A four-wheel drive tractor with rotary tillage function and its usage method

Abstract

The invention discloses a four-wheel drive mechanized tilling boat with a rotary tillage function and a use method thereof, and relates to the technical field of mechanized tilling boats. The invention comprises a four-wheel drive hull, a driving component arranged at the rear of the four-wheel drive hull, and a rotary tillage component arranged inside the driving component, wherein the driving component adjusts the position of the rotary tillage component and drives the rotary tillage component to rotate as a whole, and the rotary tillage component comprises a rotating shaft body, a rotary tillage body, a spring and a self-adjusting body, and the rotary tillage body, the spring and the self-adjusting body are all sleeved on the side of the rotating shaft body; when the rotary tillage body of the invention has a deep rotary tillage depth in paddy field soil, resulting in excessive force, a first friction component and a second friction component corresponding thereto move relative to each other, so that the rotary tillage body itself will not be subjected to greater force, and bending and deformation of the rotary tillage body due to excessive force in complex paddy fields can be avoided, and wear of the rotary tillage body can be reduced, thereby facilitating prolonging the service life of the rotary tillage body.

Description

Technical Field

[0001] The invention relates to the technical field of mechanized tilling boats, and in particular to a four-wheel drive mechanized tilling boat with a rotary tillage function and a use method thereof. Background Art

[0002] A tiller is a type of agricultural machinery designed specifically for paddy fields or swamps, used to perform farming operations in these complex terrains. The hull design allows the tiller to float on the water, reducing pressure on the paddy field soil and reducing damage to the paddy field soil structure. Most tillers use a four-wheel drive system that provides strong traction and ensures stable driving on muddy or slippery ground, enabling them to efficiently perform farming in shallow water or muddy land.

[0003] In the invention patent with the announcement number CN110393043B, a mechanized tiller with a rotary tillage function is disclosed. The patent points out that the existing mechanized tillers have few functions, most of which do not have a rotary tillage function. In addition, when tilling in water, the rotary tillage depth cannot be adjusted according to the water depth, so that the rotary tillage impeller cannot contact the soil at the bottom of the water or the tillage is too deep. The former affects the tillage effect, and the latter damages the rotary tillage impeller.

[0004] The tiller boat in the patent controls the descent depth of the rotary tiller module through the third motor when tilling the land underwater, so that the tilling depth of the two rotary tiller modules is optimized. During rotary tilling, the second motor drives the worm to rotate, and the worm drives the third gear to rotate, thereby driving the rotating shaft and the rotary tiller blades to rotate. The rotation of the rotary tiller blades breaks up the bottom soil to achieve the purpose of tilling.

[0005] Although the tillage machine can flexibly adjust the tillage depth and angle to improve the tillage efficiency and tillage effect. However, as far as paddy field soil is concerned, even at the same depth, the softness of the soil in the paddy field is also inconsistent, and there are obstacles such as stones and grass roots in the paddy field, which will cause obvious obstruction to the rotary tillage blades. The problem of the rotary tillage blades being blocked cannot be avoided by simply adjusting the rotary tillage depth and angle. When the rotary tillage blades are blocked, the rotary tillage blades may be damaged by friction at the least, and the rotary tillage blades may be bent and deformed due to excessive force at the worst, and the driving components may be damaged due to excessive load. For this reason, we propose a four-wheel drive tillage machine with rotary tillage function and a method for using it. Summary of the invention

[0006] The purpose of the present invention is to provide a four-wheel drive tiller boat with rotary tillage function and a use method thereof, which can effectively solve the problems raised in the background technology.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention is a four-wheel drive tiller boat with a rotary tillage function, comprising a four-wheel drive hull, a driving component arranged at the rear of the four-wheel drive hull, and a rotary tillage component arranged inside the driving component, wherein the driving component adjusts the position of the rotary tillage component and drives the rotary tillage component to rotate as a whole, wherein the rotary tillage component comprises a rotating shaft body, a rotary tillage body, a spring and a self-adjusting body, wherein the rotary tillage body, the spring and the self-adjusting body are all sleeved on the side of the rotating shaft body, wherein both sides of each rotary tillage body are provided with a spring and a self-adjusting body, and both ends of the spring are provided with a self-adjusting body;

