CN110839392A - Clamping and conveying device of garlic combine harvester - Google Patents

Abstract

The invention relates to a clamping and conveying device of a garlic combine harvester, and belongs to the technical field of agricultural machinery. The device comprises a clamping conveying chain which consists of a left clamping conveying chain and a right clamping conveying chain and is provided with a front section and a rear section; the lower part of the clamping conveying chain is provided with an aligning conveying chain which starts from the tail end of the front section and gradually forks and separates from the clamping conveying chain after being transferred, the aligning conveying chain consists of a surrounding aligning chain and a rail pressing hairbrush arranged on an aligning conveying rail, and the extending end of the rail pressing hairbrush is contacted with the adjacent side of the aligning chain; the output end of the aligning conveying chain is provided with a seedling cutter. The invention properly solves the difficult problems of gathering, arranging and stably conveying the fallen garlic after being picked up and reliably completing seedling cutting by the reasonable sectional design of the clamping conveying chain and the organic combination of the clamping conveying chain and the aligning conveying chain.

Description

Clamping and conveying device of garlic combine harvester

Technical Field

The invention relates to a harvester, in particular to a clamping and conveying device of a garlic combine harvester, and belongs to the technical field of agricultural machinery.

Background

The garlic is one of important economic crops, and the harvesting procedures of the garlic comprise digging and laying, seedling shearing, root cutting, soil removal and cleaning, collection and bagging and the like. Because garlic is seriously lodging during the harvesting period, how to convey the garlic in a required posture during the harvesting process so as to reliably complete the cutting of garlic sprouts on the basis of the posture is one of the difficult problems of garlic harvesting.

The retrieval shows that Chinese patent applications with application numbers of 200810242913.9 and 201010204891 disclose a garlic combine harvester and a garlic combine harvester, wherein the garlic combine harvester comprises a seedling supporting mechanism, a digging shovel, a soil removing mechanism, a fruit seedling separating mechanism and a clamping chain conveying mechanism which is arranged above the digging shovel, the soil removing mechanism and the fruit seedling separating mechanism, the belt clamping conveying mechanism is arranged below the clamping chain conveying mechanism and inclines downwards, and the lower end of the belt clamping conveying mechanism is arranged below the disc cutter separating mechanism; the latter is characterized in that the middle lower part of the frame is provided with an aligning chain seedling cutting device connected with the conveying chain; the aligning chain seedling cutting device comprises a loop aligning chain extending from front to back; hook-shaped pusher dogs are arranged on the aligning chain at intervals, and the loop plane of the aligning chain and the conveying plane of the conveying chain form an included angle inclined from front to back; a cutting blade is fixed at the rear end outlet of the alignment chain. According to the technical scheme, before the garlic seedlings enter a disc cutter to separate and cut the garlic seedlings from the fruits, the garlic seedlings are clamped by a belt clamping and conveying mechanism besides the clamping chain conveying mechanism at the upper parts; the belt clamping conveying mechanism is positioned below the clamping chain conveying mechanism and inclines downwards, and the clamping force of the belt clamping conveying mechanism is adjusted to be smaller than that of the clamping chain conveying mechanism, so that the garlic seedlings can be adjusted and aligned in the height position of the garlic fruits in the conveying process under the action of the upper clamping mechanism and the lower clamping mechanism, namely, the height positions of the garlic fruits relative to the disc cutter are adjusted to be consistent before the garlic seedlings are separated, and the lengths of the garlic seedlings left on the separated garlic fruits are consistent.

However, applying such prior art techniques to multi-row garlic harvesting, where the problem of lodging needs to be solved, reveals the following major problems:

1) the clamping conveying chain taking the aligning conveying chain as a boundary and the front section and the rear section are both rigidly clamped or clamped by means of elastic acting force, and are only suitable for pulling the garlic heads down by means of the aligning conveying chain to align the garlic stems, so that the garlic heads with stems after seedling cutting are consistent; but is not suitable for supporting the lodging garlic seedlings, because practice shows that once the garlic seedlings are elastically clamped in the same direction as the original lodging direction, the garlic seedlings are easily bent and blocked, and consequently, the garlic seedlings cannot be smoothly pulled down or even pulled off by aligning with the conveying chain, and reliable and stable seedling cutting cannot be ensured.

