JP2010063397A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester regulating a suction wind velocity of a cross-flow fan according to the amount of a mixture (grains) in a separation part, and improving separation efficiency by winnowing in the separation part. <P>SOLUTION: A tongue part 203 is freely openably and closably included according to the amount of the mixture detected with a detecting means 215. The tongue part is opened and closed in drivable connection to the opening and closing of a shutter 216 of the winnower 132 on the basis of the amount of the mixture detected with the detecting means 215. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a carp and a rear part of the carp, arranged at the rear part of the sorting part, and the upper and lower rear parts are covered with a fan casing, and the lower rear part of the fan casing is covered with a tongue part. More specifically, the present invention relates to a combine that includes a tongue that can be opened and closed in accordance with the amount of the mixture detected by a detection means.

  In the conventional combine, the cereals harvested by the harvesting part at the front end of the fuselage are threshed by the threshing part, and the grains or immature grains that have fallen to the chaff sheave and the grain sieve from the flown slab of the sorting part arranged below the threshing part A mixture of grains, swarf, etc., is selected by the sorting wind generated by the Kara, adjusted by the Kara shutter according to the amount of sorting, and the sorting wind, including immature grains, swarf, etc., is sucked by the cross-flow fan. Then, when discharging to the outside of the machine, by providing a guide plate at the start end of the Strollac, the number of grains that are scattered with the sorting wind (No. 3 scattering) is reduced and the recovery rate of the grains is improved (for example, And Patent Document 1).

JP 2005-31354 A

However, in such a combine, even if the Kara shutter of the Kara on the side of the sorting wind is opened and closed, and the amount of the sorting air is adjusted, the suction wind of the cross-flow fan on the side of the sorting air is constant. The direction of the airflow flowing from the Kara side to the cross-flow fan in the sorting unit changes, resulting in poor sorting due to wind sorting of the mixture in the sorting unit, third loss, dust retention and accumulation, etc., and poor sorting efficiency There was a problem.
Therefore, an object of the present invention is to provide a combine that can adjust the suction air speed of the cross-flow fan according to the amount of the mixture (grain) in the sorting section and improve the sorting efficiency by wind sorting in the sorting section. It is in.

  For this reason, the invention according to claim 1 includes a harvesting unit that harvests cereals, a threshing unit that threshs cereals harvested by the harvesting unit, and a selection unit that sorts the grains threshed by the threshing unit. And the sorting unit wind-sorts the mixture containing the grains falling through the chaff sheave and the grain sieve from the cereal plate arranged at the front part of the sorting unit into the first and second items. For the sorting air to be supplied, adjusting the air volume according to the amount of the mixture based on the detection information by the detection means of the mixture amount, and the rear of the Karatsu, the rear of the sorting unit, In the combine comprising: a cross flow fan for covering the upper and lower rear portions with a fan casing, and a front portion of the lower rear fan casing covered with a tongue portion for sucking the sorting air from the tang Part of the detection Depending on the amount of mixture is detected by stage, characterized in that it comprises freely opened and closed.

  According to a second aspect of the present invention, in the combine according to the first aspect, the tongue portion opens and closes in conjunction with the opening and closing of the red pepper shutter based on the amount of the mixture detected by the detection means. .

  According to a third aspect of the present invention, there is provided the combine according to the first aspect, wherein the tongue portion and the red shutter are linked by a link member.

  According to the first aspect of the present invention, there is provided a reaping part for reaping cereals, a threshing part for threshing cereals harvested by the reaping part, and a selection part for selecting the grains threshed by the threshing part. The sorting unit is arranged at the front part of the sorting unit for wind-sorting the mixture containing the grains falling from the cereal plate and passing through the chaff sieve and the grain sieve into the first and second ones. Arrangement of the sorting air to be supplied with the air volume adjusted according to the amount of the mixture based on the detection information by the detecting means of the amount of the mixture, and the rear of this Karatsu, the rear of the sorting portion, the upper and lower rear portions In the combine provided with a cross-flow fan for sucking the sorting air from the tang, which is covered with a fan casing and covered with a tongue at the front of the lower rear fan casing, the tongue is detected by the detection means To the amount of mixture Therefore, if the amount of the mixture in the sorting section is large, the suction speed of the sorting wind by the cross-flow fan can be increased by opening the tongue, and the mixture is efficiently wind-sorted. In addition, it is possible to reliably suck and remove dust and generated dust. Contrary to the above, when the amount of grain in the sorting section is small, the suction speed of the sorting wind by the cross-flow fan is lowered by closing the tongue to prevent the grain that can be sorted and collected from being discharged outside the machine. be able to. Accordingly, it is possible to provide a combine in which the suction air speed of the cross-flow fan is adjusted according to the grain amount in the sorting unit and the sorting efficiency by the wind sorting in the sorting unit is improved.

