JP2011072288A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of decreasing labor for maintenance of a regulator by making dirt and dust hardly accumulating on the regulator for regulating opening of the chaff sieve and air flow of a winnowing fan. <P>SOLUTION: A combine harvester 1 having a threshing unit 4 threshing reaped grain culm, and a separating unit 5 separating, through a swinging separating device 50 and a winnowing fan 51, the threashed products threshed in the threshing unit 4, includes: an air flow regulator 13 changing air flow of the separating air generated by the winnowing fan 51; an opening adjuster 14 changing the opening of a chaff sieve 56 of the swinging separating device 50; and a case receiving the winnowing fan 51 and having a suction hole 91b through which the air sucked by the winnowing fan 51 flows, wherein the air flow regulator 13 and the opening adjuster 14 are disposed at the vicinity of the suction hole 91b of the winnowing fan 51. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a combine, and more particularly, to a sorting unit having a swing sorting device including a chaff sheave and a red fan.

Conventionally, the selection unit is equipped with a swing sorting device including chaff sheave and a red pepper fan, and the opening of the chaff sheave and the air volume of the red pepper fan can be adjusted according to the amount of waste after threshing and the amount of processed material after threshing. Combines are known.
For example, in the technique shown in Patent Document 1, a sensor that detects the amount of scouring after threshing is provided on the squeezing guide bar of the scouring processing unit (staining processing device), and according to the squeezing amount detected by the sensor. , By driving a control motor provided on the outside of the sorting unit, thereby rotating the fins via fan-shaped gears, wires, etc., and adjusting the opening of the chaff sheave, and the size of the inlet of the tang fan The airflow of the tang fan is adjusted by rotating the shutter for changing the air flow.

Japanese Patent No. 2761477

  In the technique shown in Patent Document 1, the opening degree adjusting device and the air volume adjusting device including the control motor and the fan-shaped gear are arranged near the rear side of the chaff sheave in the selection unit. For this reason, the opening degree adjusting device and the air volume adjusting device are located in a place where the air flow is unlikely to occur, and dust and the like are easily deposited on the opening degree adjusting device and the air volume adjusting device. Therefore, there is a problem that it takes time to maintain the opening degree adjusting device and the air volume adjusting device.

  The present invention has been made in view of the problems as described above, and makes it difficult to accumulate dust and dust on the adjusting device for adjusting the opening of the chaff sheave and the air volume of the tang fan. An object of the present invention is to provide a combine that can reduce the above.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  In Claim 1, the threshing part which carries out the threshing process of the harvested cereal rice cake, and the selection part which sorts the processed material threshed in this threshing part with the swinging sorter and the sorting wind by the Kara fan are provided. In the combine, the air volume adjusting device for changing the air volume of the sorting air by the tang fan, the opening adjusting device for changing the opening degree of the chaff sheave of the swing sorting device, and the tang fan are accommodated and sucked into the tang fan. The air volume adjusting device and the opening degree adjusting device are arranged in the vicinity of the suction port of the tang fan.

  In Claim 2, the threshing part which carries out the threshing process of the harvested corn straw, and the selection part which sorts the processed material threshed in this threshing part by the swinging sorter and the sorting wind by the Kara fan are provided. In the combine, the air volume adjusting device for changing the air volume of the sorting air by the tang fan, the opening adjusting device for changing the opening degree of the chaff sheave of the swing sorting device, and the tang fan are accommodated and sucked into the tang fan. And a case having a suction port through which air is circulated, wherein the suction port is formed in a side plate of the case, and one of the air volume adjusting device and the opening degree adjusting device is the side plate of the case. The outside is disposed above the suction port, and the other of the air volume control device and the opening degree control device is disposed outside the side plate of the case and behind the suction port. That.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, dust and the like are easily affected by the flow of wind generated by the driving of the tang fan in the vicinity of the air volume adjusting device and the opening adjusting device. Accordingly, dust or the like is hardly accumulated on the air volume adjusting device and the opening degree adjusting device, and the maintenance work of the air volume adjusting device and the opening degree adjusting device can be reduced.

  According to the second aspect of the present invention, dust and the like are easily affected by the flow of wind generated by the driving of the tang fan in the vicinity of the air volume adjusting device and the opening adjusting device. Accordingly, dust or the like is hardly accumulated on the air volume adjusting device and the opening degree adjusting device, and the maintenance work of the air volume adjusting device and the opening degree adjusting device can be reduced.

The side view which shows the whole structure of a combine. The top view which shows the whole structure of a combine. Side surface sectional drawing which shows the structure of a threshing part and a selection part. The side view which shows the structure of a feed chain. The figure which shows the structure of a power transmission mechanism. The side view which shows the structure of the transmission mechanism for a selection drive. The figure which shows the structure of the Kara fan vicinity. The figure which shows the structure of an air volume adjustment apparatus. (A) The figure in case air volume becomes large. (B) The figure in case air volume becomes small. The perspective view which shows the structure of a rocking sorter. The figure which shows the structure of an opening degree adjusting device. (A) The figure in case an opening degree becomes small. (B) The figure in case an opening degree becomes large. The block diagram which changes the air volume of the Chinese fan and the opening of the chaff sheave. The side view which shows the structure of a waste amount detection apparatus. The side view which shows the structure of a processed material amount detection apparatus. The side view which shows the structure of a setting operation tool. The side view which shows the transmission mechanism for sorting drive when the feed chain is not opened. The side view which shows the transmission mechanism for selection drive in the case of opening the feed chain. The figure which shows the structure of a side cover. (A) Side view. (B) Front view. (C) Perspective view.

  Hereinafter, embodiments of the present invention will be described in detail.

  First, the whole structure of the combine 1 which concerns on one Embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 2, the combine 1 includes a traveling unit 2, a cutting unit 3, a threshing unit 4, a sorting unit 5, a grain storage unit 6, a waste disposal unit 7, a steering unit 8, an engine 22, and the like. Is provided.

  The traveling unit 2 is provided at the lower part of the body frame 9. The traveling unit 2 includes a crawler traveling device 21 having a pair of left and right crawlers, and the like, and is configured to be able to travel the aircraft in the forward or backward direction by the crawler traveling device 21.

  The cutting unit 3 is provided at the front end of the body frame 9 so as to be movable up and down with respect to the body. The mowing unit 3 includes a weeding tool 31, a pulling device 32, a cutting device 33, a transporting device 34, and the like, and uses the weeding tool 31 to weed the cereals in the field, and the cereals after weeding. Is caused by the pulling device 32, the stocker of the culm after ripening is cut by the cutting device 33, and the chopped culm can be transported to the threshing unit 4 side by the transport device 34.

  The threshing part 4 is provided at the left front part of the machine body frame 9 and is arranged behind the reaping part 3. The threshing unit 4 includes a feed chain 41, a handling cylinder 43, a processing cylinder 45, and the like (see FIG. 3). The threshing part 4 is inherited by the feed chain 41 and rejected. It conveys to the process part 7 side, threshing the cereal grain in conveyance with the handling cylinder 43, and the untreated thing from the handling cylinder 43 side is processed with the processing cylinder 45. FIG.

  The sorting unit 5 is provided on the left side of the machine body frame 9 and is disposed below the threshing unit 4. The sorting unit 5 includes a rocking sorting device 50, a wind sorting device, a grain transporting device, and the like (see FIG. 3). Then, after the rocking sorting is performed, the wind sorting device wind-sorts and the swarf and dust are discharged to the outside by the swarf discharging device, while the grain is transported to the grain storage unit 6 by the grain transporting device. Configured to be able to.

  The grain storage part 6 is provided in the right rear part of the body frame 9, and is arrange | positioned at the right side of the threshing part 4 and the selection part 5. FIG. The grain storage unit 6 includes a grain tank 61, a grain discharge device 62, and the like. The grain transported from the sorting unit 5 is stored in the grain tank 61, and when the grain tank 61 becomes full, the grain is stored. The grain is discharged by the grain discharging device 62. The grain discharging device 62 is configured to discharge in any direction.

  The waste disposal unit 7 is provided at the left rear portion of the machine body frame 9 and is disposed behind the threshing unit 4. The waste processing unit 7 has a waste transporting device 71, a waste cutting device 72, and the like, and uses the waste that has been threshed from the threshing unit 4 as waste and inherits the waste by the waste transporting device 71. It is configured to be discharged to the outside or conveyed to the waste cutting device 72 and cut by the waste cutting device 72 and then discharged to the outside.

  The control unit 8 is provided at the right front portion of the machine body frame 9 and is disposed on the right side of the conveying device 34 of the cutting unit 3 and in front of the grain storage unit 6. The control unit 8 includes a control seat 81, a steering handle 82, a cabin 83, an operation panel, and the like. The control seat 81, the steering handle 82, the operation panel, and the like are covered with the cabin 83, and the operator is seated on the control seat 81. Thus, it is configured such that the operator can operate the devices of the respective parts by means of operation levers and operation switches arranged on the steering handle 82 and the operation panel.

