A rotary cultivator with tire mark elimination function

Abstract

This invention discloses a rotary tiller with tire mark removal function, including a rotary tiller assembly, a rotary tiller frame, a suspension bracket fixedly connected to the front of the rotary tiller frame, a rotary tiller blade shaft rotatably connected to the rotary tiller frame behind the suspension bracket, and a plurality of rotary tiller blades arranged on the rotary tiller blade shaft; a tire mark removal assembly is connected to the rotary tiller frame, including a power box, a power input shaft rotatably connected to the power box, side transmission boxes fixed to the upper side of the rotary tiller frame at both ends of the power box, a first vertical shaft rotatably connected to the side transmission boxes, the power input shaft and the first vertical shaft being drively connected, a first blade holder fixed to the lower end of the first vertical shaft, and a plurality of first tire mark removal blades arranged on the first blade holder; this invention can loosen the tire compaction layer before the rotary tiller blades break the soil, achieving synchronous deep soil crushing in the tire mark area and the uncompacted slab, eliminating soil hardness differences, and ensuring that the tillage layer is uniformly and finely crushed as a whole.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a rotary tiller with the function of eliminating tire indentations. Background Technology

[0002] Before sowing, the farmland needs to be rotary tilled to loosen the soil. Currently, rotary tillers are generally used for this purpose. Existing rotary tillers include a rotary tiller assembly and a frame. A suspension bracket is fixedly connected to the front of the frame, and a rotary tiller shaft is rotatably connected to the frame behind the suspension bracket. Several rotary tillers are arranged on the shaft. The frame is vertically connected to the rear of a tractor. When preparing for rotary tilling in the field, the tractor's lifting device lowers the rotary tiller. As the tractor moves forward, the rotary tiller shaft rotates continuously, and the blades till the soil, breaking up the soil layers. Simultaneously, the tractor tires leave noticeable indentations on the farmland. These indentations are vertically compacted, and the rotary tillers are ineffective at breaking up the compacted soil in these tire-indentation areas. These areas become a problem in the overall operation, affecting subsequent sowing quality and the uniformity of crop emergence. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems mentioned above and / or existing rotary tillage methods, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a rotary tiller with the function of eliminating tire marks. It can loosen the compacted layer of tires before the rotary tiller blades break the soil, so as to achieve synchronous deep soil crushing in the tire mark area and the uncompacted block, eliminate the difference in soil hardness, ensure that the tillage layer is uniformly crushed, and meet the requirements of precision agriculture for surface flatness.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rotary tiller with tire mark removal function, comprising a rotary tiller assembly, the rotary tiller assembly including a rotary tiller frame, a suspension bracket fixedly connected to the front of the rotary tiller frame, a rotary tiller blade shaft rotatably connected to the rotary tiller frame behind the suspension bracket, and a plurality of rotary tiller blades arranged on the rotary tiller shaft; a tire mark removal assembly is connected to the rotary tiller frame, the tire mark removal assembly including a power box, a power input shaft rotatably connected to the power box, and a fixed connection on the upper side of the rotary tiller frame at both ends of the power box. The machine is equipped with a side transmission box, on which a vertically arranged first shaft and a second shaft are rotatably connected. The first shaft is located between the second shaft and the power box, and the first shaft and the second shaft rotate in opposite directions. The power input shaft is connected to the first shaft and the second shaft. A first blade holder is fixedly connected to the end of the first shaft that extends downward outside the rotary tiller frame. Several first tire indentation removal blades are arranged on the first blade holder. A second blade holder is fixedly connected to the end of the second shaft that extends downward outside the rotary tiller frame. Several second tire indentation removal blades are arranged on the second blade holder.

[0007] As a further preferred embodiment of the present invention, the power input shaft is connected to the first vertical shaft via a transmission assembly.

[0008] As a further preferred embodiment of the present invention, the transmission assembly includes a drive sprocket connected to a power input shaft inside a power box, a drive shaft rotatably connected inside a side transmission box, a driven sprocket and a first drive bevel gear connected to the drive shaft, the drive sprocket being connected to the corresponding driven sprocket via a drive chain, a first driven bevel gear and a first drive gear being connected to one end of a first vertical shaft extending upward into the side transmission box, and a first driven gear meshing with the first drive gear being connected to one end of a second vertical shaft extending upward into the side transmission box.

