A combined type weeding machine for soybean row active anti-blocking driving and pushing

Abstract

The present application relates to the field of agricultural machinery technology, and more particularly to a soybean row active anti-blocking driving and pulling combined weeder, comprising a three-point suspension frame, a plurality of combined weeding monomers suspended from the rear end of the three-point suspension frame, and two ground wheel assemblies installed on the left and right, wherein the combined weeding monomer is composed of a four-bar profiling device, a mounting rack, an active straw driving device, a weeding device, a seedling protection device and a grass-soil separation device. The present application provides a suspension traction type weeder integrating row weeding, straw disturbance and throwing, and grass-soil separation, which realizes efficient, low-consumption and environmentally-friendly mechanized weeding under straw covering conditions through multi-system collaborative innovation, so as to improve the weeding efficiency under the condition of straw covering, water and entropy preservation, and has significant advantages in efficient weeding, crop protection, strong adaptability, anti-blocking design, precise control, environmental benefits and economic benefits, etc., and provides an advanced and reliable mechanical solution for soybean field management.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a combined weeding machine for soybean rows with active anti-blocking and weeding capabilities. Background Technology

[0002] The Huang-Huai-Hai Plain, my country's second-largest soybean producing area, widely adopts a two-crop-a-year rotation pattern of winter wheat and summer soybean. Returning straw to the field is an important agricultural measure in this region, effectively increasing soil organic matter content and reducing water evaporation, thereby significantly improving soybean water use efficiency and yield.

[0003] However, the large amount of straw residue left after wheat straw is returned to the field (typically reaching 3-5 tons / hectare) severely hinders subsequent mechanized weeding operations in soybean fields. Therefore, chemical weeding remains the main method of weed control in the field. Although chemical weeding is highly efficient, its environmental and health hazards cannot be ignored. To reduce dependence on chemical agents, the agricultural sector is actively exploring more environmentally friendly alternatives, among which mechanical weeding technology has attracted much attention due to its sustainability and low environmental impact. Currently, there are few weeding machines on the market suitable for conservation tillage; most are rotary hoes or toothed rakes. Furthermore, the blades of these machines easily become entangled with surface straw during weeding operations, leading to equipment blockage and reduced efficiency. In addition, existing weeding machines struggle to effectively separate weeds from the soil, and residual weed roots easily adhere to the soil and regenerate.

[0004] Therefore, considering the straw coverage situation of no-till operations and the needs of mechanical weeding operations during the seedling stage in the Huang-Huai-Hai region, a combined weeding machine that can achieve straw disturbance and spreading, airflow-assisted anti-blocking, and grass-soil separation is designed. Summary of the Invention

[0005] To address the aforementioned deficiencies and problems, this invention provides a suspended traction weeder that integrates inter-row weeding, straw disturbance and spreading, and grass-soil separation. Through multi-system collaborative innovation, it achieves efficient, low-consumption, and environmentally friendly mechanized weeding under straw mulch conditions, thereby improving weeding efficiency while conserving water and entropy under straw mulch.

[0006] The solution adopted by this invention to solve its technical problem is: a soybean row active anti-blocking and weeding combined machine, including a three-point suspension frame, with multiple combined weeding units suspended at the rear end of the three-point suspension frame, and two ground wheel assemblies installed on the left and right. Each combined weeding unit consists of a four-bar contouring 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-bar contouring device. There are two sets of weeding devices, seedling protection devices, and grass-soil separation devices, all of which are installed on both sides of the combined weeding unit through the mounting frame. Depth-limiting wheels are installed on the left and right sides of the mounting frame, as well as depth-limiting wheel adjustment devices for adjusting the height of the depth-limiting wheels.

[0007] The mounting frame is welded from two parallel steel pipe fixing plates, rectangular steel pipes, and hollow square tubes. The mounting frame is fixed to the rear fixing plate of the four-bar conforming device via the hollow rectangular tube 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 mounted via 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 tube and includes a seedling protection wheel mounted via a swing arm. The seedling protection wheel is close to the outside of the wing-shaped weeding shovel to isolate the wing-shaped weeding shovel from the bean seedlings. The active straw-removing device includes a chain drive housing and a straw-removing wheel. The chain drive housing is vertically clamped between the two steel pipe fixing plates, and the straw-removing wheel is mounted on the chain drive housing to remove the straw. The grass-soil separation device is fixed to the rear end of the mounting frame via a square tube with ears at the rear end of the steel pipe fixing plate and includes a finger wheel to separate soil and weeds.

