Four-wheel drive stubble cleaning and weeding paddy field rotary cultivator and using method thereof
Through a four-wheel drive system, front and rear wheel differential structure, adjustable guide wheel height, and hydraulic leveling frame, combined with a unique rotary tiller blade combination, it achieves integrated operation of plowing, slurrying, stubble removal, weeding, and leveling. It solves the problems of traditional rotary tillers such as single function, poor paddy field passability, inconvenient tillage depth adjustment, and incomplete weed treatment, thereby improving work efficiency and field surface flatness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional rotary tillers have limited functions, incomplete operation, poor maneuverability and operability in paddy fields, inconvenient tillage depth adjustment, unsatisfactory leveling effect, and inadequate weed control.
It adopts a four-wheel drive system, front and rear wheel differential structure, adjustable guide wheel height, hydraulic leveling frame and unique rotary tillage blade combination to realize integrated operation of plowing, pulping, stubble removal, weeding and leveling, combined with intelligent control.
It improves operational efficiency, ensures thorough stubble removal and weed control, enhances maneuverability and operability in paddy field environments, enables precise adjustment of tillage depth and field flatness, and adapts to different agronomic requirements.
Smart Images
Figure CN121621058A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of agricultural machinery, in particular to a four-wheel drive stubble and weed removing paddy field rotary cultivator and a use method thereof. BACKGROUND
[0002] At present, rice is the main food crop in China, and the soil preparation link in its planting process is crucial. The traditional paddy field rotary cultivator has single function, and can usually only complete ploughing and beating operation. The hard rice stubble left after the previous rice is harvested and the field weeds are not well treated, and an additional stubble removing or weeding process is often needed, which increases the operation cost and time.
[0003] Some rotary cultivators in the prior art mainly have the following defects or problems: 1. Single function and incomplete operation, the conventional rotary cultivator design focuses on soil tillage, and the treatment capacity for the hard rice stubble left after the previous rice is harvested and the field weeds (especially perennial weeds) is limited. The rice stubble is not cut to an even length, and the weeds are only cut but not broken at the root, which causes the stubble and weeds to accumulate on the field surface or be buried in the shallow layer, affects the subsequent quality of rice seedling, and easily causes the breeding of diseases and pests. Therefore, the farmers often need to additionally perform stubble removing operation or manual weeding, which not only increases the labor intensity and time cost, but also leads to the extension of the operation period and the increase of fuel consumption, which does not conform to the development trend of modern efficient agriculture; 2. Poor water field passability and operability, the water field soil is heavy, the mud is deep, and the resistance is large. The traditional two-wheel drive rotary cultivator is prone to problems such as driving wheel slipping and sinking during operation, especially when turning, the operation is heavy and the trajectory is not accurate, which requires high operation skill of the driver and high labor intensity. Although the existing part of the four-wheel drive model improves the traction performance to a certain extent, it is still not flexible in terms of front and rear wheel power distribution and differential control, and it is difficult to adapt to the muddy and uneven water field environment, which leads to the reduction of operation efficiency and the aggravation of machine wear; 3. Inconvenient depth adjustment, different rice varieties, soil conditions and agricultural requirements have different needs for the depth (usually adjustable within 10-15 cm). The traditional rotary cultivator usually adopts mechanical depth limiting wheel or hydraulic suspension adjustment, which has complex structure, low adjustment precision and inconvenient operation, and needs to be stopped for adjustment in the middle, which affects the operation continuity. Unstable depth also leads to uneven field bottom and inconsistent growth environment of crop roots, and further affects the uniformity of water and fertilizer and yield; 4. Insufficient leveling effect and weak weed control: After rotary tillage, the field surface often exhibits furrows and clods of soil accumulation. Without leveling, this directly affects the uniformity of rice planting depth and subsequent irrigation management. Existing equipment often lacks integrated, adjustable leveling devices, requiring the use of graders or manual leveling, increasing procedures and costs. Furthermore, existing rotary tillers rely heavily on blade cutting for weed control, lacking effective burial and coverage, allowing some weeds to easily regrow. Especially for common aquatic weeds in paddy fields, rotary tillage alone is insufficient for complete control.
