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, and a connecting piece (11) used for being connected with a tractor is arranged at the front end of the support. The rotary blade group is arranged in the middle of the support, and the soil pressing roller is arranged on the rear side of the support. The power transmission system is fixedly arranged on the support and comprises a rotary tillage box (4) and a gearbox (5), the rotary tillage box comprises a connecting input shaft (41), a rotary tillage output shaft (42) and a connecting output shaft (43), and the connecting input shaft is used for being connected with a power device of a tractor. The rotary tillage output shaft is connected with the rotary tillage cutter set and used for driving the rotary tillage cutter set to rotate, the gearbox comprises a variable speed input shaft (51) and a variable speed output shaft (52), the variable speed input shaft is connected with the connecting output shaft, and the variable speed output shaft is connected with the soil pressing roller and used for driving the soil pressing roller to rotate. The rotating speed of the soil pressing roller can be adjusted according to different types of soil, and the crushing effect of soil blocks is improved.

Description

Technical Field

[0001] The utility model relates to a strip tillage machine for farmland use, in particular to the structure of the strip tillage machine. Background Art

[0002] Cultivated land refers to the soil ploughing and loosening on the land after planting (or fallow) to restore the soil to a granular structure. In agricultural production, a strip tillage machine is commonly used for ploughing operations. A slotting shovel, a rotary tillage knife group and a soil pressing roller are sequentially arranged on the strip tillage machine from front to back. When in use, the strip tillage machine is installed on a tractor, and the rotary tillage knife group and the soil pressing roller are connected to the power mechanism of the tractor. When the tractor pulls the strip tillage machine forward, the soil is turned over by the slotting shovel, the power mechanism of the tractor drives the rotary tillage knife group to rotate to till the soil, and drives the soil pressing roller to rotate to crush and flatten large soil blocks. The strip tillage machine can turn the better soil in the lower layer to the upper layer, turn the upper layer of soil with low fertility to the lower layer, and turn the stubble, weeds and fertilizers into the soil, making the soil loose and conducive to crop growth.

[0003] The soil types of cultivated land in different regions are different, which can be divided into sandy soil, clay soil and loam soil. The composition, viscosity and humidity of different types of soil are different. When the strip tillage machine tills different soils, the size and hardness of the formed soil blocks are different.

[0004] The rotation speed of the soil pressing roller of the existing strip tillage machine is fixed and cannot be adjusted according to the soil type. When crushing and flattening the soil blocks in different types of soil, the effect is not ideal. For example, the soil blocks in loam soil are of moderate size and low hardness, and are easily crushed into fine powder by the soil pressing roller, resulting in poor water permeability and air permeability of the soil, which is not conducive to crop growth; the soil blocks in sandy soil are large and hard, and are difficult to be crushed by the soil pressing roller, resulting in fast water seepage speed and poor water retention performance of the soil, which is also not conducive to crop growth; for clay soil, its adhesiveness and stickiness are strong, and it is easy to adhere to the equipment, increasing the equipment load and resulting in low working efficiency and high labor intensity.

[0005] The purpose of the utility model is to solve the problem that the rotation speed of the soil pressing roller of the existing strip tillage machine cannot be adjusted, resulting in unsatisfactory crushing effect on the soil blocks in different types of soil. Content of the Utility Model

[0006] To solve the above problems, the present utility model provides a strip tillage machine, which includes a bracket 1, a rotary tillage knife group 2, a soil pressing roller 3 and a power transmission system. A connecting member 11 for connecting with a tractor is provided at the front end of the bracket 1. The rotary tillage knife group 2 is arranged in the middle of the bracket 1, and the soil pressing roller 3 is arranged at the rear side of the bracket 1. The power transmission system is fixedly arranged on the bracket 1 and includes a rotary tillage box 4 and a gearbox 5. The rotary tillage box 4 includes a connecting input shaft 41, a rotary tillage output shaft 42 and a connecting output shaft 43. The connecting input shaft 41 is used for connecting with the power device of the tractor. The rotary tillage output shaft 42 is connected with the rotary tillage knife group 2 and is used for driving the rotary tillage knife group 2 to rotate. The gearbox 5 includes a speed change input shaft 51 and a speed change output shaft 52. The speed change input shaft 51 is connected with the connecting output shaft 43, and the speed change output shaft 52 is connected with the soil pressing roller 3 and is used for driving the soil pressing roller 3 to rotate.