[0009] As a further preferred embodiment of the present invention, the position of the side transmission box in the left-right direction is adjustable.

[0010] As a further preferred embodiment of the present invention, it further includes two sets of position adjustment components that correspond one-to-one with the transmission components. Each position adjustment component includes a position adjustment driver. The two position adjustment drivers are respectively fixedly connected to the left and right sides of the upper end of the rotary tiller frame. A position adjustment rod that makes reciprocating linear motion in the left and right direction is connected to the position adjustment driver. The end of the position adjustment rod away from the position adjustment driver is fixedly connected to the corresponding side transmission box. The side transmission box is slidably connected to the upper side of the rotary tiller frame.

[0011] As a further preferred embodiment of the present invention, wherein: the position adjustment assembly further includes a transmission rod, a slider slidably connected to the upward side of the rotary tiller frame, and a column located near the power box and fixedly connected to the upper side of the rotary tiller frame; a lower connecting shaft horizontally arranged in the front-rear direction is connected to the slider; one end of the transmission rod is fixedly connected to the end of the side transmission box opposite to the power box; the other end of the transmission rod extends towards the power box and is connected to the lower connecting shaft; a connecting rod is rotatably connected to the lower connecting shaft; a lifting block is slidably connected to the column; a first upper connecting shaft is connected to one end of the lifting block in the front-rear direction; an upper tension sprocket is rotatably connected to the first upper connecting shaft; a downward-facing end of the transmission chain engages with the upper tension sprocket; and the end of the connecting rod away from the lower connecting shaft is rotatably connected to the lifting block.

[0012] As a further preferred embodiment of the present invention, wherein: the other end of the lifting block in the front-rear direction is connected to a second upper connecting shaft, and the end of the connecting rod away from the lower connecting shaft is rotatably connected to the second upper connecting shaft.

[0013] As a further preferred embodiment of the present invention, wherein: the upper end of the rotary tiller frame between the column and the corresponding side transmission box is fixedly connected to a mounting housing with an upward opening, a lifting plate that can be raised and lowered is slidably connected inside the mounting housing, a compression spring is connected between the lower side of the lifting plate and the upper end of the bottom of the mounting housing, a lower tension sprocket is rotatably connected above the lifting plate, the upper end of the lower tension sprocket cooperates with the lower end of the corresponding lower transmission chain, and the compression spring is always in a compressed state.

[0014] As a further preferred embodiment of the present invention, wherein: an upper intermediate transmission box is fixedly connected to the upper end of the rotary tiller frame behind the power box; a rotary tiller power shaft is connected to the upper intermediate transmission box and the power box; a second transmission gear is also connected to the power input shaft; an intermediate transmission gear is connected to the rotary tiller power shaft inside the power box; a second transmission bevel gear is connected to the rotary tiller power shaft extending into the upper intermediate transmission box; an intermediate shaft is rotatably connected inside the upper intermediate transmission box; a third transmission gear and a second driven bevel gear cooperating with the second transmission bevel gear are connected to the intermediate shaft; a lower intermediate transmission box is fixedly connected to the lower end of the rotary tiller frame; a second driven gear cooperating with the third transmission gear is rotatably connected inside the lower intermediate transmission box; and the second driven gear is connected to the rotary tiller blade shaft.

[0015] As a further preferred embodiment of the present invention, wherein: the lifting block is connected to a linear guide clamp for releasing the lifting block or clamping the lifting block on the column.

