 and the support base two 42. This hinged method allows the hydraulic push rod 43 to swing freely within a certain angle range while ensuring the transmission of sufficient pushing and pulling forces.

[0039] The hydraulic push rod 43 adopts a double-acting hydraulic cylinder structure and realizes precise telescopic adjustment through the external hydraulic control system of the vehicle. When it is necessary to adjust the operation depth of the subsoiling part 2, the hydraulic system is operated to control the corresponding hydraulic push rod 43 to extend or shorten, pushing the subsoiling part 2 to rotate around its hinge point, thereby changing the penetration depth of the subsoiling shovel 24. Similarly, by controlling the telescopic amount of the hydraulic push rod 43 connecting the pressing part 3, the height of the pressing roller 32 can be adjusted, thereby adjusting the ground contact pressure and the pressing intensity. This hydraulic adjustment method has the advantages of fast response speed, high adjustment accuracy, and labor-saving operation. The operator can conveniently complete various adjustment operations through the hydraulic valve group in the cab, greatly improving the working efficiency and adaptability of the land preparation machine. The hydraulic system is also equipped with a self-locking device, which can automatically maintain the set position after the adjustment is in place, ensuring a stable relative position relationship between the working parts during the operation process.

[0040] See Figure 1-2, the rotary tillage part 1 of the present application includes a machine body 11. The front part of the machine body 11 is flexibly connected to the subsoiling part 2 through a hinge mechanism, and the rear part is hinged to the rolling part 3 to form a complete land preparation operation system. A cutter shaft 12 is rotatably supported inside the machine body 11, and multiple groups of blades 13 are installed on the cutter shaft 12. The mounting frame 14 is welded and fixed on the upper frame of the machine body 11 to realize the connection with the towing vehicle, ensuring the optimal transmission angle between the power output shaft and the transmission gearbox to drive the cutter shaft 12 to rotate.

[0041] When the whole machine is working, the power of the towing vehicle is transmitted to the cutter shaft 12 through the transmission gearbox to drive the blades 13 to rotate at a high speed. The blades 13 break the soil in a combined way of shearing and impact, and at the same time cut and mix the crop residues into the soil layer. The rotation speed of the cutter shaft 12 can be adjusted through the vehicle's PTO system according to soil conditions and operation requirements to meet the needs of different working conditions.

[0042] See Figure 1-2 , the rolling part 3 of the present application includes a frame body 31 and rolling rollers 32. When the whole machine is operating, the rolling rollers 32 rotate freely under the push of the soil reaction force, and compact the soft soil after rotary tillage through their own weight and vibration, eliminating excessive pores to form an ideal seedbed structure with a solid upper layer and a loose lower layer.

[0043] See Figure 3-5 , which shows an embodiment of the subsoiling part 2. The subsoiling part 2 of this embodiment adopts an elastic buffer structure design and has an overload protection function, effectively avoiding damage to the machine by hard obstacles. The subsoiling part 2 is mainly composed of components such as a base 21, a support column 22, a T-shaped frame 23, a subsoiling shovel 24, a connecting block 25, a rotating seat 26, a connecting rod 27, a spring 28, and an adjusting block 29. The base 21 is installed on the rotary tillage part 1 through a hinge to realize the flexible connection between the subsoiling part 2 and the rotary tillage part 1. A support column 22 is provided on the base 21, and the bottom end of the support column 22 is hinged to the middle part of the T-shaped frame 23, enabling the T-shaped frame 23 to swing freely in the vertical plane. A subsoiling shovel 24 is fixedly installed at one end of the T-shaped frame 23 through bolts, and a connecting block 25 is rotatably installed at the other end. A rotatable rotating seat 26 is provided inside the support column 22, and a connecting rod 27 is welded and fixed to the side of the rotating seat 26. The connecting rod 27 extends horizontally and passes through the central through hole of the connecting block 25. The outer surface of the connecting rod 27 is processed with threads, and an adjusting block 29 is installed through thread fitting. A high-strength spring 28 is sleeved between the adjusting block 29 and the connecting block 25.