[0007] By providing the gearbox 5 in the present utility model, the speed change input shaft 51 of the gearbox 5 is connected with the rotary tillage box 4, and the speed change output shaft 52 of the gearbox 5 is connected with the soil pressing roller 3. When the strip tillage machine performs rotary tillage operations, the rotation speed of the soil pressing roller 3 can be adjusted through the gearbox 5, so as to adjust the rotation speed of the soil pressing roller 3 according to different types of soil, and improve the crushing effect on soil clods in different types of soil. This solves the problem that the soil pressing roller 3 of the existing strip tillage machine has an unsatisfactory crushing effect on soil clods in different types of soil.

[0008] Preferably, the gearbox 5 is a three-speed gearbox. By setting the gearbox 5 as a three-speed gearbox, when the strip tillage machine performs soil pressing operations, the rotation speed of the soil pressing roller 3 can be adjusted to different states according to three different types of soil, and the crushing effect on soil clods in different types of soil can be improved.

[0009] Preferably, the gearbox 5 further includes a box body 53, a speed change shaft 54, a first shifting member 55 and a second shifting member 58. The speed change input shaft 51 is rotatably arranged on the front side wall of the box body 53, extends in the front-rear direction, is fixedly connected with the connecting output shaft 43 at the front end, and extends into the box body 53 at the rear end. The speed change shaft 54 is horizontally arranged in the box body 53, is connected with the speed change input shaft 51, extends in the left-right direction, and is rotatably connected with the box body 53 at both ends. The speed change shaft 54 is provided with a first speed change gear 541, a second speed change gear 542 and a third speed change gear 543.

[0010] The variable-speed output shaft 52 is horizontally arranged in the housing 53, extends in the left-right direction, and is rotatably connected to the housing 53 at both ends. A first output gear 521, a second output gear 522, and a third output gear 523 are slidably arranged on the variable-speed output shaft 52. A first shifting member 55 is arranged on the housing 53 and is connected to the first output gear 521 for driving the first output gear 521 to engage or disengage with the first variable-speed gear 541. A second shifting member 58 is arranged on the housing 53 and is connected to the second output gear 522 and the third output gear 523 for driving the second output gear 522 to engage or disengage with the second variable-speed gear 542, and for driving the third output gear 523 to engage or disengage with the third variable-speed gear 543.

[0011] By arranging a first variable-speed gear 541, a second variable-speed gear 542, and a third variable-speed gear 543 on the variable-speed shaft 54 of the transmission 5, and arranging a first output gear 521, a second output gear 522, and a third output gear 523 on the variable-speed output shaft 52, and controlling the engagement of the first output gear 521 with the first variable-speed gear 541, the engagement of the second output gear 522 with the second variable-speed gear 542, or the engagement of the third output gear 523 with the third variable-speed gear 543 through the first shifting member 55 and the second shifting member 58, the transmission 5 can achieve variable speed with three gears.

[0012] Preferably, the transmission 5 further includes a steering shaft 59. A variable-speed input bevel gear 511 is arranged at the rear end of the variable-speed input shaft 51. The steering shaft 59 is arranged in the housing 53, extends in the left-right direction, and is rotatably connected to the side walls of the housing 53 at both ends. A steering bevel gear 591 and a steering output gear 592 are arranged on the steering shaft 59. The steering bevel gear 591 meshes with the variable-speed input bevel gear 511, and a driven gear 544 meshing with the steering output gear 592 is arranged on the variable-speed shaft 54.

[0013] Preferably, the first shifting member 55 includes a shifting shaft 551, a shifting lever 552, a shifting piece 553, and a sliding cylinder 554. A sliding rod 50 is arranged in the box body 53. The sliding rod 50 is horizontally arranged above the transmission output shaft 52 and is parallel to the transmission output shaft 52. The two ends are respectively fixedly connected to the side walls of the box body 53. The shifting shaft 551 is vertically arranged on the top surface of the box body 53 and is rotatably connected to the box body 53. The upper end is located above the box body 53, and the lower end extends into the box body 53. The shifting lever 552 is fixedly arranged at the upper end of the shifting shaft 551. The shifting piece 553 is horizontally arranged at the lower end of the shifting shaft 551. One end is fixedly connected to the lower end of the shifting shaft 551, and the other end extends above the sliding rod 50. A shifting chute 555 is arranged on the shifting piece 553. The sliding cylinder 554 is slidably arranged on the sliding rod 50. A vertically arranged shifting rod 556 is arranged at the top, and a connecting ring 557 is arranged at the bottom. The shifting rod 556 can be slidably inserted into the shifting chute 555, and the connecting ring 557 is connected to the first output gear 521. The structure of the second shifting member 58 is the same as that of the first shifting member 55. The connecting ring of the second shifting member 58 is connected to the second transmission gear 542 and the third transmission gear 543.