  In this way, the combine 1 transmits the motive power of the engine 22 to the devices of the respective parts by operating the operation tools in the control unit 8, and causes the traveling unit 2 to travel the vehicle body while the harvesting unit 3 performs the field operation. The threshing part 4 is reaped, the threshing part 4 threshs the cereals from the reaping part 3, the sorting part 5 sorts the processed product from the threshing part 4, and the grain storage part 6 sorts the grain from the sorting part 5 At the same time, the waste processing unit 7 can discharge the waste from the threshing unit 4 to the outside.

  Next, the structure of the threshing part 4 and the selection part 5 is demonstrated.

  As shown in FIG. 3, the threshing unit 4 includes a feed chain 41, a handling cylinder 43, a processing cylinder 45, and the like. The sorting unit 5 includes a swing sorting device 50, a wind sorting device, a grain transport device, and the like.

  In the threshing unit 4, the handling cylinder 43 is formed in a cylindrical shape with a chamfered front end, and is arranged in the handling chamber 42 with the axial direction as the front-rear direction. The handling cylinder 43 is attached to a rotating spindle that is rotatably supported between the front wall and the rear wall in the handling chamber 42, and the rotation from the engine 22 is transmitted to the rotating spindle by the rotation of the handling cylinder 43. It is rotationally driven integrally with the support shaft around its longitudinal axis. A receiving net 44 is disposed below the handling cylinder 43 so as to cover the lower half of the handling cylinder 43.

  The processing cylinder 45 is formed in a cylindrical shape, is parallel to the handling cylinder 43 with the axial direction as the front-rear direction, and is disposed in the processing chamber 46 on the right rear side. The processing chamber 46 communicates with the handling chamber 42 through a dust feed port provided on the left side of the front portion. The processing cylinder 45 is supported by a support shaft that is rotatably mounted in the process chamber 46 in the front-rear direction, and the power from the engine 22 is transmitted to the support shaft so that the front and rear of the process drum 45 are integrated with the support shaft. It is driven to rotate around the direction axis. A processing cylinder net is arranged below the processing cylinder 45.

  As shown in FIGS. 1, 3, and 4, the feed chain 41 is disposed on the left side of the handling cylinder 43 and between the cutting unit 3 and the waste disposal unit 7. The feed chain 41 is wound around a drive sprocket 16a and two driven sprockets 16b and 16b provided on the support frame 16 on the left side of the handling cylinder 43, and power from the engine 22 is transmitted to the drive sprocket 16a. It is driven by rotation.

  Here, the support frame 16 of the feed chain 41 includes a horizontal frame 16c extending horizontally in the front-rear direction, a reinforcing frame 16d curved from the rear portion of the horizontal frame 16c toward the rear upper side, and a front end portion of the horizontal frame 16c. And an oblique frame 16e inclined in a front, rear, and rear high state that connects the upper portion of the reinforcing frame 16d and is formed in a substantially right triangle shape in a side view.

  The rotation fulcrum frame 16f is formed in a substantially U shape in a side view, and one end thereof is connected to the upper end of the reinforcing frame 16d, and the other end is connected to the rear end of the horizontal frame 16c. The pivot fulcrum frame 16f is supported at the rear part of the machine body so as to be pivotable laterally. Further, two support rods 16g and 16g for fixing to the side cover 15 described later are connected to the middle part of the horizontal frame 16c so as to protrude downward.

  The drive sprocket 16 a is provided at the front end of the support frame 16, and the driven sprockets 16 b and 16 b are provided at the front and rear ends of the support frame 16. Then, the feed chain 41 is wound around the drive sprocket 16a and the driven sprocket 16b as described above.

  As a result, the feed chain 41 is supported by the support frame 16 via the drive sprocket 16a and the driven sprockets 16b and 16b, and can rotate about the rotation fulcrum frame 16f together with the support frame 16. That is, the feed chain 41 can be moved in the direction of the arrow A1 in FIG. However, the rotation fulcrum of the support frame 16 may be provided on the front side instead of being provided on the rear side as described above.

  The support frame 16 can be held in a closed position in which the feed chain 41 faces the handling cylinder 43 and closes the handling chamber 42 from the left side by a holding mechanism provided at the front thereof. Further, when the support frame 16 is not held by the holding mechanism, the support frame 16 is rotated around the rotation fulcrum frame 16 f from the closed position toward the left side, and the feed chain 41 is separated from the handling cylinder 43 so as to open the handling chamber 42. It is possible to move to an open position that opens from the left side.

  As shown in FIG. 3, in the sorting unit 5, the swing sorting device 50 includes a swing sorting device main body 50 a, a front feed pan 54, a rear feed pan 55, a chaff sheave 56, a grain sheave 57, and a stroll back 58.

  The swing sorting device main body 50 a is formed in a rectangular frame shape in plan view of the sorting unit 5. The swing sorting apparatus main body 50a is disposed below the handling cylinder 43 and the receiving net 44 and the processing cylinder 45 and the processing cylinder net of the threshing portion 4 with the longitudinal direction as the front-rear direction, and left and right provided on the machine frame 9 The lower machine casing 91, 91 is supported so as to be swingable and detachable. The swing sorting device main body 50a is swung with respect to the left and right lower machine casings 91 and 91 when power from the engine 22 is transmitted to the swing shaft of the swing mechanism.

  The feed pan includes a front feed pan 54 and a rear feed pan 55. The front feed pan 54 is disposed below the handling cylinder 43 and the receiving net 44 of the threshing unit 4 at the front part in the swing sorting device main body 50a. The rear feed pan 55 is disposed at a front portion in the swing sorter main body 50a and below the front feed pan 54 at a predetermined interval from the front feed pan 54.

  The chaff sheave 56 is provided in the middle part of the swing sorting apparatus main body 50a, below the handling cylinder 43 and the receiving net 44 of the threshing part 4, and below the processing cylinder 45 and the processing cylinder net, It is arranged behind the feed pan 54.

  The Glen sheave 57 is provided in the front and rear halfway portion within the swing sorting device main body 50 a and is disposed below the chaff sheave 56. The Strollac 58 is provided at the rear part in the swing sorting device main body 50 a and is arranged behind the chaff sheave 56 and behind the Glen sheave 57.

  The wind sorting device is provided with a tang fan 51, a suction fan 59, a prefan 52, and a second fan 53. Here, the tang fan 51, the pre-fan 52, and the second fan 53 are arranged on the left and right inner sides of the lower machine casings 91 and 91 below the swing sorting device 50, and the suction fan 59 is placed on the swing sorting device 50. Above and to the left and right inside of the left and right upper machine casings 92. And with respect to these fans 51, 59, 52 and 53, the swing sorting device 50 can slide in the front-rear direction along the left and right lower machine casings 91 and 91.

  The tang fan 51 is horizontally installed in front of the left and right lower machine casings 91 and 91 and is arranged below the front feed pan 54. The suction fan 59 is horizontally disposed above the rear end portions of the left and right upper machine casings 92, 92 disposed above the lower machine casing 91, and is disposed above the stroller 58. The tang fan 51 and the suction fan 59 are configured to rotate when the power from the engine 22 is transmitted to the rotation shafts 51a and 59a to generate the sorting wind.

  The prefan 52 is laterally arranged in the left-right direction near the front end portions of the left and right lower machine casings 91, 91, and is disposed below the front portion of the front feed pan 54 and above the front side of the tang fan 51. The second fan 53 is horizontally installed in the left and right bottom portions of the left and right lower machine casings 91 and 91 and is disposed between the first transport device 151 and the second transport device 152 of a grain transport device described later. Is done. The prefan 52 and the second fan 53 are configured to rotate when power from the engine 22 is transmitted to the rotation shafts 52a and 53a, and generate a selection wind.

  The grain transport device includes a first transport device 151, a second transport device 152, a first cerealing device 155, and a second reduction device 156. The first transport device 151 is horizontally installed at the bottom of the left and right lower machine casings 91 and 91, and is disposed behind the tang fan 51 and below the chaff sheave 56 and the grain sheave 57. The second transport device 152 is horizontally installed at the bottom of the left and right lower machine casings 91, 91 and is disposed behind the first transport device 151 and the second fan 53 and below the stroller 58.

  The first cerealing device 155 is erected vertically on the outer side of the lower machine casing 91 on the right side, is connected to the right end of the first conveying device 151, and is connected to the grain tank 61 of the grain storage unit 6 (FIG. 1). Connected). The second reduction device 156 is obliquely installed in the front-rear direction outside the lower machine casing 91 on the right side, is connected to the right end portion of the second conveyance device 152, and the handling chamber 42 of the threshing unit 4 or the swing sorting device 50. Connected to the space above.

  In such a configuration, when the threshing operation and the sorting operation are performed, in the threshing unit 4, the cereal from the reaping unit 3 is inherited by the feed chain 41 at its stock and is transported to the side of the waste disposal processing unit 7. . The tip part of the grain culm being transported is threshed by the handling cylinder 43, and the processed product containing the grains, swarf and dust falls to the sorting part 5 and is sorted by the receiving net 44. The unprocessed material that has not been threshed by the handling cylinder 43 is conveyed from the handling chamber 42 to the processing chamber 46 through the dust feed port, processed by the processing cylinder 45, and the processed product falls into the sorting unit 5. Sorted by processing cylinder.

