JP6555821B2 - Combine - Google Patents

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).

JP 2005-192525 A JP 2012-126325 A Japanese Utility Model Publication No. 62-65317

  In Patent Literature 1 to Patent Literature 3, a cooling cooler fan is attached to an intermediate shaft provided in a transmission path between an engine and a hydraulic continuously variable transmission, but this is applied to a large combine used for harvesting work in a large area of a field. The radiator for cooling the engine with water is cooled. On the other hand, in a harvesting operation in a small-area farm, a light-weight combine that allows a compact configuration of the entire machine body while ensuring the harvesting width of the cereals is used. Traveling with a hydraulic continuously variable transmission installed in the transmission case for driving the traveling unit, an oil cooler that cools the hydraulic oil of the hydraulic continuously variable transmission, and a cooling cooler fan while taking into account the downsizing of the entire combine Improvements in performance or simplification of maneuvering operations are desired. Since Patent Document 1 is a traveling unit drive structure suitable for a high-power engine, there is a structural problem such that a traveling unit drive structure suitable for a small-power engine mounted on a small and light-weight combine cannot be easily configured. is there. For example, the threshing unit is mounted on the upper surface of the traveling machine body in a horizontal orientation toward the left and right direction, the engine and the hook part are arranged behind the threshing part, and the rear left and right rear parts of the traveling machine body There is a structural problem such as a small and lightweight combine cannot be configured by arranging the saddle receiving portion and the steering column side by side.

  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, a combine according to the present invention includes a cutting part having a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with a traveling part and an engine, and a steering column on which a plurality of operation levers are arranged. In a combine in which a hydraulic continuously variable transmission is provided in a transmission case for driving the traveling unit, the combine is provided with an oil cooler for cooling the hydraulic oil of the hydraulic continuously variable transmission and a cooling cooler fan, and the cooling cooler An intermediate shaft to which a fan is attached is provided in a transmission path between the engine and the hydraulic continuously variable transmission, the intermediate shaft extends in the left-right direction of the traveling machine body, and the cooling cooler fan and the oil cooler There is disposed near the steering column, the threshing section to horizontal attitude toward the lateral direction is mounted to the traveling machine body upper surface, the threshing portion rearward The engine is mounted on an upper surface of the traveling machine body, the transmission case is suspended from and supported by the traveling machine body behind the engine, and the hydraulic continuously variable transmission is mounted on the transmission case. The intermediate shaft is pivotally supported by a support frame that is erected on the rear side .

In the combine described above, the lower ends of the pair of left and right strut frames are connected to the traveling machine body at a position on the left and right sides behind the hydraulic continuously variable transmission, and the intermediate shaft is connected to the left and right via a bearing cylinder. The intermediate shaft may be disposed on the rear upper side of the hydraulic continuously variable transmission .

The combine includes a pulley and a belt for transmitting engine power to the hydraulic continuously variable transmission, wherein the cooling cooler fan is provided at an inner end of the intermediate shaft on which the pulley is pivotally supported. And the oil cooler may be disposed between the cooling cooler fan and the steering column .

According to a fourth aspect of the present invention, there is provided a combine according to a fourth aspect of the present invention, comprising: a cutting portion having a cutting blade; a threshing portion having a handling drum; a traveling body having a traveling portion and an engine; and a steering column in which a plurality of operation levers are disposed. In a combine in which a hydraulic continuously variable transmission is provided in a transmission case for driving a part, the oil cooler for cooling the hydraulic oil of the hydraulic continuously variable transmission and a cooling cooler fan are provided, and the cooling cooler fan is attached to the combine The intermediate shaft is provided in a transmission path between the engine and the hydraulic continuously variable transmission, the intermediate shaft extends in the left-right direction of the traveling machine body, and the cooling cooler fan and the oil cooler are Arranged in the vicinity of the column, an air cleaner and an exhaust muffler are arranged side by side behind the engine, and the intermediate shaft is disposed behind the exhaust muffler. Together are arranged, the cooling cooler fan and the oil cooler to the air cleaner backwards is intended to be placed.