[0016] Compared with the prior art, this invention has the following technical advantages: It loosens the vertically compacted soil by using two opposing and continuously rotating vertical tire indentation removal blades, eliminating tire indentations and ensuring a uniform and finely broken topsoil layer, thus improving the quality of subsequent planting operations. Before operation, the position of the tire indentation removal components is adjusted according to the wheel track of the matching walking device. The transmission chain, as a key component in the transmission connection between the power input shaft and the vertical tire indentation removal blades, ensures that the first tension sprocket moves with the transmission box during adjustment, while the second tension sprocket moves upward under the action of the compression spring. This keeps the transmission chain taut throughout the movement of the transmission box, ensuring the reliability of the operation after the tire indentation removal components are adjusted. In this application, the power input shaft serves as the power source for the rotary tillage blades and each vertical tire indentation removal blade, eliminating the need for other external power sources. It can be applied to rotary tillage operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is the front view of the present invention.

[0019] Figure 2 The three-dimensional structure of the present invention Figure 1 .

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0021] Figure 4 The three-dimensional structure of the present invention Figure 2 .

[0022] Figure 5 for Figure 4 A magnified view of a section at point B.

[0023] Figure 6 The three-dimensional structure of the present invention Figure 3 .

[0024] Figure 7 for Figure 6 A magnified view of a section at point C.

[0025] Figure 8 The three-dimensional structure of the present invention Figure 4 .

[0026] Figure 9for Figure 8 A magnified view of a section at point D.

[0027] Figure 10 This is a comparative schematic diagram showing the side transmission box before and after its position is moved in this invention.

[0028] In the diagram, 1 is the rotary tiller assembly, 101 is the rotary tiller blade shaft, 102 is the rotary tiller frame, 102-1 is the sliding groove, 103 is the rotary tiller blade, 104 is the suspension bracket; 2 is the tire mark removal assembly, 201 is the first blade holder, 202 is the first tire mark removal blade, 203 is the second tire mark removal blade, 204 is the second blade holder; 205 is the power input shaft, 206 is the upper intermediate transmission box, 207 is the side transmission box, 208 is the slide rail; 3 is the transmission assembly, 301 is the first driven gear, 302 is the first transmission gear, 303 is the transmission shaft, 304 is the transmission chain, 305 is the drive sprocket, 306 is the first transmission bevel gear, 307 is the first driven bevel gear, 308 is the driven sprocket; 4 is the position adjustment assembly, 401 is the position adjustment driver; 4 is the position adjustment drive. 02 Position Adjustment Rod, 403 Lifting Block, 404 Second Linear Guide Rail Clamp, 405 Column, 406 Horizontal Guide Rail, 407 Connecting Rod, 408 Slider, 409 Lower Connecting Shaft, 410 Transmission Rod, 411 Lifting Plate, 412 Compression Spring, 414 Mounting Housing, 415 Lower Tensioning Sprocket, 416 First Upper Connecting Shaft, 417 Upper Tensioning Sprocket, 418 Second Upper Connecting Shaft, 5 Power Output Assembly, 501 Second Driven Bevel Gear, 502 Third Transmission Gear, 503 Intermediate Gear, 504 Second Driven Gear, 505 Second Transmission Gear, 506 Intermediate Transmission Gear, 507 Rotary Tiller Power Shaft, 508 Second Transmission Bevel Gear, 509 Intermediate Shaft, 510 Lower Intermediate Transmission Box. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1: Refer to Figures 1-3 , Figure 6and Figure 7 This embodiment provides a rotary tiller with the function of eliminating tire marks, which can eliminate tire marks to eliminate soil hardness differences and ensure that the tillage layer is uniform and finely broken as a whole.

[0033] A rotary tiller with tire mark removal function includes a rotary tillage assembly 1, which includes a rotary tillage frame 102. A suspension bracket 104 is fixedly connected to the front of the rotary tillage frame 102. A rotary tillage blade shaft 101 is rotatably connected to the rotary tillage frame 102 behind the suspension bracket 104. A plurality of rotary tillage blades 103 are arranged on the rotary tillage shaft 101. A tire mark removal assembly 2 is connected to the rotary tillage frame 102 in front of the rotary tillage shaft 101. The tire mark removal assembly 2 includes a power box, a power input shaft 205 is rotatably connected to the power box, and side transmission boxes 207 are fixedly connected to the upper sides of the rotary tillage frame 102 at both ends of the power box. A vertically arranged first shaft and a second shaft are rotatably connected to the side transmission boxes 207. The first vertical shaft is located between the second vertical shaft and the power box. The rotation directions of the first and second vertical shafts are opposite. The power input shaft 205 is connected to the first and second vertical shafts. The end of the first vertical shaft extending downwards out of the rotary tiller frame 102 is fixedly connected to the first blade holder 201. Several first tire mark removal blades 202 are arranged on the first blade holder 201. The end of the second vertical shaft extending downwards out of the rotary tiller frame 102 is fixedly connected to the second blade holder 204. Several second tire mark removal blades 203 are arranged on the second blade holder 204. The first tire mark removal blades 202 and the second tire mark removal blades 203 have the same structure. The bottom of the first tire mark removal blades 202 is not higher than the lowest position of the outer rotating edge of the rotary tiller blade 103.