  According to the second aspect of the present invention, since the tongue portion opens and closes in conjunction with the opening and closing of the red pepper shutter based on the amount of the mixture detected by the detection means, the amount of grain in the sorting portion is large and the red pepper shutter is opened widely. When the air volume is increased, opening the tongue can increase the suction speed of the air that is selected by the cross-flow fan. Dust and the like can be reliably removed by suction. Contrary to the above, when the amount of grain in the sorting unit is small, the opening of the red pepper shutter is reduced, and the sorting air volume is reduced, the sorting air is sucked by the crossflow fan by closing the tongue. It is possible to reduce the wind speed and prevent the grains that can be sorted and collected from being discharged out of the machine. Therefore, it is possible to provide a combine that can adjust the suction air speed of the cross-flow fan in conjunction with the hot air shutter that adjusts the air volume of the hot air, and improves the sorting efficiency by the wind sorting of the sorting section.

  According to the third aspect of the present invention, since the tongue and the red shutter are linked by the link member, the tongue can be opened and closed in conjunction with the opening and closing of the red shutter with a simple configuration. Therefore, it is possible to provide a combine that can adjust the suction air speed of the cross-flow fan in conjunction with the hot air shutter that adjusts the air volume of the hot air, and improves the sorting efficiency by the wind sorting of the sorting section.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 is a right side view of a self-decomposing combine as an example of the present invention, FIG. 2 is a left side configuration diagram of the combine of FIG. 1, FIG. 3 is a side view of a cereal conveyor, and FIG. 4 is a threshing section and a sorting section. FIG. 5 is a schematic diagram showing a power transmission path from the engine to the discharge auger.

  First, reference numeral 1 denotes a pair of left and right track frames on which a pair of left and right traveling crawlers 2 are installed, reference numeral 3 denotes a machine base erected on the left and right track frames 1, and reference numeral 4 denotes a feed cylinder 49 which is stretched on the left side and a handling cylinder 6 And a threshing unit which is a threshing machine having a built-in processing cylinder, a reference numeral 7 is a cutting part including a pulling mechanism 8, a cutting blade 9, and a harvested product conveying means 10, and a reference numeral 13 is a scouring process for facing the staking chain end. , Reference numeral 15 is a Glen tank that carries the straw from the threshing part 4 through the milling cylinder, reference numeral 17 is a discharge auger that carries the straw of the Glen tank 15 out of the machine, reference numeral 19 is a driving handle, and reference numeral 20 is A driver's seat, reference numeral 21 is an engine provided below the driver's seat 20, and is configured such that the self-removing combine 30 continuously harvests and harvests crops such as rice.

  A vertical auger 23 of a discharge auger 17 is provided at the rear portion of the machine base 3 to discharge the soot in the Glen tank 15 to the outside. The Glen tank 15 is provided so as to be rotatable left and right around the vertical auger 23. Thus, the front side of the Glen tank 15 can be rotated outward to be opened. Furthermore, the cereal conveyance device 40 is installed in the rear part of the machine base 3 continuously to the threshing unit 4.

  The harvested corn straw is transported to the rear part by the harvest material transport means 10, and the stockholder side is inherited by the feed chain 49 of the grain straw transporter from the upper end of the harvest material transport means 10, via the handling cylinder supply start end portion. The cereal meal is transported into the threshing device comprising the threshing unit 4 and the sorting unit. A waste transport device 50 having a waste transport chain is disposed at the rear end of the feed chain 49, and a waste processing section including a cutter and a binding machine is formed below the rear of the waste transport chain. After cutting into pieces, it is released uniformly into the field while diffusing, or released without cutting.

  The threshing unit 4 is arranged on the left side in the traveling direction of the combine 30, and the glen tank 15 for storing the selected granules is arranged on the right side of the threshing unit 4. A driver's seat 20 is disposed in front of the Glen tank 15. That is, the driver's seat 20 is disposed on the right front side in the traveling direction of the aircraft. On the other hand, a vertical auger 23 of the discharge auger 17 is erected on the rear side of the Glen tank 15 so that the discharge auger 17 and the Glen tank 15 can be turned sideways around the vertical auger 23. Rotating to facilitates maintenance of the drive system and hydraulic system arranged inside the machine.

  A discharge conveyor is disposed at the bottom of the Glen tank 15 in the front-rear direction, the rear portion of the discharge conveyor 16 communicates with the lower portion of the vertical auger 23, and power is transmitted from the rear portion of the discharge conveyor 16 to the discharge auger 17. The grain in the Glen tank 15 can be discharged from the tip of the discharge auger 17 to a truck or the like. Further, a sorting unit 130 is disposed below the threshing unit 4 to sort the grains from the grains and swarf flowing down from the threshing unit 4 and to transport the refined grains to the glen tank 15, Etc. are discharged out of the machine or transported to the Glen tank 15.

  FIG. 3 shows a left side view of the vicinity of the cereal conveyance device 40. In the above-mentioned threshing unit 4, the cereal conveying device 40 is for conveying while squeezing one end (stock source side) of the harvested cereal, and rejecting and conveying the cereal harvested by the reaping unit 7. A feed chain 49 that conveys to the waste conveying chain 51 of the apparatus, a clip 41 that is disposed above the feed chain 49 and clamps the cereal that is being transported, and the clip 41 to the machine side And a plurality of elastic supports 42 that are elastically supported.

