JP2007061003A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing apparatus improving separation performances of whole grains recovered first of all. <P>SOLUTION: The threshing apparatus is obtained by axially installing a threshing cylinder in a threshing chamber and designed to receive materials, which are to be treated and leaked down from a threshing net on the lower side of the threshing chamber, with a shaking and separation shelf, shake and separate the materials while shaking and transferring the materials. The threshing apparatus is composed by providing grain sieves at the rear of the transfer shelf composed on the side of the starting end of the shaking separation shelf, arranging chaff sieves at the rear of the grain sieves, composing the chaff sieves so that the pitch of each sieve plate of the chaff sieves is made longer than the pitch of each sieve plate of the grain sieves and arranging the starting ends of the grain sieves at the front of the terminal end of the threshing net by a prescribed distance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

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

In a threshing device that is constructed by pivoting a handling cylinder in a handling chamber, and swinging and sorting while receiving the workpiece to be leaked from the handling net below the handling chamber on a swing sorting shelf, In the sheave disposed behind the transfer shelf configured on the starting end side of the swing sorting shelf, the pitch interval of each sheave plate is the same before and after the sheave. (For example, refer to Patent Document 1).
JP 2000-201524 A

  The technique as described above has a drawback that coarse cuttings and the like existing on the front sheave easily filter downward and the first sorting performance is deteriorated. In other words, since the specific gravity selection on the front side of the sheave is not promoted, if the filtration area on the rear side of the sheave is enlarged, the selection becomes worse. Therefore, the filtration area on the rear side of the sheave cannot be increased, and thus the amount of processed material is large. Then, there was a problem that clogging easily occurred.

  The subject of this invention is providing the threshing apparatus which eliminated the above malfunctions and improved the selection performance of the sized particle | grains collect | recovered first.

The above object of the present invention is achieved by the following configuration.
That is, according to the first aspect of the present invention, the handling cylinder 31 is provided in the handling chamber 33 so as to be pivoted, and the workpiece to be leaked from the handling net 30 below the handling chamber 33 is moved by the swing sorting shelf 38. In the threshing device that receives and swings and moves while swinging, a grain sheave 38a is provided at the rear of the transfer shelf 49 configured on the starting end side of the swing sorting shelf 38, and a chaff sheave 38b is provided at the rear of the grain sheave 38a. And the pitch D of each sheave plate Q of the chaff sheave 38b is made longer than the pitch C of each sheave plate P of the grain sheave 38a. Is a threshing device characterized by being arranged in front of a predetermined distance B.

  According to the operation of the first aspect, the object to be processed threshed by the handling drum 31 in the handling chamber 33 falls on the swing sorting shelf 38 below the handling net 30. The coarse sieve 38a on the rear side of the transfer shelf 49 configured on the starting end side of the swing sorting shelf 38 does not filter coarse fraying and the like, and much of the sizing and small dust are filtered. Then, from the chaff sheave 38b behind the Glen sheave 38a, even if coarse cuttings or the like are to be filtered, they are not filtered by the sorting air from below.

  The invention according to claim 2 is characterized in that the length L1 of the sheave plate P of the grain sheave 38a is equal to or longer than the length L2 of the sheave plate Q of the chaff sheave 38b. Item 13. A threshing apparatus according to item 1.

The action of claim 2 promotes the specific gravity selection by Glen sieve 38a in addition to the action of claim 1.
According to the third aspect of the present invention, when the Glen sheave 38a and the chaff sheave 38b are fully closed, the workpiece is not dropped from the grain sheave 38a, and the workpiece is dropped from the chaff sheave 38b by a predetermined amount. The threshing apparatus according to claim 1 or 2, wherein the threshing apparatus is configured as described above.

  According to the third aspect of the invention, in addition to the action of the first or second aspect, when the grain sheave 38a and the chaff sheave 38b are fully closed, the object to be processed does not fall from the grain sheave 38a but falls from the chaff sheave 38b.

