JP4569193B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing device mounted on a combine or a harvester.

A handling cylinder is pivotally installed in the handling chamber, a second processing chamber is installed on one side of the handling chamber, and a second processing chamber is pivoted on the side of the handling chamber. A dust removal processing chamber is provided with a dust removal treatment cylinder to be received and processed. A swing sorting shelf is provided below the handling chamber, the second processing chamber, and the dust removal treatment chamber, and below the swing sorting shelf. the winnowing fan from sorting air feeding direction upstream side, top spiral, the threshing apparatus which is configured by providing a double-dip helix, sticks were formed by providing a projection on an endless rotary body in the rear of the threshing drum provided drop body, the endless rotation there is a technique for constituting the threshing apparatus so as to recover the particle sticks present in the straw discharge to be conveyed by the feed chain by rotating the body. (For example, refer to Patent Document 1).
JP-A-9-191758

In the technique as described above, the feed chain is arranged in an oblique state (from the front lower side to the rear upper side) with respect to the endless rotating body, so that the waste is stably not brought into contact with the endless rotating body. Therefore, a problem that can not be efficiently recovered sticks grains are present in the straw discharge has occurred.

The subject of this invention is providing the threshing apparatus which eliminates the above malfunctions and performs the collection | recovery of a small grain efficiently.

The above object of the present invention is achieved by the following configuration.
That is, in the first aspect of the present invention, and Jikuka the threshing drum (31) having a扱歯(31a) into the threshing chamber (33), a double-dip process cylinder on one side of the該扱chamber (33) A dust treatment cylinder for providing a second processing chamber ( 41 ) with ( 39 ) as a shaft and taking over the workpiece from the terminal end of the handling chamber ( 33 ) behind the second processing chamber ( 41 ). (35) a dust-exhaust treatment chamber Jikuka (37) provided at the rear of the threshing drum (31), sticks down cylinder with a dropped tooth (51b) sticks substantially the same diameter as該扱cylinder (31) ( 51 ) is provided, and the posture of the part passing through the lowering drum ( 51 ) portion of the feed chain (15) that conveys the cereals backward is substantially parallel to the axis ( 51a ) of the lowering drum ( 51 ). And a lattice-shaped second hole (55) provided below the dropping cylinder (51) below the end of the handling chamber (33). In addition to larger than the first hole (54) of the grating pattern provided, said second hole (55) is, sticks drop cylinder (51) gradually increases ing configuration from the upstream side in the rotational direction toward the downstream side of This is a threshing device characterized by that.

In the invention of claim 2, the dusting drum ( 51 ) is communicated with the dust removal treatment chamber (37), and the dust treatment drum (35) is treated from the dusting drum (51). things a is obtained by a threshing apparatus according to claim 1 Symbol mounting, characterized in that a feed sent to the rear spiral (35a).

According to the present invention 請 Motomeko 1, wherein the orientation of the portion passing through the drop cylinder (51) portion sticks of the feed chain (15), since substantially parallel to the axis (51a) of the sticks drop cylinder (51) , sticks against straw discharge to be conveyed by the feed chain (15) drop teeth (51b) efficiently acts, Ru can you efficiently recover sticks grains are present in the straw discharge.

Then, the lattice-shaped second hole (55) provided below the dropping cylinder (51) is formed larger than the lattice-shaped first hole (54) provided below the terminal end of the handling chamber (33). In addition, since the second hole (55) gradually increases from the upper side to the lower side in the rotational direction of the dropping drum (51), it becomes easier for the grains to fall and improve the recovery rate of the grains. Can be made.

According to the invention described in claim 2, in addition to achieving the effect of the invention described in claim 1, the grinding cylinder (51) communicates with the dust processing chamber (37) and the dust processing cylinder (35). Is provided with a feed spiral (35a) for feeding the object to be processed from the barrel (51) to the rear, so that the object to be processed can be quickly extracted into the dust disposal chamber (37).