  In the sorting unit 5, the layer of the processed material dropped from the receiving net 44 of the threshing unit 4 is leveled by the front and rear feed pans 54 and 55 in a state where the swing sorting device body 50 a is swung by the swing mechanism. Thus, the processed material is sorted by specific gravity. The product after sorting by the front feed pan 54 is roughly sorted by the chaff sheave 56. The product after sorting by the rear feed pan 55 is sorted by the Glen sieve 57. Further, the processed material dropped from the receiving net 44 and the processing drum net of the threshing unit 4 is roughly sorted by the chaff sheave 56. After being sorted by the chaff sheave 56, it is precisely sorted by the grain sieve 57 and the sorting wind from the tang fan 51 and prefan 52.

  Grains, swarf, and the like falling from the chaff sheave 56 and the Glen sheave 57 are finely sorted by the sorting wind from the Kara fan 51 and the prefan 52. At this time, the grains having a large specific gravity fall as the first thing against the sorting wind and are accommodated in the first transport device 151. The lighter specific gravity is lighter than the second conveying device 152 by the sorting air from the hot fan 51 and the pre-fan 52, and further by the sorting air from the second fan 53.

  Among these skipped ones, relatively heavy ones, for example, grain with a branch infarction, fall as a second item and are accommodated in the second conveying device 152. Those except for this are further blown toward the Strollac 58 by the sorting air from the Kara fan 51, the pre-fan 52, and the second fan 53. Of these, the sawdust is loosened by the Strollac 58. The grain in the sawdust falls as a second object and is accommodated in the second conveying device 152. Other dust and the like are sucked by the suction fan 59 and discharged to the outside through the third port.

  The first thing is conveyed to the first cerealing device 155 by the first conveying device 151, and then conveyed to the Glen tank 61 of the grain storage unit 6 by the first cerealing device 155 and temporarily stored in the Glen tank 61. Is stored. The second product is conveyed to the second reduction device 156 by the second conveyance device 152, and then conveyed to the upper space of the handling chamber 42 of the threshing unit 4 or the swing sorting device 50 by the second reduction device 156, and after threshing Or it is re-sorted by the rocking sorter 50 without threshing.

  Next, the structure of the power transmission mechanism from the engine 22 to each part will be described.

  As shown in FIG. 5, in the power transmission mechanism, the output shaft 22a of the engine 22 is connected to the drive shaft 21a of the crawler type traveling device 21 of the traveling unit 2 via the transmission 23, and the power of the engine 22 is crawled. Is transmitted to the traveling device 21. Further, the other output shaft of the engine 22 is connected to the input shaft of the grain discharging device 62 of the grain storage unit 6 via a transmission mechanism, and the power of the engine 22 is transmitted to the grain discharging device 62.

  The output shaft 22a of the engine 22 is connected to the input shaft 24a of the counter case 24 via a belt tension clutch type threshing clutch 22b, and the power of the engine 22 is transmitted to the input shaft 24a of the counter case 24. Further, the output shaft 23 a of the transmission 23 is connected to the input shaft 24 b of the counter case 24 via a transmission mechanism, and the power of the engine 22 that has been shifted by the transmission 23 is transmitted to the input shaft 24 b of the counter case 24. .

  The counter case 24 transmits the power of the engine 22 to each device of the cutting unit 3, the threshing unit 4, and the sorting unit 5. The counter case 24 includes the above-described input shafts 24a and 24b, output shafts 24c, 24d, 24e, and 24f, a cutting speed change mechanism 24g, a planetary gear mechanism 24i, and the like.

  The output shaft 24c is connected to the input shaft 24a via a transmission mechanism such as a bevel gear, and the power transmitted to the input shaft 24a is transmitted to the output shaft 24c. The output shaft 24 c is connected to the drive shaft of the handling cylinder 43 of the threshing unit 4 via a transmission mechanism, and the power transmitted to the input shaft 24 a is transmitted to the handling cylinder 43. The drive shaft of the handling cylinder 43 is connected to the input shaft of the waste transporting device 71 of the waste processing unit 7 via a transmission mechanism, and the power of the engine 22 transmitted to the input shaft 24a is transmitted to the waste transporting device 71. Is done.

  The output shaft 24d is connected to the input shaft 24a or the input shaft 24b via a transmission mechanism including the cutting transmission mechanism 24g, and the power transmitted to the input shaft 24a or the input shaft 24b is transmitted to the output shaft 24d. The switching of the connection between the input shafts 24a and 24b is performed by operating the cutting transmission mechanism 24g with an operation lever or the like. The output shaft 24 d is connected to the cutting input shaft 3 a of the cutting unit 3 through a transmission mechanism, and the power of the engine 22 is transmitted to each device such as the transport device 34 in the cutting unit 3.

  The output shaft 24e is connected to the input shaft 24a and the input shaft 24b via a transmission mechanism including a planetary gear mechanism 24i and a feed chain clutch 24j. In the planetary gear mechanism 24i, the power transmitted from the input shaft 24a and the power transmitted from the input shaft 24b are combined, and the combined power is output to the output shaft 24e. The sprocket of the feed chain 41 is attached to the output shaft 24e, and the power of the engine 22 is transmitted to the feed chain 41.

  The output shaft 24f is connected to the input shaft 24a via a transmission mechanism, and the power transmitted to the input shaft 24a is transmitted to the output shaft 24f. The output shaft 24f is a wind sorting device including a swing sorting device 50, a red pepper fan 51, a pre-fan 52, and a second fan 53, a grain transport device including a first transport device 151 and a second transport device 152, and a waste disposal process. The power is transmitted to each device of the sorting unit 5 by being connected to the input shaft of each device of the waste cutting device 72 of the unit 7 via a sorting drive transmission mechanism 100 described later.

  As shown in FIG. 3 and FIG. 6, the sorting drive transmission mechanism 100 sends the power transmitted from the counter case 24 to the sorting unit 5, more specifically, the tang fan 51, the prefan 52, the second fan 53, It is comprised so that it may transmit to the suction fan 59 and the grain conveying apparatus etc. which contain the 1st conveying apparatus 151 and the 2nd conveying apparatus 152. FIG. The transmission mechanism for sorting drive 100 is arranged on one side of the sorting unit 5, in the present embodiment on the left outer side, specifically, of the left and right side plates in the lower machine casing 91 that supports the swing sorting device 50 and the like. It arrange | positions under the feed chain 41 of the threshing part 4 while arrange | positioning on the outer side of the left side board 91a.

  The sorting drive transmission mechanism 100 includes a first input pulley 101A, a second input pulley 101B, a red fan pulley 102, a prefan pulley 103, a first transport pulley 104, a second fan pulley 105, a second transport pulley 106, and a suction fan pulley. 107, a swing pulley 108, a plurality of belts, an air volume adjusting device 13, and an opening degree adjusting device 14.

  The first input pulley 101 </ b> A and the second input pulley 101 </ b> B are arranged near the front of the sorting unit 5 and on the left side of the counter case 24. The first input pulley 101A and the second input pulley 101B are arranged side by side so that the first input pulley 101A is located on the left side of the second input pulley 101B, and both protrude from the counter case 24 toward the left side. The output shaft 24f is fixed.

  The tang fan fan pulley 102 is arranged behind the second input pulley 101B and on the left side of the tang fan 51. The tang fan fan pulley 102 is fixed to the rotating shaft 51a of the tang fan 51 protruding from the left side plate 91a toward the left outer side. The tang fan pulley 102 is composed of a split pulley as will be described later.

  The prefan pulley 103 is disposed on the left side of the prefan 52 between the second input pulley 101 </ b> B and the tang fan fan pulley 102. The prefan pulley 103 is fixed to the rotating shaft 52a of the prefan 52 that protrudes from the left side plate 91a toward the left outer side.

  Then, the first belt 111 is wound around the second input pulley 101B, the red fan pulley 102, and the prefan pulley 103. The first belt 111 is provided with a tension mechanism. In this tension mechanism, the tension pulley 115 is rotatably supported by the support arm 116 and is urged in a direction of pressing the first belt 111 by an urging member (not shown). Thereby, a predetermined tension is applied to the first belt 111.

  The first transport pulley 104 is disposed behind the first input pulley 101 </ b> A and on the left side of the first transport device 151. The first transport pulley 104 is fixed to the rotation shaft 151a of the first transport device 151 that protrudes from the left side plate 91a toward the left outer side. Further, the driven first transport pulley 104 a is arranged side by side on the right side of the first transport pulley 104, and is fixed to the rotating shaft 151 a of the first transport device 151, similarly to the first transport pulley 104.