  Since the present invention is configured as described above, in the invention according to claim 1, since the coarse sieve 38a does not filter coarse swarf or the like, only the sizing and dust are filtered. To improve. Also, in the rear chaff sheave 38b, coarse cuttings and the like are not filtered by the sorting air from below and are discharged from the third to the outside of the machine, so that the second sorting is also good, and threshing The load on the entire apparatus is also reduced.

  In the second aspect of the invention, in addition to the effect of the first aspect, the specific gravity sorting in the Glen sieve 38a is improved, so that the best sizing ratio can be improved and further improvement in the sorting performance can be expected. become.

  In the invention according to claim 3, in addition to the effect of claim 1 or claim 2, when the amount of the object to be processed is small, the objects to be processed are collected and selected in the chaff sheave 38b. A predetermined amount of workpiece can be secured. Therefore, the third scattering can be prevented and the loss can be reduced.

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 cutting 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 and 26 of the traveling device 1 via the hydraulic continuously variable transmission and the traveling transmission device 17 to travel 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 cereals are transported rearward by the stock transporter 8 and are 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, and the cereal is transported rearward by the feed chain 15 to the threshing device 9. And threshing and sorting.

  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.
FIG. 3 is a side view of the threshing device 9, and FIG. 4 is a plan view of the threshing device 9.
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. 33a is a discharge port provided at the end of the handling chamber 33.

  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.

  Further, FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. 4. Since the workpiece leaked from the handling net 30 is taken into the second processing chamber 41, the second processing cylinder 39 is In addition to the second object, the object to be processed that has entered from the inside of the handling chamber 33 is also processed. 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 lifting cylinder 48 is provided for lifting the second thing collected in the second helix 47 to the second processing chamber 41.

  The configuration of the swing sorting shelf 38 will be described. The swing sorting shelf 38 includes, in order from the start side in the sorting and feeding direction, a transfer shelf 49 for transferring the fallen cereals backward, a grain sheave 38a for sorting the cereals, a chaff sheave 38b for sorting the second thing, and dust. It is composed of a Strollac 38c that loosens and collects the scorpion grains and transports and discharges dust. 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 removal processing 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 51 is for discharging light dust in the sorting chamber 50 to the outside of the machine, and is provided at a position facing the dust removal processing cylinder 35 with respect to the handling cylinder 31. Reference numeral 52 denotes a crankshaft that drives the swing sorting shelf 38 to swing.

  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 part 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 is taken into the spiral 46 first. Accordingly, the grain taken into the first spiral 46 is configured to be 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. Therefore, it is necessary to fix the direction of the processing teeth 39a of the second processing cylinder 39 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 of the dust removal processing cylinder 35 need to be fixed in such a direction as to send the cereal 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.

  However, in this embodiment, since the dust disposal mesh 34 is rough (lattice), some short sawdust falls on the swing sorting shelf 38, and long sawdust that has not fallen is dust. It is transported to the end portion of the processing chamber 37 and is forcibly discharged onto the strola rack 38 c by the blade 35 b 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 It is configured to be collected into the spiral 47.

  As described above, the remaining cereal that has not fallen on the swing sorting shelf 38 due to cerealing in the processing chamber 33 and that has not been taken into the second processing chamber 41 is conveyed to the end of the processing chamber 33. It will be done. 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. Of the threshing that has been transported to the end of the handling chamber 33, the threshing that has not been taken into the dust disposal chamber 37 falls on the swinging sorting shelf 38 below.

  When the cereal is sent from the end portion in the handling chamber 33 into the dust removal processing chamber 37, the dust removal treatment cylinder is also provided at the takeover portion from the handling chamber 33 to the dust removal treatment chamber 37 so that the cereal removal is not clogged. Spiral-shaped dust removal processing teeth 35a are provided on the outer periphery of 35, and the take-off portion is prevented from being clogged by the feeding action of the dust removal processing teeth 35a.

  In spite of the swinging action of the swinging sorting shelf 38 and the action of the sorting wind from the red pepper 43, the remaining grains that are not taken into the spiral 46 are further collected together with other dusts. It is sent to the rear and taken into the second spiral 47. The second product taken into the second spiral 47 is reduced 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.

  Since the starting end portion of the granular 38 a shown in FIG. 6 is located in front of the end portion of the handling net 30 by a predetermined distance B, the sorting performance of the workpieces dropped from the handling net 30 is improved. Become.