[0008] Furthermore, the four-bar linkage includes a lower connecting rod, an upper connecting rod, a front fixed plate, and a rear fixed plate. The ends of the four rods are hinged together by long pins to form a parallelogram linkage mechanism. The linkage also includes an adjustment handle. A compression spring is connected to the lower connecting rod, and the other end of the compression spring is connected to the adjustment handle. Multiple grooves are provided on the upper connecting rod. The adjustment handle is engaged in the grooves of the upper connecting rod. The working depth of the device can be adjusted by adjusting the position of the groove corresponding to the adjustment handle.

[0009] Furthermore, the active straw-picking device consists of a DC motor, a chain drive housing, a drive chain, and a straw-picking 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, and 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 the drive chain. The straw-picking wheel is fixedly mounted on both ends of the hexagonal shaft, and multiple serrated blades are welded and fixed on the straw-picking wheel.

[0010] Furthermore, the two sets of weeding devices are located on both sides of the combined weeding unit and are arranged alternately. The weeding device consists of an L-shaped steel, a hexagonal socket head cap screw, an S-shaped spring handle, and a wing-shaped weeding shovel. The top of the S-shaped spring handle passes through the flat hole of the L-shaped steel and is fixed to the rectangular steel pipe by the hexagonal socket head cap screw. The bottom of the S-shaped spring handle is fixed with a wing-shaped weeding shovel.

[0011] Furthermore, two sets of seedling protection devices are located on both sides of the combined weeding unit. The seedling protection device consists of a square sleeve, a seedling protection wheel, a swing arm, and a swing arm fixing pin. The square sleeve is fixed to the hollow square tubes on both sides of the mounting frame by set bolts. One end of the swing arm is equipped with a seedling protection wheel, and the other end is fixed to the square sleeve by the 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 to 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 inside the swing arm fixing pin.

[0012] Furthermore, two sets of weed-soil separation devices are located on both sides of the tail end of the combined weeding unit. The weed-soil separation device consists of a tension spring, a telescopic sleeve, and a dial wheel. A square tube A with ears and a square tube B with ears are welded to the rear end of the steel pipe fixing plate. The front end of the telescopic sleeve is fixed to the end of the square tube A with ears by a pin. A dial wheel is installed at the tail end. A tension spring is connected between the square tube B with ears and the telescopic sleeve. One end of the tension spring is connected to the end of the square tube B with ears, and the other end is connected to the telescopic sleeve.

[0013] Furthermore, the depth limiting wheel adjustment device includes an H-shaped fixing frame and a perforated adjusting screw. The depth limiting wheel is mounted on the H-shaped fixing frame, and the other end of the H-shaped fixing frame is mounted on the chain drive housing. A perforated support plate is mounted on the H-shaped fixing frame, and the tail end of the perforated adjusting screw passes through its hole and is fixed by a hexagonal nut. A hexagonal long pin is mounted on the front side of the chain drive housing, and the upper end of the perforated adjusting screw is fixed to the chain drive housing by the hexagonal long pin.

[0014] Furthermore, an anti-clogging scraper and an airflow duct are provided above the active straw-pulling device. The anti-clogging scraper is vertically fixed to the chain drive housing by small screws and is located above the straw-pulling wheel. The airflow duct is installed on the chain drive housing and the air outlet faces the active straw-pulling device.

[0015] Furthermore, the swing arm fixing pin is provided with multiple adjustment holes, and the adjustment pin is inserted into the adjustment holes. By adjusting the position of the adjustment pin in the hole on the swing arm fixing pin, the soil penetration depth of the seedling protection wheel can be adjusted.

[0016] Furthermore, the telescopic sleeve has an inner tube slidably nested at its tail end, a 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.

[0017] The beneficial effects of this invention are:

[0018] Highly efficient anti-clogging and straw handling capabilities: Through the serrated blades of the active straw-pulling device, the straw anti-clogging scraper and airflow duct work together to achieve rapid straw removal and anti-entanglement, significantly reducing the clogging rate and ensuring continuous and efficient operation of the weeder in the field; The speed of the straw-pulling wheel driven by the DC motor is intelligently matched with the forward speed of the implement, and combined with the real-time feedback of the GPS speed sensor and the ground wheel encoder, the operating efficiency is dynamically optimized.

