Rotary cultivator with tire indentation eliminating function

Abstract

The invention discloses a rotary cultivator with a tire indentation eliminating function, which comprises a rotary tillage assembly, the rotary tillage assembly comprises a rotary tillage rack, the front part of the rotary tillage rack is fixedly connected with a suspension bracket, the rotary tillage rack behind the suspension bracket is rotatably connected with a rotary tillage cutter shaft, and a plurality of rotary tillage cutters are arranged on the rotary tillage cutter shaft; a tire indentation eliminating assembly is connected to the rotary tillage rack and comprises a power box, a power input shaft is rotationally connected to the power box, side transmission boxes are fixed to the positions, at the left end and the right end of the power box, of the upper side of the rotary tillage rack, first vertical shafts are rotationally connected to the side transmission boxes, the power input shaft is in transmission connection with the first vertical shafts, and first tool aprons are fixed to the lower ends of the first vertical shafts. A plurality of first tire indentation eliminating cutters are arranged on the first cutter holder; according to the device, a tire compaction layer can be loosened before rotary tillage and soil breaking of the rotary tillage cutter, synchronous deep soil breaking of a wheel mark area and a non-compacted land block is achieved, the soil hardness difference is eliminated, and it is guaranteed that a tillage layer is evenly and finely broken as a whole.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a rotary tiller with the function of eliminating tire indentations. Background Art

[0002] Before sowing, the farmland needs to be rotary tilled to loosen the soil. In the prior art, a rotary tiller is generally used to loosen the soil. The existing rotary tiller includes a rotary tiller assembly, including a rotary tiller frame, the front of which is fixedly connected to a suspension bracket, a rotary tiller shaft rotatably connected to the rotary tiller frame behind the suspension bracket, a plurality of rotary tiller blades arranged on the rotary tiller shaft, and the rotary tiller frame is liftably connected to the rear of a traveling device, which is usually a tractor. When preparing for rotary tillage in the farmland, the lifting device on the tractor lowers the rotary tiller. When the tractor moves forward, the rotary tiller shaft rotates continuously, and the rotary tiller tills the soil, destroying the soil layer. At the same time, the tires of the tractor will cause obvious indentations on the farmland. The indentations are vertically compacted. The rotary tiller has a poor effect on breaking the compacted wheel mark soil layer. The area where the tire indentations are located becomes a problem in the overall operation, affecting the subsequent sowing quality and the uniformity of crop emergence. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

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

[0005] Therefore, the purpose of the present invention is to provide a rotary tiller with the function of eliminating tire indentations, which can loosen the tire compaction layer before the rotary tiller rotates and breaks the soil, achieve synchronous deep soil crushing in the wheel mark area and the uncompacted solid area, eliminate the difference in soil hardness, ensure that the entire tillage layer is evenly and finely crushed, and meet the requirements of precision agriculture for surface flatness.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a rotary tiller with the function of eliminating tire indentations, comprising a rotary tilling assembly, the rotary tilling assembly comprising a rotary tilling frame, the front of the rotary tilling frame being fixedly connected to a suspension bracket, the rotary tilling frame behind the suspension bracket being rotatably connected to a rotary tilling blade shaft, and a plurality of rotary tilling blades being arranged on the rotary tilling blade shaft; the rotary tilling frame being connected to the tire indentation eliminating assembly, the tire indentation eliminating assembly comprising a power box, the power box being rotatably connected to a power input shaft, the upper sides of the rotary tilling frames at the left and right ends of the power box being fixedly connected It is connected to a side transmission box, and the side transmission box is rotatably connected to a vertically arranged first vertical shaft and a second vertical shaft. The first vertical shaft is between the second vertical shaft and the power box, and the rotation directions of the first vertical shaft and the second vertical shaft are opposite. The power input shaft is transmission-connected to the first vertical shaft and the second vertical shaft. One end of the first vertical shaft extending downward from the rotary tiller frame is fixedly connected to a first knife seat, and a plurality of first tire indentation eliminating knives are arranged on the first knife seat. One end of the second vertical shaft extending downward from the rotary tiller frame is fixedly connected to a second knife seat, and a plurality of second tire indentation eliminating knives are arranged on the second knife seat.

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

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

[0009] As a further preferred solution of the present invention, the position of the side transmission box in the left and right directions is adjustable.

