Bar tillage machine

Abstract

The utility model relates to a strip tillage machine which comprises a support (1), a rotary blade group (2), a soil pressing roller (3) and a power transmission system (4), and a connecting piece (11) is arranged at the front end of the support. The rotary blade set is arranged in the middle of the support, and the soil pressing roller is arranged on the rear side of the support and can rotate up and down along a center shaft (51) of the suspension system. The rotary tillage box (41) is provided with a connecting input shaft, a rotary tillage output shaft and a connecting output shaft. The rotary tillage output shaft is connected with the rotary tillage cutter set, a gearbox (42) is located on the rear side of the rotary tillage box, a speed change input shaft and a speed change output shaft are arranged on the gearbox, and the speed change input shaft is connected with the connecting output shaft. The variable-speed output shaft extends in the left-right direction, the two ends of the variable-speed output shaft extend to the outer side of the gearbox, and a driver (43) is connected with the variable-speed output shaft and a soil pressing rotating shaft of the soil pressing roller. The axis of the variable-speed output shaft and the axis of the center shaft are collinear. The power transmission system can be prevented from being damaged, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to a strip tiller for use in farmland, and more particularly to the structure of the strip tiller. Background Technology

[0002] Tillage refers to the process of turning over and loosening the soil to restore its granular structure. In agricultural production, strip tillers are commonly used for this purpose. A strip tiller, from front to back, consists of a grooving shovel, rotary tillers, and a compaction roller. When in use, the strip tiller is mounted on a tractor. The rotary tillers and compaction roller are connected to the tractor's power unit. As the tractor pulls the strip tiller forward, the grooving shovel turns over the soil, the tractor's power unit drives the rotary tillers to rotate and till the soil, and the compaction roller breaks up and flattens large clods of soil. Strip tillers can turn over better-quality lower soil to the top layer and less fertile upper soil to the bottom layer, burying crop residues, weeds, and fertilizers, thus loosening the soil and promoting crop growth.

[0003] Different regions have different soil types, which can be divided into three categories: sandy soil, clay soil, and loam. Different types of soil have different compositions, viscosity, and moisture content. When crushing and compacting soil clods in different soils, for example, loam clods are of moderate size and have low hardness, making them easy to crush into fine powder by the compaction roller, resulting in poor soil permeability and aeration, which is not conducive to crop growth. Sandy soil clods are larger and have high hardness, making them difficult to crush by the compaction roller, resulting in rapid soil permeability and poor water retention, which is also not conducive to crop growth.

[0004] In addition, when a strip tiller performs rotary tillage, the soil turned over is uneven, and the clods are of different sizes. In order to improve the crushing effect, the existing compaction roller is usually designed to be height-adjustable, so that the compaction roller can rise and fall according to the undulation of the soil. Therefore, the power transmission mechanism of the compaction roller also needs to rotate or extend and retract with the rise and fall of the compaction roller. The existing power transmission mechanism of the compaction roller is usually connected to the compaction roller by a drive shaft, commutator and universal joint. During long-term operation, due to factors such as the asynchronous rise and fall of the compaction roller and the power transmission mechanism, the power transmission mechanism of the compaction roller is prone to damage, which affects normal operation and reduces the service life of the strip tiller.

[0005] The purpose of this invention is to solve the problem that the power transmission mechanism of the soil pressing roller of existing strip tillage machines is easily damaged. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a strip tiller, including a support frame 1, a rotary tiller assembly 2, a soil pressing roller 3, and a power transmission system 4. The support frame 1 has a connector 11 at its front end for connection to a tractor. The rotary tiller assembly 2 is located in the middle of the support frame 1, and the soil pressing roller 3 is mounted on the rear side of the support frame 1 via a suspension system 5. The soil pressing roller 3 can rotate up and down along the central axis 51 extending in the left-right direction of the suspension system 5. The power transmission system 4 is fixedly mounted on the support frame 1 and includes a rotary tiller box 41, a gearbox 42, and a transmission 43. The rotary tiller box 41 has a connecting input shaft 411, a rotary tiller output shaft 412, and a connecting output shaft 413. The connecting input shaft 411 is used to connect to the tractor's power unit, and the rotary tiller output shaft 412 is connected to the rotary tiller assembly 2 to drive the rotary tiller assembly 2 to rotate.

