JP2017158505A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester enabled to separate a waste straw or dust and grains efficiently by causing grains poured from a grain discharge conveyor 8 to repulse at a grain repulsing guide plate 234.SOLUTION: A combine-harvester comprises: a harvesting part 3 having a mowing blade 15; a refining part 9 having a handling drum 21; a running airframe 1 having an engine 7 at the back of the refining part 9; and an unhulled rice receiving part 6 for taking out the grains from the refining part 9 through a grain discharge conveyor 8, and an unhulled rice bag 37 of the unhulled rice receiving bag 6 is charged with the grains of the refining part 9. A grain repulsing guide plate 234 for opposing the pouring port 8c of the grain discharge conveyor 8 is provided. A wind selection meandering passage 231 is made to communicate with the pouring port 8c of the grain discharge conveyor 8 through the grain repulsing guide plate 234.SELECTED DRAWING: Figure 18

Description

  The present invention relates to a combine equipped with a reaping part for reaping uncut cereal grains in a field and a threshing part for threshing grains of the harvested cereal grains.

  Conventionally, a cutting part having a grain header, a feeder house and a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with a traveling part and an engine, and a bowl for taking out the grain from the threshing part via a grain discharge conveyor. There is a technology that includes a portion, continuously chops uncut cereal straw in the field, threshs, and fills the sack bag of the cradle receiving portion with the grain of the threshing portion (see Patent Documents 1 to 3).

Japanese Utility Model Publication No. 52-96776 Japanese Patent Publication No.55-20646 JP 2002-239465 A

  In Patent Document 1, a suction fan is mounted on the grain discharge conveyor shaft, and a suction fan device is provided at the feed end of the grain discharge conveyor. In the case of being conveyed, there is a problem in the sorting function such that it is easy to be discharged out of the apparatus from the suction fan device in a state where grains are mixed in lump-like sawdust. In patent document 2, since the suction fan device is provided in the middle of feeding of the grain discharge conveyor, there is a structural problem such that the structure of the grain discharge conveyor or the suction fan device cannot be easily simplified. Although there is a wind selection technique in which a wind-selective meandering passage is provided as in Patent Document 3, since a suction fan device is provided inside the wind-selective meandering passage, there is a structural problem such that it cannot be mounted compactly in a combine machine body.

  Therefore, the present invention seeks to provide a general combine that has been improved by examining these current conditions.

  In order to achieve the above object, the combine according to the first aspect of the present invention includes a cutting part having a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with an engine behind the threshing part, and a grain discharge conveyor. In a combine that includes a trough receiving part for taking out the grain from the threshing part via the sack, and filling the trough bag of the trough receiving part with the grain of the threshing part, the grain opposed to the outlet of the grain discharge conveyor A grain repulsion guide plate is provided, and a wind-selective meandering passage is communicated with a dispensing port of the grain discharge conveyor via the grain repulsion guide plate.

  According to a second aspect of the present invention, in the combine according to the first aspect, an air passage forming duct body in which the meandering passage for wind selection is formed is provided, and the air passage is formed rather than a lateral width dimension of the grain discharge conveyor. The duct body is formed to have a large left-right width dimension, and a dust suction port is formed so as to face the wind selection outlet side of the grain repulsion guide plate.

  According to a third aspect of the present invention, in the combine according to the first aspect, a filling hopper is provided on the outlet side of the wind-selective meandering passage for supplying grains to the straw bag of the cup-receiving portion. The filling hopper is communicated with a dispensing port of the grain discharge conveyor via a meandering passage.

  According to a fourth aspect of the present invention, in the combine according to the first aspect, an air passage forming duct body in which the meandering passage for wind selection is formed is provided, and a connecting portion between the grain discharge conveyor and the air passage forming duct body is provided. A suction fan device for sucking and discharging dust is arranged, and the dust suction side of the suction fan device communicates with the dust suction port of the wind-selective meandering passage.

  According to invention of Claim 1, the cutting part which has a cutting blade, the threshing part which has a handling drum, the traveling machine body which provides an engine behind the said threshing part, and the said threshing part via a grain discharge conveyor In the combine which is equipped with the cradle receiving part which takes out grain from the cradle, and is filled with the grain of the threshing part in the straw bag of the cradle receiving part, the guide plate for the grain repelling which is opposed to the outlet of the grain discharge conveyor Since it is configured to communicate the wind-meandering meandering passage through the grain repulsion guide plate to the outlet of the grain discharge conveyor, compared to a structure in which a swing sorter is installed. It can be configured at low cost, the number of components can be reduced, weight reduction or cost reduction can be easily achieved, and the combine machine structure can be configured compactly. It is possible to move while solving the lump of grains and dust falling into the wind-measuring meandering passage from the outlet. The grain thrown out from the grain discharge conveyor is repelled by the grain repulsion guide plate, so that it is possible to efficiently separate swarf or dust and the grain, and the sorting performance of the grain taken out to the cradle receiving portion Can be improved easily.

  According to invention of Claim 2, the air-path formation duct body in which the said meandering path for wind selection is formed is provided, and the left-right width dimension of the said air-path formation duct body is set rather than the left-right width dimension of the said grain discharge conveyor. Since the dust suction port is formed so as to face the wind selection outlet side of the grain repulsion guide plate, the dust suction port is formed on the upper side of the grain flowing down the meandering passage for wind selection. Can be removed efficiently from the upper side of the grain flow, reducing the amount of dust or dust scattered at the grain filling place (the place where the soot bag is installed) on the downstream side of the wind selection meander passage it can.

  According to invention of Claim 3, the filling hopper for throwing a grain into the straw bag of the said receiving part is provided in the exit side of the said wind selection meander path, and the said grain via the said wind selection meander path Since the filling hopper communicates with the outlet of the grain discharge conveyor, the bag can be easily replaced by the temporary storage function of the filling hopper. A wind selection outside air intake port can be easily formed on the outlet side of the wind selection meandering passage, the amount of outside air intake for wind selection sucked from the bag mounting portion of the filling hopper can be reduced, and a grain filling operation into the bag Can be improved.

  According to the fourth aspect of the present invention, an air passage forming duct body in which the wind selection meandering passage is formed is provided, and a suction fan device for sucking and discharging dust is provided at a connecting portion between the grain discharge conveyor and the air passage forming duct body. Is arranged so that the dust suction side of the suction fan device communicates with the dust suction port of the wind-selective meandering passage. While being connected to an inverted V-shape, the front and rear width dimensions of the grain discharge conveyor and the air passage forming duct body can be made compact, and below the reverse V-shaped connecting portion of the grain discharge conveyor and the air path forming duct body. The suction fan device can be installed compactly.

It is a left view of the ordinary combine which shows 1st Embodiment of this invention. It is a top view of the combine. It is a right view of the combine. FIG. 2 is an enlarged explanatory view of FIG. 1. FIG. 3 is an enlarged explanatory view of FIG. 2. FIG. 4 is an enlarged explanatory view of FIG. 3. It is a perspective view of the traveling machine body seen from the left rear. It is an expansion explanatory view of FIG. It is a perspective view of the traveling body viewed from the right front. FIG. 10 is an enlarged explanatory view of FIG. 9. It is a drive system diagram of a normal type combine. It is a hydraulic circuit diagram of a normal type combine. It is right side explanatory drawing which shows the drive transmission part of an engine. It is expansion explanatory drawing of FIG. It is right side sectional drawing of a threshing part. It is a perspective view of the grain extraction part seen from the left rear. It is a left view of a grain extraction part. It is expansion explanatory drawing of FIG. It is a perspective view of the engine and grain extraction part seen from the right rear. FIG. 20 is an enlarged explanatory diagram of FIG. 19. It is a perspective view which shows the modification of the grain extraction part seen from the left side rear. It is a left side expanded explanatory view which shows the modification of a crawler belt.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described with reference to the drawings (FIGS. 1 to 20) applied to an ordinary combine. First, the general structure of a general combine will be described with reference to FIGS. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side.