[0004] Therefore, there is an urgent need for a special rotary tiller for paddy fields that integrates plowing, slurry preparation, stubble removal, weeding, and leveling, and is easy to operate and highly efficient. Summary of the Invention
[0005] This application provides a four-wheel drive rotary tiller for stubble removal and weed control in paddy fields and its usage method. The first problem to be solved is the "low efficiency" caused by the single function and incomplete operation of traditional rotary tillers. The second problem to be solved is the poor passability and operability in the special environment of paddy fields. The third problem to be solved is the inconvenience of adjusting the tillage depth and the poor leveling effect. The fourth problem to be solved is the incomplete weed control.
[0006] To address the aforementioned technical problems, this application provides a four-wheel drive rotary tiller for paddy fields, comprising: a frame, a walking system, a power system, a transmission system, and a control system. The power system includes an engine, and the control system includes a steering wheel and a seat. The walking system includes a front wheel located at the front of the frame, a rear wheel located at the rear of the frame, and a guide wheel located at the center of the front of the front wheel. The front wheel is a rotary tillage mechanism used for plowing, slurrying, stubble removal, and weeding in paddy fields. The rear wheel is a driving wheel. The guide wheel is height-adjustable and connected to the front end of the frame to adjust the tillage depth of the rotary tillage mechanism. The transmission system includes a gearbox, through which the engine independently transmits power to the front and rear wheels.
[0007] Furthermore, an L-shaped plate extends from the front side of the frame towards the guide wheel. A mounting arm is welded and fixed to the side of the L-shaped plate away from the frame. A screw sleeve is vertically fixed to the end of the mounting arm away from the L-shaped plate. An adjusting screw is provided inside the screw sleeve. The bottom of the adjusting screw is fixedly connected to the guide wheel. An adjusting hole is provided at the top of the screw sleeve. A rotating rod is provided inside the adjusting hole. The bottom of the rotating rod is fixedly connected to the adjusting screw inside the screw sleeve. The top of the rotating rod extends to the outside of the adjusting hole. The rotating rod is used to drive the adjusting screw to rotate, thereby changing the ground clearance of the guide wheel, and thus changing the ground clearance of the front wheel, realizing the adjustment of the rotary tillage depth within the range of 10-25cm.
[0008] Further, the rotary tiller mechanism comprises cage frames arranged on both sides of the frame, a plurality of parallel blades welded to the cage frames, and rotary tiller blades welded to the plurality of parallel blades, the rotary tiller blades being arranged in a spiral shape and being spaced along the length direction of the parallel blades.
[0009] Further, the cage frame comprises a positioning steel disc fixed to the output end of the rotating shaft, positioning ribs fixed to the positioning steel disc in a slanting and spaced manner, and a main positioning steel ring connected to the extending end of the positioning ribs, the parallel blades are arranged vertically to the plane where the guide wheels are located, and the included angle between the parallel blades and the horizontal plane is 15-60°, a plurality of the parallel blades are evenly spaced along the inner circle of the main positioning steel ring, and a plurality of the parallel blades are spaced in the direction towards the guide wheels and are provided with a secondary positioning steel ring, the secondary positioning steel ring and the positioning steel disc are further provided with a slanting auxiliary support rib fixed to the positioning steel disc in a slanting and spaced manner. The rotary tiller blades are spaced along the main positioning steel ring and the secondary positioning steel ring, the rotary tiller blades are arranged in a spiral shape, one rotary tiller blade is arranged at the connecting node of a single parallel blade and the main positioning steel ring and the secondary positioning steel ring, the rotary tiller blade is in the shape of a sickle and comprises a fixed part and a blade part, the fixed part and the blade part are arranged at an included angle, the blade part is bent and inclined to the left or right relative to the positioning steel ring, and the inclined directions of the blade parts of two adjacent rotary tiller blades are opposite.
[0010] Further, the transmission system further comprises a front reduction box and a rear reduction box arranged at the driving ends of the front wheels and the rear wheels, the transmission box independently controls the rotating speeds of the front wheels and the rear wheels through the front reduction box and the rear reduction box to realize the differential speed of the front wheels and the rear wheels.
