JP2014083017A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester for preventing grains from being uselessly discharged to its outside when the harvester body turns.SOLUTION: A combine harvester 10 comprises: a transverse transportation unit 15 for clamping and transporting a stock root portion; a threshing treatment unit 14 for a threshing treatment; a selecting portion 16 for selecting the grains; and a waste straw treating unit 17 for accepting the waste straws from the transverse transportation unit and treating the waste straws. The transverse transportation unit is equipped with culm detection unit for controlling the culm detection quantity in the culm detection unit in proportion to the airflow of a second fun disposed in the selecting portion. The waste straw treating unit is equipped with a waste straw detection unit for controlling the airflow of a fan disposed in the separation unit in proportion to the waste straw detection quantity in the waste straw detection unit. The chaff angle of a chaff sieve 26 is proportionally controlled. The control of the chaff angle inversely proportional to the culm detection quantity and proportional to the waste straw detection quantity is made to prefer the chaff angle increasing control to the chaff angle decreasing control.

Description

  The present invention relates to a combine that controls the chaff angle of a chaff sheave provided in a sorting unit and the air volume of tang and second fans based on the detection results of the cereal detection unit and the rejection detection unit.

  Conventionally, there exists what was disclosed by patent document 1 as one form of a combine. That is, Patent Document 1 discloses a threshing process for threshing a horizontal conveying unit that horizontally conveys cereal while sandwiching the root portion of the harvested cereal and a tip portion of the corn that is horizontally conveyed by the horizontal conveying unit. A combiner, a sorting unit that sorts the grain that has been threshed in the threshing unit, and a waste treatment unit that inherits the waste after the threshing process from the lateral conveyance unit and performs a waste treatment unit is disclosed. Yes. In addition, the waste disposal unit is provided with a waste detection unit that detects the waste carried into the waste processing unit, and the chaff sheave angle provided in the sorting unit is electrically controlled based on the detection result of the waste detection unit. Like to do. In addition, the chaff sheave angle of the preceding chaff sheave is maintained for a certain period of time when the aircraft is turning at the end of the field, and the chaff sheave angle is controlled by detecting the evacuation of the evacuation detector. It is configured to electrically control the air volume of the tang.

  In addition to the Kara (first fan) that pumps the main sorting air from the front and lower toward the chaff sheave, the sub-sorting air is pumped from below to the rear of the chaff sheave. A second fan is provided. Then, the second fan is used to enhance the sorting effect of the second processed material and sawdust.

Japanese Patent No. 2761477

  However, in the combine disclosed in Patent Document 1, for example, when the aircraft is turned, the air volume of the red pepper is controlled so as to be suppressed, but the air volume of the second fan is kept constant. The grain that has not been leaked on the chaff sheave is discharged from the No. 3 outlet to the outside of the machine, resulting in grain loss (so-called No. 3 loss). There is a risk of becoming.

  Then, an object of this invention is to provide the combine which can prevent a grain being discharged | emitted out of the machine wastefully at the time of the turning of a body, etc.

  The combine according to the invention described in claim 1 threshs the horizontal transport unit that horizontally transports the culm while sandwiching the root portion of the harvested cereal, and the tip portion of the cereal that is laterally transported by the horizontal transport unit In a combine provided with a threshing part to be processed, a sorting part for sorting and processing the grains that have been threshed in the threshing part, and a waste treatment part that inherits the waste after the threshing process from the horizontal transport part and performs the waste treatment process, The horizontal transport unit is provided with a cereal detection unit that detects the cereal that is carried in, and controls the air volume of the second fan provided in the selection unit in proportion to the cereal detection amount in the cereal detection unit. The chaff sheave angle of the chaff sheave provided in the control unit is controlled in inverse proportion, and the rejection processing unit is provided with a rejection detection unit that detects the rejection that is carried in. In addition to controlling the air volume of the arabic fish in the department in proportion, The control of the chaff angle that is proportional to the chaff angle of the probe and that is inversely proportional to the detected amount of cereal and also proportional to the detected amount of waste is given priority over the control that increases the chaff angle. It is characterized by making it.

  In such a combine, when the culm detection unit provided in the lateral transport unit detects the culm carried into the lateral transport unit, the air volume of the second fan is controlled in proportion to the culm detection amount in the culm detection unit. The chaff angle of the chaff sheave is controlled in inverse proportion. In addition, when the waste detection unit provided in the waste processing unit detects waste that is carried into the waste detection unit, the amount of waste detected in the waste detection unit is controlled in proportion to the amount of airflow of the red pepper, Controls the chaff sheave angle in proportion. At this time, the control of the chaff angle that is inversely proportional to the detected amount of cereal and proportional to the detected amount of culling gives priority to the control that increases the control over the control that decreases the chaff angle.

  By doing so, for example, when the aircraft is turned, the harvesting of the culm is temporarily interrupted, and the culm detection unit does not detect the cereal that is carried into the lateral transport unit Therefore, the air volume of the second fan is suppressed to the minimum amount. And since a waste detection part does not detect the waste carried in to a waste detection part, a chaff angle is opened to the maximum. Therefore, no grain remains on the chaff sheave with the largest chaff angle. And since the air volume of a second fan is suppressed to the minimum quantity, a grain is not discharged | emitted from the 3rd discharge port wastefully. As a result, it is possible to steadily avoid the occurrence of defects that result in grain loss (so-called third loss).

The combine which concerns on invention of Claim 2 is a combine which concerns on invention of Claim 1, Comprising: When a cereal detection part detects a cereal, and a waste detection part does not detect a waste In such a combine, the cereal detection unit did not detect the cereal, and the chaff sheave angle was controlled to the maximum state and the second fan air volume and the tang air volume were controlled to the minimum state. In the case, and when the rejection detection unit does not detect the rejection, the air flow of the second fan and the red pepper is controlled to the minimum state before the cutting operation or the cutting operation is interrupted or terminated, Control the chaff sheave angle to the maximum. In this way, the sorting function of the sorting unit can be suppressed to the maximum, and the sorting unit can be held in the ready state.

  The combine which concerns on invention of Claim 3 is a combine which concerns on invention of Claim 1 or 2, Comprising: A cereal detection part detects a cereal, and a rejection detection part does not detect a rejection In such a case, the second fan air volume should be controlled in proportion to the amount detected by the cereal detection unit, the chaff angle of the chaff sheave should be controlled to the minimum, and the air volume of the tang must be controlled to the minimum. It is characterized by.

  In such a combine, even when the cereal detection unit detects the cereal, if the rejection detection unit does not detect the rejection, it is assumed that the cutting operation has just started, and the chaff sheave angle is set to the minimum state. In addition to controlling the air flow to the minimum, the air volume of the red pepper is controlled to the minimum state, thereby making it a waiting state for selection. At this time, the air volume of the second fan is controlled to increase or decrease in proportion to the detected amount of cereal.

  According to the present invention, by appropriately controlling the air volume of the second fan when the cutting operation is interrupted when the machine is turning, etc., the grain is unnecessarily discharged outside the machine while maintaining a good sorting function by the second fan. Can be steadily prevented from being lost.

Side explanatory drawing of the combine which concerns on this invention. Side surface explanatory drawing of a horizontal conveyance part. Expansive side explanatory drawing of a cereal detection part. Side surface explanatory drawing of a rejection process part. Explanatory diagram of the interlocking mechanism of the cereal detection detecting mechanism, the smoldering detecting operating mechanism, the chaff angle adjusting mechanism, the tang air volume adjusting mechanism, and the second fan air volume adjusting mechanism. The interlocking mechanism expansion explanatory drawing of a chaff angle adjustment mechanism, a Chinese-style air volume adjustment mechanism, and a second fan air volume adjustment mechanism. Expansive side explanatory drawing (a) of a chaff angle adjustment mechanism, and plane explanatory drawing (b) of a lever support case. II sectional view explanatory drawing of Fig.7 (a). FIG. Time chart of chaff angle, air volume and second air volume.

  The configuration of the present embodiment will be described below with reference to the drawings.