[0009] The self-adjusting body includes a first friction component fixedly mounted on the side of the rotary tillage body, and a second friction component sleeved on the side of the shaft body. The first friction components are fixedly mounted on both sides of the rotary tillage body, and the second friction component slides on the side of the shaft body. The spring causes the second friction component at each end to contact the side of the corresponding first friction component.

[0010] Preferably, the shaft body comprises a shaft body and a plurality of positioning components fixedly arranged on the shaft body, a spring is sleeved on the outer side of each positioning component, and the positioning component comprises positioning blocks evenly spaced and arranged on the side of the shaft body, and each positioning block is fixed to the side of the shaft body by a first screw;

[0011] There is a gap between two adjacent positioning blocks in each positioning assembly for limiting the second friction assembly.

[0012] Preferably, the second friction assembly includes a movable plate sleeved on the side of the shaft body, a first friction plate fixedly arranged on one side of the movable plate, and a limit block fixedly arranged on the other side of the movable plate. The number of the limit blocks and the gaps are the same and correspond one to one, and the limit blocks move in the corresponding gaps.

[0013] Preferably, three first friction plates are arranged on each of the movable plates, and the three first friction plates form a complete circular ring structure. The movable plate is provided with three identical first slots, and a first friction plate is fixed inside each of the first slots via a second screw.

[0014] Preferably, the rotary tillage body includes a mounting ring movably mounted on the side of the shaft body and a tillage piece arranged on the mounting ring. Three mounting angles are integrally arranged on each mounting ring. A tillage piece is inserted inside each mounting angle. The tillage piece is fixed to the corresponding mounting angle on the mounting ring by a first bolt.

[0015] Preferably, the first friction assembly includes a positioning plate fixedly mounted on the side of the mounting ring, a second friction plate engaged with the side of the positioning plate, and a locking plate fixedly mounted on the side of the second friction plate, and the locking plate is fixedly mounted on the mounting angle side of the mounting ring by a first bolt.

[0016] Preferably, three identical second slots are formed on the positioning plate, three second friction plates are arranged on each positioning plate, the second friction plates correspond to the second slots one by one, and the second friction plates are engaged in the corresponding second slots.

[0017] Preferably, both ends of the shaft body are fixed with anti-retraction rings through a third screw, and the anti-retraction rings are used to position the springs at the ends of the shaft body.

[0018] Preferably, the driving component includes a hydraulic assembly, a transmission assembly, and a connecting shell, the shaft is movably mounted on the inner side of the connecting shell, the transmission assembly is used to drive the shaft to rotate, and the hydraulic assembly is used to adjust the height of the connecting shell.

[0019] The method for using a four-wheel drive tiller boat with a rotary tillage function comprises the following steps:

[0020] S1. When in use, the driving component is used to release the rotary tillage component downwards, the driving component drives the rotary tillage component to prepare for rotary tillage of the land, and the four-wheel drive hull moves forward;

[0021] S2. During the operation of the rotary tillage component, the spring contacts the self-adjusting body, so that the first friction component and the second friction component in the self-adjusting body are tightly combined together, so that the rotary tillage body rotates along with the rotation of the shaft body, and the rotary tillage body performs rotary tillage on the land;