2) The spiral pressure springs sleeved on the sliding pins at intervals are used for pressing the chain track block, and the length, the working stroke and the length of the sliding pin supporting track hole are continuously overlapped to occupy the width space dimension by being limited by the pressure spring, so that the minimum width of single-row clamping conveying is larger than the row spacing of the garlic, and the garlic harvester cannot be applied to a multi-row garlic combine harvester.

In addition, the clamping conveying chain, the aligning conveying chain and the seedling cutter in the prior art adopt respective independent power transmission, synchronous errors exist in clamping conveying and aligning conveying, and the coordination and stability of conveying are difficult to guarantee.

In addition, Chinese patent application with application numbers of 2012102465146, 2017102122350 and 2018111991152 discloses a self-propelled garlic combine harvester, a garlic harvester and a multi-row garlic combine harvester, or the clamping and conveying adopt double-rubber-belt full conveying path clamping without the function of cutting the garlic after aligning the garlic heads; or the garlic bulbs are pulled downwards during the alignment, expansion and conveying by adopting a guide sliding rod structure which has a certain expansion angle with the clamping conveying belt, and the clamping conveying belt has no device for releasing the clamping force, so that the garlic seedlings are easily broken to cause loss; or the seedling cutting is aligned by adopting the bottom support, and the bottom support alignment is difficult to realize consistency due to the inconsistent root discs left at the bottom of the garlic; the problem of stable transportation of the fallen garlic in a required posture after being harvested is not solved.

Disclosure of Invention

The primary objects of the present invention are: aiming at the problems in the prior art, the clamping and conveying device of the garlic combine harvester is capable of conveying the harvested lodging garlic in a required posture to ensure stable and reliable seedling cutting, has a compact structure and is suitable for multi-row garlic combined harvesting.

The invention further aims to provide a garlic combine harvester clamping and conveying device with unified power of the clamping and conveying chain, the aligning and conveying chain and the seedling cutter, so that coordination and stability of clamping and aligning conveying are ensured.

In order to achieve the above primary purpose, the clamping and conveying device of the garlic combine harvester has the following basic technical scheme: the device comprises a clamping conveying chain, wherein the front end of the clamping conveying chain is connected with the output end of a digging shovel which extends forwards from a harvesting rack, and the clamping conveying chain consists of a left clamping conveying chain and a right clamping conveying chain which are encircled in pairs in the conveying direction;

the inner side of the outer chain ring of the left clamping conveying chain leans against the outer side of an outer side inner rail of a left chain box fixedly connected with a harvesting rack, U-shaped plate springs which push the front section of the inner chain ring of the left clamping conveying chain to the right side through movable rail blocks are arranged at intervals on the front section of the inner side of the outer side inner rail of the left chain box, and the U-shaped plate springs are arranged in pairs at positions opposite to the openings; the rear section of the inner side of the inner rail at the outer side of the left chain box is provided with a rear fixed rail in the left chain box for keeping the rear section of the inner chain ring of the left clamping conveying chain straight;

the inner side of an outer chain ring of the right clamping conveying chain leans against the outer side of an outer inner rail of a right chain box fixedly connected with a harvesting rack, the front section of the inner side of the outer inner rail of the right chain box is provided with a front fixed rail in the right chain box for keeping the front section of an inner chain ring of the right clamping conveying chain straight, a seedling supporting brush supporting plate for separating the inner chain ring of the right clamping conveying chain from the inner chain ring of the left clamping conveying chain is arranged at the rear section of the inner rail corresponding to the outer side of the right chain box, and a seedling supporting brush in contact with the inner chain ring of the left clamping conveying chain is arranged on the left side of the seedling supporting brush supporting plate;

the lower part of the clamping conveying chain is provided with an aligning conveying chain which starts from the tail end of the inner front section of the outer inner rail of the left chain box and gradually forks the clamping conveying chain after being switched, the aligning conveying chain consists of a surrounding aligning chain and a rail pressing brush arranged on an aligning conveying rail, and the extending end of the rail pressing brush is contacted with the adjacent side of the aligning chain; the output end of the aligning conveying chain is provided with a seedling cutter.