  In this cereal conveyance device 40, the stocker side of the cereal harvested by the reaping part 7 is sandwiched between the opposingly disposed nip 41 and the feed chain 49 and threshed by the handling cylinder 6 in the handling chamber. The portion where the clip 41 and the feed chain 49 are opposed to each other is used as a conveyance path. Then, the waste that has been shed by the threshing unit 4 is passed on to the waste transporting chain 51 of the waste transporting device at the rear end (downstream end) of the feed chain 49, and this waste transporting chain 51. Is conveyed to the waste disposal unit 13.

  The clamp 41 is provided with a support rod 44 fixed by a stay 43 or the like at the left end of the handling chamber cover 4a in the airframe traveling direction, and elastically supported by the support rod 44 via a plurality of elastic supports 42. ing. The pinch 41 has a shape in which a pair of plate-like members are arranged in parallel to the left and right along the feed chain 49, and is formed in a reverse U-shape when viewed in the conveying direction by the feed chain 49. .

  The support rod 44 is a hollow columnar member, and is formed so as to be long in the front-rear direction on the left side in the handling chamber cover 4a and to be arranged in parallel with the pinching rod 41. An elastic support 42 is supported on the side surface of the support rod 44 at regular intervals, and an upper portion of the elastic support 42 is supported and disposed below the elastic support 42. The lower part of the elastic support 42 is pivotally supported by the pin 41 with a connecting pin, and the upper part of the elastic support 42 extends upward from the support bar 44.

  Next, the threshing unit 4 will be described with reference to FIG. The handling chamber 121 formed in the threshing unit 4 is provided with a substantially cylindrical handling cylinder 6 pivoted in the front-rear direction of the machine body, and a plurality of handling teeth 122 a are implanted on the outer peripheral surface of the handling cylinder 6. ing. A semicircular receiving net 123 is detachably provided so as to cover the lower periphery of the barrel 6. On the other hand, the feed chain 49 restrains the stock side of the grain straw while the tip side of the grain straw is inserted below the handling cylinder 6 and the grain straw is conveyed to the rear of the machine body. At this time, threshing is performed by the rotation of the barrel 6 so that grains, sawdust, and the like leak from the receiving net 123.

  Next, the sorting unit 130 will be described. The sorting unit 130 performs the swing sorting by the swing sorting device 131 and the wind sorting by the Kara 132, and is sorted into the first thing, the second thing, the sawdust, and the like.

  The swing sorting device 131 is housed in the machine casing 133. A front end portion of the swing sorting device 131 extends to a position below the front end portion of the handling cylinder 6, and a swing shaft (not shown) is provided at the front lower portion of the swing sorting device 131, and a swing drive mechanism 134 is provided at the rear portion. The swing sorting mechanism 131 is configured to swing with respect to the machine frame 133 by the swing drive mechanism 134. A fuel tank (not shown) is disposed below the swing drive mechanism 134.

  At the front part of the swing sorting device 131, a drifting grain plate 135 is provided, and a conveying plate 136 is provided at the rear lower side of the drifting grain plate 135. The drift plate 135 and the transport plate 136 are obtained by forming a plate-like member into a corrugated shape, and the processed product (mixture with grains, sawdust, etc.) that has passed through the receiving net 123 is the drift plate 135 and It falls on the transport plate 136 and is transported to the rear of the machine body by the swing of the swing sorter 131. In addition, a net-like grain sheave 137 that is a second sorting unit is connected to the rear of the transport plate 136, and the first sorting unit is disposed above the grain sheave 137 and the transport plate 136 and behind the drifting grain plate 135. A chaff sheave 138 is mounted. Further, a Strollac 139 is disposed behind the chaff sheave 138.

  The chaff sheave 138 is composed of a plurality of chaff fins, and can adjust the opening degree of the chaff fins according to the amount of processed material to be input. That is, one end of the upper and lower sides of the chaff fin is pivotally supported by the swing sorting device 131 and pivotally connected to swing plates provided on the left and right sides of the chaff sheave 138, and the other end is provided on both the left and right sides of the chaff sheave 138. It is pivotally connected to the sliding plate. The sliding plate is swung integrally with the swing sorting device 131, and an adjusting lever is pivotally connected to the sliding plate, and the sliding plate is slid by loosening or pulling the wire connected to the adjusting lever. The plate is slid back and forth. The adjustment lever is urged in a direction to make the inclination angle of each chaff fin small (lay down) by a spring provided on the opposite side of the wire.

  Then, when the angle of the chaff fin is changed by sliding of the sliding plate and the inclination angle of the chaff fin is made large (standing), the opening amount of the chaff sheave 138 is increased to increase the amount of grain leakage, When the inclination angle is made small (sleeps), the opening of the chaff sheave 138 is made small to reduce the amount of grain leakage.

  Thus, the grains and fine swarf pass down the chaff sheave 138 and fall downward, and the swarf and the like larger than the opening of the chaff sheave 138 are conveyed backward. At this time, an air flow from the front to the rear of the sorting unit 130 is generated between the chaff sheave 138 and the Glen sheave 137 by the tang ridge 132, and a part of the fine swarf is blown rearward and separated from the grain. .

