Ginger harvester

Abstract

The present application relates to agricultural machinery, in particular to a ginger harvesting machine. It comprises a frame, a seedling separating device located at the front end of the upper part of the frame, a seedling cutting device located below the seedling separating device, a seedling clamping and side laying device located behind the seedling separating device and at the top of the frame, a conveying device located at the bottom of the frame and arranged along the front and rear direction of the frame, a digging device located in front of the conveying device and below the seedling cutting device, and a righting device located above the conveying device. The seedling cutting, laying, ginger digging and conveying are realized at one time, which greatly improves the harvesting efficiency, and the broken rate of the harvested ginger is low, realizing fast, efficient, low-loss and low-cost ginger harvesting operation.

Description

TECHNICAL FIELD

[0001] The present application relates to agricultural machinery, in particular to a ginger harvesting machine. BACKGROUND

[0002] The existing ginger harvesting machines can only achieve simple digging, or use the leek harvesting machine to harvest, which cannot efficiently harvest ginger. The domestic ginger harvesting machines are mostly dug by machines, and then manually pulled out from the ground, and the efficiency is low.

[0003] The tracked ginger harvesting machine usually uses a diesel engine as a power source, and the walking mode of this type of harvester is tracked, which has good passing performance and is widely used. However, manual cutting and picking are still needed in the later stage.

[0004] The tractor-mounted ginger harvesting machine uses a tractor as a power source, and connects the digging device to the tractor through the tractor suspension mechanism. The digging device is generally a plow or a plow. The machine turns over the ginger from the ground after walking. This harvesting method is easy to damage ginger and has a narrow application range.

[0005] In recent years, the ginger combined harvester can achieve digging, soil loosening, cleaning, cutting, and collecting in one step, greatly improving the work efficiency. However, the overall harvesting effect is poor, the ginger breakage rate is high, and it cannot meet the requirements of low breakage rate of farmers. SUMMARY

[0006] The present application aims to overcome the above-mentioned defects in the prior art and provides a ginger harvesting machine that can cut seedlings, lay seedlings, dig ginger, and transport ginger in one step, greatly improving the harvesting efficiency and reducing the breakage rate of harvested ginger. It realizes fast, efficient, low-loss, and low-cost ginger harvesting operations.

[0007] The technical solution of the present application is a ginger harvesting machine, which comprises a frame, wherein it further comprises:

[0008] A seedling separating device is located at the front end of the upper part of the frame.

[0009] A seedling cutting device is located below the seedling separating device.

[0010] A seedling clamping and laying device is located behind the seedling separating device and at the top of the frame.

[0011] A conveying device is located at the bottom of the frame and is arranged in the front-rear direction of the frame.

[0012] A digging device is located in front of the conveying device and below the seedling cutting device.

[0013] A righting device is located above the conveying device.

[0014] In the present application, the seedling separating device comprises two symmetrical spiral rotating rollers, which are arranged obliquely along the height direction of the frame and are rotationally connected with the frame, and the spiral rotating rollers are thick at the top and thin at the bottom.

[0015] The seedling separating device comprises:

[0016] The upper rotating disc and the lower rotating disc are rotationally connected with the frame, the size of the upper rotating disc is larger than that of the lower rotating disc, and the upper rotating disc and the lower rotating disc are connected through a double helix structure;

[0017] The support columns are fixedly connected between the upper rotating disc and the lower rotating disc through a plurality of support columns arranged at intervals;

[0018] The double helix structure comprises two reverse spiral steel strips, the spiral steel strips are located on the outer side of the support columns and are fixedly connected with the support columns, and the upper end and the lower end of the spiral steel strips are fixedly connected with the rotating discs, respectively.

[0019] The seedling cutting device comprises two cutting knives arranged in an upper-lower staggered manner, and the rotating directions of the two cutting knives are opposite;

[0020] The cutting knives are arranged on a tool holder, and the tool holder is connected with the frame through a lead screw.

