JP5113099B2 - Combine - Google Patents

Description

  The present invention relates to a combine equipped with a feeder house.

  Conventionally, as a form of combine, a cutting part is provided at the front part of the machine body, a threshing part having a handling cylinder is provided behind it, and a feeder as a conveying part is interposed between the cutting part and the threshing part. There is a combine. And the feeder as a conveyance part is casing by the feeder house, The termination | terminus is connected with the threshing part, and the communicating part forms the intake port which carries in the threshing part into the threshing grain.

  In such a combine, the cereals harvested by the mowing unit are engaged with the feeder in the feeder house and taken into the threshing unit from the intake port opened at the end of the feeder house and threshed.

When being taken into the threshing part, the cereal is moved in the direction of the barrel as the tip of the barrel is rotated from the inlet at the boundary with the end of the feeder house by the impeller wound around the outer periphery of the barrel end stored in the threshing part. While being caught in, the handle cylinder, especially the impeller's lower rotation direction, will be taken in. Therefore, at the intake port at the border with the feeder house end, the grains are collected from the intake port while concentrating in the direction of the lower rotation side of the handling cylinder, particularly the impeller. (For example, refer to Patent Document 1).

JP 2008-182904 A

  As described above, when the cereal is taken into the handling cylinder, particularly in the direction of the lower rotation of the impeller, and taken into the handling chamber at the inlet of the boundary with the feeder house end, The amount of cereals carried in from the intake port is depopulated within the width of the intake port, and the portion where the distribution of the intake amount at the intake port is located on the lower rotation side of the handling cylinder becomes large. Therefore, as the intake time elapses, a large amount of cereals stays in the vicinity of the end of the intake port, particularly at one end of the partition plate around the intake port that forms the intake port. There is a possibility that the staying cereals that have not been carried into the handling chamber from the mouth are locked by the return path feeder and returned to the inside of the feeder house to reach the feeder house start end opening.

  This invention was made in order to solve the said subject, and it aims at providing the combine which can take in the threshing part from the conveyance part via an intake port without omission of the harvested cereal. To do.

  The invention according to claim 1 provides a harvester at the front part of the fuselage, a threshing part having a handling cylinder at the rear thereof, and a combine having a conveying part interposed between the harvester and the threshing part, At the end of the feeder house that constitutes the transport unit, an intake port for carrying the harvested cereals into the threshing unit is formed, and the upper edge of the intake port located on the lower rotation side of the handling cylinder is expanded upward. An enlarged intake is formed.

  According to a second aspect of the present invention, in the first aspect of the invention, the rotation shaft of the impeller wound around the outer periphery of the front end of the handle cylinder is offset from the center of the intake port toward the lower rotation side of the handle cylinder, and at least The enlarged intake port is formed by expanding upward from the position below the rotation shaft of the impeller to the upper edge of the intake port located on the lower side of the impeller rotation.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the enlarged intake port is located within the range of the rotation trajectory of the impeller.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the shaft of the impeller wound around the outer periphery of the front end of the handling cylinder is inserted from the center of the intake port. It is offset in the direction of the lower side of rotation, and a substantially delta-shaped intake dead space formed by the tip rotation trajectory of the impeller and the upper edge level of the intake port is overlapped with the enlarged intake port.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the feeder in which the forward feeder is disposed in the feeder house and the backward feeder is disposed in the feeder house is rotated. While being freely stored, the enlarged intake port disposed at the end of the feeder house is substantially the same height as the ceiling plate of the feeder house.

  (1) According to the first aspect of the present invention, the intake port for carrying the harvested cereal rice cake is formed at the terminal end of the feeder house, and the upper end edge of the intake port located on the lower rotation side of the handling cylinder is set upward. In order to form an enlarged intake port, the cereal harvested by the reaping part is locked to the feeder in the feeder house and opened at the end of the feeder house when transported to the threshing part. Threshing processing is carried out by taking it into the threshing section from the entrance. At this time, with the rotation of the front end of the barrel, it is moved toward the lower side of the barrel rotation.