[0011] Further, the hydraulic power steering machine comprises a hydraulic cylinder fixed to the frame, a piston rod extending into the hydraulic cylinder, and a steering plate fixed to one side of the top of the guide wheel, a power steering part is fixed to the extending end of the piston rod, the top of the steering plate is fixed with a limiting column, and the power steering part is sleeved on the limiting column.
[0012] Further, the leveling frame is arranged at the rear part of the frame, the leveling frame comprises a cross bar, connecting rods connected to both sides of the cross bar, a hinged seat fixed to the middle part of the cross bar, and leveling rods fixed to the outer side of the cross bar, the two connecting rods are hinged to the bottom of the frame, a hydraulic transmission mechanism is connected to the hinged seat, and the hydraulic transmission mechanism is used to adjust the ground clearance of the leveling rods to level the surface of the mud after rotary tillage.
[0013] Further, the cross bar and the leveling rods are fixed by bolts, the leveling rods can be replaced, and the working width of the leveling frame can be adjusted.
[0014] Further, the guide wheel and the rear wheel are rubber wheels, and the top of the front wheel and the rear wheel is respectively provided with a front wheel mud blocking assembly and a rear wheel mud blocking assembly, and the front wheel mud blocking assembly and the rear wheel mud blocking assembly are fixed to the frame.
[0015] Further, the frame is provided with a Beidou navigation system, a motor and a battery, so as to realize indoor automatic control and path planning of the rotary cultivator.
[0016] The use method of the four-wheel drive stubble removing and weeding rotary cultivator for rice field comprises the following steps: step one, rotary cultivation and stubble removing, starting the engine, independently controlling the rotating speeds of the front wheel and the rear wheel through the gearbox and the front speed reducer and the rear speed reducer respectively arranged on the front wheel and the rear wheel, independently transmitting power to the front wheel and the rear wheel, driving the front wheel to rotate as a rotary cultivation mechanism, and cutting and ploughing the soil in the rice field by the parallel blades and the spiral blades on the front wheel, and crushing the rice stubble and weeds; Step two, grass pressing and walking, synchronously driving the rear wheel as a walking power wheel to move forward, and pressing the residual weeds thrown to the rear by the front wheel into the mud through the grass pressing structure on the rear wheel surface; Step three, depth regulation, adjusting the height of the guide wheel connected to the front end of the frame by the rotary adjusting screw before or during operation, so as to change the ground clearance of the front wheel, and realize the rotary cultivation depth regulation in the range of 10-25 cm; Step four, leveling, after the rotary cultivation and stubble removing step and the grass pressing and walking step, adjusting the height of the leveling frame arranged on the rear part of the frame by the hydraulic transmission mechanism, and scraping the surface of the ploughed mud.
[0017] Compared with the prior art, the rotary cultivator has the following characteristics and beneficial effects: The front wheel is designed as a rotary cultivation mechanism, the rear wheel is designed as a grass pressing wheel, and the leveling frame is arranged on the rear part, so that the rotary cultivation, ploughing, stubble removing, weeding and leveling are integrated, and the efficiency is improved; the unique rotary cultivation blade combination and the rear wheel grass pressing structure ensure the completeness of the stubble removing and weeding; the leveling frame ensures the flatness of the field; the four-wheel drive cooperates with the front and rear wheel differential structure and the hydraulic power steering system, so that the machine is easy to turn and has strong passing performance in the paddy field environment; the stepless regulation of the ploughing depth is realized by the simple T-shaped screw mechanism, the working width of the leveling frame can also be adjusted, and the adaptability is wide; the intelligent upgrading interface is reserved, which conforms to the development trend of the integration of agricultural mechanization and intelligence, solves the problems of low efficiency caused by the single function and incomplete operation of the traditional rotary cultivator, poor passing performance and operability in the special environment of the paddy field, inconvenient ploughing depth regulation and poor leveling effect, and imperfect weed treatment, and good effects can be obtained after popularization and use. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1is a side view schematic diagram of a first embodiment of the application; Figure 2 is a top view schematic diagram of a first embodiment of the application; Figure 3 is a front view schematic diagram of a guide wheel of an embodiment of the application; Figure 4 is a top view schematic diagram of a leveling frame of an embodiment of the application; Figure 5 is a side view schematic diagram of a second embodiment of the application; Figure 6 is a schematic diagram of a cage frame structure of an embodiment of the application.
