JP2018148868A - Thresher - Google Patents

Abstract

The present invention provides a corn tuft that can be handled while being hardly damaged.
[MEANS FOR SOLVING PROBLEMS] Out of the outer periphery of a corn tufted body 15 located on a receiving net 25, the top of a tuft section 15A in a direction orthogonal to the longitudinal direction of the corn tufted body 15 On the opposite side to the rotation direction R, the tooth-treating teeth 35 come into contact with the portion 15X corresponding to the range 15S up to 60 ° around the center Y of the tuft section 15A and up to the location 15c.
[Selection] Figure 4

Description

  The present invention relates to a threshing apparatus.

  As a threshing device for corn, a handling chamber into which harvested corn tufts are charged and a handling cylinder rotatably provided in the handling chamber are provided. Teeth that are provided on the outer periphery of the barrel so as to protrude outward in the radial direction of the barrel and handle the corn tufts that have been thrown in, and a receiving net provided on the outer periphery of the barrel. There is something provided.

  Moreover, as a threshing apparatus for corn, there exists a thing shown by patent document 1, for example. In the drafting device shown in Patent Document 1, a threshing processed product is fed into a handling chamber from a supply port by a feeder. The handling chamber is provided with a handling cylinder and a receiving net. A plurality of teeth that protrude outward in the radial direction are arranged on the handle cylinder so as to be arranged at intervals in the circumferential direction and the front-rear direction of the handle portion. The barrel is configured to target corn.

Japanese Patent Laid-Open No. 2017-35015

  In the above-described threshing apparatus, corn tufts (the corn seed grains are tufted in a rod shape) are handled and processed by the tooth handling and receiving nets. When rubbed strongly against the receiving net for pressing, seed grains are crushed and easily damaged.

  An object of the present invention is to provide a threshing apparatus in which a corn tuft is hard to be damaged.

The threshing device according to the present invention comprises:
A handling room into which the harvested corn tufts are placed;
A handling cylinder provided rotatably in the handling chamber;
Tooth treatment to handle the treated corn tuft, provided in a state protruding toward the outer side of the treatment drum radial direction on the outer periphery of the treatment drum,
A receiving net provided on the outer periphery of the barrel,
The tooth handling is a rotation direction of the barrel from the top in the cross section in the direction perpendicular to the longitudinal direction of the corn tuft in the outer periphery of the corn tuft located on the receiving net. On the opposite side to the center of the tuft, 60 degrees around the center of the tuft cross section is configured to contact the portion corresponding to the range up to the distant location.

  According to this configuration, in the portion of the outer periphery of the corn tuft that is located on the side opposite to the receiving net side with respect to the center of the tuft cross section, the corn tuft is positioned on the lower side in the barrel rotation direction by the tooth handling. Since the corn tuft is easy to roll on the receiving net, strong rub between the corn tuft and the receiving net does not easily occur, and it is easy to prevent damage such as crushed seed grains. .

  In the present invention, the length of the tooth handle in the barrel diameter direction is set so that the rotation locus of the tip of the tooth handle passes through the center of the barrel relative to the center of the tuft section. It is preferable.

  According to this configuration, even if the corn tuft is slightly lifted from the receiving net, the corn tufted body is located on the opposite side to the receiving net side with respect to the center of the cross section of the outer periphery of the corn tufted body. Since the corn tufts are pushed by the tooth handling, the corn tufts easily roll on the receiving net, and it is easy to avoid strong rubbing between the corn tufts and the receiving net.

  In the present invention, the tooth treatment is a rod-like shape protruding from the outer peripheral portion of the treatment drum toward the outer side in the treatment drum radial direction, and has a receding angle with respect to the rotation direction of the handling drum, It is suitable that it is 335 to 55 degrees.

  According to this configuration, the corn tufted body is not only pushed by the tooth handling toward the lower side of the handle barrel rotation direction but also the tooth handling covers the corn tufted body. Can be difficult to lift from the receiving net.

  In the present invention, a plurality of rod-shaped support members are provided in a posture along the axial direction of the handle cylinder and in a state of being arranged at intervals in the circumferential direction of the handle cylinder. Are supported in a state where they are arranged at intervals in the direction along the axis, and the intervals of the teeth are preferably set to be substantially the same as the length of the corn tuft.