  Further, when the length L1 of the granule 38a and the length L2 of the chaff sheave 38b are compared, L1 ≧ L2. Then, when the pitch C of each sheave plate P of the granule 38a and the sheave plate Q pitch D of the chaff sheave 38b are compared, C <D. When the distance L3 between the rotating upper and lower pins of the granule 38a is compared with the distance L4 between the rotating upper and lower pins of the chaff sheave 38b, L3 <L4.

  As a result, coarse cuts and the like can be prevented from being filtered at the part of the grain 38a, and the specific gravity selection on the grain 38a can be promoted. As described above, since the preliminary sorting is promoted, it is possible to prevent the sorting from deteriorating even if the filtration area of the rear chaff sheave 38b is enlarged.

  Further, when the distance L3 between the rotating upper and lower pins of the granule 38a is compared with the distance L4 between the rotating upper and lower pins of the chaff sheave 38b, the strength of the side plate is reduced by configuring L3 <L4. Can be prevented. Further, when the glenve 38a and the chaff sheave 38b are opened, the difference between the opening of the glenve 38a> the opening of the chaff sheave 38b gradually increases. As a result, the initial filtration amount can be increased according to the increase in the amount of the object to be processed on the swing sorting shelf 38, and a high flow rate can be dealt with.

  FIG. 7 shows a state in which the granule 38a and the chaff shib 38b are fully closed. At this time, it is set as the structure which does not permit filtration from the grain sieve 38a, and it comprises so that filtration is possible from the chaff sieve 38b. As a result, the specific gravity sorting distance is increased by the glenive 38a and the chaff shib 38b is filtered during low-speed work with a small amount of workpieces on the swing sorting shelf 38 or under a condition where the percentage of dust such as wheat is high. As a result, it becomes possible to maintain good sorting.

  Further, when the granule 38a is rotated in the closing direction, the distance from the terminal end of the transfer shelf 49 to the first sheave plate of the granule 38a is larger than the pitch C of the granule 38a. Is configured to be long. The distance from the terminal end of the transfer shelf 49 to the first sheave plate of the granule 38a and the front-rear distance from the upper end to the lower end of the granule 38a are configured to be substantially the same or longer. Further, the terminal end of the transfer shelf 49 and the lower end of the granule 38a are configured to be substantially at the same position or overlap. As a result, when the sheave is in the closing direction, such as during wheat or low-speed work, coarse cuts and shavings are less likely to fall with the filtrate from the front portion of the grain sheave 38a, and deterioration of sorting can be prevented. It becomes like this. Further, even if the number of the granule 38a is reduced, the length (front-rear distance) of the granule 38a can be increased, thereby reducing cost and weight.

  The distance from the end of the grenade 38a to the top end of the chaffive 38b is longer than the pitch D of the chaffive 38b, and the chaff sheave 38b is arranged so that the glenve 38a and the chaff sheave 38b overlap each other in the front and rear. The length L2 is ensured. Thereby, filtration of coarse dust etc. can be prevented.

  As shown in FIGS. 8 and 9, the upper end portion of the granule 38 a is formed in a flat shape, and the upper end portion of the chaff sheave 38 b is formed in an uneven shape. Thereby, it is possible to prevent the sawdust from being caught in the portion of the granular 38 a and to prevent resistance to the flow of the workpiece. And since a to-be-processed object does not stagnate, it comes to be able to prevent that a long broken piece falls. Further, since the chaff sheave 38b promotes filtration, the loss is reduced.

FIG. 10 shows a transmission configuration to the suction fan 51 and the cutter device 19.
A pulley 53 is provided on the tang drive shaft 53 a, and a belt 57 is wound around the pulley 53. The belt 57 is wound around a pulley 54 fixed to the first helical shaft 46a, a pulley 55 fixed to the second helical shaft 47a, and a counter pulley 56. The suction fan 51 is driven from the counter pulley 56 via a belt 59, and the cutter device 19 is further driven from the counter pulley 56 via a belt 58. As described above, since the suction fan 51 and the cutter device 19 are configured such that the transmission is branched from the counter pulley 56 and driven by separate pulleys, the suction fan 51 even if the cutter device 19 is clogged or slipped. Since the first spiral 46, the second spiral 47 and the like are driven at a normal rotational speed, the sorting can be prevented from being deteriorated and the loss can be reduced. Further, since the belt is less bent, the life of the belt is extended.