  In addition, a red pepper 132 is disposed below the front part of the front grain board 135 and below the front part of the rear grain board 136 of the swing sorting device 131 so as to blow the sorting wind to the chaff sheave 138 and the grain sieve 137.

  A suction fan 140 is horizontally installed in the vicinity of the rear end portion of the oscillating sorting device 131, and dust that has entered the flow of sorting wind supplied from the Karatsu 132, dust generated during threshing, etc. The air is sucked by the fan 140 and discharged outside the apparatus. In addition, although mentioned later, the crossflow fan 140 which is the principal part of this invention is covered with the fan casings 201 and 202 and the tongue part 203. FIG.

  A mixture of grains, shoots adhering grains, immature grains, fine swarf, etc. that have been thrown into the sorting unit 130 and leaked onto the front-flow grain board 135 is removed in the process of being leaked onto the chaff sheave 138. Due to the air flow from the front to the rear of the sorting unit 130 generated by 132, a part of the fine sawdust is blown back. Then, the mixture of grains, shoots adhering grains, immature grains, fine swarf, etc. leaked onto the chaff sheave 138 is conveyed rearward by the swinging of the swing sorter 131. At this time, the grains The immature grain, the branch sticky grains, fine swarf and the like fall below the opening of the chaff sheave 138, and the large swarf is conveyed to the rear of the chaff sheave 138, and is discharged out of the machine through the stroller 139.

  Kernels, immature kernels, branch shoot adhering grains, fine shavings, and the like that have fallen below the opening of the chaff sheave 138 are leaked onto the backflow grain plate 136 and the Glen sieve 137. At this time as well, a part of the fine swarf is blown away and separated by the sorting wind from the Karatsu 132.

  Of the grains, immature grains, shoots adhering grains, and fine swarf that have been leaked onto the grain sieve 137, the cereal grains, immature grain, fine swarf, etc. pass through the grain sieve 137 and fall downward. . At this time, the heaviest grain (the first) is collected in the first collection unit 146 (a depression on the bottom of the sorting unit 130 provided behind the drifted grain plate 145 and accommodates the first conveyor 141). Then, it is conveyed from the first conveyor 141 to the grain tank 15 via the cereal conveyor 144.

  On the other hand, the unprocessed grains mixed with immature grains having a small weight, a part of fine swarf, ear-cut grains, grains and the like are blown backward by the sorting wind from the Karatsu 132, and the second recovery unit 147 (one , Which is a recess in the bottom of the sorting unit 130 provided behind the number collecting unit 146 and accommodates the second conveyor 142), passes through the second reducing conveyor 148 from the second conveyor 142, and flows forward 135 (or chaff sheave 138).

  Here, the driving force transmission path from the engine 21 to the Glen tank 15 and the discharge auger 17 will be described with reference to FIG. A front output shaft 21 a of the engine 21 is connected to an input shaft of a traveling mission case for driving the traveling crawler 2, and transmits a driving force to the traveling crawler 2. On the other hand, a pulley 62 for transmitting driving force to the threshing unit 4 and the sorting unit 130 and a pulley 63 for transmitting driving force to the glen tank 15 and the discharge auger 17 are fitted on the rear output shaft 21b. ing.

  The pulley 62 is connected to an input pulley 109 fixed to an input shaft 108a protruding from the counter case 108 via a V belt 110, and a part of the driving force of the engine 21 is transmitted to the input shaft 108a of the counter case 108. I try to do it. In this way, the power from the engine 21 is transmitted to each processing system via the counter case 108, and the handling cylinder 6, the red pepper 132, the first conveyor 141, the feed chain 49, the conveying device of the cutting unit 7, the cutting blade 9, and the like are driven. It is possible. The counter case 108 can distribute an appropriate speed to each processing system, and is arranged on the left side of the engine 21 and in front of the threshing unit 4.

  Further, the front surface of the bottom of the Glen tank 15 is positioned substantially behind the engine 21, and a drive case 64 serving as a drive unit is disposed on the front wall surface of the bottom of the Glen tank 15. The drive case input shaft 65 protrudes forward from the drive case 64 and a pulley 66 is fitted to the front end of the drive case input shaft 65.

  A V belt 67 is wound around a pulley 63 fitted to the rear end of the rear output shaft 21b and a pulley 66 fitted to the front end of the drive case input shaft 65, and a part of the driving force of the engine 21 is driven to the drive case 64. To the input shaft 65.

  An auger clutch 68 that also serves as a tension pulley for the V-belt 67 is provided between the pulley 63 and the pulley 66 so that the driving force can be transmitted to and cut off from the driving case 64 to the downstream side.

  Spur gears 69a and 69b meshing with each other are housed in the drive case 64. The spur gear 69a is externally fixed to the rear end of the input shaft 65 supported by the drive case 64, and the spur gear 69b is discharged. It is externally fitted and fixed to a conveyor drive shaft 70 which is a rotating shaft fitted to the front end of the conveyor 16.