In the combine, a cooling fan for cooling the hydraulic continuously variable transmission is supported on an input shaft of the hydraulic continuously variable transmission, and the cooling fan is arranged side by side with the cooling cooler fan. It may be a thing.

The combine includes a pulley and a belt for transmitting engine power to the hydraulic continuously variable transmission, wherein the cooling cooler fan is provided at an inner end of the intermediate shaft on which the pulley is pivotally supported. The oil cooler may be provided between the cooling cooler fan and the steering column .

  According to the present invention, since the mounting position of the intermediate shaft can be easily selected in the vertical or front-rear direction, the mounting position of the cooling cooler fan can be easily determined in correspondence with the oil cooler, and can be mounted on a compact and lightweight structure combine. A traveling unit drive structure suitable for an output engine can be easily configured. For example, the threshing unit is mounted on the upper surface of the traveling machine body in a horizontal orientation toward the left and right direction, the engine and the hook part are arranged behind the threshing part, and the rear left and right rear parts of the traveling machine body A small and lightweight combine combiner can be constructed by arranging the saddle receiving part and the steering column side by side.

  According to the present invention, since the oil cooler is arranged on the inner side of the cooling cooler fan, the oil cooler can be brought close to the hydraulic continuously variable transmission at the top of the transmission case and can be supported in a compact manner. It is possible to supply the oil cooler with less air as cooling air. In addition, since the cooling fan wind can be moved from the steering column side to the transmission case via the oil cooler, the transmission case and the hydraulic continuously variable transmission can be cooled with less dust and away from the operator on the steering column side. The hot air of the cooling fan can be discharged in the direction.

  According to the present invention, a hydraulic continuously variable transmission, an oil cooler, and a cooling cooler fan are provided, and a traveling unit drive structure with high traveling performance can be easily configured, but a combine with a small and lightweight structure can be easily configured. . And the threshing part is mounted on the upper surface of the traveling machine body in the horizontal orientation toward the left and right direction, the engine and the saddle receiving part can be arranged behind the threshing part, and the saddle receiving part and the steering column are arranged at the left and right rear parts on the rear side of the engine. Can be installed side by side.

According to the present invention, since the support frame is provided on the rear side of the hydraulic continuously variable transmission, the hydraulic continuously variable transmission and the rear portion of the transmission case can be protected by the traveling machine body and the support frame, respectively. Further, by arranging the oil cooler between the steering column and the transmission case, it is possible to prevent the operator from accidentally contacting the drive part such as the transmission case or the hydraulic continuously variable transmission during operation.

  According to the present invention, the cooling cooler fan is disposed behind the air cleaner, so that the cooling cooler fan and the oil cooler are installed on the intake side at the rear side of the engine and at a relatively low temperature. In addition to preventing a decrease in the cooling effect of the hydraulic oil, it is possible to suppress an increase in the temperature of the cooling air from the cooling cooler fan. In addition, since the cooling air from the cooling cooler fan flows into the space behind the exhaust muffler that becomes high due to the exhaust temperature, the ambient temperature of the hydraulic continuously variable transmission and the transmission case located behind the engine becomes high. Can be prevented.

  According to the present invention, in order to arrange the cooling fan and the cooling cooler fan attached to the hydraulic continuously variable transmission back and forth, and arrange the cooling fan and the cooling cooler fan together between the steering column and the transmission case, The left and right width of the traveling aircraft can be configured compactly.

It is a left view of the normal type combine which shows 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. FIG. 8 is an enlarged explanatory diagram of FIG. 7. 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 left view of a traveling body and a mission case part. It is a top view of a traveling body and a mission case part. It is a rear view of a traveling body and a mission case part. FIG. 19 is an enlarged explanatory diagram of FIG. 18. It is a perspective view of the traveling body and mission case part seen from the left rear. It is expansion explanatory drawing of FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 21) 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 whole amount of the harvested cereal meal of the grain header 12 is conveyed by the supply conveyor 17 in the feeder house 11 and is put into the treatment chamber 22 from the treatment port supply plate 9a provided on the left side of the threshing part 9. ing.

  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.