  According to the present configuration, when the corn tufts pass between the tooth handling teeth arranged in the direction of the barrel axis, the longitudinal direction of the corn tufts is or is close to the posture along the direction of the barrel axis. The posture of the corn tufted body on the receiving net is adjusted so that its longitudinal direction is along the axis of the handle cylinder axis, that is, the attitude on the receiving net is easy to roll in the rotating direction of the handle cylinder. Can be done. In addition, since the corn tufts can easily slip through the teeth, the corn tufts can be prevented from being beaten too much by the teeth.

  In the present invention, the rotation trajectory of the tooth handling in one of the bar-shaped support members adjacent to the circumferential direction of the handle cylinder and the rotation trajectory of the tooth handling in the other rod-shaped support member are It is preferable that the position is shifted in the direction of the axis of the handling cylinder.

  According to this configuration, when the corn tufts pass between the teeth that line up in the direction of the barrel axis, the posture adjustment is made so that the corn tufts easily roll in the barrel rotation direction on the receiving net. In addition, since the next tooth-handling acts on the intermediate portion in the longitudinal direction of the corn tuft that has been adjusted in posture, it is easy to roll the corn tuft.

  In the present invention, a plurality of vertical and horizontal beam members arranged in the receiving net in a posture along the axial direction of the handling cylinder and spaced in the circumferential direction of the handling cylinder, and along the circumferential direction of the handling cylinder A plurality of horizontal beam members arranged in a posture and at intervals in the direction of the axis of the handling cylinder, and the plurality of vertical beam members projecting from the plurality of horizontal beam members toward the handling cylinder side Is preferred.

  According to this configuration, a step is formed between the vertical beam member and the horizontal beam member, in which the vertical beam member protrudes from the horizontal beam member toward the handle cylinder side, and the center of the cross section of the corn tufted body The part on the opposite side to the part where the teeth are in contact with is engaged with the vertical beam member due to the step, and the corn tufted body is subjected to movement resistance by the vertical beam member, while against the center of the cross section Since the part opposite to the part that receives the movement resistance is pushed by the tooth handling, the corn tuft is easy to roll on the receiving net.

It is a left view which shows the whole corn harvester. It is a vertical side view of a threshing apparatus. It is a vertical front view of a threshing apparatus. It is explanatory drawing which shows the structure of a tooth-handling and the relationship between a tooth-handling and a corn tuft. It is a vertical side view which shows the front part of a rocking sorter. It is a schematic plan view which shows the threshing apparatus of the state which attached the 1st adjustment member. It is a schematic plan view which shows the threshing apparatus of the state which attached the 2nd adjustment member. It is a VIII-VIII cross-sectional arrow view of FIG. It is IX-IX cross section arrow directional view of FIG. FIG. 8 is a sectional view taken along the line XX in FIG. 7. It is explanatory drawing which shows a corn tuft. It is a longitudinal cross-sectional view which shows the adjustment member provided with another implementation structure. It is a longitudinal cross-sectional view which shows the adjustment member provided with another implementation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a left side view showing the entire corn harvester. The direction [F] shown in FIG. 1 is the forward direction of the traveling vehicle body 1, the direction [B] is the backward direction of the traveling vehicle body 1, the front side direction is the left lateral direction of the traveling vehicle body 1, and the backward direction is the traveling vehicle body. 1 is defined as the right horizontal direction.

[Total composition of corn harvester]
As shown in FIG. 1, the corn harvester includes a traveling vehicle body 1 equipped with a pair of left and right front wheels 2 and equipped with a pair of left and right rear wheels 3 so as to be steerable. A driving unit 4 is formed at the front of the traveling vehicle body 1. A harvesting and conveying portion 6 extends from the front portion of the vehicle body frame 5 toward the front of the vehicle body. The harvesting and transporting unit 6 includes a transporting device 7 and a harvesting unit 8. A rear portion of the transport device 7 is pivotally supported by the vehicle body frame 5. The conveyance device 7 extends between the left and right front wheels 2 in the front-rear direction of the traveling vehicle body 1. The harvesting unit 8 is connected to the front part of the transport device 7. An elevating cylinder 9 is connected to the front end side of the transport device 7 and the vehicle body frame 5. By swinging the transport device 7 up and down with the pivot shaft 9 extending in the lateral direction of the vehicle body by the lift cylinder 9 as a swing fulcrum, the harvesting section 8 can be lifted and lowered between the lowered working position and the raised non-working position. . A threshing device 10 and a grain tank 11 are provided at the rear of the vehicle body frame 5. The grain tank 11 is pivotally supported by the vehicle body frame 5 at the end on the right side of the vehicle body, and ascends and swings in a descending storage posture in which the threshing device 10 descends and swings upward and in an inclined posture that becomes higher toward the left lateral end side. The posture can be changed to the raised discharge posture.