[0019] Adaptive to terrain and precise operation: The four-bar contouring device automatically adapts to ground undulations through the parallelogram linkage mechanism and the elastic compensation of the compression spring, maintaining a constant soil penetration depth of the weeding shovel and avoiding missed weeding or damage to seedlings; the depth limiting wheel adjustment device and the ground wheel assembly have multi-level adjustment functions, supporting flexible adaptation to different row spacing, soil conditions and working depths, improving the versatility of the machine.

[0020] Optimized synergy between seedling protection and weeding: The seedling protection device, through the linkage design of the swing arm and tension spring, ensures that the seedling protection wheel is always in close contact with the outside of the wing-shaped weeding shovel, effectively blocking splashed soil and straw, protecting bean seedlings from mechanical damage, and significantly improving the success rate of seedling protection; The S-shaped spring handle of the weeding device provides elastic cushioning, reducing the risk of damage to crop roots from hard impacts, while the arc-shaped blade of the wing-shaped weeding shovel can accurately cut weed roots, resulting in a high weeding rate;

[0021] Highly efficient and eco-friendly separation of weeds and soil: The weed-soil separation device uses a rotating and tensioning spring to quickly separate the shoveled weeds from the soil, reducing the regeneration rate of residual weed roots and reducing the need for subsequent weeding; the fully mechanized operation mode replaces chemical weeding, significantly reducing pesticide use and meeting the requirements of green agriculture and sustainable development.

[0022] In summary, the soybean inter-row active anti-blocking and weeding combined machine of the present invention has significant advantages in terms of efficient weeding, crop protection, strong adaptability, anti-blocking design, precise control, environmental benefits, and economic benefits, providing an advanced and reliable mechanical solution for soybean field management. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a top view of the structure of the present invention;

[0025] Figure 3This is a side view of the structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the combined weed-killing unit of the present invention;

[0027] Figure 5 This is a schematic diagram of the parallel four-bar contouring device of the present invention;

[0028] Figure 6 This is a schematic diagram of the mounting frame of the present invention;

[0029] Figure 7 This is a schematic diagram of the ground wheel of the present invention;

[0030] Figure 8 This is a schematic diagram of the active straw-pulling device of the present invention;

[0031] Figure 9 This is a schematic diagram of the straw-picking wheel of the present invention;

[0032] Figure 10 This is a schematic diagram of the weeding device of the present invention;

[0033] Figure 11 This is a schematic diagram of the seedling protection device of the present invention;

[0034] Figure 12 This is a schematic diagram of the grass-soil separation device of the present invention.

[0035] In the picture:

[0036] 1. GPS speedometer; 2. Control box; 3. Three-point suspension frame; 4. Battery box; 5. Ground wheel assembly; 6. Combined weeding unit; 7. Depth limiting wheel adjustment device; 8. Mounting frame; 9. Active straw removal device; 10. Weeding device B; 11. Seedling protection device B; 12. Grass-soil separation device B; 13. Seedling protection device A; 14. Weeding device A; 15. Grass-soil separation device A; 16. Four-bar contouring device;

[0037] 101. L-shaped steel; 102. Socket head cap screw; 103. S-shaped spring handle; 104. Socket head countersunk screw; 105. Wing-shaped weeding shovel;

[0038] 501. U-bolt; 502. Ground wheel frame sleeve; 503. Adjusting bolt; 504. Ground wheel frame; 505. Ground wheel; 506. Rotary speed encoder;

[0039] 701. Hexagonal long pin; 702. Adjusting screw with hole; 703. Depth limiting wheel; 704. Hexagonal nut; 705. Hexagonal bolt A; 706. Support plate with hole; 707. H-type fixing bracket; 708. Hexagonal bolt B;

[0040] 801. Square tube A with lugs; 802. Steel pipe fixing plate; 803. Rectangular steel tube A; 804. Rectangular steel tube B; 805. Hollow square tube A; 806. Hollow rectangular tube; 807. Hollow square tube B; 808. Square tube B with lugs;

[0041] 901. Chain drive housing; 902. Drive chain; 903. DC motor; 904. Serrated straw scraper; 905. Straw anti-clogging scraper; 906. Straw scraper wheel; 907. Small bolt; 908. Triangular bearing housing; 909. Hexagonal shaft; 910. Airflow duct;