  Reference numeral 60 denotes a reverse drive unit for the suction fan 51. The reverse drive unit 60 is provided on the lower transmission side of the counter pulley 56 and in the vicinity of the suction fan 51. As described above, the rotation direction of the suction fan 51 can be changed by the reverse drive unit 60. Therefore, when clogging or the like occurs, the suction fan 51 can be temporarily reversed to eliminate it. The suction fan 51 may be of a cross flow fan (sirocco fan) type.

  As shown in FIG. 3 described above, the drive crankshaft 52 of the swing sorting shelf 38 is driven from the front side of the threshing device. On the other hand, the Kara 43, the first spiral 46, the second spiral 47, the suction fan 51, the cutter device 19 and the like are driven from the rear of the threshing device. That is, the drive crankshaft 52 is driven independently. As a result, the loads of the tang 43, the first spiral 46, the second spiral 47, the suction fan 51, the cutter device 19 and the like are reduced, and the lifetime of each and the drive system are extended. Further, even if slip occurs in the transmission system such as the first spiral 46 and the second spiral 47, the swing sorting shelf 38 can be driven at a normal rotational speed, so that it becomes possible to prevent the occurrence of sorting failure. .

  As shown in FIG. 12, the feed chain 15 is driven from the pulley 61 because it is provided on the drive shaft 43 a of the carp 43. On the other hand, the suction fan 51, the first spiral 46, the second spiral 47, the cutter device 19 and the like are configured to be driven from another pulley 53 provided on the drive shaft 43a of the Kara 43. Thereby, even if the feed chain 15 is rotated to the side, the suction fan 51, the first spiral 46, the second spiral 47, the cutter device 19 and the like can be driven independently, so that cleaning and maintenance are easy. It becomes possible.

  Although 51 shown in FIG. 11 is a suction fan, in this case, an embodiment in the case of a cross flow fan is shown. The casing 62 that covers the cross flow fan 51 is configured to be longer by a predetermined distance F than the left end E of the threshing device 9. As a result, the suction capacity of the cross flow fan 51 is improved, and the sorting is improved. In particular, the suction ability such as long flaws is improved. Further, when the amount of workpieces in the threshing device 9 is small, the belt 59 is configured as a belt-type continuously variable transmission 63, and the belt-type continuously variable transmission 63 is shifted so that the rotational speed of the cross flow fan 51 is increased. By decelerating, the third loss can be reduced.

  The length of the cutter device 19 in the lateral width direction is also configured to be longer than the left end E of the threshing device 9 by a predetermined distance F. That is, the left end portion of the cutter device 19 is configured to be in the same position as the left end portion of the casing 62 of the cross flow fan 51. Thereby, the adaptability of the long punch in the cutter device 19 comes to be improved, and it becomes possible to prevent the stockholder side from being cut long. In addition, the dropper work that does not use the cutter device 19 can also firmly hold the stock, so that the waste work can be stably performed, and the posture of the waste that has fallen on the field is also stable. Become.

  The feed chain 15 described above is configured such that the standard side transmission system H and the high speed side transmission system I can be selected and driven. The standard side transmission system H and the high speed side transmission system I can be selected by the tension clutch 64. Further, the traveling device 1 is driven via the traveling transmission device 17 with the power changed from the engine 65 by the hydraulic continuously variable transmission 66. From the traveling transmission device 17, the standard transmission system H and the high speed side are driven. Since the feed chain 15 is driven via the transmission system I, the drive of the feed chain 15 is synchronized according to the vehicle speed of the combine. FIG. 13 shows the selected state of the auxiliary transmission and the standard side transmission system H or the high speed side transmission system I of the feed chain 15. As described above, since the drive speed of the feed chain 15 can be selected from the standard side transmission system H and the high speed side transmission system I, the ratio of the feed chain sync speed to the combine vehicle speed is greatly changed. It will be possible. As a result, conventionally, the lodging work is performed under adverse conditions, so the posture of thrown into the threshing is not stable, so that the swarf is corrected in the handling room and abnormal noise is generated in the handling room. However, such a drawback can be prevented.