[0021] The seedling clamping and side laying device comprises a tooth-shaped clamping chain and a steel strip arranged opposite to the tooth-shaped clamping chain;

[0022] The front section of the tooth-shaped clamping chain is located behind the seedling separating device and is arranged along the length direction of the frame; the rear section of the tooth-shaped clamping chain is arranged obliquely towards the rear of the side of the frame;

[0023] The front end of the seedling clamping and side laying device is in the shape of a trumpet mouth.

[0024] There is a gap between the tooth-shaped clamping chain and the steel strip, and the gap between the frontmost end of the tooth-shaped clamping chain and the corresponding steel strip is the largest.

[0025] The tooth-shaped clamping chain comprises a clamping chain and a plurality of sprockets, and the clamping chain is wound on the outer side of the sprockets;

[0026] The sprocket located at the front section of the tooth-shaped clamping chain is arranged on a rotating support, and the sprocket located at the rear end of the tooth-shaped clamping chain is arranged on a fixed support, the fixed support is fixedly connected with the frame, and the rotating support is rotationally connected with the fixed support.

[0027] The seedling clamping and side laying device comprises an anti-blocking mechanism, which is arranged at the hinged joint of the fixed support and the rotating support,

[0028] The anti-blocking mechanism comprises a second spring, the rear end of the rotating support is fixedly provided with a first connecting column, one end of the fixed support is provided with a second connecting column, and the two ends of the second spring are connected with the first connecting column and the second connecting column, respectively.

[0029] The digging device comprises:

[0030] The digging shovel is located in front of the conveying device, and two ends thereof are connected with the frame through telescopic frames respectively, and a hydraulic oil cylinder is arranged on the telescopic frame;

[0031] The soil cutting disc knives are arranged in front of the digging shovel, and the two soil cutting disc knives are symmetrically arranged and inclined, and the soil cutting disc knives are fixedly connected with the telescopic frames behind the soil cutting disc knives respectively.

[0032] The righting device comprises two symmetrically arranged screw auger conveyors, and the screw auger conveyors are arranged on the upper surface of the conveying device;

[0033] The distance between the two screw auger conveyors is narrow in front and wide in back.

[0034] The digging device comprises two symmetrically arranged screw auger conveyors, and the screw auger conveyors are arranged on the upper surface of the conveying device;

[0035] The digging device comprises two symmetrically arranged screw auger conveyors, and the screw auger conveyors are arranged on the upper surface of the conveying device; BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present application;

[0037] Figure 2 It is a structural schematic diagram of the seedling separating device;

[0038] Figure 3 It is a structural schematic diagram of the seedling cutting device;

[0039] Figure 4 It is a structural schematic diagram of the belt transmission part;

[0040] Figure 5 It is a structural schematic diagram of the gear transmission part;

[0041] Figure 6 It is a top view structural schematic diagram of the seedling clamping and side laying device;

[0042] Figure 7 It is a side view structural schematic diagram of the seedling clamping and side laying device;

[0043] Figure 8 It is a structural schematic diagram of the digging device;

[0044] Figure 9 It is a structural schematic diagram of the conveying device and the righting device.

[0045] In the diagram: 1. Frame; 2. Seedling separating device; 3. Seedling cutting device; 4. Seedling clamping and side-laying device; 5. Digging device; 6. Straightening device; 7. Conveying device; 8. Spiral rotating roller; 9. Upper turntable; 10. Lower turntable; 11. Spiral steel bar; 12. Support column; 13. Disc cutter; 14. First belt; 15. Drive belt pulley; 16. Driven belt pulley; 17. Engine; 18. Tensioner; 19. First connecting rod; 20. First spring; 21. Power transmission shaft; 22. First rotating shaft; 23. First bevel gear; 24. Second bevel gear 25 Third bevel gear; 26 Fourth bevel gear; 27 Toothed clamping chain; 28 Steel bar; 29 Laying steel bar; 30 Clamping chain; 31 Drive sprocket; 32 Dial wheel; 33 Rotating bracket; 34 Fixed bracket; 35 Second spring; 36 First connecting column; 37 Second connecting column; 38 Tensioning sprocket; 39 Third connecting rod; 40 Third spring; 41 Excavating shovel; 42 Bracket; 43 Hydraulic cylinder; 44 Soil-cutting disc cutter; 45 Conveyor chain; 46 Spiral drilling auger; 47 Tracked walking device. Detailed Implementation