[0044] When the deep plowing shovel 24 encounters greater soil resistance, the force is transmitted to the connecting block 25 through the T-shaped frame 23, and the compression spring 28 produces elastic deformation, so that the deep plowing shovel 24 is automatically lifted to achieve overload protection. By rotating the adjustment block 29 to change its axial position on the connecting rod 27, the pre-compression amount of the spring 28 can be accurately adjusted to set different deep plowing resistance thresholds. This elastic buffer mechanism can not only protect the machine from damage, but also ensure a stable deep plowing effect when encountering soils of different hardness, greatly improving the adaptability and reliability of the machine. When the whole machine is operating, the depth of the deep plowing shovel 24 into the soil is controlled by the hydraulic push rod 43, and the dynamic resistance during the operation is automatically balanced by the elastic buffer structure, forming a dual adjustment mechanism to ensure stable and reliable quality of deep plowing operations.

[0045] As a further illustration of the above embodiment:

[0046] Through the precise control of the hydraulic push rod 43, the free combination of the three operation modes of deep loosening, rotary tillage and suppression can be quickly realized. When rotary tillage-suppression combined operation is required, the hydraulic system drives the hydraulic push rod 43 connected to the deep loosening part 2 to contract, driving the base 21 to rotate upward around the hinge point, lifting the entire deep loosening part 2 to the set height, and withdrawing the deep loosening shovel 24 from the soil, completely out of the operating state. This hydraulic lifting system is easy to operate. The driver only needs to operate the hydraulic valve handle in the cab to complete the start and stop switching of the deep loosening operation while moving. The whole process only takes 10-15 seconds, and there is no need to stop the machine for operation, which greatly improves the operating efficiency. After the deep loosening part 2 is lifted into place, the hydraulic system self-locking device automatically works to firmly lock the deep loosening part 2 in the transportation position to prevent accidental falling during the operation.

[0047] This mode switching function enables the land preparation machine to flexibly select the full-process operation of "subsoiling-rotary tillage-compaction" or the simplified operation mode of "rotary tillage-compaction" according to different soil conditions and agronomic requirements. For example, when working on a plot that has been subsoiling or on sandy soil that does not require subsoiling, the subsoiling unit 2 can be retracted and only rotary tillage and compaction operations can be performed, which not only saves energy consumption, but also avoids unnecessary soil disturbance and meets diversified agricultural needs.

[0048] See also Figure 4-6, which shows another embodiment of the subsoiling part 2. In this embodiment, the subsoiling part 2 adopts a linkage type angle maintaining mechanism. Through the gear transmission system, it ensures that the subsoiling shovel 24 always maintains the best entry angle when adjusting the operation depth, significantly improving the quality of the subsoiling operation. The core of this mechanism lies in the linkage transmission system arranged inside the base 21, including a rotating block 5 and a pair of meshing rotating columns 6. Inside the support seat two 42 on the base 21, the rotating block 5 is rotatably installed through a bearing. This rotating block 5 is rigidly connected to the piston rod end of the hydraulic push rod 43 and can convert the linear motion of the hydraulic push rod 43 into rotational motion. Two meshing rotating columns 6 are installed in parallel inside the base 21. One of the rotating columns 6 is fixedly connected to the support column 22, and the other rotating column 6 realizes power transmission with the rotating block 5.

[0049] When the hydraulic push rod 43 expands and contracts, it drives the base 21 to rotate along the hinge point, causing the rotating block 5 to rotate, driving the rotating column 6 connected to it to rotate, and driving the other rotating column 6 to rotate synchronously and reversely through the meshing effect. Since the support column 22 is fixedly connected to this rotating column 6, this linkage mechanism ensures that when adjusting the subsoiling depth, the support column 22 will generate a compensating rotation accordingly, precisely offsetting the angle change caused by the rotation of the base 21. This innovative design enables the inclination angle between the support column 22 and the ground to always remain constant regardless of how the hydraulic push rod 43 adjusts the operation depth of the subsoiling part 2, and the entry angle of the subsoiling shovel 24 will not change due to the depth adjustment and always remains at the best working angle required by agronomy.