  Then, the amount of cereals brought in from the intake port is depopulated within the width of the intake port, and the portion of the intake amount distribution at the intake port located on the lower rotation side of the handling cylinder becomes large, and the intake time As time elapses, the cereals stay around the end of the intake port, particularly the end of the partition plate that forms the intake port, or the cereals that have not been taken in the threshing part direction There was a possibility that the house would be scattered after it was turned back and engaged with the feeder on the feeder house starting end opening side.

  However, since an enlarged intake port is formed at the upper edge of the intake port located on the lower rotation side of the handling cylinder, the cereal grains that tend to stay in this part are removed from the expanded intake port without a partition plate. There is an effect that it is taken into the handling chamber and does not reversely return by the return path feeder, so that the cereals harvested by the apparatus can be taken into the threshing section by the forward path feeder without omission.

  (2) According to the invention described in claim 2, the rotation shaft of the impeller of the handling cylinder is offset from the center of the intake port toward the lower rotation side of the handling cylinder, and the lower rotation of the impeller from at least the position below the rotation shaft of the impeller. Since the enlarged intake port is formed by expanding upward to the upper end edge of the intake port located on the side, the enlarged intake port is expanded at least over the position below the rotation shaft of the impeller. The rotary shaft of the impeller is offset in the direction of the lower rotation of the barrel and the collected cereals are gathered together, so that a large amount of cereals can be reliably taken in from the expanded intake port that is expanded upward. Has the effect of not flowing back unincorporated cereals.

  (3) According to the invention described in claim 3, the enlarged intake is located within the range of the rotation trajectory of the impeller, so that the cereal can be directly taken in from the enlarged intake by the rotation of the impeller. The cereal lump that stays biased at the upper edge of the intake opening is crushed by the rotational stress of the impeller, and is taken in by the enlarged intake opening and delivered to the threshing section without omission. .

  (4) According to the invention described in claim 4, the rotation axis of the impeller is offset, and a substantially delta-shaped intake dead space formed by the tip rotation locus of the impeller and the upper edge level of the intake port is reduced. Since it is overlapped with the enlarged opening, the space part of the so-called `` take-in dead space '', which has essentially no cereal take-in action and does not have the ability to transport to the threshing part by the impeller, is taken up. It is influenced by the operation of carrying in and taking in cereals from the mouth, and it becomes easier to carry in cereals from this intake dead space. There is an effect that a large amount can be delivered to the threshing part as the intake insertion space.

  (5) According to the invention described in claim 5, since the forward feeder is disposed downward and the return feeder is disposed upward in the feeder house, it is conveyed by the forward feeder in the feeder house. Most of the cereals that have come in are taken in from the intake at the end, but the cereals that have not been taken in are turned upwards while being rotated upward. In particular, since the enlarged intake port has an expanded shape that is substantially the same height as the ceiling plate of the feeder house, the intake operation of the enlarged intake port functions from the ceiling plate to the lower side of the barrel rotation. Therefore, a part of the cereals that have been removed from the inlet at the feeder end portion that is converted from the forward feeder to the backward feeder rolls upward and is regulated by the ceiling plate of the feeder house. At this time, the enlarged intakes are at the same height as the ceiling plate of the feeder house, so the cereals collected at the end of these intakes are efficiently expanded. It will be taken in from a slot, and it has the effect which can prevent the cereals which return by a return path feeder.

It is the side view which showed the whole structure of the combine in embodiment of this invention. It is the front view which showed the structure of the combine feeder house and threshing part in embodiment of this invention. It is the side view which showed the structure of the combine feeder house and threshing part in embodiment of this invention. It is the front view which showed the structure which expanded the intake of the combine in embodiment of this invention. It is the side view which showed the structure which expanded the intake of the combine in embodiment of this invention.

  Hereinafter, embodiments of a combine according to the present invention will be described in detail with reference to the drawings. A shown in FIG. 1 is a combine according to the present invention, and the combine A is configured by attaching a cutting part 2 and a transport part 4 to the front part of the traveling machine body 1.