1 and 2 show a combine that is an agricultural machine that embodies the present invention.
A cutting device 3 is provided in front of the chassis 2 having the traveling device 1. The reaping device 3 includes a plurality of weeding tools 4 for weeding the planted cereal, a plurality of pulling devices 5 for causing the planted cereal, a cutting blade 6 for harvesting the planted cereal, and the cutting blade A conveying device 7 is provided which sandwiches the grain culm cut at 6 and conveys it to the rear. The conveying device 7 includes a stock transport device 8 behind the cutting blade 6 and a supply transport device 10 that takes over the cereal straw transported from the stock transport device 8 and supplies it to the threshing device 9.

  The reaping device 3 is supported by a reaping device support frame 12 that moves up and down about a rotating shaft 11a provided above a suspension base 11 standing on the front portion of the chassis 2 at its substantially left and right intermediate portions. . The reaping device 3 is configured to move up and down together with the reaping device support frame 12 by tilting a steering lever 14 provided in the operation unit 13 in the front-rear direction.

  Above the chassis 2, the threshing device 9 having a feed chain 15 that takes over and transports the cereals conveyed from the supply conveying device 10, and the right side of the threshing device 9, A grain tank 16 that temporarily stores the grain that has been threshed and an operation unit 13 that is positioned in front of the grain tank 16 and that performs various operations of the combine are mounted. A traveling transmission device 17 that drives the traveling device 1 is provided at the front of the chassis 2.

  Behind the threshing device 9 is a waste chain 18 that takes over and transports the waste that has been transported from the feed chain 15, and a cutter device 19 that cuts the waste after the end of the waste chain 18. Is provided. Moreover, you may mount | wear with other working machines, such as a knotter which binds a waste, behind the cutter apparatus 19 of this Example.

  When the grain amount in the Glen tank 16 is full, the grain is discharged from the milled cylinder 20 and the grain discharge auger 21 to the outside of the machine. The whipping cylinder 20 is configured to be turnable by an electric motor (not shown), and the grain discharge auger 21 is configured to be moved up and down by a hydraulic cylinder 22. And the grain discharge auger 21 is connected with the upper part of the whipping cylinder 20, and is comprised integrally, and when the whipping cylinder 20 turns, the grain discharge auger 21 also turns together.

  Further, the combine determines the position of the sub-shift in the travel transmission device 17 by operating the sub-transmission lever 23 provided in the operation unit 13, and then operates the travel shift lever 24 to drive power from the engine (not shown). Is transmitted to the left and right crawlers 26, 26 of the traveling device 1 via the hydraulic continuously variable transmission and the traveling transmission device 17, and travels at an arbitrary speed. As described above, the speed is changed by the operation amount of the traveling speed change lever 24, and the combine is moved forward and backward by the forward and backward operations of the traveling speed change lever 24.

  The combine is configured to turn left and right by tilting the steering lever 14 provided in the operation unit 13 in the left-right direction, and further, the turning radius depends on the amount of tilting operation of the steering lever 14 in the left-right direction. It is a configuration to be determined.

  When the harvesting operation is performed by advancing such a combine, the cereals planted in the field scene are weeded by the weeding tool 4, and then caused by the pulling device 5 and by the cutting blade 6. It is a structure that is reaped. Thereafter, the harvested corn straw is transported rearward by the stock transporter 8 and is handed over to the supply transporter 10. The cereal that has been handed over to the supply and transport device 10 is further transported rearward and is handed over to the feed chain 15 of the threshing device 9. The threshing is selected.

  The grain thus threshed and sorted is transported from the first lifting cylinder 27 into the Glen tank 16 and temporarily stored, and when the amount of grain stored in the Glen tank 16 is full, the operation unit In this configuration, 13 notification means (buzzer or display device) notify the operator. Thereafter, the cutting operation is interrupted, and the operation for discharging the grains in the Glen tank 16 to the outside of the machine is started. The combine is moved to an arbitrary position (position near the truck), the grain discharge auger 21 is detached from the auger receiver 28, and the grain discharge port 21a is moved to a position such as a truck bed. Then, the grain discharge lever 29 provided in the operation unit 13 is turned on, the grain in the Glen tank 16 is discharged to the outside of the machine, and when the grain discharge in the Glen tank 16 is finished, the grain discharge auger Reference numeral 21 denotes a configuration in which the auger receiver 28 is housed again.