  As shown in FIGS. 1 to 6, the ordinary combine in the embodiment includes a traveling machine body 1 supported by a pair of left and right crawler belts 2 made of rubber crawlers as a traveling portion. At the front part of the traveling machine body 1, a harvesting part 3 that is taken in while harvesting uncut grain cereal such as rice (or wheat) is mounted by a single-acting lifting hydraulic cylinder 4 so as to be adjustable up and down.

  A threshing unit 9 for threshing the harvested cereal meal supplied from the harvesting unit 3 is mounted on the front upper surface of the traveling machine body 1. Inside the threshing unit 9, a handling cylinder 21 is disposed as a cereal threshing rotor described later. On the right side of the rear part of the traveling machine body 1, a driving operation unit 5 that is operated by an operator while walking is mounted. An engine 7 as a power source for each part of the combine is disposed in the central part of the traveling machine body 1. On the rear left side of the traveling machine body 1 (on the left side of the driving operation unit 5), there is arranged a hook receiving unit 6 for taking the grain from the threshing unit 9. The grain in the threshing part 9 is carried out by the grain discharge conveyor 8 toward the bowl receiving part 6. An air passage forming duct body 10 serving as a grain sorting unit for sorting out cereals is provided at the feed terminal of the grain discharge conveyor 8 in a low posture before and after high posture.

  The mowing unit 3 includes a feeder house 11 that communicates with the handling port supply unit at the front part of the threshing unit 9 and a horizontally long bucket-like grain header 12 that is provided continuously at the front end of the feeder house 11. A scraping auger 13 (platform auger) is rotatably supported in the grain header 12. A take-up reel 14 with a tine bar is disposed above the front portion of the take-up auger 13. A clipper-shaped cutting blade 15 is disposed in front of the grain header 12. Left and right weed bodies 16 are provided to project from the left and right sides of the front part of the grain header 12. In addition, a supply conveyor 17 is installed in the feeder house 11. The lower surface portion of the feeder house 11 and the front end portion of the traveling machine body 1 are connected via a lifting hydraulic cylinder 4, and the cutting portion 3 moves up and down using a cutting input shaft 18 (feeder house conveyor shaft) described later as a lifting fulcrum. The hydraulic cylinder 4 is moved up and down.

With the above configuration, the tip of the uncut grain culm between the left and right weed bodies 16 is scraped by the scraping reel 14, and the uncut grain culm is trimmed by the cutting blade 15. The harvested cereal grains are collected near the entrance of the feeder house 11 near the center of the left and right width of the grain header 12. The total amount of the harvested cereal meal of the grain header 12 is the supply conveyor 1 in the feeder house 11.
7 is configured to be fed into the inside of the handling chamber 22 from a handling port supply plate 9a provided on the left side of the threshing portion 9.

  Moreover, as shown in FIGS. 4-6, the handling cylinder 21 is rotatably provided in the handling chamber 22 of the threshing part 9. FIG. A handling cylinder 21 is pivotally supported on a handling cylinder shaft 20 extended in the left-right direction of the traveling machine body 1. On the lower side of the handling cylinder 21, a receiving net 24 for allowing the grains to leak is stretched. In addition, a handling port supply plate 9 a that communicates with the cereal feed end side of the supply conveyor 17 is formed in the lower left portion of the handling chamber 22, while a dust outlet 23 is formed in the lower right portion of the handling chamber 22. . That is, a horizontal handling posture cylinder 21 is mounted on the front part of the traveling machine body 1 and the feeder house 11 is disposed at the left end of the threshing part 9, and the feeder house 11 that is long in the front-rear direction is provided. It is comprised so that the moving direction of the harvested cereal meal in the threshing part 9 of the horizontal placement posture may be changed to the orthogonal direction.

  With the above-described configuration, the harvested cereal mash introduced from the handling port supply plate 9 a by the supply conveyor 17 is conveyed from the left side to the right side of the traveling machine body 1 by the rotation of the handling cylinder 21, while the handling cylinder 21 and the receiving net 24. And kneaded in between. The threshing of grains or the like smaller than the mesh of the receiving net 24 leaks from the receiving net 24. The sawdust or the like that does not leak from the receiving net 24 is discharged from the dust outlet 23 on the lower right side of the handling chamber 22 to the cut surface of the farm field through the upper surface side of the right crawler belt 2 by the conveying action of the handling cylinder 21. It is configured.

  Moreover, as shown in FIGS. 4-6, the air-path formation duct body arrange | positioned in the feed terminal part of the grain discharge conveyor 8 of the grain discharge conveyor 8 of the front low back high position as a grain classification | selection part which performs the selection of threshing. 10 and a suction fan device 34 that sucks and exhausts dust by introducing the sorting air into the air passage forming duct body 10. A grain takeout conveyor 36 is placed horizontally below the receiving net 24, and the threshing that has been threshed by the handling cylinder 21 and leaked from the receiving net 24 is made to pass through the grain takeout conveyor 36 and the grain discharge conveyor 8. The cereal grains carried into the air passage forming duct body 10 through the air passage forming duct body 10 are converted into heavy grains, light shavings, and the like by the air sorting action of the suction fan device 34. It is configured to be sorted.

  On the other hand, on the left side of the threshing unit 9, the grain discharge conveyor 8 is extended between the threshing unit 9 and the bowl receiving unit 6 in a front low and high posture. The feed start end side of the front end portion of the grain discharge conveyor 8 is connected to the feed end side of the left end portion of the grain take-out conveyor 36. A grain take-out conveyor 36 is provided inside the V-shaped grain take-out bottom of the threshing section 9. The grains that have leaked from the receiving net 24 to the grain takeout conveyor 36 are transferred from the left end of the grain takeout conveyor 36 to the front end of the grain discharge conveyor 8, and the air passage forming duct on the rear end side of the grain discharge conveyor 8. It is configured to be transferred from the body 10 to the bag receiving unit 6 and collected in the bag 37 of the bag receiving unit 6.

  That is, the rod receiving portion 6 is connected to the left rear end portion of the traveling machine body 1 via the stand support frame 38a, and the rod mount attached to the left rear end portion of the traveling vehicle body 1 via the column frame body 39. An arm body 39a is provided. Further, the air path forming duct body 10 is supported on the upper end side of the support frame body 39, and the filling hopper 19 is provided at the grain outlet of the air path forming duct body 10, and the straw bag 37 is provided on the saddle receiving arm body 39a. The opening of the straw bag 37 is attached to the hanging and filling hopper 19, and the grains discharged from the filling hopper 19 are filled into the straw bag 37.

On the other hand, as shown in FIGS. 4 to 6, a steering column 41 is disposed in the driving operation unit 5. The steering column 41 is used to drive or stop the left and right side clutch levers 43 and 44 that change the course of the traveling machine body 1, the traveling speed change lever 45 that switches the traveling speed of the traveling machine body 1, and the reaping part 3 or the threshing part 9. A working clutch lever 46, a cutting lift lever 47 for lifting and lowering the cutting unit 3, and a parking brake lever 48 are arranged. In addition, a walking handle 49 is protruded rearward on the rear side of the steering column 41, and the accelerator lever 40 is attached to the left grip portion of the walking handle 49. Left and right side clutch levers 43, 44, a mowing lift lever 47, and a travel speed change lever 45 are arranged in parallel in order from the right side on the upper surface side of the control column 41, and the operation position of the travel speed change lever 45 on the inner side of the body is set. It is formed higher than the operation position of the other levers 43, 44, 46, 47, and the traveling speed change lever 45 that is operated less frequently during the harvesting operation that moves the field at a substantially constant speed is supported on the inner side of the machine body. The side clutch levers 43 and 44 and the mowing lift lever 47, which are frequently operated during work, are configured to be supported on the outer side of the machine body.