  A driver's seat 42 on which an operator sits is detachably disposed behind the steering 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, 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 23, the rear side of the crawler belt 2 is supported by the drive sprocket 51, the grounding side of the crawler belt 2 is supported in a horizontal posture by the track roller 54, and the non-grounding 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 transmission input shaft 66 projecting rightward (inner side) from the mission case 63 are placed on the left side. The travel output belt 67x and the right travel output belt 67y are connected.

  Further, the left traveling output belt 67x 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. 17 to 21, the input pulley fan 70a is fixed to the right side of the speed change input pulley 70 (the steering column 41 side), and the hydraulic continuously variable transmission 64 is air-cooled by the input pulley fan 70a. It is composed.

  In addition, as shown in FIGS. 7 to 10, 13, 14, and 16 to 21, an intermediate frame 131 is erected on the traveling machine body 1, and a left intermediate pulley is connected to the intermediate frame 131 via an intermediate shaft 132. 133 and the right intermediate pulley 134 are pivotally supported integrally, and the left traveling output belt 67x is wound around the traveling drive pulley 69 and the left intermediate pulley 133 via the traveling clutch 68, and the right intermediate pulley 134 The right traveling output belt 67y is hung between the transmission input pulley 70 and the transmission input pulley 70.

  A hydraulic continuously variable transmission 64 is integrally mounted 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 placed in 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. Further, the transmission case 63 on the rear side of the engine 7 is arranged on the left side of the machine body with respect to the longitudinal center line of the machine body, and the shift input pulley 70 is mounted on the center side of the right side of the machine body of the traveling machine body 1.

  The intermediate frame 131 extends from the middle of the left column frame 131a diagonally forward and downward from a pair of left and right column frames (bearing columns) 131a and 131b standing from the rear end of the upper frame 1b of the traveling vehicle 1. The support frame 131c is connected to the upper body frame 1b, and the bearing cylinder 131d is horizontally mounted on the support frames 131a and 131b. The rear portion 116 of the upper body frame 1b is installed so as to surround the left and right sides and the rear side of the mission case 63, and is configured as a mission protection frame together with the intermediate frame 131.

  That is, the rear portion 116 of the upper body frame 1b protects the left and right side surfaces and the rear surface of the mission case 63, while the intermediate frame 131 protects the left and right side surfaces and the rear surface of the hydraulic continuously variable transmission 64 above the mission case 63. Further, a mission protection cover 117 is attached to the intermediate frame 131 so that 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.

  The intermediate shaft 132 is rotatably inserted into the bearing cylinder 131d, and is horizontally mounted on a pair of left and right column frames 131a and 131b constituting the intermediate frame 131. The left intermediate pulley 133 is pivotally supported on the left side of the left column frame 131a, while the right intermediate pulley 134 is pivotally supported on the right side of the right column frame 131b. Further, the right support frame 131b pivotally supports an L-shaped intermediate tension arm 135a that supports an intermediate tension roller 135 that tensions the right traveling output belt 67y. On the other hand, the travel tension arm 149 on which the travel clutch 68 that tensions the left travel output belt 67x is supported is pivotally supported by the upper body frame 1b at the front position of the rod support column 39.

  The input pulley fan 70a supported by the shift input pulley 70 on the front end side of the right traveling output belt 67y is disposed behind the engine 7 and below the air cleaner 315. On the other hand, the cooling cooler fan 218 supported by the right intermediate pulley 134 on the rear end side of the right traveling output belt 67y is disposed on the upper rear side of the input pulley fan 70a. An input pulley fan 70a and a cooling cooler fan 218 are arranged side by side in the front-rear direction and the vertical direction. Therefore, the input pulley fan 70a and the cooling cooler fan 218 can be compactly installed in the space between the steering column 41 and the mission case 63, and the lateral width of the mission case 63 installation portion can be compactly configured.

  The oil cooler 217 is installed so as to face the right side surface of the cooling cooler fan 218, and is installed in the cooler case body 412 together with the cooling cooler fan 218. The cooler case body 412 is fixed to the upper body frame 1 b and the intermediate frame 131 via the case bracket body 411, and is disposed between the intermediate frame 131 and the steering column 41.