  Then, the second belt 112 is wound around the first input pulley 101A and the first conveying pulley 104. The second belt 112 is provided with a tension mechanism. In this tension mechanism, the tension pulley 117 is rotatably supported by one end (rear end) of a support arm 118 that is externally fitted to the output shaft 24f so as to be rotatable relative to the output shaft 24f. The biasing member 119 interposed between the front end) and the lower machine casing 91 is biased in the direction in which the second belt 112 is pressed. The urging force of the urging member 119 can be adjusted by the adjusting mechanism 120. Thereby, a predetermined tension is applied to the second belt 112.

  The second fan pulley 105 is arranged behind the first driven pulley 104 a and on the left side of the second fan 53. The second fan pulley 105 is fixed to the rotation shaft 53a of the second fan 53 that protrudes from the left side plate 91a toward the left outer side.

  The second transport pulley 106 is disposed behind the second fan pulley 105 and on the left side of the second transport device 152. The second conveying pulley 106 is fixed to the rotation shaft 152a of the second conveyor of the second conveying device 152 protruding from the left side plate 91a toward the left outer side. A driven second transport pulley 106 a is arranged side by side on the left side of the second transport pulley 106, and is fixed to the rotation shaft 152 a of the second conveyor of the second transport device 152, similarly to the second transport pulley 106.

  The suction fan pulley 107 is disposed above the second conveyance pulley 106 and on the left side of the suction fan 59. The suction fan pulley 107 is fixed to the rotation shaft 59a of the suction fan 59 protruding toward the left outer side of the left upper machine casing 92.

  Then, the third belt 113 is wound around the driven first transport pulley 104a, the second fan pulley 105, the second transport pulley 106, and the suction fan pulley 107. The third belt 113 is provided with a tension mechanism. In this tension mechanism, the tension pulley 121 is rotatably supported by one end (front end) of a support arm 122 that is externally fitted to the rotation shaft 53a in the middle, and the other end (rear side) of the support arm 122. The third belt 113 is urged in a pressing direction by a urging member 123 interposed between the end) and the bracket 124. At the same time, the two tension pulleys are rotatably supported by the bracket 124 and are urged by the urging member 123 in the direction of pressing the third belt 113. The urging force of the urging member 123 can be adjusted by the adjusting mechanism 125. Thereby, a predetermined tension is applied to the third belt 113.

  The swing pulley 108 is disposed behind the driven second transport pulley 106a and on the left side of the swing mechanism. The swing pulley 108 is fixed to a swing shaft 50b of a swing mechanism that protrudes from the left side plate 91a side toward the left outer side.

  Then, the fourth belt 114 is wound around the driven second transport pulley 106a and the swing pulley 108. The fourth belt 114 is provided with a tension mechanism. In this tension mechanism, the tension pulley 126 is rotatably supported by the support arm 127 and is urged in a direction of pressing the fourth belt 114 by an urging member (not shown). Thereby, a predetermined tension is applied to the fourth belt 114.

  With such a configuration, power from the engine 22 is transmitted from the output shaft 24f of the counter case 24 to the rotary shaft 51a and the rotary shaft 52a via the second input pulley 101B, the tang fan pulley 102, and the first belt 111. The As a result, the Kara fan 51 and the pre-fan 52 rotate, and a sorting wind is generated.

  Power from the engine 22 is transmitted from the output shaft 24f of the counter case 24 to the rotating shaft 151a via the first input pulley 101A, the first transport pulley 104, and the second belt 112. As a result, the first conveying device 151, and thus the first cerealing device 155, is operated, and the grains accommodated in the first conveying device 151 are conveyed to the grain tank 61 via the first cerealing device 155. It becomes.

  The power transmitted to the rotating shaft 151a is driven by the rotating shaft 53a, the rotating shaft 152a, and the rotating shaft 59a, and the first conveying pulley 104a, the second fan pulley 105, the second conveying pulley 106, the suction fan pulley 107, and the third belt 113. Is transmitted through. As a result, the second fan 53 rotates and a sorting wind is generated. The second conveying device 152, and hence the second reducing device 156 is activated, and the grains accommodated in the second conveying device 152 are conveyed to the handling chamber 42 of the threshing unit 4 or the upper space of the swing sorting device 50. It becomes. As the suction fan 59 rotates, dust and the like in the sorting unit 5 are sucked and discharged from the third port (dust outlet) to the outside.

  The power transmitted to the rotary shaft 152a is transmitted via the second transport pulley 106a, the swing pulley 108, and the fourth belt 114, which are driven by the swing shaft 50b. As a result, the swing mechanism is operated, and the swing sorting device 50 (swing sorter main body 50a) is swung with respect to the left and right lower machine casings 91 and 91.

  Next, the configuration of the Chinese fan 51 will be described.

  As shown in FIGS. 3 and 6, the red fan 51 is composed of a rotating shaft 51a, a plurality of blade bodies 51b, 51b,. The rotating shaft 51a is pivotally supported by a plate 93 provided on the left and right side plates 91a and 91a of the lower machine casing 91 so as to block a part of a later-described suction port 91b at the left and right ends with the axial direction as the left-right direction. Is done. The plurality of blade bodies 51b, 51b,... Project radially from the rotation shaft 51a via the support members 51d, 51d,. Thus, the tang fan 51 is installed horizontally in the front cover plate 51c in the left-right direction and is rotatable about the rotation shaft 51a.

  The tang fan 51 is housed in a case made up of left and right side plates 91a and 91a and a front cover plate 51c provided between the side plates 91a and 91a. Suction ports 91b and 91b are provided on the left and right sides of the hot fan 51 (near both axial ends of the rotating shaft 51a). The suction ports 91b and 91b are formed in the left and right side plates 91a and 91a, respectively, and open in the left-right direction. A discharge port 51e is opened behind the hot fan 51 so as to face substantially in the front-rear direction. As a result, during the rotation of the tang fan 51, air is introduced into the front cover plate 51c from the suction ports 91b and 91b, and a sorting wind is generated by the tang fan 51, and this sorting wind is sent from the discharge port 51e to the sorting section 5. It is sent to the rear part, that is, toward the lower side of the sorting direction.

  As shown in FIGS. 6 to 8, the air volume adjusting device 13 for adjusting the air volume is provided for the tang fan 51. The air volume adjusting device 13 includes a first actuator 130, a first gear arm 131, a selected air volume detecting device 138, which will be described later, a transmission rod 132, a fixed transmission cam 134, a movable transmission cam 135, a movable pulley 136 and a fixed pulley 137. 102. Roughly speaking, the air volume adjusting device 13 (the first actuator 130 forming the main part) is disposed in the vicinity of the left suction port 91b of the Kara fan 51 and above the left suction port 91b.

  The first actuator 130 is configured by an electric motor. A first small diameter gear 130 a is fixed to the output shaft of the first actuator 130. The first gear arm 131 includes a tooth portion that can mesh with the first small-diameter gear 130a and a protruding portion 131a that protrudes radially outward. Then, the tooth portion of the first gear arm 131 is engaged with the first small diameter gear 130 a, and the protruding portion 131 a of the first gear arm 131 is connected to one end portion of the speed change rod 132.

  The first actuator 130 and the first gear arm 131 are disposed in the vicinity of the red fan 51 and above the suction port 91b of the left side plate 91a, and are attached to the left outer side of the left side plate 91a via the first mounting member 133. The first attachment member 133 is formed in a rectangular shape in a side view. The upper part 133a and the lower part 133b of the first mounting member 133 are bent in a substantially crank shape when viewed from the front from the middle part in the vertical direction toward the left side plate 91a, and a space is created between the middle part in the vertical direction and the left side plate 91a. Thus, it is possible to contact the left side plate 91a at each end.

  The first actuator 130 and the first gear arm 131 are fixed to the left outer side of the middle part of the first mounting member 133, and the end portions of the upper part 133a and the lower part 133b of the first mounting member 133 are the left side plate 91a. It is fixed by a bolt or the like in a state where it is in contact with. As a result, the first attachment member 133, and thus the first actuator 130 and the first gear arm 131, are attached to the left outer side of the left side plate 91a. In addition, the heat dissipation of the 1st actuator 130 is ensured here by the said space formed between the up-and-down middle part of the 1st attachment member 133, and the left side board.

  As shown in FIG. 8, the fixed speed change cam 134 is formed in a cylindrical shape in the left-right direction, and is externally fitted to the rotary shaft 51a via a bearing. The fixed transmission cam 134 is formed with a flange 134a protruding in the front-rear direction from the cylindrical portion. The fixed transmission cam 134 is inserted into a hole formed in the front / rear upper / lower / lower center portion of the plate 93 and is fixed to the plate 93 by the flange portion 134a. The rotating shaft 51a is inserted through the cylindrical portion of the fixed speed change cam 134 along the axial direction and is rotatably supported.

  The fixed transmission cam 134 is also formed with three cam surfaces 134b, 134b, and 134b on the left side surface of the cylindrical portion so as to be inclined with respect to a surface orthogonal to the rotation shaft 51a, and sequentially in the circumferential direction of the cylindrical portion. Be placed.

