A device and method for harvesting Houttuynia cordata Thunb. with a drum

Abstract

The present invention provides a harvesting device and method for Houttuynia cordata in a drum. It includes a drum, a positioning ring is installed inside the drum, a connecting plate is installed on the positioning ring, a toothed ring is installed on the connecting plate, the toothed ring is meshed and driven with a small gear, the small gear is driven by a motor, the drum is driven by the small gear to drive the toothed ring, and then the toothed ring drives the drum to rotate. The drum drives the comb teeth to rotate. After the tail of the handle is stressed, it contacts the ground for support. The comb teeth pick up the Houttuynia cordata in the field, and then the picked Houttuynia cordata is washed by a high-pressure water gun to achieve the harvesting of Houttuynia cordata. The power and transmission components of the device are integrally sealed inside the drum, with a simple structure and low cost. It can effectively reduce the labor intensity of people and improve the harvesting efficiency, and greatly reduce the difficulty of harvesting Houttuynia cordata in paddy fields.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery harvesting, and particularly to a drum-type houttuynia cordata harvesting device and method. Background Art

[0002] Houttuynia cordata, as an economic crop with both medicinal and edible uses, is widely planted, mainly distributed in Hunan, Hubei, Guizhou, Sichuan, Chongqing, Yunnan and other places. It likes a humid and shady growth environment. Its underground stems grow, intertwined and sprawling in a large area in the soil layer about 5 cm above the ground. Its planting is divided into two methods: dry-field planting and paddy-field planting. In dry fields, due to the loose soil, the soil on the houttuynia cordata roots is mainly shaken off by mechanical vibration. However, the soil in paddy fields is clay, with relatively high viscosity, which cannot be shaken off by mechanical vibration and is easy to damage the roots, affecting the quality of houttuynia cordata for sale. The existing harvesting of houttuynia cordata planted in paddy fields is mainly manual harvesting, generally divided into three steps: First, manually cut off the leaves of houttuynia cordata with a sickle and collect them for drying and selling as medicinal materials; Second, since the root neck part between the leaves above the ground and the houttuynia cordata roots below the ground is useless, this part is about 5 cm thick from the houttuynia cordata roots below the ground, and it is necessary to manually shovel this root neck part with a spade and discard the shoveled root neck and soil on the empty land where the houttuynia cordata has been harvested; Third, continuously wash the soil with a high-pressure water gun to wash out the houttuynia cordata roots, and then manually collect the houttuynia cordata and wash it clean centrally for sale. The use of manual harvesting not only has a large labor intensity but also has a low work efficiency, and the entire harvesting cycle is long.

[0003] Although CN 114467465 A discloses a paddy-field houttuynia cordata harvesting and cleaning integrated machine and a harvesting method, in which a harvesting mechanism for excavating houttuynia cordata is supported and installed at the head of the frame, the harvesting mechanism is connected to a transmission mechanism for driving its rotation, and the transmission mechanism is connected to a power device for providing power. Then, the underground houttuynia cordata roots are pried up by the tooth rake on the harvesting mechanism and the pried-up houttuynia cordata is washed by a high-pressure water gun to achieve the harvesting of houttuynia cordata. This method can effectively improve the harvesting efficiency of houttuynia cordata and reduce the labor intensity. However, when this device operates in the field, it is difficult to turn around, inconvenient to move and walk in the paddy field, easy to deviate when encountering uneven fields, and inconvenient to transport, and a special transportation tool is required to transport it to the operation field. Summary of the Invention

[0004] Aiming at the above deficiencies in the prior art, the present invention provides a drum-type houttuynia cordata harvesting device and method. This device, in cooperation with manual operation, can be used for harvesting houttuynia cordata planted in paddy fields, can effectively reduce the labor intensity of people and improve the harvesting efficiency, and greatly reduce the difficulty of harvesting houttuynia cordata in paddy fields.

[0005] In order to achieve the above technical features, the object of the present invention is achieved as follows: A drum-type houttuynia cordata harvesting device, which includes a drum. A toothed ring is installed inside the drum. The toothed ring is fixedly installed on a connection disk and meshes with a small gear for transmission. The small gear is driven by a motor. The drum is driven by the small gear to drive the toothed ring, and then the toothed ring drives the drum to rotate, and the drum drives the comb teeth to achieve the harvesting of houttuynia cordata; A central shaft is installed at the center of the drum, and a handle is installed on the central shaft.