The said threshing apparatus 9 is demonstrated based on FIGS.
3 is a side view of the threshing device 9, FIG. 4 is a plan view of the threshing device 9, and FIG. 5 is a cross-sectional view taken along line AA shown in FIG.

  In the threshing device 9, a handling chamber 33 in which a handling cylinder 31 having a handling net 30 is mounted on a handling cylinder shaft 32, and a processed material from the rear of the handling chamber 33 is received on one side of the handling chamber 33. A dust removal treatment chamber 37 is provided in which a dust removal treatment cylinder 35 having a dust treatment network 34 to be processed is mounted on a dust removal treatment cylinder shaft 36. A swing sorting shelf 38 is provided below the handling chamber 33 and the dust removal processing chamber 37.

  A second processing chamber 41 including a second processing drum 39 and a second processing drum receiving rod 40 (which may be a net or a lattice) may be formed in front of the dust removal processing drum 35. In the present embodiment, the second processing cylinder 39 is one side (the Glen tank 16 side) of the handling cylinder 31 and is integrally formed with the dust processing cylinder 35 in front of the dust processing cylinder 35. The second processing cylinder 39 basically processes a second product. Since the second processing cylinder 39 is supported by the second processing cylinder shaft 42, the dust processing cylinder 35 and the second processing cylinder 39 are integrated with the dust processing cylinder shaft 36 and the second processing cylinder 39. The structure is supported by the processing cylinder shaft 42.

  Furthermore, as shown in the cross-sectional view of FIG. 5, the object to be processed that has leaked from the handling net 30 is configured to be taken into the second processing chamber 41, so that the second processing cylinder 39 includes the second object, An object to be processed that has entered from the inside of the handling chamber 33 is also processed together. The handling net 30, the second treatment cylinder receiving rod 40 (which may be a net or a lattice), and the dust treatment net 34 are provided below the treatment cylinder 31, the second treatment cylinder 39, and the dust treatment cylinder 35, respectively. Yes.

Below the handling chamber 33, the second processing chamber 41, and the dust removal processing chamber 37, an oscillating sorting shelf 38 that receives and sorts the falling objects to be sorted is installed. Is provided with a tang 43 on the start side of the sorting air feed direction, and an air passage 44 and an air passage 45 are provided on the lower side of the sorting air sent from the tang 43 in the feeding direction. The first spiral 46 is provided on the lower side of 44 and the air passage 45, and the second spiral 47 is provided on the lower side of the first spiral 46 in the sorting wind feed direction. A second whipping cylinder 48 for whipping the second thing collected by the second helix 47 to the second treatment chamber 41 is provided.

The configuration of the swing sorting shelf 38 will be described. The swing sorting shelf 38 is a transfer shelf 49 for transporting fallen cereals backward, a grain sheave 38a (crimp net in this embodiment) for sorting cereals, and a second thing in order from the start side in the sorting feed direction. sorting to chaff sieve 38b, and a straw rack 38c and to release by transferring the clean room was out of the apparatus along with the recovery of sticks grains loosened Haichiributsu. Below the Strollac 38c is constituted by a second shelf tip 47a for guiding the second item into the second spiral 47, and the dust exhausting cylinder 35 extends to the vicinity of the terminal end of the second shelf tip 47a. It is the composition which has taken out. The suction fan 50 a is for discharging light dust in the sorting chamber 50 to the outside of the machine, and is configured to be provided on the opposite side of the dust removal processing cylinder 35 with respect to the handling cylinder 31. The grain sheave 38 a is positioned substantially above the first spiral 46, and the chaff sheave 38 b is positioned approximately above the second spiral 47.