  The movable transmission cam 135 has substantially the same shape as the fixed transmission cam 134, is formed in a cylindrical shape with the left-right direction as an axis, and is externally fitted to the rotary shaft 51a so as to be slidable in the axial direction via a bearing. The The movable transmission cam 135 is formed with a flange 135a protruding in the front-rear direction from the cylindrical portion. The other end portion of the speed change rod 132 is pivotally supported by a bolt 132a at the rear portion of the flange portion 135a. That is, the rear flange 135a is linked to the protruding portion 131a of the first gear arm 131 via the speed change rod 132 extending in the vertical direction.

  The movable transmission cam 135 is also formed with three cam surfaces 135b, 135b, and 135b inclined on the right side surface of the cylindrical portion with respect to the plane orthogonal to the rotation shaft 51a, and sequentially in the circumferential direction of the cylindrical portion. Be placed. The movable transmission cam 135 is fitted to the fixed transmission cam 134 from the left side so that the cam surfaces 135b, 135b, and 135b are in contact with the cam surfaces 134b, 134b, and 134b of the fixed transmission cam 134, respectively.

  In this way, the speed change rod 132 moves up and down while the cam surfaces 134b, 134b, and 134b of the fixed speed change cam 134 and the cam surfaces 135b, 135b, and 135b of the movable speed change cam 135 are in contact with each other. The cam 135 rotates. That is, when the speed change rod 132 reaches the lowermost position, the cam faces 134b, 134b, 134b and the cam faces 135b, 135b, 135b come into full contact with each other, and the movable speed change cam 135 becomes the rightmost position. In this state, as the speed change rod 132 moves upward, the degree of contact between the cam surfaces 134b, 134b, and 134b and the cam surfaces 135b, 135b, and 135b decreases, and the movable speed change cam 135 moves to the left on the rotary shaft 51a. Will slide.

  The movable pulley 136 is one of the split pulleys of the Kara fan pulley 102, has a truncated cone shape, and is externally fitted to the rotary shaft 51a so as not to rotate relative to the rotary shaft 51a. The movable pulley 136 is disposed on the left side of the movable speed change cam 135 and is brought into contact with the movable speed change cam 135 from the right side thereof at a cylindrical portion 136a formed in the shaft center portion. When the movable transmission cam 135 slides in the left-right direction on the rotation shaft 51a, the movable pulley 136 moves integrally with the movable transmission cam 135 in the left-right direction.

  The fixed pulley 137 is the other of the split pulleys of the Kara fan pulley 102, has a truncated cone shape, and is supported on the rotating shaft 51a so as not to be relatively rotatable. The fixed pulley 137 is disposed on the left side of the movable pulley 136 so as to face the movable pulley 136. Thus, a belt groove of the tang fan fan pulley 102 is formed between the fixed pulley 137 and the movable pulley 136. The belt groove width is changed narrowly or widely as the movable pulley 136 slides in the left-right direction with respect to the fixed pulley 137. A first belt 111 composed of a V belt or the like is wound around the belt groove.

  In such a configuration, the first small-diameter gear 130a is rotated by driving the first actuator 130, and the first gear arm 131 that meshes with the first small-diameter gear 130a is rotated clockwise in FIG. When rotating, the protrusion 131 a of the first gear arm 131 moves downward, and the flange 135 a of the movable transmission cam 135 is pushed downward by the transmission rod 132. As a result, the movable transmission cam 135 rotates about the rotation shaft 51a so that the degree of contact between the cam surfaces 134b, 134b, and 134b and the cam surfaces 135b, 135b, and 135b of the fixed transmission cam 134 increases. Then, it moves in the direction close to the fixed transmission cam 134, that is, in the right direction. As the movable transmission cam 135 moves, the movable pulley 136 contacts the movable transmission cam 135 and moves away from the fixed pulley 137 by the component of the tension in the first belt 111 to the right, that is, in the right direction. Slide along the rotary shaft 51a. As a result, as shown in FIG. 8 (a), the belt groove width of the red fan pulley 102 is widened, and the rotation radius of the first belt 111 is small. As a result, the rotational speed of the rotating shaft 51a increases and the air volume of the tang fan 51 increases.

  On the other hand, the first small diameter gear 130a is rotated by driving the first actuator 130, and the first gear arm 131 meshing with the first small diameter gear 130a is rotated in the counterclockwise direction in FIG. In this case, the protrusion 131 a of the first gear arm 131 moves upward, and the flange 135 a of the movable transmission cam 135 is pulled upward by the transmission rod 132. As a result, the movable transmission cam 135 rotates around the rotation shaft 51a so that the degree of contact between the cam surfaces 134b, 134b, and 134b and the cam surfaces 135b, 135b, and 135b of the fixed transmission cam 134 is reduced. Then, it moves in a direction away from the fixed speed change cam 134, that is, in the left direction. With the movement of the movable transmission cam 135, the movable pulley 136 is pushed by the movable transmission cam 135 and slides along the rotary shaft 51a in the direction approaching the fixed pulley 137, that is, in the left direction. As a result, as shown in FIG. 8B, the belt groove width of the red fan pulley 102 is narrowed, and the rotation radius of the first belt 111 is increased. As a result, the rotational speed of the rotating shaft 51a is reduced, and the air volume of the tang fan 51 is reduced.

  Next, the configuration of the chaff sheave 56 will be described.

  As shown in FIG. 9, the chaff sheave 56 includes a large number of fins 56 a, 56 a..., A pair of left and right first pivot pieces 145 and 145, and a pair of left and right second pivot pieces 146 and 146. . The left and right first pivot support pieces 145 extend in the front-rear direction and are fixed to the outer side surfaces on the left and right side plates of the swing sorting device main body 50a. The left and right second pivot pieces 146 extend in the front-rear direction in parallel with the left and right first pivot pieces 145, and are respectively disposed directly below the left and right first pivot pieces 145 at a predetermined interval.

  A large number of fins 56a, 56a,... Are arranged at predetermined intervals in the front-rear direction, and are horizontally mounted between the left and right first pivot support pieces 145, 145 in a state of being inclined in the front-rear and rear-height state. The left and right second pivot pieces 146 and 146 are horizontally mounted. The upper edge portions on both the left and right sides of each fin 56a pass through the holes in the side plate and are pivotally supported by the first pivot piece 145, and the lower edge portions on both the left and right sides penetrate the long holes in the side plate to form the second pivotal support. It is pivotally supported by the piece 146. Thus, when the second pivot piece 146 moves in the front-rear direction along the first pivot piece 145, each fin 56a is swung with the upper edge portions on both the left and right sides as fulcrums, and the angle of the fin 56a is changed. That is, the opening degree of the chaff sheave 56 is changed.

  As shown in FIGS. 6, 7, and 9, the opening adjustment device 14 for adjusting the opening of the chaff sheave 56 is provided. The opening adjustment device 14 includes a second actuator 140, a second gear arm 141, a chaff opening detection device 142, which will be described later, a wire 143, an adjustment lever 147, an urging member 148, and the like. Roughly speaking, the opening degree adjusting device 14 (second actuator 140 constituting the main part) is disposed in the vicinity of the left suction port 91b of the Kara fan 51 and behind the left suction port 91b. Here, the opening degree adjusting device 14 adjusts the opening degree of the chaff sheave 56 so as to increase or decrease with respect to a preset reference opening degree.

  The second actuator 140 is composed of an electric motor. A second small diameter gear 140 a is fixed to the output shaft of the second actuator 140. The second gear arm 141 includes a tooth portion that can mesh with the second small-diameter gear 140a and a protruding portion 141a that protrudes radially outward. Then, the second small diameter gear 140a and the tooth portion of the second gear arm 141 are engaged with each other, and the protruding portion 141a of the second gear arm 141 and one end portion of the wire 143 are connected.

  The second actuator 140 and the second gear arm 141 are arranged in the vicinity of the red fan 51 and behind the suction port 91b of the left side plate 91a, and are attached to the left outer side of the left side plate 91a via the second mounting member 144. The second attachment member 144 is formed in a substantially rectangular shape with one corner cut out in a side view. The upper part 144a and the lower part 144b of the second mounting member 144 are bent in a substantially crank shape when viewed from the front side from the upper and lower halfway part toward the left side plate 91a, and a space is created between the upper and lower halfway part and the left side plate 91a. Thus, it is possible to contact the left side plate 91a at each end.

  The second actuator 140 and the second gear arm 141 are accommodated in the space formed between the upper and lower middle portions of the second mounting member 144 and the left side plate 91a, while the second middle portion of the second mounting member 144 is disposed. After being fixed to the right inner side, the respective ends of the upper portion 144a and the lower portion 144b of the second mounting member 144 are fixed to the left side plate 91a with bolts or the like. As a result, the second actuator 140 and the second gear arm 141 are attached to the left outer side of the left side plate 91a.