[0006] Positioning rings are welded at both ends of the inner wall of the drum. The connection disk is fixedly installed on the positioning ring by bolts. The central shaft is supported and installed on a flange through bearings. The flange is fixedly connected to the connection disk by bolts. The toothed ring is fixedly installed on one side of the connection disk by bolts. The small gear meshes with the toothed ring for transmission. The small gear is installed on the output shaft of the motor. The motor is fixedly installed on a motor base and powered by a battery assembly. The motor base is fixedly installed on the central shaft. The battery assembly is fixedly installed on the central shaft by a hook.

[0007] Closed spaces are formed on both sides of the drum by detachable covers. The comb teeth are installed on the central shaft and can rotate freely. There are multiple pin holes on each side of the comb teeth. During operation, first pins are respectively used to fixedly connect the comb teeth to the covers on the side of the drum. The comb teeth and the drum rotate together to pry up the houttuynia cordata on the ground, and the pried-up houttuynia cordata is wound along the outer wall of the drum. When the drum rotates, the soil on the houttuynia cordata is washed clean by a high-pressure water gun.

[0008] The handles are installed at both ends of the central shaft and fixed by keys, so that the handles cannot rotate relative to the central shaft. The handles are used to correct the walking direction of the drum and for road transportation. The two handles are connected by a connecting rod. A cutting knife is installed on the handles to cut off the houttuynia cordata in the soil on both sides of the drum.

[0009] The tail of the handle is upturned at a certain angle; during transportation, it is convenient for manual operation to hold the tail of the handle for forward and backward movement;

[0010] During operation, the tail of the handle contacts the ground to reduce resistance, and at the same time is used to balance the motor torque, playing a role of support and guidance.

[0011] The central shaft is machined with an axial deep hole. A set of V-shaped grooves and three sets of rectangular clamping grooves are symmetrically machined radially in the middle of the central shaft. A bayonet groove is also machined on one side of the set of V-shaped grooves. The transmission screw is installed in the axial deep hole of the central shaft. One end of the transmission screw is assembled with a bearing, and the other end is assembled with the central hole of the positioning block. The positioning block is installed in the bayonet groove. The split nut is formed by cutting a whole structure into two halves and then assembled. The end face flange of the split nut is connected to the motor base by bolts. The split nut is assembled with the V-shaped groove in the central shaft and can slide and be limited in the V-shaped groove. The thread of a partial arc section in the split nut is assembled with the transmission screw. The support plate is fixedly installed in the rectangular clamping groove on the central shaft and locked by a support plate locking block. A guide rod is fixedly installed on the support plate. The other end of the guide rod is fitted and installed with a linear bearing. The linear bearing is fixedly installed on the motor base. The guide rod can slide axially along the linear bearing for guiding. When the transmission screw is rotated, the split nut slides in the V-shaped groove, thereby driving the motor base to move left and right along the axis of the central shaft, realizing the engagement and separation of the pinion and the gear ring. When the transmission screw stops, self-locking and limiting are carried out through the thread.

[0012] A method for harvesting Houttuynia cordata using a drum-type Houttuynia cordata harvesting device includes the following steps:

[0013] Step 1: In the walking state, insert the third pin on the drum-type Houttuynia cordata device into the corresponding pin hole, fixedly connect the comb teeth with the two side handles, then retract the cutter along the counterclockwise direction to be parallel to the side handle, and insert the second pin into the corresponding pin hole to fixedly connect the cutter with the side handle. Then use a wrench tool to rotate the transmission screw counterclockwise to separate the pinion from the gear ring, and push the handle by hand to make the Houttuynia cordata harvesting device walk on the road surface to the Houttuynia cordata harvesting area.

[0014] Step 2: In the quasi-operation state, remove the third pin on the drum-type Houttuynia cordata device, insert the four first pins into the corresponding pin holes to fixedly connect the comb teeth with the drum, remove the second pin and place the cutter in the vertical state along the clockwise direction, then fix the cutter in the corresponding pin hole of the second pin, and then use a wrench tool to rotate the transmission screw clockwise to make the pinion and the gear ring engage with each other.