[0019] In the figure, 100, a frame; 110, a steering wheel; 120, a seat; 130, a hydraulic cylinder; 140, a piston rod; 150, a steering plate; 160, a power steering part; 170, a limiting column; 200, an engine; 300, a front wheel; 310, a cage frame; 311, a positioning steel disc; 312, a positioning rib; 313, a main positioning steel ring; 314, a secondary positioning steel ring; 315, an oblique auxiliary support rib; 320, a parallel blade; 330, a rotary tillage blade; 340, a front reduction box; 350, a front wheel mud guard assembly; 400, a rear wheel; 410, a rear wheel mud guard assembly; 420, a rear wheel cage frame; 430, a rear wheel parallel blade; 500, a guide wheel; 510, an L-shaped plate; 520, a mounting arm; 530, a screw sleeve; 540, an adjusting screw; 550, a rotating rod; 600, a leveling frame; 610, a cross rod; 620, a connecting rod; 630, a hinged seat; 640, a leveling rod; 650, a hydraulic transmission mechanism. DETAILED DESCRIPTION
[0020] The specific embodiments of the application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the application, but are not used to limit the scope of the application.
[0021] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0022] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply relative importance or a specific number of features so indicated. Thus, a feature defined with "first", "second", etc. can include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specified.
[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0024] In the first inventive concept of the present application, a compound structure of front wheel rotary tillage + rear wheel grass crushing is adopted. The front wheel (rotary tillage mechanism) performs powerful cutting and crushing through parallel and spiral blade combination; the rear wheel uses wide blade steel wheel to crush the residual weeds into the deep part of the mud, realizing one-time operation to complete ploughing, beating, stubble cleaning and deep weeding, greatly improving the operation efficiency and reducing the comprehensive cost.
[0025] In the second inventive concept of the present application, a four-wheel drive system + front and rear wheel differential structure is adopted. The engine power is independently transmitted to the front and rear wheels through the gearbox and front and rear reduction boxes, allowing the front and rear wheels to have speed difference when turning, significantly improving the traction, anti-sinking ability and steering flexibility in muddy water environment, easy to operate, accurate trajectory, and reducing the burden of the driver.
[0026] In the third inventive concept of the present application, a height-adjustable guide wheel mechanism is provided. Through a simple T-shaped screw rod mechanism, the height of the guide wheel can be quickly and accurately adjusted, thereby steplessly controlling the ploughing depth of the front wheel (rotary tillage mechanism), realizing accurate and convenient control of the ploughing depth in the range of 10-25 centimeters, adapting to different fields and agricultural requirements, and ensuring the best growth environment for crop roots.
[0027] In the fourth inventive concept of the present application, a hydraulic adjustable leveling frame is provided, and a long leveling rod can be added to adjust the working width, effectively scraping the mud after rotary tillage, eliminating ridges and furrows, forming a flat transplanting surface, ensuring uniform water and fertilizer management, and laying a foundation for high and stable yield. Embodiment
[0028] As Figures 1-4As shown, in the first embodiment of the present application, a four-wheel drive stubble cleaning and weeding paddy field rotary cultivator comprises a frame 100, a walking system, a power system, a transmission system and a control system, the power system comprises an engine 200, and the control system comprises a steering wheel 110 and a seat 120; the walking system comprises a front wheel 300 arranged at the front side of the frame 100, a rear wheel 400 arranged at the rear side of the frame 100, and a guide wheel 500 arranged at the middle of the front side of the front wheel 300, the front wheel 300 is a rotary cultivation mechanism, used for realizing ploughing, beating, stubble cleaning and weeding of the paddy field, the rear wheel 400 is a walking power wheel, and the guide wheel 500 is adjustably connected to the front end of the frame 100, used for adjusting the ploughing depth of the rotary cultivation mechanism, the transmission system comprises a gearbox, the engine 200 independently transmits power to the front wheel 300 and the rear wheel 400 through the gearbox, the engine 200 transmits power to the gearbox through a belt, the gearbox has two output ends, independently transmits power to a front reduction box 340 and a rear reduction box through transmission shafts, the front reduction box 340 drives the front wheel 300 to rotate, and the rear reduction box drives the rear wheel 400 to rotate, and this structure of independent power output of the front and rear wheels 400 and differential through respective reduction boxes is the core of realizing four-wheel drive efficient operation.