[0022] S3. When some of the rotary tilling bodies are tilled at a deeper depth in the paddy field soil, resulting in excessive force, the corresponding first friction assembly and the second friction assembly move relative to each other. At this time, the rotary tilling body subjected to excessive force rotates relative to the shaft body, and the rotary tilling body will not continue to rotate deeper into the soil.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the present invention, during the operation of the rotary tillage component, the spring contacts the self-adjusting body, so that the first friction component and the second friction component in the self-adjusting body are closely combined, so that the rotary tillage body rotates with the rotation of the shaft body, and the rotary tillage body performs rotary tillage on the land. When some rotary tillage bodies are rotary tilled at a deeper depth in the paddy field soil, resulting in excessive force, the corresponding first friction component and the second friction component move relative to each other. At this time, the rotary tillage body subjected to excessive force rotates relative to the shaft body, so that the rotary tillage body itself does not bear greater force, which can avoid bending and deformation of the rotary tillage body due to excessive force in complex paddy fields, and can also reduce the wear of the rotary tillage body, thereby facilitating the service life of the rotary tillage body.

[0025] 2. The present invention is designed that the rotary tillage body rotates relative to the shaft body when the force is too great, so that the device can prevent the problem of overload operation of the driving components, avoid the problem of damage to the driving components due to excessive load, and facilitate to increase the service life of the driving components.

[0026] 3. The present invention enables the spring to press the second friction component against the first friction component. Even if wear occurs between the second friction component and the first friction component, the spring can always keep the second friction component and the first friction component in a state of close contact, thereby ensuring that during the rotation of the shaft body, the rotary tillage body can perform normal rotary tillage work through the contact between the second friction component and the first friction component.

[0027] 4. The present invention enables the spring to press the second friction component against the first friction component. When the rotary tillage body enters the paddy field soil, it is subjected to greater force, which will cause the rotary tillage body to deviate from the position on the shaft body, and the forces applied to the rotary tillage body at different depths in the paddy field soil are not the same, especially when the shaft body breaks out of the soil, the force applied to the shaft body is significantly reduced, which will cause the spring to return to its original position. The above situation can enable the spring to produce an obvious shock effect on the rotary tillage body when entering and emerging from the soil, making it convenient to loosen the paddy field soil and better break up and cultivate the paddy field soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a three-dimensional diagram of the bottom structure of a four-wheel drive tiller boat with rotary tillage function according to the present invention;

[0030] Figure 2 A four-wheel drive tillage boat with rotary tillage function according to the present invention Figure 1 Enlarged view of point A

[0031] Figure 3 It is a three-dimensional diagram of the top structure of a four-wheel drive tiller boat with rotary tillage function according to the present invention;

[0032] Figure 4 It is a three-dimensional diagram of a rotary tillage component of a four-wheel drive tillage boat with a rotary tillage function according to the present invention;

[0033] Figure 5 It is a three-dimensional diagram of a second friction assembly of a four-wheel drive tiller boat with rotary tillage function of the present invention;

[0034] Figure 6It is a three-dimensional diagram of the connection structure of the moving plate and the limiting block of a four-wheel drive tiller boat with rotary tillage function of the present invention;

[0035] Figure 7 It is a three-dimensional diagram of a first friction assembly of a four-wheel drive tiller boat with rotary tillage function of the present invention;

[0036] Figure 8 A three-dimensional diagram of a positioning plate of a four-wheel drive tiller boat with rotary tillage function according to the present invention;

[0037] Fig. 9 It is a three-dimensional diagram of the connection structure of the second friction plate and the clamping plate of a four-wheel drive tiller boat with rotary tillage function of the present invention;

[0038] Fig.10 It is a three-dimensional diagram of the main body of the rotating shaft of a four-wheel drive tiller boat with rotary tillage function according to the present invention;

[0039] Fig.11 It is a three-dimensional diagram of a rotary tillage main body of a four-wheel drive tillage boat with a rotary tillage function according to the present invention;

[0040] Fig.12 The present invention is a stereoscopic diagram of a mounting ring of a four-wheel drive tiller boat with rotary tillage function.