  The traveling machine body 1 is provided with a machine body frame 51 on a pair of left and right crawler type traveling units 3, 3, and arranged on the left side of the machine body frame 51 with the threshing unit 5 and the sorting unit 6 positioned above and below. The operation unit 7, the storage unit 8, the prime mover unit 9, and the grain carrying out auger 10 are arranged on the right side of the machine body frame 51 from the front to the rear.

  The cutting unit 2 is configured to connect the right rear portion of the platform 28 to the carry-in port 26 opened at the front end of the feeder house 25 that constitutes the transport unit 4, and the transverse auger with the axis lined in the left-right direction in the platform 28. 29 is provided, and a reciprocating drive type cutting blade 30 is provided at the front end edge of the platform 28 positioned in front of and below the horizontal feed auger 29, and is positioned in front of the reciprocating drive type cutting blade 30 so that the left and right sides of the platform 28 are left and right. A divider 31 is disposed between the front end portions of the side walls, and a take-up reel 44 is disposed above the divider 31 via an elevating mechanism 32.

  The conveyance unit 4 can move the feeder house 25 up and down freely by pivotally supporting the front part of the rectangular cylindrical feeder house 25 extending in the front-rear direction around the axis in the left-right direction at the front part of the threshing part 5. At the same time, a carry-out port 27 opened at the end of the feeder house 25 is connected to the handling chamber 22 of the threshing unit 5. The structure of the transport unit 4 will be described in detail later.

  The threshing unit 5 is a screw-type handling cylinder 23 or the like that is horizontally mounted with its axis oriented in the front-rear direction. The screw-type handling cylinder 23 is a cylindrical barrel having a length substantially equal to the longitudinal length of the threshing unit 5. A take-in portion 24a formed by fixing a pair of spiral-shaped impellers 33 on a conical outer peripheral surface that forms the foremost portion of the body portion 24, and a periphery of the body portion 24. A straight cylindrical handling section 24b formed by fixing a spiral member 24d that is wound around and radially erected, and a dust discharge protrusion 45 is fixed to the outer periphery of the rear end of the body section 24. And a dust discharger 24c. The spiral member 24d is provided with a plurality of teeth 24e with a predetermined interval.

  A rotating shaft 40 is pivotally supported in the longitudinal direction of the machine body at the center of the handling cylinder 23, and the handling cylinder 23 is rotatably provided in the handling chamber 22 around the rotation axis 40. Further, a receiving net 48 is stretched under the handling cylinder 23 excluding the dust discharge port 47, and the entire amount of the harvested cereal mash is introduced from the feeder house 25 to be threshed.

  The sorting unit 6 is a rocking sorter 12 that rocks and sorts the grains threshed by the threshing unit 5, a red pepper 13 that further wind-sorts the sorts selected by the rocking sorter 12, and these The first conveyor 15 that collects the first grain wind-selected by the Chinese potatoes 13 and 14 and the second conveyor 16 that collects the second grain are provided.

  The storage unit 8 can store the first grain recovered by the first conveyor 15 provided in the sorting unit 6.

  The grain carry-out auger 10 is configured to be able to carry out the first grain stored in the storage unit 8 to a loading platform of a transport vehicle.

  The operation unit 7 has an operation column 18 standing at the front portion in the cabin 17, a handle 19 provided at the upper end of the operation column 18, and a driver seat 20 disposed behind the handle 19.

  The prime mover unit 9 is equipped with an engine 21 and the like, and each component unit, that is, the cutting unit 2, the traveling unit 3, 3, the transport unit 4, the threshing unit 5, the sorting unit 6, the storage unit 8, and the grain carry-out The auger 10 is driven.

  Next, the structure of the transport unit 4 and its surroundings will be described in detail with reference to the drawings.

  A feeder 46 is disposed in the feeder house 25 as the transport unit 4, and the drive shaft body 37 is pivotally supported at the rear portion of the feeder house 25 and the driven shaft body 36 is pivotally supported at the front portion. Yes. Sprockets 52 and 53 are disposed at both ends of the shaft bodies 36 and 37, and a pair of left and right conveying chains 38 and 38 are wound between the sprockets 52 and 53.

