JP2014075993A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester including peripheral components (cooling system components) such as a radiator 144 and an oil cooler 203 efficiently and compactly disposed around the periphery of an engine 7.SOLUTION: The combine harvester includes a traveling machine body 1 having the engine 7 and a control platform 5, a reaper 3, a thresher 9, and a tank 8 collecting grains from the thresher 9 and storing them. A cooling fan 136 is disposed on one side of the left/right of the engine 7. External air introduction covers 141 are disposed on left/right sides outside the cooling fan 136. A radiator 144 is provided between the cooling fan 136 and the external air introduction cover 141. An oil cooler 203 is disposed on an external air intake side of the radiator 144. The oil cooler 203 is fitted to the inside of the external air introduction cover 141.

Description

  The present invention relates to a combine that harvests cereal grains planted in a field and collects grains.

  A conventional combine includes a traveling machine body having an engine and a cab, a reaping device, a threshing device, and a tank that collects and stores grains from the threshing device. In this type of combine, a cooling fan is provided on the left and right sides of the engine, an outside air introduction cover is disposed on the left and right outside of the cooling fan, a radiator is provided between the cooling fan and the outside air introduction cover, and the cooling fan is rotated. A technique for cooling a radiator by blowing cooling air taken in from an outside air introduction cover to the radiator is well known (see, for example, Patent Document 1).

JP 2005-192525 A

  By the way, many of the recent combine harvesters have a layout in which an engine is mounted below the cab, but due to the demand for weight reduction and compactness and the arrangement relationship with other devices (for example, reaping devices), There are many restrictions on the engine mounting space below. That is, the engine mounting space is often narrow. For this reason, it is required to lay out peripheral components (cooling system components) such as a radiator and an oil cooler in a compact engine mounting space in consideration of cooling efficiency and the number of components.

  The present invention considers the current situation as described above, and has a technical problem to provide a combine in which peripheral parts such as cooling system parts are efficiently and compactly arranged around the engine.

  The invention of claim 1 includes a traveling machine body having an engine and a cab, a reaping device, a threshing device, and a tank that collects and stores grains from the threshing device, and is provided on one side of the engine. An oil cooler is disposed on the outside air intake side of the radiator in the combine in which a cooling fan is provided, an outside air introduction cover is disposed on the left and right outer sides of the cooling fan, and a radiator is disposed between the cooling fan and the outside air introduction cover. The oil cooler is attached inside the outside air introduction cover.

  The invention according to claim 2 is the combine according to claim 1, wherein the outside air introduction cover and the oil cooler are connected by a pair of upper and lower connecting stays along the width direction of the oil cooler. is there.

  According to a third aspect of the present invention, in the combine according to the second aspect, an outside air intake port is formed in an upper portion of the left and right outer side surfaces of the outside air introduction cover, and the oil cooler is positioned on a lower side in the outside air introduction cover, A wind direction plate for deflecting the air flow from the outside air intake port toward the outside air intake side of the oil cooler is arranged above the upper connecting stay in the outside air introduction cover.

  According to the first aspect of the present invention, the vehicle includes a traveling machine body having an engine and a cab, a reaping device, a threshing device, and a tank that collects and stores grains from the threshing device, and the left and right sides of the engine. Provided with a cooling fan, an outside air introduction cover is disposed on the left and right outside of the cooling fan, and a radiator is provided between the cooling fan and the outside air introduction cover, an oil cooler is provided on the outside air intake side of the radiator. Since the oil cooler is installed inside the outside air introduction cover, the oil cooler is made compact by effectively utilizing the inside of the outside air introduction cover in consideration of the cooling efficiency of the cooling air by the cooling fan. Moreover, it can be functionally arranged and the utilization efficiency of the engine mounting space can be improved. The oil cooler can be arranged as far away as possible from the radiator, and cooling air can be evenly supplied to the outside air intake side of the radiator. This contributes to improving the heat dissipation efficiency of the radiator.

  According to the invention of claim 2, since the outside air introduction cover and the oil cooler are connected by the pair of upper and lower connecting stays that are long along the width direction of the oil cooler, the oil inside the outside air introduction cover Regarding the mounting of the cooler, there is an advantage that high mounting strength can be secured by the pair of upper and lower connecting stays.