[0042] 1101. Set bolt; 1102. Square sleeve; 1103. Short pin; 1104. Tension spring; 1105. Seedling protection wheel; 1106. Swing arm; 1107. Swing arm fixing pin; 1108. Adjusting pin;

[0043] 1201. Tension spring; 1202. Telescopic sleeve; 1203. Set screw; 1204. Inner tube; 1205. Dial wheel;

[0044] 1601. Upper connecting rod; 1602. Front fixing plate; 1603. Adjusting handle; 1604. Lower compression spring; 1605. Lower connecting rod; 1606. Rear fixing plate; 1607. Long pin. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] Please see Figure 1-12 This invention provides a technical solution for a suspended traction weeder that integrates inter-row weeding, straw disturbance and spreading, and grass-soil separation. Example

[0047] according to Figure 1-3 As shown, a soybean row active anti-blocking and weeding combined weeder mainly includes a three-point suspension frame 3 and a combined weeding unit 6. A control box 2, a GPS speed sensor 1, and a battery box 4 are installed and fixed on the three-point suspension frame 3. Two ground wheel assemblies 5 are fixed to 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 on the rear of the three-point suspension frame 3. In actual application, multiple sets of combined weeding units 6 can be set on the three-point suspension frame 3 according to the number of rows in the farmland.

[0048] The combined weeding unit 6 mainly consists of a four-bar contouring device 16, a mounting frame 8, an active straw-pulling device 9, a weeding device, a seedling protection device, and a grass-soil separation device. Two of the weeding device, seedling protection device, and grass-soil separation device are installed on each combined weeding unit 6 and distributed on both sides of the combined weeding unit 6. Limited depth wheels 903 are installed on the left and right sides of the mounting frame 8, which, together with the ground wheel assembly 5, enable the weeder to move stably in the field.

[0049] like Figure 5 As shown, the four-bar contouring device 16 includes two sets of lower connecting rods 1605, upper connecting rods 1601, a front fixing plate 1602, and a rear fixing plate 1606. The ends of the four are hinged by long pins 1607 to form two sets of parallelogram linkage mechanisms, and the two sets of parallelogram linkage mechanisms are connected by a crossbar. It also includes an adjusting handle 1603. A downward pressure spring 1604 is fixed on the crossbar of the lower connecting rod 1605. The other end of the downward pressure spring 1604 is connected to the adjusting handle 1603. Multiple grooves are provided on the upper connecting rod 1601. The adjusting handle 1603 is locked in the groove of the upper connecting rod 1601. In actual operation, the depth limiting wheel 703 can be pressed tightly against the ground by adjusting the position of the groove corresponding to the adjusting handle 1603 to achieve the contouring requirement. When the ground is uneven, the contouring device automatically adapts to the terrain changes to ensure that the working depth of the weeding shovel 105 is consistent and to avoid damaging seedlings or missing weeds.

[0050] The structure of mounting bracket 8 is as follows Figure 6As shown, it is mainly composed of two parallel steel pipe fixing plates 802, rectangular steel pipe and hollow square tube welded together. The active straw pulling device is fixed in the middle of the two steel plates. The weeding device is fixed on the rectangular steel pipe by L-shaped steel plate and bolts. The seedling protection device is fixed on the hollow square tubes on both sides by square sleeve and set bolts. The grass and soil separation device is fixed at the rear end of the hanging frame. Specifically, a hollow rectangular tube 806 is welded and fixed to the front end of the steel pipe fixing plate 802. The mounting frame 8 is fixedly welded to the rear fixing plate 1606 of the four-bar conforming device 16 through the hollow rectangular tube 806. A square tube A801 ​​and a square tube B808 with ears are welded and fixed to the rear end of the steel pipe fixing plate 802. The square tubes A801 ​​and B808 with ears are arranged parallel vertically. Rectangular steel tubes A803, B804, A805, and B807 are vertically welded and fixed through the steel pipe fixing plate 802. The positions of the rectangular steel tubes and the hollow square tubes are determined according to the positions of the weeding and seedling protection devices and the weeding devices of the weeder. Reasonable layout; Seedling protection device A13 is fixed to hollow square tube A805 by square sleeve 1102 and set bolt 1101, and seedling protection device B11 is fixed to hollow square tube B807 in the same way; Weeding device A14 is fixed to rectangular steel tube A803 by L-shaped steel 101 and hexagonal bolt 102, and weeding device B10 is fixed to rectangular steel tube B804 in the same way; the chain drive housing 901 of active straw pulling device 9 is vertically clamped between two steel pipe fixing plates 802 and fixed by welding; grass and soil separation device A15 and grass and soil separation device B12 are fixed to both ends of eared square tube A801 ​​by pins.