[0015] Step 3: Operating status. Start the motor to drive the pinion to rotate the ring gear, which in turn drives the drum forward. The drum drives the comb teeth to rotate. When the tail of the handle is stressed, it naturally contacts the ground. When the front teeth on the comb teeth are inserted into the soil and lift the houttuynia cordata in the soil, the cutter installed on the side of the handle cuts the houttuynia cordata on the side, causing the houttuynia cordata within the width of the drum to be lifted along the outer wall of the drum. The operator stands behind the drum and continuously flushes the lifted houttuynia cordata with a high-pressure water gun. When the rear teeth on the comb teeth are about to be inserted into the soil, that is, when the drum advances half a circumference, use a sickle to cut the houttuynia cordata on the ground and collect the houttuynia cordata on the front teeth. Repeat this step, that is, whenever the drum advances half a circumference, use a sickle to cut the houttuynia cordata on the ground and then collect it manually. When the harvesting of the houttuynia cordata planting area is completed along the forward direction of the drum, the operating device turns to achieve the harvesting of houttuynia cordata in another area.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention is a drum-type houttuynia cordata harvesting device. Through this device, the houttuynia cordata in the field can be simply and quickly lifted, effectively reducing the labor intensity of the operator and improving the harvesting efficiency of houttuynia cordata.

[0018] 2. The power and transmission components of the above-mentioned drum-type houttuynia cordata harvesting device are integrally sealed inside the drum, with a simple structure, low cost, convenient transportation and operation, and are suitable for houttuynia cordata growers in paddy fields.

[0019] 3. The comb teeth of the above-mentioned drum-type houttuynia cordata harvesting device can be retracted, and the separation mechanism inside the device can separate the ring gear and the pinion. The drum can be rolled forward at a certain speed by pushing the handle, which is very convenient for transportation, moves easily on roads and in paddy fields, similar to a flatbed cart, and motor power can also be added when climbing slopes with greater resistance.

[0020] 4. The drum of the above-mentioned drum-type houttuynia cordata has a diameter of about 0.7m and a length of about 0.9m. The length of the houttuynia cordata harvested at one time is about 1m and the width is about 0.9m, which is convenient for manual collection. Description of the Drawings

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 This is Model 1 of the device of the present invention.

[0023] Figure 2 This is Model 2 of the device of the present invention.

[0024] Figure 3 This is the operating status diagram of the device of the present invention.

[0025] Figure 4 This is the walking status diagram of the device of the present invention.

[0026] Figure 5 This is the separation mechanism diagram of the present invention.

[0027] Figure 6 Details of the separation mechanism of the present invention Figure 1 .

[0028] Figure 7 Details of the separation mechanism of the present invention Figure 2 .

[0029] Figure 8 Details of the separation mechanism of the present invention Figure 3 .

[0030] In the figure: drum 1, comb teeth 2, handle 3, connecting rod 4, central shaft 5, cutter 6, cover plate 7, positioning ring 8, connecting plate 9, gear ring 10, pinion 11, flange 12, motor base 13, motor 14, hook 15, battery assembly 16, first pin 17, second pin 18, third pin 19, transmission screw 20, split nut 21, positioning block 22, support plate lock block 23, support plate 24, guide rod 25, linear bearing 26. Specific embodiments

[0031] The following further describes the embodiments of the present invention with reference to the accompanying drawings.

[0032] Embodiment 1:

[0033] Refer to Figure 1-8 , a drum-type houttuynia cordata harvesting device, which includes a drum 1, comb teeth 2, a handle 3, a connecting rod 4, a central shaft 5, a cutter 6, a cover plate 7, a positioning ring 8, a connecting plate 9, a gear ring 10, a pinion 11, a flange 12, a motor base 13, a motor 14, a hook 15, a battery assembly 16, a first pin 17, a second pin 18, a third pin 19, a transmission screw 20, a split nut 21, a positioning block 22, a support plate lock block 23, a support plate 24, a guide rod 25 and a linear bearing 26. A gear ring 10 is installed inside the drum 1. The gear ring 10 is fixedly installed on the connecting plate 9 and meshes with the pinion 11 for transmission. The pinion 11 is driven by the motor 14. The drum 1 drives the gear ring 10 through the pinion 11, and then the gear ring 10 drives the drum 1 to rotate. The drum 1 drives the comb teeth 2 to achieve the harvesting of houttuynia cordata. This device can be used for the harvesting of houttuynia cordata planted in paddy fields in cooperation with manual operation, which can effectively reduce the labor intensity of people and improve the harvesting efficiency, and greatly reduce the difficulty of harvesting houttuynia cordata in paddy fields.