[0041] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0042] 1. Four-wheel drive hull; 2. Spring; 3. Rotating shaft body; 31. Shaft body; 32. Positioning block; 4. Rotary tillage body; 41. Mounting ring; 42. Cultivated land piece; 5. Driving component; 51. Hydraulic assembly; 52. Transmission assembly; 53. Connecting shell; 6. Self-adjusting body; 61. First friction assembly; 611. Positioning plate; 612. Second friction plate; 613. Positioning plate; 62. Second friction assembly; 621. Moving plate; 622. First friction plate; 623. Limiting block; 7. First screw; 8. Gap; 9. First slot; 10. Second screw; 11. Second slot; 12. Third screw; 13. Anti-retraction ring; 14. First bolt. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0044] See also Figure 1 - Fig.12As shown, a four-wheel drive tillage boat with a rotary tillage function comprises a four-wheel drive hull 1, a driving component 5 arranged at the rear of the four-wheel drive hull 1, and a rotary tillage component arranged inside the driving component 5, the driving component 5 adjusts the position of the rotary tillage component and drives the rotary tillage component to rotate as a whole, the rotary tillage component comprises a rotating shaft body 3, a rotary tillage body 4, a spring 2 and a self-adjusting body 6, the rotary tillage body 4, the spring 2 and the self-adjusting body 6 are all sleeved on the side of the rotating shaft body 3, the spring 2 and the self-adjusting body 6 are arranged on both sides of each rotary tillage body 4, and the self-adjusting body 6 is arranged at both ends of the spring 2;

[0045] The self-adjusting body 6 includes a first friction component 61 fixedly mounted on the side of the rotary tillage body 4, and a second friction component 62 sleeved on the side of the shaft body 3. The first friction component 61 is fixedly mounted on both sides of the rotary tillage body 4, and the second friction component 62 slides on the side of the shaft body 3. The spring 2 causes the second friction component 62 at each end to contact the side of the corresponding first friction component 61.

[0046] Based on the present device, during the operation of the rotary tillage component, the spring 2 contacts the self-adjusting body 6, so that the first friction component 61 and the second friction component 62 in the self-adjusting body 6 are tightly combined, so that the rotary tillage body 4 rotates with the rotation of the shaft body 3, and the rotary tillage body 4 performs rotary tillage on the land. When some rotary tillage bodies 4 are rotary tilled at a deeper depth in the paddy field soil, resulting in excessive force, the corresponding first friction component 61 and the second friction component 62 move relative to each other. At this time, the rotary tillage body 4 with excessive force rotates relative to the shaft body 3, so that the rotary tillage body 4 itself will not be subjected to greater force, which can avoid the bending and deformation of the rotary tillage body 4 due to excessive force in complex paddy fields, and can also reduce the wear of the rotary tillage body 4, thereby facilitating the improvement of the service life of the rotary tillage body 4. In addition, the design of the rotary tillage body 4 rotating relative to the shaft body 3 when the force is too large enables the present device to prevent the problem of overload operation of the driving component 5, avoid the problem of damage to the driving component 5 due to excessive load, and facilitate the improvement of the service life of the driving component 5.

[0047] Based on this device, by making the spring 2 press the second friction component 62 against the first friction component 61, even if wear occurs between the second friction component 62 and the first friction component 61, the spring 2 can always keep the second friction component 62 and the first friction component 61 in a state of tight contact, ensuring that during the rotation of the shaft body 3, the rotary tillage body 4 can perform normal rotary tillage work through the contact between the second friction component 62 and the first friction component 61.

[0048] Based on the present device, by making the spring 2 press the second friction component 62 against the first friction component 61, when the rotary tillage body 4 enters the paddy field soil, it is subjected to greater force, which will cause the rotary tillage body 4 to deviate from the position on the shaft body 3, and the forces exerted on the rotary tillage body 4 at different depths in the paddy field soil are not the same, especially when the shaft body 3 breaks out of the ground, the force exerted on the shaft body 3 is significantly reduced, which will cause the spring 2 to return to its original position. The above situation can enable the spring 2 to produce an obvious shock effect on the rotary tillage body 4 when entering and emerging from the ground, thereby facilitating the loosening of the paddy field soil and achieving a better loosening and tilling effect on the paddy field soil.