  A bevel gear 71 is fitted at the rear end of the discharge conveyor 16 and meshes with a bevel gear 73 fitted at the lower end of a screw-type vertical feed conveyor 72 in the vertical auger 23. On the other hand, a bevel gear 74 is fitted on the upper end of the longitudinal conveyor 72, and a bevel gear 75 meshing with the bevel gear 74, an intermediate case 76 in which a chain and a sprocket are installed, and then a screw type in the discharge auger 17 through bevel gears 77 and 78. The transverse feed conveyor 79 is driven to rotate.

  With this configuration, the grain stored in the grain tank 13 is conveyed rearward by the discharge conveyor 16 and is forcibly discharged from the tip of the grain discharge auger 15 through the vertical auger 15a located behind the grain tank 13. Is done.

  Next, a specific configuration of the cross flow fan including a tongue portion that can be opened and closed in conjunction with opening and closing of the Kara shutter according to the grain amount of the sorting unit will be described. FIG. 6 is a schematic diagram of the left side of a red pepper, FIG. 7 is a linkage diagram of the red pepper and the mixture amount detecting means, FIG. 8 is a perspective view of the cross flow fan as viewed from the rear, and FIG. FIG. 10 is a left side schematic view of the lower side of the cross flow fan with the tongue portion enlarged, FIG. 11 is a left side schematic view of the lower side of the cross flow fan showing the rotation of the tongue portion, and FIG. FIG. 13 is a linkage diagram of the tongue and the tongue shutter in which the wire of the tongue is connected to the motor.

  First, as shown in FIG. 6, the above-described Karatsu 132 has a support shaft 212 installed in the left-right direction in the fan casing 211, and a large number of fans 213 are radially attached to the peripheral surface of the fan support shaft 212. By rotating the support shaft 212 with a motor (not shown) or the like, the fan 213 is rotated, and the air sucked from the intake port 214 opened to the left side of the fan casing 211 is blown rearward as a selection air, The mixture leaked into the sorting unit 130 is wind sorted.

  Further, for example, as shown in FIG. 7, one or a plurality of thermostud type wind speed sensors or the like as the mixture amount detecting means 215 are provided from the upper front of the first conveyor 141 to the vicinity of the upper portion of the second conveyor 142. The mixture amount detecting means 215 is connected to the controller c. The mixture amount detection means 215 is not limited to the thermostud type wind speed sensor described above, and the mixture amount detection means 215 by an appropriate method can be installed at an appropriate position.

  Next, the fan casing 211 of the carp 132 is pivotally supported by a support shaft 218 whose axis is directed in the left-right direction via a support piece 217 via a support piece 217, which adjusts the opening amount of the air inlet 214. The red pepper shutter 216 is rotatable in the vertical direction. An arm 219 is attached to the support shaft 218, and the arm 219 is connected to the motor 221 via a wire 220 or the like. The motor 221 is connected to the controller c.

  In such a configuration, when the amount of grain (mixture amount) leaked to the sorting unit 130 is large, these grains prevent the backward flow of the sorting wind from the Karatsu 132, so that the entire mixture is sorted. The necessary wind power is insufficient. Therefore, the controller c operates the motor 221 based on the detection information that the mixture amount detection means 215 detects that the selected air volume is small at the installation position, and the front end of the arm 219 is connected via the wire 220 as shown in FIG. , The rear portion of the red pepper shutter 216 is rotated around the support shaft 218 in the clockwise direction in the left side view, and the air flow of the sorting wind in the red pepper 132 is increased.

  The red pepper shutter 216 can be configured to open at an angle corresponding to the grain amount between the closed position c and the fully opened position d based on the detection information of the mixture amount detection means 215. Therefore, the red pepper 132 can maximize the air flow rate by rotating the red pepper shutter 216 to the position d.

  Contrary to the above, when the amount of the mixture leaked to the sorting unit 130 is small and the sorting wind from the red pepper 132 blown backward is strong due to less shielding by the grains, the sorting and recovery in the mixture Even the grain that should be scattered will be scattered and discharged by the strong sorting wind, resulting in third loss.

  Therefore, the controller c operates the motor 221 based on the detection information that the mixture amount detection means 215 detects that the selected air volume is large at the installation position, and the front end of the arm 219 is connected via the wire 220. By rotating downward, the rear portion of the red pepper shutter 216 is rotated counterclockwise when viewed from the left side about the support shaft 218, and the rotary shutter 216 is rotated in the closing direction. To prevent third loss and so on. Note that the red pepper shutter 216 can be configured to close at an angle corresponding to the amount of the mixture between the position c and the position d based on the detection information of the detection means 215.

  The configuration of the sorting unit 130 that can adjust the air flow rate of the sorting wind generated from the tang ridge 132 as described above is a well-known technique described in, for example, Japanese Patent Application Laid-Open No. 2004-65247. Thus, even if the Karatsu shutter 216 is fully opened according to the amount of the mixture in the sorting section 130, the suction speed of the sorting wind by the transverse flow fan 140 is constant, so that all of the sorting wind blown from the Karatsu 132 is traversed. The sorting unit 130 cannot be sucked by the fan 140, and the flow of the sorting wind from the front to the rear changes in the sorting unit 130, causing convection, etc., and soot and dust cannot be sucked and removed. The sorting efficiency of was getting worse.