[0034] Further, the diameter of the drum 1 is about 0.7 m, which is convenient for rolling. Positioning rings 8 are welded at both ends of the inner wall. The connecting plate 9 is fixedly installed on the positioning ring 8 by bolts. The central shaft 5 is supported and installed on the flange plate 12 through bearings. The flange plate 12 is fixedly connected to the connecting plate 9 by bolts. The gear ring 10 is fixedly installed on the right connecting plate 9 by bolts. The pinion 11 meshes with the gear ring 10 for transmission. The pinion 11 is installed on the output shaft of the motor 14. The motor 14 is fixedly installed on the motor base 13 and powered by the battery assembly 16. The motor base 13 is fixedly installed on the central shaft 5. The battery assembly 16 is fixedly installed on the central shaft 5 by a hook 15. Through the above-mentioned transmission mechanism of the gear and the gear ring, it can be used to drive the entire drum 1 to rotate, and then drive the entire harvesting device to move forward in the houttuynia cordata field, thereby facilitating the subsequent harvesting operation process.

[0035] Further, both sides of the drum 1 form a closed space through detachable covers 7, which has a waterproof effect. The comb teeth 2 are installed on the central shaft 5 and can rotate freely. There are 2 pin holes on each side of the comb teeth 2. During operation, the first pins 17 are used to fixedly connect the comb teeth 2 to the cover 7 on the side of the drum respectively. The comb teeth 2 and the drum 1 rotate together to lift the houttuynia cordata on the ground, and make the lifted houttuynia cordata wind along the outer wall of the drum 1. When the drum 1 rotates, the soil on the houttuynia cordata is washed away by a high-pressure water gun. Through the above-mentioned cooperation relationship between the comb teeth 2 and the drum 1, it is ensured that the comb teeth 2 have two different working states. When the comb teeth 2 are used for digging houttuynia cordata, the houttuynia cordata can be lifted, and when the drum moves forward, the connection between the comb teeth 2 and the drum 1 is released.

[0036] Further, the handles 3 are installed at both ends of the central shaft 5 and fixed by keys, so that the handles 3 cannot rotate relative to the central shaft 5. The handles 3 are used to correct the walking direction of the drum 1 and for road transportation. The two handles 3 are connected by a connecting rod 4. A cutter 6 is installed on the handle 3 to cut the houttuynia cordata in the soil on both sides of the drum. Through the above-mentioned cutter 6, it is convenient to cut the houttuynia cordata.

[0037] Further, the tail of the handle 3 is tilted upward at a certain angle, which has two functions: 1. It is convenient for manual grasping of the tail of the handle 3 for forward and backward operations during transportation; 2. When operating, the tail of the handle 3 contacts the ground, which can reduce the resistance, and at the same time is used to balance the torque of the motor 14, playing a supporting and guiding role.

[0038] Further, an axial deep hole is machined on the central shaft 5. A group of V-shaped grooves and three groups of rectangular clamping grooves are symmetrically machined radially in the middle of the central shaft 5. A bayonet groove is also machined on one side of the group of V-shaped grooves. The transmission screw 20 is installed in the deep hole of the central shaft 5. One end of the transmission screw 20 is assembled with a bearing, and the other end is assembled with the central hole of the positioning block 22. The positioning block 22 is installed in the bayonet groove. The split nut 21 is formed by cutting a whole structure into two halves and then assembling them. The end face flange of the split nut 21 is connected to the motor base 13 by bolts. The split nut 21 is assembled with the V-shaped groove in the central shaft 5 and can slide and be limited in the V-shaped groove. The thread of a partial arc section in the split nut 21 is assembled with the transmission screw 20. The support plate 24 is fixedly installed in the rectangular clamping groove on the central shaft 5 and is locked by the support plate lock block 23. A guide rod 25 is fixedly installed on the support plate 24. The other end of the guide rod 25 is cooperatively installed with a linear bearing 26. The linear bearing 26 is fixedly installed on the motor base 13. The guide rod 25 can slide axially along the linear bearing 26 for guiding. When the transmission screw 20 is rotated, the split nut 21 slides in the V-shaped groove, thereby driving the motor base 13 to move left and right along the axis of the central shaft 5, realizing the engagement and separation of the pinion 11 and the gear ring 10. When the transmission screw 20 stops, it is self-locked and limited by the thread.