[0049] The shaft body 3 includes a shaft body 31 and a plurality of positioning components fixedly arranged on the shaft body 31, each positioning component is sleeved with a spring 2 on the outside, and the positioning components include positioning blocks 32 evenly spaced and arranged on the side of the shaft body 31, and each positioning block 32 is fixed to the side of the shaft body 31 by a first screw 7;

[0050] Based on this device, the setting of the positioning block 32 can prevent the rotary tillage body 4 from having a large position deviation on the shaft body 31, and avoid the rotary tillage body 4 from deviating far from the initial position, resulting in insufficient tillage of the paddy field soil. In addition, the setting of the positioning block 32 enables the rotary tillage body 4 to perform a small range of adaptive movement on the shaft body 31 during the rotary tillage process of the device. When small obstacles such as small stones appear in the paddy field soil that hinder the rotary tillage body 4, the rotary tillage body 4 can avoid these obstacles after performing a small range of adaptive movement. This achieves that after the rotary tillage body 4 is obstructed by a small obstacle, it does not rotate relative to the shaft body 31, so that the device has a better rotary tillage ability and avoids the obstruction of small obstacles that causes a decrease in the rotary tillage ability of the device.

[0051] There is a gap 8 between two adjacent positioning blocks 32 in each positioning assembly for limiting the second friction assembly 62 .

[0052] Based on this device, the second friction component 62 is limited by the structure of the gap 8, so that the second friction component 62 and the shaft body 31 rotate synchronously, thereby realizing the rotation of the rotary tillage body 4 by utilizing the friction between the second friction component 62 and the first friction component 61.

[0053] Among them, the second friction assembly 62 includes a movable plate 621 sleeved on the side of the shaft body 31, a first friction plate 622 fixedly arranged on one side of the movable plate 621, and a limit block 623 fixedly arranged on the other side of the movable plate 621. The number of limit blocks 623 and the gap 8 are the same and correspond one to one, and the limit blocks 623 move in the corresponding gap 8.

[0054] Based on this device, the limit block 623 is stuck in the gap 8. When the first friction plate 622, the movable plate 621 and the limit block 623 are connected, the second friction assembly 62 as a whole can only move relatively on the shaft 31, and cannot rotate relatively.

[0055] Among them, three first friction plates 622 are arranged on each movable plate 621, and the three first friction plates 622 form a complete circular ring structure. Three identical first slots 9 are opened on the movable plate 621, and a first friction plate 622 is fixed inside each first slot 9 by a second screw 10.

[0056] Based on the device, the first friction plate 622 can be replaced by disassembling the second screw 10 and the first friction plate 622, which is convenient for maintenance and repair of the device. The first slot 9 is provided so that the first friction plate 622 is more firmly installed on the moving plate 621.

[0057] Among them, the rotary tillage body 4 includes a mounting ring 41 movably mounted on the side of the shaft body 31, and a tillage piece 42 arranged on the mounting ring 41. Three mounting angles are integrally arranged on each mounting ring 41, and a tillage piece 42 is inserted inside each mounting angle. The tillage piece 42 is fixed to the corresponding mounting angle on the mounting ring 41 by a first bolt 14.

[0058] Based on the device, by removing the first bolt 14, when the tillage piece 42 is damaged, the tillage piece 42 can be replaced, which is convenient for maintenance and repair of the device.

[0059] Among them, the first friction assembly 61 includes a positioning plate 611 fixedly installed on the side of the mounting ring 41, a second friction plate 612 engaged with the side of the positioning plate 611, and a locking plate 613 fixedly installed on the side of the second friction plate 612. The locking plate 613 is fixedly installed on the mounting angle side of the mounting ring 41 by a first bolt 14.