[0010] As a further preferred embodiment of the present invention, it also includes two groups of position adjustment components corresponding one to one with the transmission components, the position adjustment components include 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, the position adjustment driver is connected to a position adjustment rod that performs reciprocating linear motion in the left and right directions, the position adjustment rod is fixedly connected to the corresponding side transmission box at one end away from the position adjustment driver, and the side transmission box is slidably connected to the upper side of the rotary tiller frame.

[0011] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The tooth on the attachment piece is meshed with tooth on upper sprocket.

[0012] As a further preferred solution of the present invention, the other end of the lifting block in the front-to-back 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, the upward end of the rotary tiller frame between the column and the corresponding side transmission box is fixedly connected to a mounting shell with an upward opening, a lifting plate that can be raised and lowered is slidably connected in the mounting shell, a compression spring is connected between the lower side of the lifting plate and the upper end of the bottom of the mounting shell, a lower tensioning sprocket is rotatably connected above the lifting plate, the upper end of the lower tensioning sprocket cooperates with the downward end of the corresponding transmission chain below, and the compression spring is always in a compressed state.

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

[0015] As a further preferred solution of the present invention, the lifting block is connected to a linear guide rail clamp for loosening the lifting block or clamping the lifting block on the column.

[0016] Compared with the prior art, the present invention has the following technical effects: two vertical tire mark elimination knives that rotate in opposite directions and continuously are used to loosen the compacted soil in the vertical direction, eliminate tire marks, ensure that the cultivated layer is uniformly and finely crushed as a whole, and improve the quality of subsequent planting operations; before operation, the position of the tire mark elimination component is adjusted according to the wheelbase of the matching walking device, and the transmission chain serves as a key component in the transmission connection process between the power input shaft and the vertical tire mark elimination knife. During the adjustment of the vertical tire mark elimination knife, the first tensioning sprocket moves with the movement of the transmission box, and the second tensioning sprocket moves upward in coordination with the compression spring, so that the transmission chain is always in a tensioned state during the movement of the transmission box, thereby realizing the position adjustment of the tire mark elimination component and ensuring the reliability of the operation after the position adjustment of the tire mark elimination component; in this application, the power input shaft is used as the power for the rotary tillage knife and each vertical tire mark elimination knife, and no other external power source is required; it can be applied to rotary tillage operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them: Figure 1 It is the front view of the present invention.

[0018] Figure 2 The three-dimensional structure of the present invention Figure 1 .

[0019] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure 4 The three-dimensional structure of the present invention Figure 2 .

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0022] Figure 6 The three-dimensional structure of the present invention Figure 3 .

[0023] Figure 7 for Figure 6 A partial enlarged view of point C in the middle.

[0024] Figure 8 The three-dimensional structure of the present invention Figure 4 .

[0025] Figure 9 for Figure 8A partial enlarged view of point D in the middle.

[0026] Figure 10 Schematic diagram comparing the position of the middle side transmission box before and after the movement of the present invention.

[0027] In the figure, 1 rotary tillage assembly, 101 rotary tillage shaft, 102 rotary tillage frame, 102-1 sliding groove, 103 rotary tillage blade, 104 hanging bracket, 2 tire indentation elimination assembly, 201 first knife seat, 202 first tire indentation elimination knife, 203 second tire indentation elimination knife, 204 second knife seat, 205 power input shaft, 206 upper intermediate transmission box, 207 side transmission box, 208 slide rail, 3 transmission assembly, 301 first driven gear, 302 first transmission gear, 303 transmission shaft, 304 transmission chain, 305 driving sprocket, 306 first transmission bevel gear, 307 first driven bevel gear, 308 driven sprocket, 4 position adjustment assembly, 401 position adjustment driver, 4 02 Position adjustment rod, 403 lifting block, 404 Second linear guide 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 tillage power shaft, 508 Second transmission bevel gear, 509 Intermediate shaft, 510 Lower intermediate transmission box. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" 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 various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0031] Example 1: Reference Figures 1 to 3 、 Figure 6 and Figure 7This embodiment provides a rotary tiller with the function of eliminating tire indentations, which can eliminate tire indentations to eliminate differences in soil hardness and ensure that the entire tillage layer is evenly and finely crushed.