  As shown in FIG. 10A, the adjustment lever 147 is formed of a plate member. The adjustment lever 147 is formed in a pentagonal shape in a side view, and is inclined to the front, lower, and rear with the longitudinal direction being substantially vertical, and the left side of the left first pivot piece 145 and the second pivot piece 146 Placed in. The adjustment lever 147 is rotatably supported at the upper end portion of the left first pivot support piece 145 by a support shaft 147a at the upper end portion, and at the upper and lower middle portions of the adjustment lever 147 at the front and rear positions of the left second pivot support piece 145. It is pivotally connected to the middle part. The other end of the wire 143 is connected to the lower end of the adjustment lever 147 from the front. That is, the lower end portion of the adjustment lever 147 is linked to the protruding portion 141 a of the second gear arm 141 via the wire 143.

  In addition, one end of an urging member 148 made of a spring or the like is connected to the lower end of the adjustment lever 147 from the rear. Then, the adjustment lever 147 is urged by the urging member 148 so as to rotate via the support shaft 147a in the direction opposite to the pulling direction (front direction) of the wire 143 (backward direction). As shown in FIG. 10B, when the adjustment lever 147 rotates backward about the support shaft 147a according to the biasing force of the biasing member 148, the second pivot pieces 146 and 146 are moved to the first pivots. The fins 56a are moved rearward with respect to the support pieces 145 and 145, and the fins 56a are rotated around the upper edge portions on both the left and right sides, and the angles of the fins 56a are changed in the increasing direction.

  In such a configuration, the second small-diameter gear 140a is rotated by driving the second actuator 140, and the second gear arm 141 meshing with the second small-diameter gear 140a is rotated counterclockwise in FIG. 7 around the support shaft 147a. When rotating in the direction, the protrusion 141a of the second gear arm 141 moves downward, and the lower end of the adjustment lever 147 is pulled forward against the urging force of the urging member 148 by the wire 143. 147 rotates forward about the support shaft. As the adjustment lever 147 rotates, the second pivot pieces 146 and 146 move forward with respect to the first pivot pieces 145 and 145, and the fins 56a move the upper and lower edges of the left and right sides. Rotate forward to the center. As a result, as shown in FIG. 10A, the angle of each fin 56a is reduced, the interval between adjacent fins 56a and 56a is reduced, and the opening of the chaff sheave 56 is reduced.

  On the other hand, the second small-diameter gear 140a is rotated by the driving of the second actuator 140, and the second gear arm 141 meshing with the second small-diameter gear 140a is rotated about the support shaft 147a in the clockwise direction in FIG. In this case, the protruding portion 141a of the second gear arm 141 moves upward, the wire 143 is loosened, and the adjustment lever 147 rotates backward about the support shaft 147a according to the biasing force of the biasing member 148. As the adjusting lever 147 rotates, the second pivot pieces 146 and 146 move rearward with respect to the first pivot pieces 145 and 145, and the fins 56a move the upper edge portions on the left and right sides. Rotate backward to the center. As a result, as shown in FIG. 10B, the angle of each fin 56a is increased, the interval between adjacent fins 56a and 56a is increased, and the opening of the chaff sheave 56 is increased.

  Next, the control configuration of the air volume adjusting device 13 and the opening degree adjusting device 14 will be described.

  In the combine 1, the control apparatus 12 is provided in the arbitrary positions of a body. The control device 12 includes a CPU, ROM, RAM, interface, bus, and the like. As shown in FIG. 11, the control device 12 includes a waste amount detection device 73, a processed material amount detection device 47, a sorting air amount detection device 138, a chaff opening detection device 142, a first setting operation tool 84, And a second setting operation tool 85. The control device 12 is also connected to the air flow adjustment device 13, specifically the first actuator 130 thereof, and the opening degree adjustment device 14, specifically the second actuator 140 thereof.

  The waste amount detection device 73 is a device that detects the amount of waste after threshing that is transported by the waste transport device 71 in the waste processing unit 7.

  Here, as shown in FIG. 12, the waste transporting device 71 includes a waste chain 74, a pinch 75, a support rod 76, and the like. In the waste transporting device 71, the scissors 75 are extended along the longitudinal direction of the waste chain 74, and are disposed below the waste chain 74 so as to face the lower part thereof. The clamp 75 is supported from below by the urging member 77 while being supported from below by the support rod 76 so as to be movable toward and away from the lower portion of the exhaust chain 74 on the rear side of the machine body. It is always urged to move in the direction approaching the lower part of the waste chain 74 via the rod 76. Thus, the threshing waste after being transported from the feed chain 41 is sandwiched between the lower part of the waste chain 74 and the sandwiching pin 75 that moves up and down according to the amount of waste being transported. It is conveyed rearward according to the rotational drive of the saddle chain 74.

  In the present embodiment, the waste amount detection device 73 includes an arm portion 73 a and a sensor portion 73 b including a potentiometer and is disposed below the waste transport device 71. In the waste amount detection device 73, one end portion of the arm portion 73a is attached to the rotation shaft of the sensor portion 73b so as to be rotatable in the vertical direction, and the other end portion of the arm portion 73a is the lower end of the support rod 76 of the waste conveyance device 71. Are always pressed from below to above. When the clamp 75 is moved in the vertical direction according to the amount (layer thickness) of the waste conveyed while being held by the reject chain 74 and the clamp 75 together with the support rod 76, the arm portion 73a. Is rotated in the same direction in accordance with the movement of the support rod 76, and the amount of rotation is detected as the amount of waste by the sensor unit 73b.

  The processed material amount detection device 47 is a device that detects the amount of processed material on the chaff sheave 56 of the swing sorting device 50 in the sorting unit 5. In the present embodiment, as shown in FIG. 13, the processed material amount detection device 47 includes a detection plate 47 a, a return plate 47 b, and a sensor unit 47 c including a potentiometer and is disposed above the chaff sheave 56. (See FIG. 3). In the processing amount detection device 47, one end of the detection plate 47a is attached to the rotation shaft of the sensor unit 47c so as to be rotatable in the front-rear direction, and the other end of the detection plate 47a is located when the detection plate 47a is at the initial position. The chaff sheave 56 is disposed so as to be located at a predetermined distance above the fin 56a. The return plate 47b is integrally attached to the rear side of the detection plate 47a. When the processing object flows from the front and comes into contact with the detection plate 47a, the detection plate 47a is rotated backward from the initial position in accordance with the amount (flow pressure) of the processing object, and the rotation amount is determined by the sensor. It is detected as the amount of processed material by the unit 47c. On the other hand, when the processing object does not contact the detection plate 47a, the detection plate 47a is held at the initial position where the detection value detected as the processing object amount becomes zero due to the weight of the return plate 47b.

  The sorting air volume detection device 138 is a device that detects the sorting air volume sent from the front cover plate 51 c toward the lower side of the sorting direction by the Kara fan 51. In the present embodiment, as shown in FIG. 7, the selected air volume detection device 138 is composed of a non-contact type rotation sensor using magnetism or light, and is disposed in the vicinity of the rotation shaft 51 a of the tang fan 51. In the sorting air volume detection device 138, when the red pepper fan 51 is driven to rotate, the rotation speed of the rotating shaft 51a is detected as the sorting air volume by the red pepper fan 51.

  The chaff opening detection device 142 detects the opening of the chaff sheave 56. In the present embodiment, as shown in FIG. 7, the chaff opening detection device 142 includes an arm portion 142 a and a sensor portion 142 b including a potentiometer and is disposed on the right side of the opening adjustment device 14. . In the chaff opening detection device 142, one end portion of the arm portion 142a is attached to the rotation shaft of the sensor portion 142b so as to be freely rotatable in the vertical direction, and the other end portion of the arm portion 142a is the opening adjustment device 14 and the second gear arm 141. The protrusion 141a is always in pressure contact with the protrusion protruding leftward from the bottom upward. And when the protrusion part 141a of the 2nd gear arm 141 is moved to the up-down direction according to the drive amount of the 2nd actuator 140, the arm part 142a is rotated in the same direction according to the movement of the protrusion part 141a, The rotation amount is detected as the opening degree of the chaff sheave 56 by the sensor unit 142b.

  The first setting operation tool 84 artificially corrects the reference value of the selected air volume by the Kara fan 51. In the present embodiment, as illustrated in FIG. 14A, the first setting operation tool 84 includes a dial 84 a and a sensor unit 84 b and is disposed in the vicinity of the operation panel of the control unit 8. In the first setting operation tool 84, when the dial 84 a is rotated, the angle of the dial 84 a is detected by the sensor unit 84 b and transmitted to the control device 12 as a correction value for the selected air volume by the tang fan 51.

  The second setting operation tool 85 artificially corrects the reference value of the opening degree of the chaff sheave 56. In the present embodiment, as shown in FIG. 14B, the second setting operation tool 85 has a dial 85 a and a sensor unit 85 b and is disposed in the vicinity of the operation panel of the control unit 8. In the second setting operation tool 85, when the dial 85a is rotated, the angle of the dial 85a is detected by the sensor unit 85b and transmitted to the control device 12 as a correction value of the opening degree of the chaff sheave 56.

  The specific configurations of the waste amount detection device 73, the processed product amount detection device 47, the sorting air amount detection device 138, the chaff opening detection device 142, the first setting operation tool 84, and the second setting operation tool 85 are particularly limited. The above-described configuration is an example.