[0029] Preferably, the front side of the frame 100 extends towards the guide wheel 500 and is provided with an L-shaped plate 510, the side of the L-shaped plate 510 away from the frame 100 is welded and fixed with a mounting arm 520, the end of the mounting arm 520 away from the L-shaped plate 510 is vertically fixed with a screw sleeve 530, the screw sleeve 530 is provided with an adjusting screw 540, the bottom of the adjusting screw 540 is fixedly connected with the guide wheel 500, the top of the screw sleeve 530 is provided with an adjusting hole, the adjusting hole is provided with a rotating rod 550, the bottom of the rotating rod 550 is fixedly connected with the adjusting screw 540 in the screw sleeve 530, the top of the rotating rod 550 extends to the outside of the adjusting hole, and the rotating rod 550 is used to drive the adjusting screw 540 to rotate, so as to change the ground clearance of the guide wheel 500, and then drive the ground clearance of the front wheel 300 to change, thereby realizing the adjustment of the rotary cultivation depth in the range of 10-25 cm.
[0030] The rotary tiller preferably comprises a cage frame 310 arranged on both sides of the frame 100, a plurality of parallel blades 320 welded to the cage frame 310, and rotary tiller blades 330 welded to the plurality of parallel blades 320, the rotary tiller blades 330 being arranged in a spiral shape and spaced along the length of the parallel blades 320. The core of the rotary tiller is a wide cage frame 310, and the plurality of parallel blades 320 on the frame are used for preliminary cutting of soil and roots. During operation, the front wheel 300 rotates under the power of the drive, and the parallel blades 320 and the spiral blades work together to cut, crush, and throw the soil and rice stubble, achieving a depth of 10-25 cm of plowing, beating, and stubble removal. Longer weeds that are not completely crushed by the front wheel 300 will be thrown backward.
[0031] As shown in Figure 6 The cage frame 310 comprises a positioning steel disc 311 fixed to the output end of the rotating shaft, positioning ribs 312 fixed at intervals on the positioning steel disc 311 in a slanting and launching manner, and a main positioning steel ring 313 connected in series at the extension ends of the positioning ribs 312. The parallel blades 320 are arranged vertically along the plane in which the vertical guide wheel 500 is located, and the angle between the parallel blades 320 and the horizontal plane is 15-60°. A plurality of parallel blades 320 are evenly spaced along the inner circle of the main positioning steel ring 313, and a plurality of parallel blades 320 are spaced apart in the direction towards the guide wheel 500 and provided with a secondary positioning steel ring 314. The secondary positioning steel ring 314 is provided with an auxiliary support rib 315 in a slanting and launching manner between the positioning steel disc 311 and the secondary positioning steel ring 314. The rotary tiller blades 330 are arranged at intervals along the main positioning steel ring and the secondary positioning steel ring, and the rotary tiller blades 330 are arranged in a spiral shape. A single parallel blade 320 is provided with a rotary tiller blade 330 at the connection node of the main positioning steel ring and the secondary positioning steel ring. The rotary tiller blade 330 is in the shape of a sickle and comprises a fixed part and a blade part, which are arranged at an angle. The fixed part is welded to the parallel blade 320, and the blade part is bent and inclined to the left or right relative to the positioning steel ring. The inclined directions of the blade parts of adjacent two rotary tiller blades 330 are opposite.
[0032] The transmission system preferably further comprises a front reduction box 340 and a rear reduction box arranged at the drive ends of the front wheel 300 and the rear wheel 400. The transmission box independently controls the rotational speed of the front wheel 300 and the rear wheel 400 through the front reduction box 340 and the rear reduction box, respectively, to achieve differential speed of the front and rear wheels.