  When the sub-shift is in a high speed state (standard operation) as shown in FIG. 13, the drive of the Ford chain 15 can be selected from either the standard side transmission system H or the high speed side transmission system I. In addition, when the sub-shift is in a low speed state (inclination work), the drive of the feed chain 15 is configured so that only the high speed side transmission system I can be selected. Thereby, the lodging work is improved and the troublesome selection is eliminated.

  Reference numeral 65 denotes an accessory tang, and the accessory tang 65 is provided in front of the tang. As shown in FIG. 12, the feed chain 15 is driven through the auxiliary tang 65, so that the rotational speed of the auxiliary tang 65 is also synchronized with the vehicle speed of the combine. It starts to rotate. Thereby, generation | occurrence | production of the sawdust in the handling chamber at the time of a fall can be reduced. Further, it becomes possible to prevent poor sorting (mixing of green leaves) with a wet material or the like.

  FIG. 14 shows the relationship between the standard transmission system H of the feed chain 15 and the sync speed of the high-speed transmission system I with respect to the vehicle speed of the combine. When the high speed side transmission system I is selected, when the vehicle speed exceeds a predetermined speed, the constant speed transmission from the carp 43 is switched. That is, the feed chain 15 is driven at a constant speed with the tension 61a in the engaged state. Further, the drive rotational speed at this constant speed is configured to be faster than the maximum speed of the standard side transmission system H. As a result, it is possible to prevent the drive rotational speed of the feed chain 15 and the auxiliary tang 65 from becoming too fast. Therefore, it is possible to prevent problems such as unhandled items and occurrence of cuttings.

Combine left side view Combine front view Side cross section of threshing device Top view of threshing device Cross section of threshing device front Partial cross-sectional view of a swing sorting shelf Partial cross-sectional view of a swing sorting shelf Cross section of threshing device front Cross section of threshing device front Side view of threshing device Cross section of threshing device front Transmission mechanism diagram Relationship diagram between sub-shift and feed chain speed Relationship between vehicle speed and feed chain speed

Explanation of symbols

9 Threshing device 30 Handling net 31 Handling cylinder 33 Handling chamber 38 Swing sorting shelf 38a Glen sheave 38b Chaff sheave 49 Transfer shelf B Predetermined distance P Glen sheave sheave plate C Glen sheave sheave plate pitch Q Chaff sheave sheave plate D Chaff sheave sheave plate Pitch L1 Glen sheave sheave plate length L2 Chaff sheave sheave plate length

Claims (3)

  A handling cylinder (31) is pivotally provided in the handling chamber (33), and an object to be processed that leaks from the handling net (30) below the handling chamber (33) is moved by a swing sorting shelf (38). In the threshing device that receives and swings and moves while swinging, a grain sieve (38a) is provided behind the transfer shelf (49) configured on the start end side of the swing sorting shelf (38), and the grain sieve (38a ) Is provided with a chaff sheave (38b), and the pitch (D) of each sheave plate (Q) of the chaff sheave (38b) is longer than the pitch (C) of each sheave plate (P) of the Glen sheave (38a). The threshing apparatus is characterized in that the start end portion of the grain sieve (38a) is arranged in front of the end portion of the handling net (30) by a predetermined distance (B).   The length (L1) of the sheave plate (P) of the Glen sheave (38a) is equal to or longer than the length (L2) of the sheave plate (Q) of the chaff sheave (38b). The threshing apparatus according to claim 1, wherein the threshing apparatus is a threshing apparatus.   When the Glen sheave (38a) and the chaff sheave (38b) are fully closed, the workpiece is configured not to fall from the grain sheave (38a), and the workpiece is dropped from the chaff sheave (38b) by a predetermined amount. The threshing apparatus according to claim 1, wherein the threshing apparatus is configured as described above.

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