When harvesting, when the lifted lodging garlic enters the front end of the clamping conveying chain, the digging shovel finishes the working procedures of digging off garlic roots and loosening the soil, the lower part of garlic seedlings is clamped under the clamping action of the left clamping conveying chain and the right clamping conveying chain which are mutually meshed by the U-shaped plate spring, so that the garlic can be gathered up, pulled up and conveyed backwards, when the garlic reaches the rear section, the garlic head part enters the lower part of the aligning conveying chain, and the garlic seedlings are continuously kept between the left clamping conveying chain and the seedling lifting brush at the upper part; then, the garlic shoots are gradually straightened into a stable vertical state by the upper and lower shoot supporting brushes and the rail pressing brushes due to the gradual forking of the aligning conveying chain and the clamping conveying chain until the garlic shoots reach the output end of the aligning conveying chain and are cut off by the seedling cutter.

On the basis of the sectional design of the clamping conveying chain and the organic combination structure of the clamping conveying chain and the aligning conveying chain, the seedling supporting brush structure for clamping the rear section of the conveying chain with flexible clamping force is reasonably designed, so that garlic seedlings which are forcedly conveyed in by the front section after being obtained enter the aligning conveying chain at the garlic head part, and the garlic seedlings at the upper part are only subjected to the shifting of the inner chain ring of the left clamping conveying chain and the flexible supporting action of the seedling supporting brush, so that the garlic seedlings can be pulled down and erected very smoothly without being bent and blocked, and the subsequent stable seedling cutting is ensured; the unique U-shaped plate spring structures which are arranged in pairs at the opposite positions of the openings not only provide the required elastic pressing acting force through the opening and closing of the openings, but also can directly support the chain track block to bear the vertical pulling force when the garlic is pulled up; and the opening and closing direction occupies much less space than the row spacing of the garlic, so that a plurality of single rows can be clamped and conveyed to be applied to a multi-row garlic combine harvester in parallel,

in order to achieve a further purpose, the left clamping conveying chain and the right clamping conveying chain are respectively driven by a left driving wheel and a right driving wheel, the right driving wheel is coupled with a rotary power input shaft through a right vertical shaft driven by a bevel gear pair, and the left driving wheel is coupled with the power input shaft through a left vertical shaft driven by a carrier gear pair behind the bevel gear pair; the lower parts of the vertical shafts on the left side and the right side are respectively in transmission connection with a left power output shaft and a right power output shaft through a transition gear pair, and the left power output shaft and the right power output shaft are respectively in driving shaft coupling with a rotating shaft of the disc blade and an alignment chain of the alignment conveying chain through a universal coupling mechanism.

Therefore, the left clamping conveying chain and the right clamping conveying chain of the clamping conveying chain are in series transmission through the same power source through a gear gap bridge, and then are in transition through the gear and the universal coupling mechanism respectively to realize parallel transmission of the aligning conveying chain and the seedling cutter on a series basis, so that the transmission structure is simple, convenient and reasonable, the coordination and the stability of the clamping conveying and the aligning conveying can be ensured, and the required speed ratio regulation and control can be realized by means of the relationship of the gear transmission ratio.

The invention further perfects that the central track surface of the left clamping conveying chain is higher than the central track surface of the right clamping conveying chain by 3-4 link plates.

The invention is further perfected in that the inner rear section of the inner rail at the outer side of the right chain box is provided with a rear fixed rail which guides the inner chain ring of the right clamping conveying chain into the straight right chain box.

The invention further perfects that the output end rail pressing brush side of the aligning conveying chain is provided with a seedling cutting knife formed by disc blades in the blade seat.

The invention is further perfected in that the periphery of the disc blade is a saw-tooth-shaped cutting edge, and the cutting edge of the blade is positioned in the groove of the seedling pressing plate above the tail end of the aligning chain.

In a word, the invention properly solves the problem that the lodging garlic is gathered and the tidying posture is stably conveyed after being picked up, thereby reliably completing the seedling cutting.