  According to the invention of claim 3, an outside air intake port is formed in the upper part of the left and right outer side surfaces of the outside air introduction cover, the oil cooler is positioned on the lower side in the outside air introduction cover, and the upper side of the inside of the outside air introduction cover A wind direction plate that deflects the air flow from the outside air intake port toward the outside air intake side of the oil cooler is disposed above the connection stay. The oil cooler can be smoothly supplied to the outside air intake side without being sent directly to the radiator side, and the heat dissipation efficiency of the oil cooler can be improved. The air direction plate makes it difficult for the air from the outside air intake port to flow directly to the radiator side, and there is little possibility of generating a reverse air flow that returns from the radiator to the oil cooler. As a result, vibration of the oil cooler can be suppressed, and the risk of damage to the connecting stay, which is the mounting portion of the oil cooler, is reduced.

It is a left view of the combine in 1st Embodiment. It is a right view of a combine. It is a top view of a combine. It is a front view of a combine. It is a rear view of a combine. It is a bottom view of a combine. It is the perspective view which looked at the combine from the diagonally left front. It is the perspective view which looked at the combine from diagonally right rear. It is a drive system diagram of a combine. It is a front view of an engine and an intake / exhaust system. It is a rear view of an engine and an intake / exhaust system. It is a left view of an engine and an intake / exhaust system. It is the perspective view which looked at the intake / exhaust system from diagonally right rear. It is the perspective view which looked at the support structure of an external air introduction tube from the diagonally left front. It is the perspective view which looked at the support structure of an external air introduction tube from diagonally right rear. It is a perspective view which shows the support structure of a pre cleaner. It is a left view of the combine in 2nd Embodiment. It is a right view of a combine. It is a top view of a combine. It is a right view of an engine and an intake / exhaust system. It is the perspective view which looked at the engine from diagonally left front. It is the perspective view which looked at the engine from diagonally forward right. It is the isolation | separation perspective view from the diagonal left front explaining the attachment aspect of a muffler. It is the isolation | separation perspective view from the diagonally right front explaining the attachment aspect of a muffler. It is an enlarged front view which shows the arrangement | positioning relationship of an engine, a radiator, and an external air introduction cover. It is the perspective view which looked at the internal structure of the outside air introduction cover from the diagonally left front. It is the perspective view which looked at the internal structure of the outside air introduction cover from diagonally left rear. It is front sectional drawing which shows the internal structure of an external air introduction cover. It is an expanded front sectional view which shows the attachment aspect of an oil cooler upper part side. It is an expanded front sectional view which shows the attachment aspect of an oil cooler lower part side.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment embodying the present invention will be described based on a drawing in which an embodiment of the present invention is applied to an ordinary combine (hereinafter simply referred to as a combine).

(1). First, the schematic structure of the combine according to the first embodiment 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 8, the ordinary combine according to the first embodiment includes a traveling machine body 1 supported by a pair of left and right crawler belts 2 as traveling portions. The crawler belt 2 of the first embodiment is made of a rubber crawler. At the front part of the traveling machine body 1, a harvesting device 3 that takes in ungrown grains such as rice (may be wheat, soybeans or corn) while harvesting can be adjusted up and down with a single-acting lifting hydraulic cylinder 4. Wearing.

  On the left side of the traveling machine body 1, a threshing device 9 for threshing the harvested cereal meal supplied from the reaping device 3 is mounted. In the lower part of the threshing device 9, a grain sorting mechanism 10 for performing swing sorting and wind sorting is arranged. A driver's cab 5 on which an operator is boarded is mounted on the front right side of the traveling machine body 1. An engine 7 as a power source is arranged on the cab 5. Behind the cab 5 (on the right side of the traveling machine body 1), the top sucker 6 serving as a tank for taking out and collecting the grains from the threshing device 9 and the basket receptacle for filling the grains in the top sucker 6 into the bag 8a. A base 8 is arranged. Auxiliary workers board the cradle cradle 8 and carry the grains in the top sucker 6 to the cradle bag 8a.

  The reaping device 3 includes a feeder house 11 that communicates with a handling port 9 a in the front part of the threshing device 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. Further, a supply conveyor 17 is provided in the feeder house 11. A beater 18 (front rotor) for feeding the harvested cereals is provided on the feed end side (handle 9a) of the supply conveyor 17. The lower surface portion of the feeder house 11 and the front end portion of the traveling machine body 1 are connected by an elevating hydraulic cylinder 4, and the mowing device 3 is used as an elevating hydraulic pressure with a mowing input shaft 89 (feeder house conveyor shaft) described later as an elevating fulcrum. The cylinder 4 is configured to move up and down.