[0007] The gearbox 42 is located behind the rotary tiller 41. The gearbox 42 is equipped with a gear input shaft 421 and a gear output shaft 422. The gear input shaft 421 is connected to the output shaft 413. The gear output shaft 422 extends in the left-right direction, connects to the gear input shaft 421 in the middle, and extends to the left and right sides of the gearbox 42 at both ends.

[0008] The transmission device 43 is connected to the speed-changing output shaft 422 and the soil-pressing shaft 31 of the soil-pressing roller 3, respectively, and is used to transmit the power output from the speed-changing output shaft 422 to the soil-pressing shaft 31 of the soil-pressing roller 3, driving the soil-pressing roller 3 to rotate. The axis of the speed-changing output shaft 422 and the axis of the central shaft 51 are collinear.

[0009] This invention, by aligning the axis of the transmission output shaft 422 and the axis of the central shaft 51 collinearly, allows the soil roller 3 to rise and fall with the undulations of the soil during rotary tillage as the soil roller 3 crushes the tilled soil. During this movement, the soil roller 3 rotates around the central shaft 51. Simultaneously, the transmission device 43 rotates synchronously along the transmission output shaft 422. Because the axes of the transmission output shaft 422 and the central shaft 51 are collinear, the transmission device 43 only needs to move synchronously with the soil roller 3, unaffected by external forces in other directions, such as pressure or tension along the axis. It does not require extension, contraction, or torsion, thus preventing damage to the transmission device 43 and extending its service life. This invention solves the problem of easy damage to the power transmission mechanism of the soil roller 3 in existing rotary tillers.

[0010] Preferably, the transmission device 43 includes a housing 431 and a driving gear 432, a driven gear 433, and a plurality of transmission gears 434 disposed within the housing 431. Both ends of the housing 431 are rotatably connected to the speed-changing output shaft 422 and the soil-pressing shaft 31 of the soil-pressing roller 3, respectively. The driving gear 432 is located at one end within the housing 431 and is sleeved on the speed-changing output shaft 422. The driven gear 433 is located at the other end within the housing 431 and is sleeved on the soil-pressing shaft 31 of the soil-pressing roller 3. The driven gear 433 is rotatably connected to the housing 431. The plurality of transmission gears 434 are arranged sequentially from the driving gear 432 to the driven gear 433 within the housing 431 and mesh with each other. The transmission gear 434 closest to the driving gear 432 meshes with the driving gear 432, and the transmission gear 434 closest to the driven gear 433 meshes with the driven gear 433, thus connecting the driven gear 433 to the driving gear 432.

[0011] By configuring the transmission 43, which includes a housing 431, a drive gear 432, and transmission gears 434, the two ends of the housing 431 are rotatably connected to the speed output shaft 422 and the soil pressing shaft 31 of the soil pressing roller 3, respectively. The drive gear 432 is sleeved on the speed output shaft 422, and the driven gear 433 is sleeved on the soil pressing shaft 31 of the soil pressing roller 3. The drive gear 432 is connected to the multiple transmission gears 434 set in the housing 431. The housing 431 fixes each gear, so that each gear can only rotate and cannot move, thereby reducing damage and extending the service life of the transmission 43.

[0012] Preferably, the transmission input shaft 421 extends in the front-rear direction, with its front end extending to the front side of the gearbox 42 and connected to the connecting output shaft 413. Its rear end is located inside the gearbox 42 and is provided with a driving bevel gear 423. A driven bevel gear 424 is provided on the transmission output shaft 422, and the driven bevel gear 424 and the driving bevel gear 423 mesh with each other.

[0013] Preferably, the suspension system 5 includes a central shaft 51, a swing arm 52, a mounting bracket 53, a telescopic rod 54, and a spring 55. The central shaft 51 is mounted on the rear side of the bracket 1 via a mounting seat 56. One end of the swing arm 52 is rotatably connected to the central shaft 51, and the other end is rotatably connected to the soil-pressing shaft 31 of the soil-pressing roller 3. The lower end of the mounting bracket 53 is fixedly mounted on the rear side of the bracket 1, and the upper end extends to above the middle of the swing arm 52, with a collar 531 provided at the upper end. The lower end of the telescopic rod 54 is connected to the swing arm 52, and the upper end passes through the collar 531 and extends above the collar 531, and can slide up and down along the collar 531. The spring 55 is sleeved on the telescopic rod 54, with both ends abutting against the collar 531 and the swing arm 52, respectively.

