A low-loss garlic sprout harvester and a method of using the same

Abstract

The present application relates to a kind of low-loss garlic sprout harvesters and its use method, including frame, straightening feeding device, clamping pulling device, belt conveyor and storage bin, the discharge end of straightening feeding device is adapted with the feed end of clamping pulling device, belt conveyor is located in the discharge side of clamping pulling device, the discharge end of belt conveyor extends to storage bin, frame is also provided with rotary continuous puncture device, rotary continuous puncture device includes two bases rotationally installed on frame, base is fixed with needle disc, the outer edge of needle disc is fixed with a plurality of puncture needle body, the puncture needle body between two needle discs forms garlic sprout plant pseudostem channel, the width of garlic sprout plant pseudostem channel is less than the diameter of garlic sprout plant pseudostem.The puncture needle body of the present application carries out multiple-point puncture to garlic sprout plant pseudostem, makes the internal tissue of garlic sprout part appear fracture, reduces the resistance of pulling out garlic sprout, improves harvesting efficiency, and avoids excessive damage to garlic sprout plant pseudostem.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and more particularly to the field of garlic scape harvesting, specifically to a low-damage garlic scape harvester and its usage method. Background Technology

[0002] Garlic has a history of over two thousand years and is an indispensable seasoning in daily life. It helps to remove fishy smells and enhance the flavor when cooking fish, meat, poultry, and vegetables. Garlic scapes, also known as garlic sprouts or garlic shoots, are the flower stalks that emerge from garlic plants. They consist of two parts: the scape and the stem. Garlic scapes are also a highly nutritious and functional vegetable.

[0003] Because garlic scapes need to be pulled upwards to be harvested, ordinary harvesting machinery cannot complete the task, and manual harvesting is still required. This not only results in low work efficiency but also high costs. In some areas, the labor costs are even higher than the profits from garlic scapes, causing economic losses to growers. As a result, the harvesting of garlic scapes has gradually become an important factor restricting the development of the scale of garlic scape cultivation.

[0004] Currently, some garlic scape harvesting machinery has emerged. However, due to the special nature of garlic scape pulling, the pseudostem of the garlic scape plant needs to be pierced before the scape can be successfully pulled out. In existing garlic scape harvesting equipment, linear movement piercing is usually used, which results in fewer piercing points and greater resistance during pulling, making it difficult to improve the scape pulling rate. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a low-damage garlic scape harvester and its usage method. It not only mechanizes the harvesting of garlic scapes but also improves the scape removal rate and avoids significant damage to the pseudostem of the garlic scape plant during harvesting.

[0006] This invention is achieved through the following technical solution: a low-damage garlic scape harvester is provided, comprising a frame equipped with a walking device, and a straightening and feeding device, a clamping and pulling device, a belt conveyor, and a storage bin mounted on the frame. The discharge end of the straightening and feeding device is adapted to the feed end of the clamping and pulling device. The belt conveyor is located on the discharge side of the clamping and pulling device, and the discharge end of the belt conveyor extends to the storage bin. A rotary continuous piercing device is also provided on the frame below the straightening and feeding device. The rotary continuous piercing device includes two bases rotatably mounted on the frame, and a piercing drive mechanism that drives the two bases to rotate around a vertical axis. A needle plate is coaxially fixed on the base, and a plurality of piercing needles are fixed on the outer edge of the needle plate, arranged circumferentially and extending radially. A garlic scape pseudostem channel is formed between the piercing needles of the two needle plates, and the width of the garlic scape pseudostem channel is smaller than the diameter of the garlic scape pseudostem. In use, this method involves using an upright feeding device to straighten the garlic scapes and feeding them into a clamping and pulling device. The clamping and pulling device then pulls out the garlic scapes, and a belt conveyor transports the pulled garlic scapes to a storage bin. Before pulling, a drive mechanism rotates the base, which in turn rotates the needle plate. As the garlic scapes pass through the pseudostem channel of the plant, the rotating piercing needle continuously punctures the pseudostem of the plant radially, achieving multi-point puncture. This causes some of the internal tissue of the garlic scapes to break, which helps reduce the binding resistance during the subsequent pulling process.