  The corn harvesting work can be performed by running the traveling vehicle body 1 with the harvesting portion 8 in the descending work posture. In the harvesting unit 8, the corn tree is introduced between the pair of left and right harvesting rolls 8 a, and the corn tuft 15 (see FIG. 11) is shredded from the corn tree by the harvesting roll 8 a, and the corn tuft 15 Harvesting takes place. The corn tuft 15 is a tuft of seed grains that are connected in a rod shape and covered with foliage. The harvested corn tuft 15 is transported to the threshing device 10 by the transport device 7 and supplied. In the threshing apparatus 10, a handling process for threshing seed grains from the corn tuft 15 is performed. The threshed seed grains are supplied from the threshing apparatus 10 to the grain tank 11 by the threshing apparatus 12 and stored. By raising the grain tank 11 to the ascending discharge posture, the seed grains stored in the grain tank 11 fall to the right lateral side of the traveling vehicle body 1 and are discharged.

[Configuration of Threshing Device 10]
As shown in FIG. 2, the threshing apparatus 10 includes a threshing machine body 13. A threshing portion 20 for handling and processing the corn tuft 15 is formed on the threshing machine body 13. In the lower part of the threshing machine 13, a sorting unit 40 for sorting the seed grains obtained by the threshing unit 20 from the threshing discharge is formed. At the rear of the threshing machine 13, a shredding device S that shreds the threshing discharge from the threshing unit 20 and the sorting unit 40 is provided.

[Configuration of Threshing Unit 20]
As shown in FIGS. 2 and 3, the threshing unit 20 includes a handling chamber 21. The handling chamber 21 is formed by a front wall 22, a rear wall 23, a top plate 24 and a receiving net 25. An entrance 21 a is provided at the front of the handling chamber 21, and an exit 21 b is provided at the rear of the handling chamber 21. A handling cylinder 26 is provided in the handling chamber 21. The handling cylinder 26 is supported by the front wall 22 and the rear wall 23 via a rotation support shaft 27. The rotation support shaft 27 is driven by the drive mechanism 28, and the handling cylinder 26 is driven in the rotation direction R (see FIG. 3) with the axis X of the rotation support shaft 27 as the rotation center. The receiving net 25 is provided on the outer periphery of the handling cylinder 26.

  As shown in FIG. 2, the handling cylinder 26 includes a scraping unit 30 and a handling processing unit 31. The take-in portion 30 is provided at the front portion of the handling cylinder 26. The handling processing unit 31 is provided at the rear part of the handling cylinder 26. The rear end portion of the scraping portion 30 and the front end portion of the handling processing portion 31 are connected.

  As shown in FIGS. 2 and 3, the handling unit 31 includes six rod-like support members 32. The six rod-like support members 32 are arranged along the circumferential direction of the handling cylinder 26 in a posture along the direction of the axis X. The front end portion of each rod-like support member 32 is supported by the rotation support shaft 27 via the base 30 a of the scraping portion 30. The rear end portion of each rod-like support member 32 is supported by the rotation support shaft 27 via the rear support member 33. Three portions of the rod-shaped support member 32 in the middle portion in the front-rear direction are supported by the rotation support shaft 27 via the middle support member 34. A plurality of teeth 35 are supported on a rod-like support member 32 as an outer peripheral portion of the barrel 26. The plurality of teeth 35 are arranged with an interval D1 in the direction of the axis X. Each handle 35 protrudes from the rod-shaped support member 32 toward the radially outer side of the handle cylinder 26. The handling unit 31 is configured in a bowl shape, and the handling cylinder 26 is configured as a so-called bar-type handling cylinder. In the present embodiment, a rod-shaped tooth handling tooth 35 is employed. It is possible to employ tooth handling with different specific shapes, such as a tooth handling obtained by bending a wire, or a tooth treatment constituted by a plate member. In the present embodiment, six rod-like support members 32 are provided, but it is possible to provide five or less or seven or more rod-like support members 32.