  With the above configuration, the outside air in the space behind the steering column 41 is sucked into the cooler case body 412 by the cooling cooler fan 218 and supplied to the oil cooler 217. Therefore, outside air is sucked from the space behind the control column 41 with relatively little soot, and air with relatively little dust such as soot can be supplied to the oil cooler 217 as cooling air. Further, since the rear of the intermediate frame 131 is covered with the mission protection cover 117, the cooling air passing through the oil cooler 217 is caused by the mission protection cover 117 to be on the dust outlet 23 side of the handling chamber 22 on the outer side of the machine ( To the right). Accordingly, it is possible to suppress the dust discharged from the dust discharge port 23 from entering the traveling machine body 1 side, and to prevent biting in the drive mechanism including the transmission case 63 and the hydraulic continuously variable transmission 64.

  As shown in FIGS. 7 to 11, 13 to 17, and 20, 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. The left end of the cutting input shaft 18 is connected to the right end of the header drive shaft 91 via header drive sprockets 88 and 89 and a header drive chain 90.

  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 drive shaft 153 supports the base end of the reel drive tension arm 165, the reel drive belt 164 is pressed against the reel drive tension pulley 166 by the reel drive tension spring force, and the reel drive tension pulley 166 causes the reel drive 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 is configured to return to the hydraulic oil tank 55 from the hydraulic continuously variable transmission 64 or the lift hydraulic circuit 216 via the oil cooler 217. The oil cooler 217 is configured to be air-cooled by a cooling cooler fan 218 provided on the intermediate shaft 132 so as to maintain the hydraulic oil in the hydraulic oil tank 55 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, 14, and 16 to 21. 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. Further, the rear end side of the upper airframe frame 1b extends rearward from the rear end side of the lower airframe frame 1a, and the upper end side of the transmission case 63 is connected to the rear end side of the upper airframe frame 1b via the upper connecting body 62. Support detachable. In this way, the mission case 63 is disposed in a tilted posture on the upper end side of the rear support leg 33 and the rear end side of the upper body frame 1b.

  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.

  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. Further, a belt cover body 183 is stretched on the left side of the engine 7 on which the threshing drive belt 59, the left traveling output belt 67x, and the fan drive belt 84 are disposed. 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, 67 x, 84.

  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, a hydraulic circuit structure in which the hydraulic oil tank 55, the transmission case 63, and the oil cooler 217 are arranged will be described with reference to FIGS. As shown in FIGS. 16 and 17, a cooler case body 412 is fixed to the rear of the traveling machine body 1 via a case bracket body 411, and an oil cooler 217 and a cooling cooler fan 218 are provided in the cooler case body 412.

  An intermediate shaft 132 is provided in the transmission path between the engine 7 and the hydraulic continuously variable transmission 64, and an oil cooler 217 and a cooling cooler fan 218 for cooling the hydraulic oil of the hydraulic continuously variable transmission 64 are installed in the vicinity of the intermediate shaft 132. Yes. An intermediate shaft is extended in the left-right direction of the traveling machine body 1, a cooling cooler fan 218 is attached to the right end portion (machine inner end portion) of the intermediate shaft 132, and the attachment position of the intermediate shaft 132 is selected vertically or horizontally. Each mounting position can be determined according to the oil cooler 217 or the cooling cooler fan 218.

  On the other hand, the rear surface of the mission case 63 is fixed to the center of the left and right width of the traveling machine body 1 (upper body frame 1b) via the mission bracket body 413, and the mission case 63 is disposed at the rear part of the traveling machine body 1. A cooling cooler fan 218 is provided at the inner end of the intermediate shaft 132, an oil cooler 217 is disposed on the inner side of the cooling cooler fan 218, and the oil cooler 217 is placed close to the hydraulic continuously variable transmission 64 on the left side of the transmission case 63. It is configured to be supported. In addition, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation directed in the left-right direction, the engine 7 and the hook receiving unit 6 are disposed behind the threshing unit 9, and the left and right rear portions of the rear side of the engine 7 are received by the hook. 6 and the operation column 41 are arranged side by side, the hydraulic continuously variable transmission 64 and the valve block body 214 are arranged side by side on the upper side of the transmission case 63, and the lift valve 213 and the like are installed in the valve block body 214 on the right side of the upper side of the transmission case 63. Set up. A cooling cooler fan 218 is disposed between the mission case 63 and the control column 41, and a traveling unit drive structure with high traveling performance is provided in which the hydraulic continuously variable transmission 64, the oil cooler 217, and the cooling cooler fan 218 are arranged.