  As shown in FIGS. 7 and 8, a driver seat 42 on which an operator sits is detachably disposed behind the control column 41. A driver's seat bracket body 111 is provided at the right rear end portion of the traveling machine body 1, and the front end portion of the driver's seat frame 112 is detachably bolted to the driver seat bracket body 111. Further, the rear end side of the driver's seat frame 112 extends substantially horizontally from the right rear end of the upper fuselage frame 1b to the rear, and the driver seat 42 is attached to the rear end portion of the driver's seat frame 112. A driver's seat 42 is arranged behind the driver's operation unit 5 via the driver so that an operator sitting on the driver's seat 42 can operate the levers 43, 44, 45, 46, 47, 48, etc. of the driver's operating unit 5. doing.

  Further, as shown in FIGS. 7 and 8, a foot guard body 114 disposed between the feet of the operator sitting on the driver's seat 42 and the rear end of the right crawler belt 2 is provided. The guard body support frame 115 is extended downward from the lower surface side of the driver seat bracket body 111, the foot guard body 114 is fixed to the guard body support frame 115, and the operator's feet are in contact with the right crawler belt 2. The foot guard body 114 is configured to block. In addition, the footrest frame 112a is extended downward from the front and rear intermediate portion of the driver seat frame 112, the footrest 113 is fixed to the lower end portion of the footrest frame 112a, and the operator seated on the driver seat 42 The foot is configured to be placed on the footrest 113.

  Further, as shown in FIGS. 7 to 10, the left and right front support legs 32 and the rear support legs 33 protrude downward from the lower surface side of the traveling machine body 1, and the left and right support leg bodies 32, 33 are provided on the lower surface side of the traveling machine body 1. The left and right track frames 50 are arranged via the. The track frame 50 has a drive sprocket 51 that transmits the power of the engine 7 to the crawler belt 2, a tension roller 52 that is supported via a tension mechanism 53 that maintains the tension of the crawler belt 2, and the ground side of the crawler belt 2 is held in a grounded state. A plurality of track rollers 54 are provided. The front side of the crawler belt 2 is supported by the tension roller 52, the rear side of the crawler belt 2 is supported by the drive sprocket 51, the ground side of the crawler belt 2 is supported in a horizontal posture by the track roller 54, and the non-ground side of the crawler belt 2 is It is configured to support a low rear and high posture.

  Next, the drive structure of the combine will be described with reference to FIGS. As shown in FIGS. 11 and 12, the transmission case 63 is provided with a hydraulic continuously variable transmission 64 for traveling speed change, in which the traveling hydraulic pump 30 and the traveling hydraulic motor 31 are built. The engine 7 is mounted on the center upper surface of the traveling machine body 1, and a mission case 63 is disposed at the rear of the traveling machine body 1 behind the engine 7. Further, a travel drive pulley 69 on the engine output shaft 65 projecting leftward from the engine 7 and a shift input pulley 70 on the speed change input shaft 66 projecting leftward from the transmission case 63 are connected to the front travel output belt 67a. And the rear traveling output belt 67b.

  Further, the front traveling output belt 67a is tensioned by a tension roller type traveling clutch 68, and power is transmitted from the engine 7 to the transmission case 63 to drive the left and right crawler belts 2. As shown in FIGS. 8 and 14, an input pulley fan 70a is fixed to the outer surface of the left side of the transmission input pulley 70, and the hydraulic continuously variable transmission 64 is cooled by the input pulley fan 70a. .

In addition, as shown in FIGS. 10, 13, and 14, the intermediate frame 131 is erected in a backward inclined posture on the traveling machine body 1, and the left intermediate pulley 133 is connected to the upper end side of the intermediate frame 131 via the intermediate shaft 132. The right intermediate pulley 134 is pivotally supported so as to be integrally rotatable, and the front traveling output belt 67a is hung between the traveling drive pulley 69 and the left intermediate pulley 133 via the traveling clutch 68, and the right intermediate pulley 134 and the right intermediate pulley 134 are shifted. A rear traveling output belt 67b is wound around the input pulley 70. The transmission case 63 on the rear side of the engine 7 is disposed closer to the right side of the body with respect to the center line of the longitudinal direction of the body, and the mounting position of the transmission input pulley 70 is formed closer to the center of the traveling body 1 than the mounting position of the traveling drive pulley 69. .

  The input pulley fan 70a supported by the transmission input pulley 70 on the rear end side of the rear traveling output belt 67b is disposed on the rear side of the front traveling output belt 67a. A hydraulic continuously variable transmission 64 can be integrally mounted and fixed on the upper part of the transmission case 63 between the left and right crawler tracks 2 behind the engine 7, and the heavy-duty engine 7 and the transmission case 63 are connected to the center of the left and right width of the body (front and rear of the body). The weight balance in the left-right direction of the aircraft is well formed.

  As shown in FIG. 7 to FIG. 11, FIG. 13, and FIG. 14, a counter shaft 72 for driving the cutting unit 3 and the handling cylinder 21 is provided. A counter shaft 72 is rotatably provided on the upper surface side of the traveling machine body 1 (upper machine frame 1b) via the left bearing body 71a and the right bearing body 71b. A threshing drive pulley 57 on the output shaft 65 protruding leftward from the engine 7 and a counter shaft pulley 58 at the left end of the counter shaft 72 are connected via a threshing drive belt 59. The threshing drive belt 59 is tensioned by the tension roller type work clutch 60, and power is transmitted from the engine 7 to the counter shaft 72.

  A counter shaft sprocket 73 is pivotally supported at the right end portion of the counter shaft 72. A countershaft sprocket 73 and a handlebar shaft input sprocket 74 at the right end of the handlebar shaft 20 are connected by a threshing drive chain 75, and the handlebar cylinder 21 is driven via the countershaft 72. Further, a grain delivery sprocket 76 is pivotally supported on the right end of the barrel 20. The grain delivery sprocket 76 and the delivery input sprocket 77 at the right end of the grain takeout conveyor 36 are connected by a delivery drive chain 78, and the grain takeout conveyor 36 is driven via the counter shaft 72. Yes.

  In addition, the feed start end side of the grain discharge conveyor 8 is connected to the left end of the grain take-out conveyor 36 via a grain discharge sprocket 79. The grain discharge conveyor 8 has an endless belt-like grain discharge chain 8a and a plurality of grain discharge plates 8b arranged at equal intervals on the grain discharge chain 8a. The grain discharge chain 8a is hung around the grain discharge sprocket 79, the grain extraction conveyor 36 and the grain discharge conveyor 8 are driven in conjunction, and a plurality of grains are extracted from the left end of the grain extraction conveyor 36. It is comprised so that it may convey toward the air path formation duct body 10 by the grain discharge plate body 8b.

  On the other hand, the fan drive pulley 82 on the left end of the counter shaft 72 and the blower fan pulley 83 on the fan shaft 34 a of the suction fan device 34 are connected by a fan drive belt 84, and suction and discharge of the handling cylinder 21 and the suction fan device 34 are performed. The dust fan 34b is configured to be driven in conjunction. By operating the work clutch 60 of the work clutch lever 46 disposed on the left side of the control column 41, each part of the threshing part 9 (the handling cylinder 21, each conveyor 8, 36, and the dust suction / discharge fan 34b) is set at a constant rotational speed. Is driving.