Drawings

The invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of a garlic combine harvester using the clamping and conveying device of the invention.

Fig. 2 is a schematic structural diagram of a gripping and conveying device frame body according to an embodiment of the invention.

Fig. 3 is a schematic perspective view of the embodiment of fig. 2.

Figure 4 is a schematic partially cut-away perspective view of the embodiment of figure 2 from another perspective.

Fig. 5 is a schematic top view of the gripping conveyor chain of the embodiment of fig. 2.

Fig. 6 is a schematic top view of the aligned conveyor chain of the embodiment of fig. 2.

Fig. 7 is a perspective view of the aligning conveyor chain of the embodiment of fig. 2.

Detailed Description

Example one

The holding and conveying device of the embodiment is arranged on a harvesting platform 3 at the front part of the multi-row garlic combine harvester shown in figure 1. A crawler-type walking chassis 9 of the combine harvester is provided with a garlic head lifting clear soil conveying device 10 and a self-unloading fruit collecting bin 11, the front part of the combine harvester is provided with a conveying rod chain device 2 for collecting garlic heads and discharging grass and a harvesting table 3 capable of floating up and down through a harvesting table mounting frame 1 capable of rotating left and right, the front end of the harvesting table 3 is provided with a plurality of one-way cutting tables 5 supported on depth limiting wheels 4 on two sides, each one-way cutting table 5 is provided with a clamping conveying chain along the conveying direction from low to high, a digging shovel 6 extending forwards is arranged below the one-way cutting table 5, and the front end of the clamping conveying chain is connected with the output end of the digging shovel 6.

As shown in figures 2, 3 and 4, the single-way header 5 of the embodiment comprises a single-way header frame 5-1, a left clamping conveyor chain 5-3, a right clamping conveyor chain 5-4, an aligning conveyor chain 5-5, an aligning conveying pressure rail 5-6, a seedling cutting knife 5-7, a gear transmission device 5-8 and the like. Wherein, the one-way cutting table frame 5-1 with low front and high back is a mounting base support, the middle part is a left and right caterpillar track box 5-10, 5-11 of a conveying chain welded by steel plates, the back part is welded with a transmission pipe column 5-12, and the back upper part is provided with a back mounting plate 5-13; the upper support 5-14 is a frame beam structure, the front end of the upper support is respectively welded with the upper sides of the left and right caterpillar track boxes 5-10 and 5-11, the rear end of the upper support is welded with the transmission pipe column 5-12, and the middle of the upper support is provided with a front mounting plate 5-15; the lower support 5-16 is a frame beam column structure, the front end of the lower support is respectively welded with the lower sides of the front parts of the left and right caterpillar track boxes 5-10 and 5-11, the rear upper end of the lower support is respectively welded with the lower sides of the rear parts of the left and right caterpillar track boxes 5-10 and 5-11, the tail end of the lower support is welded with a lower mounting plate 5-17, and the front and rear positions of the left and right longitudinal beams of the lower support are fixedly provided with a front hitching pin 5-18 and a rear hit; left and right upper mounting lugs 5-21 for mounting a grain lifting device 8 are respectively arranged above the front ends of the left and right caterpillar track boxes 5-10 and 5-11 of the conveying chain, and lower mounting lugs 5-20 for mounting a grain dividing device 7 are fixedly arranged on two sides below.

