Inter-row active anti-blocking driving and shifting combined weeding machine for soybeans

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a soybean inter-row active anti-blocking driving and shifting combined weeding machine which comprises a three-point suspension type rack, a plurality of combined weeding single bodies are suspended at the rear end of the three-point suspension type rack, and two land wheel assemblies are installed on the left side and the right side of the three-point suspension type rack. Each combined weeding single body is composed of a four-rod profiling device, a mounting frame, an active straw pulling device, a weeding device, a seedling protecting device and a grass-soil separating device. According to the suspension traction type weeding machine integrating inter-row weeding, straw disturbance throwing and grass-soil separation, efficient, low-consumption and environment-friendly mechanical weeding is achieved under the straw covering condition through multi-system collaborative innovation, so that the weeding operation efficiency is improved under the condition of straw covering water retention and entropy retention, and the weeding quality is improved. The soybean field management machine has the remarkable advantages in the aspects of efficient weeding, crop protection, high adaptability, anti-blocking design, accurate control, environmental protection benefits, economic benefits and the like, and an advanced and reliable mechanical solution is provided for soybean field management.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and particularly relates to a combined weeding machine for active anti-blocking and driving and dialing between soybean rows. Background Art

[0002] As the second largest main soybean producing area in China, the Huang-Huai-Hai region widely adopts a one-year double-cropping rotation mode of "winter wheat - summer soybean". Straw returning to the field is an important agricultural measure in this region, which can effectively increase the content of soil organic matter and reduce water evaporation, thus significantly improving the water use efficiency and yield of soybeans.

[0003] However, a large amount of residual straw fragments (usually with a covering amount of 3 - 5 tons per hectare) after wheat straw returning to the field have seriously hindered the mechanized weeding operation in the subsequent soybean fields. Therefore, current chemical weeding is still the main method for controlling weeds in the field. Although chemical weeding is highly efficient, its harm to the environment and health cannot be ignored. In order to reduce the dependence on chemical agents, the agricultural field is actively exploring more environmentally friendly alternative solutions, and mechanical weeding technology has attracted much attention due to its sustainability and low environmental impact. Currently, few weeding machines on the market are suitable for conservation tillage, and most are rotary hoes and spring-tooth harrows. Moreover, when such machines are performing weeding operations, the cutting tools are easily entangled with the surface straw, resulting in equipment blockage and a decline in operation efficiency. In addition, existing weeding machines are difficult to effectively separate weeds from the soil, and the remaining weed roots are easily adhered to the soil and regenerated.

[0004] Therefore, in combination with the straw covering situation of no-till operations and the mechanical weeding operation requirements at the seedling stage in the Huang-Huai-Hai region, a combined weeding machine capable of realizing straw disturbance and spreading, air flow assisted anti-blocking, and separation of grass and soil is designed. Summary of the Invention

[0005] Aiming at the above-mentioned existing defects and problems, the present invention provides a suspended and traction-type weeding machine that integrates inter-row weeding, straw disturbance and spreading, and separation of grass and soil. Through the collaborative innovation of multiple systems, it realizes efficient, low-consumption, and environmentally friendly mechanized weeding under the condition of straw covering, so as to improve the weeding operation efficiency under the condition of straw covering for water and entropy conservation.

[0006] The solution adopted by the present invention to solve the technical problem is: a soybean inter-row active anti-blocking driving and pulling combined weeder, comprising a three-point suspension frame, a plurality of combined weeding units are suspended at the rear end of the three-point suspension frame, and two ground wheel assemblies are installed on the left and right sides, the combined weeding unit is composed of a four-rod profiling device, a mounting frame, an active straw pulling device, a weeding device, a seedling protection device and a grass-soil separation device, the mounting frame is connected to the three-point suspension frame through the four-rod profiling device, the weeding device, the seedling protection device and the grass-soil separation device each have two groups, all of which are installed and distributed on both sides of the combined weeding unit through the mounting frame, and limited depth wheels are installed on the left and right sides of the mounting frame, as well as a depth limit wheel adjustment device for adjusting the height of the depth limit wheel; The mounting frame is welded by two parallel steel pipe fixing plates, a rectangular steel pipe and a hollow square pipe. The mounting frame is fixed to the rear fixing plate of the four-rod profiling device through the hollow rectangular pipe at the front end of the steel pipe fixing plate. The weeding device is fixed on the rectangular steel pipe, and includes a wing-shaped weeding shovel installed through an S-shaped spring handle. The wing-shaped weeding shovel is used to cut weeds. The seedling protection device is fixed on the hollow square pipe, and includes a seedling protection wheel installed through a swing arm, and the seedling protection wheel is close to the outside of the wing-shaped weeding shovel, and is used to isolate the wing-shaped weeding shovel and bean seedlings. The active straw-pushing device includes a chain drive housing and a straw-pushing wheel. The chain drive housing is vertically clamped between the two steel pipe fixing plates. The straw-pushing wheel is installed on the chain drive housing for pushing away the straw. The grass-soil separation device is fixed to the rearmost end of the mounting frame through the square pipe with ears at the rear end of the steel pipe fixing plate, and includes a finger wheel for separating soil and weeds.