  FIG. 4 is an explanatory diagram showing the configuration of the tooth handling 35 and the relationship between the corn tuft 15 located on the receiving net 25 and the tooth handling 35. A tuft cross section 15A shown in FIG. 4 is a cross section of a tuft portion 15b (see FIG. 11) having a large outer diameter on the proximal end side of the corn tuft 15. This cross section is a cross section in a direction orthogonal to the longitudinal direction of the corn tuft 15.

  As shown in FIG. 4, when the tooth handling 35 contacts the corn tuft 15 located on the receiving net, the outer perimeter of the corn tuft 15 is spaced 60 degrees from the top 15 t in the tuft cross section 15 </ b> A. The portion 15X corresponding to the range 15S up to the location 15c away from the angle a is configured to contact the portion 15X. The portion 15c that is separated from the top 15t by the separation angle a is a tuft on the opposite side of the top 15t from the rotational direction R of the handle 26, that is, the side opposite to the side where the tooth handling 35 moves relative to the top 15t. This is a location away from the separation angle a around the center Y of the cross section 15A. Of the outer periphery of the corn tuft 15, a portion 15X located on the opposite side of the catching net with respect to the center Y of the cross section of the corn is pushed by the handle 35 toward the lower side of the handle barrel rotation direction. The tuft 15 is easy to roll on the receiving net.

  The teeth 35 are supported by the cylinder 26 in an attachment posture having a receding angle b of 45 degrees with respect to the rotation direction R of the cylinder 26. As a length L protruding from the outer peripheral portion of the handle 35 to the outer side of the handle cylinder in the radial direction, the rotation locus T1 of the tip of the handle 35 is more than the center Y in the tuft cross section 15A. The length passing through the side of the axis X) is set. The tooth-handling 35 is in a state of covering the upper side of the corn tuft 15, and a portion 15 </ b> X located on the opposite side to the receiving net side with respect to the center Y of the tuft cross section 15 </ b> A in the outer periphery of the corn tuft 15 Since the handle 35 is pushed toward the lower side in the handle rotation direction, the corn tuft 15 rolls on the receiving net 25 in a state where it is difficult to lift from the receiving net 25.

  In the present embodiment, the receding angle b of 45 degrees is adopted, but the same action and effect can be obtained by adopting the receding angle in the range of 35 degrees to 55 degrees.

  As shown in FIG. 2, the interval D <b> 1 between the teeth 35 in each rod-like support member 32 is set to be substantially the same as the length 15 </ b> L (see FIG. 11) of the corn tuft 15. The distance D1 substantially the same as the length 15L according to the present invention includes an interval equal to the length 15L, an interval slightly longer than the length 15L, and an interval slightly shorter than the length 15L. The rotation trajectory T2 of the tooth-handling 35 in one of the rod-like support members 32 adjacent in the circumferential direction of the treatment barrel 26 and the other of the pair of rod-like support members 32 adjacent in the circumferential direction of the treatment barrel 26. The rotation locus T2 of the tooth-handling 35 of the rod-like support member 32 is displaced in the direction of the axis X. That is, two types of rod-like support members 32 having different attachment positions of the tooth handling teeth 35 in the longitudinal direction of the rod-like support members 32 are alternately arranged in the circumferential direction of the handle barrel 35.

  When the corn tuft 15 passes between the teeth 35 arranged in the direction of the barrel axis X, the longitudinal direction of the corn tuft 15 is in a posture along or close to the direction of the barrel axis X. As described above, the posture of the corn tuft 15 on the receiving net can be adjusted to a posture in which the longitudinal direction is along the direction of the barrel axis X. The next tooth handling 35 presses the intermediate portion in the longitudinal direction of the corn tuft 15 adjusted in posture, and the corn tuft 15 easily rolls on the receiving net.

  As shown in FIG. 3, the receiving network 25 is configured to be divided into two divided receiving networks 25 </ b> A in the circumferential direction of the handling cylinder 26. As shown in FIGS. 2 and 3, each divided receiving net 25 </ b> A has a plurality of horizontal rail members 36 in a posture along the circumferential direction of the handling cylinder 26 and a plurality of postures in a direction along the axis X of the handling cylinder 26. A vertical beam member 37 and a frame member 38 are provided. The plurality of vertical beam members 37 are arranged in a state of being spaced apart in the circumferential direction of the handling cylinder 26, and the plurality of horizontal beam members 36 are arranged in a state of being spaced apart in the direction of the axis X of the handling cylinder 26. Is provided. Each horizontal beam member 36 is configured to be inserted through each vertical beam member 37, both ends of each vertical beam member 37 and both ends of each horizontal beam member 36 are connected to a frame member 38, and each divided receiving mesh 25A is configured as a lattice receiving network.