[0032] A rotary tiller with a tire indentation elimination function includes a rotary tilling assembly 1, which includes a rotary tilling frame 102, a front portion of the rotary tilling frame 102 fixedly connected to a suspension bracket 104, a rotary tilling blade shaft 101 rotatably connected to the rotary tilling frame 102 behind the suspension bracket 104, and a plurality of rotary tilling blades 103 arranged on the rotary tilling blade shaft 101; a tire indentation elimination assembly 2 is connected to the rotary tilling frame 102 in front of the rotary tilling blade shaft 101, and the tire indentation elimination 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 tilling frames 102 at the left and right ends of the power box, and a first vertical shaft and a second vertical shaft are rotatably connected to the side transmission box 207. The first vertical shaft is between the second vertical shaft and the power box, and the rotation directions of the first vertical shaft and the second vertical shaft are opposite. The power input shaft 205 is transmission-connected to the first vertical shaft and the second vertical shaft. One end of the first vertical shaft extending downward from the rotary tiller frame 102 is fixedly connected to the first knife seat 201, and a plurality of first tire indentation eliminating knives 202 are arranged on the first knife seat 201. One end of the second vertical shaft extending downward from the rotary tiller frame 102 is fixedly connected to the second knife seat 204, and a plurality of second tire indentation eliminating knives 203 are arranged on the second knife seat 204. The first tire indentation eliminating knife 202 and the second tire indentation eliminating knife 203 have the same structure, and the bottom of the first tire indentation eliminating knife 202 is not higher than the lowest position of the rotating outer edge of the rotary tiller knife 103.

[0033] The front traveling device is connected to the suspension bracket 104 through the lifting device. During operation, the traveling device lowers the suspension bracket 104 through the lifting device, so that the rotary tillage blade 103 and the tire indentation elimination blade are lowered to the required height; the first tire indentation elimination blade 202 and the second tire indentation elimination blade 203 are continuously rotated, and the two rotate in opposite directions, continuously milling to eliminate tire indentations, and the rotary tillage blade 103 further tills the soil after the tire indentations are eliminated. There is basically no difference in the hardness of the farmland soil after rotary tillage, which is conducive to subsequent planting operations.

[0034] The first gear 302 is meshed with the second gear 302 and the second gear 303 is meshed with the first gear 302. The upper intermediate transmission box 206 is connected to the upper end of the rotary tillage frame 102. The upper intermediate transmission box 206 is at the rear of the power box. The upper intermediate transmission box 206 and the power box are connected to a rotary tillage power shaft 507. The power input shaft 205 is also connected to a second transmission gear 505. The rotary tillage power shaft 507 in the power box is connected to an intermediate transmission gear 506. The rotary tillage power shaft 507 extending into the upper intermediate transmission box 206 is connected to a second transmission bevel gear 508. The second transmission box is also rotatably connected to the intermediate transmission gear 506. The intermediate shaft 509 is connected to the third transmission gear 502 and the second driven bevel gear 501 that cooperates with the second transmission bevel gear 508. The lower end of the rotary tiller frame 102 is fixedly connected to the lower intermediate transmission box 510 with an upward mounting port. The lower intermediate transmission box 510 is rotatably connected to the intermediate gear 503 that cooperates with the third transmission gear 502. The second driven gear 504 is connected to the rotary tiller shaft 101, and the second driven gear 504 cooperates with the lower end of the intermediate gear 503.

[0035] The power output by the tractor is transmitted to the power input shaft 205 through the universal joint. The power input shaft 205 drives the two driving sprockets 305 and the second transmission gear 505 to rotate. The driving sprocket 305 drives the driven sprocket 308 to rotate via the corresponding transmission chain 304. The driven sprocket 308 drives 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 the first tire mark elimination knives 202 to rotate via the first knife seat 201. The first transmission gear 302 drives the second vertical shaft to rotate via the driven gear. The second vertical shaft drives the second tire mark elimination knives 203 to rotate via the second knife seat 204. The first tire mark eliminating knife 202 and the second tire mark eliminating knife 203 rotate in opposite directions, continuously milling the compacted soil to loosen the soil at the tire mark; at the same time, the second transmission gear 505 drives the rotary tillage power shaft 507 to rotate through the intermediate transmission gear 506, and the rotary tillage power shaft 507 drives the second transmission bevel gear 508 to rotate, the second transmission bevel gear 508 rotates through the second driven bevel gear 501, 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 through the second driven gear 504, and the rotary tillage blade shaft 101 drives the rotary tillage blade 103 to rotate to perform rotary tillage operation; through the combined arrangement of the above structures, the synchronous operation of tire mark elimination and rotary tillage is achieved.

[0036] Example 2: Reference Figure 4 、 Figure 5 and Figures 8 to 10 This embodiment provides a rotary tiller with the function of eliminating tire indentations, which can further realize the overall position adjustment of the tire indentation eliminating knife and improve the scope of application.