  Therefore, the present invention has a suction wind speed of the cross flow fan 140 on the suction side of the sorting air, in addition to the configuration of the karasu 132 that makes it possible to adjust the blowing amount according to the amount of the mixture leaked to the sorting unit 130 as described above. (Suction air volume) is also adjustable.

  First, as shown in FIGS. 4 and 8, the cross flow fan 140 is disposed at the rear end of the sorting unit 130 and inside the sorting waste outlet 200 at the rear of the machine body. This cross flow fan 140 has a horizontally long shape in the left-right direction, and is installed with the rotating shaft 204 mounted on the left and right side walls 205. A plurality of wind generating plates 206 are provided on the outer peripheral surface of the cross flow fan 140 substantially in parallel in the left-right direction.

  Further, as shown in FIG. 9, the cross flow fan 140 is also provided above the cross flow fan 140 so as to cover the cross flow fan 140 from above, and also below the rear portion of the cross flow fan 140. The lower fan casing 202 is fixed with the left and right ends attached to the left and right side walls 205, respectively.

  The lower fan casing 202 also serves as a shielding plate. The lower fan casing 202 is caused to collide with the lower fan casing 202 by causing the mixture containing the grains scattered by the sorting unit 130 to the lower side of the rear cross flow fan 140 by the sorting wind. It is guided into the dynamic sorting device 131.

  Next, in front of the lower fan casing 202, a tongue 203 having a width substantially equal to the lateral width of the cross flow fan 140 is connected to the lower fan casing 202 so as to cover the cross flow fan 140 from below. Prepared. The tongue 203 has a gently convex arc shape upward, and has a front and rear length as appropriate so that its front end is located near the center of the crossflow fan 140.

  Further, as shown in FIGS. 10 to 11, the tongue portion 203 is in the vicinity of the rear end portion of the tongue portion 203, and includes a rotation fulcrum shaft 207 in the vicinity of the connection portion with the lower fan casing 202. The shaft 207 is mounted on the left and right side walls 205 so that the front portion of the tongue 203 can be rotated in the vertical direction of the machine body. The position of the rotation fulcrum shaft 207 is not limited to the illustrated position.

  One end of an arm 208 is attached to the rotation fulcrum shaft 207, and one end of a wire 209 as a link member is attached to a hole provided in the other end of the arm 208. The other end of the wire 209 is connected to an arm 219 of the red shutter 216 as shown in FIG. Note that the connection destination of the other end of the wire 209 is not limited to the above, and may be connected to, for example, the main body portion of the red-hot shutter 216 or the middle portion of the arm 219.

  Here, when the cereals harvested by the harvesting unit 7 are conveyed to the threshing unit 4 and the mixture containing the grains threshed by the threshing unit 4 leaks to the sorting unit 130, the amount of the mixture as described above If there is a large amount, the controller c activates the motor 221 based on the detection information that the mixture amount detection means 215 detects that the selection air volume is small at the installation position, and the front end of the arm 219 is connected via the wire 220. By rotating upward, the red pepper shutter 216 rotates about the support shaft 218 in the clockwise direction when viewed from the left side, and the red pepper shutter 216 is opened at an appropriate angle to increase the air flow rate of the sorting wind in the red pepper 132. .

  At this time, for example, when the wire 209 is slid rearward along with the upward rotation of the front end portion of the arm 219 in the red shutter 216, the rear end portion of the arm 208 in the tongue 203 is moved counterclockwise upward. , The front portion of the tongue 203 is rotated counterclockwise toward the position b about the rotation fulcrum shaft 207 and the tongue 203 is opened.

  As a result, the clearance area A between the bottom portion of the cross flow fan 140 and the tongue 203 is expanded, so that the suction air speed of the cross flow fan 140 is increased by the expansion of the suction area of the selection air in the vicinity of the cross flow fan 140. Rises. The tongue 203 is detected between the closed position “a” and the fully opened position “b” through the rotation of the arm 219 and the sliding of the wire 209 according to the detection information of the mixture amount detection means 215. It can be opened at an angle according to the grain amount. Therefore, the crossflow fan 140 has the maximum suction air speed by rotating the tongue 203 to the position b.

  In addition, since the tongue portion 203 has a gently convex arc shape upward, a part of the sorting wind sucked between the cross flow fan 140 and the tongue portion 203 by the cross flow fan 140 is the tongue portion. It flows along a circular arc shape 203 and is discharged out of the machine behind the crossflow fan 140.

  For this reason, the sorting wind collides with the tongue portion 203 having a linear shape as in the conventional case and reflects toward the cross-flow fan 140, so that the sorting wind closes the suction air path and reduces the suction wind speed. Do not let it interfere with the suction. In particular, when the tongue 203 as described above is opened and the suction wind speed is increased (even when the tongue 203 is closed), most of the sorting winds that collided with the tongue 203 vigorously along the tongue 203. Since it flows and is discharged out of the machine, the suction air speed can be improved and maintained.