  As shown in FIG. 4, the end portion 37 a on the side of the handling chamber of each vertical beam member 37 is configured in a lattice shape protruding from each horizontal beam member 36 toward the handling cylinder side. A step is formed between the vertical beam member 37 and the horizontal beam member 36, and on the opposite side of the outer peripheral portion of the corn tuft 15 from the portion where the handle teeth 35 are in contact with the center Y of the tuft cross section 15 </ b> A. When the portion 15d located is engaged with the end portion 37a of the vertical beam member 37 and the corn tuft 15 is pressed by the handle 35, the corn tuft 15 is pressed by the end 37a while receiving movement resistance. The body 15 is easy to roll.

  In the present embodiment, the vertical beam member 37 is configured by a strip plate material whose plate thickness direction is the handling cylinder circumferential direction, and the horizontal beam member 36 is configured by a round bar material. As the crosspiece member, a square bar member, a cylindrical member, a wire rod, or the like can be adopted.

  As shown in FIGS. 2 and 3, a plurality of first adjustment members 61 are attached to the inner surface side of the top plate 24. The plurality of first adjustment members 61 are arranged at intervals in the direction of the axis X. As shown in FIG. 6, the first adjustment member 61 is provided with an inclination angle with respect to a direction orthogonal to the axis X as a feed angle c. The corn tuft 15 is rotated in the circumferential direction of the handling unit 31 by the rotational force provided by the rotation of the handling unit 31 and hits the first adjustment member 61, and depends on the feed angle c of the first adjustment member 61. The guide action guides the fluid to flow toward the outlet 21b. That is, the corn tuft 15 is sent to the outlet 21 b side by the rotation of the handling cylinder 26 and the guidance of the first adjusting member 61. It is adjusted by the first adjusting member 61 so that the feed amount of the corn tuft 15 sent to the outlet 21b side becomes a set amount set by the feed angle c.

  In the threshing unit 20, the corn tuft 15 is put into the front part of the handling chamber 21 through the inlet 21 a by the transport device 7. The introduced corn tuft 15 is scraped into the handling unit 31 along the guide bottom plate 21 c by the double spiral spiral blade 30 b of the scraping unit 30. The corn tuft 15 that has been scraped is handled by the tooth handling 35 and the receiving net 25 while being sent to the outlet 21 b side by the rotation of the handling processing unit 31 and the guidance by the first adjusting member 61. In addition, the corn tuft 15 is handled by being adjusted by the first adjusting member 61 so that the feed amount to the outlet 21b side is set by the feed angle c. The handle 35 is brought into contact with the portion of the outer periphery of the corn tuft 15 corresponding to the range 15S, and the corn tuft 15 is pushed by the handle 35 toward the lower side of the handle barrel rotation direction. The corn tuft 15 is handled and processed while smoothly rolling on the receiving net 25.

  The seed grains shed from the corn tuft 15 by the handling process fall into the sorting section 40 through the leak holes of the receiving net 25. Exhausts such as foliage detached from the corn tuft 15 by the handling process are discharged rearward from the handling chamber 21 through the outlet 21b and enter the shredding device S.

[Configuration of Sorting Unit 40]
As shown in FIG. 2, the sorting unit 40 is provided with an oscillating sorting device 41, a red pepper 42, a first screw conveyor 43, and a second screw conveyor 44.

  The swing sorting device 41 is driven by a drive mechanism 41c, and the rear end side swings up and down with the support shaft 41a on the front end side as a swing fulcrum. Seed grains, foliage fragments, and the like that have fallen from the receiving net 25 are received by the swing sorting device 41, and are moved backward while being subjected to swing sorting and being subjected to wind sorting by the sorting wind from the Kara 42. The seed grains that have fallen from the swinging sorter 41 are collected by the No. 1 screw conveyor 43 and conveyed to the outside of the threshing apparatus 10. The unprocessed processed material dropped from the swing sorting device 41 is collected by the second screw conveyor 44 and conveyed.