[0014] Therefore, when the strip tiller is performing rotary tillage, the pressing roller 3 will rise and fall with the undulation of the soil as it crushes the soil after rotary tillage. When the pressing roller 3 rises and falls, it rotates around the central axis 51 under the action of the swing arm 52. The elastic force of the spring 55 can give the pressing roller 3 downward pressure, so that the pressing roller 3 crushes the soil clods after rotary tillage and flattens the soil.

[0015] Preferably, the front end of the support 1 is provided with a grooving shovel 12. The grooving shovel 12 can turn over the soil, turning the lower layer of better soil to the upper layer and the upper layer of soil with low fertility to the lower layer, and turning over and burying stubble, weeds and fertilizers into the soil, so as to facilitate rotary tillage by the rotary tiller set 2 behind.

[0016] Preferably, two grooving shovels 12 and two rotary tillage blade sets 2 are provided. The two grooving shovels 12 are symmetrically arranged on the left and right sides of the support 1, and the two rotary tillage blade sets 2 are symmetrically arranged on the left and right sides of the support 1. The symmetrical arrangement of two grooving shovels 12 and two rotary tillage blade sets 2 on the left and right sides of the support 1 can keep the force balanced when the strip tiller is performing rotary tillage operations, and can also improve the working efficiency.

[0017] Preferably, there are two pressing rollers 3 and two transmission devices 43. The two pressing rollers 3 are symmetrically arranged on the left and right sides of the support 1, and the two transmission devices 43 are located on the left and right sides of the gearbox 42, respectively, connecting the gearbox output shaft 422 to the pressing shaft 31 of the pressing roller 3.

[0018] Preferably, support wheels 13 are provided on both the left and right sides of the support frame 1. When the strip tiller is working, the support wheels 13 can support the support frame 1 to maintain a certain height from the ground, so that the depth of soil turning by the grooving shovel 12 and the depth of soil turning by the rotary tiller 2 are moderate, and the force of the soil crushing roller 3 in crushing the soil is kept stable. Attached Figure Description

[0019] Figure 1 Schematic diagram of the overall structure of the strip tiller;

[0020] Figure 2 A schematic diagram of the strip tiller from another angle;

[0021] Figure 3 A top-view structural diagram of a strip tiller;

[0022] Figure 4 Schematic diagram of the power transmission system and the soil compactor roller;

[0023] Figure 5 Top view of the power transmission system;

[0024] Figure 6 Schematic diagram of the internal structure of the rotary tiller box;

[0025] Figure 7 Another angle view of the internal structure of the rotary tiller box;

[0026] Figure 8 Schematic diagram of the gearbox and transmission assembly structure;

[0027] Figure 9 Schematic diagram of the connection between the drive unit and the soil compaction roller.

[0028] In the diagram, 1. Support frame, 11. Connector, 12. Grooving shovel, 13. Support wheel, 14. Leveling roller, 2. Rotary tiller blade assembly, 21. Rotary tiller blades, 22. Rotary tiller shaft, 3. Pressing roller, 31. Pressing shaft, 32. Roller, 4. Power transmission system, 41. Rotary tiller box, 411. Connecting input shaft, 412. Rotary tiller output shaft, 413. Connecting output shaft, 414. Housing, 415. Central rotating shaft, 416. Mounting plate, 417. Driving bevel gear, 418. Driven bevel gear, 419. Middle 410. Center gear, 4101. Rotary tillage gear, 4102. Connecting gear, 42. Gearbox, 421. Speed ​​input shaft, 422. Speed ​​output shaft, 423. Driving bevel gear, 424. Driven bevel gear, 43. Transmission unit, 431. Housing, 432. Driving gear, 433. Driven gear, 434. Transmission gear, 5. Suspension system, 51. Central shaft, 52. Swing arm, 53. Mounting bracket, 531. Collar, 54. Telescopic rod, 55. Spring, 56. Mounting seat. Detailed Implementation

[0029] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the strip tiller includes a frame 1, a rotary tiller blade assembly 2, a soil pressing roller 3, and a power transmission system 4. The front end of the frame 1 is equipped with a connector 11, a leveling roller 14, and two grooving shovels 12.