[0007] Furthermore, the four-rod profiling device includes a lower connecting rod, an upper connecting rod, a front fixed plate, and a rear fixed plate. The ends of the four are hinged by long pins to form a parallelogram connecting rod mechanism, and also includes an adjusting handle. A downward pressure spring is connected to the lower connecting rod, and the other end of the downward pressure spring is connected to the adjusting handle. A plurality of grooves are provided on the upper connecting rod, and the adjusting handle is stuck in the grooves of the upper connecting rod. The operating depth of the device can be adjusted by adjusting the groove position corresponding to the adjusting handle.

[0008] Furthermore, the active straw-pulling device consists of a DC motor, a chain drive housing, a transmission chain and a straw-pulling wheel. The chain drive housing is vertically welded between two steel pipe fixing plates of the mounting frame. The DC motor is installed on the top of the chain drive housing. A hexagonal shaft is rotatably mounted on the bottom of the chain drive housing. The output shaft of the DC motor is connected to the hexagonal shaft through a transmission chain. The straw-pulling wheel is fixedly mounted on both ends of the hexagonal shaft, and a plurality of serrated structure pulling knives are welded and fixed on the straw-pulling wheel.

[0009] Further, two groups of weeding devices are located on both sides of the combined weeding monomer and are arranged staggeredly. The weeding device is composed of an L-shaped steel, an inner hexagonal bolt, an S-shaped spring handle, and a wing-shaped weeding shovel. The top end of the S-shaped spring handle passes through the flat hole of the L-shaped steel and is fixed on the rectangular steel pipe by an inner hexagonal bolt. The bottom end of the S-shaped spring handle is fixed with a wing-shaped weeding shovel.

[0010] Further, two groups of seedling protection devices are located on both sides of the combined weeding monomer. The seedling protection device is composed of a square sleeve, a seedling protection wheel, a swing arm, and a swing arm fixing pin. The square sleeve is fixed on the hollow square pipes on both sides of the mounting rack by a set screw. One end of the swing arm is equipped with a seedling protection wheel, and the other end is fixed on the square sleeve by a swing arm fixing pin. The seedling protection wheel is located outside the weeding device and is close to the wing-shaped weeding shovel. A tension spring is connected between the square sleeve and the swing arm. One end of the tension spring is connected to the square sleeve, and the other end is connected to the swing arm. Under the action of the tension spring, the swing arm is close to the adjusting pin in the swing arm fixing pin.

[0011] Further, two groups of grass and soil separation devices are located on both sides of the tail end of the combined weeding monomer. The grass and soil separation device is composed of a tension spring, a telescopic sleeve, and a finger wheel. A square pipe A with ears and a square pipe B with ears are welded up and down at the rear end of the steel pipe fixing plate. The front end of the telescopic sleeve is fixed at the end of the square pipe A with ears by a pin, and a finger wheel is installed at the tail end. A tension spring is connected between the square pipe B with ears and the telescopic sleeve. One end of the tension spring is connected to the end of the square pipe B with ears, and the other end is connected to the telescopic sleeve.

[0012] Further, the depth-limiting wheel adjusting device includes an H-shaped fixing frame and a perforated adjusting screw rod. The depth-limiting wheel is installed on the H-shaped fixing frame. The other end of the H-shaped fixing frame is installed on the chain drive housing. A perforated support plate is installed on the H-shaped fixing frame. The tail end of the perforated adjusting screw rod passes through its hole, and the tail end is limited and fixed by a hexagonal nut. A hexagonal long pin is installed on the front side of the chain drive housing. The upper end of the perforated adjusting screw rod is fixed on the chain drive housing by the hexagonal long pin.

[0013] Further, a straw anti-blocking scraper and an air flow duct are arranged above the active straw pushing device. The straw anti-blocking scraper is vertically fixed on the chain drive housing by small screws and is located above the straw pushing wheel. The air flow duct is installed on the chain drive housing, and the air blowing port faces the active straw pushing device.

[0014] Further, a plurality of adjusting holes are provided on the swing arm fixing pin. The adjusting pin is inserted into the adjusting hole. By adjusting the hole position of the adjusting pin on the swing arm fixing pin, the soil penetration depth of the seedling protection wheel can be adjusted.

[0015] Further, an inner tube is slidably nested at the tail end of the telescopic sleeve, the finger dial is installed at the tail end of the inner tube, and a set screw is installed on the telescopic sleeve near the inner tube. The set screw is used to adjust the extension length of the inner tube in the telescopic sleeve.