[0051] The structure of the active straw-reeling device 9 is as follows: Figure 8 As shown, it mainly consists of a DC motor 903, a chain drive housing 901, a transmission chain 902, a straw anti-clogging scraper 905, a straw-pulling wheel 906, and serrated blades 904. The DC motor 902 is installed on the top side of the chain drive housing 901 by fixing bolts. A hexagonal shaft 909 is vertically mounted on the bottom of the chain drive housing 901 via a triangular bearing seat 908. The output shaft of the DC motor 902 is connected to the hexagonal shaft 909 via the transmission chain 902, and the transmission chain 902 is set inside the chain drive housing 901. The straw-pulling wheel 906 is fixedly mounted on both ends of the hexagonal shaft 909. The straw-pulling wheel 906 is driven by the DC motor 902 through the transmission chain 902. Multiple serrated blades 904 are welded and fixed on the straw-pulling wheel 906. When the straw-pulling wheel 906 rotates, the serrated blades 904 on the straw-pulling wheel pull the straw off the ground from between the rows.

[0052] The DC motor 902 is powered by the battery box 4 fixed on the three-point suspension frame 3. The speed of the DC motor 902 is adjusted by the control box 2. The control box 2 is equipped with a GPS speed measuring device. The ground wheel under the three-point suspension frame 3 is also equipped with a rotary speed encoder. The control system obtains the machine's forward speed by acquiring the speed information from the GPS and the encoder, and can then adjust the speed of the DC motor 902 in real time, so that the straw-picking wheel 906 is always at the optimal speed during operation.

[0053] Both weeding devices A14 and B10 are composed of L-shaped steel 101, hex socket head cap screws 102, S-shaped spring handles 103, countersunk hex socket head cap screws 104, and wing-shaped weeding shovels 105. Here, we will take weeding device A14 as an example, as detailed below... Figure 10 As shown, a flat hole is provided on the L-shaped steel 101, and the top of the S-shaped spring handle 103 passes through the flat hole of the L-shaped steel 101. The two cooperate with each other and are fixed to the rectangular steel pipe A803 of the mounting frame 8 by the internal hex bolt 102. The wing-shaped weeding shovel 105 is fixed to the bottom end of the S-shaped spring handle 103 by the internal hex countersunk screw 104. The weeding device B10 is fixed to the rectangular steel pipe B804 in the same way. The weeding device A14 and the weeding device B10 are located on both sides of the combined weeding unit 6. Both are behind the straw-removing wheel and are arranged in an alternating manner. When the weeding machine moves forward, the weeding shovel enters the soil, cuts the weed roots with the arc-shaped blade, and pulls up the weeds by the roots with the help of the forward movement of the machine, removing the weeds between the rows.

[0054] Two seedling protection devices are also provided on each modular weeding unit 6, namely seedling protection device A13 and seedling protection device B11. Both seedling protection devices A13 and B11 are composed of a set bolt 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 located on both sides of the modular weeding unit 6, as detailed below. Figure 11As shown, the square sleeve 1102 is fixed to the hollow square tubes on both sides of the mounting frame 8 by set bolts 1101. A swing arm fixing pin 1107 is welded and fixed to the square sleeve 1102. The swing arm fixing pin 1107 has multiple adjustment holes, and an adjustment pin 1108 is inserted into each hole. A 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 to the square sleeve 1102 by the swing arm fixing pin 1107. 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 fixed to the square sleeve 1102 by a pin 1103, and the other end is fixed to the square sleeve 1102 by a pin 1104. Nail 1103 is fixed to swing arm 1106. Under the elastic pull of tension spring 1104, swing arm 1106 will closely adhere to and abut against adjusting pin 1108. Adjusting pin 1108 limits the position and tilt angle of swing arm 1106, thereby limiting the height of seedling protection wheel 1105. Adjusting the hole position of adjusting pin 1108 on square sleeve 1102 can adjust the position and tilt angle of swing arm 1106, thereby adjusting the soil penetration depth of seedling protection wheel 1105, so that seedling protection wheel 1105 can always closely adhere to wing-shaped weeding shovel 105 at different working depths. Each seedling protection device corresponds to a weeding device. The seedling protection wheel is on the outside of wing-shaped weeding shovel, blocking splashed soil and straw, and preventing soil and straw lifted by wing-shaped weeding shovel from damaging bean seedlings.