  In addition, the tank mounting base 421 is integrally fixed to the lower body frame 1a, the lower part of the hydraulic oil tank 55 is fixed to the tank mounting base 421 via the tank bracket body 422, and the standing bracket body 423 is attached to the upper body frame 1b. The upper part of the hydraulic oil tank 55 is fixed through the gap. The hydraulic oil tank 55 is fastened and fixed to the lower fuselage frame 1a and the upper fuselage frame 1b. Between the lower fuselage frame 1a and the upper fuselage frame 1b that form the traveling aircraft 1 in a multi-stage structure, the upper part of the transmission case 63 The hydraulic oil tank 55 for supplying the hydraulic oil to the hydraulic continuously variable transmission 64 is attached, and the hydraulic oil is placed in a place where the cooling efficiency is good at a position lower than the engine 7 without limiting the size of the hydraulic oil tank 55. A tank 55 is installed.

  That is, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation in the left-right direction, the engine 7 and the hook receiving unit 6 are disposed behind the threshing unit 9, and the engine 7 is mounted on the upper surface of the upper machine frame 1b. At the same time, the front end side of the lower body frame 1a extends forward from the front end side of the upper body frame 1b, and the threshing portion 9 is placed on the upper surface of the front end side of the lower body frame 1a via the front frame body 121, The hydraulic oil tank 55 is disposed below the rear side of the part 9 and the front side of the engine 7, and the engine 7 is brought close to the rear side of the threshing part 9 in the horizontal orientation to form a combine machine body compactly, between the threshing part 9 and the engine 7. A large-capacity hydraulic oil tank 55 is supported below the bottom.

  An oil cap 424 is provided on the upper surface of the hydraulic oil tank 55, and a drain cap 425 is provided on the lower front surface of the hydraulic oil tank 55. A maintenance work space for the hydraulic oil tank 55 is secured between the threshing unit 9 and the engine 7, and an opening / closing operation of the oiling cap 424 or the drain cap 425 is performed between the threshing unit 9 and the engine 7. The operation of attaching / detaching the hydraulic oil tank 55, the operation of replenishing the hydraulic oil to the hydraulic oil tank 55, or the operation of replacing the hydraulic oil in the hydraulic oil tank 55 can be simplified. Oil filters 431 and 432 are built in the hydraulic oil tank 55.

  As shown in FIG. 12, the charge pump 212 is connected to the oil filter 431 inside the hydraulic oil tank 55 via the supply hydraulic pipe 433, and the work pump 215 is connected to the oil filter 432 inside the hydraulic oil tank 55 via the supply hydraulic pipe 434. Is connected. The hydraulic oil tank 55 is connected to the hydraulic continuously variable transmission 64 via a return hydraulic pipe 435, the oil cooler 217 is connected to the valve block 214 via a return hydraulic pipe 436, and the hydraulic oil tank 55 is returned to the oil cooler 217. It is connected with a hydraulic pipe 437.

  With the above configuration, the hydraulic oil inside the hydraulic oil tank 55 circulates and moves to the oil cooler 217 and is cooled, while a maintenance work space for the hydraulic oil tank 55 is secured between the threshing unit 9 and the engine 7. The pipes 433 to 437 can be connected, and maintenance such as replacement of the oil filters 431 and 432 can be easily executed. Further, the lifting hydraulic cylinder 4 is connected to the valve block 214 via the lifting hydraulic pipe 438, and the lifting hydraulic cylinder 4 is operated by the switching operation of the lifting valve 213.