[0007] As an optimization, the puncture needle body is conical, with the end furthest from the needle plate being the pointed end. The distance between the tips of two adjacent puncture needle bodies on the same needle plate is 3-4 mm. The puncture needle body of this optimized design adopts a long conical gradient design, which has good puncture guiding performance, reduces puncture resistance, and minimizes damage to the pseudostem tissue of the garlic scape. The spacing between adjacent puncture needle bodies ensures that the garlic scape pseudostem can be punctured by 3-4 puncture needle bodies when passing through the puncture area, further guaranteeing the effect of multi-point puncture.

[0008] As an optimization, a bevel gear coaxial with the needle disc is fixed on the base, and the bevel gear is connected to the puncture drive mechanism for transmission. This optimized solution integrates the puncture needle body and the bevel gear into one piece. When the bevel gear receives power, it directly drives the puncture needle body to rotate, simplifying the structure. Furthermore, the bevel gear strengthens the needle disc, improving its structural strength.

[0009] As an optimization, the clamping and pulling device includes two non-circular rollers rotatably mounted on the frame, and a drive device for driving the two non-circular rollers to rotate. The two non-circular rollers rotate in opposite directions, forming a garlic scape pulling channel between them. A belt conveyor is located on one side above the garlic scape pulling channel. The cross-sectional profile of the non-circular rollers is a non-circular concave-convex structure constructed by Bézier spline curves, wherein the concave part of one non-circular roller periodically meshes with the convex part of the other non-circular roller. This optimized scheme utilizes the continuous concave-convex transition characteristics of the non-circular profile of the Bézier spline curve, enabling the roller bodies of the non-circular rollers to form periodic meshing contact during rotation, expanding the contact area with the garlic scape, improving the clamping and pulling stability, and evenly distributing the clamping force, thereby achieving flexible clamping and efficient pulling of the garlic scape.

[0010] As an optimization, the non-circular rollers include a roller body and a tapered guide head fixed to the front end of the roller body. The front end of the tapered guide head is a pointed tip. The roller body has a taper of 0.25 degrees to 0.35 degrees in the axial direction, and the diameter of the front end of the roller body is smaller than the diameter of the rear end. This optimized solution, by setting the tapered guide head, facilitates the entry of garlic scapes into the garlic scape extraction channel. The axial taper setting of the roller body can achieve a gradual change in the clamping gap from wide to narrow without causing drastic changes in the roller surface structure, thus achieving stable extraction.

[0011] As an optimization, the roller surface is fitted with spiral protrusions, and the spiral protrusions on the rollers on both sides of the garlic scape extraction channel are staggered. This optimization scheme, by setting spiral protrusions, allows garlic scapes with smaller diameters to be gradually guided into the appropriate clamping area, avoiding missed extraction.

[0012] As an optimization, the straightening and feeding device is tilted backward. The device includes a separating mechanism, a left straightening mechanism to the left of the separating mechanism, and a right straightening mechanism to the right of the separating mechanism. The left and right straightening mechanisms are symmetrically arranged about the separating mechanism. Straightening and separating channels are formed between the left and right straightening and separating mechanisms, and between the left and right straightening and separating mechanisms, respectively. Behind each straightening and separating channel are a clamping and pulling device and a rotating continuous piercing device. This optimized design, by tilting the straightening and feeding device backward, better straightens the garlic scapes. The separating mechanism facilitates separating the scapes and avoids disorder. The left and right straightening mechanisms straighten the garlic scapes and feed them backward into the clamping and pulling device. Furthermore, the two straightening and separating channels improve harvesting efficiency.

[0013] As an optimization, the right-hand threshing mechanism includes a housing fixed to the frame and an annular chain rotatably disposed within the housing. The annular chain has two sides arranged in a left-right direction, and several pawls are installed on the chain at intervals along the circumference. One end of each pawl is rotatably connected to the annular chain via a vertical shaft. A guide rail, fixed to the housing and extending in a front-back direction, is provided on the left side of the annular chain. A groove adapted to the guide rail is provided on each pawl. When the groove of the pawl is engaged with the guide rail, the pawl extends out of the housing towards the side where the threshing mechanism is located. An elongated hole is provided on the side of the housing for the pawls on the left side of the annular chain to pass through. This optimized solution utilizes the rotating chain to drive the pawls to move, straightening and feeding the garlic scapes backward. By setting the guide rail, the pawls are guided, preventing them from rotating under the resistance of the garlic scapes, thus ensuring the reliability of straightening and feeding backward.