[0016] Advantages of the present invention: High-efficiency anti-clogging and straw treatment ability: Through the synergistic action of the serrated straw-pushing knives of the active straw-pushing device, the straw anti-clogging scraper, and the air flow duct, the rapid separation of straw and prevention of entanglement are realized, significantly reducing the clogging rate and ensuring the continuous and efficient operation of the weeding machine in the field; the rotation speed of the straw-pushing wheel driven by the DC motor is intelligently matched with the forward speed of the machine, and combined with the real-time feedback of the GPS speedometer and the ground wheel encoder, the operation efficiency is dynamically optimized; Adaptive terrain and precise operation: The four-bar profiling device automatically adapts to the ground undulation through the elastic compensation of the parallelogram link mechanism and the compression spring, maintaining a constant penetration depth of the weeding shovel and avoiding missed weeding or seedling damage; the depth-limiting wheel adjustment device and the multi-stage adjustment function of the ground wheel assembly support flexible adaptation to different row spacings, soil conditions, and operation depths, improving the versatility of the machine; Synergistic optimization of seedling protection and weeding: Through the linkage design of the swing arm and the tension spring of the seedling protection device, the seedling protection wheel always closely adheres to the outside of the wing-shaped weeding shovel, effectively blocking the splashing soil and straw, protecting the soybean seedlings from mechanical damage, and significantly improving the success rate of seedling protection; the S-shaped elastic handle of the weeding device provides elastic buffering, reducing the risk of damage to the crop roots caused by hard impact. At the same time, the arc-shaped cutting edge of the wing-shaped weeding shovel can accurately cut off the weed roots, with a relatively high weeding rate; Efficient separation of grass and soil and environmental friendliness: The finger dial of the grass-soil separation device quickly separates the shoveled weeds and soil through the synergistic action of rolling and the tension spring, reducing the regeneration rate of residual weed roots and reducing the subsequent weeding requirements; the all-mechanical operation mode replaces chemical weeding, significantly reducing the amount of pesticide used, meeting the requirements of green agriculture and sustainable development; In summary, the active anti-clogging and driving combined weeding machine for soybean rows of the present invention has significant advantages in aspects such as high-efficiency weeding, crop protection, strong adaptability, anti-clogging design, precise control, environmental benefits, and economic benefits, providing an advanced and reliable mechanical solution for soybean field management. Description of the drawings

[0017] Figure 1 It is the overall structure schematic diagram of the present invention; Figure 2 It is the top view structure schematic diagram of the present invention; Figure 3 It is the side view structure schematic diagram of the present invention; Figure 4 It is the schematic diagram of the combined weeding monomer of the present invention; Figure 5Schematic diagram of the parallelogram profiling device of the present invention; Figure 6 Schematic diagram of the mounting rack of the present invention; Figure 7 Schematic diagram of the ground wheel of the present invention; Figure 8 Schematic diagram of the active straw pushing device of the present invention; Figure 9 Schematic diagram of the straw pushing wheel of the present invention; Figure 10 Schematic diagram of the weeding device of the present invention; Figure 11 Schematic diagram of the seedling protection device of the present invention; Figure 12 Schematic diagram of the grass and soil separation device of the present invention.

[0018] In the figure: 1. GPS speedometer; 2. Control box; 3. Three-point suspension frame; 4. Battery box; 5. Ground wheel assembly; 6. Combined weeding monomer; 7. Depth wheel adjustment device; 8. Mounting rack; 9. Active straw pushing device; 10. Weeding device B; 11. Seedling protection device B; 12. Grass and soil separation device B; 13. Seedling protection device A; 14. Weeding device A; 15. Grass and soil separation device A; 16. Four-bar profiling device; 101. L-shaped steel; 102. Hexagon socket head cap screw; 103. S-shaped spring handle; 104. Hexagon socket countersunk head screw; 105. Wing-shaped weeding shovel; 501. U-bolt; 502. Ground wheel frame sleeve; 503. Adjusting bolt; 504. Ground wheel frame; 505. Ground wheel; 506. Rotary speed encoder; 701. Hexagon long pin; 702. Adjusting lead screw with hole; 703. Depth wheel; 704. Hexagon nut; 705. Hexagon bolt A; 706. Support plate with hole; 707. H-shaped fixing frame; 708. Hexagon bolt B; 801. Square tube A with ear; 802. Steel pipe fixing plate; 803. Rectangular steel pipe A; 804. Rectangular steel pipe B; 805. Hollow square tube A; 806. Hollow rectangular tube; 807. Hollow square tube B; 808. Square tube B with ear; 901. Chain drive housing; 902. Drive chain; 903. DC motor; 904. Serrated straw pushing knife; 905. Straw anti-blocking scraper; 906. Straw pushing wheel; 907. Small bolt; 908. Triangular bearing seat; 909. Hexagonal shaft; 910. Air duct; 1101. Set screw; 1102. Square sleeve; 1103. Short pin; 1104. Tension spring; 1105. Seedling protection wheel; 1106. Swing arm; 1107. Swing arm fixing pin; 1108. Adjusting pin; 1201. Tension spring; 1202. Telescopic sleeve; 1203. Set screw; 1204. Inner tube; 1205. Finger dial wheel 1601. Upper connecting rod; 1602. Front fixing plate; 1603. Adjusting handle; 1604. Lower pressing spring; 1605. Lower connecting rod; 1606. Rear fixing plate; 1607. Long pin Specific implementation mode