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] Specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0048] like Figure 1 As shown, the ginger harvester of the present invention includes a frame 1, a seedling separating device 2, a seedling cutting device 3, a seedling clamping and side-laying device 4, a digging device 5, a straightening device 6, and a conveying device 7. The seedling separating device 2 is located at the front end of the frame 1. The seedling clamping and side-laying device 4 is located behind the seedling separating device 2 and at the top of the frame 1. The seedling cutting device 3 is located below the seedling separating device 2. The digging device 5 is located below the seedling cutting device 3. The conveying device 7 is located at the bottom of the frame 1 and is arranged along the front-rear direction of the frame. The digging device 5 is located at the front end of the conveying device 7. The straightening device 6 is located above the conveying device 7 and is arranged along the conveying direction of the conveying device 7. Tracked walking devices 47 are provided on both sides of the frame 1, which drive the entire machine to move.

[0049] like Figure 2 As shown, the seedling separating device 2 is located at the front end of the frame. The seedling separating device includes two symmetrically arranged spiral rotating rollers 8. Both spiral rotating rollers are inclined along the height direction of the frame.

[0050] The spiral rotating roller 8 comprises an upper rotating disc 9 and a lower rotating disc 10, which are rotatably connected with the frame 1. In the embodiment, the upper rotating disc 9 and the lower rotating disc 10 are rotatably connected with the frame through rotating supports. The upper rotating disc and the lower rotating disc are connected through a double helix structure. The double helix structure comprises two helical steel strips 11 which are oppositely arranged and fixedly connected.

[0051] The spiral rotating roller 8 is in the shape of an inverted cone with a large diameter at the top and a small diameter at the bottom. In the embodiment, the diameter of the upper rotating disc 9 is larger than that of the lower rotating disc 10, and the upper rotating disc and the lower rotating disc are fixedly connected through a plurality of support columns 12. The support columns 12 are uniformly and spacedly arranged along the circumferential direction of the upper and lower rotating discs. The upper ends of the support columns 12 are uniformly and spacedly arranged along the circumferential surface of the lower surface of the upper rotating disc 9, and the top ends of the support columns 12 are fixedly connected with the lower surface of the upper rotating disc 9. The lower ends of the support columns 12 are uniformly and spacedly arranged along the circumferential surface of the upper surface of the lower rotating disc 10, and the bottom ends of the support columns 12 are fixedly connected with the upper surface of the lower rotating disc 10.

[0052] The outer side of the support column is provided with two helical steel strips 11 which are oppositely arranged and fixedly connected. The upper ends of the two helical steel strips 11 are fixedly connected with the lower surface of the upper rotating disc 9, and the lower ends of the two helical steel strips 11 are fixedly connected with the upper surface of the lower rotating disc 10. The helical steel strips 11 are fixedly connected with the support columns 12.

[0053] Through the two symmetrically arranged spiral rotating rollers 8 located at the front end of the frame, the spiral rotating roller 8 first contacts with the ginger seedlings during the working process of the harvester. During the contact with the ginger seedlings, the spiral rotating roller rolls. Through the two symmetrically arranged spiral rotating rollers, the ginger seedlings in the harvesting row can be completely separated from the ginger seedlings on both sides during the harvesting, thereby reducing the mutual entanglement of the ginger seedlings during the harvesting of the ginger.

[0054] As shown in Figure 3 , the ginger seedling cutting device comprises two disc cutters 13 which are arranged in an upper and lower staggered manner and have opposite rotating directions. During the relative rotation of the two disc cutters, the ginger seedlings are cut.

[0055] The two disc cutters 13 are respectively connected with the engine through a transmission mechanism. The transmission mechanism transmits the power of the engine to the disc cutters, thereby driving the disc cutters to rotate.

[0056] The transmission mechanism in the embodiment comprises a belt transmission part and a gear transmission part.

