A type of tillage, weeding, and stubble removal machine

Abstract

This utility model discloses a tillage, weeding, and stubble-removing machine, belonging to the field of tillage machinery technology. It includes a frame and a body. A reversing gearbox is suspended below the main beam of the frame, connecting five sets of two-stage transmission units via a drive shaft. Each transmission unit includes a primary double-row chain drive box and a secondary single-row chain drive box connected by an external hexagonal central drive shaft. The top of the primary drive box is connected to a contour adjuster via a trapezoidal extension arm, allowing dynamic adjustment of the angle between the two drive boxes to 100°-110°. The secondary single-row chain drive box is connected to a rotary tillage and stubble-removing mechanism via an external hexagonal output shaft, with a soil-crushing wheel behind it. A depth-limiting wheel assembly is connected to the lower front of the secondary single-row chain drive box, and the tillage depth is controlled by an adjusting disc. This utility model achieves a main beam ground clearance exceeding 1000mm, adapting to tillage, weeding, and stubble removal in wheat-corn intercropping patterns. The contour mechanism ensures terrain adaptability, and the rapid blade switching achieves dual functionality, effectively avoiding seedling damage and improving operational efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tillage machinery technology, and in particular to a tillage, weeding and stubble removal machine. Background Technology

[0002] In agricultural production, wheat-corn intercropping is an important planting method for improving land utilization and grain yield. Intertillage, weeding, and stubble removal machines are specialized tillage machinery designed for wheat-corn intercropping, capable of improving automation, production efficiency, and grain yield in this model. However, technical challenges remain in intertillage, weeding, and stubble removal after wheat harvest. Existing agricultural machinery, due to structural design limitations, struggles to adapt to the complex field environment of wheat-corn intercropping: during the intertillage and weeding stage before wheat harvest and corn planting, traditional machinery easily damages the wheat due to insufficient ground clearance; after wheat harvest, the presence and height limitations of corn seedlings prevent the complete removal of wheat stubble, resulting in low operational efficiency and insufficient automation, thus hindering further increases in grain yield. Therefore, there is an urgent need for intertillage, weeding, and stubble removal equipment suitable for wheat-corn intercropping. Utility Model Content

[0003] The purpose of this invention is to provide a mid-season tillage, weeding, and stubble removal machine to solve the problem that existing agricultural machinery cannot complete mid-season tillage and weeding work and stubble removal after wheat harvesting in wheat-corn intercropping mode, so as to improve the level of automation, production efficiency, and grain yield.

[0004] To achieve the above objectives, this utility model provides a tillage, weeding, and stubble-removing machine, including a frame connected to a walking device and a body connected to the frame. The frame includes a main beam, and the body includes a reversing gearbox suspended below the main beam and a transmission mechanism connected to the reversing gearbox via a drive shaft. The transmission mechanism consists of five sets of two-stage transmission units. Each set of two-stage transmission units includes a primary transmission chain box and a secondary transmission chain box connected to the hexagonal intermediate drive shaft below the primary transmission chain box. A trapezoidal extension arm is provided at the top of the primary transmission chain box, connected to a contour adjuster. The secondary transmission chain box is connected to a rotary tillage and stubble-removing mechanism via an hexagonal output shaft, and the lower end of the contour adjuster is connected to the rotary tillage and stubble-removing mechanism.

[0005] Preferably, the five sets of two-stage transmission units are located on both sides and the rear of the reversing gearbox, and the transmission shaft passes through the hollow hexagonal shaft above the first-stage transmission chain box and is connected to the reversing gearbox. The first-stage transmission chain box has a built-in double-row sprocket and a double-row chain; the second-stage transmission chain box has a built-in single-row sprocket and a single-row chain.

[0006] Preferably, the contour adjuster includes a support base, a screw connecting rod, and an adjusting screw connected in sequence. A spring is sleeved on the screw connecting rod, and the spring adjusts the included angle between the primary transmission chain box and the secondary transmission chain box to 100°-110°.

[0007] Preferably, the rotary tillage and stubble-removing mechanism is connected to the secondary transmission chain box via an adjustable dust cover mounting plate. The top of the adjustable dust cover mounting plate is connected to the contour adjuster via a pin, and adjustable dust covers are fixedly connected to both sides of the adjustable dust cover mounting plate via bolts.

[0008] Preferably, a hanging plate extends from the rear of the adjustable dust cover mounting plate, the hanging plate is connected to a soil crushing wheel mounting frame, and a soil crushing wheel is mounted on the soil crushing wheel mounting frame.