[0055] Both the weed-soil separation device A15 and the weed-soil separation device B12 consist of a tension spring 1201, a telescopic sleeve 1202, a set screw 1203, an inner tube 1204, and a dial wheel 1205, and are located on both sides of the tail end of the combined weeding unit 6. Specifically, as follows... Figure 12 As shown, the front end of the telescopic sleeve 1202 is fixed to the end of the eared square tube A801 ​​of the mounting frame 8 by a pin. The rear end of the telescopic sleeve 1202 is slidably nested with an inner tube 1204. A dial wheel 1205 is installed at the rear end of the inner tube 1204. A small motor for driving its rotation is installed on the dial wheel 1205. The dial wheel 1205 separates the grass and soil scooped up by the front wing-shaped weeding shovel by rolling, preventing weeds from taking root and growing again. The telescopic sleeve 1202 is also attached to the... A set screw 1203 is installed near the inner tube 1204. The extension length of the inner tube 1204 in the telescopic sleeve 1202 can be adjusted by the set screw 1203, thereby adjusting the position of the dial 1205. A tension spring 1201 is connected between the eared square tube B808 and the telescopic sleeve 1202. One end of the tension spring 1201 is fixed to the end of the eared square tube B808 by a pin, and the other end is fixed to the telescopic sleeve 1202 by a pin.

[0056] In practical use, this invention provides a soybean row-mounted active anti-blocking and weeding combined machine. The weeder is towed in the field by a tractor or other traction device. A GPS speedometer 1 and a rotary speed encoder 506 monitor the machine's forward speed in real time and transmit the speed information to the control box 2. The control box 2 adjusts the speed of the DC motor 903 of the active straw-removing device 9 according to the speed information to ensure that the straw-removing wheel 906 is always in the optimal working state. The straw-removing wheel 906 of the active straw-removing device 9 rotates under the drive of the DC motor 903, moving the straw on the ground to prevent it from getting tangled on the weeding device. The serrated blades on the straw-removing wheel 906... 904 effectively cuts and moves the straw, ensuring that the straw does not clog the weeder. At the same time, weeding devices A14 and B10 are located on both sides of the combined weeding unit 6, respectively, and use wing-shaped weeding shovels 105 to remove weeds between rows. When weeding, the seedling protection devices A13 and B11 have their seedling protection wheels 1105 close to the wing-shaped weeding shovels 105, which isolate and protect the bean seedlings from the wing-shaped weeding shovels, preventing soil and straw from damaging the bean seedlings. Finally, grass and soil separation devices A15 and B12 separate the shoveled grass and soil through rotating finger wheels 1205, preventing weeds from taking root and growing again. Example

[0057] Based on Example 1, the similarities between this example and Example 1 will not be repeated here. The differences are as follows: Figure 8 As shown, in this embodiment, a depth limiting wheel adjustment device 7 is provided on the chain drive housing 901 to adjust the height of the depth limiting wheel 903.

[0058] like Figure 8 As shown, the depth limiting wheel adjustment device 7 mainly consists of an H-shaped fixing frame 707, a hexagonal long pin 701, a perforated support plate 706, a perforated adjusting screw 702, hexagonal bolts, etc. The depth limiting wheel 703 is fixed to the H-type fixing frame 707 by hex bolt A705. The other end of the H-type fixing frame 707 is fixed to the chain drive housing 901 by hex bolt B708. A perforated support plate 706 is rotatably mounted on the H-type fixing frame 707. The tail end of the perforated adjusting screw 702 passes through its hole and is limited and fixed by a hex nut 704. A hexagonal long pin 701 is installed on the front side of the chain drive housing 901. The upper end of the perforated adjusting screw 702 is fixed to the chain drive housing 901 by the hexagonal long pin 701. By adjusting the insertion depth of the perforated adjusting screw 702 in the hole of the perforated support plate 706 and locking its position by the hex nut 704, the height of the depth limiting wheel 703 and the chain drive housing 901 can be adjusted, thereby adjusting the height of the straw-pulling wheel off the ground and the depth of the wing-shaped weeding shovel into the soil, thus adjusting the working height of the entire combined weeding unit 6. Example