[0019] The present invention will be further described below in conjunction with the drawings and embodiments

[0020] Please refer to Figures 1-12 The present invention provides a technical solution of a suspension traction type weeding machine integrating inter-row weeding, straw disturbing and spreading, and grass-soil separation Embodiment

[0021] According to Figures 1-3 As shown, a combined weeding machine for active anti-blocking and driving in soybean rows mainly includes a three-point suspension frame 3 and a combined weeding unit 6. A control box 2, a GPS speedometer 1 and a battery box 4 are fixedly installed on the three-point suspension frame 3. Two ground wheel assemblies 5 are fixedly installed at the rear end of the three-point suspension frame 3 by bolts. The distance between the two ground wheel assemblies 5 on the three-point suspension frame 3 can be adjusted to adapt to different crop row spacings. The combined weeding unit 6 is mounted behind the three-point suspension frame 3. In actual application, multiple groups of combined weeding units 6 can be set on the three-point suspension frame 3 according to the number of rows in the farmland

[0022] The combined weeding unit 6 mainly consists of a four-bar profiling device 16, a mounting frame 8, an active straw-pushing device 9, a weeding device, a seedling protection device and a grass-soil separation device. Two weeding devices, seedling protection devices and grass-soil separation devices are provided on each combined weeding unit 6 and are distributed on both sides of the combined weeding unit 6. Depth-limiting wheels 903 are installed on the left and right of the mounting frame 8 to cooperate with the ground wheel assemblies 5 to enable the weeding machine to move forward stably in the field

[0023] As Figure 5As shown in the figure, the four-bar profiling device 16 includes two groups of lower connecting rods 1605, upper connecting rods 1601, front fixing plates 1602, and rear fixing plates 1606. The ends of the four are hinged by long pins 1607 to form two groups of parallelogram link mechanisms, and the two groups of parallelogram link mechanisms are connected by a cross bar. It also includes an adjusting handle 1603. A downward pressure spring 1604 is fixed on the cross bar of the lower connecting rod 1605, and the other end of the downward pressure spring 1604 is connected to the adjusting handle 1603. A plurality of grooves are provided on the upper connecting rod 1601, and the adjusting handle 1603 is stuck in the grooves of the upper connecting rod 1601. In actual operation, the depth-limiting wheel 703 can be made to closely adhere to the ground by adjusting the groove position corresponding to the adjusting handle 1603 to meet the profiling requirements. And when the ground undulates, the profiling device automatically adapts to the terrain changes to ensure that the working depth of the weeding shovel 105 is consistent, avoiding damaging seedlings or missing weeding.

[0024] The structure of the mounting rack 8 is as Figure 6 shown, and it is mainly welded by two parallel steel pipe fixing plates 802, rectangular steel pipes, and hollow square pipes. The active straw-pushing device is fixed between the two steel plates. The weeding device is fixed on the rectangular steel pipe by an L-shaped steel plate and bolts. The seedling protection device is fixed on the two side hollow square pipes by a square sleeve and a set screw. The grass-soil separation device is fixed at the rearmost end of the mounting rack. Specifically, a hollow rectangular pipe 806 is welded and fixed at the front end of the steel pipe fixing plate 802. The mounting rack 8 is fixedly welded to the rear fixing plate 1606 of the four-bar profiling device 16 through the hollow rectangular pipe 806. An ear-bearing square pipe A801 and an ear-bearing square pipe B808 are welded and fixed at the rear end of the steel pipe fixing plate 802. The ear-bearing square pipe A801 and the ear-bearing square pipe B808 are arranged parallel up and down. A rectangular steel pipe A803, a rectangular steel pipe B804, a hollow square pipe A805, and a hollow square pipe B807 are vertically and penetratingly welded and fixed on the steel pipe fixing plate 802. The positions of the rectangular steel pipe and the hollow square pipe are reasonably arranged according to the positions of the seedling protection device and the weeding device of the weeding machine; the seedling protection device A13 is fixed at the hollow square pipe A805 by a square sleeve 1102 and a set screw 1101, and the seedling protection device B11 is fixed at the hollow square pipe B807 in the same way; the weeding device A14 is fixed on the rectangular steel pipe A803 by an L-shaped steel 101 and an inner hexagon bolt 102, and the weeding device B10 is fixed on the rectangular steel pipe B804 in the same way; the chain drive housing 901 of the active straw-pushing device 9 is vertically clamped between the two steel pipe fixing plates 802 and fixed by welding; the grass-soil separation device A15 and the grass-soil separation device B12 are fixed at both ends of the ear-bearing square pipe A801 by pins.