  As shown in FIGS. 7 to 14 and FIGS. 16 to 21, the engine 7 and the hydraulic continuously variable transmission have an oil cooler 217 and a cooling cooler fan 218 for cooling the hydraulic oil of the hydraulic continuously variable transmission 64. An intermediate shaft 132 is provided in the transmission path between 64, the intermediate shaft 132 extends in the left-right direction of the traveling machine body 1, and a cooling cooler fan 218 is attached to the intermediate shaft 132. Therefore, since the mounting position of the intermediate shaft 132 can be easily selected in the vertical or front-rear direction, the mounting position of the cooling cooler fan 218 can be easily determined in correspondence with the oil cooler 217, and the small output mounted on the combine of the small and light structure. The crawler belt 2 drive structure suitable for the engine 7 can be easily configured. For example, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the saddle receiving part 6 are disposed behind the threshing unit 9. A small and light-weight combine can be configured by arranging the rod receiving portion 6 and the steering column 41 in parallel on the left and right rear portions on the rear side.

  An intermediate shaft 132 to which the cooling cooler fan 218 is attached is provided in a transmission path between the engine 7 and the hydraulic continuously variable transmission 64, and the intermediate shaft 132 extends in the left-right direction of the traveling machine body 1. 218 and an oil cooler 217 are arranged in the vicinity of the steering column 41. Therefore, since the cooling fan wind can be moved from the steering column 41 side to the transmission case 63 via the oil cooler 217, the transmission case 63 and the hydraulic continuously variable transmission 64 can be cooled by air with little dust, and the steering column. The hot air from the cooling fan can be discharged in a direction away from the operator on the 41 side.

  The structure is provided with pulleys 133 and 134 and belts 67x and 67y for transmitting the power of the engine 7 to the hydraulic continuously variable transmission 64, and is provided at the inner end of the intermediate shaft 132 on which the pulleys 133 and 134 are pivotally supported. A cooling cooler fan 218 was provided, and an oil cooler 217 was disposed between the cooling cooler fan 218 and the steering column 41. Therefore, the oil cooler 217 can be brought close to the hydraulic continuously variable transmission 64 at the top of the transmission case 63 and can be compactly supported, and air with less dust behind the engine 7 can be supplied to the oil cooler 217 as cooling air.

  The threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation toward the left and right direction, the engine 7 is mounted on the upper surface of the traveling machine body 1 behind the threshing unit 9, and the transmission case 63 is suspended from the traveling machine body 1 behind the engine 7. A hydraulic continuously variable transmission 64 is mounted on the transmission case 63 and is supported by a lowering. An intermediate shaft 132 is pivotally supported by an intermediate frame 131 erected on the rear side of the hydraulic continuously variable transmission 64. Therefore, the traveling case 1 and the intermediate frame 131 can protect the transmission case 63 and the rear portion of the hydraulic continuously variable transmission 64, respectively.

  In addition, since the cooler case body 412 in which the oil cooler 217 is installed is installed between the steering column 41 and the transmission case 63, the operator erroneously drives the transmission case 63, the hydraulic continuously variable transmission 64, and the like during operation. It is possible to prevent contact with the part. The cooler case body 412 is fixed to the traveling machine body 1 and the intermediate frame 131 via the case bracket body 411. Therefore, the oil cooler 217 can be supported with high rigidity by using the traveling machine body 1 and the intermediate frame 131 without specially installing a support member for the oil cooler 217, and the number of parts attached to the oil cooler 217 can be reduced and the cost can be reduced. Can be configured.

  The lower ends of a pair of left and right column frames 131a and 131b are connected to the traveling machine body 1 at a position behind the hydraulic continuously variable transmission 64 and on the left and right sides, and the intermediate shaft 132 is connected to the left and right via the bearing cylinder 131d. An intermediate shaft 132 is disposed on the rear upper side of the hydraulic continuously variable transmission 64 so as to be horizontally mounted on the support frames 131a and 131b. Therefore, the traveling case 1 and the intermediate frame 131 can protect the transmission case 63 and the rear portion of the hydraulic continuously variable transmission 64 without specially installing a protective frame for protecting the transmission case 63.