[0009] Preferably, the rotary tillage and stubble-removing mechanism is a rotary tillage blade set or a stubble-removing blade set, wherein the rotary tillage width of the rotary tillage blade set is 380mm, and the stubble-removing width of the stubble-removing blade set is 580mm.

[0010] Preferably, the rotary tiller assembly includes a rotary tiller disc and rotary tiller blades mounted on the rotary tiller disc; the stubble removal assembly includes a stubble removal disc and stubble removal blades mounted on the stubble removal disc.

[0011] Preferably, when the rotary tillage and stubble-removing mechanism is a rotary tillage blade assembly, two soil-crushing wheels are provided; or when the rotary tillage and stubble-removing mechanism is a stubble-crushing blade assembly, three soil-crushing wheels are provided.

[0012] Preferably, a connecting plate extends from the front of the bottom end of the secondary transmission chain box to connect to the limited depth wheel assembly, and the bottom end of the secondary transmission chain box forms an angle of 20°-30° with the ground.

[0013] Preferably, the depth limiting wheel assembly includes a depth limiting wheel mounting arm, a depth limiting wheel fixing seat, a depth limiting wheel support arm, and a depth limiting wheel body connected in sequence to the depth limiting wheel support arm. The top of the depth limiting wheel fixing seat is connected to a depth limiting wheel adjusting disc via an adjusting screw, and a depth limiting wheel adjusting nut is also provided on the side wall of the depth limiting wheel fixing seat.

[0014] Therefore, the present invention, employing the above-mentioned tillage, weeding, and stubble-removing machine, has the following beneficial effects:

[0015] 1. This invention achieves a beam height of over 1000mm above the ground through a two-stage transmission mechanism, which can adapt to the inter-row cultivation and weeding of wheat and corn, allowing the machine to loosen the soil and remove weeds while avoiding damage to the wheat and increasing wheat yield.

[0016] 2. This invention establishes a contour-following mechanism for rotary tillers and stubble destroyers. The contour-following mechanism consists of a transmission chain box, a secondary transmission chain box, a contour-following adjuster, and three other devices. This mechanism ensures that the rotary tiller and stubble destroyer can adjust to the terrain while rotary tilling, weeding, and stubble destroying, thus ensuring consistent tillage depth.

[0017] 3. This invention adjusts the width of tillage and weeding, as well as the stubble removal width, by changing the rotary tillage mechanism and the cutter head. The adjustable width is 380-580mm. During use, the rotary tillage width and stubble removal width can be adjusted according to tillage requirements, which helps improve the machine's adaptability, optimize power output, and reduce operating costs.

[0018] 4. This invention, through the quick replacement of the rotary tillage blade set and the stubble removal blade set, can adapt to the functions of rotary tillage, loosening soil, weeding, and stubble removal, achieving multiple uses in one machine, reducing agricultural machinery investment, and improving tillage efficiency.

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure in the rotary tillage and weeding state according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the stubble-killing state in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembly front view of an embodiment of the present invention;

[0023] Figure 4 This is a top view diagram of the assembled structure according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the assembly cross-sectional structure according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the rotary tiller blade assembly structure according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the stubble-removing knife assembly structure according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the depth-limiting wheel structure according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the rotary tillage and soil-breaking wheel assembly structure according to an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the stubble-crushing and soil-breaking wheel assembly structure according to an embodiment of the present invention;

[0030] Figure 11This is a schematic diagram of the contour adjuster structure according to an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the primary drive chain box assembly structure according to an embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of the two-stage transmission chain box assembly according to an embodiment of the present invention;