Next, the drive structure of the cutting unit 3 will be described with reference to FIGS. 1 to 3, 7, 8, and 11. A handling shaft output sprocket 85 provided at the left end portion of the handling shaft 20 and a cutting input sprocket 86 provided at the left end portion of the cutting input shaft 18 which is a lifting fulcrum of the cutting portion 3 are connected by a cutting input chain 87. The barrel 21 and the supply conveyor 17 are driven in conjunction with each other via a cutting input shaft 18 that supports the entire cutting unit 3 so as to be movable up and down. In addition, a header drive shaft 91 is provided on the rear surface side of the grain header 12 left side of the cutting unit 3 via a pair of header drive bearing bodies 141. At the right end of the header drive shaft 91, header drive sprockets 88 and 89 and a header drive chain 90 are provided.
The left end of the cutting input shaft 18 is connected via

  Further, the grain header 12 is provided with a scraping shaft 93 that pivotally supports the scraping auger 13. The left end portion of the header drive shaft 91 is connected to the left end portion of the take-in shaft 93 via a take-in drive chain 92 and take-in drive sprockets 94 and 95. The scraping auger 13 is driven via the cutting input shaft 18 and the header drive shaft 91.

  Further, as shown in FIGS. 1 to 3, the base end portion of the reel support frame 151 is fixed to the upper surface of the grain header 12. In addition, a reel shaft 96 that pivotally supports the take-up reel 14 is provided, and the left and right end portions of the reel shaft 96 are pivotally supported at the distal ends of the left and right reel support frames 151. The scraping reel 14 is supported on the upper surface side of the grain header 12 via left and right reel support frames 151. Reel support arms 155 that support the intermediate portions of the left and right reel support frames 151 are provided on the left and right side surfaces of the grain header 12.

  Further, a reel drive shaft 153 is provided on the right side surface portion of the grain header 12, the reel drive sprocket 98 and the reel drive pulley 161 are supported on the reel drive shaft 153, and the reel drive sprocket 98 and the reel drive pulley 161 are integrated. It is stuck to. A reel drive chain 97 is wound around a reel input sprocket 99 and a reel drive sprocket 98 provided at the right end of the take-in shaft 93. A reel drive belt 164 is wound around a reel driven pulley 163 and a reel drive pulley 161 provided at the right end of the reel shaft 96.

  In addition, a reel drive tension pulley 166 is pivotally supported at the tip of the reel drive tension arm 165 so as to be rotatable. A reel shaft 96 is linked to the header drive shaft 91 via a reel drive chain 97 and a reel drive belt 164. The reel driving shaft 153 supports the base end of the reel driving tension arm 165, the reel driving belt 164 is pressed against the reel driving tension pulley 166 by the reel driving tension spring force, and the reel driving tension pulley 166 causes the reel driving belt to rotate. Supports 164 in tension. In addition, a scraping drive chain 92 is installed in the chain cover body 169 on the left side of the cutting unit 3, and a reel driving belt 164 is installed in the belt cover body 170 on the right side of the cutting unit 3.

  Further, the cutting blade 15 is connected to the right end portion of the driving shaft 93 via the cutting blade drive crank mechanism 100. By the operation of the work clutch lever 46 with the work clutch 60, each part of the cutting unit 3 (the supply conveyor 17, the take-up auger 13, the take-up reel 14, and the cutting blade 15) is driven, and the uncut rice in the field It is configured to continuously cut the tip side of the reed. The cutting blade drive crank mechanism 100 is installed in the cutting blade drive cover body 171 on the right side of the cutting unit 3.

  Next, the hydraulic circuit structure of the combine will be described with reference to FIG. As shown in FIG. 12, the traveling hydraulic pump 30 and the traveling hydraulic motor 31 of the hydraulic continuously variable transmission 64 for traveling speed change are connected by a closed loop hydraulic circuit 211 and a charge pump 212 that supplies hydraulic oil to the closed loop hydraulic circuit 211. Is provided. In addition, an elevating hydraulic circuit 216 having an elevating valve 213 is provided, and a working pump 215 for moving the elevating hydraulic cylinder 4 up and moving the elevating valve 213 by operating the cutting elevating lever 47 is provided. The charge pump 212 and the work pump 215 are configured to be driven in conjunction with the traveling hydraulic pump 30 via the transmission input shaft 66.

With the above configuration, the hydraulic oil in the hydraulic oil tank 55 is pumped to the hydraulic continuously variable transmission 64 or the lifting hydraulic circuit 216 by the charge pump 212 and the work pump 215, and traveled by the traveling hydraulic pump 30. While the hydraulic motor 31 is actuated to output continuously variable speed, the working pump 215 moves up and down the hydraulic cylinder 4 to raise and lower the cutting unit 3. In addition, the hydraulic oil returns to the hydraulic oil tank 55 from the hydraulic continuously variable transmission 64 or the lift hydraulic circuit 216 via the oil cooler 217. Oil cooler 217
Air cooling is performed by a cooler fan 218 provided on the intermediate shaft 132 so that the hydraulic oil in the hydraulic oil tank 55 is maintained at a predetermined temperature or lower.

  Next, the structure of the traveling machine body 1 will be described with reference to FIGS. 7 to 10, 13, and 14. The traveling machine body 1 is configured in a vertical multistage eaves structure by the lower machine body frame 1a, the upper machine body frame 1b, and the support frame 1c. The left and right track frames 50 are fixed to the lower surface side of the lower body frame 1 a via the front support legs 32 and the rear support legs 33, and the left and right crawler belts 2 are mounted via the left and right track frames 50. Further, the lower surface of the engine 7 is connected to the mounting portion on the upper surface of the upper body frame 1b, and the engine 7 is mounted on the upper body frame 1b. The engine 7 is a traveling body 1 between the driving operation unit 5 and the saddle receiving unit 6. Located in the center.

  That is, the engine 7 is arranged at the center of the left and right width of the traveling machine body 1, and the driving operation unit 5 is arranged at the rear part of the upper body frame 1 b on the right side of the engine 7 (rear right side of the traveling machine body 1) centering on the engine 7. The saddle receiving portion 6 is disposed at the rear of the upper body frame 1b on the left side of the engine 7 (the rear left side of the traveling body 1), and the battery 56 is disposed on the right upper surface of the upper body frame 1b on which the engine 7 is mounted. It arrange | positions and it is comprised so that the battery 56 may be utilized for the starting power supply of the engine 7, etc.

  On the other hand, the front end side of the lower fuselage frame 1a extends forward from the front end side of the upper fuselage frame 1b, and the bottom portion of the threshing portion 9 is placed on the upper surface of the front end side of the lower fuselage frame 1a. The engine 7 is installed on the upper surface of the upper body frame 1b on the rear side of the threshing part 9, and the upper surface height of the threshing part 9 and the height of the upper surface of the engine 7 are made to coincide with each other. An installation surface (upper surface of the lower machine frame 1a) of the threshing portion 9 is formed lower than the upper machine frame 1b (upper surface). A handling port supply plate 9 a is arranged at a low position on the left front part of the threshing unit 9, and a handling port 9 b (cutting grain culm inlet) of the threshing unit 9 is configured at a low position of the traveling machine body 1.

  In addition, the lifting hydraulic cylinder 4 is attached to the front end of the lower fuselage frame 1a, and the hydraulic oil tank 55 is disposed between the front end of the upper fuselage frame 1b (the rear surface of the threshing portion 9) and the lower fuselage frame 1a, and the lifting hydraulic pressure is increased. The hydraulic oil such as the cylinder 4 is configured to be stored in the hydraulic oil tank 55.