[0014] When shifting gears through the first shifting member 55, the shifting lever 552 is toggled to one side. The shifting piece is driven to rotate to the other side through the shifting shaft 551. The sliding cylinder 554 is pushed to slide through the shifting piece, so that the first output gear 521 and the second transmission gear 541 are engaged. When shifting to neutral, the lever 552 is toggled in the reverse direction to the initial position, driving the first output gear 521 to disengage from the first transmission gear 541 and sliding to the initial position. The operation method of the second shifting member 58 when shifting gears is the same as that of the first shifting member 55, and will not be elaborated here.

[0015] Preferably, the first shifting member 55 further includes a fixing screw 56 and a fixing plate 57. The shifting lever 552 is horizontally arranged. One end is fixedly connected to the upper end of the shifting shaft 551, and the other end is provided with a threaded hole extending vertically corresponding to the fixing screw 56. The fixing screw 56 is inserted into the threaded hole. A locking nut 561 is arranged on the fixing screw 56. The fixing plate 57 is fixedly arranged on the top of the box body 53. A fixing hole 571 corresponding to the fixing screw 56 is arranged on the fixing plate 57.

[0016] By providing the fixing screw 56 and the fixing plate 57, after the transmission 5 is shifted into gear, the lower end of the screw can be inserted into the fixing hole 571 on the fixing plate 57 to fix the lever, preventing gear disengagement due to vibration during the operation of the strip tillage machine.

[0017] Preferably, a slotting shovel 12 is arranged at the front end of the bracket 1. The soil can be turned over through the slotting shovel 12, turning the better soil in the lower layer to the upper layer, turning the upper layer of soil with low fertility to the lower layer, and turning the stubble, weeds, fertilizers, etc. into the soil, facilitating the subsequent rotary tiller group 2 to carry out rotary tillage.

[0018] Preferably, the diameters of the first speed-changing gear 541, the second speed-changing gear 542, and the third speed-changing gear 543 increase in sequence, and the diameters of the first output gear 521, the second output gear 522, and the third output gear 523 decrease in sequence.

[0019] Preferably, there are two slotting shovels 12, rotary tiller blade groups 2, and soil pressing rollers 3. The two slotting shovels 12 are symmetrically arranged on the left and right sides of the bracket 1, the two rotary tiller blade groups 2 are symmetrically arranged on the left and right sides of the bracket 1, and the two soil pressing rollers 3 are symmetrically arranged on the left and right sides of the bracket 1. Symmetrically arranging two slotting shovels 12, rotary tiller blade groups 2, and soil pressing rollers 3 on the left and right sides of the bracket 1 respectively can keep the force balanced when the strip tillage machine performs rotary tillage operations and can also improve the operation efficiency.

[0020] Preferably, support wheels 13 are arranged on both the left and right sides of the bracket 1. When the strip tillage machine is operating, the support wheels 13 can support the bracket 1 to keep a certain height from the ground, so that the depth of soil turning by the slotting shovel 12 and the depth of rotary tillage of the soil by the rotary tiller blade group 2 are appropriate, and the force for the soil pressing roller 3 to crush the soil quickly remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 . Schematic diagram of the overall structure of the strip tillage machine;

[0022] Figure 2 . Top view structure schematic diagram of the strip tillage machine;

[0023] Figure 3 . Schematic diagram of the structure of the strip tillage machine from another angle;

[0024] Figure 4 . Side view structure schematic diagram of the strip tillage machine;

[0025] Figure 5 . Schematic diagram of the structure of the power transmission system;

[0026] Figure 6 . Schematic diagram of the structure of the power transmission system from another angle;

[0027] Figure 7 . Schematic diagram of the bottom structure of the power transmission system;

[0028] Figure 8 . Schematic diagram of the external structure of the gearbox;

[0029] Figure 9 . Schematic diagram of the front side of the gearbox;

[0030] Figure 10 . Schematic diagram of the partial cross-section of the gearbox;

[0031] Figure 11 . Schematic diagram of the internal structure of the gearbox;

[0032] Figure 12 .Another perspective schematic diagram of the internal structure of the transmission;

[0033] Figure 13 .Schematic diagram of the internal structure of the transmission in neutral gear;

[0034] Figure 14 .Schematic diagram of the internal structure of the transmission in first gear;

[0035] Figure 15 .Schematic diagram of the internal structure of the transmission in second gear;

[0036] Figure 16 .Schematic diagram of the internal structure of the transmission in third gear.