[Description of the entire combine]
1 is a combine according to the present invention. The combine 10 has a machine body 12 mounted on a pair of left and right crawler-type traveling sections 11, and a cutting part 13 is attached to the front end of the machine body 12. And the combine 10 has arrange | positioned the threshing part 14 in the left front part on the body 12, and has arrange | positioned the horizontal conveyance part 15 in the left side of the threshing part 14. FIG. A sorting unit 16 is disposed at a position directly below the threshing unit 14, and a squeezing processing unit 17 is disposed at a rear upper portion of the sorting unit 16 and immediately after the threshing unit 14. Further, the combine 10 is provided with a prime mover section 18 at the front right side on the fuselage 12, a drive section 19 accommodated in the cabin is disposed at a front upper position of the prime mover section 18, and immediately after the drive section 19. The grain storage part (Glenn tank) 20 is arrange | positioned in the position.

  The cutting unit 13 is provided with a cutting blade 21 that cuts cereals that are vegetated in the field, and a cereal conveyance mechanism 22 that delivers the cereals harvested by the cutting blade 21 to the lateral conveyance unit 15. The threshing portion 14 is provided with a handling cylinder 23 that rotates around an axis in the front-rear direction, and a net 24 is stretched at a position directly below the handling cylinder 23. The sorting unit 16 is provided with a swing sorting body 25 that swings and sorts the grains that have leaked through the net body 24 so as to swing back and forth. A chaff sheave 26 and the like are provided in the swing sorter 25. Below the swinging sorter 25, the first basket 27 equipped with the first spiral conveyor for collecting the first grain (the refined grain) which is the first processed material, and the first bowl 27 for sorting and collecting. No. 2 grain 28 that is equipped with a No. 2 spiral conveyor for collecting the No. 2 grain (grain mixed with insufficiently separated straw etc.) that is the No. 2 processed product that has not been disposed is disposed. .

  A front fan (first fan) 31 is disposed in front of and below the swinging sorter 25 and in front of the first bowl 27, and the main sorting wind is directed toward the chaff sheave 26 from the lower bowl 31 (from the front lower side to the rear side). It can be pumped (upward). In addition, a second fan 32 is disposed between the first rod 27 and the second rod 28 so that the sub-selected air can be pumped from the second fan 32 toward the rear portion of the chaff sheave 26, so that the second fan 32 The selection effect such as second grain and sawdust is enhanced. Reference numeral 29 denotes a recovery cylinder (for example, a cereal) which is interposed between the first basket 27 and the grain storage unit 20, and 30 is a front part of the second basket 28 and the swing sorter 25. This is a reduction cylinder that is interposed between the position immediately above and returns the second grain to the sorting process again.

  The prime mover unit 18 transmits power to each drive unit of each working unit such as the reaping unit 13, the threshing unit 14, the lateral conveying unit 15, the sorting unit 16, and the waste disposal processing unit 17 so as to drive each drive unit. I have to.

  In the combine 10 configured in this way, the cereal vegetation vegetated in the field is cut by the cutting blade 21 of the cutting unit 13. The cereals harvested by the cutting blade 21 are inherited by the lateral transport unit 15 via the cereal transporting mechanism 22. In the horizontal transport unit 15, the root part of the grain culm is sandwiched, the head part of the grain culm is laterally transported backward in the threshing part 14, and the tip part is threshed by the handling cylinder 23 of the threshing part 14. . The cereal mash (waste) from which the head portion has been threshed is inherited by the sewage processing unit 17 and is shredded by the slaughter processing unit 17 and discharged outside the apparatus.

  Further, the first grain selected by the chaff sheave 26 of the swing sorter 25 is recovered from the first basket 27 to the grain storage unit 20 via the recovery cylinder 29. Then, the second grain is returned from the second basket 28 through the reduction cylinder 30 into the swing sorter 25 and subjected to sorting again. At this time, the swing sorter 25 swings and sorts the grains. The chaff sheave 26 is entirely pumped with the main sorting wind from the tang 31 and the chaff sheave 26 is further fed with the sub sorting wind from the second fan 32, so that the grains are wind-sorted simultaneously with the rocking sorting. The

  Next, the structure of the chaff sheave 26 of the lateral conveyance unit 15, the waste disposal unit 17, and the sorting unit 16 will be described more specifically.

[Explanation of the horizontal transport unit]
As shown in FIGS. 2 and 3, the horizontal conveyance unit 15 is configured so that a feed chain 40 as a transfer body and a sandwiching body 50 having a culm holding function are opposed to each other on the left side of the threshing unit 14. Configured. The feed chain 40 has an upper transfer side portion 41 that is arranged such that the start end side and the end end side are spaced apart from each other in the front-rear direction, and transfer and turn straight from the front side to the rear side. The sandwiching body 50 is formed to extend straight in the front-rear direction, and is disposed so as to face and separate from the upper transfer side portion 41.

  That is, the sandwiching body 50 has a support body 51 extending in the front-rear direction attached to the lower side edge of the left side wall forming portion 12a (see FIG. 1) of the machine body 12, and a large number of support bodies 51 (7 in this embodiment). The pinch 53 is supported via the vertical sliding rod 52 of the book. The pinch 53 is formed by connecting a number of pinch-forming pieces 54 extending in the front-rear direction in series in the front-rear direction via a connecting pin 55 having an axis line in the left-right direction. The lower end portions of the upper and lower sliding rods 52 are connected to a large number of connecting pins 55 that connect the front and rear adjacent pinching pieces 54, 54 to each other. The upper end portion of each vertical sliding rod 52 is inserted through a cylindrical piece 56 attached to a plurality of pieces (seven in this embodiment) with a space in the front-rear direction on the support body 51 so as to be slidable in the vertical direction. A pressing spring 57 wound around the outer periphery of the vertical sliding rod 52 is arranged between each cylindrical piece 56 and each connecting pin 55 facing downward, and each pinching forming piece 54 is moved by each pressing spring 57. It is elastically biased downward.

  In the horizontal conveyance unit 15 configured as described above, the upper transfer side portion 41 of the feed chain 40 and the pinch 53 elastically urged toward the upper transfer side portion 41 cooperate to cooperate with the stock base portion of the cereal. Grains are gradually conveyed (transferred) to the upper waste disposal unit 17 after being held.

  Here, the pinch forming piece 54 that forms the foremost end is bulged forward in a circular arc shape from the front end edge to the lower end edge to form the start end. The foremost pinching piece 54 is moved up and down about the connecting pin 55 so as to be pivotable up and down, and the leading end of the foremost pinching piece 54 and the upper side of the feed chain 40. Between the transfer side portion 41, the stock base portion of the cereal cocoon K in the horizontal state is taken in and held between the transfer side portion 41 without difficulty.

  Then, when the stock base part of the cereal rice cake K is taken in from the starting end part of the foremost nip forming piece 54, the first vertical slide through the foremost (first) nip forming piece 54 The moving rod 52 slides upward against the elastic biasing force of the first pressing spring 57. Subsequently, when the stock portion of the grain ridge K is transferred to the position of the second nip formation piece 54, the second vertical sliding rod 52 is second through the second nip formation piece 54. It is slid upwardly against the elastic biasing force of the pressing spring 57. In this way, when the stock portion of the grain ridge K is transferred to the position of the n-th nip formation piece 54, the n-th vertical sliding rod 52 is n through the n-th nip formation piece 54. It is slid upwardly against the elastic biasing force of the second pressing spring 57 (in this embodiment, n is 7 or less).

[Description of Exclusion Processing Unit]
As shown in FIG. 1, the rejection processing unit 17 receives the threshing-treated cereals that are transported rearward by the lateral transport unit 15 as rejections, and gradually transfers them toward the center. And a waste disposal mechanism 70 that processes the waste transported by the waste transport mechanism 60. In the present embodiment, a waste cutter is provided as a waste treatment mechanism 70 to shred the waste.

  As shown in FIG. 4, the waste transport mechanism 60 has a start chain side disposed close to the terminal end portion of the feed chain 40, while a terminal chain is disposed rearward on the right side and is extended straight and suspended. An evacuation chain case 61 having a built-in member (not shown), and a clamping rod body 62 which is disposed so as to face directly below the evacuation chain case 61 and clamps the evacuation in cooperation with the evacuation chain. It has. Reference numeral 63 denotes a tine transfer body that is arranged in parallel to the front of the waste chain case 61 and transports the front end of the waste chain. Reference numeral 69 denotes a mounting bracket for attaching the waste chain case 61 to the ceiling portion of the waste treatment unit 17.