[0031] Support wheels 13 are provided on both the left and right sides of the support frame 1. When the strip tiller is performing rotary tillage, the support wheels 13 can support the support frame 1 to maintain a certain height from the ground, so that the depth of soil turning by the grooving shovel 12 and the depth of soil turning by the rotary tillage blade assembly 2 are moderate, and the force of the soil crushing roller 3 in crushing the soil is kept stable.

[0032] The connector 11 is detachably connected to the tractor by bolts and is used to fix the bracket 1 to the tractor.

[0033] The grooving shovel 12 is fixedly installed below the support 1. Two grooving shovels 12 are symmetrically arranged on the left and right sides of the support 1. The grooving shovels 12 can turn over the soil, turning the better soil at the bottom to the top layer and the less fertile soil at the top layer to the bottom layer. It also turns over and buries stubble, weeds, and fertilizer into the soil, making it easier for the rotary tiller blade assembly 2 to perform rotary tillage. Setting two grooving shovels 12 can keep the force balanced when the strip tiller is performing rotary tillage operations and can also improve the working efficiency.

[0034] The leveling roller 14 is rotatably mounted below the center of the front end of the support 1, located slightly behind the middle of the two grooving shovels 12. The leveling roller 14 can rotate freely along the axis set in the left and right direction, and is used to initially flatten the soil plowed out by the two grooving shovels 12 towards the middle, so as to facilitate rotary tillage by the rotary tiller set 2 behind.

[0035] The rotary tiller blade assembly 2 is located in the middle of the support 1, behind the grooving shovel 12. The rotary tiller blade assembly 2 includes a rotary shaft 22 and multiple rotary tiller blades 21 mounted on the rotary shaft 22. The rotary shaft 22 is rotatably mounted on the support 1 and extends in the left-right direction. When the rotary shaft 22 rotates, it drives the rotary tiller blades 21 to rotate, thus rotary tilling the soil plowed out by the grooving shovel 12, breaking up and mixing large clumps of soil.

[0036] There are two rotary tillage blade sets 2, which are symmetrically arranged on the left and right sides of the support 1. The two grooving shovels 12 help maintain a balanced force during rotary tillage operations and also improve work efficiency.

[0037] The soil compaction roller 3 is mounted below the rear end of the support 1 via the suspension system 5, located behind the rotary tiller assembly 2. The soil compaction roller 3 includes a soil compaction shaft 31 and rollers 32 mounted on the shaft. Both ends of the soil compaction shaft 31 are rotatably connected to the suspension system 5.

[0038] The suspension system 5 includes a central shaft 51, a swing arm 52, a mounting bracket 53, a telescopic rod 54, and a spring 55. The central shaft 51 is mounted on the rear side of the bracket 1 via a mounting seat 56.

[0039] One end of the swing arm 52 is rotatably connected to the central shaft 51, and the other end is rotatably connected to the soil pressing shaft 31 of the soil pressing roller 3. The soil pressing roller 3 can rotate up and down along the central shaft 51 of the suspension system 5, which extends in the left and right direction.

[0040] The lower end of the mounting bracket 53 is fixedly installed on the rear side of the bracket 1, and the upper end extends to the middle of the swing arm 52. A collar 531 is provided at the upper end.

[0041] The lower end of the telescopic rod 54 is connected to the swing arm 52, and the upper end extends through the collar 531 to the top of the collar 531, and can slide up and down along the collar 531.

[0042] Spring 55 is sleeved on telescopic rod 54, with its two ends abutting against collar 531 and swing arm 52 respectively.

[0043] The suspension system 5 allows the soil compaction roller 3 to rise and fall according to the ground height, so that the soil compaction roller 3 can apply more uniform pressure to the soil, crush the larger soil clumps, and prevent the soil in the raised areas from being compacted while the soil clumps in the sunken areas cannot be crushed when the ground is uneven, thus affecting the growth of crops.