The cereals conveyed from the reaping device 3 are taken over by the start end of the feed chain 15 of the threshing device 9, and the cereals inherited by the feed chain 15 are transported rearward while It is threshed by the handling net 30. A portion of the threshed threshing falls on the swing sorting shelf 38 and is sorted by the swinging action of the swing sorting shelf 38 and the wind sorting action from the Kara 43 and taken into the first spiral 46. As a result, the grain taken into the first spiral 46 is temporarily stored in the Glen tank 16. After the threshing, the waste is handed over from the terminal end of the feed chain 15 to the start end of the waste chain 18 and then sent to the cutter 19 where it is cut and released onto the lower field. It has become.

  The remaining threshing in the handling chamber 31 is conveyed rearward, and a part of the threshing is taken into the second processing chamber 41 along the way. The threshing taken into the second processing chamber 41 is threshed by the interaction between the second processing cylinder 39 and the second processing cylinder receiving rod 40 (particularly, branch branch) The particles are processed) and fall onto the lower swing sorting shelf 38. The handling cylinder 31, the second processing cylinder 39, and the dust removal processing cylinder 35 are configured to rotate clockwise in a situation (a front view of the threshing device 9) when the lower side is viewed from the upper side in the sorting wind feed direction. Accordingly, the direction of the processing teeth 39a of the second processing cylinder 39 is fixed in such a direction as to send the cereals in the upper direction of the sorting wind feed direction.

  That is, the processing teeth 39a have an action of conveying the workpiece to the upper side in the sorting air feed direction, and further have an action of processing the workpiece. That is, the processing tooth 39a is a part of a spiral, and is configured to process the object to be processed by the interaction between the circumferential tip portion thereof and the second processing cylinder receiving rod 40. The blades 39b provided at the conveying terminal end of the second processing cylinder 39 forcibly send the workpiece to the swing sorting shelf 38.

The dust removal processing teeth 35a at the start end of the dust removal processing cylinder 35 need to be fixed in such a direction as to send the cereals from the rear part of the handling chamber 33 in the lower direction of the sorting wind feed direction. In the present embodiment, the dust removal treatment teeth 35 a have a spiral shape that is wound around the outer peripheral surface of the dust removal treatment cylinder 35.

In this embodiment, since the mesh of the dust disposal network 34 is rough (lattice), some short sawdust falls on the swing sorting shelf 38, and long sawdust that has not fallen falls into the dust disposal chamber. 37 is transported to the end portion 37 and forcibly discharged onto the stroller 38c by the blade 35b at the end portion of the dust removal processing cylinder 35. While the object to be processed is thus transported in the dust processing chamber 37, the dust processing cylinder 35, the processing teeth 35 c provided with the dust processing cylinder 35 and the dust processing net 34 are provided. Through the interaction, the threshing is further loosened, the threshing is loosened and the grains (so-called scorpion grains) mixed in are taken out and fall on the lower swing sorting shelf 38, and the second spiral It is configured to be collected into 47.

  As described above, the remaining threshing that does not fall on the swing sorting shelf 38 and is not taken into the second processing chamber 41 due to the cerealing in the handling chamber 33 reaches the end of the handling chamber 33. Be transported. The threshing that has been transported to the end of the handling chamber 33 is taken into the dust removal processing chamber 37, and the taken-in threshing is transported to the lower side in the sorting wind feed direction.

Further, of the cereals that have been transported to the end of the handling chamber 33, the cereals that have not been taken into the dust disposal chamber 37 fall on a swinging sorting shelf 38 below.
In order to prevent clogging of the cereal when the cereal is sent from the end portion in the handling chamber 33 into the dust evacuation processing chamber 37, the dust evacuation treatment cylinder 35 is provided at the hand over portion from the handling chamber 33 to the dust evacuation treatment chamber 37. Since the dust-removing treatment teeth 35a having a spiral shape are provided on the outer periphery of the outer periphery, the cereals are not clogged in the takeover portion by the feeding action of the dust-removing treatment teeth 35a.