  With such a configuration, when the Karatsu shutter 216 is opened to increase the air flow rate of the Karatsu 132 as the grain amount of the sorting unit 130 increases, the tongue 203 is rotated in conjunction with the rotation of the Karatsu shutter 216. Since the suction air speed of the cross flow fan 140 can be increased, the sorting air blown by the red pepper 132 can be sucked more by the cross flow fan 140 and is sorted in the sorting unit 130 from the front to the rear. The flow of wind can be maintained to prevent the occurrence of convection, and the dust and dust can be reliably sucked and removed, so that the sorting efficiency of the sorting unit 130 can be improved.

  Contrary to the above, when the amount of the mixture leaked to the sorting unit 130 as described above is small, the mixture amount detection means 215 is based on the detection information detected that the sorting air volume is large at the installation position. The controller c operates the motor 221 to rotate the front end portion of the arm 219 downward via the wire 220, so that the rear portion of the Kara shutter 216 rotates counterclockwise as viewed from the left side about the support shaft 218. Then, the red pepper shutter 216 is rotated in the closing direction to reduce the air flow of the sorting air in the red pepper 132.

  At this time, for example, when the wire 209 is slid forward along with the downward rotation of the front end of the arm 219 in the red shutter 216, the rear end of the arm 208 in the tongue 203 is moved downward clockwise. By rotating, the front portion of the tongue 203 is rotated clockwise around the rotation fulcrum shaft 207 toward the position a in the upper direction of the machine body, and the tongue 203 is closed.

  As a result, the clearance area A between the bottom of the cross flow fan 140 and the tongue 203 is reduced, so that the suction air speed of the cross flow fan 140 is reduced by reducing the suction area of the selection air in the vicinity of the cross flow fan 140. Decreases. For this reason, while the amount of the mixture in the sorting unit 130 is small, the sorting air volume from the red pepper 132 blown backward is reduced, and the suction air volume of the sorting air by the cross flow fan 140 is reduced, so that the third loss, etc. Can be reliably prevented.

  The opening / closing angle of the tongue 203 can be set to an angle corresponding to the amount of the mixture that leaks to the sorting unit 130. That is, the opening / closing of the tongue shutter 216 and the tongue 203 is determined by determining the rotation angle of the arm 208 of the tongue 203 according to the sliding amount of the wire 209 according to the rotation angle of the arm 219 of the tongue shutter 216. The angle may be proportional. In this case, the position c of the tongue shutter 216, the position a of the tongue 203, the position b of the tongue shutter 216, and the position d of the tongue 203 correspond to each other.

  Further, the rotation method of the tongue 203 linked to the opening and closing of the Karatsu shutter 216 is not limited to the sliding of the wire 209 connected between the arms 208 and 219. For example, as shown in FIG. A wire 209 attached to 203 may be connected to the motor 221.

  In this case, as described above, the controller c operates the motor 221 to slide the wire 220 and open / close the red shutter 216 according to the amount of mixture leaked to the sorting unit 130 based on the detection information of the mixture amount detecting means 215. However, at this time, the controller c can also obtain the same effect as described above by sliding the wire 209 via the motor 221 and opening and closing the tongue 203 simultaneously with the opening and closing of the red shutter 216. In addition, by making the sliding amount of the wire 209 correspond to the sliding amount of the wire 220 according to the grain amount by the mixture amount detecting means 215, the opening / closing angle of the red pepper shutter 216 and the opening / closing angle of the tongue 203 are made proportional. May be adjusted.

  As yet another example, the tongue 203 may be opened and closed by a separately installed motor 222 as a link member without using the wire 209. FIG. 14 is a perspective view of the cross-flow fan as seen from the rear, showing the motor installed in the vicinity of the rotation fulcrum shaft of the tongue. In this case, as shown in FIG. 14, the motor 222 is installed on the outer side surface of the left side wall 205 (the outer side surface of the right side wall 205 or both right and left sides), and the motor shaft (not shown) of the motor 222 is rotated by the tongue 203. The fulcrum shaft 207 is connected. The motor 222 is connected to the controller c.

  With such a configuration, as described above, the controller c operates the motor 221 to slide the wire 220 according to the amount of mixture leaked to the sorting unit 130 based on the detection information of the mixture amount detection means 215, and the red shutter. At this time, the controller c also operates the motor 222 to rotate the rotation fulcrum shaft 207 clockwise or counterclockwise via the motor shaft, thereby moving the tongue 203 to the red shutter. At the same time as opening / closing 216 and according to the opening / closing angle of the Kara shutter 216, the same effect as described above can be obtained.

  As described above, the tongue 203 is opened and closed in conjunction with the opening and closing of the Karatsu shutter 216. However, the present invention is not limited to this, and the detection information of the mixture amount detecting means 215 is used. The controller c may open and close only the tongue 203 by operating the motor 221 and the wire 209 or directly the motor 222 according to the amount of the mixture leaked to the sorting unit 130 based on it. This is effective in cases where it is not possible to adjust the air volume of the red pepper 132, or when it is desired to wind the mixture while keeping the air volume of the red pepper 132 constant, and the same effects as described above can be obtained.