[0044] Therefore, when the strip tiller is performing rotary tillage, the pressing roller 3 will rise and fall with the undulation of the soil as it crushes the soil after rotary tillage. When the pressing roller 3 rises and falls, it rotates around the central axis 51 under the action of the swing arm 52. The elastic force of the spring 55 can give the pressing roller 3 downward pressure, so that the pressing roller 3 crushes the soil clods after rotary tillage and flattens the soil.

[0045] There are two soil pressing rollers 3, which are symmetrically arranged on the left and right sides of the support 1.

[0046] The power transmission system 4 is fixedly mounted on the bracket 1 and includes a rotary tiller 41, a gearbox 42, and a transmission 43.

[0047] The rotary tiller 41 is equipped with a connecting input shaft 411, a rotary tiller output shaft 412 and a connecting output shaft 413. The connecting input shaft 411 is used to connect to the power unit of the tractor.

[0048] The rotary tillage output shaft 412 is connected to the rotary tillage blade assembly 2 and is used to drive the rotary tillage blade assembly 2 to rotate.

[0049] like Figure 4 , Figure 6 and Figure 7 As shown, the rotary tiller box 41 includes a housing 414, a connecting input shaft 411, a rotary tillage output shaft 412, a connecting output shaft 413, and a central rotating shaft 415. A vertically extending mounting plate 416 is provided at the bottom of the housing 414.

[0050] The connecting input shaft 411 is located on the front side of the housing 414 and is rotatably connected to the housing 414. It extends in the front-rear direction, with the front end used to connect to the tractor's power system and the rear end extending into the housing 414. The end is provided with a drive bevel gear 417.

[0051] The output shaft 413 is located on the rear side of the housing 414 and is rotatably connected to the housing 414. It extends in the front-rear direction, with its front end located inside the housing 414 and its end provided with a driven bevel gear 418. Its rear end extends to the rear side of the housing 414 and is used to connect with the gearbox input shaft 421 of the gearbox 42.

[0052] The central rotating shaft 415 is horizontally disposed inside the housing 414, extends in the left and right direction, and is rotatably connected to the side wall of the housing 414 at both ends. A central bevel gear 419 and a central gear 410 are disposed on the central rotating shaft 415.

[0053] The central bevel gear 419 meshes with the driving bevel gear 417 and the driven bevel gear 418 respectively.

[0054] The rotary tillage output shaft 412 is rotatably mounted on the lower end of the mounting plate 416, extends in the left and right direction, and is rotatably connected to the mounting plate 416. The two ends of the rotary tillage output shaft 412 are respectively fixedly connected to the rotary tillage shafts 22 of the two rotary tillage blade sets 2. A rotary tillage gear 4101 is provided on the rotary tillage output shaft 412.

[0055] A connecting gear 4102 is provided on the mounting plate 416. The connecting gear 4102 is rotatably connected to the mounting plate 416. The connecting gear 4102 meshes with the rotary tillage gear 4101 and the center gear 410 respectively.

[0056] like Figure 5 , Figure 8 and Figure 9 As shown, the gearbox 42 is located behind the rotary tiller 41, and the gearbox 42 is equipped with a speed input shaft 421 and a speed output shaft 422.

[0057] The input shaft 421 extends in the front-rear direction, with its front end reaching the front side of the gearbox 42 and connecting to the output shaft 413. Its rear end is located inside the gearbox 42, and a drive bevel gear 423 is provided at the rear end.

[0058] The transmission output shaft 422 extends in the left and right direction, with both ends extending to the left and right sides of the gearbox 42 respectively. A driven bevel gear 424 is provided in the middle of the transmission output shaft 422, and the driven bevel gear 424 meshes with the driving bevel gear 423.

[0059] The transmission device 43 is connected to the speed change output shaft 422 and the soil pressing shaft 31 of the soil pressing roller 3 respectively, and is used to transmit the power output by the speed change output shaft 422 to the soil pressing shaft 31 of the soil pressing roller 3 to drive the soil pressing roller 3 to rotate.

[0060] The axis of the variable speed output shaft 422 is collinear with the axis of the central shaft 51.