[0037] In the figure, 1. Bracket, 11. Connecting piece, 12. Grooving shovel, 13. Supporting wheel, 14. Land leveling roller, 15. Suspension system, 2. Rotary tiller blade group, 21. Rotary tiller shaft, 22. Rotary tiller blade, 3. Soil pressing roller, 31. Rotating shaft, 32. Roller, 4. Rotary tiller box, 41. Connecting input shaft, 411. Driving bevel gear, 42. Rotary tiller output shaft, 421. Rotary tiller gear, 43. Connecting output shaft, 431. Driven bevel gear, 44. Housing, 45. Central rotating shaft, 451. Central bevel gear, 452. Central gear, 46. Mounting plate, 461. Connecting gear, 5. Transmission, 51. Transmission input shaft, 511. Transmission input bevel gear, 52. Transmission output shaft, 521. First output gear, 522. Second output gear, 523. Third output gear, 53. Box body, 54. Transmission shaft, 541. First transmission gear, 542. Second transmission gear, 543. Third transmission gear, 544. Driven gear, 55. First shifting part, 551. Shifting shaft, 552. Shift lever, 553. Shifting piece, 554. Slide cylinder, 555. Shifting chute, 556. Shifting rod, 557. Connecting ring, 56. Fixed screw, 561. Locking nut, 57. Fixed plate, 571. Fixed hole, 58. Second shifting part, 59. Steering shaft, 591. Steering bevel gear, 592. Steering output gear, 50. Slide bar, 6. Reverser, 61. Outer shell, 62. Reversing input shaft, 621. Reversing input bevel gear, 63. Reversing output shaft, 631. Reversing output bevel gear, 7. Universal joint transmission device. Specific embodiments

[0038] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, the strip tillage machine includes a bracket 1, a rotary tillage blade group 2, a soil pressing roller 3 and a power transmission system. A connecting piece 11, a land leveling roller 14 and two slotting shovels 12 are arranged at the front end of the bracket 1, and supporting wheels 13 are arranged on both the left and right sides of the bracket 1.

[0040] The connecting piece 11 is detachably connected to the tractor through bolts and is used to fix the bracket 1 on the tractor.

[0041] The slotting shovels 12 are fixedly arranged below the bracket 1, and the two slotting shovels 12 are symmetrically arranged on both the left and right sides of the bracket 1. Through the slotting shovels 12, the soil can be turned over, the better soil in the lower layer can be turned to the upper layer, the upper layer of soil with low fertility can be turned to the lower layer, and the stubble, weeds and fertilizers can be turned and buried in the soil, facilitating the subsequent rotary tillage by the rotary tillage blade group 2.

[0042] The land leveling roller 14 is rotatably arranged below the middle of the front end of the bracket 1, at a position slightly behind the middle of the two slotting shovels 12. The land leveling roller 14 can rotate freely along the axis arranged in the left-right direction and is used to initially flatten the soil plowed out by the two slotting shovels 12 towards the middle, facilitating the subsequent rotary tillage by the rotary tillage blade group 2.

[0043] The rotary tillage blade group 2 is arranged in the middle of the bracket 1, behind the slotting shovels 12. The rotary tillage blade group 2 includes a rotary tillage shaft 21 and a plurality of rotary tillage blades 22 arranged on the rotary tillage shaft 21. The rotary tillage shaft 21 is rotatably arranged on the bracket 1 and extends in the left-right direction. When the rotary tillage shaft 21 rotates, it drives the rotary tillage blades 22 to rotate, performing rotary tillage on the soil plowed out by the slotting shovels 12, breaking up and mixing the large soil blocks.

[0044] There are two rotary tillage blade groups 2, and the two rotary tillage blade groups 2 are symmetrically arranged on both the left and right sides of the bracket 1.

[0045] The soil pressing roller 3 is arranged below the rear end of the bracket 1 through a suspension system 15, behind the rotary tillage blade group 2. The soil pressing roller 3 includes a rotating shaft 31 and rollers 32 arranged on the rolling shaft. Both ends of the rotating shaft 31 are rotatably connected to the suspension system 15.

[0046] The suspension system 15 is a prior art, and the structure of the suspension system 15 will not be described in detail here. Through the suspension system 15, the soil pressing roller 3 can be lifted and lowered according to the ground height, enabling the soil pressing roller 3 to apply a relatively uniform pressure to the soil, crushing the larger soil blocks in the soil, and preventing the soil in the raised areas from being compacted and the soil blocks in the sunken areas from not being crushed when the ground is uneven, which affects the growth of crops.

[0047] There are two soil pressing rollers 3, and the two soil pressing rollers 3 are symmetrically arranged on both the left and right sides of the bracket 1.