[0039] Embodiment 2:

[0040] A method for harvesting Houttuynia cordata with the described Houttuynia cordata harvesting device for a roller includes the following steps:

[0041] Step 1: In the traveling state, insert the third pin 19 on the Houttuynia cordata device for a roller into the corresponding pin hole, fixedly connect the comb teeth 2 with the two side handles 3, then retract the cutter 6 counterclockwise to be parallel to the side handle 3, and insert the second pin 18 into the corresponding pin hole to fixedly connect the cutter 6 with the side handle 3. Then use a wrench tool to rotate the transmission screw 20 counterclockwise to separate the pinion 11 from the gear ring 10, and push the handle 3 by hand to make the Houttuynia cordata harvesting device travel on the road surface to the Houttuynia cordata harvesting area;

[0042] Step 2: In the quasi-operation state, remove the third pin 19 on the Houttuynia cordata device for a roller, insert the four first pins 17 into the corresponding pin holes to fixedly connect the comb teeth 2 with the roller 1, remove the second pin 18 and place the cutter 6 in the vertical state clockwise, then fix the cutter 6 in the corresponding pin hole of the second pin 18, and then use a wrench tool to rotate the transmission screw 20 clockwise to make the pinion 11 and the gear ring 10 engage with each other;

[0043] Step 3: Operating status. Start the motor 14 to drive the pinion 11 to rotate, which in turn drives the ring gear 10 to rotate and then drives the drum 1 to move forward. The drum 1 drives the comb teeth 2 to rotate. When the tail of the handle 3 is stressed, it naturally contacts the ground. When the front teeth on the comb teeth 2 are inserted into the soil and lift the houttuynia cordata in the soil, the cutter 6 installed on the side of the handle 3 cuts the houttuynia cordata on the side, causing the houttuynia cordata with the width of the drum 1 to be lifted along the outer wall of the drum 1. The operator stands behind the drum 1 and continuously flushes the lifted houttuynia cordata with a high-pressure water gun. When the rear teeth on the comb teeth 2 are about to be inserted into the soil, that is, when the drum 1 moves forward half a circumference, use a sickle to cut the houttuynia cordata on the ground and collect the houttuynia cordata on the front teeth. Repeat this step, that is, every time the drum 1 moves forward half a circumference, use a sickle to cut the houttuynia cordata on the ground and then collect it manually. When the harvesting of the houttuynia cordata planting area is completed along the forward direction of the drum 1, the operating device turns to realize the harvesting of houttuynia cordata in another area.

Claims

1. A harvesting device for Houttuynia cordata Thunb. with a roller, characterized in that: It includes a drum (1) with a gear ring (10) installed inside. The gear ring (10) is fixedly installed on a connection plate (9) and meshes with a pinion (11) for transmission. The pinion (11) is driven by a motor (14). The drum (1) drives the gear ring (10) through the pinion (11), and then the gear ring (10) drives the drum (1) to rotate. The drum (1) drives the comb teeth (2) to achieve the harvesting of Houttuynia cordata; a central shaft (5) is installed at the center of the drum (1), and a handle (3) is installed on the central shaft (5). Positioning rings (8) are welded at both ends of the inner wall of the drum (1). The connection plate (9) is fixedly installed on the positioning rings (8) by bolts. The central shaft (5) is supported by bearings and installed on a flange plate (12). The flange plate (12) is fixedly connected to the connection plate (9) by bolts. The gear ring (10) is fixedly installed on the connection plate (9) on one side by bolts. The pinion (11) meshes with the gear ring (10) for transmission. The pinion (11) is installed on the output shaft of the motor (14). The motor (14) is fixedly installed on a motor base (13) and powered by a battery assembly (16). The motor base (13) is fixedly installed on the central shaft (5). The battery assembly (16) is fixedly installed on the central shaft (5) by a hook (15). Closed spaces are formed on both sides of the drum (1) by detachable cover plates (7). The comb teeth (2) are installed on the central shaft (5) and can rotate freely. There are multiple pin holes on both sides of the comb teeth (2). During operation, the first pins (17) are used to fixedly connect the comb teeth (2) to the cover plates (7) on the side of the drum respectively. The comb teeth (2) and the drum (1) rotate together to lift the Houttuynia cordata on the ground, and the lifted Houttuynia cordata winds along the outer wall of the drum (1). When the drum (1) rotates, the soil on the Houttuynia cordata is washed clean by a high-pressure water gun. The comb teeth (2) include front teeth and rear teeth, and the front teeth and rear teeth are arranged oppositely.

2. The harvesting device for Houttuynia cordata Thunb. of claim 1, wherein: The handle (3) is installed at both ends of the central shaft (5) and fixed by a key, so that the handle (3) cannot rotate relative to the central shaft (5). The handle (3) is used to correct the walking direction of the drum (1) and for road transportation. The two handles (3) are connected by a connecting rod (4). A cutter (6) is installed on the handle (3) to cut off the Houttuynia cordata in the soil on both sides of the drum.