[0057] As shown in Figure 4As shown, the belt transmission part includes a first belt 14 arranged on the side of the frame. In this embodiment, the first belt is arranged on the side of the frame. The first belt 14 is wound around a driving pulley 15 and a driven pulley 16, wherein the driving pulley 15 is fixedly connected with the output shaft of the engine 17, and the driven pulley 16 is connected with the gear transmission part. The inner side of the first belt 14 is provided with a tension pulley 18, which is connected with the frame through a first connecting rod 19 and a first spring 20 in sequence. Under the support of the tension pulley 20, the first belt 14 is in a V shape, and the tension pulley 18 plays a tensioning role on the first belt 14. Under the elastic force of the first spring 20, the tension pulley 18 is always in a tensioning state, and the tensioning force of the tension pulley 18 on the first belt 14 is always constant, so that the power transmission can be ensured when the cutting knife adjusts the height up and down.

[0058] As shown in the figure, Figure 5 The gear transmission part includes a power transmission shaft 21 and four groups of bevel gear sets, each group of bevel gear sets including two mutually meshing bevel gears. The driven pulley 16 is fixed on the end of the power transmission shaft 21. Through the belt transmission part, the output power of the engine is transmitted to the power transmission shaft.

[0059] The power transmission shaft is respectively connected with the cutting knife through two groups of bevel gear sets. In this embodiment, one of the cutting knives is taken as an example to specifically describe the transmission connection structure between the power transmission shaft and the cutting knife.

[0060] During the rotation of the power transmission shaft, the power is first transmitted to the first rotating shaft 22 through the first bevel gear set. The first bevel gear set includes a first bevel gear 23 and a second bevel gear 24, the first bevel gear 23 is fixed on the power transmission shaft 21, and the second bevel gear 24 is fixed on one end of the first rotating shaft 22. Through the mutual meshing between the first bevel gear 23 and the second bevel gear 24, the power of the power transmission shaft 21 is transmitted to the first rotating shaft 22 during the rotation of the power transmission shaft 21.

[0061] The first rotating shaft 22 and the rotating shaft of the disc cutting knife are connected through the second bevel gear set. The second bevel gear set includes a third bevel gear 25 and a fourth bevel gear 26, the third bevel gear 25 is fixed on the other end of the first rotating shaft 22, and the fourth bevel gear 26 is fixedly connected with the rotating shaft of the disc cutting knife. Through the mutual meshing between the third bevel gear 25 and the fourth bevel gear 26, the power of the first rotating shaft 22 is transmitted to the disc cutting knife, so as to realize the rotation of the disc cutting knife.

[0062] The power transmission process of the other disc cutting knife is also as described above, so it is not repeated here. Through the gear transmission part, the reverse rotation between the two cutting knives is realized.

[0063] In the embodiment, the cutter is connected with the cutter holder, and the cutter holder is connected with the machine frame through a lead screw. The top of the lead screw is provided with a crank handle. During rotation of the crank handle, the lead screw drives the cutter holder to move up and down along the vertical direction, so that the height direction of the lead screw is adjusted to meet different cutting heights and terrains.

[0064] As shown in Figure 6 to Figure 7 The seedling clamping and side laying device comprises a tooth-shaped clamping chain 27 and a steel strip 28. Both the tooth-shaped clamping chain and the steel strip are arranged in a broken line. The front section of the tooth-shaped clamping chain 27 and the steel strip 28 is arranged along the front-rear direction of the machine frame, and the rear section of the tooth-shaped clamping chain and the steel strip is arranged obliquely towards the rear of the side of the machine frame.

[0065] The tooth-shaped clamping chain 27 and the steel strip 28 are located in the same horizontal plane, and there is a gap between the tooth-shaped clamping chain and the steel strip. The gap between the front section of the tooth-shaped clamping chain 27 and the corresponding steel strip 28 is in a spreader shape, that is, the distance between the front end of the tooth-shaped clamping chain and the corresponding steel strip is greater than the distance between the rear end of the tooth-shaped clamping chain and the corresponding steel strip. The distance between the rear end of the tooth-shaped clamping chain and the corresponding steel strip is in an equal gap state.