[0050] This mechanism adopts a fully enclosed design, and all transmission components are installed inside the base 21, effectively preventing soil intrusion and ensuring the long-term reliable operation of the system. It not only realizes the stepless adjustment of the subsoiling operation depth, but also ensures that the subsoiling shovel 24 can maintain the most reasonable entry angle at various operation depths, greatly improving the uniformity and stability of the subsoiling operation.

[0051] As a further explanation of the above embodiment:

[0052] The subsoiling part 2 adopts a multi-stage gear meshing transmission system, and realizes the automatic angle compensation function during the operation depth adjustment of the subsoiling shovel 24 through a precisely designed gear set, ensuring the stable and reliable quality of subsoiling operations. This transmission system is mainly composed of key components such as a rotating block 5, a rotating column 6, a tooth ring 7, and gear teeth 8, forming a complete motion transmission chain. The rotating column 6, as the core transmission component, has a plurality of high-precision tooth rings 7 fixedly distributed at equal intervals along its outer surface in the axial direction. These tooth rings 7 are made of high-strength alloy steel and have excellent wear resistance and transmission accuracy after carburizing and quenching treatment. Two parallelly arranged rotating columns 6 form a multi-stage gear transmission pair through the mutually meshing tooth rings 7. This design greatly increases the gear contact area, effectively disperses the transmission load, and improves the system's load-bearing capacity and operation stability. The rotating block 5, as the hydraulic drive input end, has precision gear teeth 8 machined on its circumferential surface. These gear teeth 8 are directly meshed with one of the tooth rings 7 on one of the rotating columns 6, efficiently converting the linear motion of the hydraulic push rod 43 into rotational motion.

[0053] When the hydraulic system drives the hydraulic push rod 43 to extend and retract, the rotating block 5 rotates. Through the meshing of the gear teeth 8 and the tooth ring 7, it drives the first rotating column 6 to rotate, and then drives the second rotating column 6 to rotate synchronously and reversely via multiple groups of mutually meshing tooth rings 7. Since the support column 22 is fixedly connected to the second rotating column 6, this multi-stage gear transmission system ensures that during the adjustment of the subsoiling depth, the support column 22 will generate an accurate angle compensation movement. It not only ensures that the subsoiling shovel 24 can maintain a constant and optimal entry angle at various operation depths, but also has significant advantages such as high transmission efficiency, good adjustment accuracy, and long service life, and is especially suitable for long-term and reliable operation under heavy-load and high-intensity subsoiling operation conditions. All transmission components of the system are installed inside the sealed base 21, effectively preventing soil and impurities from invading.

[0054] As an alternative embodiment of this application, such as Figure 7As shown, the base 21 of this embodiment is specially designed with a fully enclosed protection system. By setting flexible seal covers at key transmission parts, the problem that traditional tillage machinery is vulnerable to mud intrusion in harsh operating environments is effectively solved. Flexible protective covers are installed at the joints between the support columns 22 and the base 21, and between the hydraulic push rods 43 and the base 21. The cover body can adopt a corrugated tube structure design, with excellent telescopic deformation ability and weather resistance. The protective cover body is fixed to the connection end faces of the support column 22 and the base 21, and the connection end face of the base 21 and the piston rod end of the hydraulic push rod 43 respectively through high-strength clamps, forming a completely sealed protection space. When the hydraulic push rod 43 expands and contracts to drive the base 21 to rotate, the flexible cover body at the joint can freely expand and contract and deform with the mechanical movement, always maintaining a good sealing state, completely blocking the intrusion of external mud and impurities, and being applicable to high-dust tillage operating environments. The flexible cover body ensures reliable protection within the full stroke range of the swing of the support column 22 and the expansion and contraction of the hydraulic push rod 43.