[0014] As an optimization, the rear end wall of the elongated hole is located behind the guide rail, and the distance between the rear end wall of the elongated hole and the chain is less than the length of the shift finger. Similarly, the distance between the side wall of the housing away from the separating mechanism and the chain is less than the length of the shift finger. This optimization utilizes the rear end wall of the elongated hole to block the shift finger from moving out of the guide rail, causing the shift finger to rotate around the vertical axis, thus reducing the space occupied by the shift finger outside the chain.

[0015] This solution also provides a method for using a low-damage garlic scape harvester: The straightening and feeding device is inserted from the root of the plant, and the whole machine moves forward in the direction of travel under the drive of the walking device, completing the gathering of garlic leaves and achieving effective separation of garlic scapes from garlic leaves. At the same time, the garlic scapes are straightened using the guide fingers. During the straightening process, the rotary piercing device performs multi-point synchronous piercing on the pseudostem of the garlic scape plant in a high-speed rotating manner, causing the internal tissue of the garlic scape to break, creating conditions for subsequent scape pulling. After the pseudostem of the garlic scape plant is pierced, with the cooperation of the guide fingers and the conical guide head, the straightened garlic scapes enter the garlic scape pulling channel of the clamping and pulling device. The thicker garlic scapes are directly clamped and pulled upward by the concave and convex meshing roller surfaces of two non-circular rollers, while the thinner garlic scapes are pulled into the optimal clamping position by the push of the spiral convex ridges. The pulled garlic scapes fall laterally into the belt conveyor device and are finally sent to the storage bin.

[0016] The beneficial effects of this invention are as follows: by using the puncture needles on the needle plate rotating around the vertical axis to puncture the pseudostem of the garlic scape at multiple points, the internal tissue of the garlic scape will break, reducing the resistance to pulling out the garlic scape, improving harvesting efficiency, and avoiding excessive damage to the pseudostem of the garlic scape. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the low-loss garlic scape harvester of the present invention; Figure 2 A schematic diagram of the upright feeding device; Figure 3 This is a schematic diagram of the right-hand support mechanism. Figure 4 This is a schematic diagram of a rotary continuous puncture device. Figure 5 This is a schematic diagram of the clamping and pulling device. Figure 6 This is a schematic diagram of a non-circular roller structure; Figure 7 This is a schematic diagram of the cross-section of a non-circular roller. Figure 8 Schematic diagram of the interaction between the shift finger and the guide rail; As shown in the figure: 1. Walking device; 2. Straightening and feeding device; 3. Rotary continuous piercing device; 4. Clamping and pulling device; 5. Belt conveyor device; 6. Storage bin; 21. Right lifting mechanism; 22. Dividing mechanism; 23. Left lifting mechanism; 231. Sprocket; 232. Ring chain; 233. Guide rail; 234. Pulley finger; 235. Housing; 31. Bevel gear; 32. Piercing needle body; 311. Needle plate; 41. Non-circular rollers; 42. Drive shaft; 43. Bearing housing; 44. Motor; 45. Gearbox; 411. Roller body; 412. Conical guide head; 413. Spiral ridge. Detailed Implementation

[0018] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0019] like Figure 1 The diagram illustrates a low-damage garlic scape harvester, comprising a frame equipped with a walking device 1, and a straightening and feeding device 2, a clamping and pulling device 4, a belt conveyor 5, and a storage bin 6 mounted on the frame. The discharge end of the straightening and feeding device is adapted to the feed end of the clamping and pulling device. The belt conveyor is located on the discharge side of the clamping and pulling device, and its discharge end extends into the storage bin. The walking device employs existing technology, using a power mechanism to drive the walking wheels to rotate, thus enabling the machine to move. The belt conveyor also employs existing technology, using the rotation of the belt to transport the garlic scapes on the belt to the storage bin, which is used to store the garlic scapes transported by the belt. The clamping and pulling device 4 is installed behind the straightening and feeding device 2. The straightening and feeding device 2 is used to straighten the garlic scape and feed it backward to the clamping and pulling device. The clamping and pulling device is used to pull the garlic scape upward. The garlic scape pulled out by the clamping and pulling device falls onto the belt of the belt conveyor and is transported to the storage bin by the belt conveyor.