  The pinching rod body 62 extends in the left-right direction, and has a rod body 64 formed by curving its left end downward, and a straight left that hangs downward from the left and right sides of the rod body 64. The right and left sliding support rods 65 and 66 and the left and right sliding support rods 67 and 68 that support the left and right sliding support rods 65 and 66 so as to be slidable in the vertical direction are provided.

  The left and right support bodies 67 and 68 are respectively fixed in the evacuation processing section 17 and penetrate the left and right slide support rods 65 and 66 in the vertical direction. The upper and lower ends of the elastic springs 71 and 72 wound around the lower peripheral surface of 66 are restricted. The left and right sliding support rods 65 and 66 are elastically supported by the elastic springs 71 and 72, and the rod body 64 is elastically biased upward via the left and right sliding support rods 65 and 66. .

  In this way, the waste H transported by the lateral transport unit 15 is placed between the elastic spring 71, between the start end of the waste chain and the left end of the rod body 64 formed by bending downward. 72 is carried in against the elastic biasing force of 72, and is conveyed (transferred) to the right side while being sandwiched between the waste chain and the rod body 64. At this time, the left and right sliding support rods 65 and 66 are slid downward according to the amount of the waste H that is carried between and held between the waste chain and the rod body 64. That is, the amount of waste H that is carried in is proportional to the amount of sliding movement of the left and right sliding support rods 65 and 66 downward.

[Explanation of chaff sheave]
As shown in FIGS. 5 to 8, the chaff sheave 26 is disposed from the middle part to the rear end part of the swinging sorter 25 formed in a rectangular frame shape extending in the front-rear direction in plan view. That is, the chaff sheave 26 has a large number of chaff sheave forming pieces 75 formed in a rectangular plate shape extending in the left-right direction between the left and right side walls 25a, 25a of the swing sorter 25 via the left and right pivot support pieces 74, 74. A large number of frames are installed at regular intervals in the front-rear direction. The left and right pivot pieces 74, 74 are each formed in an inverted U shape when viewed from the side, and the left and right pivot pieces 74, 76 are pivoted via pivots 76, 76 that are axially directed to the left and right side walls 25a, 25a. The upper end of 74 is pivotally supported. A chaff sheave forming piece 75 is laid across the left and right pivot pieces 74, 74.

  One of the many chaff sheave forming pieces 75 (one on the rear side in the present embodiment) serves as an operation chaff sheave forming piece 77 that is operated to adjust the chaff angle. The operation chaff sheave forming piece 77 is formed in a rectangular plate shape extending in the left-right direction, and left and right support pieces via left and right support shafts 78 and 78 on the left and right side walls 25a and 25a of the swing sorter 25. 80 and 80 are pivotally mounted, and are attached between the left and right support pieces 80 and 80 in a erected manner.

  The left and right support pieces 80 and 80 have cylindrical upper boss portions 82 and 82 extending in the left-right direction and lower boss portions 83 and 83 arranged in a vertically opposed manner, and both upper and lower boss portions 82 and 82, A rectangular plate-like connecting piece 84, 84 is interposed between the two parts 83, 83 and formed integrally. A rod-shaped reinforcing piece 88 extending in the left-right direction is installed between the left and right lower boss parts 83 and 83 to reinforce the left and right support pieces 80 and 80.

  The left and right support shafts 78 and 78 of the operation chaff sheave forming piece 77 and the pivot shafts 76 and 76 of the chaff sheave forming piece 75 are integrally supported and connected via upper connecting pieces 85 and 85 extending in the front-rear direction. ing. The upper connecting pieces 85, 85 are attached to the left and right side walls 25a, 25a of the swing sorter 25. The lower boss portions 83 and 83 of the operation chaff sheave forming piece 77 and the left and right lower ends of the chaff sheave forming piece 75 are integrally formed by connecting pins 87 and 87 via lower connecting pieces 86 and 86 extending in the front-rear direction. It is pivotally connected.

  With this configuration, the operation chaff sheave forming piece 77 is adjusted by changing the inclination posture of the operation chaff sheave forming piece 77 by swinging the connecting pins 87 and 87 in the front-rear direction about the left and right support shafts 78 and 78. Then, the inclination position of the chaff sheave forming piece 75 is also changed integrally through the lower connecting pieces 86, 86 so that the same inclination attitude as that of the operation chaff sheave forming piece 77 is adopted. At this time, when the inclination postures (chuff angles) of the respective chaff sheave forming pieces 75 and 77 adjacent in the front-rear direction are changed, the openings formed in the vertically communicated state between the chaff sheave forming pieces 75 and 77. The opening amount is adjusted. Here, when the chaff sheave forming pieces 75 and 77 are in a substantially upright posture, the chaff angle θ is maximized (in this embodiment, θ is a maximum opening state of 50 degrees), and the opening amount is approximately horizontal. The chaff angle θ is minimum (in this embodiment, the closed state where θ is 36 degrees). The amount of leakage of grains and the like can be adjusted by appropriately adjusting the opening amount. For example, when wet rice is selected, the opening amount (chaff angle θ) is adjusted to be large.

[Description of Kara]
As shown in FIG. 6, the tang 31 is horizontally mounted with its axis extending in the left-right direction between the front and lower portions of the sorting unit side walls 121, 121 that are erected so as to be opposed to the left and right. Inlet portions 170, 170 are formed in the portions of the sorting portion side walls 121, 121 located on the left and right sides of the tang 31, and the tang support 171 extending in the front-rear direction at the center of the intake openings 170, 170. , 171 are attached to the installation shape. Between the central portions of the red pepper supports 171, 171, the red pepper 31 is rotatably mounted via a red collar shaft 172 having an axis line in the left-right direction.

  On the outer side of the intake openings 170 and 170, there are provided Kara open and close bodies 173 and 173 capable of closing the opening of the intake openings 170 and 170 by about 90%. In other words, the open / close body 173 for Karatsu is a pair of upper and lower opening / closing pieces via upper and lower pivot shafts 177 and 178 to a support body 174 that is vertically extended and attached to the front edge of the sorting portion side wall 121. The front end portions of 175 and 176 are pivotally supported so as to swing up and down. An interlocking connecting piece 179 that protrudes forward is provided at the front end of the upper opening / closing piece 175, and the tip of the second inner wire 216 of the second exclusion detection interlocking wire 215 described later is connected to the front end of the interlocking connecting piece 179. At the same time, the middle part of the interlocking connecting piece 179 and the front part of the lower opening / closing piece 176 are connected via a link 168 extending in the vertical direction. Reference numeral 169 denotes a tension spring interposed between the upper opening / closing piece 175 and the support body 174, and the upper opening / closing piece 175 is elastically biased in the closing direction by the tension spring 169, and the lower portion is connected to the upper opening / closing piece 175 via the link 168. The opening and closing pieces 176 are interlocked and connected so that the upper and lower opening and closing pieces 175 and 176 are opened and closed.

  In the Karatsu open / close body 173 configured as described above, a pair of upper and lower open / close pieces 175 and 176 that are elastically biased by the tension spring 169 are formed above and below the Karatsu support 171 in a substantially horizontal posture. The upper and lower portions of the intake opening 170 are closed. This closed state is a state in which the opening amount of the intake openings 170, 170 is blocked by about 90% (fully closed state). Further, the front end portion of the interlocking connecting piece 179 is moved downward against the tension elastic bias of the tension spring 169 via the second inner wire 216 of the second exclusion detection interlocking wire 215 around the upper pivot shaft 177. When rotated, the rear side of the upper opening / closing piece 175 is rotated upward about the upper support shaft 177 and the rear side of the lower opening / closing piece 176 is rotated downward via the link 168. That is, the upper and lower portions of the intake opening 170 formed above and below the Kara support 171 are opened. This open state is a state in which the opening amount of the intake openings 170, 170 is opened by about 90% (fully open state). Therefore, the open / close body 173 for Karatsu can be opened and closed within the range of about 90% of the opening amount of the intake opening 170. The main selection air volume by the Kara 31 is maximized when the opening amount of the intake opening 170 is maximized to maximize the intake amount, and the intake amount of the intake opening 170 is minimized. The minimum is the minimum. For example, the air volume in the fully closed state can be reduced to approximately 70% of the air volume in the fully open state.