[0055] It should be noted that in the description of the present invention, the terms indicating directions or position relationships such as "center, up, down, left, right, vertical, horizontal, inside, outside" are based on the directions or position relationships shown in the drawings. This is only for convenience of description, rather than indicating or implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first, second, third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed, connected, connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0057] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0058] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A multi-functional combined land preparation machine, characterized in that, Comprising: A rotary tillage part (1), mounted on a vehicle and driven by the power output shaft of the vehicle to rotary till the soil. A subsoiling part (2), hinged to the front end of the rotary tillage part (1) in the working direction, and subsoiling the soil as the vehicle moves. A compaction part (3), hinged to the rear end of the rotary tillage part (1) in the working direction, and compacting the soil by its own gravity, and An adjusting part (4), arranged between the rotary tillage part (1) and the subsoiling part (2) and between the rotary tillage part (1) and the compaction part (3) to adjust the hinge angle between the rotary tillage part (1) and the subsoiling part (2) and the hinge angle between the rotary tillage part (1) and the compaction part (3); The adjusting part (4) is designed to adjust the rotary tillage depth, subsoiling depth and compaction intensity of the soil by adjusting the relative height between the rotary tillage part (1), the subsoiling part (2) and the compaction part (3).

2. The multifunctional combined land preparation machine according to claim 1, characterized in that, The adjusting part (4) includes: A first support seat (41), fixedly connected to the rotary tillage part (1). Two second support seats (42), respectively arranged on the subsoiling part (2) and the compaction part (3), and a hydraulic push rod (43), hinged between the first support seat (41) and the second support seats (42).

3. The multifunctional combined land preparation machine according to claim 2, wherein The subsoiling part (2) includes: A base (21), hinged to the side of the rotary tillage part (1). A support column (22), arranged on the base (21). A T-shaped frame (23), hinged to the support column (22), with a subsoiling shovel (24) fixedly connected to one end and a connecting block (25) rotatably arranged at the other end. A rotating seat (26), rotatably arranged inside the support column (22), and a connecting rod (27) fixedly connected to the side and passing through the inside of the connecting block (25), and A spring (28), sleeved outside the connecting rod (27).

4. The multifunctional combined land preparation machine according to claim 3, characterized in that An adjusting block (29) is threadedly connected to the outside of the connecting rod (27), and the spring (28) is located between the adjusting block (29) and the connecting block (25).

5. The multifunctional combined land preparation machine according to claim 3, characterized in that, A rotating block (5) is rotatably connected inside the second support seat (42) on the base (21), and two meshing rotating columns (6) are rotatably arranged inside the base (21); One of the rotating columns (6) is fixedly connected to the support column (22), and the other rotating column (6) meshes with the rotating block (5).

6. The multifunctional combined land preparation machine according to claim 5, characterized in that, A plurality of tooth rings (7) are fixedly connected to the outside of the rotating column (6), and the two rotating columns (6) are meshingly connected through the plurality of tooth rings (7).

7. The multifunctional combined land preparation machine according to claim 5, characterized in that, A gear tooth (8) is fixedly connected to the rotating block (5), and the rotating block (5) meshes with one of the rotating columns (6) through the gear tooth (8) and the tooth ring (7).

8. The multifunctional combined land preparation machine according to claim 1, characterized in that, The rotary tillage part (1) includes: A body (11), hinged to the subsoiling part (2). A cutter shaft (12), rotatably arranged on the body (11). Blades (13), fixedly connected to the cutter shaft (12), and shearing the soil as the cutter shaft (12) rotates, and A mounting frame (14), fixedly connected to the body (11) for connecting to the vehicle.

9. The multifunctional combined land preparation machine according to claim 1, wherein The compaction part (3) includes: A frame body (31), hinged to the rotary tillage part (1), and The pressing roller (32) is rotatably arranged on the frame body (31).

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