[0025] The structure of the active straw-pushing device 9 is as Figure 8As shown in the figure, it mainly consists of a DC motor 903, a chain drive housing 901, a drive chain 902, a straw anti-clogging scraper 905, a straw separating wheel 906, a serrated structure cutter 904, etc. The DC motor 902 is installed on one side of the top of the chain drive housing 901 through fixing bolts. A hexagonal shaft 909 is vertically rotatably sleeved at the bottom of the chain drive housing 901 through a triangular bearing seat 908. The output shaft of the DC motor 902 is drivingly connected to the hexagonal shaft 909 through the drive chain 902, and the drive chain 902 is arranged inside the chain drive housing 901. The straw separating wheels 906 are fixedly sleeved at both ends of the hexagonal shaft 909. The straw separating wheels 906 are driven by the DC motor 902 through chain drive of the drive chain 902. A plurality of serrated structure cutters 904 are fixedly welded on the straw separating wheels 906. When the straw separating wheels 906 rotate, the serrated cutters 904 on the straw separating wheels will separate the surface straw from between the rows; The DC motor 902 is powered by a battery box 4 fixed on the three-point hitch frame 3. The speed of the DC motor 902 is adjusted by a control box 2. A GPS speed measurement device is fixed on the control box 2. A rotary speed encoder is also installed on the ground wheel under the three-point hitch frame 3. The control system obtains the forward speed of the machine by acquiring the speed information of the GPS and the encoder, and then can adjust the speed of the DC motor 902 in real time, so that the straw separating wheel 906 is always at the optimal speed during operation.

[0026] Both the weeding device A14 and the weeding device B10 are composed of an L-shaped steel 101, an internal hexagonal bolt 102, an S-shaped spring handle 103, an internal hexagonal countersunk head screw 104, and a wing-shaped weeding shovel 105. Here, the weeding device A14 is taken as an example, specifically as Figure 10 shown in the figure. A flat hole is opened on the L-shaped steel 101. The top end of the S-shaped spring handle 103 passes through the flat hole of the L-shaped steel 101, and the two are fixedly connected to the rectangular steel pipe A803 of the mounting rack 8 through the internal hexagonal bolt 102. The wing-shaped weeding shovel 105 is fixed to the bottom end of the S-shaped spring handle 103 through the internal hexagonal countersunk head screw 104; The weeding device B10 is fixed to the rectangular steel pipe B804 in the same way, and the weeding device A14 and the weeding device B10 are respectively located on both sides of the combined weeding monomer 6, and both are behind the straw separating wheel, arranged in a staggered manner. When the weeding machine moves forward, the weeding shovel enters the soil, uses the arc-shaped cutting edge to cut off the roots of the weeds, and uproots the weeds by means of the forward power of the machine to remove the weeds between the rows.

[0027] Two seedling protection devices are also provided on each combined weeding monomer 6, namely the seedling protection device A13 and the seedling protection device B11. The seedling protection device A13 and the seedling protection device B11 are both composed of a set screw 1101, a square sleeve 1102, a pin 1103, a tension spring 1104, a seedling protection wheel 1105, a swing arm 1106, a swing arm fixing pin 1107, and an adjusting pin 1108, and are respectively located on both sides of the combined weeding monomer 6. Specifically as Figure 11As shown in the figure, the square sleeve 1102 is fixed on the hollow square tubes on both sides of the mounting rack 8 through set screws 1101. A swing arm fixing pin 1107 is welded and fixed on the square sleeve 1102. A plurality of adjustment holes are provided on the swing arm fixing pin 1107, and an adjustment pin 1108 is inserted into the hole of the swing arm fixing pin 1107. The seedling protection wheel 1105 is installed at one end of the swing arm 1106, and the other end of the swing arm 1106 is fixed on the square sleeve 1102 through the swing arm fixing pin 1107. The seedling protection wheel 1105 is located outside the weeding device and closely adheres to the wing-shaped weeding shovel 105; A tension spring 1104 is connected between the square sleeve 1102 and the swing arm 1106. One end of the tension spring 1104 is fixed on the square sleeve 1102 through a pin 1103, and the other end is fixed on the swing arm 1106 through a pin 1103. Under the elastic pulling action of the tension spring 1104, the swing arm 1106 will closely adhere to and abut against the adjustment pin 1108. The position and inclination angle of the swing arm 1106 are limited by the adjustment pin 1108, thereby limiting the height of the seedling protection wheel 1105. And by adjusting the hole position of the adjustment pin 1108 on the square sleeve 1102, the position and inclination angle of the swing arm 1106 can be adjusted, and then the penetration depth of the seedling protection wheel 1105 can be adjusted, so that the seedling protection wheel 1105 can always closely adhere to the wing-shaped weeding shovel 105 at different working depths. Each seedling protection device corresponds to the weeding device, and the seedling protection wheels are all outside the wing-shaped weeding shovel, blocking the splashing soil and straw, and preventing the soil and straw lifted by the wing-shaped weeding shovel from hurting the soybean seedlings.