[Explanation of second fan]
As shown in FIG. 6, the second fan 32 is horizontally mounted with its axis extending in the left-right direction between the middle portions of the sorting unit side walls 121, 121 erected so as to be opposed to the left and right. Fan intake openings 180 and 180 are formed in the portions of the selection unit side walls 121 and 121 located on the left and right sides of the tang 31, and the fan support extends in the front-rear direction at the center of the fan intake openings 180 and 180. The bodies 181 and 181 are attached to the installation shape. Between the central portions of the fan supports 181 and 181, a second fan 32 is rotatably mounted via a second fan shaft 182 having an axis line in the left-right direction.

  Fan opening / closing bodies 183 and 183 capable of closing about 90% of the opening amount of the fan intake openings 180 and 180 are disposed on the left and right outer sides of the fan intake openings 180 and 180. That is, the fan opening / closing body 183 is attached to a support body 184 attached to the front end portion of the sorting unit side wall 121 by extending in the vertical direction via the upper and lower pivot shafts 187 and 188. , 186 is pivotally supported so that it can swing up and down. An interlocking connection piece 189 that protrudes forward is provided at the front end of the upper opening / closing piece 185, and a tip portion of the second inner wire 201 of the second culm detection interlocking wire 200 described later is connected to the middle part of the interlocking connection piece 189. At the same time, the middle part of the interlocking connection piece 189 and the front part of the lower opening / closing piece 186 are connected via a link 190 extending in the vertical direction. Reference numeral 191 denotes a tension auxiliary spring interposed between the front end portion of the interlocking connecting piece 189 and the lower portion of the support body 184. The upper opening / closing piece 185 is elastically biased in the opening direction by the tension auxiliary spring 191 and the upper opening / closing piece 185. The lower opening / closing pieces 186 are interlocked and connected to each other via the link 190, and the upper and lower opening / closing pieces 185 and 186 are interlocked with each other.

  In the fan opening / closing body 183 configured as described above, the pair of upper and lower opening / closing pieces 185 and 186 take a substantially horizontal posture by the weight of the upper opening / closing piece 185 against the tensile elastic bias of the auxiliary pulling spring 191. The upper and lower portions of the intake opening 180 formed above and below the fan support 181 are closed. This closed state is a state in which the opening amount of the fan intake openings 180, 180 is blocked by about 90% (fully closed state). Further, when the middle side of the interlocking connecting piece 189 is rotated downward about the upper pivot shaft 187 via the second inner wire 201 of the second grain symptom detecting interlocking wire 200, the tensile elasticity of the tension assisting spring 191 is increased. The rear side of the upper opening / closing piece 185 is pivoted upward about the upper pivot shaft 187 with the assistance of the bias, and the rear side of the lower opening / closing piece 186 is pivoted downward via the link 190. That is, the upper and lower portions of the intake opening 180 formed above and below the fan support 181 are opened. This open state is a state in which the opening amount of the fan intake openings 180, 180 is opened by about 90% (fully open state). Therefore, the fan opening / closing body 183 can be opened and closed within the range of about 90% of the opening amount of the intake opening 180. The sub-selected air volume by the second fan 32 is maximized when the opening amount of the intake opening 180 is maximized to maximize the intake amount, and the intake amount of the intake opening 180 is minimized. The smallest amount is the smallest. For example, the air volume in the fully closed state can be reduced to approximately 70% of the air volume in the fully open state.

[Description of Characteristic Configuration of this Embodiment]
In the configuration as described above, the characteristic configuration of the present embodiment is that, as shown in FIG. 5, the lateral transport unit 15 is provided with a culm detection unit 90 for detecting the culm that is carried in, and the culm detection The amount of air flow of the second fan 32 is controlled in proportion to the amount of cereals detected in the unit 90, and the chaff angle θ of the chaff sheave 26 provided in the selection unit 16 is controlled in inverse proportion. In addition, the waste disposal unit 17 is provided with a waste detection unit 91 that detects the waste that is carried in, and controls the amount of air detected in the waste detection unit 91 in proportion to the air volume of the waste 31, and The chaff angle θ of the chaff sheave 26 is controlled in proportion. The control of the chaff angle θ that is inversely proportional to the cereal detection amount and proportional to the rejection detection amount is given priority over control that increases the chaff angle θ.

(Explanation of cereal detection mechanism)
As shown in FIGS. 2 and 3, the cereal detection unit 90 is configured by providing a cereal detection operating mechanism 92 in the lateral conveyance unit 15. That is, the cereal detection operating mechanism 92 stands up with an arm support 93 extending in the vertical direction on the portion of the support 51 located between the second vertical slide rod 52 and the third vertical slide rod 52. And a base end portion (rear end portion) of a vertically swinging arm 96 extending in the front-rear direction at the lower portion of the arm support body 93 is rotatable up and down via an arm support shaft 97 having an axis line in the left-right direction. It is pivotally supported.

  The tip end portion (front end portion) of the vertical swing arm 96 is connected to an arm connection piece 99 connected to the upper end portion of the second vertical slide rod 52 via a connection link 98. In the middle of the vertically swinging arm 96, the base end portion of the first inner wire 101 of the first grain wrinkle detection interlocking wire 100 and the base end portion of the second inner wire 201 of the second wrinkle detection interlocking wire 200 are interlockedly connected. doing. The distal end portion of the first inner wire 101 is interlocked with a chaff angle adjusting mechanism 95 described later. Reference numeral 102 denotes a first outer wire that slidably covers the peripheral surface except for both ends of the first inner wire 101. The first outer wire 103 protrudes forward from the upper portion of the arm support 93 to the first outer wire 103. The proximal end portion of the outer wire 102 is locked. The distal end portion of the second inner wire 201 is interlocked with the middle portion of the interlocking connecting piece 189 of the second fan 32 described above. Reference numeral 202 denotes a second outer wire that slidably covers the peripheral surface except for both ends of the second inner wire 201, and the second outer wire 103 is protruded forward from the upper portion of the arm support 93. The proximal end portion of the outer wire 202 is locked.

  When configured in this way and the stock portion of the grain ridge K is transferred to the position of the second nip formation piece 54, the second vertical sliding through the second nip formation piece 54 The rod 52 is slid upwardly against the elastic urging force of the second pressing spring 57 (a state where the grain candy K is detected). Then, the arm connecting piece 99 is pushed upward in proportion to it, and the vertical swing arm 96 is rotated upward. Then, when the vertical swing arm 96 is rotated upward, the first inner wire 101 of the first grain syringe detection interlocking wire 100 interlocked with the vertical swing arm 96 is pushed out toward the chaff angle adjusting mechanism 95 side. Thus, the chaff angle adjusting mechanism 95 acts in the direction of decreasing the chaff angle θ between the operation chaff sheave forming piece 77 and each chaff sheave forming piece 75. Further, the second inner wire 201 of the second stalk detection interlocking wire 200 interlockingly connected to the vertical swing arm 96 is slid so as to be pushed out, and acts to open the upper and lower opening / closing pieces 185 and 186. .

  On the other hand, the second up-and-down sliding rod 52 is restored and moved downward by the elastic biasing force of the second pressing spring 57 via the second pinch-forming piece 54 (non-detected state of the cereal K). Then, the chaff angle adjusting mechanism 95 acts in a direction to increase the chaff angle θ of the operation chaff sheave forming piece 77 and each chaff sheave forming piece 75. In addition, the second inner wire 201 of the second stalk detection interlocking wire 200 interlocked to the vertical swing arm 96 is slid so as to be pulled, and acts in a direction to close the upper / lower opening / closing pieces 185 and 186. To do.

  That is, when the corn straw K is detected (in the detection state), the chaff angle θ of each of the chaff sheave forming pieces 75 and 77 is in the minimum opening state and the maximum angle in proportion to the detected amount of the corn straw K. In addition to being controlled between the maximum opening state, the opening / closing amounts of the upper and lower opening / closing pieces 185 and 186 are controlled between the fully open state and the fully closed state. On the other hand, when the cereal K is not detected (in the non-detected state), the chaff angle θ of each of the chaff sheave forming pieces 75 and 77 is controlled to the maximum opening state and the upper and lower opening / closing pieces 185 and 186 are controlled. Is controlled to be fully closed.