The clamping conveying chain is mainly composed of a left clamping conveying chain 5-3, a right clamping conveying chain 5-4, left and right driving wheels 5-81 and 5-82 of the conveying chains, seedling supporting brushes 5-46 and the like as shown in figures 4 and 5, the left and right clamping conveying chains 5-3 and 5-4 are in a structural form that a pair of toothed plates are arranged at intervals and are respectively arranged in a left and right chain track boxes 5-10 and 5-11, and the central track plane of the left clamping conveying chain 5-3 is higher than the central track plane of the right clamping conveying chain 5-4 by 3-4 chain plates, so that garlic seedlings can be elastically pressed and are in wavy distortion, and are clamped more stably and reliably, and unstable clamping caused by the top of chain teeth is avoided; the inner sides of the front ends of the two chains are installed in a tooth-to-tooth mode, the left driving wheel 5-81 and the right driving wheel 5-82 of the conveying chain are located at the rear end, the inner side running track of the left clamping conveying chain 5-3 is sequentially composed of the left driving wheel 5-81, the rear fixed track 5-31 in the left chain box, the movable track block 5-32, the left tensioning wheel 5-33 and the outer side inner track 5-34 of the left chain box in a counterclockwise direction, and the inner front section of the outer side inner track 5-34 of the left chain box is provided with paired U-shaped plate springs 5-35 with opposite openings and one side close to the corresponding movable track block 5-32 at intervals, so that the movable track block 5-32 presses the conveying chain at the end to the right clamping conveying chain 5-4 under the action force of the; the inner side running track of the right clamping conveying chain 5-4 is sequentially composed of a right driving wheel 5-82, a rear fixed track 5-41 in a right chain box, a front fixed track 5-42 in the right chain box, a right tension wheel 5-43 and an outer side inner track 5-44 of the right chain box in a clockwise direction, the rear fixed track 5-41 in the right chain box and a seedling supporting brush support plate 5-45 form an inner side track at the rear part of the right clamping conveying chain 5-4, the section of chain leaves the left clamping conveying chain 5-3 outwards and is not meshed, and the section of left clamping conveying chain 5-3 and the seedling supporting brush 5-46 form flexible supporting conveying. The rear fixed rails 5-41 are arranged at the rear sections of the inner sides of the inner rails 5-44 at the outer sides of the right chain boxes and used for guiding the inner chain rings of the right clamping conveying chains 5-4 into the straight right chain boxes, so that the transmission of the right chain boxes is more stable and reliable.

The aligning conveyor chain 5-5 is installed below the holding conveyor chain as shown in fig. 6 and 7, starting from the end of the inner front section of the outer inner rail of the left chain case and gradually diverging at a predetermined spreading angle after being transferred to the holding conveyor chain. The aligning conveying chain 5-5 comprises an aligning chain track support 5-51, an aligning chain 5-52, an aligning chain driving wheel 5-53, a right mounting support plate 5-54, a seedling pressing plate 5-56 and a short universal shaft 5-55, wherein the front end of the aligning chain track support 5-51 is arranged below the middle part of a right chain track box 5-11, the rear end of the aligning chain track support is arranged below the rear part of the right chain track box 5-11 through the right mounting support plate 5-54 and a bolt, the aligning chain driving wheel 5-53 is arranged at the rear end of the aligning chain track support 5-51, and a driving wheel shaft is connected with a right power output shaft 5-83 of the gear transmission device 5-8 through the short universal shaft 5-55; the aligning conveying chain 5-5 is formed by installing a roller chain with a bent plate and a deflector rod, is integrally installed on an aligning chain track support 5-51 and an aligning chain driving wheel 5-53, and a seedling pressing plate 5-56 is installed on the inner side of a right installation support plate 5-54. The aligning and conveying press rail 5-6 comprises a press rail support 5-61, a press rail brush 5-62, a rear support 5-63 and a left mounting support plate 5-64, the front end of the press rail support 5-61 is mounted below the middle part of the left caterpillar box 5-10, the rear end of the press rail support is mounted below the rear part of the left caterpillar box 5-10 through the left mounting support plate 5-64 and a bolt, the press rail brush 5-62 is mounted above the press rail support 5-61, bristles are positioned above a deflector rod of the aligning chain 5-5 and abut against a chain roller, the rear support 5-63 is welded at the tail end of the press rail support 5-61, and a seedling cutting knife support 5-72 is mounted inside the rear support; the seedling cutter 5-7 comprises a disc blade 5-71 and a blade seat 5-72, the periphery of the disc blade 5-71 is provided with a saw-toothed structure and a cutting edge, and is installed at the lower end shaft head of the blade seat 5-72 through a screw, and the cutting edge of the blade is positioned in the groove of the seedling pressing plate 5-56 above the tail end of the aligning chain 5-52, so that the garlic seedlings can be reliably cut off.