[0059] Based on Example 1, the similarities between this example and Example 1 will not be repeated here. The differences are as follows:

[0060] like Figure 7 As 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 that is vertically fixed to the rear end of the three-point suspension frame 3 by the U-bolt 501. A ground wheel frame 504 is longitudinally slidably fitted on the lower end of the ground wheel frame sleeve 502. A ground wheel 505 is rotatably fitted inside the ground wheel frame sleeve 502 via a wheel axle. A rotary speed encoder 506 is installed at one end of the wheel axle to detect the rotational forward speed of the ground wheel 505. Two adjusting bolts 503 are installed on the ground wheel frame sleeve 502 to adjust and lock the extension length of the ground wheel frame sleeve 502, thereby adjusting the depth of the ground wheel 505. Example

[0061] Based on Example 1, the similarities between this example and Example 1 will not be repeated here. The differences are as follows:

[0062] During the rotation of the active straw-picking device, the serrated blade 904 may become entangled with straw. To address this issue, the active straw-picking device is also equipped with an anti-clogging device, such as... Figure 6 As shown, a straw anti-blocking scraper 905 and an airflow duct 910 are provided above the straw-pulling wheel 906. The straw anti-blocking scraper 905 is vertically fixed to the chain drive housing 901 by a small screw 907 and is located above the straw-pulling wheel 906. The airflow duct 910 is installed on the chain drive housing 901 and the air blowing port faces the active straw-pulling device 9.

[0063] During operation, the straw anti-clogging scraper 905 can scrape off the straw wrapped around the straw-pulling wheel 906. At the same time, the airflow duct 910 can be connected to the air supply line on the tractor to blow air in the direction of the straw-pulling wheel 906 to blow away the scraped straw. The problem of straw clogging and entanglement is solved by combining airflow blowing and scraper cleaning.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A soybean row-mounted active anti-blocking and weeding combined weeder, comprising a three-point suspension frame (3), wherein multiple combined weeding units (6) are suspended at the rear end of the three-point suspension frame (3), and two ground wheel assemblies (5) are installed on the left and right sides, characterized in that, The combined weeding unit (6) consists of a four-bar contouring device (16), a mounting frame (8), an active straw-pulling device (9), a weeding device, a seedling protection device, and a grass-soil separation device. The mounting frame (8) is connected to the three-point suspension frame (3) through the four-bar contouring device (16). There are two sets of weeding devices, seedling protection devices, and grass-soil separation devices, which are installed on both sides of the combined weeding unit (6) through the mounting frame. The mounting frame (8) is equipped with depth-limiting wheels (703) on the left and right, as well as a depth-limiting wheel adjustment device (7) for adjusting the height of the depth-limiting wheels (703). The mounting frame (8) is welded from two parallel steel pipe fixing plates (802), rectangular steel pipe and hollow square tube. The mounting frame (8) is fixed to the rear fixing plate (1606) of the four-bar conforming device (16) through the hollow rectangular tube (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 by an S-shaped spring handle. The wing-shaped weeding shovel is used to cut weeds. Two sets of seedling protection devices are located on both sides of the combined weeding unit (6). The seedling protection device consists 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 a set bolt (1101). One end of the swing arm (1106) is equipped with a seedling protection wheel (1105), and the other end is fixed to the square sleeve (1106) by the swing arm fixing pin (1107). On 02), the seedling protection wheel (1105) is located outside the weeding device and close to 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). Under the action of the tension spring (1104), the swing arm (1106) is close to the adjusting pin (1108) inside the swing arm fixing pin (1107). The active straw-picking device (9) consists of a DC motor (903), a chain drive housing (901), a transmission chain (902), and a straw-picking wheel (906). The chain drive housing (901) is vertically welded between two steel pipe fixing plates (802) of the mounting frame (8). The DC motor (903) is installed on the top of the chain drive housing (901), and a hexagonal shaft (909) is rotatably mounted on the bottom of the chain drive housing (901). The output shaft of the DC motor (903) is connected to the hexagonal shaft (909) via the transmission chain (902). The straw-picking wheel (906) is fixedly mounted on both ends of the hexagonal shaft (909). 06) Multiple sawtooth-shaped blades (904) are welded and fixed on the upper part; above the active straw-pulling device (9) are straw anti-blocking scrapers (905) and airflow ducts (910). The straw anti-blocking scrapers (905) are vertically fixed on the chain drive housing (901) by small screws (907) and located above the straw-pulling wheel (906). The airflow ducts (910) are installed on the chain drive housing (901) and the air outlet faces the active straw-pulling device (9); the grass-soil separation device is fixed to the rear end of the hanging frame by the square tube with ears at the rear end of the steel pipe fixing plate (802), including a finger wheel (1205) for separating soil and weeds.