[0037] Specifically, the position of the side transmission box 207 in the left and right directions is adjustable. The structure for realizing position adjustment is specifically as follows: it also includes two groups of position adjustment components 4 corresponding to the transmission components 3 one by one. The position adjustment component 4 includes a position adjustment driver 401. The two position adjustment drivers 401 are respectively fixedly connected to the left and right sides of the upper end of the rotary tiller frame 102. The position adjustment driver 401 is connected to a position adjustment rod 402 that performs reciprocating linear motion in the left and right directions. The position adjustment rod 402 is fixedly connected to the corresponding side transmission box 207 at one end away from the position adjustment driver 401. 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 are respectively provided with sliding openings, and the rotary tiller frame 102 on the front and rear sides of the sliding openings is fixedly connected with a slide rail 208. The front and rear ends of the side transmission box 207 are respectively provided with sliding grooves, and the side transmission box 207 is slidably connected to the slide rail 208 through the sliding groove.

[0038] Before operation, the positions of the two side transmission boxes 207 are adjusted according to the wheelbase of the tractor, the position adjustment driver 401 is activated, and the position adjustment rod 402 drives the side transmission boxes 207 to move. When the side transmission boxes 207 move to the appropriate position, that is, when the first tire indentation elimination knife 202 and the second tire indentation elimination knife 203 cover the tire directly in front, the position adjustment driver 401 stops.

[0039] Specifically, the position adjustment component 4 also includes a transmission rod 410, a slider 408 slidably connected to the upper side of the rotary tiller frame 102, and a column 405 arranged 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, and the slider 408 is slidably connected to the horizontal guide rail 406. The slider 408 is connected to a lower connecting shaft 409 horizontally arranged in the front-to-back direction. One end of the transmission rod 410 is fixedly connected to one end of the side transmission box 207 opposite to the power box, and the other end of the transmission rod 410 extends in the direction of the power box. The other end of the transmission rod 410 is connected to the lower connecting shaft 409, and the lower connecting shaft 409 is rotatably connected with the connecting rod 407. The column 405 is slidably connected to the lifting block 403, and one end of the lifting block 403 in the front-to-back direction is connected to the first upper connecting shaft 416. The connecting shaft 416 is rotatably connected to an upper tensioning sprocket 417, and a downward end of a section of the transmission chain 304 cooperates with the upper tensioning sprocket 417. The other end of the lifting block 403 in the front-to-back direction is connected to a second upper connecting shaft 418, and 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 upward end of the rotary tiller frame 102 between the column 405 and the corresponding side transmission box 207 is fixedly connected to a mounting shell 414 with an upward opening, and a lifting plate 411 that can be lifted and lowered is slidably connected in the mounting shell 414, and 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 shell 414, and the upper side of the lifting plate 411 is fixedly connected to a supporting bracket, and the upper end of the supporting bracket is rotatably connected to a lower tensioning sprocket 415, and the upper end of the lower tensioning sprocket 415 cooperates with the downward end of the corresponding transmission chain 304 below, and the compression spring 412 is always in a compressed state.

[0040] The compression spring 412 is always in a compressed state; take the wheelbase becoming smaller as an example to illustrate. At this time, the two side transmission boxes 207 need to move toward 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, and 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, and the lifting block 403 drives the upper tensioning sprocket 417 to move upward via the first upper connecting shaft 416. At the same time, the lower tensioning sprocket 415 moves upward synchronously under the action of the compression spring 412 to dynamically tension the transmission chain 304 to avoid the transmission chain 304 from loosening during the movement of the side transmission box 207, thereby achieving position adjustment and ensuring the reliability of the transmission connection between the power input shaft 205 and the first vertical shaft. For easy understanding, this application provides a schematic diagram of the side transmission box 207 after sending the position change, for reference Figure 10 The black lines of the tire indentation elimination component 2 and the position adjustment component 4 are the original positions, and the red lines are the adjusted positions. It can be seen that the stroke changes of the upper tensioning sprocket 417 and the lower tensioning sprocket 415.

[0041] Specifically, the lifting block 403 is connected to a first linear guide clamp for loosening the lifting block 403 or clamping the lifting block 403 on the column 405, and the slider 408 is also connected to a second linear guide clamp 404 for loosening the slider 408 or clamping the slider 408 on the horizontal guide rail 406. The first linear guide clamp and the second linear guide clamp 404 are both existing technologies. Before adjusting the position, the first linear guide clamp and the second linear clamp are loosened so that the lifting block 403 can slide up and down along the column 405 and the slider 408 can slide left and right along the horizontal guide rail 406. After the position adjustment is completed, the first linear guide clamp and the second linear clamp are tightened so that the first linear guide clamp clamps the lifting block 403 on the column 405 and the second linear clamp clamps the slider 408 on the horizontal guide rail 406, thereby achieving fixation of the side transmission box 207 after position adjustment to prevent the transmission chain 304 from loosening.