Referring to fig. 3 and 4, the left clamping conveying chain 5-3 and the right clamping conveying chain 5-4 are respectively driven by a left driving wheel 5-81 and a right driving wheel 5-82, the right driving wheel 5-82 is coupled with a right vertical shaft 5-87 driven by a bevel gear pair through a rotary power input shaft 5-85, and the left driving wheel 5-81 is coupled with a left vertical shaft 5-87 driven by a bevel gear pair on a bridging gear shaft 5-86 behind the bevel gear pair through a power input shaft 5-85; the lower parts of the vertical shafts 5-87 at the left side and the right side are respectively in transmission connection with a left power output shaft 5-84 and a right power output shaft 5-85 through transition gear pairs on transition gear shafts 5-88, and the left power output shaft 5-84 and the right power output shaft 5-85 are respectively in shaft coupling with the rotating shaft of the disc blade 5-71 and the aligning chain driving wheel 5-53 of the aligning conveying chain through a universal coupling mechanism.

In fact, the gear transmission device 5-8 is the transmission device of the single-way header 5, the whole device is arranged in a bridge gear box 5-23, a transmission pipe column 5-12 and a pinion box 5-22 at the rear end of a single-way header 5-1, a right upper extending shaft at the rear end is a power input shaft 5-85, the power input shaft is connected with a front extending shaft of a reversing gear box 1-25 through a long universal shaft 5-9, a front end gear of the power input shaft 5-85 is meshed with a gear at the upper end of a right vertical shaft 5-87, gears at the upper ends of the left vertical shaft 5-87 and the right vertical shaft realize power transmission through a bridge gear shaft 5-86, and then power is transmitted to a transition gear shaft 5-88 at the front side and left and right power output shafts 5-83 and 5-84 through gears at the middle lower parts of the vertical shafts 5-87 in sequence, and, And the right driving wheels 5-81 and 5-82 are used for driving the left clamping conveying chain 5-3 and the right clamping conveying chain 5-4. The blade seats 5-72 are arranged in the rear support seats 5-63 and are adjustable in height within a certain range together with the seedling pressing plates 5-56, and the upper end shaft heads are connected with the left power output shafts 5-84 through short universal shafts 5-55.

During harvesting operation, the single-path cutting tables arranged on the harvesting table in groups correspond to a row of garlic, the garlic dug by shoveling firstly enters the front section strong poking belt of the clamping and conveying device to be gathered and fed, when the garlic enters the rear section of the brush clamping and conveying device, the garlic and the aligning and conveying chain arranged at the lower part of the brush clamping and conveying device act together to align the garlic with the upper part of the garlic as a reference, straight garlic seedlings are stroked, finally the seedlings are cut by the seedling cutter at the output end, then the garlic seedlings are directly thrown into the upper straw discharging layer of the conveying rod chain device to be collected and conveyed and discharged rightwards, and naturally fall into the lower fruit conveying layer of the conveying rod chain device for transverse conveying and lifting, and then the garlic enters the lifting and soil cleaning and conveying device.

Experiments show that compared with the prior art, the clamping and conveying device adopting the embodiment has the following remarkable advantages: the toothed chain clamping and seedling pulling conveying adopts a special toothed shape suitable for the diameter of garlic seedlings, the front end of the clamping and conveying has a good gathering effect, the front section clamping and pulling section is pressed by a reed with a larger clamping force, the rear section aligning and conveying section is clamped by a chain and a brush with a small clamping force, and each section of the whole clamping and conveying chain is functionally designed into different clamping states, so that the phenomena of pulling missing lodging seedlings, clamping missing fine seedlings, breaking seedlings and the like in the process are avoided; and the whole clamping conveying section chain non-clamping working section is arranged in the left and right relatively closed track boxes, so that the way of carrying the mulching film by the chain is reduced.