(Explanation of the rejection detection unit)
As shown in FIG. 4, the waste detection unit 91 is configured by providing a waste detection operation mechanism 94 in the waste processing unit 17. That is, the squeezing detection operating mechanism 94 is provided with the lever support 110 at the front lower position of the right support 68, and the lever support 110 is provided with a lever support shaft 111 having an axis line in the left-right direction. A lever support boss portion 112 is rotatably fitted on 111 to extend forward and upward from the lever support boss portion 112 to provide a front lever piece 113 and to extend rearward and upward from the lever support boss portion 112. A side lever piece 114 is provided.

  The proximal end portion of the first inner wire 116 of the first exclusion detection interlocking wire 115 is interlocked and connected to the distal end portion of the front lever piece 113. The distal end portion of the first inner wire 116 is interlocked with the chaff angle adjusting mechanism 95. Reference numeral 117 denotes an outer wire that slidably covers the peripheral surface except for both ends of the first inner wire 116, and the outer receiver 118 provided at the front end of the lever support 110 is attached to the first outer wire 117. The base end is locked. Further, the top end portion of the upper surface of the rear lever piece 114 is elastically biased in a direction in which it abuts on the lower end of the right sliding support rod 66. Reference numeral 119 denotes a stopper piece that regulates and adjusts the forward rotation of the front lever piece 113.

  In addition, the base end portion of the second inner wire 216 of the second exclusion detection interlocking wire 215 is interlocked and connected to the middle portion of the front lever piece 113. The distal end portion of the second inner wire 216 is interlocked with the interlocking connecting piece 179 of the open / close body 173 for red pepper. Reference numeral 217 denotes an outer wire that slidably covers the peripheral surface except for both ends of the second inner wire 216. The outer receiver 118 provided at the front end portion of the lever support 110 is attached to the second outer wire 217. The base end is locked.

  Constructed in this way, the waste H is curved against the elastic biasing force of the elastic springs 71 and 72 between the start end of the waste chain and the left end of the rod body 64 formed by bending downward. When the left and right sliding support rods 65 and 66 are carried in, they are slid downward according to the amount of the waste H that is carried and clamped between the waste chain and the rod body 64 (the waste H). Detection state). Then, the top end portion of the upper surface of the rear lever piece 114 that is in contact with the lower end of the right sliding support rod 66 is also rotated downward, and the front lever piece 113 is rotated backward via the lever support boss portion 112. Moved. Then, the first inner wire 116 of the first rejection detection interlocking wire 115 interlockingly connected to the front lever piece 113 is slid so as to pull the chaff angle adjusting mechanism 95, and the chaff angle adjusting mechanism 95 is used for operation. It acts to increase the chaff angle θ between the chaff sheave forming piece 77 and each chaff sheave forming piece 75. In addition, the second inner wire 216 of the second waste detection interlocking wire 215 that is interlocked and connected to the front lever piece 113 is slid so as to pull the interlocking connecting piece 17 of the open / close body 173 for Karatsu, and the upper and lower parts The opening and closing pieces 175 and 176 act to increase the opening amount.

  At this time, the right sliding support rod 66 is slid downward in proportion to (in proportion to) the amount of waste H, and the front and rear lever pieces 113 and 114 are moved around the lever support shaft 111. 4 is rotated clockwise and the first inner wire 116 of the first exclusion detection interlocking wire 115 is pulled, and the chaff angle θ is set to the minimum angle (minimum opening state) via the chaff angle adjusting mechanism 95. ) And the maximum angle (maximum opening state), and the second inner wire 216 of the second exclusion detection interlocking wire 215 is pulled to fully open the upper and lower opening / closing pieces 175, 176. Appropriate control between the closed and fully closed.

  On the other hand, when the left and right sliding support rods 65 and 66 are restored and moved (the state in which the evacuation H is not detected), the chaff angle adjusting mechanism 95 causes the operation chaff sheave forming piece 77 and each chaff sheave forming piece 75 to move. It acts to make the chaff angle θ the minimum angle (minimum opening state) and to actuate the opening amounts of the upper and lower opening / closing pieces 175 and 176 to be fully closed.

(Explanation of chaff angle adjustment mechanism)
As shown in FIGS. 5 to 8, the chaff angle adjusting mechanism 95 includes a support shaft extending portion 78 a formed by extending the left support shaft 78 outward from the left side wall 25 a of the swing sorting body 25 to the left side. The upper end portions of the support plate body 120, the detection unit interlocking lever body 130, and the initial setting lever body 140 are coaxially attached, and the inner wire 101 of the cereal detection interlocking wire 100 is placed at the same position of the detection unit interlocking lever body 130. The front end portion and the front end portion of the inner wire 116 of the exclusion detection interlocking wire 115 are interlockedly connected, and the initial setting lever 160 is interlocked with the initial setting lever body 140 via the adjustment interlocking wire 150. Concatenated.

  The support plate 120 is formed in a polygonal plate shape when viewed from the side, and an upper middle portion is attached to the support shaft extending portion 78a, and a front lower portion is disposed on the left side wall 25a of the swing sorting body 25 via the sorting portion side wall 121. They are connected by connecting bolts 122. A locking piece 123 is formed at the front end of the support plate 120 to lock the tip of the outer wire 151 of the adjustment interlocking wire 150. A spring locking pin 124 is attached to the rear end portion of the support plate 120, and a first tension spring 125 is interposed between the spring locking pin 124 and a midway portion of the initial setting lever body 140 to perform initial setting. The lever body 140 is pulled and biased toward the spring locking pin 124 side. Further, the connecting pin 87 fitted and attached to the lower boss portion 83 of the operation chaff sheave forming piece 77 extends outward to the left to form a connecting pin extending portion 87a. In order to avoid interference with the portion 87a, an arc-shaped avoidance hole 126 is formed in a substantially central portion of the support plate 120. Reference numeral 127 denotes a left side wall avoiding hole formed in the left side wall 25 a of the swing sorter 25, and the left side wall avoiding hole 127 is formed in the same shape so as to coincide with the avoiding hole 126.

  The detection unit interlocking lever body 130 is formed in a substantially pentagonal plate shape in a side view, and a spring locking piece 131 that protrudes outward is formed at the rear edge portion. A second tension spring 134 is interposed between the lower portion of the spring locking 131 and the rear end portion of the lower lever body forming piece 143 of the initial setting lever body 140 described later, so that the detection unit interlocking lever body 130 is disposed. The initial setting lever body 140 is pulled and biased. The detection unit interlocking lever body 130 pivotally supports the rear upper portion of the support shaft extending portion 78a via the inner lever support boss portion 132 so as to be rotatable. A wire connecting pin 133 is projected outwardly at the front end of the detection unit interlocking lever body 130, and the tip of the inner wire 101 of the first grain detection interlocking wire 100 and the first rejection detection are detected on the wire connecting pin 133. The tip of the inner wire 116 of the interlocking wire 115 is connected. In the middle part of the detection unit interlocking lever body 130, the tip end portion of the connecting pin extending portion 87a is interlockingly connected.