  In the above configuration, the tip side of the uncut grain culm between the right and left weed bodies 16 is scraped by the scraping reel 14, and the stock side of the uncut grain culm is cut by the cutting blade 15 and scraped. Due to the rotational drive of the auger 13, 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 taken into the grain header 12 is transported by the supply conveyor 17 and put into the handling port 9 a of the threshing device 9 by the beater 18. The grain header 12, the cutting blade 15, and the take-up reel 14 are adjusted by adjusting the inclination of the grain header 12 in the horizontal direction by a horizontal control hydraulic cylinder (not shown) that rotates the grain header 12 about the horizontal control fulcrum axis. Can be supported horizontally with respect to the field scene.

  As shown in FIGS. 1 and 3, a handling cylinder 21 is rotatably provided in a handling chamber of the threshing device 9. A handling cylinder 21 is pivotally supported on a handling cylinder shaft 20 extended in the front-rear 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 spiral screw blade-like intake blade 25 is provided on the outer peripheral surface of the front portion of the handling cylinder 21 so as to project outward in the radial direction.

  In the above-described configuration, the harvested cereal mash introduced from the handling port 9 a by the beater 18 is conveyed toward the rear of the traveling machine body 1 by the rotation of the handling cylinder 21, and between the handling cylinder 21 and the receiving net 24. Kneaded and threshed. The threshing of grains or the like smaller than the mesh of the receiving net 24 leaks from the receiving net 24. The sawdust and the like that do not leak from the receiving net 24 are discharged from the dust outlet 23 at the rear of the threshing device 9 to the field by the conveying action of the barrel 21. A plurality of dust feed valves (not shown) for adjusting the conveying speed of shed grains in the handling chamber are pivotally mounted on the upper side of the handling cylinder 21 so as to be rotatable. By adjusting the angle of the dust feeding valve group, the conveying speed (residence time) of threshing in the handling chamber can be adjusted according to the variety and properties of the harvested cereal.

  As a grain sorting mechanism 10 disposed below the threshing device 9, a rocking sorter 26 for specific gravity sorting having a grain pan, a chaff sheave, a Glen sheave, a Strollac and the like, and a tang that supplies sorting wind to the rocking sorter 26. And a fan 29. The threshing that has been threshed by the handling cylinder 21 and leaked from the receiving net 24 is caused by the specific gravity sorting action of the rocking sorter 26 and the wind sorting action of the Kara fan 29, and the grain (the most important thing such as a refined grain). Then, it is sorted out into a mixture of grain and straw (second thing such as grain with branches), and swarf waste.

  A first conveyor mechanism 30 and a second conveyor mechanism 31 are provided as the grain sorting mechanism 10 below the swing sorter 26. The grain (first thing) dropped from the swing sorter 26 by the sorting of the swing sorter 26 and the tang fan 29 is collected by the top sucker 6 by the first conveyor mechanism 30 and the cereal conveyor 32. The mixture of grains and straw (second product) is returned to the sorting start end side of the swing sorting plate 26 through the second conveyor mechanism 31 and the second reduction conveyor 33 and is re-sorted by the swing sorting plate 26. The Sawdust and the like are discharged from the dust outlet 23 at the rear of the traveling machine body 1 to the field.

  The cereal cylinder 34 extending vertically is connected to the feed end side of the first conveyor mechanism 30. A whipping conveyor 32 is provided in the whipping cylinder 34. A second return cylinder 35 that crosses the whipping cylinder 34 and extends back and forth is connected to the feed end side of the second conveyor mechanism 31. The whipping cylinder 34 and the second reduction cylinder 35 are located between the threshing device 9 and the top sucker 6. In the first embodiment, the second reduction cylinder 35 is arranged on the side close to the threshing device 5 so that the milling cylinder 34 and the second reduction cylinder 35 do not interfere with each other, and the flour raising cylinder 34 on the side close to the top sucker 6. Is arranged. In addition, the whipping cylinder 34 may be arrange | positioned at the side near the threshing apparatus 5, and the 2nd reduction | restoration cylinder 35 may be arrange | positioned at the side near the top sucker 6. Moreover, it is not always necessary to cross the whipping cylinder 34 and the second reduction cylinder 35.