Despite the rocking action of the rocking sorting shelf 38 and the action of the sorting wind from the tang 43, the remaining grains that have not been taken into the spiral 46 are further removed together with other dusts. It is sent backward and taken into the second spiral 47. The second product taken into the second helix 47 is returned to the lower side in the sorting air feed direction of the second processing chamber 41 by the second lifting cylinder 48 and merged with the cereal from the handling chamber 33. Then, while being transported to the upper side of the sorting wind feed direction, it is transported while being threshed by the interaction with the second processing barrel receiving rod 40, and is placed on the lower swing sorting shelf 38 by the blade 39b at the end portion. It is the composition that falls forcibly.

On the other hand, the rear of the threshing drum 31 is constructed to provide a sticks drop barrel 51 of substantially the same diameter as the thresher 31. In off cylinder 51 sticks has a structure provided with sticks drop teeth 51b was similar shape as扱歯31a. Then, in the sticks down the barrel 51 portion configured to be set substantially parallel to the axis 51a of the drop cylinder 51 sticks a feed chain 15. Thus, it sticks down teeth 51b with respect to straw discharge carried by the feed chain 15 because they act efficiently, so improving the sticks particle recovery.

Further, the axis 51a of the sticks dropping cylinder 51, since the configuration thresher shaft 32 coaxially, the transmission system is simplified. Further, the vertical position of the feed chain 15 constructed by arranging so that substantially the same height as the axis 51a of the drop cylinder 51 sticks. Thus, since more sticks dropped tooth 51b comes into contact efficiently straw discharge, so recovery efficiency sticks grains is improved.

Next, FIG. 6 will be described.
In beginning the sticks down cylinder 51, and be provided with a partition plate 52 which partitions between the communicating port to the dust-exhaust processing chamber 37 from the terminal end of the threshing chamber 33. Moreover, the partition plate 52, for the previous parts from dropping teeth 51b sticks are tilted toward the treatment object conveyance direction downstream side. As a result, the object to be processed is efficiently conveyed backward, and clogging and the like can be prevented.

Next, FIG. 7 will be described.
As with the end portion of the handling cylinder 31, the portion of the dropping cylinder 51 is communicated with the dust disposal chamber 37, and a feed spiral 35a is provided at the rear of the dust disposal cylinder 35. Thus, the improved recovery efficiency sticks grains, now escapes to the article to be treated quickly dust-exhaust processing chamber 37 from the threshing chamber 33, the load reduction of the threshing chamber 33.

Also, as a configuration in which a guide 53 and a lower portion B of the end of the sticks down cylinder 51 in an open state. As a result, the resistance to the waste held by the feed chain 15 is reduced, so that the waste is transported smoothly.

Next, FIG. 8 will be described.
Comparing the threshing chamber 33 end portion below the grid holes (second hole lattice shape) 54 with sticks down cylinder 51 below the grid holes (first hole lattice shape) 55, it sticks down cylinder 51 below the grating holes 55 Is configured to have a larger shape. Moreover, it configured to gradually increase the size of the grid holes 55 toward the downstream side from the rotating direction upstream side of the drop cylinder 51 sticks. Thus, it sticks grains so recovery of the oscillating sorting shelf 38 easily fell on sticks grains is improved.

Next, FIG. 9 will be described.
Reference numerals 56 and 56a denote dust feeding plates attached to the lower side of the barrel cover 57 shown in FIG. Each of the dust feeding plates 56 and 56 a is connected by connecting rods 58 and 59. And if the knob 60 is moved along the long hole 60a, the angle adjustment of the dust sending plates 56 and 56a is possible. The dust sending plate 56 a located at the terminal end of the handling chamber 33 is configured to have an angle in the feeding direction with respect to the front dust sending plate 56 in advance. Thereby, a to-be-processed object comes to be sent smoothly.