[0060] Based on this device, the first bolt 14 fixes the clamping plate 613 and the tillage sheet 42 to the mounting ring 41, making the structure more compact and avoiding unnecessary parts. By removing the first bolt 14, it is convenient to replace the second friction plate 612 and to maintain and repair the device.

[0061] Among them, three identical second slots 11 are opened on the positioning plate 611, and three second friction plates 612 are set on each positioning plate 611. The second friction plates 612 correspond to the second slots 11 one by one, and the second friction plates 612 are engaged in the corresponding second slots 11.

[0062] Based on the present device, the provision of the second slot 11 enables the second friction plate 612 to be more firmly installed on the positioning plate 611 .

[0063] Among them, both ends of the shaft body 31 are fixedly provided with anti-retraction rings 13 through the third screw rod 12, and the anti-retraction rings 13 are used to position the spring 2 at the end of the shaft body 31.

[0064] The driving component 5 includes a hydraulic assembly 51 , a transmission assembly 52 , and a connecting shell 53 . The shaft 31 is movably mounted on the inner side of the connecting shell 53 . The transmission assembly 52 is used to drive the shaft 31 to rotate, and the hydraulic assembly 51 is used to adjust the height of the connecting shell 53 .

[0065] Based on this device, the hydraulic component 51 is used to raise and lower the rotary tillage component and adjust the height of the rotary tillage component. The transmission component 52 drives the shaft body 31 to rotate and drives the rotary tillage component to work.

[0066] The method for using a four-wheel drive tiller boat with a rotary tillage function comprises the following steps:

[0067] S1. When in use, the driving component 5 is used to release the rotary tillage component downwards, and the driving component 5 drives the rotary tillage component to prepare for rotary tillage of the land, and the four-wheel drive hull 1 moves forward;

[0068] S2. During the operation of the rotary tillage component, the spring 2 contacts the self-adjusting body 6, so that the first friction component 61 and the second friction component 62 in the self-adjusting body 6 are tightly combined together, so that the rotary tillage body 4 rotates along with the rotation of the shaft body 3, and the rotary tillage body 4 performs rotary tillage on the land;

[0069] S3. When part of the rotary tillage body 4 is tilled at a deeper depth in the paddy field soil, resulting in excessive force, the corresponding first friction component 61 and second friction component 62 move relative to each other. At this time, the rotary tillage body 4 subjected to excessive force rotates relative to the shaft body 3, and the rotary tillage body 4 will not continue to rotate into deeper soil.

[0070] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A four-wheel drive tiller boat with a rotary tillage function, comprising a four-wheel drive hull (1), a driving component (5) arranged at the rear of the four-wheel drive hull (1), and a rotary tillage component arranged inside the driving component (5), wherein the driving component (5) adjusts the position of the rotary tillage component and drives the rotary tillage component to rotate as a whole, characterized in that: The rotary tillage component comprises a rotating shaft body (3), a rotary tillage body (4), a spring (2) and a self-adjusting body (6); the rotary tillage body (4), the spring (2) and the self-adjusting body (6) are all sleeved on the side of the rotating shaft body (3); the spring (2) and the self-adjusting body (6) are arranged on both sides of each rotary tillage body (4); and the self-adjusting body (6) is arranged on both ends of the spring (2); The self-adjusting body (6) comprises a first friction component (61) fixedly mounted on a side of the rotary tillage body (4), and a second friction component (62) sleeved on a side of the shaft body (3); the first friction component (61) is fixedly mounted on both sides of the rotary tillage body (4); the second friction component (62) slides on the side of the shaft body (3); and the spring (2) causes the second friction component (62) at each end to contact the side of the corresponding first friction component (61); The rotating shaft body (3) comprises a shaft body (31) and a plurality of positioning components fixedly arranged on the shaft body (31), a spring (2) being sleeved on the outer side of each positioning component, the positioning component comprising positioning blocks (32) evenly spaced and arranged on the side of the shaft body (31), each positioning block (32) being fixed to the side of the shaft body (31) via a first screw rod (7); There is a gap (8) between two adjacent positioning blocks (32) in each positioning assembly for limiting the position of the second friction assembly (62); The second friction assembly (62) comprises a movable plate (621) sleeved on the side of the shaft body (31), a first friction plate (622) fixedly arranged on one side of the movable plate (621), and a limit block (623) fixedly arranged on the other side of the movable plate (621), wherein the limit blocks (623) and the gaps (8) are of the same number and correspond one to one, and the limit blocks (623) move in the corresponding gaps (8).