[0028] Both the soil and grass separation device A15 and the soil and grass separation device B12 are composed of a tension spring 1201, a telescopic sleeve 1202, a set screw 1203, an inner tube 1204, and a finger wheel 1205, and are respectively located on both sides of the tail end of the combined weeding monomer 6. Specifically, as Figure 12 shown, the front end of the telescopic sleeve 1202 is fixed to the end of the square tube A801 with ears of the mounting rack 8 through a pin. The tail end of the telescopic sleeve 1202 is slidably nested with an inner tube 1204. The tail end of the inner tube 1204 is equipped with a finger wheel 1205. A small motor for driving its rotation is installed on the finger wheel 1205. The finger wheel 1205 separates the grass and soil shoveled by the front wing-shaped weeding shovel through rolling, preventing the weeds from taking root and growing again; And a set screw 1203 is installed on the telescopic sleeve 1202 near the inner tube 1204. The extension length of the inner tube 1204 in the telescopic sleeve 1202 can be adjusted through the set screw 1203, thereby adjusting the position of the finger wheel 1205; A tension spring 1201 is connected between the square tube B808 with ears and the telescopic sleeve 1202. One end of the tension spring 1201 is fixed to the end of the square tube B808 with ears through a pin, and the other end is fixed to the telescopic sleeve 1202 through a pin.

[0029] During specific use, for a soybean inter-row active anti-blocking and driving-combined weeding machine of the present invention, the weeding machine is towed by a tractor or other towing devices to move in the field. The GPS speedometer 1 and the rotary speed encoder 506 monitor the forward speed of the machine in real time and transmit the speed information to the control box 2. The control box 2 adjusts the rotational speed of the DC motor 903 of the active straw-pushing device 9 according to the speed information to ensure that the straw-pushing wheel 906 is always in the best working state. The straw-pushing wheel 906 of the active straw-pushing device 9 rotates driven by the DC motor 903 to push the straw on the ground surface to prevent it from winding around the weeding device. The serrated straw-pushing knives 904 on the straw-pushing wheel 906 effectively cut and push the straw to ensure that the straw does not block the weeding machine. At the same time, the weeding device A14 and the weeding device B10 are respectively on both sides of the combined weeding monomer 6, and the wing-shaped weeding shovels 105 are used to remove the weeds between the rows. When the weeding device is weeding, the seedling protection wheels 1105 of the seedling protection device A13 and the seedling protection device B11 are closely attached to the wing-shaped weeding shovels 105 to isolate and protect the soybean seedlings and the wing-shaped weeding shovels through the seedling protection wheels to prevent the soil and straw from damaging the soybean seedlings. Finally, the grass-soil separation device A15 and the grass-soil separation device B12 separate the shoveled grass and soil through the rotating finger wheels 1205 to prevent the weeds from taking root and growing again. Embodiment

[0030] Based on Embodiment 1, the same parts as those in Embodiment 1 will not be described in detail, and the differences are as follows: As Figure 8 shown, a depth-limiting wheel adjusting device 7 is provided on the chain drive housing 901 in this embodiment for adjusting the height of the depth-limiting wheel 903.

[0031] As Figure 8 shown, the depth-limiting wheel adjusting device 7 mainly includes an H-shaped fixing frame 707, a hexagonal long pin 701, a perforated support plate 706, a perforated adjusting screw rod 702, hexagonal bolts, etc. The depth-limiting wheel 703 is fixed on the H-shaped fixing frame 707 through a hexagonal bolt A705. The other end of the H-shaped fixing frame 707 is fixed on the chain drive housing 901 through a hexagonal bolt B708. A perforated support plate 706 is rotatably installed on the H-shaped fixing frame 707. The tail end of the perforated adjusting screw rod 702 passes through its hole, and the tail end is limited and fixed through a hexagonal nut 704. A hexagonal long pin 701 is installed on the front side of the chain drive housing 901, and the upper end of the perforated adjusting screw rod 702 is fixed on the chain drive housing 901 through the hexagonal long pin 701. By adjusting the insertion depth of the perforated adjusting screw rod 702 in the hole of the perforated support plate 706 and locking its position through the hexagonal nut 704, the height between the depth-limiting wheel 703 and the chain drive housing 901 can be adjusted, and then the ground clearance of the straw-pushing wheel and the penetration depth of the wing-shaped weeding shovel can be adjusted, so as to adjust the working height of the entire combined weeding monomer 6. Embodiment