  In such a configuration, when the harvesting operation is being performed by the combine 1, the control device 12 determines the chaff sheave 56 based on the detection value of the waste amount detection device 73 (and at least one of the processed material amount detection devices 47). Control the air volume adjusting device 13 and the opening adjusting device 14 so that the opening becomes an appropriate opening for sorting the processed material and the air volume selected by the tang fan 51 becomes an appropriate air volume for selecting the processed material. It becomes.

  Specifically, when the amount of waste after threshing increases during the cutting operation, and the layer thickness of the waste being transported by the waste transporting device 71 increases, the waste amount detecting device 73 detects that point in time. Is detected, and this detected value is input to the control device 12. Then, based on the input detection value, the control device 12 calculates a correction amount for the opening reference value of the opening of the chaff sheave 56 and a correction amount for the air flow reference value of the selected air flow by the Chinese fan 51, The second actuator 140 of the opening degree adjusting device 14 is driven according to the calculation result.

  As a result, the opening degree adjusting device 14 rotates the fins 56a so that the angle increases, and the opening degree of the chaff sheave 56 is increased from the opening reference value to an appropriate opening degree. At the same time, the air volume adjusting device 13 narrows the belt groove width of the tang fan fan pulley 102 and increases the selected air volume by the tang fan 51 from the air volume reference value to an appropriate selected air volume.

  On the other hand, when the amount of waste after threshing is reduced during the cutting operation, and the layer thickness of the waste being transported by the waste transporting device 71 is reduced, the waste amount detecting device 73 is rejected at that time. The amount is detected, and this detected value is input to the control device 12. Then, based on the input detection value, the control device 12 calculates a correction amount for the opening reference value of the opening of the chaff sheave 56 and a correction amount for the air flow reference value of the selected air flow by the Chinese fan 51, The first actuator 130 of the air volume adjusting device 13 and the second actuator 140 of the opening adjusting device 14 are driven according to the calculation result.

  As a result, the opening degree adjusting device 14 rotates the fins 56a so that the angle becomes small, and the opening degree of the chaff sheave 56 is reduced from the opening reference value to an appropriate opening degree. At the same time, the air volume adjusting device 13 narrows the belt groove width of the tang fan fan pulley 102 to reduce the selected air volume by the tang fan 51 from the air volume reference value to an appropriate selected air volume.

  Next, the flow of air on the left side of the sorting unit 5 during the cutting operation will be described.

  On the left side of the sorting unit 5, when the tang fan 51 is rotationally driven while the air volume adjusting device 13 is controlled by the control device 12 as described above, the air flows from the outside of the sorting unit 5 to the left and right side plates in the lower machine casing 91. The air flows toward the suction port 91b of the tang fan 51 formed in 91a and 91a, respectively, and is sucked from each of the suction ports 91b into the case composed of the left and right side plates 91a and 91a and the front cover plate 51c provided therebetween. Will be.

  At this time, since the air volume adjusting device 13 is disposed in the vicinity of the left suction port 91b of the tang fan 51 and above the left suction port 91b, a part of the air is indicated by a black arrow in FIG. And after passing around the first actuator 130, the first gear arm 131, the transmission rod 132, the fixed transmission cam 134, the movable transmission cam 135, the movable pulley 136, and the fixed pulley 137 of the air volume adjusting device 13, 51 is sucked into the case from the left suction port 91b.

  Further, since the opening degree adjusting device 14 is disposed in the vicinity of the left suction port 91b of the red fan 51 and behind the left suction port 91b, a part of the air is indicated by a white arrow in FIG. The second mounting member 144 and the left side plate 91a flow in a concentrated manner from the rear to the front, and the second actuator 140 and the second gear arm 141 of the opening adjustment device 14 and the chaff are opened. After passing around the degree detecting device 142, the air is sucked into the case from the left suction port 91b of the tang fan 51.

  Next, the covering configuration on the left outer side of the sorting unit 5 will be described.

  As shown in FIGS. 1, 15, and 16, the sorting drive transmission mechanism 100, the air volume adjusting device 13, and the opening degree adjusting device 14 arranged on the left outer side of the sorting unit 5 include a lower cover 17 and a side cover 15. And from the left side. The lower cover 17 is divided into two parts, front and rear, and includes a front lower cover 17a at the front and a rear lower cover 17b at the rear. The front lower cover 17a and the rear lower cover 17b are detachably attached to the lower machine casing 91 or the like.

  The front lower cover 17a is disposed on the left side of the front lower portion of the sorting drive transmission mechanism 100. The front lower cover 17a is formed by inclining the front side to the front high rear low state and the rear side to the front low rear high state among the upper sides of the rectangular plate material having the longitudinal direction in the side view as viewed from the side. The rectangular plate is configured to have a shape in which a corner on the lower front side is cut out. The front lower cover 17a is disposed on the left side and the left front side of the front lower part of the sorting unit 5 with its plate surface facing the plate surface of the left side plate 91a.

  The rear lower cover 17b is configured to have a substantially trapezoidal shape in side view having a larger vertical width than the front lower cover 17a by inclining the upper side of a rectangular plate member having a longitudinal direction in the front-rear direction in a side view as a front low rear high state. Is done. The rear lower cover 17b is disposed on the left side of the front lower portion of the sorting unit 5 with its plate surface facing the plate surface of the left side plate 91a. The rear lower cover 17b is positioned just behind the front lower cover 17a, so that the upper edge smoothly contacts the upper edge of the rear lower cover 17b without any gaps. It is possible to contact.

  As shown in FIG. 17, the side cover 15 is formed of a plate material having a substantially trapezoidal shape when viewed from the side by inclining the lower side of the rectangular plate material having the longitudinal direction as the longitudinal direction when viewed from the side to the front, low, and high state. The side cover 15 is disposed on the left side of the upper portion of the sorting unit 5 with its plate surface facing the plate surface of the left side plate 91a. The lower portion 15b of the side cover 15 is bent to the left outer side along a folding line set in parallel with the lower side with respect to the upper portion 15a of the side cover 15, and is inclined to the lower left from the folding curve. It is formed.

  The lower edge portion of the side cover 15, that is, the lower end of the lower portion 15b is formed in a shape along the upper edge portions of the front lower cover 17a and the rear lower cover 17b while being slightly bent inward. In this way, the side cover 15 can be brought into contact with the front lower cover 17a and the rear lower cover 17b without any gap in a state where the side cover 15 is disposed immediately above the front lower cover 17a and the rear lower cover 17b.

  The side cover 15 is attached to the support frame 16 of the feed chain 41. Specifically, the side cover 15 abuts on the two support rods 16g and 16g connected to the horizontal frame of the support frame 16 from the left side, and is fixed by a fixture such as a bolt.

  In the vicinity of the left side of the threshing unit 4 and the sorting unit 5, the feed chain cover 18 is attached to the support frame 16 so as to be located on the left outer side of the feed chain 41, and the side cover 15 is attached by the feed chain cover 18. Covered from the left side.

  With such a configuration, a part of the first input pulley 101A of the sorting drive transmission mechanism 100 arranged on the lower side of the members arranged on the left outer side of the sorting unit 5 and a part of the Kara fan pulley 102 are arranged. A pre-fan pulley 103, a first conveying pulley 104, a second fan pulley 105, a second conveying pulley 106, a swinging pulley 108, a belt, and the like, a lower part of the air volume adjusting device 13, and an opening adjusting device. 14 is covered from the left side by the lower cover 17, that is, the front lower cover 17a and the rear lower cover 17b. Further, among the members arranged on the left outer side of the sorting unit 5, a part of the tang fan fan pulley 102 of the sorting drive transmission mechanism 100 arranged on the upper side, a belt, etc., the upper part of the air volume adjusting device 13, and the opening. The upper part of the degree adjusting device 14 is covered with the side cover 15.

  When the front lower cover 17a, the rear lower cover 17b, and the side cover 15 cover the members as described above, they are in contact with each other without any gap, so that, for example, sawdust falls from the feed chain 41. Even so, it is guided to the left side by the lower part of the side cover 15, and the intrusion into the front lower cover 17a and the rear lower cover 17b is prevented. That is, such sawdust is not deposited on the sorting drive transmission mechanism 100, the air volume adjusting device 13, and the opening degree adjusting device 14.

  Further, in order to open and close the front lower cover 17a and the rear lower cover 17b, it is necessary to attach and detach fixing tools such as bolts. On the other hand, to open and close the side cover 15, the side cover 15 is integrated with the support frame 16 of the feed chain 41. Therefore, it is not necessary to attach or detach a fixture such as a bolt. That is, the support frame 16 is rotated and held in the closed position by the holding mechanism, or the holding is released and moved to the open position, whereby the side cover 15 is opened and closed simultaneously with the opening and closing of the feed chain 41. It becomes possible.