[0020] The frame is also equipped with a rotary continuous piercing device 3 located below the straightening and feeding device 2. The rotary continuous piercing device 3 is used to pierce the garlic scape plant, causing the internal tissue of the garlic scape to break, which helps to reduce the binding resistance during the subsequent pulling process. In this embodiment, the rotary continuous piercing device 3 includes two bases rotatably mounted on the frame, and a piercing drive mechanism that drives the two bases to rotate around a vertical axis. A needle plate 311 is coaxially fixed on the base. A plurality of piercing needles 32 are fixed on the outer edge of the needle plate 311, which are arranged circumferentially and evenly at intervals and extend radially. The piercing needles on the needle plate are radial, forming a complete 360-degree piercing coverage structure without dead angles. The plane on which each puncture needle is located on the same base is a transverse plane. A pseudostem channel for the garlic scape plant is formed between the puncture needles of the two needle discs. The width of the pseudostem channel is smaller than the diameter of the garlic scape pseudostem. When the garlic scape pseudostem passes through the pseudostem channel, the puncture needles on both sides puncture it, causing rupture of the internal tissue of the garlic scape. This helps reduce the binding resistance during subsequent extraction and improves the extraction rate. The puncture needles 32 on both sides of the pseudostem channel are arranged with opposite directions and intersecting puncture paths, ensuring a full and synchronous bidirectional puncture effect when the garlic scape pseudostem passes through the puncture area. Specifically, in this embodiment, the puncture needle body 32 is conical, and the end of the puncture needle body away from the needle plate is the tip. The distance between the tips of two adjacent puncture needle bodies on the same needle plate is 3~4mm.

[0021] A bevel gear 31, coaxial with the needle disc, is fixed on the base. The bevel gear 31 is connected to the puncture drive mechanism via a transmission system. The puncture drive mechanism drives the needle disc to rotate at high speed around the central axis, thereby driving the annular array of puncture needles 32 to achieve continuous radial puncture operations. The root of each puncture needle 32 is thickened and embedded in a groove on the needle disc, improving the shear strength and connection firmness of the needle. The portion of the puncture needle 32 extending out of the needle disc adopts a long conical gradient transition design, which has good puncture guiding performance, reduces puncture resistance, and minimizes damage to the pseudostem tissue of the garlic scape.

[0022] The rotary continuous piercing device 3 of this embodiment employs a radial rotational piercing method, enabling simultaneous multi-point piercing of the pseudostem of the garlic scape plant. Compared to traditional piercing methods using fixed needles or linear reciprocating mechanisms, this device covers the entire piercing area through high-speed rotation, allowing for effective piercing without precise positioning of the garlic scape pseudostem. This avoids piercing deviation or missed piercing, significantly improving operational adaptability, target compatibility, and continuous operation efficiency. Furthermore, while achieving effective piercing and assisted extraction, the rotary continuous piercing device 3 avoids significant damage to the garlic scape pseudostem during the piercing process, preventing interference with the plant's nutrient transport to the garlic bulb via photosynthesis, thus significantly reducing adverse effects on subsequent bulb enlargement and growth.

[0023] The clamping and pulling device includes two non-circular rollers 41 rotatably mounted on the frame, and a drive device for driving the two non-circular rollers to rotate. The two non-circular rollers 41 rotate in opposite directions and are synchronized through a 1:1 gear ratio meshing to ensure uniform distribution of the pulling force. A garlic scape pulling channel is formed between the two non-circular rollers, and a belt conveyor 5 is located on one side above the garlic scape pulling channel.

[0024] like Figure 7 As shown, the cross-sectional profile of the non-circular rollers is a non-circular concave-convex structure constructed from Bézier spline curves, in which the concave part of one non-circular roller periodically meshes with the convex part of another non-circular roller. The non-circular profile of the Bézier spline curve has a continuous concave-convex transition characteristic, which enables the roller body 411 of the non-circular rollers 41 to form a periodic meshing contact during rotation, expanding the contact area with the garlic scape, improving the clamping and extraction stability, and uniformly distributing the clamping force, thereby achieving flexible clamping and efficient extraction of the garlic scape. In this embodiment, the profile of the non-circular rollers 41 is a periodically distributed concave-convex arc, constructed using 6 Bézier control points, achieving dynamic surface contact during extraction. Compared with the point contact of traditional circular rollers, the non-circular rollers 41 use surface contact, which significantly improves the clamping and extraction stability and reduces the risk of surface damage to the garlic scape. The periodic change of the non-circular profile makes the extraction process exhibit a clamping-slow fluctuation rhythm, which helps to simulate the natural pulling action during manual extraction and effectively improves the low-loss extraction efficiency.