[0042] The front and back directions in this application are based on the main view as a reference, the direction perpendicular to the paper and forward is the front, the reverse direction is the rear, and the left and right direction is the horizontal direction perpendicular to the front and back directions.

Claims

1. A rotary tiller with a tire indentation elimination 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 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; characterized in that: The tire indentation elimination component is connected to the rotary tillage frame, and the tire indentation elimination component includes a power box, the power box is rotatably connected to a power input shaft, and the upper sides of the rotary tillage frames at the left and right ends of the power box are fixedly connected to side transmission boxes, and the side transmission boxes are rotatably connected to a vertically arranged first vertical shaft and a second vertical shaft, the first vertical shaft is between the second vertical shaft and the power box, and the rotation directions of the first vertical shaft and the second vertical shaft are opposite, the power input shaft is transmission-connected to the first vertical shaft and the second vertical shaft, and one end of the first vertical shaft extending downward from the rotary tillage frame is fixedly connected to a first knife seat, and a plurality of first tire indentation elimination knives are arranged on the first knife seat, and one end of the second vertical shaft extending downward from the rotary tillage frame is fixedly connected to the second knife seat, and a plurality of second tire indentation elimination knives are arranged on the second knife seat.

2. The rotary tiller with tire mark elimination function according to claim 1, characterized in that: The power input shaft is connected to the first vertical shaft via the transmission assembly.

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

4. The rotary tiller with tire mark elimination function according to claim 3, characterized in that: The position of the side transmission box is adjustable in the left and right directions.

5. The rotary tiller with tire mark elimination function according to claim 4, characterized in that: It also includes two groups of position adjustment components corresponding one to one with the transmission components, the position adjustment components include position adjustment drivers, the two position adjustment drivers are respectively fixedly connected to the left and right sides of the upper end of the rotary tiller frame, the position adjustment driver is connected to a position adjustment rod that performs reciprocating linear motion in the left and right directions, the position adjustment rod is fixedly connected to the corresponding side transmission box at one end away from the position adjustment driver, and the side transmission box is slidably connected to the upper side of the rotary tiller frame.

6. The rotary tiller with tire mark elimination function according to claim 5, characterized in that: The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket.

7. The rotary tiller with tire mark elimination function according to claim 6, characterized in that: The other end of the lifting block in the front-to-back direction is connected to a second upper connecting shaft, and one end of the connecting rod away from the lower connecting shaft is rotatably connected to the second upper connecting shaft.

8. The rotary tiller with tire mark elimination function according to claim 6 or 7, characterized in that: The upward end of the rotary tiller frame between the column and the corresponding side transmission box is fixedly connected to a mounting shell with an upward opening, and a lifting plate that can be raised and lowered is slidably connected in the mounting shell, and a compression spring is connected between the lower side of the lifting plate and the upper end of the bottom of the mounting shell. A lower tensioning sprocket is rotatably connected above the lifting plate, and the upper end of the lower tensioning sprocket cooperates with the downward end of the corresponding transmission chain below, and the compression spring is always in a compressed state.

9. The rotary tiller with tire mark elimination function according to any one of claims 1 to 8, characterized in that: The upper end of the rotary tiller frame behind the power box is fixedly connected to the upper intermediate transmission box, the upper intermediate transmission box and the power box are connected to the rotary tiller power shaft, the power input shaft is also connected to the second transmission gear, the rotary tiller power shaft in the power box is connected to the intermediate transmission gear, the rotary tiller power shaft extending into the upper intermediate transmission box is connected to the second transmission bevel gear, the second transmission box is also rotatably connected with an intermediate shaft, the intermediate shaft is connected to the second driven bevel gear that cooperates with the third transmission gear and the second transmission bevel gear, the downward end of the rotary tiller frame is fixedly connected to the lower intermediate transmission box, the lower intermediate transmission box is rotatably connected with the second driven gear that cooperates with the third transmission gear, and the second driven gear is connected to the rotary tiller shaft.

10. The rotary tiller with tire mark elimination function according to claim 6 or 7, characterized in that: The lifting block is connected to a linear guide rail clamp for loosening the lifting block or clamping the lifting block on the column.

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