[0032] Based on Embodiment 1, the same parts as those in Embodiment 1 will not be described again, and the differences are as follows: As Figure 7 shown, a U-bolt 501 is installed on the rear crossbar of the three-point suspension frame 3. The ground wheel assembly 5 includes a ground wheel frame sleeve 502 vertically fixed to the rear end of the three-point suspension frame 3 through the U-bolt 501. A ground wheel frame 504 is longitudinally and slidably sleeved at the lower end of the ground wheel frame sleeve 502. A ground wheel 505 is rotatably sleeved in the ground wheel frame sleeve 502 through a wheel axle. One end of the wheel axle is equipped with a rotary speed measuring encoder 506 for detecting the rotational forward speed of the ground wheel 505. Two adjusting bolts 503 are installed on the ground wheel frame sleeve 502 for adjusting and locking the extended length of the ground wheel frame sleeve 502, thereby adjusting the depth of the ground wheel 505. Embodiment

[0033] Based on Embodiment 1, the same parts as those in Embodiment 1 will not be described again, and the differences are as follows: During the process of rotating and straw-pushing by the straw-pushing wheel 906 of the active straw-pushing device, straw may be wound around the serrated structure straw-pushing knife 904. To solve this problem, an anti-blocking device is also provided on the active straw-pushing device, such as Figure 6 shown, a straw anti-blocking scraper 905 and an air flow conduit 910 are arranged above the straw-pushing wheel 906. The straw anti-blocking scraper 905 is vertically fixed to the chain drive housing 901 through small screws 907 and is located above the straw-pushing wheel 906. The air flow conduit 910 is installed on the chain drive housing 901, and the air blowing port faces the active straw-pushing device 9; During operation, the straw anti-blocking scraper 905 can scrape off the straw wound around the straw-pushing wheel 906. At the same time, the air flow conduit 910 can be connected to the air supply pipeline on the tractor to blow air towards the straw-pushing wheel 906 to blow away the scraped-off straw, and the problems of straw blockage and winding are solved by the combination of air flow blowing and scraper cleaning.

[0034] The above are only the preferred embodiments of the present invention, which do not limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A soybean inter-row active anti-blocking and driving combined weeder, comprising a three-point suspension frame (3), a plurality of combined weeding units (6) being suspended at the rear end of the three-point suspension frame (3), and two ground wheel assemblies (5) being installed on the left and right, characterized in that: The combined weeding unit (6) is composed of a four-rod profiling device (16), a mounting frame (8), an active straw removing device (9), a weeding device, a seedling protecting device and a grass-soil separation device. The mounting frame (8) is connected to the three-point suspension frame (3) via the four-rod profiling device (16). The weeding device, the seedling protecting device and the grass-soil separation device each have two groups, which are all installed on both sides of the combined weeding unit (6) via the mounting frame. The mounting frame (8) is provided with depth limiting wheels (903) on the left and right sides, as well as a depth limiting wheel adjusting device (7) for adjusting the height of the depth limiting wheels (903). The mounting frame (8) is welded by two parallel steel pipe fixing plates (802), a rectangular steel pipe and a hollow square pipe. The mounting frame (8) is fixed to the rear fixing plate (1606) of the four-rod profiling device (16) through the hollow rectangular pipe (806) at the front end of the steel pipe fixing plate (802). The weeding device is fixed on the rectangular steel pipe and includes a wing-shaped weeding shovel installed through an S-shaped spring handle, and the wing-shaped weeding shovel is used to cut weeds. The seedling protection device is fixed on the hollow square pipe and includes a seedling protection wheel installed through a swing arm, and the seedling protection wheel is closely attached to the hollow square pipe. The outer side of the wing-shaped weeding shovel is used to separate the wing-shaped weeding shovel and the bean seedlings. The active straw-pushing device (9) comprises a chain drive housing (901) and a straw-pushing wheel (906). The chain drive housing (901) is vertically clamped between two steel pipe fixing plates (802). The straw-pushing wheel (906) is mounted on the chain drive housing (901) and is used to push away the straw. The grass-soil separation device is fixed to the rearmost end of the mounting frame through a square tube with ears at the rear end of the steel pipe fixing plate (802), and comprises a finger wheel (1205) and is used to separate soil and weeds.

2. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: The four-bar profiling device (16) comprises a lower connecting rod (1605), an upper connecting rod (1601), a front fixing plate (1602), and a rear fixing plate (1606), the ends of which are hinged via a long pin (1607) to form a parallelogram connecting rod mechanism, and also comprises an adjusting handle (1603), the lower connecting rod (1605) being connected to a downward pressure spring (1604), the other end of the downward pressure spring (1604) being connected to the adjusting handle (1603), a plurality of grooves being arranged on the upper connecting rod (1601), the adjusting handle (1603) being clamped on the grooves of the upper connecting rod (1601), and the operating depth of the device can be adjusted by adjusting the groove positions corresponding to the adjusting handle (1603).

3. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: The active straw-pulling device (9) is composed of a DC motor (903), a chain drive housing (901), a transmission chain (902) and a straw-pulling wheel (906); the chain drive housing (901) is vertically welded between two steel pipe fixing plates (802) of a mounting frame (8); the DC motor (902) is mounted on the top of the chain drive housing (901); a hexagonal shaft (909) is rotatably mounted on the bottom of the chain drive housing (901); an output shaft of the DC motor (902) is transmission-connected to the hexagonal shaft (909) via the transmission chain (902); a straw-pulling wheel (906) is fixedly mounted on both ends of the hexagonal shaft (909); and a plurality of sawtooth-shaped structured pulling knives (904) are welded and fixed on the straw-pulling wheel (906).

4. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: Two groups of weeding devices are located on both sides of the combined weeding unit (6) and are arranged alternately. The weeding devices are composed of an L-shaped steel (101), a hexagon socket bolt (102), an S-shaped spring handle (103), and a wing-shaped weeding shovel (105). The top end of the S-shaped spring handle (103) passes through a flat hole of the L-shaped steel (101) and is fixed to a rectangular steel pipe by means of the hexagon socket bolt (102). The bottom end of the S-shaped spring handle (103) is fixed with a wing-shaped weeding shovel (105).

5. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: Two sets of seedling protection devices are located on both sides of the combined weeding unit (6), and the seedling protection devices are composed of a square sleeve (1102), a seedling protection wheel (1105), a swing arm (1106) and a swing arm fixing pin (1107). The square sleeve (1102) is fixed to the hollow square tubes on both sides of the mounting frame (8) by means of a fixing bolt (1101), and one end of the swing arm (1106) is installed with the seedling protection wheel (1105), and the other end is fixed to the square sleeve (1102) by means of a swing arm fixing pin (1107). 02), the seedling protection wheel (1105) is located outside the weeding device and is in close contact with the wing-shaped weeding shovel (105), a tension spring (1104) is connected to the square sleeve (1102) and the swing arm (1106), one end of the tension spring (1104) is connected to the square sleeve (1102), and the other end is connected to the swing arm (1106), and under the action of the tension spring (1104), the swing arm (1106) is in close contact with the adjustment pin (1108) in the swing arm fixing pin (1107).

6. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: Two groups of grass-soil separation devices are located on both sides of the rear end of the combined weeding unit (6). The grass-soil separation devices are composed of a tensioning spring (1201), a telescopic sleeve (1202) and a thumb wheel (1205). A square tube with ears (801) and a square tube with ears (808) are welded to the upper and lower ends of the rear end of the steel tube fixing plate (802). The front end of the telescopic sleeve (1202) is fixed to the end of the square tube with ears (801) by a pin, and a thumb wheel (1205) is installed at the rear end. A tensioning spring (1201) is connected between the square tube with ears (808) and the telescopic sleeve (1202). One end of the tensioning spring (1201) is connected to the end of the square tube with ears (808), and the other end is connected to the telescopic sleeve (1202).

7. The soybean inter-row active anti-blocking and driving combined weeder according to claim 1, characterized in that: The depth limiting wheel adjustment device (7) comprises an H-shaped fixing frame (707) and a hole-adjusting screw rod (702); the depth limiting wheel (703) is mounted on the H-shaped fixing frame (707); the other end of the H-shaped fixing frame (707) is mounted on the chain drive housing (901); a hole-adjusting support plate (706) is mounted on the H-shaped fixing frame (707); the tail end of the hole-adjusting screw rod (702) passes through the hole thereof, and the tail end is fixed in position by a hexagonal nut (704); a hexagonal long pin (701) is mounted on the front side of the chain drive housing (901); and the upper end of the hole-adjusting screw rod (702) is fixed to the chain drive housing (901) by the hexagonal long pin (701).

8. The soybean inter-row active anti-blocking and driving combined weeder according to claim 3, characterized in that: A straw anti-blocking scraper (905) and an airflow duct (910) are arranged above the active straw-pulling device (9); the straw anti-blocking scraper (905) is vertically fixed to the chain drive housing (901) by means of small screws (907) and is located above the straw-pulling wheel (906); the airflow duct (910) is mounted on the chain drive housing (901) with the air outlet facing the active straw-pulling device (9).

9. The soybean inter-row active anti-blocking and driving combined weeder according to claim 5, characterized in that: The swing arm fixing pin (1107) is provided with a plurality of adjustment holes, and the adjustment pin (1108) is inserted into the adjustment hole. By adjusting the hole position of the adjustment pin (1108) on the swing arm fixing pin (1107), the soil penetration depth of the seedling protection wheel (1105) can be adjusted.

10. The soybean inter-row active anti-blocking and driving combined weeder according to claim 6, characterized in that: The inner tube (1204) is slidably nested in the rear end of the telescopic sleeve (1202), the thumb wheel (1205) is mounted on the rear end of the inner tube (1204), and a set screw (1203) is mounted on the telescopic sleeve (1202) at a position close to the inner tube (1204), the set screw (1203) being used to adjust the extension length of the inner tube (1204) in the telescopic sleeve (1202).

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