[0033] Figure Labels

[0034] 1. Hanging beam; 2. Hanging frame; 3. Suspension frame; 4. Rear intermediate beam; 5. U-shaped clip; 6. Main beam; 7. Top cover; 8. Primary transmission chain box; 9. Support seat; 10. Screw connecting rod; 11. Spring; 12. Adjusting screw; 13. Hanging plate; 14. Secondary transmission chain box; 15. Soil crushing wheel mounting frame; 16. Soil crushing wheel; 17. Tensioning component; 18. Adjustable dust cover; 19. External chain; 20. Adjustable dust cover mounting plate; 21. Depth limiting wheel mounting arm; 22. Seedling protector; 23. Depth limiting wheel body; 24. Depth limiting wheel support arm; 25. Depth limiting wheel fixing seat; 26. Depth limiting wheel adjusting disc; 27. Drive shaft; 28. Trapezoidal extension arm; 29. ​​Chain coupling; 30. Reversing gearbox; 31. Loosening shovel; 32. Single row sprocket; 33. Single row chain; 34. Depth limiting wheel I-beam reinforcing rib; 35. Depth limiting wheel adjusting screw; 36. Depth limiting wheel locking nut; 37. Double row chain; 38. Double row sprocket; 39. Loosening shovel fixing seat; 40. Connecting plate; 41. External hexagonal intermediate drive shaft; 42. External hexagonal output shaft; 43. Internal hollow hexagonal shaft; 44. Rotary tillage blade; 45. Rotary tillage blade disc; 46. Stubble removal blade; 47. Stubble removal blade disc. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0036] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in existing technology. The machinery, parts and equipment all adopt conventional models in existing technology. In addition, the circuit connection adopts conventional connection methods in existing technology, which will not be described in detail here.

[0038] Example

[0039] like Figures 1-13 As shown, this embodiment provides a rotary tiller, weeder, and stubble destroyer, including a frame connected to a traveling device (tractor) and a body connected to the frame. The frame includes a main beam 6, a suspension frame 3 mounted on the main beam 6, a connecting beam 1 connected to the suspension frame 3, and a connecting bracket 2 mounted on the connecting beam 1. The suspension frame 3 is connected to the tractor's traction frame below, and the connecting bracket 2 is connected to the tractor's central screw, achieving a stable connection between the entire machine and the tractor. The body includes a reversing gearbox 30 suspended below the main beam 6 and a transmission mechanism connected to the reversing gearbox 30 via a drive shaft 27. The power transmitted from the tractor's rear output shaft is transmitted to the drive shaft 27 through gear shifting and reversing to drive the rotary tiller and stubble destroyer.

[0040] The transmission mechanism consists of five sets of two-stage transmission units. Each set includes a primary transmission chain box 8 and a secondary transmission chain box 14. Below the primary transmission chain box 8 is an outer hexagonal intermediate transmission shaft 41, which passes through the lower part of the primary transmission chain box 8 and the upper part of the secondary transmission chain box 14. Five sets of primary transmission chain boxes 8 are installed on both sides and the rear of the reversing gearbox 30 and are suspended below the main beam 6 by U-shaped clamps 5. Four sets are located on the sides, and one set is located at the rear, connected to the intermediate beam 4, and connected to the transmission shaft 27 by external gears and external chains 19. The U-shaped clamps 5 are fixedly connected to the top cover 7 of the primary transmission chain box 8. The transmission shaft 27 passes through the inner hollow hexagonal shaft 43 in the upper part of the primary transmission chain box 8 and the reversing gearbox 30. The transmission shaft 27 is connected in the middle by a chain coupling 29. The primary drive chain box 8 has double-row sprockets 38 installed on the upper and lower sprockets, and a double-row chain 37 as the drive chain. The secondary drive chain box 14 has single-row sprockets 32 installed on the upper and lower sprockets, and a single-row chain 33 as the drive chain. A tensioning element 17 is provided on the side wall to maintain a constant tension on the single-row chain 33, preventing chain slippage and ensuring stable power transmission. The secondary drive chain box 14 is connected to a rotary tillage and stubble-killing mechanism via an external hexagonal output shaft 42, and the lower end of the contour adjuster is connected to the rotary tillage and stubble-killing mechanism.

[0041] A trapezoidal extension arm 28 is provided at the top rear of the primary drive chain box 8. A contour adjuster is connected below the trapezoidal extension arm 28. The contour adjuster includes a support base 9, a screw connecting rod 10, and an adjusting screw 12 connected in sequence. A spring 11 is sleeved on the screw connecting rod 10. The upper end of the support base 9 is connected to the extension arm of the primary drive chain box 8 through a pin. The lower end of the adjusting screw 12 is connected to the rotary tillage and stubble-killing mechanism (through an adjustable dust cover mounting plate 20). The spring 11 can adjust the included angle between the primary drive chain box 8 and the secondary drive chain box 14 to 100°-110° to ensure the consistency of the machine's tillage depth.