[0034] The forward walking device is connected to the suspension bracket 104 via a lifting device. During operation, the walking device lowers the suspension bracket 104 via the lifting device, so that the rotary tiller 103 and the tire mark removal blade are lowered to the required height. The first tire mark removal blade 202 and the second tire mark removal blade 203 rotate continuously in opposite directions, continuously milling and removing tire marks. The rotary tiller 103 further tills the soil after removing the tire marks. The soil hardness of the tilled farmland is basically the same, which is beneficial to subsequent planting operations.

[0035] Specifically, the power input shaft 205 is connected to two first vertical shafts via two sets of transmission components 3, which are spaced apart in the front-rear direction. Each transmission component 3 includes a drive sprocket 305 connected to the power input shaft 205 inside the power box. A transmission shaft 303 is rotatably connected inside the side transmission box 207. A driven sprocket 308 and a first transmission bevel gear 306 are connected to the transmission shaft 303. The drive sprocket 305 is connected to the corresponding driven sprocket 308 via a transmission chain 304. One end of the first vertical shaft extending upward into the side transmission box 207 is connected to the first driven bevel gear 307 and the first transmission gear 302. One end of the second vertical shaft extending upward into the side transmission box 207 is fixedly connected to a first driven gear 301 meshing with the first transmission gear 302 (the transmission ratio of the first driven gear 301 and the first transmission gear 302 is 1:1). The structure that realizes the transmission connection between the power input shaft 205 and the rotary tiller shaft 101 is the power output component 5, which includes components fixedly connected to... The upper intermediate transmission box 206 is located at the top of the rotary tiller frame 102, behind the power box. A rotary tillage power shaft 507 is connected to the upper intermediate transmission box 206 and the power box. A second transmission gear 505 is also connected to the power input shaft 205. An intermediate transmission gear 506 is connected to the rotary tillage power shaft 507 inside the power box. A second transmission bevel gear 508 is connected to the rotary tillage power shaft 507 extending into the upper intermediate transmission box 206. A rotatable [device / equipment] is also rotatably connected inside the upper intermediate transmission box 206. An intermediate shaft 509 is connected to a third transmission gear 502 and a second driven bevel gear 501 that engages with a second transmission bevel gear 508. A lower intermediate transmission box 510 with an upward mounting opening is fixedly connected to the downward end of the rotary tiller frame 102. An intermediate gear 503 that engages with the third transmission gear 502 is rotatably connected inside the lower intermediate transmission box 510. A second driven gear 504 is connected to the rotary tiller blade shaft 101. The lower ends of the second driven gear 504 and the intermediate gear 503 engage with each other.