[0033] Preferably, the hydraulic power steering machine comprises a hydraulic cylinder 130 fixed on the frame 100, a piston rod 140 extending into the hydraulic cylinder 130, and a steering plate 150 fixed on one side of the top of the guide wheel 500, and the extending end of the piston rod 140 is fixed with a power steering part 160, and the top of the steering plate 150 is fixed with a limiting column 170, and the power steering part 160 is sleeved on the limiting column 170.
[0034] Preferably, the leveling frame 600 is arranged at the rear of the frame 100, and the leveling frame 600 comprises a cross rod 610, connecting rods 620 connected to both sides of the cross rod 610, a hinge seat 630 fixed on the middle of the cross rod 610, and leveling rods 640 fixed on the outer side of the cross rod 610, and the two connecting rods 620 are hinged to the bottom of the frame 100, and the hinge seat 630 is connected with a hydraulic transmission mechanism 650, and the hydraulic transmission mechanism 650 is used to adjust the ground clearance of the leveling rod 640, so as to level the mud surface after rotary tillage.
[0035] Preferably, the cross rod 610 and the leveling rod 640 are bolted, and the leveling rod 640 can be replaced, which is used to adjust the working width of the leveling frame 600, and the leveling frame 600 is controlled to rise and fall through the hydraulic transmission mechanism 650, and when rotary tillage is performed, the leveling frame 600 falls down, and the leveling rod 640 scrapes the mud surface after rotary tillage to eliminate furrows and ridges, so as to form a flat mud layer, which is convenient for subsequent transplanting, and longer leveling rods 640 can be hung on the leveling frame 600 to increase the width of single operation.
[0036] Preferably, the guide wheel 500 and the rear wheel 400 are rubber wheels.
[0037] Preferably, the frame 100 is provided with a Beidou navigation system, a motor and a battery, which are used to realize indoor automatic control and path planning of the rotary tiller, and through a preset program, indoor remote monitoring and automatic path planning can be realized, so that the rotary tiller can be unmanned and automatically operated according to the set route. Embodiment
[0038] As shown in Figure 5 the second embodiment of the present application, the rear wheel 400 is also arranged as a cage frame to form a four-wheel rotary tiller, and the rotary tillage mechanism of the front wheel 300 and the rotary tillage mechanism of the rear wheel 400 have the same main structure, and in order to maintain the movement of the rotary tiller, the rotary tillage blades are removed, which comprises a rear wheel cage frame 420 and a plurality of rear wheel parallel blades 430 welded and fixed on the rear wheel cage frame 420, which are used to crush the rotary tillage mechanism into mud after stubble removal and weeding, so as to fully remove weeds and make fertilizer.
[0039] Based on the specific structure of embodiment 1, the embodiment provides a use method of a four-wheel drive stubble removing and weeding paddy field rotary cultivator, which comprises the following specific steps: step one, rotary cultivation and stubble removal, starting the engine 200, independently controlling the rotating speeds of the front wheel 300 and the rear wheel 400 through the gearbox and the front reduction box 340 and the rear reduction box respectively arranged on the front wheel 400 and the rear wheel 400, independently transmitting power to the front wheel 300 and the rear wheel 400, driving the front wheel 300 to rotate as a rotary cultivation mechanism, and the parallel blades 320 and the spiral blades thereon cut and cultivate the paddy field soil and crush the rice stubble and weeds; Step two, grass pressing and walking, synchronously driving the rear wheel 400 as a walking power wheel to advance, and pressing the residual weeds thrown to the rear after being treated by the front wheel 300 into the mud through the grass pressing structure on the rear wheel 400 wheel surface; Step three, depth regulation, before or during operation, adjusting the height of the guide wheel 500 connected to the front end of the frame 100 through the rotary adjusting screw 540 to change the ground clearance of the front wheel 300, so as to realize the rotary cultivation depth regulation in the range of 10-25 cm; Step four, leveling, after the rotary cultivation and stubble removal step and the grass pressing and walking step, adjusting the height of the leveling frame 600 arranged at the rear part of the frame 100 through the hydraulic transmission mechanism 650 to scrape the surface of the rotary cultivated mud.