[0025] The non-circular roller assembly includes a roller body 411 and a tapered guide head 412 fixed to the front end of the roller body. The tapered guide head is located directly above the rotary continuous piercing device. The front end of the tapered guide head 412 is a pointed tip. The roller body has a taper of 0.25 to 0.35 degrees in the axial direction, and the diameter of the front end of the roller body is smaller than the diameter of the rear end. Spiral ridges 413 are fixedly attached to the roller surface of the roller body. The spiral ridges on both sides of the garlic scape extraction channel are staggered. This allows for a gradual change in the clamping gap from wide to narrow without drastic changes to the roller surface structure, ensuring that the garlic scape is gradually guided by the spiral ridges 413 into a clamping area that matches its diameter, achieving stable extraction.

[0026] The uprighting and feeding device is tilted backward. It includes a separating mechanism 22, a right uprighting mechanism 21 located to the right of the separating mechanism, and a left uprighting mechanism 23 located to the left of the separating mechanism. The outer shells of the right and left uprighting mechanisms 21 and 23 are streamlined, with a closed arc-shaped upper section to reduce resistance when in contact with garlic leaves. The lower section gradually tapers to form a conical guide end, facilitating smooth insertion into lodged crops to separate and upright the garlic scapes. The uprighting and feeding device 2 employs a three-mechanism linkage design: the right uprighting mechanism 21 and the left uprighting mechanism 23 work in conjunction with the separating mechanism 22 to efficiently gather garlic leaves, accurately separate garlic leaves from garlic scapes, and simultaneously upright the garlic scapes, feeding the uprighted garlic scapes into the clamping and pulling device 4. The right supporting mechanism 21 and the left supporting mechanism 23 are symmetrically arranged about the separating mechanism 22. Straightening and separating channels are formed between the left supporting mechanism and the separating mechanism, and between the right supporting mechanism and the separating mechanism. Behind each straightening and separating channel are a clamping and pulling device and a rotary continuous piercing device, respectively. A belt conveyor is installed above the left and right clamping and pulling devices; that is, the two clamping and pulling devices share a single belt conveyor. When the pulled garlic scapes leave the non-circular rollers, because the belt conveyor is positioned between the non-circular rollers and slightly higher than the rollers, the garlic scapes naturally tilt to one side of the belt and enter the belt conveyor surface laterally due to the slight upward angle of the belt and the rotational traction of the rollers, thus completing the automatic conveying.

[0027] The dividing mechanism is fixed to the frame and adopts a fingerless V-shaped guide design. The front end of the dividing mechanism is set as a guide cone surface. The guide cone surface on the left side and the front end of the right side of the left supporting mechanism form a guide opening that is larger in the front and smaller in the back. The guide cone surface on the right side and the front end of the left side of the right supporting mechanism form a guide opening that is larger in the front and smaller in the back, so as to facilitate the entry of garlic scapes.

[0028] The left and right harvesting mechanisms are symmetrically arranged. The right harvesting mechanism includes a housing 235 fixed to the frame and an annular chain 232 rotatably disposed within the housing. Two sprockets 231 adapted to the annular chain are rotatably mounted on the housing. One sprocket is connected to a drive motor, which drives the sprocket to rotate, thereby rotating the annular chain. The two sprockets are distributed along the front-back direction, and the two sides of the annular chain 232 are arranged in the left-right direction. A series of fingers 234 are arranged circumferentially on a ring chain. These fingers contact and agitate the garlic scapes. One end of each finger is rotatably connected to the ring chain 232 via a vertical shaft, while the other end extends away from the chain. A guide rail 233, fixed to the outer casing 235 and extending in the front-rear direction, is located on the left side of the ring chain. A groove adapted to the guide rail is formed on each finger. When the groove is engaged with the guide rail, the finger extends out of the casing towards the side where the separating mechanism is located. An elongated hole is formed on the side of the outer casing for the fingers on the left side of the ring chain to pass through. The guide rail guides the movement of the fingers and prevents them from rotating under the resistance of the garlic scapes, ensuring the effective feeding of the garlic scapes backward.