[0061] By setting the axis of the transmission output shaft 422 and the axis of the central shaft 51 to be collinear, when the strip tiller performs rotary tillage, the pressing roller 3 will rise and fall with the undulation of the soil as it crushes the soil after rotary tillage. When the pressing roller 3 rises and falls, it rotates around the central shaft 51. At this time, the transmission 43 rotates synchronously along the transmission output shaft 422 as the pressing roller 3 rotates. Since the axis of the transmission output shaft 422 and the axis of the central shaft 51 are collinear, the transmission 43 only needs to rise and fall synchronously with the pressing roller 3 and is not subject to external forces in other directions, such as pressure or tension on the axis. It does not need to extend or twist, thus preventing damage to the transmission 43 and extending its service life.

[0062] The transmission device 43 includes a housing 431 and a driving gear 432, a driven gear 433 and a plurality of transmission gears 434 disposed within the housing 431.

[0063] The two ends of the housing 431 are rotatably connected to the speed output shaft 422 and the soil pressing shaft 31 of the soil pressing roller 3, respectively.

[0064] The drive gear 432 is located at one end inside the housing 431 and is sleeved on the transmission output shaft 422.

[0065] Driven gear 433 is located at the other end inside housing 431 and is sleeved on the soil pressing shaft 31 of soil pressing roller 3.

[0066] The transmission gear 434 is rotatably connected to the housing 431. Multiple transmission gears 434 are arranged sequentially from the driving gear 432 to the driven gear 433 in the housing 431 and mesh with each other. The transmission gear 434 closer to the driving gear 432 meshes with the driving gear 432, and the transmission gear 434 closer to the driven gear 433 meshes with the driven gear 433, thus connecting the driven gear 433 to the driving gear 432.

[0067] There are two transmission devices 43. The two soil pressing rollers 3 are symmetrically arranged on the left and right sides of the support 1. The two transmission devices 43 are located on the left and right sides of the gearbox 42, respectively, connecting the speed output shaft 422 to the soil pressing shaft 31 of the soil pressing roller 3.

[0068] By configuring the transmission 43, which includes a housing 431, a drive gear 432, and transmission gears 434, the two ends of the housing 431 are rotatably connected to the speed output shaft 422 and the rotating shaft 31 of the compaction roller 3, respectively. The drive gear 432 is sleeved on the speed output shaft 422, and the driven gear 433 is sleeved on the compaction shaft 31 of the compaction roller 3. The drive gear 432 is connected to the drive gear 432 through multiple transmission gears 434 set in the housing 431. The housing 431 fixes each gear, so that each gear in the housing can only rotate and cannot move, thereby reducing damage and extending the service life of the transmission 43.

[0069] This invention, by setting the axis of the speed-changing output shaft 422 and the axis of the central shaft 51 to be collinear, allows the soil roller 3 to rise and fall with the undulations of the soil during rotary tillage when the tiller is performing rotary tillage. As the soil roller 3 rises and falls, it rotates around the central shaft 51. At this time, the transmission 43 rotates synchronously along the speed-changing output shaft 422 as the soil roller 3 rotates. Because the axis of the speed-changing output shaft 422 and the axis of the central shaft 51 are collinear, the transmission 43 only needs to rise and fall synchronously with the soil roller 3 and is not subject to external forces in other directions, such as pressure or tension on the axis. It does not need to extend, retract, or twist, thus preventing damage to the transmission 43 and extending its service life.

[0070] It should be noted that the above embodiments are illustrative of the present invention and not intended to limit the present invention.