  On the other hand, the rear ends of the lower body frame 1a are connected to the rear ends of the left and right track frames 50 by the left and right rear support legs 33, and the upper ends of the left and right rear support legs 33 are extended toward the rear upper side of the lower body frame 1a. The left and right axle cases 63a on both sides of the transmission case 63 are detachably supported on the upper ends of the left and right rear support legs 33, and the rear end side of the upper fuselage frame 1b is located behind the rear end side of the lower fuselage frame 1a. The upper end side of the transmission case 63 is detachably supported on the rear end side of the upper body frame 1b via the upper connecting body 62. The upper end side of the rear support leg 33 and the upper body frame 1b The mission case 63 is disposed in a backward inclined posture on the rear end side.

  The rear end portions of the left and right crawler belts 2 are stretched over the left and right axle cases 63 a on the lower end side of the transmission case 63 via the left and right drive sprockets 51. That is, the drive sprocket 51 is supported on the upper end side of the rear support leg 33 via the left and right axle cases 63a, and the crawler belt 2 is formed between the tension roller 52 at the front end of the track frame 50 and the drive sprocket 51 on the upper end side of the rear support leg 33. The non-grounding side is stretched, and the non-grounding side of the crawler belt 2 is supported in a front low rear high posture in which the crawler belt 2 is inclined forward and downward.

On the other hand, a mission protection frame 116 for bolting both ends to the right rear end portion and the left axle case 63a of the upper fuselage frame 1b is provided. The mission protection frame 116 surrounds the rear side of the mission case 63, and the mission protection frame. A mission protection cover 117 is attached to 116, and the upper side and the rear side of the hydraulic continuously variable transmission 64 above the mission case 63 are covered with the mission protection cover 117.

  A counter shaft 72 is installed in a horizontal posture above the upper body frame 1b at the front of the traveling machine body 1. Further, a side plate support frame 145 and an engine side plate body 146 are erected on the upper left side of the upper body frame 1b, and the side plate support frame 145 and the engine side plate body 146 are connected and fixed, and the threshing tension arm 147 base side of the side plate support frame 145 is provided. The working clutch 60 is disposed on the tip side of the threshing tension arm 147 extended forward, the threshing driving belt 59 is stretched via the working clutch 60, and the counter shaft 72 is connected to the output shaft 65 of the engine 7. ing.

  The fan case 29 of the suction fan device 34 is fixed to the support frame body 39, the suction fan device 34 is disposed on the left side of the engine side plate 146 on the left side of the engine, and the suction fan is provided on the left side of the engine 7 via the engine side plate 146. A device 34 is provided. The suction fan device 34 is configured to suck warm air around the engine 7 through the engine side plate 146.

  The travel tension arm 149 on which the travel clutch 68 is supported is supported by the intermediate frame 131, and the threshing drive belt 59, the front travel output belt 67a, the rear travel output belt 67b, and the fan drive belt 84 are disposed. A belt cover body 183 is stretched on the left side of the engine 7. The upper surface wall portion of the belt cover body 183 extends in the front-rear direction along the upper surface side of each of the belts 59, 67a, 67b, 84.

  A threshing drive belt 59 that erects an engine side plate 146 on the front side of the side plate support frame 145 and extends in the front-rear direction on the left side of the engine 7, a front travel output belt 67a, a rear travel output belt 67b, a fan The upper surface side and the left side surface side of each of the drive belts 84 are closed by the left side wall portion and the upper surface wall portion of the engine side plate body 146 and the belt cover body 183, and are covered by the engine side plate body 146 and the belt cover body 183. The outside air in the installation spaces of the belts 59, 67 a, 67 b, 84 is configured to be supplied to the oil cooler 217 via the cooler fan 218.

  With the above-described configuration, the engine side plate 146 and the engine side plate 146 are separated from a place where relatively less dust is present in the opening on the lower surface side of the engine side plate 146 and the belt cover body 183 (near the upper body frame 1b installation portion or the engine 7 placement portion). Outside air is sucked into the space covered by the belt cover body 183, and the outside air inside the space can be supplied to the oil cooler 217 by the cooler fan 218. Therefore, air with relatively little dust such as soot can be supplied to the oil cooler 217 as cooling air.

  Further, as shown in FIGS. 4 to 6 and the like, the heel support 38 is disposed at the rear portion of the left crawler belt 2, the heel loading port 19a of the filling hopper 19 is disposed above the heel receiving table 38, and A bag 37 is attached and the bag 37 is filled with bag. The straw bag 37 filled with straw is dropped onto the field, and empty straw bags 37 are sequentially attached to the straw input port 19a, and are continuously carried out from the grain discharge conveyor 8 through the air duct forming duct body 10. A plurality of koji bags 37 can be filled with koji (grain).

  Next, as shown in FIGS. 4 to 7, 13, 15, and the like, the handling cylinder 21 is separated from the four round pipe cylinder frames 21 a arranged on the same circumference and the cylinder frame 21 a at equal intervals. It has a large number of V-shaped teeth 21b that are erected in an orientation, and a dust exhaust blade plate 21c that is erected on the outer peripheral surface of the right end of the trunk frame 21a that faces the dust outlet 23. Both end portions of each barrel frame 21a are fixed to the outer periphery of the disc-shaped left and right side plate bodies 21d of the handle barrel 21, and both V-shaped end portions of the handle teeth 21b are fixed to the barrel frame 21a by welding.

  In addition, a cross-section end face installed in parallel on the front upper surface side of the traveling machine body 1 in the left-right direction is provided with a front frame body 121 having an inverted V shape (saddle shape) and a cross-section end face having an L-shaped rear frame body 122. A support frame in which a front frame body 121 having an inverted V-shaped cross section (weld shape) is welded and fixed to the front end portion of the lower body frame 1a (running body 1) and the front end portion of the upper body frame 1b is integrally connected. A rear frame 122 having an L-shaped cross-section is welded and fixed to the upper end of the frame 1c (the traveling machine body 1).

  The lower end of the left and right threshing mounts 128 are welded and fixed to the front end portion of the lower body frame 1a, and the lower surface of the front frame body 121 is welded and fixed to the upper ends of the left and right threshing mounts 128. A lifting hydraulic cylinder 4 is attached. The threshing mount 128 is formed shorter than the support frame 1c, and the support height of the rear frame body 122 is higher than the support height of the front frame body 121.

  A front frame 121 having an inverted V-shaped (∧-shaped) front frame 121 and a front horizontal frame 123 having an inverted V-shaped (∧-shaped) sectional end surface is detachably combined from above. The front horizontal frame body 123 is detachably fastened to the body 121 with a bolt 125, and the rear cross frame end surface is attached to the rear frame body 122 and the rear horizontal frame body 124 is attached to and detached from the upper side. The rear lateral frame body 124 is fastened to the rear frame body 122 with bolts 126.

  The reverse V-shaped bottom surface portion (front horizontal cross frame 123) of the threshing portion 9 is fixed to the front frame body 121 whose cross-section end surface is reverse V-shaped, and the rear frame body 122 whose cross-section end surface is L-shaped. The L-shaped rear part (rear horizontal frame body 124) at the rear part of the threshing part 9 is fixed to the front frame body 121 and the rear frame body 122 so that the bottom side of the threshing part 9 is detachable from above. The grain extraction conveyor 36 is disposed on the grain extraction basket 25 at the bottom of the threshing section 9, and the front frame body 121 is joined to the outer surface of the grain extraction basket 25 via the front horizontal frame 123. I support it.