[0048] Such as Figure 5 、 Figure 6 and Figure 7As shown, the power transmission system is fixedly arranged on the bracket 1 and includes a rotary tillage box 4 and a gearbox 5.

[0049] The rotary tillage box 4 includes a housing 44, a connecting input shaft 41, a rotary tillage output shaft 42, a connecting output shaft 43 and a central rotating shaft 45. A vertically extending mounting plate 46 is arranged at the bottom of the housing 44.

[0050] The connecting input shaft 41 is arranged on the front side surface of the housing 44, is rotatably connected to the housing 44, extends in the front-rear direction, the front end is used for connecting with the power system of the tractor, the rear end extends into the housing 44, and an active bevel gear 411 is arranged at the end.

[0051] The connecting output shaft 43 is arranged on the rear side surface of the housing 44, is rotatably connected to the housing 44, extends in the front-rear direction, the front end is located inside the housing 44, and a driven bevel gear 431 is arranged at the end. The rear end extends to the rear side of the housing 44 and is used for connecting with the speed-changing input shaft 51 of the gearbox 5.

[0052] The central rotating shaft 45 is horizontally arranged inside the housing 44, extends in the left-right direction, and both ends are rotatably connected to the side walls of the housing 44. A central bevel gear 451 and a central gear 452 are arranged on the central rotating shaft 45.

[0053] The central bevel gear 451 meshes with the active bevel gear 411 and the driven bevel gear 431 respectively.

[0054] The rotary tillage output shaft 42 is rotatably arranged at the lower end of the mounting plate 46, extends in the left-right direction, is rotatably connected to the mounting plate 46, and both ends of the rotary tillage output shaft 42 are fixedly connected to the rotary tillage shafts 21 of the two rotary tillage cutter groups 2 respectively. A rotary tillage gear 421 is arranged on the rotary tillage output shaft 42.

[0055] A connecting gear 461 is arranged on the mounting plate 46. The connecting gear 461 is rotatably connected to the mounting plate 46 and meshes with the rotary tillage gear 421 and the central gear 452 respectively.

[0056] As Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 shown, the gearbox 5 is a three-speed gearbox. The gearbox 5 includes a speed-changing input shaft 51, a steering shaft 59, a speed-changing output shaft 52, a box body 53, a speed-changing shaft 54, a sliding rod 50, a first shifting member 55 and a second shifting member 58.

[0057] The speed-changing input shaft 51 is rotatably arranged on the front side wall of the box body 53, extends in the front-rear direction, the front end is fixedly connected to the connecting output shaft 43, the rear end extends into the box body 53, and a speed-changing input bevel gear 511 is arranged at the end.

[0058] The steering shaft 59 is arranged inside the box body 53, extends in the left-right direction, and is rotatably connected to the side walls of the box body 53 at both ends. A steering bevel gear 591 and a steering output gear 592 are arranged on the steering shaft 59, and the steering bevel gear 591 meshes with the transmission input bevel gear 511.

[0059] The transmission shaft 54 is horizontally arranged inside the box body 53, is connected to the transmission input shaft 51, extends in the left-right direction, and is rotatably connected to the box body 53 at both ends. A driven gear 544, a first transmission gear 541, a third transmission gear 543, and a second transmission gear 542 are arranged on the transmission shaft 54 in sequence from left to right. The diameters of the first transmission gear 541, the second transmission gear 542, and the third transmission gear 543 increase in sequence.

[0060] The driven gear 544 meshes with the steering output gear 592.

[0061] The transmission output shaft 52 is horizontally arranged inside the box body 53, extends in the left-right direction, and is rotatably connected to the box body 53 at both ends. A first output gear 521, a third output gear 523, and a second output gear 522 are slidably arranged on the transmission output shaft 52 in sequence from left to right, and the second output gear 522 and the third output gear 523 are fixedly connected. The diameters of the first output gear 521, the second output gear 522, and the third output gear 523 decrease in sequence.

[0062] Both ends of the transmission output shaft 52 respectively extend to the outside of the box body 53, and each end is connected to the rotating shaft 31 of the soil pressing roller 3 through a commutator 6 and a universal joint transmission device 7 to drive the soil pressing roller 3 to rotate.

[0063] The sliding rod 50 is horizontally arranged above the transmission output shaft 52, is parallel to the transmission output shaft 52, and is fixedly connected to the side walls of the box body 53 at both ends.

[0064] The first shifting member 55 is arranged on the box body 53 and is connected to the first output gear 521 for driving the first output gear 521 to mesh with or disengage from the first transmission gear 541.