Claims

1. A strip tiller, characterized in that, It includes a support frame (1), a rotary tiller assembly (2), a soil compaction roller (3), and a power transmission system (4). The front end of the bracket (1) is provided with a connector (11) for connecting with the tractor. The rotary tillage blade assembly (2) is located in the middle of the support (1); The soil pressing roller (3) is mounted on the rear side of the support (1) via a suspension system (5), and the soil pressing roller (3) can rotate up and down along the central axis (51) of the suspension system (5) extending in the left and right directions; The power transmission system (4) is fixedly mounted on the bracket (1) and includes a rotary tiller (41), a gearbox (42) and a transmission (43). The rotary tiller (41) is provided with a connecting input shaft (411), a rotary tillage output shaft (412) and a connecting output shaft (413). The connecting input shaft (411) is used to connect to the power unit of the tractor; The rotary tillage output shaft (412) is connected to the rotary tillage blade assembly (2) and is used to drive the rotary tillage blade assembly (2) to rotate; The gearbox (42) is located behind the rotary tiller (41), and the gearbox (42) is provided with a speed input shaft (421) and a speed output shaft (422). The variable speed input shaft (421) is connected to the connected output shaft (413); The transmission output shaft (422) extends in the left-right direction, is connected to the transmission input shaft (421) in the middle, and extends to the left and right sides of the gearbox (42) at both ends respectively; The transmission device (43) is connected to the variable speed output shaft (422) and the soil pressing shaft (31) of the soil pressing roller (3) respectively, and is used to transmit the power output by the variable speed output shaft (422) to the soil pressing shaft (31) of the soil pressing roller (3) to drive the soil pressing roller (3) to rotate. The axis of the variable speed output shaft (422) and the axis of the central shaft (51) are collinear.

2. The strip tiller according to claim 1, characterized in that, The transmission device (43) includes a housing (431) and a driving gear (432), a driven gear (433) and a plurality of transmission gears (434) disposed in the housing (431). The two ends of the housing (431) are rotatably connected to the variable speed output shaft (422) and the soil pressing shaft (31) of the soil pressing roller (3); The drive gear (432) is located at one end inside the housing (431) and is sleeved on the speed change output shaft (422); The driven gear (433) is located at the other end inside the housing (431) and is sleeved on the soil pressing shaft (31) of the soil pressing roller (3); The transmission gear (434) is rotatably connected to the housing (431); Multiple transmission gears (434) are arranged sequentially from the driving gear (432) to the driven gear (433) in the housing (431) and mesh with each other. The transmission gear (434) closer to the driving gear (432) meshes with the driving gear (432), and the transmission gear (434) closer to the driven gear (433) meshes with the driven gear (433). The driven gear (433) is connected to the driving gear (432).

3. The strip tiller according to claim 2, characterized in that, The transmission input shaft (421) extends in the front-rear direction, with its front end extending to the front side of the gearbox (42), its front end connected to the connecting output shaft (413), and its rear end located inside the gearbox (42), with a drive bevel gear (423) provided at the rear end. A driven bevel gear (424) is provided on the variable speed output shaft (422). The driven bevel gear (424) and the driving bevel gear (423) mesh.

4. The strip tiller according to claim 3, characterized in that, The suspension system (5) includes a central shaft (51), a swing arm (52), a mounting bracket (53), a telescopic rod (54), and a spring (55). The central shaft (51) is mounted on the rear side of the bracket (1) via a mounting base (56); One end of the swing arm (52) is rotatably connected to the central shaft (51), and the other end is rotatably connected to the soil pressing shaft (31) of the soil pressing roller (3); The lower end of the mounting bracket (53) is fixedly installed on the rear side of the bracket (1), and the upper end extends to the middle of the swing arm (52), with a collar (531) provided at the upper end. The lower end of the telescopic rod (54) is connected to the swing arm (52), and the upper end extends through the collar (531) to the top of the collar (531) and can slide up and down along the collar (531); The spring (55) is sleeved on the telescopic rod (54), and its two ends abut against the collar (531) and the swing arm (52) respectively.

5. The strip tiller according to claim 4, characterized in that, The front end of the bracket (1) is provided with a slotted shovel (12).

6. The strip tiller according to claim 5, characterized in that, Two of each of the grooving shovel (12), rotary tiller assembly (2), and compaction roller (3) are provided. The two slotting shovels (12) are symmetrically arranged on the left and right sides of the bracket (1); The two rotary tillage blade sets (2) are symmetrically arranged on the left and right sides of the support (1).

7. The strip tiller according to claim 6, characterized in that, Two soil compaction rollers (3) are provided. Two transmission devices (43) are provided. The two soil-pressing rollers (3) are symmetrically arranged on the left and right sides of the support (1); The two transmissions (43) are located on the left and right sides of the gearbox (42) respectively, connecting the transmission output shaft (422) to the soil pressing shaft (31) of the soil pressing roller (3).

8. The strip tiller according to any one of claims 1 to 7, characterized in that, Support wheels (13) are provided on both the left and right sides of the bracket (1).

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