  An air cleaner 315 and an exhaust muffler 316 are arranged side by side behind the engine 7, an intermediate shaft 132 is arranged behind the exhaust muffler 316, and a cooling cooler fan 218 and an oil cooler 217 are arranged behind the air cleaner 315. . Therefore, the oil cooler 217 and the cooling cooler fan 218 are installed on the intake side behind the engine 7 and at a relatively low temperature. Therefore, it is possible not only to prevent a decrease in the cooling effect of the hydraulic oil in the oil cooler 217 but also to prevent the cooling air temperature from the cooling cooler fan 218 from increasing. Further, since the cooling air from the cooling cooler fan 218 flows into the space behind the exhaust muffler 316 that becomes high due to the exhaust temperature, the periphery of the hydraulic continuously variable transmission 64 and the transmission case 63 located behind the engine 7 It is possible to prevent the temperature from becoming high.

  An input pulley fan (cooling fan) 70 a that cools the hydraulic continuously variable transmission 64 is supported on the shaft, and the input pulley fan 70 a is arranged side by side with the cooling cooler fan 218. Therefore, the input pulley fan 70a and the cooling cooler fan 218 attached to the hydraulic continuously variable transmission 64 are arranged in the front and rear, and the input pulley fan 70a and the cooling cooler fan 218 are both spaces between the steering column 41 and the transmission case 63. Therefore, the lateral width of the traveling machine body 1 can be configured in a compact manner.

  As shown in FIGS. 4 to 12, 16, and 17, a hydraulic continuously variable transmission 64 on the upper side of the transmission case 63 is provided between the lower body frame 1 a and the upper body frame 1 b that form the traveling machine body 1 in an upper and lower multistage structure. A hydraulic oil tank 55 for supplying hydraulic oil is attached. Therefore, without limiting the size of the hydraulic oil tank 55, it is possible to easily secure a place for installing the hydraulic oil tank 55 with good cooling efficiency at a position lower than the engine 7. A traveling part (crawler belt 2) drive structure suitable for a small-power engine 7 mounted on a small and lightweight combine can be easily configured. For example, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the saddle receiving part 6 are disposed behind the threshing unit 9. A small and light-weight combine can be configured by arranging the rod receiving portion 6 and the steering column 41 in parallel on the left and right rear portions on the rear side.

  The threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the hook receiving unit 6 are arranged behind the threshing part 9, and the engine 7 is mounted on the upper surface of the upper machine body frame 1 b. , The front end side of the lower body frame 1a is extended forward of the front end side of the upper body frame 1b, the threshing part 9 is placed on the upper surface of the front end side of the lower body frame 1a, the rear side of the threshing part 9 and the engine 7 A hydraulic oil tank 55 is arranged below the front side. Therefore, even if the engine 7 is placed close to the rear side of the threshing portion 9 in the horizontal orientation, the large-capacity hydraulic oil tank 55 can be easily supported below the threshing portion 9 and the engine 7. .

  The threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation toward the left and right direction, the hydraulic oil tank 55 is disposed behind the threshing part 9, and the hydraulic oil tank 55 is fastened to the lower machine frame 1a and the upper machine frame 1b. In addition to fixing, oil filters 431 and 432 and the like are built in the hydraulic oil tank 55, an oil cap 424 is provided on the upper surface of the hydraulic oil tank 55, and a drain cap 425 is provided on the lower front surface of the hydraulic oil tank 55. Therefore, a working space related to the hydraulic oil tank 55 can be easily secured between the rear portion of the threshing portion 9 and the front portion of the engine 7. For example, an opening / closing operation of the oil cap 424 or the drain cap 425 can be easily executed. The operation of attaching and detaching the hydraulic oil tank 55, the operation of connecting the hydraulic pipes 433 to 437 or the operation of replenishing the hydraulic oil to the hydraulic oil tank 55 can be simplified, and maintenance such as replacement of the oil filters 431 and 432 can be easily performed. .

  The mission case 63 is arranged at the rear part of the traveling machine body 1, the threshing part 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation in the left-right direction, and the engine 7 and the guard part 6 are arranged behind the threshing part 9, A structure in which the eaves receiving portion 6 and the steering column 41 are provided side by side at the left and right rear portions on the rear side of the engine 7, and an intermediate shaft 132 is provided in a transmission path between the engine 7 and the hydraulic continuously variable transmission 64 to provide a hydraulic continuously variable transmission. An oil cooler 217 for cooling the hydraulic oil of the machine 64 and a cooling cooler fan 218 are installed in the vicinity of the intermediate shaft 132. Therefore, the hydraulic continuously variable transmission 64, the oil cooler 217, and the cooling cooler fan 218 are provided, and a driving unit (crawler belt 2) drive structure with high driving performance can be easily configured, but a small and lightweight combine is easy. Can be configured.