  With this configuration, the cereal detection unit 90 detects an increase in the culm K, and slides so that the tip of the inner wire 101 of the culm detection interlocking wire 100 is pushed out as its cereal detection signal. When (relaxed), the front end portion of the detection unit interlocking lever body 130 is pushed upward by the tensile elastic biasing force of the second tension spring 134, and the detection unit interlocking lever body 130 is centered on the support shaft extending portion 78a. In FIG. 7, it is rotated clockwise. Then, the connecting pin extending portion 87a is also rotated clockwise in FIG. 7 in conjunction with the detecting portion interlocking lever body 130. Since the connecting pin 87 integrally formed with the connecting pin extending portion 87a is connected to the lower boss portion 83 of the operation chaff sheave forming piece 77, the lower end edge of the operation chaff sheave forming piece 77 is raised. Thus, the inclination posture of the operation chaff sheave forming piece 77 is changed in the horizontal direction. As a result, the inclination posture of the chaff sheave forming piece 75 is also changed in the horizontal direction integrally with the operation chaff sheave forming piece 77, and is changed in the direction in which the chaff angle θ of the chaff sheave 26 is reduced. That is, the amount of relaxation of the inner wire 116 is increased and changed in proportion to the increase in the detected amount of cereal, and the chaff angle θ (opening amount) of the chaff sheave 26 is decreased in proportion to the increase in the amount of relaxation of the inner wire 116. Changed to

  On the other hand, the culm detection unit 90 detects the decrease of the culm K, and the tip of the inner wire 101 of the culm detection interlocking wire 100 is pulled by the elastic urging force of the pressing spring 57 as the culm detection signal. When sliding in such a manner (tension sliding), the front end portion of the detection unit interlocking lever body 130 is pulled downward against the tensile elastic biasing force of the second tension spring 134, and the detection unit interlocking lever body 130. Is rotated counterclockwise in FIG. 7 about the support shaft extending portion 78a. Then, the connecting pin extending portion 87a is also rotated counterclockwise in FIG. 7 in conjunction with the detecting portion interlocking lever body 130. Since the connecting pin 87 integrally formed with the connecting pin extending portion 87a is connected to the lower boss portion 83 of the operation chaff sheave forming piece 77, the lower end edge of the operation chaff sheave forming piece 77 is lowered. Thus, the inclination posture of the operation chaff sheave forming piece 77 is changed in the vertical direction. As a result, the inclination posture of the chaff sheave forming piece 75 is also changed to the vertical direction integrally with the operation chaff sheave forming piece 77, and the chaff angle θ of the chaff sheave 26 is changed to a direction to be increased. That is, the tensile sliding amount of the inner wire 101 is increased and changed in proportion to the decrease in the detected amount of cereal, and the chaff angle θ (opening amount) of the chaff sheave 26 is increased in proportion to the increase in the tensile sliding amount of the inner wire 101. The direction is changed.

  As described above, the chaff angle θ (opening amount) of the chaff sheave 26 is controlled between the minimum angle (minimum opening state) and the maximum angle (maximum opening state) in inverse proportion to the detected amount of grain. For example, the chaff angle θ of the chaff sheave 26 becomes the minimum angle when the cereal cocoon K is detected above a certain amount, and the chaff angle θ of the chaff sheave 26 becomes the maximum angle when the cereal cocoon K is not detected.

  Further, the waste detection unit 91 detects the increase of the waste H, and the tip of the inner wire 116 of the waste detection interlocking wire 115 is pulled by the elastic biasing force of the elastic spring 72 as a waste detection signal. Thus, the front end portion of the detecting portion interlocking lever body 130 is pulled downward against the tensile elastic biasing force of the second tension spring 134, and the detecting portion interlocking lever body 130 is moved. It is rotated counterclockwise in FIG. 7 around the support shaft extending portion 78a. Then, the connecting pin extending portion 87a is also rotated counterclockwise in FIG. 7 in conjunction with the detecting portion interlocking lever body 130. Then, the lower end edge portion of the operation chaff sheave forming piece 77 is lowered, and the inclined posture of the operation chaff sheave forming piece 77 is changed in the vertical direction. As a result, the inclination posture of the chaff sheave forming piece 75 is also changed to the vertical direction integrally with the operation chaff sheave forming piece 77, and the chaff angle θ of the chaff sheave 26 is increased. That is, the tensile sliding amount of the inner wire 116 is increased and changed in proportion to the increase in the amount of detected waste, and the chaff angle θ (opening amount) of the chaff sheave 26 is increased in proportion to the increased sliding amount of the inner wire 116. Changed in direction.

  On the contrary, the waste detection unit 91 detects a decrease in the waste H and is slid (relaxed) as a waste detection signal so that the tip of the inner wire 116 of the waste detection interlocking wire 115 is pushed out. Then, the front end portion of the detecting portion interlocking lever body 130 is pushed upward by the tension elastic biasing force of the second tension spring 134, and the detecting portion interlocking lever body 130 is centered on the support shaft extending portion 78a in FIG. It is rotated around. Then, the connecting pin extending portion 87a is also rotated clockwise in FIG. 7 in conjunction with the detecting portion interlocking lever body 130. Since the connecting pin 87 integrally formed with the connecting pin extending portion 87a is connected to the lower boss portion 83 of the operation chaff sheave forming piece 77, the lower end edge of the operation chaff sheave forming piece 77 is raised. Thus, the inclination posture of the operation chaff sheave forming piece 77 is changed in the horizontal direction. As a result, the inclination posture of the chaff sheave forming piece 75 is also changed in the horizontal direction integrally with the operation chaff sheave forming piece 77, and is changed in the direction in which the chaff angle θ of the chaff sheave 26 is reduced. That is, the amount of relaxation of the inner wire 116 is increased and changed in proportion to a decrease in the amount of detected waste, and the chaff angle θ (opening amount) of the chaff sheave 26 is decreased in proportion to the increase of the amount of relaxation of the inner wire 116. Changed to

  As described above, the chaff angle θ (opening amount) of the chaff sheave 26 is controlled between the minimum angle (minimum opening state) and the maximum angle (maximum opening state) in proportion to the rejection detection amount. For example, the chaff angle θ of the chaff sheave 26 becomes the minimum angle when the slag H is not detected, and the chaff angle θ of the chaff sheave 26 becomes the maximum angle when the culm K is detected above a certain amount.

  As described above, the control of the chaff angle θ that is inversely proportional to the cereal detection amount and proportional to the rejection detection amount is given priority over the control that increases the chaff angle θ. That is, in the control in the increasing direction of the chaff angle θ, the first inner wire 101 of the first grain wrinkle detection interlocking wire 100 or the first inner wire 116 of the first swallowing detection interlocking wire 115 is the pressing spring 57 or the elastic spring 72. 7 is rotated by the elastic biasing force, and the detecting portion interlocking lever body 130 shown in FIG. 7 is rotated counterclockwise, so that the tilting postures of the operation chaff sheave forming piece 77 and the chaff sheave forming piece 75 are integrally vertical. Changed in direction. On the other hand, in the control in the decreasing direction of the chaff angle θ, the first inner wire 101 of the first grain stalk detection interlocking wire 100 or the first inner wire 116 of the first scouring detection interlocking wire 115 is relaxed, and the first 7 is rotated clockwise by the tension elastic biasing force of the tension spring 134, and the inclined postures of the operation chaff sheave forming piece 77 and the chaff sheave forming piece 75 are integrated in the horizontal direction. Changed to

  As described above, the first inner wire 101 of the first culm detection interlocking wire 100 integrally changes the inclination postures of the operation chaff sheave forming piece 77 and the chaff sheave forming piece 75 based on the corn stalk detection amount, When the first inner wire 116 of the first exclusion detection interlocking wire 115 simultaneously changes the tilt posture of the operation chaff sheave forming piece 77 and the chaff sheave forming piece 75 based on the amount of wrinkle detection , An acting force for integrally changing the inclination posture of each chaff sheave forming piece 75, that is, an elastic biasing force of the pressing spring 57 or the elastic spring 72, which is a tensile force for pulling and sliding the inner wires 101 and 116, is applied to the second. The tension sliding movement of each inner wire 101, 116 is set larger than the tension elastic biasing force of the tension spring 134. And give priority to the relaxation behavior.

  The initial setting lever body 140 includes an upper lever body forming piece 141 extending in the front-rear direction, an intermediate lever body forming piece 142 extending downward from the front end of the upper lever body forming piece 141, and an intermediate lever body forming piece. The lower lever body forming piece 143 extending forward from the lower end of 142 is formed in a substantially S shape in a side view.