Next, FIG. 10 will be described.
The swing sorting shelf 38 located below the terminal end of the handling chamber 33 is configured to be provided with a plurality of bar members 61 in the lateral direction. Further, the swing sorting shelf 38 located below the drop cylinder 51 sticks has a configuration providing a plurality of fins 62 in the lateral direction. Further, the fins 62 are configured to extend to substantially the rear end of the chaff sheave 38b. Thus, come to be loosened for the treatment of massive that has fallen from the end portion and the sticks down cylinder 51 of the threshing chamber 33, so that the recovery efficiency of the sticks grains is improved.

Next, FIGS. 11 and 12 will be described.
11 is a CC cross section shown in FIG. 8, and FIG. 12 is a DD cross section shown in FIG. That is, in the D-D cross-section, are composed of off cylinder 51 sticks to a guide plate 63 so as to narrow the communicating portion to the dust-exhaust processing chamber 37. Thus, it sticks grains rate to fall onto the swing sorting shelf 38 of lower increases, so the recovery efficiency of the sticks grains is improved.

Next, FIG. 13 will be described.
Reference numeral 64 denotes a receiving net partition plate 64, and this receiving net partition plate 64 is configured to be constantly pressed toward the handling chamber 33 by a compression spring 65. Therefore, when the amount of processing in the chamber 33 is increased, a load is applied to the receiving mesh partition plate 64, and as a result, the receiving mesh partition plate 64 moves to the feed chain 15 side. Thereby, since it is comprised so that the receiving net partition plate 64 may escape according to load, it becomes possible to prevent the overload in the handling chamber 33 now. Moreover, as shown in FIG. 14, you may comprise so that the receiving net partition plate 64 may be pressed with the compression spring 65 from the downward direction. As a result, when a large amount of cereal is introduced into the handling chamber 33, the entire cereal is lifted upward, and therefore the tip portion is also raised, so that the tip portion further abuts against the handling cylinder 31. As a result, it is possible to prevent unhandling.

Next, FIG. 15 will be described.
FIG. 15 is an enlarged view of the handling chamber 33 as viewed from the rear. Reference numeral 66 denotes a stock guide body. The teeth 31a of the handle 31 are configured to overlap the stock guide body 66. Thus, so扱残Mr prevent the sticks particle recovery rate is improved. Further, the stock guide body 66 is provided with pins 67. This pin 67 is arranged outside the rotation locus E of the tooth handling teeth 33a and along the rotation locus E. Thereby, since it becomes possible to prevent the drop of the stock side of the cereal, the cereal is threshed at an appropriate position.

Next, FIG. 16 will be described.
Although the dropping drum 51 is coaxial with the handling drum 31, it is completely independent from the handling chamber 33 and is provided in the vicinity of the start end of the waste transporting device 18. Reference numeral 18a is a stock transporting and rejecting chain, and 18b is a tip transporting lug. Further, in the configuration in which the drop cylinder 51 sticks thus constitutes a feed chain 15 so as to speed tuning. Since the feed chain 15 is to remain much grain sticks into the vehicle speed tuning and straw discharge, by providing the sticks down cylinder 51 as described above, it sticks particle recovery will be able to efficiently. It may also be configured to provide a dedicated sticks drop Doshitsu 68 providing a down cylinder 51 sticks. Thus, it sticks to take over transport of the straw discharge from dropping cylinder 51 to the straw discharge conveying device 18 is improved. The rotational direction of the sticks down cylinder 51, because it is rotating in the same lower threshing direction as the threshing drum 31, a structure in which the anti-feed chain 15 side is provided a guide plate 69 for preventing rotational basis. This makes it possible to prevent degradation of the performance of the drop cylinder 51 sticks. Further, the guide plate 69 for preventing the rotation is provided so as to be positioned on the swing sorting shelf 38, so that an object to be processed (such as a small grain) contacting the guide plate 69 is placed on the swing sorting shelf 38. It will fall. Therefore, it is possible to efficiently collect the small grains.