  When the side cover 15 is opened, at least part of the sorting drive transmission mechanism 100, the air volume adjusting device 13, and the opening degree adjusting device 14 are exposed toward the left side of the sorting unit 5, and It will be exposed upward from between the front lower cover 17a and rear lower cover 17b and the left side plate 91a. That is, at least a part of the sorting drive transmission mechanism 100, the air volume adjusting device 13, and the opening adjusting device 14 are exposed toward the outside of the machine body.

  The size of the side cover 15, that is, the front-rear width and the upper-lower width are not limited to the above. For example, the front end of the side cover 15 is positioned near the front of the tang fan fan pulley 102 in the present embodiment, but may be positioned near the front of the input pulley 101. In this case, the side of the counter case 24 can also be covered with the side cover 15, and a cover that covers the side of the counter case 24 becomes unnecessary. Then, the counter case 24 can be maintained simply by pivoting sideways around the pivot fulcrum frame 16 f provided at the rear portion of the support frame 16 and opening the feed chain 41.

  The side cover 15 can also be configured to serve as both the front lower cover 17a and the rear lower cover 17b. Then, the maintenance of the entire sorting drive transmission mechanism 100, for example, the belt 111, can be performed by simply rotating to the side around the rotation fulcrum frame 16 f provided at the rear of the support frame 16 and opening the feed chain 41. It becomes possible to readjust the tensions of 112, 113, and 114 with the adjusting mechanisms 120 and 125, etc.

  As described above, the combine 1 according to the embodiment of the present invention includes the threshing unit 4 that threshs the harvested cereal and the processed product threshed by the threshing unit 4 with the swing sorting device 50 and the tang. In the combine 1 including the sorting unit 5 that sorts by the sorting air by the fan 51, the air volume adjusting device 13 that changes the air volume of the sorting air by the Kara fan 51, and the opening of the chaff sheave 56 of the swing sorting device 50 The air volume adjusting device 14 and the air volume adjusting device 13 are provided. The air volume adjusting device 13 and the air volume adjusting device 13 are provided. The device 14 is disposed in the vicinity of the suction port 91b of the tang fan 51.

  Thus, when the tang fan 51 is driven, the air volume adjusting device 13 (the first actuator 130, the first gear arm 131, the transmission rod 132, the fixed transmission cam 134, the movable transmission cam 135, the movable pulley 136) disposed in the vicinity of the suction port 91b. When the air around the fixed pulley 137, the selected air volume detecting device 138, etc.) is sucked in, the dust accumulated in the air volume adjusting device 13 is also sucked in at the same time, so that the dust etc. are not easily collected in the air flow adjusting device 13. Therefore, the maintenance work of the air volume adjusting device 13 can be reduced. In addition, the air flow around the first actuator 130 can increase the cooling capacity for the first actuator 130, which can contribute to the downsizing and cost reduction of the first actuator 130.

  Further, when the Kara fan 51 is driven, when air around the opening adjusting device 14 (the second actuator 140, the second gear arm 141, the chaff opening detecting device 142, etc.) disposed in the vicinity of the suction port 91b is sucked. At the same time, dust or the like accumulated on the second actuator 140, the second gear arm 141, and the chaff opening detection device 142 is sucked in, and the dust or the like is not easily collected on the second actuator 140, the second gear arm 141, and the chaff opening detection device 142. In addition, since the second actuator 140, the second gear arm 141, and the chaff opening detection device 142 of the opening adjustment device 14 are further covered by the second mounting member 144, dust and dust are particularly difficult to collect therein. Become. Therefore, the maintenance labor of the opening degree adjusting device 14 can be reduced. In addition, the air flow around the second actuator 140 can increase the cooling capacity of the second actuator 140, which can contribute to the downsizing and cost reduction of the second actuator 140.

  In addition, a threshing unit 4 that threshs the harvested cereals and a sorting unit 5 that sorts a processed product that has been threshed by the threshing unit 4 by using a swing sorting device 50 and a sorting wind by a tang fan 51. In the combine 1, the air volume adjusting device 13 for changing the air volume of the sorting air by the tang fan 51, the opening degree adjusting device 14 for changing the opening degree of the chaff sheave 56 of the swing sorting device 50, and the tang fan 51 And a case having a suction port 91b through which air sucked into the hot fan 51 flows, the suction port 91b being formed in a side plate 91a of the case, and the air volume control device 13 and the opening degree control One of the devices 14 is arranged outside the side plate 91a of the case and above the suction port 91b, so that the air volume adjusting device 13 and the opening degree adjusting device 14 are connected. And the other regulating device in the side plate 91a outside the casing, in which is disposed behind the suction port 91b

  As a result, dust and the like are easily affected by the flow of wind generated by the driving of the tang fan 51, and are less likely to accumulate in the air volume adjusting device 13 and the opening degree adjusting device 14. Therefore, the maintenance work of the air volume adjusting device 13 and the opening degree adjusting device 14 can be reduced. Further, since the air volume adjusting device 13 and the opening degree adjusting device 14 are arranged on the same side, these maintenance operations can be performed from the same side of the sorting unit 5. Therefore, the maintenance work of the adjusting devices 13 and 14 can be simplified. Further, since the air volume adjusting device 13 and the opening degree adjusting device 14 are arranged close to each other, the maintenance work can be simplified. Moreover, since the air volume adjusting device 13 and the opening degree adjusting device 14 are disposed close to the suction port 91b, dust and the like are less likely to collect.

  Moreover, the combine 1 which concerns on one Embodiment of this invention arrange | positions the threshing part 4 behind the harvesting part 3, arrange | positions the selection part 5 below the said threshing part 4, and the said harvesting part 4 uses the said harvesting part. In the combine 1 that threshs the cereals harvested by 3 with the handling cylinder 43 while being transported by the feed chain 41 and sorts the processed product threshed by the threshing unit 4 in the sorting unit 5, A sorting drive transmission mechanism 100 that is disposed laterally and below the feed chain 41 and transmits power to the sorting unit 5 and a support frame 16 that supports the feed chain 41 are attached to the sorting drive. And a side cover 15 that covers at least a part of the transmission mechanism 100 from the outside.

  As a result, as shown in FIG. 2, the side cover 15 is also opened at the same time simply by rotating the feed chain 41 together with the support frame 16 to the side around the pivot fulcrum frame 16 f provided at the rear thereof. Thus, at least a part of the sorting drive transmission mechanism 100 of the sorting unit 5 can be exposed outward. Therefore, when performing maintenance of the sorting drive transmission mechanism 100, for example, it is unnecessary to temporarily remove the side cover 15 from the machine body side and place it on the ground or the like, and the labor of opening the side cover 15 is reduced compared to the conventional case. Maintainability can be improved.

  Further, the air volume adjusting device 13 for changing the air volume of the tang fan 51 of the sorting unit 5 and the opening adjusting device 14 for changing the opening of the chaff sheave 56 provided in the swing sorting device of the sorting unit 5 are described above. It is arranged on the side of the sorting unit 5 and below the feed chain 41 and covered with the side cover 15.

  Thereby, the side cover 15 is opened, and the air volume adjusting device 13 (particularly the first actuator 130, the first gear arm 131, the speed change rod 132) and the opening degree adjusting device 14 (particularly the wire 143) which are actuators with relatively high maintenance frequency. ) Can be easily maintained.

DESCRIPTION OF SYMBOLS 1 Combine 4 Threshing part 5 Sorting part 12 Control apparatus 13 Air volume adjusting apparatus 14 Opening degree adjusting apparatus 15 Side cover 16 Support frame 17 Lower cover 17a Front lower cover 17b Rear lower cover 18 Feed chain cover 41 Feed chain 50 Oscillating sorting apparatus 51 Kara fan 56 chaff sheave 91 Lower machine casing 91a Left side plate (side plate)
91b Left inlet (inlet)
100 Transmission mechanism for sorting drive 130 First actuator 140 Second actuator

Claims (2)

In a combine equipped with a threshing unit for threshing the harvested cereal and a sorting unit for sorting the processed product threshed by the threshing unit with a sorting screen and a sorting fan by a tang fan,
An air volume adjusting device for changing the air volume of the sorting air by the Kara fan,
An opening degree adjusting device for changing the opening degree of the chaff sheave of the swing sorting device;
A case having a suction port through which the hot-water fan is accommodated and air to be sucked into the hot-water fan is circulated;
The combine characterized in that the air volume adjusting device and the opening degree adjusting device are arranged in the vicinity of the inlet of the tang fan. In a combine equipped with a threshing unit for threshing the harvested cereal and a sorting unit for sorting the processed product threshed by the threshing unit with a sorting screen and a sorting fan by a tang fan,
An air volume adjusting device for changing the air volume of the sorting air by the Kara fan,
An opening degree adjusting device for changing the opening degree of the chaff sheave of the swing sorting device;
A case having a suction port through which the hot-water fan is accommodated and air to be sucked into the hot-water fan is circulated;
Forming the suction port in the side plate of the case;
Of the air volume adjusting device and the opening degree adjusting device, one adjusting device is disposed outside the side plate of the case and above the suction port.
The combine is characterized in that the other adjusting device of the air volume adjusting device and the opening adjusting device is disposed outside the side plate of the case and behind the suction port.

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