[0066] In the embodiment, the distance between the front end of the tooth-shaped clamping chain 27 and the corresponding front end of the steel strip 28 is in a trumpet shape. The ginger seedlings enter the gap between the tooth-shaped clamping chain and the steel strip from the trumpet-shaped gap at the front end of the seedling clamping and side laying device. During the conveying process of the tooth-shaped clamping chain, the ginger seedlings are conveyed from the front end of the seedling clamping and side laying device to the rear end of the seedling clamping and side laying device. Through the laying steel strip 29 at the rear end of the tooth-shaped clamping chain, the lateral laying of the ginger seedlings after cutting is realized, which facilitates the later collection of the ginger seedlings.

[0067] In the seedling clamping and side laying device, the structure of the tooth-shaped clamping chain and the steel strip is set, which reduces the overall weight of the machine while completing the clamping and conveying action.

[0068] The tooth-shaped clamping chain 27 comprises a clamping chain 30 and a plurality of sprockets. The clamping chain 30 is wound outside the plurality of sprockets. The sprocket at the last end of the seedling clamping and side laying device is connected with a hydraulic motor, so the sprocket is a driving sprocket 31. During rotation of the driving sprocket 31, the clamping chain 30 is driven to rotate, thereby realizing the clamping and rotation of the entire tooth-shaped clamping chain.

[0069] A push wheel 32 is arranged at the feeding inlet of the seedling clamping and side laying device. In the embodiment, one sprocket at the front end of the tooth-shaped clamping chain is coaxially fixedly connected with the push wheel 32. The center of the sprocket is fixed with a center shaft, and the push wheel is fixed on the center shaft. During rotation of the sprocket, the push wheel is rotated. The push wheel can assist the feeding of the ginger seedlings.

[0070] The front section of the toothed clamping chain is provided with a blockage prevention mechanism. The sprocket of the front section of the toothed clamping chain is arranged on a rotating support 33, and the sprocket of the rear section of the toothed clamping chain is arranged on a fixed support 34. The fixed support 34 is located below the rear section of the toothed clamping chain and is arranged in parallel between the fixed support and the rear section of the toothed clamping chain, and the fixed support 34 is fixedly connected with the rack. The rotating support 33 is located below the front section of the toothed clamping chain and is arranged in parallel between the rotating support and the front section of the toothed clamping chain. The rotating support 33 is located below the fixed support 34, and the rear end of the rotating support 33 is rotatably connected with the fixed support 34.

[0071] The blockage prevention mechanism is arranged at the rotating connection between the rotating support 33 and the fixed support 34. The blockage prevention mechanism comprises a second spring 35, the rear end of the rotating support 33 is fixedly provided with a first connecting column 36, one end of the fixed support 34 is fixedly provided with a second connecting column 37, and the two ends of the second spring 35 are respectively connected with the first connecting column 36 and the second connecting column 37.

[0072] When the feeding amount of the ginger seedlings at the front end of the seedling clamping and side laying device is too large, the rotating support 33 will rotate around the fixed support 34, at this time, the size of the horn mouth at the front end of the seedling clamping and side laying device will increase accordingly, so as to ensure that the ginger seedlings can smoothly pass through and prevent blockage. When the feeding amount of the ginger seedlings at the front end of the seedling clamping and side laying device is reduced, the rotating support is automatically reset under the elastic force of the second spring 35, so that the size of the horn mouth at the front end of the seedling clamping and side laying device is automatically reset to the initial state. Therefore, through the blockage prevention mechanism, the seedling clamping and side laying device can be automatically opened and closed according to the feeding amount of the ginger seedlings, so as to ensure that the ginger seedlings can smoothly pass through the seedling clamping and side laying device.

[0073] The rear end of the toothed clamping chain is provided with a plurality of tension sprockets 38. The tension sprockets 38 are located on the inner side of the clamping chain 30, and the tension sprockets 38 are in meshing transmission with the inner side of the clamping chain. The tension sprockets 38 are connected with the fixed support 34 through a third connecting rod 39 and a third spring 40 in sequence. Through the tension sprockets 38, it is ensured that the ginger seedlings are in a clamping state during the clamping and conveying process.