[0036] The power output from the tractor is transmitted to the power input shaft 205 via a universal joint. The power input shaft 205 drives two drive sprockets 305 and a second transmission gear 505 to rotate. The drive sprockets 305 drive the driven sprockets 308 via the corresponding transmission chain 304. The driven sprockets 308 drive the transmission shaft 303 to rotate. The transmission shaft 303 drives the first transmission bevel gear 306 to rotate. The first transmission bevel gear 306 drives the first vertical shaft to rotate via the first driven bevel gear 307. The first vertical shaft drives the first transmission gear 302 to rotate. The first vertical shaft simultaneously drives several first tire indentation removal knives 202 to rotate via the first knife holder 201. The first transmission gear 302 drives the second vertical shaft to rotate via the driven gear. The second vertical shaft drives several second tire indentation removal knives 203 to rotate via the second knife holder 204. The first tire mark removal blade 202 and the second tire mark removal blade 203 rotate in opposite directions, continuously milling the compacted soil and loosening the soil at the tire mark location. Simultaneously, the second transmission gear 505 drives the rotary tillage power shaft 507 to rotate via the intermediate transmission gear 506. The rotary tillage power shaft 507 drives the second transmission bevel gear 508 to rotate. The second transmission bevel gear 508 drives the second driven bevel gear 501 to rotate. The second driven bevel gear 501 drives the intermediate shaft 509 to rotate. The intermediate shaft 509 drives the third transmission gear 502 to rotate. The third transmission gear 502 drives the rotary tillage blade shaft 101 to rotate via the second driven gear 504. The rotary tillage blade shaft 101 drives the rotary tillage blade 103 to rotate, performing rotary tillage operations. Through the combined arrangement of the above structures, the tire mark removal and rotary tillage operations are synchronized.

[0037] Example 2: Reference Figure 4 , Figure 5 and Figures 8-10 This embodiment provides a rotary tiller with tire indentation removal function, which can further realize the overall position adjustment of the tire indentation removal blade and improve its applicability.

[0038] Specifically, the position of the side transmission box 207 in the left and right directions is adjustable. The structure for achieving position adjustment includes two sets of position adjustment components 4 corresponding to the transmission components 3. The position adjustment components 4 include position adjustment drivers 401. The two position adjustment drivers 401 are fixedly connected to the left and right sides of the upper end of the rotary tiller frame 102, respectively. The position adjustment drivers 401 are connected to position adjustment rods 402 that make reciprocating linear motion in the left and right directions. The end of the position adjustment rod 402 away from the position adjustment driver 401 is fixedly connected to the corresponding side transmission box 207. The side transmission box 207 is slidably connected to the upper side of the rotary tiller frame 102. Specifically, the left and right parts of the rotary tiller frame 102 have sliding openings, and the rotary tiller frame 102 on the front and rear sides of the sliding openings is fixedly connected to slide rails 208. The front and rear ends of the side transmission box 207 have sliding grooves, and the side transmission box 207 is slidably connected to the slide rails 208 through the sliding grooves.

[0039] Before operation, adjust the positions of the two side transmission boxes 207 according to the wheel track of the tractor. The position adjustment driver 401 is activated, and the position adjustment rod 402 drives the side transmission box 207 to move. When the side transmission box 207 moves to the appropriate position, that is, when the first tire indentation removal knife 202 and the second tire indentation removal knife 203 cover the tire directly in front, the position adjustment driver 401 stops operating.

[0040] Specifically, the position adjustment assembly 4 also includes a transmission rod 410, a slider 408 slidably connected to the upward side of the rotary tiller frame 102, and a column 405 located near the power box and fixedly connected to the upper side of the rotary tiller frame 102. A horizontal guide rail 406 is fixedly connected to the rotary tiller frame 102 between the column 405 and the sliding groove 102-1. The slider 408 is slidably connected to the horizontal guide rail 406. A lower connecting shaft 409, horizontally arranged in the front-rear direction, is connected to the slider 408. One end of the transmission rod 410 is fixedly connected to the end of the side transmission box 207 opposite to the power box. The other end of the transmission rod 410 extends towards the power box and is connected to the lower connecting shaft 409. A connecting rod 407 is rotatably connected to the lower connecting shaft 409. A lifting block 403 is slidably connected to the column 405. One end of the lifting block 403 in the front-rear direction is connected to a first upper connecting shaft 416. An upper tension sprocket 417 is rotatably connected to the shaft 416. The lower end of the transmission chain 304 engages with the upper tension sprocket 417. The other end of the lifting block 403 in the front-rear direction is connected to a second upper connecting shaft 418. The end of the connecting rod 407 away from the lower connecting shaft 409 is rotatably connected to the second upper connecting shaft 418. The upper end of the rotary tiller frame 102 between the column 405 and the corresponding side transmission box 207 is fixedly connected to a mounting housing 414 with an upward opening. A lifting plate 411 that can be raised and lowered is slidably connected inside the mounting housing 414. A compression spring 412 is connected between the lower side of the lifting plate 411 and the upper end of the bottom of the mounting housing 414. A support bracket is fixedly connected to the upper side of the lifting plate 411. The upper end of the support bracket is rotatably connected to a lower tension sprocket 415. The upper end of the lower tension sprocket 415 engages with the lower end of the corresponding lower transmission chain 304. The compression spring 412 is always in a compressed state.