[0042] The rotary tillage and stubble-cutting mechanism consists of a rotary tillage blade assembly or a stubble-cutting blade assembly. The rotary tillage blade assembly has a tillage width of 380mm, and the stubble-cutting blade assembly has a stubble-cutting width of 580mm. The rotary tillage blade assembly includes a rotary tillage disc 45 and rotary tillage blades 44 mounted on the rotary tillage disc 45; the stubble-cutting blade assembly includes a stubble-cutting disc 47 and stubble-cutting blades 46 mounted on the stubble-cutting disc 47. Rotary tillage discs 45 or stubble-cutting discs 47 are mounted on both sides of the external hexagonal output shaft 42 below the secondary drive chain box 14. Multiple rotary tillage blades 44 or stubble-cutting blades 46 are arranged at equal angles on the rotary tillage disc 45 or stubble-cutting disc 47. An adjustable dust cover mounting plate 20 is mounted on the secondary drive chain box 14 above the disc. Adjustable dust covers 18 are fixed to both sides of the adjustable dust cover mounting plate 20 by bolts. A seedling protector 22 is installed in front of the adjustable dust cover 18. Two mounting plates 13 extend from the rear of the adjustable dust cover mounting plate 20. The mounting plates 13 are secured to the soil-crushing wheel mounting frame 15 via two pins. Soil-crushing wheels 16 are mounted on the mounting frame 15. During rotary tillage and weeding operations, the tillage width is 380mm and two soil-crushing wheels 16 are installed. During stubble removal operations, the stubble removal width is 580mm and three soil-crushing wheels 16 are installed. Two connecting plates 40 are installed at the front of the bottom of the secondary transmission chain box 14. The bottom of the secondary transmission chain box 14 forms a 20° angle with the ground. The two connecting plates 40 are reinforced with a depth-limiting wheel I-beam reinforcing rib 34. A depth-limiting wheel assembly is installed in front of the depth-limiting wheel I-beam reinforcing rib 34. The depth-limiting wheel assembly consists of a depth-limiting wheel body 23, a depth-limiting wheel support arm 24, a depth-limiting wheel fixing seat 25, a depth-limiting wheel adjusting disc 26, a depth-limiting wheel adjusting screw 35, a depth-limiting wheel locking nut 36, and a depth-limiting wheel mounting arm 21. The depth-limiting wheel height is adjusted by rotating the upper depth-limiting wheel adjusting disc 26 to drive the depth-limiting wheel adjusting screw 35, and then locked by the depth-limiting wheel locking nut 36. A loosening shovel fixing seat 39 is installed at the rear of the secondary transmission chain box 14, and a loosening shovel 31 is installed below the loosening shovel fixing seat 39.

[0043] Therefore, based on the above-mentioned method of weeding and stubble removal using a mid-tillage and stubble removal machine, the specific steps are as follows:

[0044] During weeding and hoeing, the weeding and stubble-removing machine is attached to the rear of the tractor via the connecting beam 1, connecting frame 2, and suspension frame 3. The power output shaft of the reversing gearbox 30 of the weeding and hoeing machine is connected to the tractor's power output shaft via the drive shaft 27. The suspension frame 3 is attached to the tractor's towing frame below, and the connecting frame 2 is connected to the tractor's central screw. When the tractor moves forward, the reversing gearbox 30 rotates, driven by the hexagonal intermediate drive shaft 41 and the hexagonal output shaft 42. This drives the primary transmission chain box 8 and the secondary transmission chain box 14 on the left and right sides and the rear, respectively, via the drive shaft 27. The primary transmission chain box 8 contains an inner hexagonal hollow shaft at the upper end and an outer hexagonal intermediate drive shaft 41 at the lower end, as well as double-row sprockets 38 and double-row chains 37 in the intermediate transmission section. The upper end of the secondary transmission chain box 14 is equipped with an inner hexagonal hollow shaft, the lower end with an outer hexagonal output shaft 42, and a single row of sprockets 32 and a single row of chains 33 for the intermediate transmission section. Rotary tillage blades 45 or stubble-crushing blades 47 can be mounted on both ends of the lower outer hexagonal output shaft 42. The upper end connects the primary transmission chain box 8 and the secondary transmission chain box 14 via an outer hexagonal intermediate transmission shaft 41. Through the sprockets and chains in between, the outer hexagonal output shaft 42, rotary tillage blades 45, or stubble-crushing blades 47 are driven to rotate. The weeds in front of the rotary tiller disc 45 or the wheat stubble in front of the stubble removal disc 47 are removed by rotary tillage. After rotary tillage or stubble removal, the soil crushing wheel mounting frame 15 connected to the rear end of the hanging plate 13 on the adjustable dust cover mounting plate 20 of the machine's rotary tillage device is driven by the tractor to rotate the soil crushing wheel 16 forward, breaking the larger soil clods that were not crushed after rotary tillage into smaller particles, making the soil more fine and uniform. At the same time, the surface of the land after rotary tillage or stubble removal is leveled.