[0074] The digging device comprises a digging shovel and a soil cutting disc cutter.

[0075] As shown in Figure 8 The bottom of the rack is provided with a digging shovel 41 at the front end. The two ends of the digging shovel 41 are connected with the rack through supports 42. The supports are telescopic supports, and the supports 42 are provided with hydraulic oil cylinders 43. During the operation of the hydraulic oil cylinders, the supports 42 and the digging shovels 41 connected with the supports are driven to perform lifting movement, so as to meet the digging requirements of different depths.

[0076] In this embodiment, the telescopic frame includes a fixed frame and a lifting frame, the upper part of the fixed frame is fixedly connected with the side surface of the rack, and the lower part of the fixed frame is slidably connected with the lifting frame. A sliding groove is arranged in the fixed frame, and the lifting frame is slidably arranged in the sliding groove. The cylinder body of the lifting oil cylinder is fixedly connected with the fixed frame, and the piston of the lifting oil cylinder is connected with the lifting frame. During the action of the lifting oil cylinder, the piston drives the lifting frame to slide along the sliding groove of the fixed frame, so that the lifting of the lifting frame and the digging shovel is realized.

[0077] The front of the digging shovel is provided with two soil cutting disc knives 44, which are symmetrically arranged between the two soil cutting disc knives, and are fixedly connected with the rear support 42 respectively. The soil cutting disc knife 44 is arranged in an inclined manner, which can perform soil cutting action before the digging shovel digs, thereby reducing the resistance of subsequent ginger digging.

[0078] The rear of the digging shovel 41 is provided with a conveying device, which includes a conveying chain 45, a conveying chain wheel and a conveying chain drive motor. The conveying chain 45 is wound on the conveying chain wheel, and the output shaft of the conveying chain drive motor is connected with the conveying chain wheel. During the action of the conveying chain drive motor, the conveying chain wheel connected therewith is driven to rotate, thereby driving the conveying chain transmission. During the conveying chain transmission, the dug ginger can be conveyed from the front end to the rear end of the conveying chain.

[0079] As shown in Figure 9 The upper part of the conveying chain is provided with a righting device. The righting device includes two symmetrically arranged screw augers 46, and the distance between the two screw augers 46 is narrow in front and wide in back. The screw auger is driven by a hydraulic motor arranged at the rear part thereof. The screw auger is arranged along the upper surface of the conveying chain.

[0080] The hydraulic motor drives the screw auger to rotate 46, and after the screw auger drills the soil, the digging shovel 41 supports the bottom and cuts the soil. The ginger is moved upward along the conveying chain under the action of the screw auger 46. When the ginger approaches the left screw auger 46, it will be placed on the left side by the left screw auger. Similarly, the right screw auger can also have the same effect.

[0081] During the movement of the ginger along with the conveying chain, the conveying chain 45 can clean the soil of the ginger, and the ginger is poured under the action of the screw auger and conveyed to the rear of the machine by the conveying chain. In the later stage, the ginger is collected by artificial collection to complete the harvesting.

[0082] The working principle of the fresh ginger harvester is described as follows. During forward movement of the fresh ginger harvester, the seedling separating device 2 first contacts the ginger seedlings, and the ginger seedlings on the ridge being harvested can be completely separated from the ginger seedlings on both sides during rotation of the spiral rotating rollers 8 on both sides. The ginger seedlings flow into the front end of the clamping side laying device 4, and during transmission of the gear clamping chain 27, the ginger seedlings gradually enter between the gear clamping chain 27 and the steel bar 28 from the feeding inlet of the clamping side laying device 4 and are gradually conveyed to the rear part of one side of the frame from the feeding inlet of the clamping side laying device. During the conveying of the ginger seedlings, the ginger seedlings are cut by the lower cutting device 3. The cut ginger seedlings are conveyed to one side of the frame along with the gear clamping chain 27, so that the ginger seedlings are laid laterally.