  Further, the feeder 46 having a forward feeder 46a on the lower side and a return feeder 46b on the upper side is rotatably accommodated in the feeder house 25. That is, as shown in FIG. 3, the forward feeder 46a, which is a transport path for transporting cereals, is formed between the bottom 25c of the house body 25H and the lower portion of the transport conveyor 35, and the ceiling surface 25d of the house body 25H is formed. And the upper part of the conveyor 35 for conveyance, the return path feeder 46b which conveys a returned grain candy is formed.

  As shown in FIGS. 1 and 2, between the sprockets 53 and 53 disposed at both ends of the drive shaft body 37 and between the sprockets 52 and 52 disposed at both ends of the driven shaft body 36. In addition, a cylindrical shaft body cover 54 is provided. The cylindrical shaft body cover 54 prevents the cereals from being wound around the shaft bodies 36 and 37.

  Further, a cylindrical protective cover 56 protruding toward the side plates 25L and 25R of the feeder house 25 is integrally attached to each of the sprockets 52 and 53. The protective cover 56 also prevents the rice cake from being wound around the shaft bodies 36 and 37. Further, a fixed scraper 57 is provided on the peripheral surface of the protective cover 56 with a convex portion protruding in the circumferential direction. The fixed scraper 57 prevents the candy from being wrapped around the drive shaft body 37 by hooking and tearing the candy from the convex portion.

  In the feeder house 25, the transfer conveyor 35 lays a plurality of transfer slats 34 between the transfer chains 38, 38 with a predetermined interval in the transfer direction.

  The transport slat 34 has a base 34a that forms a surface substantially parallel to the traveling direction of the transport chains 38, 38, and a front side of the base 34a (relative to the travel direction of the transport chains 38, 38). 7 has a scraping portion 34b that is bent at a substantially right angle toward the conveyance side (outside) and a mounting portion 34c that is bent at a substantially right angle toward the inside at the rear side. As described above, the base portion 34a and the scraping portion 34b are bent and formed in a substantially L shape in a side view, and the base portion 34a and the attachment portion 34c are bent and formed in a substantially inverted L shape in a side view.

  The transport slat 34 having such a shape is fixed and attached between the left and right transport chains 38, 38 by an attachment member (not shown). That is, the base 34a of the transport slat 34 is fastened and fixed by bolts and nuts through fastening holes 34d and fastening holes (not shown) on the side of the transport chain 38, and the transport slats 34 are fastened and fixed on both the left and right sides. Is done.

  Moreover, the length of the longitudinal direction of the slat 34 for conveyance is made substantially the same as the space | interval between the both-sides board 25L * 25R of the feeder house 25 arrange | positioned substantially parallel. In other words, the transport slats 34 extend to the left and right outside of the left and right transport chains 38 and 38 that are disposed inwardly with respect to the left and right side plates 25L and 25R in the feeder house 25. The feeder house 25 is provided over substantially the entire left-right direction.

  In this way, the transport chains 38, 38 having a plurality of transport slats 34, 34... To be attached rotate as feeders 46 in the feeder house 25, so that the forward feeder 46a side of the transport slats 34 is obtained. The scraping portion 34b protruding in the direction acts on the forward feeder 46a to convey the cereal.

  And since the front side scraping part 34b of the above-mentioned transport slat 34 is projected, the front side scratching part 34b can transport through the feeder 46 while pushing out the kernel, and the kernel remains in the base 34a. It can be smoothly conveyed without doing.

  In addition, a constant gap is formed in the front-rear direction between the ceiling plate 60 of the house main body 25H located at the terminal opening of the feeder house 25 and the upper edge of the intake S as the starting end opening of the handling chamber 22. Therefore, there is a risk that severance and dust may be scattered from the gap portion to the outside of the ceiling plate 60 at the terminal end opening of the feeder house 25 during the operation of taking in the cereal. For this purpose, a rubber hanging plate 62 for closing the gap is arranged between the ceiling plate 60 at the terminal opening of the feeder house 25 and the partition plate 61 above the intake S.