  The upper lever body-forming piece 141 pivotally supports the rear end portion of the support shaft extending portion 78a via the outer lever support boss portion 144 so as to be rotatable. The tip of the inner wire 152 of the adjustment interlocking wire 150 is interlocked to the lower part of the midway lever body forming piece 142. The lower lever body forming piece 143 is provided with a first outer locking piece 145 that connects the distal end portion of the outer wire 102 and a first outer locking piece 146 that connects the distal end portion of the outer wire 117. The base end portion of the inner wire 152 is interlocked and connected to a lower portion of an initial setting adjustment lever 160 provided in the operating portion 19 via a connecting piece 161. Reference numeral 162 denotes a lever support case. The adjustment lever support shaft 163 provided in the lever support case 162 pivotally supports the lower end portion of the initial setting adjustment lever 160, and the initial setting adjustment lever 160 is rotated in the front-rear direction. It is possible. Reference numeral 164 denotes a guide body adjusted to the upper end surface of the lever support case 162. The guide body 164 is formed by extending in the front-rear direction a guide groove 165 for engaging and guiding the middle portion of the initial setting adjustment lever 160 stepwise. ing. In this embodiment, a six-step engaging portion 166 is formed in the guide groove 165, and an intermediate portion of the initial setting adjustment lever 160 is engaged with any of the engaging portions 166 so that the initial setting adjustment can be performed. Yes. Reference numeral 167 denotes an outer receiving protrusion.

  With this configuration, when performing the initial setting adjustment, if the intermediate portion of the initial setting adjustment lever 160 is engaged with the desired engaging portion 166, the base end portion is interlocked with the initial setting adjustment lever 160. The inner wire 152 of the connected adjustment interlocking wire 150 is pushed and pulled and slid, and the initial setting lever body 140 interlocked and connected to the distal end portion of the inner wire 152, and the second tension spring 134 to the initial setting lever body 140. It is possible to set the initial posture of the detection unit interlocking lever body 130 connected via the. As a result, the initial inclination posture of the operation chaff sheave forming piece 77, and further the initial inclination posture of the chaff sheave forming piece 75, that is, the initial chaff angle θ of the chaff sheave 26 can be set according to the situation of the harvested rice or the like. it can.

  In the present embodiment, when the third stage engaging portion 166 is the standard position and the control width from the minimum angle to the maximum angle of the chaff angle θ is controlled on the side where the chaff angle θ is small, the initial setting adjustment lever When the engagement position of 160 is appropriately selected for the second-stage or first-stage engagement portion 166, while the control width from the minimum angle to the maximum angle of the chaff angle θ is controlled on the side where the chaff angle θ is large. The engagement position of the initial setting adjustment lever 160 is appropriately selected as any one of the engagement portions 166 in the fourth to sixth stages. For example, the control range from the minimum angle to the maximum angle is set to 14 degrees, and the minimum angle of the chaff angle θ in the third stage engaging portion 166 that is the standard position is 36 degrees and the maximum angle is 50 degrees. It is set as follows. Similarly, the minimum angle of the second stage chaff angle θ is set to 32 degrees, the maximum angle is 46 degrees, the minimum angle of the first stage chaff angle θ is 28 degrees, and the maximum angle is set to 42 degrees. . The minimum angle of the fourth stage chaff angle θ is 40 degrees, the maximum angle is 54 degrees, the minimum angle of the fifth stage chaff angle θ is 46 degrees, the maximum angle is 60 degrees, and the sixth stage chaff angle θ is The minimum angle is set to 52 degrees, and the maximum angle is set to 66 degrees.

[Description of automatic control of chaff angle]
Next, automatic control of the chaff angle θ of the chaff sheave 26 and the opening / closing amount of the fan opening / closing body 183 based on the detection result of the culm K by the culm detection unit 90 (hereinafter also referred to as “granule interlocking”), The automatic control of the chaff angle θ of the chaff sheave 26 and the opening / closing amount of the Karatsu opening / closing body 173 (hereinafter also referred to as “exhaust interlocking”) based on the detection result of the reject H by the trap detection unit 91 will be described. In the present embodiment, basically, as shown in FIG. 9, the chaff sheave 26, the tang open / close body 173, and the fan open / close body 183 are controlled in the following four forms. In FIG. 9, ON is a detection state, OFF is a non-detection state, fully open is a maximum opening state, and fully closed is a minimum opening state.

  (1) When the culm detection unit 90 does not detect the culm K, and when the rejection detection unit 91 does not detect the rejection H, the first cereal is detected as the cereal non-detection signal of the culm detection unit 90. The first inner wire 101 of the wrinkle detection interlocking wire 100 is pulled and slid, and the chaff angle θ of the chaff sheave 26 is controlled to a predetermined maximum angle (maximum opening state). And the 1st inner wire 116 of the 1st waste detection interlocking wire 115 is relaxed as a grain non-detection signal of the waste detection part 91. In this case, the pulling / sliding operation of the first inner wire 101 of the first grain wrinkle detection interlocking wire 100 is prioritized over the loosening operation of the first inner wire 116 of the first swallowing detection interlocking wire 115. The chaff angle θ is held at the maximum angle (maximum opening state). Further, the first inner wire 101 of the first culm detection interlocking wire 100 is pulled and slid as a culm non-detection signal of the culm detection unit 90, and the fan opening / closing body 183 is closed in a fully closed state. Then, the first inner wire 116 of the first waste detection interlocking wire 115 is relaxed as a grain non-detection signal of the waste detection unit 91, and the open / close body 173 for Karatsu is fully closed by the tension elastic biasing force of the tension spring 181. Blocked to state.

  By controlling in this way, the chaff angle θ of the chaff sheave 26 is maintained at the maximum angle (maximum opening state), and grains, swarf, etc. are actively leaked from the chaff sheave 26 to the second pod 28, and the leakage occurs. The dropped cereals, sawdust, etc. are passed through the reduction cylinder 30 and returned to the swing sorter 25 for re-sorting. At this time, the air volume of the red fan 31 with the tang open / close body 173 fully closed and the second fan 32 with the fan open / close body 183 fully closed are respectively controlled to the minimum air volume. As a result, when the machine body 12 is turned, the grains remaining on the chaff sheave 26 without being leaked are wastefully discharged from the third outlet through the centrifugal force, resulting in a loss. Can be prevented.

  (2) When the culm detection unit 90 detects the culm K and the excretion detection unit 91 does not detect the pulverization H, the first culm detection is performed by the culm detection signal of the culm detection unit 90. The first inner wire 101 of the interlocking wire 100 is relaxed (granule interlocking). And the 1st inner wire 116 of the 1st waste detection interlocking wire 115 is relaxed as a grain non-detection signal of the waste detection part 91. In this case, since the second tension spring 134 is pulled and elastically biased in a state where both the first inner wires 101 and 116 are relaxed, the chaff angle θ of the chaff sheave 26 is controlled to the minimum angle (minimum opening state). Further, the second inner wire 201 of the second culm detection interlocking wire 200 is relaxed as a culm detection signal of the culm detection unit 90, and the fan opening / closing body 183 is pulled according to the amount of relaxation, and the auxiliary spring 191 is pulled. Opened by elastic urging force (granule linkage). Then, the second inner wire 216 of the second waste detection interlocking wire 215 is relaxed as a grain non-detection signal of the waste detection unit 91, and the open / close body for red pepper 173 is fully closed by the tension elastic biasing force of the tension spring 181. Blocked to state.

  By controlling in this way, it is possible to enter a state of waiting for rough selection by the chaff sheave 26, restrict the amount of leakage from the chaff sheave 26, and suppress the mixing of swarf etc. under the chaff sheave 26. At this time, the air volume of the red pepper 31 is controlled to the minimum air volume since the open / close body for red pepper 173 is in a fully closed state. The air volume of the second fan 32 is changed according to the opening / closing amount of the fan opening / closing body 183 that is changed according to the detected amount of the culm (linked culm).

  (3) When the culm detection unit 90 detects the culm K and the excretion detection unit 91 detects the excretion H, the first culm detection is performed based on the culm detection signal of the culm detection unit 90. The first inner wire 101 of the interlocking wire 100 is relaxed (granule interlocking). Then, the first inner wire 116 of the first exclusion detection interlocking wire 115 is pulled and slid as an exclusion detection signal of the exclusion detection unit 91 (exhaust interlocking). In this case, since the operation of the first inner wire 116 that is pulled and slid has priority over the operation of the relaxed first inner wire 101, the chaff angle θ of the chaff sheave 26 is controlled to an angle corresponding to the amount of evacuation detected. (Exclusion interlocking) Further, the second inner wire 201 of the second culm detection interlocking wire 200 is relaxed as a culm detection signal of the culm detection unit 90, and the fan opening / closing body 183 is pulled according to the amount of relaxation, and the auxiliary spring 191 is pulled. Opened by elastic urging force (granule linkage). And the 2nd inner wire 216 of the 2nd waste detection interlocking wire 215 is pulled and slid as a grain detection signal of the waste detection part 91, and the opening and closing body 173 for Karatsu is opened according to the amount of the tensile sliding. (Exclusion interlocking).