[0083] At the same time, the soil cutting disc cutter 44 performs soil cutting action, and then the rear digging shovel 41 digs into the soil to dig the fresh ginger in the soil, and the spiral earth boring auger 46 breaks the soil. The dug fresh ginger moves along the conveying device under the action of the spiral earth boring auger 46. The spiral earth boring auger realizes dumping and laying of the fresh ginger on the conveying device. The fresh ginger can also perform soil cleaning action on the conveying chain 45 and is finally conveyed to the rear of the frame by the conveying chain. In the later stage, manual collection of the ginger seedlings and the fresh ginger is facilitated, and the harvesting of the fresh ginger is completed.

[0084] The above describes the fresh ginger harvester provided by the present application in detail. The principles and implementation manners of the present application are described by using specific examples in this paper, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application. The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined in this paper can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown in this paper, but will conform to the widest scope consistent with the principles and novel features disclosed in this paper.

Claims

1. A ginger harvester comprising a frame, characterised in that, Also comprising: a seedling separating device at the front end of the upper part of the frame; a seedling cutting device below the seedling separating device; a seedling clamping and side laying device at the rear of the seedling separating device and on the top of the frame; a conveying device at the bottom of the frame and arranged along the front-rear direction of the frame; a digging device in front of the conveying device and below the seedling cutting device; a righting device above the conveying device; the seedling separating device comprises two symmetrical spiral rotating rollers arranged along the height direction of the frame and rotatably connected with the frame, and the spiral rotating rollers are thick at the top and thin at the bottom; the seedling separating device comprises: an upper rotating disc and a lower rotating disc rotatably connected with the frame, the size of the upper rotating disc is larger than that of the lower rotating disc, and the upper rotating disc and the lower rotating disc are connected by a double helix structure; a support column, the upper and lower rotating discs are fixedly connected by a plurality of support columns arranged at intervals; a double helix structure, comprising two opposite spiral steel strips arranged on the outer side of the support column and fixedly connected with the support column, and the upper and lower ends of the spiral steel strips are fixedly connected with the rotating discs; the seedling clamping and side laying device comprises a toothed clamping chain and a steel strip arranged opposite to the toothed clamping chain; the front section of the toothed clamping chain is arranged at the rear of the seedling separating device and along the length direction of the frame; the rear section of the toothed clamping chain is arranged obliquely towards the rear of the side of the frame; the front end of the seedling clamping and side laying device is in the shape of a trumpet mouth; there is a gap between the toothed clamping chain and the steel strip, and the gap between the front end of the toothed clamping chain and the corresponding steel strip is the largest; the toothed clamping chain comprises a clamping chain and a plurality of sprockets, and the clamping chain is wound around the outer side of the sprockets; the sprocket at the front section of the toothed clamping chain is arranged on a rotating support, and the sprocket at the rear end of the toothed clamping chain is arranged on a fixed support, the fixed support is fixedly connected with the frame, and the rotating support is rotatably connected with the fixed support; the seedling clamping and side laying device comprises an anti-blocking mechanism arranged at the hinge between the fixed support and the rotating support; the anti-blocking mechanism comprises a second spring, the rear end of the rotating support is fixedly connected with a first connecting column, one end of the fixed support is provided with a second connecting column, and the two ends of the second spring are connected with the first connecting column and the second connecting column respectively.

2. The ginger harvester according to claim 1, wherein the seedling cutting device comprises two cutting knives arranged in an upper-lower staggered manner, and the rotating directions of the two cutting knives are opposite; the cutting knives are arranged on a cutter holder, and the cutter holder is connected with the frame through a lead screw.

3. The ginger harvester according to claim 1, wherein the digging device comprises: a digging shovel arranged in front of the conveying device, and the two ends of the digging shovel are connected with the frame through telescopic supports, and a hydraulic oil cylinder is arranged on the telescopic support; two cutting disc knives arranged in a symmetrical manner and obliquely arranged in front of the digging shovel, and the cutting disc knives are fixedly connected with the telescopic supports behind them.

4. The ginger harvester according to claim 1, wherein the righting device comprises two symmetrical spiral earth boring augers arranged in close contact with the upper surface of the conveying device; the distance between the two spiral earth boring augers is narrow in front and wide at the rear.

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