[0065] The first shifting member 55 includes a shifting shaft 551, a shifting lever 552, a shifting piece 553, a sliding cylinder 554, a fixing screw 56, and a fixing plate 57. The shifting shaft 551 is vertically arranged on the top surface of the box body 53, is rotatably connected to the box body 53, the upper end is located above the box body 53, and the lower end extends into the box body 53.

[0066] The shifting lever 552 is fixedly arranged at the upper end of the shifting shaft 551, is horizontally arranged, one end is fixedly connected to the upper end of the shifting shaft 551, and the other end is provided with a threaded hole extending vertically corresponding to the fixing screw 56.

[0067] The shift piece 553 is horizontally arranged at the lower end of the shift shaft 551, with one end fixedly connected to the lower end of the shift shaft 551 and the other end extending above the slide bar 50. A shift chute 555 is arranged on the shift piece 553. The shift chute 555 is strip-shaped, and the extending direction of the shift chute 555 is the same as the length direction of the shift piece 553.

[0068] The sliding cylinder 554 is slidably arranged on the slide bar 50, with a vertically arranged shift lever 556 at the top and a connecting ring 557 at the bottom. The shift lever 556 can be slidably inserted into the shift chute 555, and the shift lever 556 can slide along the extending direction of the shift chute 555.

[0069] The connecting ring 557 of the first shift member 55 is connected to the first output gear 521.

[0070] The fixing screw 56 is inserted into the threaded hole, and a locking nut 561 is arranged on the fixing screw 56. The fixing screw 56 can be locked by the locking nut 561 to prevent the fixing screw 56 from rotating due to vibration during the operation of the strip tiller.

[0071] The fixing plate 57 is fixedly arranged on the top of the box body 53. Fixing holes 571 corresponding to the fixing screw 56 are arranged on the fixing plate 57. There are three fixing holes 571 on the fixing plate 57, and the three fixing holes 571 respectively correspond to three positions of the fixing screw 56.

[0072] The second shift member 58 is arranged on the box body 53. The structure of the second shift member 58 is the same as that of the first shift member 55. The connecting ring of the second shift member 58 is connected to the second transmission gear 542 and the third transmission gear 543, and is used to drive the second output gear 522 to mesh or disengage with the second transmission gear 542, and to drive the third output gear 523 to mesh or disengage with the third transmission gear 543.

[0073] When the second shift member 58 drives the second output gear 522 to mesh with the second transmission gear 542, drives the third output gear 523 to mesh with the third transmission gear 543, and drives neither the second output gear 522 to mesh with the second transmission gear 542 nor the third output gear 523 to mesh with the third transmission gear 543, the fixing screws on the second shift member 58 are respectively in three different positions.

[0074] As Figure 6 and Figure 12 shown, the commutator 6 includes a housing 61, a commutation input shaft 62 and a commutation output shaft 63. The commutation input shaft 62 is horizontally arranged inside the housing 61, extends in the left-right direction, and is rotatably connected to the housing 61 at both ends. One end passes through the housing 61 and is fixedly connected to the variable-speed output shaft 52 of the gearbox 5. A commutation input bevel gear 621 is arranged on the commutation input shaft 62.

[0075] The reversing output shaft 63 is arranged at the bottom of the housing 61, perpendicular to the reversing input shaft 62. One end is located outside the housing 61 and is fixedly connected to the universal joint transmission device 7. The other end extends into the housing 61, and a reversing output bevel gear 631 is arranged at the end. The reversing output bevel gear 631 meshes with the reversing input bevel gear 621.

[0076] Both ends of the universal joint transmission device 7 are fixedly connected to the reversing output shaft 63 and the rotating shaft 31 of the soil pressing roller 3 respectively.

[0077] The universal joint transmission device 7 is composed of a universal joint and a transmission shaft. As an existing technology, it is a commonly used device in the automotive power transmission system and will not be elaborated here. Through the universal joint transmission device 7, the soil pressing roller 3 can move.

[0078] Gear shifting process of the gearbox 5: As Figure 13 shown, initially the transmission is in the neutral state. When shifting to the first gear, move the lever 552 of the first shifting member 55 to the left, drive the shifting piece 553 to rotate to the right, and push the sliding cylinder 554 of the first shifting member 55 to slide to the right until the first output gear 521 and the first transmission gear 541 are engaged (refer to Figure 14 ). Turn the fixing screw 56 on the first shifting member 55 to make the fixing screw 56 insert into the corresponding fixing hole 571 to fix the shifting lever 552. At this time, the speed change efficiency of the gearbox 5 is relatively low, and the rotation speed of the soil pressing roller 3 is relatively slow.