  Next, with reference to FIGS. 16 to 20, the structure of the air duct forming duct body 10 (the grain sorting unit) and the suction fan device 34 for grain sorting will be described. As shown in FIGS. 16 and 17, the fan case 29 is detachably fixed to the front surface side of the support frame body 39 via a suction fan mounting base 221, and the suction fan device 34 is supported on the front surface side of the support frame body 39. . The air passage forming duct body 10 is detachably fixed to the rear upper end portion of the support frame body 39 via the duct body mounting base 223, and the grain discharge conveyor 8 feed end point is fed to the sorting inlet 10a of the air passage forming duct body 10. The discharge port 8c is bonded and fixed. A wind selection meandering passage 231 is formed inside the air passage forming duct body 10, and a filling hopper 19 for introducing grains into the straw bag 37 of the catching portion 6 is provided on the outlet side of the wind selection meandering passage 231. The filling hopper 19 is configured to communicate with the dispensing port 8 c of the grain discharge conveyor 8 through the selection meandering passage 231.

  That is, the filling hopper 19 is joined and fixed to the sorting outlet 10b of the air passage forming duct body 10, and the air passage forming duct body 10 and the filling hopper 19 are connected in an inverted V shape to the feed terminal of the grain discharge conveyor 8. A suction fan device 34 is provided below the inverted V-shaped connecting portion of the grain discharge conveyor 8 and the air passage forming duct body 10. A suction fan device 34 is provided in the vicinity of the feed end portion of the grain discharge conveyor 8 and the connection portion of the air passage forming duct body 10, and the grains taken out via the grain discharge conveyor 8 are sucked by the suction fan device 34. It is configured to wind-select.

  As shown in FIGS. 16 to 20, the sorting dust collection duct 222 is provided on the exhaust side of the fan case 29, the sorting dust collection duct 222 is extended downward from the fan case 29, and the sorting dust collection duct 222 has a lower end side. Is opened to the outside of the left side of the traveling machine body 1. In addition, left and right suction ducts 224 are disposed on the left and right sides of the fan case 29 in the suction fan device 34, and the dust collection duct 225 is joined and fixed to the dust suction side of the left and right suction ducts 224.

  That is, the engine 7 is mounted on the rear side of the threshing portion 9 in the horizontal position where the handling cylinder 21 is supported sideways, and the suction fan device 34 is juxtaposed on the left side of the engine 7, and the front, rear, and rear height grains. The dust collection duct 225 is arranged along the lower surface side of the grain discharge conveyor 8 feed terminal, and the dust collection duct 225 is extended from the left and right suction ducts 224 along the lower surface side of the grain discharge conveyor 8 to collect the dust. The left and right suction ducts 224 are communicated with the dust suction port 10c of the air path forming duct body 10 via the duct 225, and the left and right width dimensions of the air path forming duct body 10 are formed larger than the left and right width dimensions of the grain discharge conveyor 8. The suction fan device 34 for sucking and discharging dust is disposed at the connecting portion between the grain discharge conveyor 8 and the air passage forming duct body 10, and the dust of the suction fan device 34 is placed in the dust suction port 10 c of the meandering passage 231 for wind selection. Suction side (collection It is configured so as to communicate the suction side) of the duct 225.

  As shown in FIGS. 17 and 18, a wind selection outside air intake port 10 d is formed above the selection outlet 10 b of the wind selection meander passage 231, while a suction control valve 232 is provided on the suction side (dust suction port 10 c) of the dust collection duct 225. Install. A suction amount adjusting port 233 is opened on the suction side upper surface of the dust collection duct 225. The intake side opening of the dust collection duct 225 facing the dust suction port 10c is opened and closed by a suction control valve 232, and the amount of outside air intake for wind selection (the dust suction force of the dust suction port 10c) taken in from the outside air intake port 10d for wind selection is set. It is configured to adjust.

  With the above configuration, when the dust suction port 10c is closed by the suction control valve 232, the amount of wind selection outside air taken in from the wind selection outside air intake port 10d is reduced, and the dust suction force of the dust suction port 10c is weakened. On the other hand, when the dust suction port 10c is largely opened by the suction control valve 232, the amount of wind selection outside air taken in from the wind selection outside air intake port 10d increases, and the dust suction force of the dust suction port 10c increases.

  As shown in FIGS. 1, 2, and 16 to 20, the cutting unit 3 having the cutting blade 15, the threshing unit 9 having the handling cylinder 21, and the traveling machine body 1 in which the engine 7 is provided behind the threshing unit 9, In the combine provided with the grain discharge conveyor 8 which picks up the grain from the threshing part 9, and the suction fan device 34 which wind-selects the grain taken out through the grain discharge conveyor 8, the feed terminal part of the grain discharge conveyor 8 and the selection The suction fan device 34 is provided in the vicinity of the connecting portion of the air passage forming duct body 10 for forming the air passage, and the left and right suction ducts 224 are disposed on both sides of the fan case 29 in the suction fan device 34. The left and right suction ducts 224 communicate with the dust suction port 10c. Therefore, the suction fan device 34 can be utilized as a support member for the connecting portion between the grain discharge conveyor 8 and the air passage forming duct body 10, while ensuring the connection strength between the grain discharge conveyor 8 and the air passage forming duct body 10, The connection structure of the grain discharge conveyor 8 and the air passage forming duct body 10 or the attachment structure of the suction fan device 34 can be simplified. Further, the suction width of the left and right suction ducts 224 can be easily increased according to the left and right widths of the air passage forming duct body 10, and the sorting loss can be reduced by preventing erroneous suction of grains and the like. The sorting width of the body 10 can be easily secured and the sorting function can be improved.

  As shown in FIGS. 16 to 20, the air passage forming duct body 10 is connected to the feed terminal portion of the grain discharge conveyor 8 in an inverted V shape, and the inverted V shape of the grain discharge conveyor 8 and the air path forming duct body 10 is connected. A suction fan device 34 is provided below the shape connecting portion. Therefore, the front-rear and rear-height grain discharge conveyor 8 is connected to the air channel forming duct body 10 in an inverted V shape so that the front and rear width dimensions of the grain discharge conveyor 8 and the air path forming duct body 10 can be made compact. In spite of this, the sorting air passage can be formed long to improve the degree of sorting, and the suction fan device 34 can be compactly installed below the connecting portion between the grain discharge conveyor 8 and the air passage forming duct body 10. The connection structure of the grain discharge conveyor 8 and the air path forming duct body 10 can be simplified while securing the connection strength of the grain discharge conveyor 8 and the air path forming duct body 10.

As shown in FIGS. 16 to 20, left and right suction ducts 224 (dust collection ducts 225) are extended along the lower surface side of the front and rear high grain discharge conveyor 8 feed terminal portion. Therefore, the shape of the left and right suction ducts 224 can be easily adapted to the mounting position of the suction part (fan case 29) of the suction fan device 34 or the suction part (dust suction port 10c) of the air passage forming duct body 10.

  As shown in FIGS. 16 to 20, the engine 7 is mounted on the rear side of the threshing portion 9 in the horizontal posture in which the handling cylinder 21 is supported in the horizontal direction, and the suction fan device 34 is arranged in parallel on the left side of the engine 7. Yes. Therefore, the suction fan device 34 can be installed compactly in the vicinity of the engine 7, and the suction fan device 34 can be easily driven via the high rotation output portion of the engine 7. The number of components such as the drive structure of the suction fan device 34 can be easily reduced, and can be configured at low cost.

  Furthermore, the grain repelling guide plate 234 that opposes the outlet 8c (selection inlet 10a) of the grain discharge conveyor 8 inside the air passage forming duct body 10, and the grain falling from the grain repelling guide plate 234 The flow guide short plate 235 and the flow guide long plate 236 for changing the flow direction of the air flow, and the grain sorting flow plate 237 formed by the bottom plate of the air duct forming duct body 10 are provided. The slant lower end side of the grain repulsion guide plate 234 faces the upper surface side of the flow guide short plate 235, the slant lower end side of the flow guide short plate 235 faces the upper surface side of the flow guide long plate 236, and the flow guide long plate The inclined lower end side of 236 is directed to the upper surface side of the grain sorting flow-down plate 237, and a dust suction port 10c is formed on the inclined upper end side of the grain sorting flow-down plate 237, so that the sorting is performed on the inclined lower end side of the grain sorting flow-down plate 237. The filling hopper 19 is connected through the outlet 10b, and a wind selection meandering passage 231 is formed by a plurality of plates 234, 235, 236, and 237 for agitation guide.