1 traveling body 2 crawler track (traveling section)
3 Cutting part 6 Reed receiving part 7 Engine 9 Threshing part 15 Cutting blade 21 Handling cylinder 39 Prop frame body (reed supporting post)
41 Steering column 63 Mission case 64 Hydraulic continuously variable transmission 67x Left traveling output belt 67y Right traveling output belt 131 Intermediate frame 131a Left strut frame 131b Right strut frame 131c Support frame 131d Bearing cylinder 132 Intermediate shaft 133 Left intermediate pulley 134 Right intermediate pulley 217 Oil Cooler 218 Cooling Cooler Fan 441 Reverse Case

Claims (6)

A cutting case having a cutting blade, a threshing portion having a handling cylinder, a traveling machine body provided with a traveling unit and an engine, and a steering column in which a plurality of operation levers are disposed, and a hydraulic pressure is applied to a transmission case for driving the traveling unit In a combine that provides a continuously variable transmission,
A structure comprising an oil cooler and a cooling cooler fan for cooling the hydraulic oil of the hydraulic continuously variable transmission,
An intermediate shaft to which the cooling cooler fan is attached is provided in a transmission path between the engine and the hydraulic continuously variable transmission, and the intermediate shaft extends in the left-right direction of the traveling machine body, and the cooling cooler fan and The oil cooler is disposed near the steering column ;
The threshing part is mounted on the upper surface of the traveling machine body in a horizontal orientation directed in the left-right direction, the engine is mounted on the upper surface of the traveling machine body behind the threshing part, and the mission case is mounted on the traveling machine body behind the engine. The hydraulic continuously variable transmission is mounted on the transmission case, and the intermediate shaft is pivotally supported by a support frame that is erected on the rear side of the hydraulic continuously variable transmission. Combine with. The lower ends of a pair of left and right support columns are connected to the traveling machine body at a position behind the hydraulic continuously variable transmission and on the left and right sides, and the intermediate shaft is connected to the left and right support frames via a bearing cylinder. The combine according to claim 1 , wherein the intermediate shaft is disposed on a rear upper side of the hydraulic continuously variable transmission . A structure including a pulley and a belt for transmitting engine power to the hydraulic continuously variable transmission, wherein the cooling cooler fan is provided at an inner end of the intermediate shaft on which the pulley is pivotally supported, and the cooling The combine according to claim 1 or 2, wherein the oil cooler is disposed between a cooler fan and the steering column . A cutting case having a cutting blade, a threshing portion having a handling cylinder, a traveling machine body provided with a traveling unit and an engine, and a steering column in which a plurality of operation levers are disposed, and a hydraulic pressure is applied to a transmission case for driving the traveling unit In a combine that provides a continuously variable transmission,
A structure comprising an oil cooler and a cooling cooler fan for cooling the hydraulic oil of the hydraulic continuously variable transmission,
An intermediate shaft to which the cooling cooler fan is attached is provided in a transmission path between the engine and the hydraulic continuously variable transmission, and the intermediate shaft extends in the left-right direction of the traveling machine body, and the cooling cooler fan and The oil cooler is disposed near the steering column;
An air cleaner and an exhaust muffler are arranged side by side behind the engine, the intermediate shaft is arranged behind the exhaust muffler, and the cooling cooler fan and the oil cooler are arranged behind the air cleaner. features and to Turkey Nbain. A cooling fan for cooling the hydraulic continuously variable transmission is pivotally supported on an input shaft of the hydraulic continuously variable transmission, and the cooling fan is arranged side by side with the cooling cooler fan. The combine according to claim 4 . A structure including a pulley and a belt for transmitting engine power to the hydraulic continuously variable transmission, wherein the cooling cooler fan is provided at an inner end of the intermediate shaft on which the pulley is pivotally supported, and the cooling The combine according to claim 4 or 5 , wherein the oil cooler is disposed between a cooler fan and the steering column .

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