The threshing drum 31 and the sticks down cylinder 51 so as to drive the front of the transmission portion 70 of the threshing apparatus 9. Further, straw discharge conveying device 18 so as to drive through the transmission case 72 from dropping cylinder 51 sticks. On the other hand, the second processing drum 39 and the dust removal processing drum 35 are configured to be driven from the transmission portion 71 in front of the threshing device 9. In this way, two barrels are formed on two axes parallel to each other, so that the threshing apparatus is compact and highly efficient. Moreover, since the two shafts are driven from the front of the threshing device 9, a simple transmission configuration can be achieved.

The two shafts are configured to rotate in opposite directions. In other words, drop cylinder 51 sticks and thresher 31 is rotated clockwise when viewed from direction F in FIG. 16 (rowing down). On the other hand, the second treatment cylinder 39 and the dust removal treatment cylinder 35 are also rotated counterclockwise when viewed from the F direction. Thereby, even if the vibration by the unbalance of a trunk | drum arises, it can cancel each other and it becomes possible to reduce a vibration.

Also, the straw discharge conveying device 18, by configuring so as to disposed in a space surrounded by the down cylinder 51 and the dust-exhaust processor body 35 sticks, further comprising a compact configurable.
Next, FIG. 17 will be described.

In rotating the barrel 51, the fingers 73 are rotated from the barrel shaft 32, and the fingers 73 are eccentric with respect to the barrel shaft 32. The tip portion of the fingers 73 are configured to protrude from a hole 74 provided in the down cylinder 51 sticks. Therefore, drop cylinder 51 finger 73 sticks be rotated is to rotate the thresher shaft 32 rotates. On the other hand, since the finger 73 is eccentric with respect to the handling cylinder shaft 32, the finger 73 protrudes from the hole 74 on the feed chain 15 side, and the protruding state from the hole 74 is reduced on the anti-feed chain 15 side. Therefore, take turns by finger 73 is reduced, it sticks sticks grains recovered by the action of dropping cylinder 51 comes to fall on the swing sorting shelf 38. Thereby, the recovery efficiency of a small grain comes to improve.

Combine left side view Combine front view Side cross section of threshing device Top view of threshing device Cross section of part of threshing device Cross section of part of threshing device Side cross section of threshing device Top view of threshing device Top view of threshing device Side cross section of threshing device Cross section of part of threshing device Cross section of part of threshing device Cross section of part of threshing device Cross section of part of threshing device Cross section of part of threshing device Top view of threshing device Top view of part of threshing device

15 Feed chain 31 Handling cylinder
31a Teeth handle 33 Handle chamber 35 Dust removal cylinder
35a feed spiral 37 dust removal treatment chamber 39 second treatment drum 41 second treatment chamber 51 grinding drum 51a shaft core
51b brushed teeth
54 lattice holes (lattice-shaped first hole)
55 lattice holes (lattice-shaped second hole)

Claims (2)

And Jikuka the threshing drum (31) having a扱歯(31a) to the threshing chamber (33) within double-dip processing Jikuka the double-dip process drum (39) on one side of the該扱chamber (33) chamber (41) is provided, dust-exhaust processing Jikuka the dust-exhaust processing cylinder (35) for processing taken over the object to be processed from the rear to the threshing chamber (33) end of the double-dip process chamber (41) chamber (37) is provided, wherein the rear of the threshing drum (31), sticks provided drop cylinder (51) with sticks minced teeth (51b) substantially the same diameter as該扱cylinder (31), rearwardly culms the posture of a portion passing through the drop cylinder (51) portion sticks of the feed chain (15) for conveying to, the sticks and substantially parallel to the axis of drop cylinder (51) (51a), said sticks drop cylinder (51) The grid-shaped second hole (55) provided below is referred to as the grid-shaped first hole (54) provided below the terminal end of the handling chamber (33). Ri also while larger, second hole (55) is, it sticks threshing device being characterized in that a gradually increased ing configuration from the upstream side in the rotational direction toward the downstream side of the drop cylinder (51). The crushing cylinder ( 51 ) communicates with the dust removal treatment chamber (37), and the dust removal treatment cylinder (35) also feeds the object to be treated from the crushing cylinder (51) to the rear ( claim 1 Symbol placement threshing apparatus, characterized in that a 35a).

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