  A grain repulsion guide plate 234 is provided so as to face the discharge port 8 c of the grain discharge conveyor 8, and a dust suction port 10 c is formed facing the wind selection outlet side of the grain repulsion guide plate 234, and the grain The meandering passage 231 for wind selection is made to communicate with the discharge port 8c of the discharge conveyor 8 through the grain repulsion guide plate 234, and the lump of grains and sawdust delivered from the discharge port 8c of the grain discharge conveyor 8 While being decomposed, the sorting air is taken into the inclined lower end side of the grain sorting flow-down plate 237 from the outside air intake 10d for wind selection, and the sorting air is supplied to the suction fan device 34 from the dust suction port 10c on the inclined upper end side of the grain sorting flow-down plate 237. So that the swarf or dust falling on the grain sorting down plate 237 is discharged to the suction fan device 34 side, and the grain falling on the grain sorting down plate 237 flows down to the filling hopper 19 side. To configure There.

  As shown in FIGS. 1, 2, and 16 to 20, the cutting unit 3 having the cutting blade 15, the threshing unit 9 having the handling cylinder 21, and the traveling machine body 1 in which the engine 7 is provided behind the threshing unit 9, In the combine which is equipped with the jar receiving part 6 which takes out a grain from the threshing part 9 via the grain discharge conveyor 8, and is filled with the grain of the threshing part 9 in the bag 37 of the cradle receiving part 6, of the grain discharge conveyor 8 A grain repulsion guide plate 234 is provided to face the discharge port 8c, and the wind selection meander passage 231 is communicated with the discharge port 8c of the grain discharge conveyor 8 via the grain repulsion guide plate 234. ing. Therefore, it can be configured at a lower cost than a structure in which a swing sorter or the like is installed, the number of components can be reduced, weight reduction or cost reduction can be easily achieved, and the combine machine structure can be configured compactly. It is possible to move while solving the lump of grains and dust falling from the outlet 8c into the wind-measuring meandering passage 231. The grain thrown out from the grain discharge conveyor 8 is repelled by the grain repulsion guide plate 234, so that it is possible to efficiently separate swarf dust or dust and the grain, and the sorting performance of the grain to be taken out to the basket receiving portion 6 is improved. Can be improved easily.

As shown in FIGS. 16 to 20, the air passage forming duct body 10 in which the wind selection meandering passage 231 is formed is provided, and the left and right width dimensions of the air passage forming duct body 10 are larger than the left and right width dimensions of the grain discharge conveyor 8. At the same time, the dust suction port 10c is formed so as to face the wind selection outlet side of the grain repulsion guide plate 234. Therefore, the dust suction port 10c is made to face the upper flow side of the grain flowing down the wind selection meander passage 231 to efficiently remove the dust or dust from the upper flow side of the grain, and the downstream side of the wind selection meander passage 231 It is possible to reduce the amount of dust or dust scattered at the grain filling place (the place where the bag is placed).

  As shown in FIGS. 16 to 20, a filling hopper 19 for putting the grain into the straw bag 37 of the basket receiving portion 6 is provided on the outlet side of the wind selection meandering passage 231, and the grain is passed through the wind selection meandering passage 231. The filling hopper 19 is configured to communicate with the discharge port 8 c of the discharge conveyor 8. Therefore, the bag 37 can be easily replaced by the temporary storage function of the filling hopper 19. An air intake port 10d for wind selection can be easily formed on the outlet side of the meandering passage 231 for wind selection, the amount of air intake for wind selection sucked from the bag mounting portion of the filling hopper 19 can be reduced, and the grains to the bag 37 Filling workability can be improved.

  As shown in FIGS. 16 to 20, an air passage forming duct body 10 in which a wind selection meandering passage 231 is formed is provided, and a suction fan device for sucking and discharging dust is provided at a connecting portion between the grain discharge conveyor 8 and the air passage forming duct body 10. 34 is arranged so that the dust suction side of the suction fan device 34 communicates with the dust suction port 10 c of the wind-selective meandering passage 231. Therefore, the front-rear and rear-high grain discharge conveyor 8 can be connected to the air channel forming duct body 10 in an inverted V shape so that the front and rear width dimensions of the grain discharge conveyor 8 and the air path forming duct body 10 can be made compact. However, the suction fan device 34 can be compactly installed below the inverted V-shaped connecting portion of the grain discharge conveyor 8 and the air passage forming duct body 10.

  Next, the engine 7 and the cooling structure of the engine 7 will be described with reference to FIGS. 5, 6, 19, and 20. The type of the engine 7 is a horizontal water-cooled four-cycle diesel engine, a fuel tank 312 having a fuel tank lid 311 is mounted on the front upper surface side of the engine 7, and a water-cooling radiator 314 having a radiator cap 313 is mounted on the rear upper surface of the engine 7. The air cleaner 315 and the exhaust silencer 316 are disposed on the rear side of the engine 7. A steering column 41 is disposed on the right rear side of the engine 7, an air cleaner 315 is located on the right side of the exhaust silencer 316, and a steering column 41 is located on the right side of the air cleaner 315. An engine starting battery 56 is placed on the upper surface of the traveling machine body 1 in front of the steering column 41 (to the right side of the engine 7).

  In addition, a cooling air intake opening 318 is formed in the upper right portion on the rear side of the engine 7, a cooling air discharge opening 319 is formed in the upper left portion on the rear side of the engine 7, and the engine cooling fan 317 is provided in the cooling air discharge opening 319. Arrange. The engine cooling fan 317 is driven through the engine output shaft 65, the cooling air is taken into the water cooling radiator 314 from the cooling air intake opening 318, and the warm air from the water cooling radiator 314 is discharged from the cooling air discharge opening 319. In addition, the water cooling radiator 314 is configured to be cooled.

  Furthermore, a polygonal box type (square box type) cooling air intake duct body 321 connected to the cooling air intake opening 318 of the engine 7 is provided, and the cooling air intake duct body 321 has a square box type duct body housing 322. The rear end side of the support frame body 325 is fixed to the front surface of the control column 41, the front end side of the support frame body 325 is extended toward the front of the control column 41, and the rectangular box type of the duct body housing 322 is formed on the upper surface side of the support frame body 325. The bottom is fixed, and the cooling air intake duct body 321 is attached to the front side of the steering column 41 via the support frame body 325.

  In addition, the rectangular box-type left side surface of the duct body housing 322 is joined to the outside of the cooling air intake opening 318 of the engine 7 via a heat-resistant sponge sealing material 323, and the duct body housing is connected to the cooling air intake opening 318 of the engine 7. The dust removal wind outlet 324 of 322 is connected. The dust removal air outlet 324 on the left side of the duct body housing 322 is connected to the cooling air intake opening 318 on the upper right side of the engine 7, and the size of the cooling air intake opening 318 of the engine 7 and the dust removal air outlet of the duct body housing 322 are connected. The size of 324 is formed to be substantially equal, and the cooling air intake opening 318 and the dust removal outlet 324 are connected.