  As described above in detail, the combine 1 of this example includes a harvesting unit 7 that harvests cereals, a threshing unit 4 that threshs cereals harvested by the harvesting unit 7, and a grain that has been threshed by the threshing unit 4. A sorting unit 130 for sorting, and the sorting unit 130 is arranged at the front of the sorting unit 130, and includes a mixture containing grains that fall from the flown cereal plate 135 through the chaff sheave 138 and the grain sheave 137. Tang Dynasty 132 for supplying the selected wind for sorting the first and second winds according to the amount of the mixture based on the detection information by the mixture amount detecting means 215 and the rear of the Karatsu 132 And the rear portion of the sorting unit 130 is covered with the fan casings 201 and 202, and the front portion of the lower rear fan casing 202 is covered with the tongue 203. In combine and a cross flow fan 140 for sucking the sorted wind from 2, tongues 203, depending on the amount of mixture is detected by the detection means 215, in which provided openably.

  In addition, the tongue 203 opens and closes in conjunction with the opening and closing of the shutter 216 of the red pepper 132 based on the amount of mixture detected by the detecting means 215, and the tongue 203 and the red pepper shutter 216 are connected to the wire 209 or the motor 222 (link). Link).

  The mounting position of the arm 219 to the support shaft 218 of the red shutter 216, the mounting position of the arm 208 of the rotation fulcrum shaft 207 of the tongue 203, and the mounting position of the wires 209 and 220 to the arms 208 and 219, respectively. Are not limited to the positions described above.

  As described above, the tongue 203 ′ is provided below the cross flow fan 140 disposed inside the sorting waste discharge port 200 and is provided in the full width of the cross flow fan 140. It can also be provided over the entire width of the threshing section 4 (the swing sorting device 131) at the rear of the machine body. FIG. 15 is a perspective view of the rear part of the fuselage showing the cross-flow fan provided over the entire width of the fuselage as viewed from the left rear, and FIG. FIG. By adopting such a configuration, the suction width of the sorting air (the left-right direction of the machine body) is long, the dust suction efficiency is increased, and the maintenance of the cross flow fan 140 can be facilitated.

It is a right view of the self-desorption type combine as an example of the present invention. It is a left-side block diagram of a self-removing combine. It is a side view of a cereal conveyance device. It is a left side schematic diagram of a threshing part and a selection part. It is a schematic diagram which shows the power transmission path | route from an engine to a discharge auger. FIG. 6 is a schematic diagram of the left side of Kara. FIG. 5 is a linkage diagram of a red pepper and a mixture amount detection means. It is a perspective view of a cross flow fan seen from back. It is a left side schematic diagram of a cross flow fan and a cross flow fan periphery. It is a left side schematic diagram under a cross flow fan which expanded and showed a tongue part. It is a left side schematic diagram under the crossflow fan which shows rotation of a tongue part. It is a linkage figure of a Kara shutter and a tongue part. FIG. 5 is a linkage diagram of a tongue shutter and a tongue shutter in which a wire of the tongue is connected to a motor. It is a perspective view of the crossflow fan seen from the back which shows the motor installed in the rotation fulcrum axis | shaft vicinity of a tongue part. It is the perspective view which looked at the rear part of the airframe which shows the crossflow fan provided over the full body width from the left rear. It is the perspective view which looked at the rear part of the airframe which shows the crossflow fan provided over the full body width from the right rear.

Explanation of symbols

DESCRIPTION OF SYMBOLS 130 Sorting part 132 Kara 140 Cross flow fan 203 Tongue part 207 Rotating fulcrum shaft 208, 219 Arm 209, 220 Wire 215 Detection means 216 Kara shutter 218 Support shaft 221, 222 Motor A Clearance area C Controllers a, b, c, d position

Claims (3)

A reaping part for reaping the cereals, a threshing part for threshing the cereals harvested by the reaping part, and a sorting part for selecting the grains threshed by the threshing part,
The sorting unit is arranged to wind-sort the mixture containing the grains falling through the chaff sheave and the Glen sheave from the cereal plate placed at the front part of the sorting unit into the first and second items. Karin, which supplies the selected air by adjusting the air volume according to the amount of the mixture based on the detection information by the means for detecting the amount of the mixture,
Sorting from the Karatsu, which is located behind the Karatsu, arranged at the rear of the sorting section, and the upper and lower rear are covered with a fan casing, and the front of the lower rear fan casing is covered with a tongue. In a combine comprising a cross-flow fan for sucking wind,
The combine is characterized in that the tongue is provided so as to be freely opened and closed according to the amount of the mixture detected by the detecting means.   The combine according to claim 1, wherein the tongue part opens and closes in conjunction with the shutter opening and closing of the red pepper based on the amount of the mixture detected by the detection means.   The combine according to claim 1, wherein the tongue and the red shutter are linked by a link member.

Images