2. The soybean row active anti-blocking and weeding combined weeder according to claim 1, characterized in that, The four-bar linkage (16) includes a lower connecting rod (1605), an upper connecting rod (1601), a front fixing plate (1602), and a rear fixing plate (1606). The ends of the four are hinged together by long pins (1607) to form a parallelogram linkage mechanism. It also includes an adjustment handle (1603). A compression spring (1604) is connected to the lower connecting rod (1605). The other end of the compression spring (1604) is connected to the adjustment handle (1603). Multiple grooves are provided on the upper connecting rod (1601). The adjustment handle (1603) is locked in the groove of the upper connecting rod (1601). The working depth of the device can be adjusted by adjusting the position of the groove corresponding to the adjustment handle (1603).

3. The soybean row active anti-blocking and weeding combined weeder according to claim 1, characterized in that, Two sets of weeding devices are located on both sides of the combined weeding unit (6) and are arranged alternately. The weeding device consists of an L-shaped steel (101), an internal hex bolt (102), an S-shaped spring handle (103), and a wing-shaped weeding shovel (105). The top of the S-shaped spring handle (103) passes through the flat hole of the L-shaped steel (101) and is fixed to the rectangular steel pipe by the internal hex bolt (102). The bottom of the S-shaped spring handle (103) is fixed with a wing-shaped weeding shovel (105).

4. The soybean row active anti-blocking and weeding combined weeder according to claim 1, characterized in that, Two sets of grass-soil separation devices are located on both sides of the tail end of the combined weeding unit (6). The grass-soil separation device consists of a tension spring (1201), a telescopic sleeve (1202), and a dial wheel (1205). The rear end of the steel pipe fixing plate (802) is welded with a square tube A (801) with ears and a square tube B (808) with ears. The front end of the telescopic sleeve (1202) is fixed to the end of the square tube A (801) with ears by a pin. The tail end is equipped with a dial wheel (1205). The tension spring (1201) is connected between the square tube B (808) with ears and the telescopic sleeve (1202). One end of the tension spring (1201) is connected to the end of the square tube B (808) with ears, and the other end is connected to the telescopic sleeve (1202).

5. A soybean row-to-row active anti-blocking and weeding combined weeder according to claim 1, characterized in that, The depth limiting wheel adjustment device (7) includes an H-shaped fixing frame (707) and a perforated adjusting screw (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 perforated support plate (706) is mounted on the H-shaped fixing frame (707). The tail end of the perforated adjusting screw (702) passes through its hole and is limited and fixed by a hexagonal nut (704). A hexagonal long pin (701) is mounted on the front side of the chain drive housing (901). The upper end of the perforated adjusting screw (702) is fixed on the chain drive housing (901) by the hexagonal long pin (701).

6. The soybean row active anti-blocking and weeding combined weeder according to claim 1, characterized in that, The swing arm fixing pin (1107) is provided with multiple adjustment holes, and the adjustment pin (1108) is inserted into the adjustment holes. By adjusting the 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.

7. A soybean row-mounted active anti-blocking and weeding combined weeder according to claim 4, characterized in that, The telescopic sleeve (1202) has an inner tube (1204) slidably nested at its tail end. A dial wheel (1205) is installed at the tail end of the inner tube (1204). A set screw (1203) is installed on the telescopic sleeve (1202) near the inner tube (1204). The set screw (1203) is used to adjust the extension length of the inner tube (1204) in the telescopic sleeve (1202).

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