[0029] To enable the retractable shifter, the rear end wall of the elongated hole is located behind the guide rail, and the distance between the rear end wall of the elongated hole and the chain is less than the length of the shifter extending away from the chain. Similarly, the distance between the side wall of the housing away from the distribution mechanism and the chain is less than the length of the shifter. After the shifter moves backward off the guide rail, the rear end wall of the elongated hole blocks the shifter, causing the front end of the shifter to rotate towards the chain, reducing the space occupied by the shifter. When the shifter moves to the right side of the chain, the housing blocks it, placing the shifter parallel to the chain. After the shifter moves with the chain past the sprocket in front, the slot re-engages with the guide rail.

[0030] In this embodiment, the shift finger 234 is arranged in a ring around the chain 232. After the operation is completed, it can automatically retract under the limiting action of the housing 235, actively avoiding the running space of the sprocket 231 and the chain 232, ensuring the smooth coordination and continuous operation between the components of the left and right lifting mechanism.

[0031] In this embodiment, a gearbox 45 with multiple output shafts is fixed inside the storage compartment. The input shaft of the gearbox is connected to a motor 44, which is powered by a battery. A drive shaft 42 is fixed to the rear end of the non-circular roller body. The drive shaft 42 is rotatably connected to the frame via a bearing seat 43, and is also connected to the output shaft of the gearbox. The gearbox and motor form a drive device for rotating the non-circular rollers. Gears with opposite directions are installed inside the gearbox to drive the two non-circular rollers 41 in the same clamping and pulling device to rotate, achieving opposite directions of rotation for the two non-circular rollers. This is existing technology and will not be elaborated further. The piercing drive mechanism can have a separate motor to drive the base to rotate, or a long shaft can be installed on the frame. One end of the long shaft is connected to the output shaft of the gearbox, and the other end is equipped with a transmission bevel gear that meshes with a bevel gear on the base. Power is also provided by the motor 44 and the gearbox 45. The arrangement of the transmission bevel gear, the long shaft, and the transmission connection between the long shaft and the output shaft of the gearbox are all existing technologies. The walking device can also be powered by an electric motor and a gearbox, and the walking wheel axle of the walking device can be connected to the output shaft of the gearbox via a belt or chain drive.

[0032] This embodiment describes the operation of a low-damage garlic scape harvester: During operation, the feeding device is first inserted into the root of the plant. Driven by the walking mechanism, the machine moves forward in the direction of travel, gathering the garlic leaves and effectively separating the garlic scapes from the leaves. Simultaneously, the garlic scapes are straightened using a guide finger. During this straightening process, a rotary piercing device performs multi-point simultaneous piercing of the pseudostem of the garlic scape plant at high speed, causing the internal tissue of the garlic scape to rupture. The breakage creates conditions for subsequent scape removal. After piercing the pseudostem of the garlic scape plant, the upright garlic scape enters the garlic scape extraction channel of the clamping and extraction device with the joint cooperation of the guide finger and the conical guide head. The thicker garlic scapes are directly clamped and pulled upward by the concave and convex meshing roller surfaces of the two non-circular rollers, while the thinner garlic scapes are pushed into the optimal clamping position by the spiral convex ridge and then extracted. The extracted garlic scapes fall laterally into the belt conveyor device and are finally sent to the storage bin.