  That is, a rubber mounting plate 63a having an L shape in cross section and a rubber mounting plate 63b having an inverted L shape in cross section are opposed to each other, and a base end portion of the rubber mounting plate 63b is protruded from the partition plate 61 above the inlet S. Is extended above the ceiling plate 60 at the terminal opening of the feeder house 25. The upper part of the rubber dripping plate 62 is sandwiched between the opposing members at the tips of the two rubber mounting plate members 63a and 63b. The lower part is bent and placed above the ceiling plate 60 at the terminal opening of the feeder house 25, and the ceiling plate 60 of the house body 25 </ b> H located at the terminal opening of the feeder house 25 by the rubber hanging plate 62 and the opening at the start of the handling chamber 22. A gap between the upper edge of the intake port S is closed. Therefore, this gap can be always closed by the rotation of the feeder house 25 in the vertical direction.

  Further, a communication plate 59 is provided at the bottom end of the feeder house 25, and the tip of the communication plate 59 extends from the intake S to the inside of the handling chamber 22 and is conveyed through the forward feeder 46 a of the feeder house 25. The cereals are received and smoothly conveyed into the handling chamber 22.

  In the combine A comprised as mentioned above, the conveyance from the grain reaper to the handling chamber 22 is performed as follows.

That is, the divider 31 and the take-up reel 44 cooperate with each other to rake the uncut cereal into the platform 28, cut the stock of the chopped uncut cereal with the reciprocating drive blade 30, The scissors are laterally fed to the substantially central portion by the lateral feed auger 29 and are conveyed into the feeder house 25 from the carry-in entrance portion 26 of the feeder house 25.

  Then, the cereals conveyed into the feeder house 25 are conveyed by the conveying slats 34 of the conveying conveyor 35 along the bottom 25c of the feeder house 25 so as to be scraped upward and finally. The feeder house 25 is conveyed into the handling chamber 22 of the threshing unit 5 through the intake S provided in the carry-out port 27 which is a terminal opening.

  In such a configuration, in the combine A in this embodiment, the terminal opening of the feeder house 25 communicates with the intake S formed in the partition plate 61 that forms the front part of the handling chamber 22, and the feeder house 25. The cereals that have been transported from are taken into the handling chamber 22 through the intake S and threshed by the handling cylinder 23. In the conventional intake S, the cereal take-in action is performed by the rotation of the impeller 33 formed at the tip of the handling cylinder 23, so that the lower side in the rotational direction, that is, the right end of the intake S in FIG. Since the cereals are concentrated and conveyed upward, the cereals may stay in this portion and return to the feeder house 25.

  The gist of the present invention is that the upper end edge portion of the intake port S located on the lower rotation side of the handling cylinder 23 is expanded upward to form such an enlarged intake port KS so as to eliminate such adverse effects. The present invention provides a combine that can smoothly carry the cereal into the handling chamber 22 without omission, so that the cereal does not stay in one part of S.

  The structure of the enlarged intake port KS will be described below.

  That is, the intake S for carrying the harvested cereals into the threshing unit 5 is provided between the terminal outlet of the feeder house 25 and the handling chamber 22 of the threshing unit 5 as shown in FIGS. 3 and 4. The formed partition plate 61 is formed in a substantially rectangular shape. Moreover, the upper end edge of the intake S located on the lower rotation side of the handling cylinder 23 is expanded upward to form the enlarged intake KS.

  The enlarged intake port KS is a trapezoidal opening in which the upper end edge of the conventional rectangular opening is further enlarged upward. The width of the bottom of the trapezoid is about one-half to one-third of the width of the inlet S, and the width of the top of the trapezoid is about one-half of the bottom.