[0040] In summary, the present application relates to the technical field of agricultural machinery, and discloses a four-wheel drive stubble removing and weeding paddy field rotary cultivator and a use method thereof, which comprises a frame, a walking system, a power system, a transmission system and a control system, wherein the power system comprises an engine, and the control system comprises a steering wheel and a seat; the walking system comprises a front wheel arranged on the front side of the frame, a rear wheel arranged on the rear side of the frame, and a guide wheel arranged on the front side of the middle part of the front wheel, the front wheel is a rotary cultivation mechanism for realizing the ploughing, puddling, stubble removal and weeding of the paddy field, the rear wheel is a walking power wheel, the guide wheel is adjustably connected to the front end of the frame for adjusting the ploughing depth of the rotary cultivation mechanism, and the transmission system comprises a gearbox, and the engine independently transmits power to the front wheel and the rear wheel through the gearbox.
[0041] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make some improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be regarded as the protection scope of the present application.
Claims
1. A four-wheel drive stubble cleaning and weeding paddy field rotary cultivator comprising: The rack (100), walking system, power system, transmission system and control system, the power system includes engine (200), the control system includes steering wheel (110) and seat (120); characterized in that, the walking system includes the front wheel (300) arranged in the front side of the rack (100), the rear wheel (400) arranged in the rear side of the rack (100), and the guide wheel (500) arranged in the middle of the front side of the front wheel (300), the front wheel (300) is a rotary tillage mechanism, for realizing the ploughing, beating, stubble cleaning and weeding of paddy field, the rear wheel (400) is a walking power wheel, the guide wheel (500) is adjustably connected to the front end of the rack (100), for adjusting the depth of tillage of the rotary tillage mechanism, the transmission system includes a gearbox, the engine (200) is independently transmitted to the front wheel (300) and the rear wheel (400) through the gearbox through the rotating shaft respectively. The rotary tillage mechanism includes a cage frame (310) arranged on both sides of the guide wheel (500) in the front part of the rack (100), a plurality of parallel blades (320) welded and fixed on the cage frame (310), and rotary tillage blades (330) welded and fixed on the plurality of parallel blades (320), the rotary tillage blades (330) are arranged in a spiral shape, and the rotary tillage blades (330) are arranged in multiple along the length direction of the parallel blades (320).
2. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The front side of the rack (100) extends to the direction of the guide wheel (500) with an L-shaped plate (510), the side away from the rack (100) of the L-shaped plate (510) is welded and fixed with a mounting arm (520), one end of the mounting arm (520) away from the L-shaped plate (510) is vertically fixed with a screw sleeve (530), the screw sleeve (530) is provided with an adjusting screw (540) inside, the bottom of the adjusting screw (540) is fixedly connected with the guide wheel (500), the top of the screw sleeve (530) is provided with an adjusting hole, the adjusting hole is provided with a rotating rod (550), the bottom of the rotating rod (550) is fixedly connected with the adjusting screw (540) inside the screw sleeve (530), the top of the rotating rod (550) extends to the outside of the adjusting hole, and the rotating rod (550) is used to drive the adjusting screw (540) to rotate, so as to change the ground clearance of the guide wheel (500), and then drive the ground clearance of the front wheel (300) to change, so as to realize the adjustment of the rotary tillage depth in the range of 10-25cm.
3. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The cage frame (310) comprises a positioning steel disc (311) fixed with the rotating shaft output end, positioning ribs (312) fixed on the positioning steel disc (311) in a slanting and emitting manner, and a main positioning steel ring (313) connected in series at the extending end of the positioning ribs (312), the parallel blades (320) are arranged in a vertical manner along the plane perpendicular to the plane where the guide wheel (500) is located, and the included angle between the horizontal plane and the vertical plane is 15-60°, a plurality of the parallel blades (320) are uniformly arranged along the inner circle of the main positioning steel ring (313), and a plurality of the parallel blades (320) are arranged in a spaced manner along the direction towards the guide wheel (500), and a secondary positioning steel ring (314) is arranged on the parallel blades (320), the secondary positioning steel ring (314) and the positioning steel disc (311) are further provided with a slanting auxiliary supporting rib (315) fixed on the positioning steel disc (311) in a slanting and emitting manner; The rotary tillage blade (330) is arranged in a spaced manner between the main positioning steel ring and the secondary positioning steel ring, the rotary tillage blade (330) is arranged in a spiral manner, one rotary tillage blade (330) is arranged at the connecting node of the main positioning steel ring and the secondary positioning steel ring of each parallel blade (320), the rotary tillage blade (330) is in the shape of a sickle and comprises a fixed part and a blade part, the fixed part and the blade part are arranged at an included angle, the blade part is bent and inclined to the left or to the right relative to the positioning steel ring, and the inclined directions of the blade parts of two adjacent rotary tillage blades (330) are opposite.
4. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The transmission system further comprises a front reduction box (340) and a rear reduction box arranged at the driving ends of the front wheel (300) and the rear wheel (400), and the transmission box independently controls the rotating speeds of the front wheel (300) and the rear wheel (400) through the front reduction box (340) and the rear reduction box, so as to realize the differential speed of the front wheel (300) and the rear wheel (400).
5. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The hydraulic power steering machine comprises a hydraulic cylinder (130) fixed on the frame (100), a piston rod (140) extending into the hydraulic cylinder (130), and a steering plate (150) fixed on one side of the top of the guide wheel (500), the extending end of the piston rod (140) is fixed with a power steering part (160), the top of the steering plate (150) is fixed with a limiting column (170), and the power steering part (160) is sleeved on the limiting column (170).
6. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The leveling frame (600) is arranged at the rear part of the frame (100), the leveling frame (600) comprises a cross rod (610), connecting rods (620) connected to the two sides of the cross rod (610), a hinged seat (630) fixed at the middle part of the cross rod (610), and a leveling rod (640) fixed on the outer side of the cross rod (610), the two connecting rods (620) are hinged to the bottom of the frame (100), the hinged seat (630) is connected with a hydraulic transmission mechanism (650), and the hydraulic transmission mechanism (650) is used for adjusting the ground clearance of the leveling rod (640) to level the mud surface after rotary tillage.
7. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The cross rod (610) and the leveling rod (640) are fixed by bolts, the leveling rod (640) can be replaced, and the working width of the leveling frame (600) can be adjusted.
8. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The guide wheel (500) and the rear wheel (400) are rubber wheels.
9. The four-wheel drive stubble cleaning and weeding rice field rotary cultivator according to claim 1, characterized in that, The Beidou navigation system, the motor and the battery are arranged on the frame (100) to realize indoor automatic control and path planning of the rotary cultivator.
10. The method of using a four-wheel, stubble-cleaning, weeding, rotary cultivator for rice fields as claimed in any one of claims 1 to 9, wherein, Specific steps of the method are as follows: step one, rotary tillage and stubble cleaning, starting the engine (200), independently controlling the rotating speeds of the front wheel (300) and the rear wheel (400) through the gearbox and the front speed reducer (340) and the rear speed reducer (340) arranged on the front wheel (400) and the rear wheel (400) respectively, independently transmitting power to the front wheel (300) and the rear wheel (400), driving the front wheel (300) to rotate as a rotary tillage mechanism, and cutting and ploughing the paddy field soil through the parallel blades (320) and the spiral blades on the front wheel (300), and crushing the rice stubble and weeds; Step two, grass pressing and walking, synchronously driving the rear wheel (400) as a walking power wheel to advance, and pressing the residual weeds thrown to the rear through the front wheel (300) into the mud through the grass pressing structure on the rear wheel (400) surface; Step three, depth regulation, before or during operation, adjusting the height of the guide wheel (500) connected to the front end of the frame (100) through the rotating adjusting screw (540), changing the ground clearance of the front wheel (300), and realizing the rotary tillage depth regulation in the range of 10-25cm; Step four, leveling, after the rotary tillage and stubble cleaning step and the grass pressing and walking step, adjusting the height of the leveling frame (600) arranged on the rear part of the frame (100) through the hydraulic transmission mechanism (650), and scraping the surface of the rotary tillage mud.