[0041] The compression spring 412 is always in a compressed state. Taking the decrease in wheel track as an example, the two side transmission boxes 207 need to move towards each other. When the position adjustment rod 402 pushes the side transmission box 207 to move in the direction of the power box, the transmission chain 304 moves to the right, and the side transmission box 207 pushes the transmission rod 410 to move. The transmission rod 410 drives the sliding block to move via the lower connecting shaft 409. The sliding block slides along the horizontal guide rail 406. At the same time, the lower connecting shaft 409 drives the lifting block 403 to move upward via the connecting rod 407. The lifting block 403 drives the upper tension sprocket 417 to move upward via the first upper connecting shaft 416. At the same time, the lower tension sprocket 415 moves upward synchronously under the action of the compression spring 412 to dynamically tension the transmission chain 304, avoid the slack of the transmission chain 304 during the movement of the side transmission box 207, and achieve position adjustment while ensuring the reliability of the transmission connection between the power input shaft 205 and the first vertical shaft. For ease of understanding, this application provides a schematic diagram of the side transmission box 207 after the position change. Figure 10 The tire indentation elimination component 2 and the position adjustment component 4 are in their original positions as indicated by black lines, and in their adjusted positions as indicated by red lines. The changes in the stroke of the upper tension sprocket 417 and the lower tension sprocket 415 can be seen.

[0042] Specifically, the lifting block 403 is connected to a first linear guide clamp for releasing the lifting block 403 or clamping the lifting block 403 onto the column 405. The slider 408 is also connected to a second linear guide clamp 404 for releasing the slider 408 or clamping the slider 408 onto the horizontal guide rail 406. Both the first and second linear guide clamps 404 are existing technologies. Before adjusting the position, the first and second linear guide clamps are released, allowing the lifting block 403 to slide up and down along the column 405 and the slider 408 to slide left and right along the horizontal guide rail 406. After the position adjustment is completed, the first and second linear guide clamps are tightened, so that the first linear guide clamp clamps the lifting block 403 onto the column 405 and the second linear clamp clamps the slider 408 onto the horizontal guide rail 406, thereby fixing the side transmission box 207 after position adjustment and preventing the transmission chain 304 from loosening.

[0043] In this application, the front-back direction is referenced to the front view. The direction perpendicular to the paper and forward is front, and the opposite direction is back. The left-right direction is the horizontal direction perpendicular to the front-back direction.