  Further, in a front view from the feeder house 25 toward the front surface of the handling chamber 22, as shown in FIG. 2, the rotation shaft 40 of the impeller 33 of the handling cylinder 23 is rotated from the center of the intake S to the lower rotation side of the handling cylinder 23. It is offset in the direction.

  This is because the offset position is set based on the balance of the overall layout from the reaping part to the threshing part, and the cereals conveyed from the feeder house 25 for such position setting are handled. It tends to stay at the end of the intake S on the lower rotation side of the barrel 23. In order to eliminate the harmful effect, the enlarged intake port KS is formed.

  Moreover, the enlarged intake port KS expands the intake port S upward from the position below the rotating shaft 40 of the impeller 33 to the upper end edge of the intake port S located on the lower side of the impeller 33 rotation. Formed.

  That is, the enlarged intake port KS is formed between the position of the rotation shaft 40 of the impeller 33 and the upper end edge of the intake port S on the lower rotation side of the impeller 33. Accordingly, the enlarged intake port KS is formed. The height of the inlet KS is regulated within this range, and if the height is too close to the rotating shaft 40 of the impeller 33, the cereal may be locked back on the return path feeder 46b instead of being returned, In addition, there is a possibility that the effect of capturing the original staying cereals may be reduced.

  Furthermore, the positional relationship between the impeller 33 and the intake port S is such that the impeller 33 and the intake port S are arranged so that the rotation locus of the impeller 33 overlaps the upper end portion of the intake port S. The enlarged intake port KS is configured so as to overlap within the range of the rotation trajectory of the impeller 33.

  Therefore, the cereals carried out from the carry-out port 27 of the feeder house 25 are brought closer to the lower rotation side within the range of the rotation path of the impeller 33. At this time, the enlarged intake port overlaps with the range of the rotation path. Since KS exists, the cereals brought to the lower rotation side are smoothly transported into the handling chamber 22 of the threshing unit 5 through the enlarged intake KS.

  Conventionally, as shown in FIG. 5, the cereal grains are dammed by the partition plate 61 at the front end of the handling chamber 22 and tend to stay on the feeder house 25 side, but in the embodiment of the present invention, It is possible to prevent the cereal grains that tend to stay in this part from being taken into the handling chamber 22 from the enlarged intake KS without the partition plate 61 and being locked by the return side feeder. The cereals harvested by the harvesting part 2 can be taken into the threshing part 5 from the feeder house 25 without omission.

  In addition, since the conventional intake port S has a rectangular shape, an approximately delta-shaped intake is obtained by the tip rotation locus of the impeller 33, the upper edge level of the intake port S, and the partition plate 61 on the side surface of the intake port S. Dead space DS was formed. Since this intake dead space DS is closed at the front by the partition plate 61 on the front surface of the handling chamber 22, there is no cereal take-in action, and therefore the impeller 33 does not reach the threshing section 5. It was a so-called blind spot that did not contribute to the cereal uptake.

  Therefore, in the embodiment of the present invention, the enlarged intake port KS is formed at the upper edge of the intake port S so that the intake dead space DS communicates with the intake port S, and the tip rotation locus of the impeller 33 is changed. The intake dead space DS formed outward and the enlarged intake port KS are configured to overlap each other.

  Thereby, the portion of the intake dead space DS can directly perform the operation of carrying in and taking in the cereal from the enlarged intake port KS, and it becomes easier to carry in the cereal from the intake dead space DS, Excess cereal grains taken in from the enlarged intake KS are carried into the threshing unit 5 as much as possible using this intake dead space DS.

  Furthermore, as shown in FIGS. 3 and 5, the position of the upper end portion of the enlarged intake port KS is an expanded shape having substantially the same height as the ceiling plate 60 of the feeder house 25.