  As shown in FIG. 2, the swing sorting device 41 is provided with a sheave case 41K. The sheave case 41K is provided with a glen pan 45, a rear glen pan 46, a chaff sheave 47, a glen sheave 48, and a plurality of strollers 49. The rear side grain pan 46 is provided below the grain side pan 45. The chaff sheave 47 is provided immediately behind the rear side grain pan 46.

  When the sheave case 41K swings back and forth, the specific gravity of the processed material is selected by the glen pan 45 and the rear glen pan 46. The processed product after the specific gravity sorting is transported to the chaff sheave 47. The sorting wind from the tang 42 is blown up from the front lower side of the chaff sheave 47 through the air passage W1.

  An air passage W2 is formed between the glen pan 45 and the rear glen pan 46. The sheave case 41K is provided with a shielding member 52 capable of closing the air passage W2 so as to be attachable and detachable.

  As shown in FIG. 5, a mounting portion 45 a is provided at the rear end portion of the Glen pan 45. The upper end portion 52b of the shielding member 52 is fixed to the attachment portion 45a by a bolt 53. On the rear side of the upper end portion 52b of the shielding member 52, a flat shield portion 52a is provided. In a state where the shielding member 52 is attached to the Glen pan 45, the upper end portion 52b is in a horizontal posture, and the shielding portion 52a is in an inclined posture that is rearwardly lowered from the upper end portion 52b. In the attached state, the shielding portion 52a extends over the rear end portion of the grain pan 45 and the upper surface of the rear side pan pan 46, and over the left and right wall portions 41b of the sheave case 41K in the left-right direction. At both left and right ends of the shielding part 52a, lateral side attachment parts 52c are provided. The left and right lateral attachment portions 52c are fixed to the left and right wall portions 41b by bolts 54, respectively.

  When the shielding member 52 is fixed to the attachment portion 45a and the left and right wall portions 41b, the air passage W2 is closed, and the sorting air can be blocked.

  The upper surface of the rear side grain pan 46 has the shape of a saw blade having a cross section in which a crest 46b and a trough 46c are repeated. When the sheave case 41K swings back and forth, the processed material such as seed grains on the upper surface of the rear side grain pan 46 is pushed up rearward and upward from the trough 46c, beyond the next peak 46b, and further to the next valley 46c. It is transferred to. While repeating this operation, the processed material is conveyed backward while being sorted by specific gravity. In the rear side grain pan 46, the front end valley part 46f located substantially directly below the rear end part of the grain pan 45 is formed deeper than the other valley part 46c. Moreover, the cross-sectional shape of the rear side grain pan 46 after the front end valley part 46f is formed in the same shape.

  With the shielding member 52 attached to the grain pan 45, the lower end of the shielding portion 52a is in contact with the inclined surface between the front end valley portion 46f and the next peak portion 46b, and a new front end valley portion 46a is formed. Yes. The front-rear distance D2 between the new front end valley part 46a and the next peak part 46b is configured to be the same as the front-rear distance D3 between the peak parts 46b after the next peak part 46b. Further, the shielding part 52a is inclined so as to be parallel to the inclined surface 46e extending from the peak part 46b to the valley part 46c. With this configuration, the cross-sectional shape extending between the shielding portion 52a and the next peak portion 46b is close to the cross-sectional shape between the other peak portions 46b. When the sheave case 41K swings back and forth, it is possible to perform the same sorting and transporting operations as the other peaks 46b and valleys 46c on the processed material in the new front end valley 46a.

  When there is no shielding member 52, the seed grain discharged | emitted from the grain pan 45 may fall to the front end valley part 46f. In this case, due to the depth of the front end valley portion 46f, the seed grains remain in the front end valley portion 46f without receiving the sorting wind. When the shielding member 52 is attached, the seed grains discharged from the gren pan 45 are received by the shielding part 52a and fall to the new front end valley part 46a. Then, the shielding part 52a and the inclined surface 46e for feeding the seed grains backward are parallel and the distance D2 between the shielding part 52a and the peak part 46b is equal to the distance D3 between the peak parts 46b. Since they are substantially equal, the seed grains located in the new front end valley portion 46a do not remain located in the new front end valley portion 46a, but are smoothly fed back.

  FIG. 7 is a schematic plan view showing the threshing apparatus in a state where the second adjustment member 62 is attached instead of the first adjustment member 61. The second adjustment member 62 is provided with a feed angle d. The feed angle d of the second adjustment member 62 is set to a feed angle having a gentler slope than the feed angle c of the first adjustment member 61.