2. A four-wheel drive tiller boat with rotary tillage function according to claim 1, characterized in that: Three first friction plates (622) are arranged on each of the movable plates (621), and the three first friction plates (622) form a complete circular ring structure. Three identical first clamping grooves (9) are opened on the movable plate (621), and a first friction plate (622) is fixed inside each of the first clamping grooves (9) via a second screw (10).

3. A four-wheel drive tiller boat with rotary tillage function according to claim 2, characterized in that: The rotary tillage body (4) comprises a mounting ring (41) movably mounted on the side of the shaft body (31), and a tillage piece (42) arranged on the mounting ring (41); three mounting angles are integrally arranged on each mounting ring (41); a tillage piece (42) is inserted into the interior of each mounting angle; and the tillage piece (42) is fixed to the corresponding mounting angle on the mounting ring (41) by a first bolt (14).

4. A four-wheel drive tiller boat with rotary tillage function according to claim 3, characterized in that: The first friction assembly (61) comprises a positioning plate (611) fixedly mounted on the side of the mounting ring (41), a second friction plate (612) engaged with the side of the positioning plate (611), and a locking plate (613) fixedly mounted on the side of the second friction plate (612); the locking plate (613) is fixedly mounted on the side of the mounting angle on the mounting ring (41) by means of a first bolt (14).

5. The four-wheel drive tiller boat with rotary tillage function according to claim 4, characterized in that: The positioning plate (611) is provided with three identical second slots (11), and each positioning plate (611) is provided with three second friction plates (612). The second friction plates (612) correspond to the second slots (11) one by one, and the second friction plates (612) are engaged inside the corresponding second slots (11).

6. A four-wheel drive tiller boat with rotary tillage function according to claim 5, characterized in that: Anti-retraction rings (13) are fixedly provided at both ends of the shaft body (31) via third screw rods (12), and the anti-retraction rings (13) are used to position the springs (2) at the ends of the shaft body (31).

7. A four-wheel drive tiller boat with rotary tillage function according to claim 6, characterized in that: The driving component (5) comprises a hydraulic assembly (51), a transmission assembly (52), and a connecting shell (53); the shaft body (31) is movably mounted on the inner side of the connecting shell (53); the transmission assembly (52) is used to drive the shaft body (31) to rotate; and the hydraulic assembly (51) is used to adjust the height of the connecting shell (53).

8. The method for using the four-wheel drive tiller boat with rotary tillage function according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. When in use, the driving component (5) is used to release the rotary tillage component downwards, the driving component (5) drives the rotary tillage component to prepare for rotary tillage of the land, and the four-wheel drive hull (1) moves forward; S2. During the operation of the rotary tillage component, the spring (2) abuts against the self-adjusting body (6), so that the first friction component (61) and the second friction component (62) in the self-adjusting body (6) are tightly combined together, so that the rotary tillage body (4) rotates along with the rotation of the shaft body (3), and the rotary tillage body (4) performs rotary tillage on the land; S3. When some of the rotary tilling bodies (4) are tilled at a greater depth in the paddy field soil, resulting in excessive force, the first friction component (61) and the second friction component (62) corresponding thereto move relative to each other. At this time, the rotary tilling body (4) subjected to excessive force rotates relative to the rotating shaft body (3), and the rotary tilling body (4) will not continue to rotate deeper into the soil.

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