Claims (6)

1. A clamping and conveying device of a garlic combine harvester comprises a clamping and conveying chain, wherein the front end of the clamping and conveying chain is connected with the output end of a digging shovel (6) which extends forwards from a harvesting rack (5-1), and the clamping and conveying chain consists of a left clamping and conveying chain (5-3) and a right clamping and conveying chain (5-4) which are encircled in the conveying direction in pairs; the method is characterized in that:

the inner side of an outer chain ring of the left clamping conveying chain (5-3) leans against the outer side of a left chain box outer side inner rail (5-34) fixedly connected with the harvesting rack (5-1), U-shaped plate springs (5-35) which push the front section of the inner chain ring of the left clamping conveying chain (5-3) to the right side through movable rail blocks (5-32) are arranged at intervals on the front section of the inner side of the left chain box outer side inner rail (5-34), and the U-shaped plate springs (5-35) are arranged in pairs at positions opposite to openings; the rear section of the inner side of the inner rail (5-34) at the outer side of the left chain box is provided with a rear fixed rail (5-31) in the left chain box for keeping the rear section of the inner chain ring of the left clamping conveying chain (5-3) straight;

the inner side of an outer chain ring of the right clamping conveying chain (5-4) leans against the outer side of a right chain box outer side inner rail (5-44) fixedly connected with a harvesting rack, a front fixed rail (5-42) in a right chain box for keeping the front section of an inner chain ring of the right clamping conveying chain straight is arranged at the front section of the inner side of the right chain box outer side inner rail (5-44), a seedling supporting brush support plate (5-45) for separating the inner chain ring of the right clamping conveying chain (5-4) from the inner chain ring of the left clamping conveying chain (5-3) is arranged at the rear section of the right chain box outer side inner rail (5-34), and a seedling supporting brush (5-46) contacted with the inner chain ring of the left clamping conveying chain (5-3) is arranged at the left side of the seedling supporting brush support plate (5-45);

the lower part of the clamping conveying chain is provided with an aligning conveying chain (5-5) which starts from the tail end of the inner front section of the outer inner rail (5-34) of the left chain box and gradually forks away from the clamping conveying chain after being switched, the aligning conveying chain (5-5) consists of a surrounding aligning chain (5-52) and a track pressing brush (5-62) arranged on an aligning conveying track pressing rail (5-6), and the extending end of the track pressing brush (5-62) is contacted with the adjacent side of the aligning chain (5-52); the output end of the aligning conveying chain (5-5) is provided with a seedling cutter (5-7).

2. The garlic combine gripper conveyor of claim 1, wherein: the left clamping conveying chain (5-3) and the right clamping conveying chain (5-4) are respectively driven by a left driving wheel (5-81) and a right driving wheel (5-82), the right driving wheel (5-82) is coupled with a rotary power input shaft (5-85) through a right vertical shaft (5-87) driven by a bevel gear pair, and the left driving wheel (5-81) is coupled with a left vertical shaft (5-87) driven by a power input shaft (5-85) through a bridging gear pair (5-86) behind the bevel gear pair; the lower parts of the vertical shafts (5-87) at the left side and the right side are respectively in transmission connection with a left power output shaft (5-84) and a right power output shaft (5-83) through a transition gear pair, and the left power output shaft (5-84) and the right power output shaft (5-83) are respectively in shaft coupling with the rotating shaft of the disc blade (5-71) and the aligning chain driving wheel (5-53) of the aligning conveying chain (5-5) through universal coupling mechanisms (5-55).

3. The garlic combine gripper conveyor of claim 2, wherein: the central track plane of the left clamping conveying chain (5-3) is higher than the central track plane of the right clamping conveying chain (5-4) by the thickness of 3-4 chain plates.

4. The garlic combine gripper conveyor of claim 3, wherein: the rear section of the inner side of the inner rail (5-44) at the outer side of the right chain box is provided with a rear fixed rail (5-41) which guides the inner chain ring of the right clamping conveying chain (5-4) to the straight right chain box.

5. The garlic combine gripper conveyor of claim 4, wherein: the output end rail pressing brush (5-62) of the aligning conveying chain (5-5) is provided with a seedling cutting knife (5-7) which is arranged in a blade seat (5-72) and is formed by an inner circular disc blade (5-71).

6. The garlic combine gripper conveyor of claim 5, wherein: the periphery of the disc blade is a serrated cutting edge, and the cutting edge of the blade is positioned in the groove of the seedling pressing plate above the tail end of the aligning chain.

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