  On the other hand, outside air intakes 326 and 327 are opened in two directions on the right side of the square box type and the back side of the square box type of the duct body housing 322, respectively. The upper surface side (operation lever 43, 44, 45, 47 mounting portion) of the control column 41 provided behind the cooling air intake duct body 321 is opposed to the outside air intake port 327 on the rear surface of the duct main body housing 322. The outside air on the right side of the airframe is taken into the duct body housing 322 from the outside air inlet 326 on the right side surface of the 322, while the outside air on the upper surface side of the steering column 41 is inside the duct body housing 322 from the outside air inlet 327 on the back surface of the duct body housing 322. It is configured to be taken in.

  In addition, a dust-proof net is stretched at the outside air inlets 326 and 327, and outside air after dust removal is taken into the duct body housing 322. During the harvesting operation, if dust or the like adheres to the dust nets of the outside air intakes 326 and 327, the operator behind the control column 41 can easily visually check the outside air intakes 326 and 327, and the state of attachment of the dust etc. can be easily achieved. It is configured so that it can be confirmed.

  As shown in FIGS. 1, 4 to 6, 19, and 20, traveling provided with a cutting part 3 having a cutting blade 15, a threshing part 9 having a handling cylinder 21, a crawler belt 2 and an engine 7 as a traveling part. In the combine which is provided with the steering column 41 which arrange | positions the body 1 and the side clutch levers 43 and 44 as a some operation lever, or the driving | running | working speed change lever 45, or the cutting raising / lowering lever 47, and supplies the cereal to the threshing part 9 from the cutting part 3 And a cooling air intake duct body 321 having a polygonal box shape to be connected to the cooling air intake opening 318 of the engine 7. The cooling air intake duct body 321 has a duct body housing 322, and the cooling air intake opening 318 of the engine 7 is provided. A dust removal outlet 324 of the duct body housing 322 is connected to the main body. Therefore, the polygonal box-shaped side surface of the cooling air intake duct body 321 can be disposed opposite to the engine 7 or the steering column 41, and the engine 7 and the steering column 41 are surrounded by the engine 7 and the steering column 41 on the trimmed upper surface of the traveling machine body 1. The cooling-air intake duct body 321 can be compactly supported in a place where there is little dust, such as the upper surface.

  As shown in FIGS. 5, 6, 19, and 20, the steering column 41 is erected on the traveling machine body 1 on the right rear side of the engine 7, and a support frame body 325 is provided on the front side of the steering column 41. A square box type cooling air intake duct body 321 is attached, and a dust removal air outlet 324 on the left side surface of the duct body housing 322 is connected to the cooling air intake opening 318 on the upper right side surface of the engine 7. Therefore, the size of the cooling air intake opening 318 of the engine 7 and the size of the dust removal air outlet 324 of the duct body housing 322 are formed to be substantially equal, and the connection structure between the cooling air intake opening 318 and the dust removal air outlet 324 is simplified. Can be configured. By utilizing the space in front of the steering column 41, the cooling air intake duct body 321 can be closely supported by the cooling air intake opening 318 of the engine 7.

  As shown in FIGS. 5, 6, 19, and 20, outside air intake ports 326 and 327 are opened in two directions on the right side and the back side of the square box type duct main body housing 322, respectively, and the cooling air intake duct body 321 is formed. A steering column 41 is provided at the rear, and an operating lever (side clutch levers 43, 44 or traveling shift lever 45 or cutting lift lever 47) mounting portion on the upper side of the steering column 41 is attached to the outside air inlet 327 on the rear surface of the duct body housing 322. It is comprised so that it may oppose. Therefore, the opening area of the outside air intake ports 326 and 327 can be formed larger than the dust removing air outlet 324 of the duct body housing 322, the outside air intake pressure of the outside air intake ports 326 and 327 can be reduced, and the outside air intake ports 326 and 327 are attached. Can reduce the amount of dust.

As shown in FIGS. 5, 6, 19, and 20, the steering column 41 is erected on the traveling machine body 1 on the right rear side of the engine 7, and a support frame body 325 is provided on the front side of the steering column 41. A rectangular box-type cooling air intake duct body 321 is attached, and left and right side clutch levers 43, 44, a mowing lift lever 47, and a travel speed change lever 45 are arranged in parallel in the left-right direction in order from the right side on the upper surface side of the control column 41. In addition, the operating position of the traveling speed change lever 45 on the inner side of the machine body is formed higher than the other levers (the side clutch levers 43 and 44 or the cutting lift lever 47). Therefore, it is possible to support the traveling speed change lever 45, which is operated less frequently during the harvesting operation that moves through the field at a substantially constant speed, on the inner side of the machine body, and the side clutch levers 43, 44 and the cutting lift lever that are also operated frequently during the harvesting operation. 47 can be supported on the outer side of the fuselage, so that an operator who sits on the driver seat 42 behind the control column 41 visually recognizes the position of the front trimming unit 3 near the outer side of the traveling model 1 and the trimming with the side clutch levers 43 and 44. The elevating lever 47 can be operated smoothly, and driving operability can be improved. In a walking harvesting operation in which an operator walks following the traveling machine body 1, the side clutch levers 43 and 44 and the cutting lift lever 47 can be easily operated from the outside of the traveling machine body 1, thereby improving the walking harvesting workability.

  FIG. 21 is a perspective view showing a modified example of the grain take-out portion viewed from the left rear side, and the air passage forming duct body 10 and the filling hopper 19 in the embodiment shown in FIG. 17 are provided as the grain take-out portion. 21, an overflow outlet 341 is provided on the outer side surface (left outer surface) of the filling hopper 19, and when the grains of the straw bag 37 are discharged from the straw input port 19 a, the straw bag 37 is filled with the grains. If maintained, the grains accumulated in the filling hopper 19 can be taken out from the overflow take-out port 341 to the spare bag 37. That is, it is possible to prevent the grains accumulated in the filling hopper 19 from moving to the suction fan device 34 side by attaching a spare straw bag 37 to the overflow outlet 341 and performing a harvesting operation. FIG. 22 is an enlarged left side explanatory view showing a modified example of the crawler belt. The front part of the track frame 50 having the structure shown in FIG. A long crawler belt 2a that is longer than the crawler belt 2 having the structure is attached, and the wetland running performance is improved as compared with the crawler belt 2 having the structure shown in FIG. Note that the wet roller running performance is further improved by increasing the diameter of the tension roller 52.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Cutting part 6 Grain receiving part 7 Engine 8 Grain discharge conveyor 9 Threshing part 10 Air channel formation duct body 15 Cutting blade 19 Filling hopper 21 Handling cylinder 34 Suction fan apparatus 37 Bag bag 231 Wind selection meander path 234 Grain Guide plate for repulsion

Claims (4)

A cutting part having a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with an engine behind the threshing part, and a hook receiving part for taking out the grain from the threshing part via a grain discharge conveyor, In the combine that fills the grain of the threshing part into the bag of the basket receiving part,
A grain repulsion guide plate is provided to face the ejection port of the grain discharge conveyor, and the wind selection meander passage is communicated with the ejection port of the grain discharge conveyor via the grain repulsion guide plate. Combines characterized by construction.   An air path forming duct body in which the meandering passage for wind selection is formed is provided, the left and right width dimension of the air path forming duct body is made larger than the left and right width dimension of the grain discharge conveyor, and the grain repulsion guide 2. The combine according to claim 1, wherein a dust suction port is formed so as to face the wind selection outlet side of the plate.   A filling hopper is provided on the outlet side of the wind-selecting meandering passage, and the filling hopper is provided at the outlet of the grain discharge conveyor via the wind-selective meandering passage. The combine according to claim 1, wherein the combine is configured to communicate with each other.   An air passage forming duct body in which the wind selection meandering passage is formed is provided, and a suction fan device for sucking and discharging dust is disposed at a connecting portion between the grain discharge conveyor and the air passage forming duct body, The combine according to claim 1, wherein the dust suction port is configured to communicate with a dust suction side of the suction fan device.

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