  By controlling in this way, the chaff angle θ of the chaff sheave 26, that is, the opening amount is controlled based on the amount of waste carried into the waste disposal processing unit 17.

  (4) When the culm detection unit 90 does not detect the culm K, and the culling detection unit 91 detects the pulverization H, the cereal non-detection signal of the culm detection unit 90 is the first cereal The first inner wire 101 of the wrinkle detection interlocking wire 100 is pulled and slid, and the chaff angle θ of the chaff sheave 26 is controlled to a predetermined maximum angle (maximum opening state). Then, the first inner wire 116 of the first exclusion detection interlocking wire 115 is pulled and slid as an exclusion detection signal of the exclusion detection unit 91 (exhaust interlocking). In this case, the operation of the first inner wire 101 that is held in the tension sliding state as the grain non-detection signal is prioritized over the operation of the first inner wire 116 that is pulled and slid in accordance with the amount of detected waste. Therefore, the chaff angle θ of the chaff sheave 26 is maintained at the maximum angle (maximum opening state). Further, the first inner wire 101 of the first culm detection interlocking wire 100 is pulled and slid as a culm non-detection signal of the culm detection unit 90, and the fan opening / closing body 183 is closed in a fully closed state. And the 2nd inner wire 216 of the 2nd waste detection interlocking wire 215 is pulled and slid as a grain detection signal of the waste detection part 91, and the opening and closing body 173 for Karatsu is opened according to the amount of the tensile sliding. (Exclusion interlocking).

By controlling in this way, the chaff sheave angle is maintained at the maximum angle (maximum opening state), and grains, swarf, etc. are actively leaked from the chaff sheave 26 to the second ridge 28 and leaked. The cereals, sawdust, etc. are reduced to the swing sorter 25 through the reduction cylinder 30 and re-sorted. At this time, the air volume of the red pepper 31 is changed according to the opening / closing amount of the open / close body for red pepper 173, which is changed according to the detected amount of waste. The air volume of the second fan 32 is controlled to the minimum air volume because the fan opening / closing body 183 is fully closed.
As a result, when the machine body 12 is turned, the grains remaining on the chaff sheave 26 without being leaked are wastefully discharged from the third outlet through the centrifugal force, resulting in a loss. Can be prevented.

  Next, the automatic control of the chaff angle θ will be described more specifically with reference to FIG. In other words, before the work is started (before each drive unit of each working unit is driven), the cereal detection unit 90 does not detect the cereal, and the rejection detection unit 91 does not detect the rejection. As a control, as shown in FIG. 10, the chaff sheave 26 has a maximum chaff angle θ (maximum opening state). Further, the open / close body 173 for tangs is closed in a fully closed state, and the open / close body 183 for fans is closed in a fully closed state.

  When the reaping operation is started (time t1) and the culm detection unit 90 detects the culm K (time t1 is the start time of the culm detection time zone A), the culm detection operation mechanism 92 and the chaff angle adjustment mechanism 95 are detected. In conjunction with each other, the chaff sheave 26 is controlled to be fully closed (minimum opening) after a predetermined time t2 (for example, after 10 seconds). The open / close body 173 for red pepper is kept closed in a fully closed state. The opening / closing amount of the fan opening / closing body 183 is changed according to the amount of cereal detection, and the air volume of the second fan 32 is changed accordingly (growth linking).

  When the waste detection unit 91 detects the waste H at time t3 (time t3 is the start time of the waste detection time zone B), the waste detection operating mechanism 94 and the chaff angle adjusting mechanism 95 are interlocked, and the waste H The chaff angle θ of the chaff sheave 26 according to the amount is appropriately controlled (removal interlocking). As shown in FIG. 10A, the opening amount of the chaff sheave 26 is gradually increased from time t3 to time t4, and is fully opened (maximum opening state) at time t4. From time t3 to time t6, the opening amount of the chaff sheave 26 is linked to the exclusion. The open / close amount of the open / close body for red pepper 173 is changed according to the detected amount of waste, and the air volume of the hot spring 31 is changed accordingly (exhaust interlocking). The opening / closing amount of the fan opening / closing body 183 is changed according to the amount of cereal detection, and the air volume of the second fan 32 is changed accordingly (growth linking).

  At time t6, the detection of the culm K by the culm detection unit 90 is completed (time t6 is the end of the culm detection time region B and the culm interlocking time region D of the fan air volume). From time t6 to time t8, the opening amount of the chaff sheave 26 is fully opened (maximum opening state). The open / close amount of the open / close body for red pepper 173 is changed according to the detected amount of waste, and the air volume of the hot spring 31 is changed accordingly (exhaust interlocking). The fan opening / closing body 183 is closed in a fully closed state.

  At time t8, the detection of the waste H by the waste detection unit 91 is finished (time t8 is the end of the waste-linked time zone C of the Chinese wind volume). After time t8, both the cereal detection unit 90 and the rejection detection unit 91 are in a non-detection state, and the chaff sheave 26 is controlled to be fully opened (maximum open state). Such a time zone is a turning time zone E for turning the aircraft. At the end of the cutting operation, the chaff sheave 26 is in the maximum open state, and the air volume of the tang 31 and the second fan 32 is controlled to the minimum air volume, respectively, so that grains and the like are not left on the chaff sheave 26. .

  When the culm detection unit 90 detects the culm K at time t9, the culm detection actuating mechanism 92 and the chaff angle adjusting mechanism 95 work together, and the chaff sheave 26 is in the minimum open state after a certain time (for example, 10 seconds later). To be controlled.

  As described above, in the present embodiment, the chaff sheave 26, the karaoke opening / closing body 173, and the fan opening / closing body 183 are controlled in the above-described four forms based on the detection results of the cereal detection unit 90 and the rejection detection unit 91. , So that the grain is not wasted and lost outside the machine.

DESCRIPTION OF SYMBOLS 10 Combine 14 Threshing part 15 Lateral conveyance part 16 Sorting part 17 Exclusion processing part 26 Chaff sheave 92 Flour detection operation mechanism 94 Exclusion detection operation mechanism 95 Chaff angle adjustment mechanism

Claims (3)

Threshing process in the threshing unit, the horizontal conveying unit that holds the harvested cereal stock and sandwiches the cereals horizontally, the threshing unit that threshs the tip part of the corn that is horizontally conveyed by the horizontal conveying unit, and the threshing unit In a combine provided with a sorting unit that sorts out the processed grain and a waste treatment unit that inherits the waste after the threshing process from the horizontal transport unit and performs the waste treatment unit,
The horizontal transport unit is provided with a cereal detection unit that detects the cereal that is carried in, and controls the air volume of the second fan provided in the selection unit in proportion to the cereal detection amount in the cereal detection unit. The chaff angle of the chaff sheave provided in the section is controlled in inverse proportion,
The evacuation processing unit is provided with an evacuation detection unit that detects the evacuation that is carried in. The evacuation detection amount in the evacuation detection unit is controlled in proportion to the air volume of the red pepper provided in the sorting unit. The chaff angle is controlled proportionally,
The control of the chaff angle that is inversely proportional to the detected amount of grain and that is proportional to the detected amount of culling gives priority to the control that increases the control over the control that decreases the chaff angle.   If the cereal detection unit detects the cereal and the evacuation detection unit does not detect the refusal, the chaff sheave angle is controlled to the maximum state, and the second fan air volume and the tang air volume are minimized. The combine according to claim 1, wherein the combine is controlled to the following state. When the cereal detection unit detects the cereal and the rejection detection unit does not detect the rejection, it controls the air volume of the second fan in proportion to the detection amount of the cereal detection unit,
The combine according to claim 1 or 2, wherein the chaff angle of the chaff sheave is controlled to a minimum state, and the air volume of the tang is controlled to a minimum state.

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