  In the threshing apparatus 10 to which the second adjustment member 62 is attached, the corn tuft 15 is being sent to the outlet 21b side by the rotation of the barrel 26 and the guidance by the feed angle d of the second adjustment member 62. The handling cylinder 26 and the receiving net 25 are used for handling. It is adjusted by the second adjustment member 62 so that the feed amount of the corn tuft 15 sent to the outlet 21b side is less than the feed amount adjusted by the first adjustment member 61.

[Configuration of adjustment member]
As shown in FIGS. 3, 8, 9, and 10, the first adjustment member 61 and the second adjustment member 62 are provided with a base portion 63 and a blade portion 64. The blade portion 14 rises from the base portion 63 toward the center side of the handling cylinder 26.

  As shown in FIG. 8, in the first adjustment member 61, the base portion 63 is constituted by a bent end portion of a member constituting the blade portion 64. Connecting portions 65 are formed at four locations of the base portion 63. One connecting hole 66 is provided in each of the four connecting portions 65. The four connecting portions 65 correspond to the four attachment portions 67 formed on the top plate 24. The connection hole 66 of the connection part 65 corresponds to the attachment hole 68 provided in the attachment part 67.

  As shown in FIGS. 6 and 8, in the first adjusting member 61, a connecting bolt 69 as a fastener is passed through four connecting holes 66 and a mounting hole 68 corresponding to the connecting hole 66. By connecting the four connecting portions 65 to the mounting portions 67 corresponding to the connecting portions 65 by the tightening force of the screw 69 and the screw hole member 70, the base portion 63 is mounted in the mounting posture along the top plate 24. 24. The first adjustment member 61 is detachably attached to the top plate 24 by connecting the base portion 63 to the top plate 24.

  As shown in FIGS. 9 and 10, in the second adjustment member 62, the base portion 63 and the blade portion 64 are configured by separate members. The blade part 64 is welded to the base part 63. Connecting portions 71 are formed at four locations of the base portion 63. One connecting hole 72 is provided in each of the four connecting portions 71. The four connection portions 71 correspond to the four attachment portions 67 of the top plate 24. The connection hole 72 of the connection part 71 corresponds to the attachment hole 68 of the attachment part 67.

  As shown in FIGS. 7, 9, and 10, in the second adjustment member 62, the connection bolts 69 are passed through the four connection holes 72 and the attachment holes 68 corresponding to the connection holes 72. The base portion 63 is attached to the top plate 24 in a mounting posture along the top plate 24 by connecting the four connection portions 71 to the corresponding attachment portions 67 corresponding to the connection portions 71 by the tightening force by the screw hole member 70. It is connected. By connecting the base portion 63 to the top plate 24, the second adjustment member 62 is detachably attached to the top plate 24. The four connecting portions 71 are distributed and arranged on the handling chamber inlet side and the handling chamber outlet side with the blade portion 64 interposed therebetween. In the present embodiment, of the four connecting portions 71, two connecting portions 71 on the upper side in the guiding direction are positioned on the handling chamber inlet side, and two connecting portions 71 on the lower side in the guiding direction are on the handling chamber outlet side. Is located.

  By changing the first adjustment member 61 and the second adjustment member 62, the adjusted feed amount can be changed. The first adjustment member 61 is attached to the top plate 24 and the second adjustment member 62 is attached to the top plate 24 by connecting the base portion 63 to the same attachment portion 67 using the same attachment hole 68. It is supposed to be done by.

[Another embodiment]
(1) FIG. 12 is a longitudinal sectional view showing an adjustment member 73 having another embodiment structure. In the adjustment member 73 provided with another implementation structure, the blade | wing part 64 and the base part 63 are comprised by the separate member. The base part 63 is provided with a support part 63 a, the support part 63 a and the blade part 64 are connected by a connecting bolt 74, and the blade part 14 is supported by the base part 63.

(2) FIG. 13 is a longitudinal cross-sectional view showing an adjustment member 75 having yet another implementation structure. Further, in the adjustment member 75 having another implementation structure, two blade portions 64 rise from one base portion 63 toward the center side of the handling cylinder 26.

(3) In the above-described embodiment, an example in which the handling cylinder 26 is configured as a bar-type handling cylinder has been described. It may be configured and implemented.