Claims

1. A rotary tiller with tire mark removal function, comprising a rotary tillage assembly and a position adjustment assembly, the rotary tillage assembly including a rotary tillage frame, a suspension bracket fixedly connected to the front of the rotary tillage frame, and a rotary tillage blade shaft rotatably connected to the rotary tillage frame behind the suspension bracket, wherein a plurality of rotary tillage blades are arranged on the rotary tillage blade shaft; characterized in that: The rotary tiller frame is connected to a tire indentation removal assembly, which includes a power box. A power input shaft is rotatably connected to the power box. Side transmission boxes are fixedly connected to the upper sides of the rotary tiller frame at both ends of the power box. A vertically arranged first and second vertical shaft are rotatably connected to the side transmission boxes. The first and second vertical shafts rotate in opposite directions, with the power input shaft drivingly connected to both shafts. A first blade holder is fixedly connected to the end of the first vertical shaft extending downwards beyond the rotary tiller frame, and several first tire indentation removal blades are arranged on the first blade holder. A second blade holder is fixedly connected to the end of the second vertical shaft extending downwards beyond the rotary tiller frame, and several second tire indentation removal blades are arranged on the second blade holder. A position adjustment assembly includes position adjustment drivers. Two position adjustment drivers are fixedly connected to the left and right sides of the upper end of the rotary tiller frame, respectively. Each position adjustment driver is connected to a reciprocating linear motion device in the left-right direction. The position adjustment rod is fixedly connected to a corresponding side transmission box at one end away from the position adjustment driver. The side transmission box is slidably connected to the upper side of the rotary tiller frame. The position adjustment assembly also includes a transmission rod, a slider slidably connected to the upper side of the rotary tiller frame, and a column located near the power box and fixedly connected to the upper side of the rotary tiller frame. A lower connecting shaft arranged horizontally in the front-rear direction is connected to the slider. One end of the transmission rod is fixedly connected to the end of the side transmission box opposite to the power box, and the other end of the transmission rod extends in the direction of the power box and is connected to the lower connecting shaft. A connecting rod is rotatably connected to the lower connecting shaft. A lifting block is slidably connected to the column. One end of the lifting block in the front-rear direction is connected to a first upper connecting shaft. An upper tension sprocket is rotatably connected to the first upper connecting shaft. A downward-facing end of the transmission chain engages with the upper tension sprocket. The end of the connecting rod away from the lower connecting shaft is rotatably connected to the lifting block.

2. The rotary cultivator with the function of eliminating tire marks according to claim 1, characterized in that: The power input shaft is connected to the first vertical shaft via a transmission assembly.

3. The rotary cultivator with the function of eliminating tire marks according to claim 2, characterized in that: The transmission assembly includes a drive sprocket connected to the power input shaft inside the power box, a drive shaft rotatably connected inside the side transmission box, a driven sprocket and a first drive bevel gear connected to the drive shaft, the drive sprocket being connected to the corresponding driven sprocket via a drive chain, one end of the first vertical shaft extending upward into the side transmission box being connected to the first driven bevel gear and the first drive gear, and one end of the second vertical shaft extending upward into the side transmission box being connected to the first driven gear meshing with the first drive gear.

4. The rotary tiller with tire indentation removal function as described in claim 3, characterized in that: The position adjustment components are provided in two sets, each corresponding to a transmission component.

5. The rotary tiller with tire indentation removal function as described in claim 1, characterized in that: The lifting block is connected to a second upper connecting shaft at its other end in the front-rear direction, and the end of the connecting rod away from the lower connecting shaft is rotatably connected to the second upper connecting shaft.

6. The rotary tiller with tire indentation removal function as described in claim 1, characterized in that: The rotary tiller frame between the column and the corresponding side transmission box is fixedly connected to an upward-facing end with a mounting housing having an upward opening. A lifting plate that can be raised and lowered is slidably connected inside the mounting housing. A compression spring is connected between the lower side of the lifting plate and the upper end of the bottom of the mounting housing. A lower tension sprocket is rotatably connected above the lifting plate. The upper end of the lower tension sprocket engages with the downward-facing end of the corresponding lower transmission chain, and the compression spring is always in a compressed state.

7. The rotary tiller with tire indentation removal function as described in any one of claims 1 to 6, characterized in that: An upper intermediate transmission box is fixedly connected to the upper end of the rotary tiller frame behind the power box. A rotary tillage power shaft is connected to the upper intermediate transmission box and the power box. A second transmission gear is also connected to the power input shaft. An intermediate transmission gear is connected to the rotary tillage power shaft inside the power box. A second transmission bevel gear is connected to the rotary tillage power shaft extending into the upper intermediate transmission box. An intermediate shaft is also rotatably connected inside the upper intermediate transmission box. A third transmission gear and a second driven bevel gear that cooperates with the second transmission bevel gear are connected to the intermediate shaft. A lower intermediate transmission box is fixedly connected to the lower end of the rotary tiller frame. A second driven gear that cooperates with the third transmission gear is rotatably connected inside the lower intermediate transmission box. The second driven gear is connected to the rotary tillage blade shaft.

8. The rotary tiller with tire indentation removal function as described in any one of claims 1 to 6, characterized in that: The lifting block is connected to a linear guide clamp for releasing the lifting block or clamping the lifting block onto the column.

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