  Accordingly, when viewed from the longitudinal view of the feeder house 25 (FIGS. 3 and 5), the intake action of the enlarged intake port KS functions in the space D extending from the ceiling plate 60 to the lower side of the rotation of the handling cylinder 23, and the forward feeder 46a. A part of the cereals detached from the intake port S rolls upward at the end portion of the forward path feeder 46a converted from the forward path feeder 46b to the handling path 23 by the impeller 33 while being regulated by the ceiling plate 60 of the feeder house 25. In this case, since the enlarged intake port KS is substantially at the same height as the ceiling plate 60 of the feeder house 25, the expanded intake port KS is collected at the end of these intake ports S. The cereal is efficiently taken in from the enlarged intake KS, and has the effect of preventing the cereal that returns by the return path feeder 46b.

  As shown in FIGS. 2 and 4, a substantially rectangular plate-shaped movable scraper 58 that protrudes toward the protective cover 56 is provided at the bottom of both ends of the transport slat 34. The movable scraper 58 has an effect of scraping the cereals that are wound around the peripheral surface of the protective cover 56 by the rotation of the drive shaft 37 and stays there. As a result, it is possible to prevent the scum from staying around the peripheral surface of the protective cover 56 and to prevent the stalk from being wound around the drive shaft body 37.

  In addition, the movable scraper 58 is disposed with a small gap between the tip edge thereof and the outer peripheral surface of the protective cover 56 described above, so that the action of scraping the cereals is increased and the periphery of the drive shaft body 37 is increased. This prevents the cereals from being wrapped around the bowl. In this way, the movable scraper 58 prevents the scum from staying around the peripheral surface of the protective cover 56, and the sorghum can be steadily taken in from the enlarged intake KS. The problem that the transported cereals stagnate and accumulate can be solved. As a result, the efficiency of carrying cereals from the transport unit 4 to the threshing unit 5 can be improved.

  As described above, since the upper end edge portion of the intake port S located on the lower rotation side in the lower half of the handling cylinder 23 is expanded upward to form the enlarged intake port KS, the intake port In addition to S, cereal grains can be taken into the handling chamber 22 from the expanded intake port KS. As a result, even in the portion of the enlarged intake KS where the cereals tend to stay, the cereal can be steadily taken in from the enlarged intake KS so that the cereals do not stay. In addition, at this time, the cereals conveyed by the forward path feeder 46a are prevented from reversing by the return path feeder 46b, so that the cereals harvested by the reaping part 2 are taken into the threshing part 5 by the feeder 46 without omission. be able to.

A combine S intake port KS expansion intake port DS intake dead space 2 mowing unit 4 transport unit 5 threshing unit 23 barrel 25 feeder house 33 impeller 40 rotating shaft 46a forward feeder 46b backward feeder 60 ceiling plate

Claims (5)

In the combine where a cutting part is provided at the front part of the machine body, a threshing part having a handling cylinder is provided behind it, and a conveying part is interposed between the cutting part and the threshing part,
At the end of the feeder house that constitutes the transport unit, an intake port for carrying the harvested cereals into the threshing unit is formed, and the upper edge of the intake port located on the lower rotation side of the handling cylinder is expanded upward. A combine characterized by forming an enlarged intake.   The rotary shaft of the impeller wound around the outer periphery of the front end of the handle cylinder is offset from the center of the intake port toward the lower rotation side of the handle cylinder, and at least the take-in position located on the lower side of the impeller rotation from the lower position of the impeller rotary shaft The combine according to claim 1, wherein an enlarged intake port is formed by expanding the upper end edge of the mouth upward.   3. The combine according to claim 2, wherein the enlarged intake port is located within a range of a rotation locus of the impeller.   The rotation axis of the impeller wound around the outer periphery of the front end of the handling cylinder is offset from the center of the intake port toward the lower rotation side of the treatment cylinder, and is formed by the tip rotation locus of the impeller and the upper edge level of the intake port. The combine according to any one of claims 1 to 3, wherein a delta-shaped intake dead space is overlapped with an enlarged intake port.   Inside the feeder house, the feeder with the forward path feeder on the lower side and the feeder with the return path feeder on the upper side is rotatably stored, and the enlarged intake port provided at the end of the feeder house is substantially the same as the ceiling plate of the feeder house. The combine according to any one of claims 1 to 4, wherein the combine has the same height.

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