(4) In the above-described embodiment, the rod-shaped tooth-handling 35 is exemplified, but a tooth-handling obtained by bending a wire rod or a plate-shaped tooth-handling may be employed.

(5) In the above-described embodiment, an example in which a tooth handling having a length that the rotation trajectory T1 of the tip of the tooth handling passes through the center of the treatment cylinder from the center Y of the tuft cross section 15A is shown. The length of the rotation trajectory T1 of the tooth treatment tip passing through the center Y of the tuft cross section 15A, or the rotation trajectory T1 of the tooth treatment tip passing through the mesh receiving side from the center Y of the tuft cross section 15A. You may employ | adopt the tooth handling which has length.

(6) In the above-described embodiment, an example in which the tooth handling having the receding angle b is employed has been described. However, a tooth handling having no receding angle may be employed.

(7) In the above-described embodiment, the example in which the interval D1 between the teeth is substantially equal to the length 15L of the corn tuft 15 is shown, but the length direction of the corn tuft 15 is the handling axis X. The interval between the teeth is shorter than the length 15L of the corn tufts 15 so that the corn tufts 15 pass between the teeth in the circumferential direction. Also good.

(8) In the above-described embodiment, an example is shown in which the vertical beam member 37 employs a receiving net that protrudes from the horizontal beam member 36 toward the handle cylinder side, but the horizontal beam member protrudes from the vertical beam member toward the handle cylinder side. You may employ | adopt a receiving net | network or a receiving net | network with which the handling cylinder side of a horizontal crosspiece member and a vertical crosspiece member is flush | planar.

  The present invention can be applied to a corn harvester including a crawler traveling device and a traveling device in which a wheel and a mini crawler are combined instead of the front wheels and the rear wheels.

DESCRIPTION OF SYMBOLS 15 Corn tuft 15A Tuft cross section 15t Top part 15S Range 21 Handling chamber 25 Receiving net 26 Handling cylinder 32 Bar-shaped support member 35 Handling tooth 36 Horizontal beam member 37 Vertical beam member b Setback angle D1 Interval L Length T1 Rotation locus R Rotation Direction X Axis Y center

Claims (6)

A handling room into which the harvested corn tufts are placed;
A handling cylinder provided rotatably in the handling chamber;
Tooth treatment to handle the treated corn tuft, provided in a state protruding toward the outer side of the treatment drum radial direction on the outer periphery of the treatment drum,
A receiving net provided on the outer periphery of the barrel,
The tooth handling is a rotation direction of the barrel from the top in the cross section in the direction perpendicular to the longitudinal direction of the corn tuft in the outer periphery of the corn tuft located on the receiving net. A threshing device configured to contact a portion corresponding to a range up to 60 degrees apart from the center of the tuft cross section on the opposite side of the tuft.   The length in the barrel direction of the handle is set so that the rotation trajectory of the tip of the handle is passed through the center of the handle relative to the center of the tuft cross section. Threshing equipment. The tooth treatment is a rod-like shape that protrudes from the outer periphery of the treatment drum toward the outside in the treatment drum radial direction and has a receding angle with respect to the rotation direction of the treatment drum,
The threshing apparatus according to claim 1 or 2, wherein the receding angle is 35 to 55 degrees. A plurality of rod-like support members are provided in a state along the axial direction of the handling cylinder and in a state of being arranged at intervals in the circumferential direction of the handling cylinder,
A plurality of the teeth are supported on each of the rod-shaped support members, and are supported in a state of being arranged at intervals in a direction along the axis.
The threshing apparatus according to any one of claims 1 to 3, wherein the interval between the teeth is set to be substantially the same as the length of the corn tuft.   A rotation locus of the tooth handling in one rod-like support member of the rod-like support members adjacent in the circumferential direction of the treatment barrel and a rotation locus of the tooth treatment in the other rod-like support member are axes of the treatment cylinder. The threshing device according to claim 4, which is displaced in the direction of the core. A plurality of vertical and horizontal beam members arranged on the receiving net in a direction along the axis of the handling cylinder and spaced in the circumferential direction of the handling cylinder, and in an attitude along the circumferential direction of the handling cylinder and the handling A plurality of horizontal beam members arranged at intervals in the direction of the axis of the trunk,
The threshing device according to any one of claims 1 to 5, wherein the plurality of vertical beam members protrude from the plurality of horizontal beam members toward the barrel side.

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