[0033] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A low-damage garlic scape harvester, comprising a frame equipped with a walking device (1), and a straightening and feeding device (2), a clamping and pulling device (4), a belt conveyor (5), and a storage bin (6) mounted on the frame, wherein the discharge end of the straightening and feeding device is adapted to the feed end of the clamping and pulling device, the belt conveyor is located on the discharge side of the clamping and pulling device, and the discharge end of the belt conveyor extends to the storage bin, characterized in that: The frame is also equipped with a rotary continuous puncture device (3) located below the straightening feeding device. The rotary continuous puncture device (3) includes two bases rotatably mounted on the frame, and a puncture drive mechanism that drives the two bases to rotate around a vertical axis. A needle plate (311) is coaxially fixed on the base. A number of puncture needles (32) are fixed on the outer edge of the needle plate (311) and are arranged in a circumferentially spaced manner and extended radially. A garlic scape pseudostem channel is formed between the puncture needles of the two needle plates. The width of the garlic scape pseudostem channel is smaller than the diameter of the garlic scape pseudostem. The clamping and pulling device includes two non-circular rollers (41) rotatably mounted on the frame, and a driving device for driving the two non-circular rollers to rotate. The two non-circular rollers (41) rotate in opposite directions, and a garlic shoot pulling channel is formed between the two non-circular rollers. The belt conveyor (5) is located on one side above the garlic shoot pulling channel. The cross-sectional profile of the non-circular rollers is a non-circular concave-convex structure constructed by Bezier spline curves, wherein the concave part of one non-circular roller periodically meshes with the convex part of the other non-circular roller. The non-circular rollers include a roller body (411) and a tapered guide head (412) fixed to the front end of the roller body. The front end of the tapered guide head (412) is a pointed tip. The roller body has a taper of 0.25 degrees to 0.35 degrees in the axial direction, and the diameter of the front end of the roller body is smaller than the diameter of the rear end of the roller body. The upright feeding device is tilted backward. The upright feeding device includes a separating mechanism (22), a left supporting mechanism (23) located to the left of the separating mechanism, and a right supporting mechanism (21) located to the right of the separating mechanism. The left supporting mechanism (23) and the right supporting mechanism (21) are symmetrically arranged about the separating mechanism (22). Upright and separating channels are formed between the left supporting mechanism and the separating mechanism, and between the right supporting mechanism and the separating mechanism. A clamping and pulling device and a rotating continuous piercing device are respectively provided behind each upright and separating channel. The right-hand rice-separating mechanism includes a housing (235) fixed to the frame and an annular chain (232) rotatably disposed within the housing. The two sides of the annular chain (232) are arranged in the left-right direction. Several finger-like devices (234) are installed on the annular chain and arranged at intervals along the circumference. One end of each finger-like device is rotatably connected to the annular chain (232) via a vertical shaft. A guide rail (233) fixed to the housing (235) and extending in the front-back direction is provided on the left side of the annular chain. A groove adapted to the guide rail is provided on the finger-like device. When the groove of the finger-like device is engaged on the guide rail, the finger-like device extends out of the housing towards the side where the rice-separating mechanism is located. An elongated hole is provided on the side of the housing for the finger-like device on the left side of the annular chain to pass through.

2. The low-damage garlic scape harvester according to claim 1, characterized in that: The puncture needle body (32) is conical, and the end of the puncture needle body away from the needle plate is the tip. The distance between the tips of two adjacent puncture needle bodies on the same needle plate is 3~4mm.

3. The low-damage garlic scape harvester according to claim 2, characterized in that: A bevel gear (31) coaxial with the needle plate is fixed on the base, and the bevel gear (31) is connected to the puncture drive mechanism for transmission.

4. The low-damage garlic scape harvester according to claim 1, characterized in that: The roller body is fixedly fitted with a spiral protrusion (413), and the spiral protrusions on the roller body on both sides of the garlic sprout extraction channel are arranged alternately.

5. A low-damage garlic scape harvester according to claim 1, characterized in that: The rear end wall of the elongated hole is located behind the guide rail, and the distance between the rear end wall of the elongated hole and the chain is less than the length of the shift finger. The distance between the side wall of the outer shell away from the splitting mechanism and the chain is less than the length of the shift finger.

6. The method of using a low-damage garlic scape harvester according to any one of claims 1 to 5, characterized in that: The straightening and feeding device is inserted from the root of the plant. The whole machine moves forward in the direction of travel under the drive of the walking device, which completes the gathering of garlic leaves and achieves effective separation of garlic scapes from garlic leaves. At the same time, the finger is used to straighten the garlic scape. During the process of straightening the garlic scape, the rotary piercing device performs multi-point synchronous piercing on the pseudostem of the garlic scape plant in a high-speed rotating manner, causing the internal tissue of the garlic scape to break. After the pseudostem of the garlic scape plant is pierced, the upright garlic scape enters the garlic scape extraction channel of the clamping and extraction device with the cooperation of the finger and the conical guide head. The thicker garlic scape is directly clamped and pulled upward by the concave and convex meshing roller surfaces of the two non-circular rollers, while the thinner garlic scape is pushed into the optimal clamping position by the spiral convex ridge and then extracted. The extracted garlic scape falls horizontally into the belt conveyor device and is finally sent to the storage bin.

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