3. The harvesting device for Houttuynia cordata Thunb. with a roller according to claim 1, wherein: The tail of the handle (3) tilts upward at a certain angle; during transportation, it is convenient for manual operation to hold the tail of the handle (3) for forward and backward movement. During operation, the tail of the handle (3) contacts the ground to reduce resistance, and at the same time, it is used to balance the torque of the motor (14), playing a role of support and guidance.

4. The harvesting device for Houttuynia cordata Thunb. of a drum according to claim 1, wherein: The central shaft (5) is machined with an axial deep hole. In the middle of the central shaft (5), a set of V-shaped grooves and three sets of rectangular clamping grooves are symmetrically machined radially. A bayonet groove is also machined on one side of the set of V-shaped grooves. The transmission screw rod (20) is installed in the axial deep hole of the central shaft (5). One end of the transmission screw rod (20) is assembled with a bearing, and the other end is assembled with the central hole of the positioning block (22). The positioning block (22) is installed in the bayonet groove. The split nut (21) is formed by cutting a whole structure into two halves and then assembled. The end face flange of the split nut (21) is connected to the motor base (13) by bolts. The split nut (21) is assembled with the V-shaped groove in the central shaft (5) and can slide and be limited in the V-shaped groove. The thread of a partial arc section in the split nut (21) is assembled with the transmission screw rod (20). The support plate (24) is fixedly installed in the rectangular clamping groove on the central shaft (5) and locked by the support plate locking block (23). A guide rod (25) is fixedly installed on the support plate (24). The other end of the guide rod (25) is fitted and installed with a linear bearing (26). The linear bearing (26) is fixedly installed on the motor base (13). The guide rod (25) can slide axially along the linear bearing (26) for guiding. When the transmission screw rod (20) is rotated, the split nut (21) slides in the V-shaped groove, thereby driving the motor base (13) to move left and right along the axis of the central shaft (5), realizing the engagement and separation of the pinion gear (11) and the ring gear (10). When the transmission screw rod (20) stops, it is self-locked and limited by the thread.

5. A method for harvesting Houttuynia cordata using the drum-type Houttuynia cordata harvesting device according to claim 4, characterized in that It includes the following steps: Step 1: In the walking state, insert the third pin (19) on the roller houttuynia device into the corresponding pin hole, fixedly connect the comb teeth (2) with the two side handles (3), then retract the cutter (6) counterclockwise to be parallel to the side handle (3), and insert the second pin (18) into the corresponding pin hole to fixedly connect the cutter (6) with the side handle (3). Then use a wrench tool to rotate the transmission screw rod (20) counterclockwise to separate the pinion gear (11) from the ring gear (10), and push the handle (3) by hand to make the houttuynia harvesting device walk on the road surface to the houttuynia harvesting area. Step 2: In the quasi-operation state, remove the third pin (19) on the roller houttuynia device, insert the four first pins (17) into the corresponding pin holes to fixedly connect the comb teeth (2) with the roller (1), remove the second pin (18), place the cutter (6) in the vertical state clockwise, then fix the cutter (6) in the corresponding pin hole of the second pin (18), and then use a wrench tool to rotate the transmission screw rod (20) clockwise to make the pinion gear (11) engage with the ring gear (10). Step 3: Operating status. Start the motor (14) to drive the pinion gear (11) to drive the ring gear (10) to rotate, thereby driving the drum (1) to move forward. The drum (1) drives the comb teeth (2) to rotate. When the tail of the handle (3) is stressed, it naturally contacts the ground. When the front teeth on the comb teeth (2) are inserted into the soil and lift the houttuynia cordata in the soil, the cutter (6) installed on the side of the handle (3) cuts the houttuynia cordata on the side, so that the houttuynia cordata with the width of the drum (1) is lifted along the outer wall of the drum (1). The operator stands behind the drum (1) and continuously flushes the lifted houttuynia cordata with a high-pressure water gun. When the rear teeth on the comb teeth (2) are about to be inserted into the soil and the drum (1) moves forward half a circumference, use a sickle to cut the houttuynia cordata on the ground and collect the houttuynia cordata on the front teeth. Repeat this step. Whenever the drum (1) moves forward half a circumference, use a sickle to cut the houttuynia cordata on the ground and then collect it manually. When the harvesting of the houttuynia cordata planting area is completed along the forward direction of the drum (1), the operating device turns to harvest the houttuynia cordata in another area.

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