[0045] Therefore, the present invention, by employing the aforementioned inter-row weeding and stubble-removing machine and method, can solve the problems of inter-row weeding and wheat stubble removal in wheat-corn intercropping.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A tillage, weeding, and stubble-removing machine, comprising a frame connected to a walking device and a body connected to the frame, characterized in that: The frame includes a main beam, and the machine body includes a reversing gearbox suspended below the main beam and a transmission mechanism connected to the reversing gearbox via a drive shaft. The transmission mechanism consists of five sets of two-stage transmission units. Each set of two-stage transmission units includes a primary transmission chain box and a secondary transmission chain box connected to the hexagonal intermediate drive shaft below the primary transmission chain box. A trapezoidal extension arm is provided at the top of the primary transmission chain box and a contour adjuster is connected to it. The secondary transmission chain box is connected to a rotary tillage and stubble-killing mechanism via an hexagonal output shaft, and the lower end of the contour adjuster is connected to the rotary tillage and stubble-killing mechanism.

2. The tillage, weeding, and stubble-removing machine according to claim 1, characterized in that: The five sets of two-stage transmission units are located on both sides and behind the reversing gearbox, and the transmission shaft passes through the hollow hexagonal shaft above the first-stage transmission chain box and is connected to the reversing gearbox. The first-stage transmission chain box has a built-in double-row sprocket and a double-row chain; the second-stage transmission chain box has a built-in single-row sprocket and a single-row chain.

3. The tillage, weeding, and stubble-removing machine according to claim 2, characterized in that: The contour adjuster includes a support base, a screw connecting rod, and an adjusting screw connected in sequence. A spring is sleeved on the screw connecting rod, and the spring adjusts the included angle between the primary transmission chain box and the secondary transmission chain box to 100°-110°.

4. The tillage, weeding, and stubble-removing machine according to claim 3, characterized in that: The rotary tillage and stubble-removing mechanism is connected to the secondary transmission chain box via an adjustable dust cover mounting plate. The top of the adjustable dust cover mounting plate is connected to the contour adjuster via a pin, and adjustable dust covers are fixedly connected to both sides of the adjustable dust cover mounting plate via bolts.

5. A tillage, weeding, and stubble-removing machine according to claim 4, characterized in that: A mounting plate extends from the rear of the adjustable dust cover mounting plate, and the mounting plate is connected to a soil crushing wheel mounting frame, on which a soil crushing wheel is mounted.

6. A tillage, weeding, and stubble-removing machine according to claim 5, characterized in that: The rotary tillage and stubble-removing mechanism is a rotary tillage blade set or a stubble-removing blade set. The rotary tillage blade set has a rotary tillage width of 380mm, and the stubble-removing blade set has a stubble-removing width of 580mm.

7. A tillage, weeding, and stubble-removing machine according to claim 6, characterized in that: The rotary tiller assembly includes a rotary tiller disc and rotary tiller blades mounted on the rotary tiller disc; the stubble removal assembly includes a stubble removal disc and stubble removal blades mounted on the stubble removal disc.

8. A tillage, weeding, and stubble-removing machine according to claim 7, characterized in that: When the rotary tillage and stubble-removing mechanism is a rotary tillage blade assembly, two soil-crushing wheels are provided; or when the rotary tillage and stubble-removing mechanism is a stubble-removing blade assembly, three soil-crushing wheels are provided.

9. A tillage, weeding, and stubble-removing machine according to claim 8, characterized in that: The bottom of the secondary transmission chain box extends forward with a connecting plate to connect to the limited depth wheel assembly, and the bottom of the secondary transmission chain box forms an angle of 20°-30° with the ground.

10. A tillage, weeding, and stubble-removing machine according to claim 9, characterized in that: The depth limiting wheel assembly includes a depth limiting wheel mounting arm, a depth limiting wheel fixing seat, a depth limiting wheel support arm, and a depth limiting wheel body connected in sequence to the depth limiting wheel support arm. The top of the depth limiting wheel fixing seat is connected to a depth limiting wheel adjusting disc via an adjusting screw, and a depth limiting wheel adjusting nut is also provided on the side wall of the depth limiting wheel fixing seat.

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