[0079] When shifting to the neutral gear, turn the fixing screw 56 in the reverse direction to pull the fixing screw 56 out of the fixing hole 571, move the lever 552 in the reverse direction to the initial position, and drive the first output gear 521 to disengage from the first transmission gear 541 and slide to the initial position (refer to Figure 13 ).

[0080] As Figure 2 shown, when shifting to the second gear, move the lever of the second shifting member 58 to the left, drive the shifting piece of the second shifting member 58 to rotate to the right, and push the sliding cylinder of the second shifting member 58 to slide to the right until the second output gear 522 and the second transmission gear 542 are engaged (refer to Figure 15 ). Turn the fixing screw on the second shifting member 58 to make it insert into the corresponding fixing hole 571. The method of shifting to the neutral gear is opposite to the operation direction of shifting to the second gear and will not be elaborated here.

[0081] At this time, the speed change efficiency of the gearbox 5 is medium speed, and the rotation speed of the soil pressing roller 3 is medium speed.

[0082] As Figure 3As shown, when shifting to the third gear, move the lever of the second shifting member 58 to the right, driving the shifting piece of the second shifting member 58 to rotate to the left, pushing the sliding cylinder of the second shifting member 58 to slide to the left until the third output gear 523 meshes with the third transmission gear 543 (refer to Figure 16 ). Turn the fixing screw on the second shifting member 58 and insert it into the fixing hole at the corresponding position. The method of shifting to neutral is opposite to the operation direction of shifting to the third gear, which will not be elaborated here.

[0083] At this time, the transmission efficiency of the transmission 5 is high speed, and the rotation speed of the soil pressing roller 3 is high speed.

[0084] The utility model solves the problem that the crushing effect of the soil pressing roller 3 of the existing strip tillage machine on soil clods in different types of soil is not ideal by setting the transmission 5, connecting the transmission input shaft 51 of the transmission 5 with the rotary tillage box 4, and connecting the transmission output shaft 52 of the transmission 5 with the soil pressing roller 3. During the rotary tillage operation of the strip tillage machine, the rotation speed of the soil pressing roller 3 can be adjusted through the transmission 5, so as to adjust the rotation speed of the soil pressing roller 3 according to different types of soil and improve the crushing effect on soil clods in different types of soil.

[0085] By setting the first transmission gear 541, the second transmission gear 542 and the third transmission gear 543 on the transmission shaft 54 of the transmission 5, and setting the first output gear 521, the second output gear 522 and the third output gear 523 on the transmission output shaft 52, and controlling the meshing of the first output gear 521 with the first transmission gear 541, the second output gear 522 with the second transmission gear 542 or the third output gear 523 with the third transmission gear 543 through the first shifting member 55 and the second shifting member 58, the transmission 5 can achieve three-speed transmission. Setting the transmission 5 as a three-speed transmission, during the soil pressing operation of the strip tillage machine, the rotation speed of the soil pressing roller 3 can be adjusted in three different rotation speed states according to three different types of soil, improving the crushing effect on soil clods in different types of soil.

[0086] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A strip tiller, characterized in that: It comprises a support (1), a rotary tillage blade group (2), a soil pressing roller (3) and a power transmission system. The front end of the bracket (1) is provided with a connecting piece (11) for connecting to a tractor; The rotary tillage blade group (2) is arranged in the middle of the bracket (1); The soil pressing roller (3) is arranged on the rear side of the bracket (1); The power transmission system is fixedly mounted on the support (1), and comprises a rotary tillage box (4) and a gearbox (5). The rotary tillage box (4) comprises a connecting input shaft (41), a rotary tillage output shaft (42) and a connecting output shaft (43). The connecting input shaft (41) is used to connect to the power device of the tractor; The rotary tillage output shaft (42) is connected to the rotary tillage blade group (2) and is used to drive the rotary tillage blade group (2) to rotate; The gearbox (5) comprises a speed change input shaft (51) and a speed change output shaft (52). The speed change input shaft (51) is connected to the connecting output shaft (43); The speed-changing output shaft (52) is connected to the soil-pressing roller (3) and is used to drive the soil-pressing roller (3) to rotate.

2. The strip tiller according to claim 1, characterized in that: The gearbox (5) is a three-speed gearbox.

3. The strip tiller according to claim 2, characterized in that: The gearbox (5) comprises a housing (53), a speed change shaft (54), a first shifting member (55) and a second shifting member (58). The speed change input shaft (51) is rotatably disposed on the front side wall of the housing (53), extending in the front-to-back direction, with the front end fixedly connected to the connecting output shaft (43) and the rear end extending into the housing (53); The speed change shaft (54) is horizontally arranged in the housing (53), connected to the speed change input shaft (51), extending in the left-right direction, and rotatably connected to the housing (53) at both ends. The speed change shaft (54) is provided with a first speed change gear (541), a second speed change gear (542), and a third speed change gear (543); The speed change output shaft (52) is horizontally arranged in the box body (53), extending in the left-right direction, and its two ends are rotatably connected to the box body (53). A first output gear (521), a second output gear (522) and a third output gear (523) are slidably arranged on the speed change output shaft (52); The first shifting member (55) is disposed on the housing (53), connected to the first output gear (521), and used to drive the first output gear (521) to engage with or disengage from the first speed change gear (541); The second shifting member (58) is arranged on the housing (53), connected to the second output gear (522) and the third output gear (523), and is used for driving the second output gear (522) to engage with or disengage from the second speed gear (542), and for driving the third output gear (523) to engage with or disengage from the third speed gear (543).

4. The strip tiller according to claim 3, characterized in that: The gearbox (5) further comprises a steering shaft (59), A speed change input bevel gear (511) is provided at the rear end of the speed change input shaft (51); The steering shaft (59) is disposed in the box body (53), extending in the left-right direction, with both ends rotatably connected to the side walls of the box body (53), and a steering bevel gear (591) and a steering output gear (592) are disposed on the steering shaft (59); The steering bevel gear (591) is meshed with the speed change input bevel gear (511); The speed change shaft (54) is provided with a driven gear (544) meshing with the steering output gear (592).

5. The strip tiller according to claim 4, characterized in that: The first shifting member (55) comprises a shifting shaft (551), a shifting rod (552), a shifting plate (553) and a sliding cylinder (554). A slide bar (50) is arranged in the box body (53), the slide bar (50) is arranged horizontally above the speed change output shaft (52), is parallel to the speed change output shaft (52), and has two ends respectively fixedly connected to the side walls of the box body (53); The shift shaft (551) is vertically arranged on the top surface of the box body (53), rotatably connected to the box body (53), with the upper end located above the box body (53) and the lower end extending into the box body (53); The shift rod (552) is fixedly arranged on the upper end of the shift shaft (551); The shift plate (553) is horizontally arranged at the lower end of the shift shaft (551), one end of which is fixedly connected to the lower end of the shift shaft (551), and the other end of which extends above the slide rod (50), and a shift slide groove (555) is arranged on the shift plate (553); The slide cylinder (554) is slidably disposed on the slide rod (50), a vertically disposed shift rod (556) is disposed on the top, and a connecting ring (557) is disposed on the bottom; The shift rod (556) can be slidably inserted into the shift slot (555); The connecting ring (557) is connected to the first output gear (521); The structure of the second shifting member (58) is the same as that of the first shifting member (55), and the connecting ring of the second shifting member (58) is connected to the second speed gear (542) and the third speed gear (543).

6. The strip tiller according to claim 5, characterized in that: The first shifting member (55) further comprises a fixing screw (56) and a fixing plate (57). The shifting rod (552) is arranged horizontally, one end of which is fixedly connected to the upper end of the shifting shaft (551), and the other end of which is provided with a vertically extending threaded hole corresponding to the fixing screw rod (56); The fixing screw (56) is inserted into the threaded hole, and a locking nut (561) is provided on the fixing screw (56); The fixing plate (57) is fixedly arranged on the top of the box body (53), and a fixing hole (571) corresponding to the fixing screw rod (56) is arranged on the fixing plate (57).

7. The strip tiller according to claim 6, characterized in that: A slotting shovel (12) is provided at the front end of the bracket (1).

8. The strip tiller according to claim 7, characterized in that: The diameters of the first speed gear (541), the second speed gear (542) and the third speed gear (543) increase sequentially; The diameters of the first output gear (521), the second output gear (522) and the third output gear (523) decrease in sequence.

9. The strip tiller according to claim 8, characterized in that: The slotting shovel (12), the rotary tillage blade group (2) and the soil pressing roller (3) are each provided with two. The two slotting shovels (12) are symmetrically arranged on the left and right sides of the bracket (1); The two rotary tillage blade groups (2) are symmetrically arranged on the left and right sides of the bracket (1); The two soil compacting rollers (3) are symmetrically arranged on the left and right sides of the bracket (1).

10. The strip tiller according to claim 9, characterized in that: Support wheels (13) are provided on both the left and right sides of the bracket (1).

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