  As shown in FIGS. 1 to 4 and 7, the cab 5 is provided with a control column 41 and a driver seat 42 on which an operator sits. The steering column 41 includes a control lever 43 for changing the course of the traveling machine body 1, a main transmission lever 44 and a sub-transmission lever 45 for switching the moving speed of the traveling machine body 1, and a cutting clutch lever for driving or stopping the cutting apparatus 3. 46 and a threshing clutch lever 47 for driving or stopping the threshing device 9 are arranged. A sunshade roof 48 (sun visor) that covers the upper side of the driver seat 42 is attached to the front upper portion of the top sucker 6.

  As shown in FIGS. 1, 2, 7 and 8, left and right track frames 50 are arranged on the lower surface side of the traveling machine body 1. The track frame 50 includes a drive sprocket 51 that transmits the power of the engine 7 to the crawler belt 2, a tension roller 52 that maintains the tension of the crawler belt 2, a plurality of track rollers 53 that hold the ground side of the crawler belt 2 in a grounded state, An intermediate roller 54 for holding the non-grounding side of the crawler belt 2 is provided. The front side of the crawler belt 2 is supported by the drive sprocket 51, the rear side of the crawler belt 2 is supported by the tension roller 23, the ground side of the crawler belt 2 is supported by the track roller 53, and the non-ground side of the crawler belt 2 is supported by the intermediate roller 54 Let

(2). Combine Drive Structure Next, a combine drive structure will be described with reference to FIG. As shown in FIG. 6, a transmission continuously variable transmission 64 having a hydraulic pump and a hydraulic motor (both not shown) is provided in the transmission case 63. The engine 7 is mounted on the front right side of the upper surface of the traveling machine body 1, and the mission case 63 is disposed on the left side of the engine 7. Further, an engine output belt 67 is wound around and connected to an output shaft 65 projecting leftward from the engine 7 and an input shaft 66 projecting leftward from the mission case 63. A charge pump 68 and a cooling fan 69 that drive the lifting hydraulic cylinder 4 and the like are attached to the engine 7, and the charge pump 68 and the cooling fan 69 are driven by the power of the engine 7.

  As shown in FIG. 6, a handling cylinder drive case 71 that pivotally supports the front end side of the handling cylinder shaft 20 is provided. A barrel driving case 71 is provided on the front wall of the threshing device 9. Further, a counter shaft 72 that drives the cutting device 3 and the handling cylinder 21 is pivotally supported on the handling cylinder drive case 71. A tang input pulley 83 is provided at the right end of the tang shaft 76 that supports the tang fan 29. A tang input pulley 83 at the right end of the tang shaft 76 is connected to the output shaft 65 of the engine 7 via a tension type threshing clutch 84 and a threshing drive belt 85. That is, the tang shaft 76 is connected to the output shaft 65 of the engine 7 via the threshing drive belt 85 so that power can be transmitted. Then, a barrel driving pulley 86 is provided on the left end portion of the Karatsu shaft 76 far from the engine 7.

  A counter input pulley 88 is disposed at the left end of the counter shaft 72 far from the engine 7. A counter input pulley 88 at the left end of the counter shaft 72 is connected to a handle driving pulley 86 of the rod shaft 76 via a constant-tension handling cylinder driving belt 87. A front end side of the barrel cylinder 20 is connected to a right end portion of a counter shaft 72 extending in the left-right direction via a bevel gear mechanism 75. The engine 7 is configured to transmit power from the engine 7 to the front end side of the barrel 20 through the counter shaft 72 and to rotate the barrel 21 in one direction. The threshing clutch 84 is turned on and off by the operation of the threshing clutch lever 47 by the operator. When the threshing clutch 84 is turned on, the handling cylinder 21 is driven via the counter shaft 72, and the harvested cereal mash introduced from the beater 18 is continuously threshed by the handling cylinder 21.

  The left end of the Karatsu shaft 76 is connected to the left end of the first conveyor shaft 77 in the first conveyor mechanism 30 and the left end of the second conveyor shaft 78 in the second conveyor mechanism 31 via the conveyor drive belt 111. Link. The left end portion of the second conveyor shaft 78 is connected to the left end portion of the crank-shaped swing drive shaft 79 that pivotally supports the rear portion of the swing sorting plate 26 via the swing sorting belt 112. By driving the whipping conveyor 32 via the first conveyor shaft 77, the first selected grain of the first conveyor mechanism 30 is collected in the top sucker 6. Further, by driving the second reduction conveyor 33 via the second conveyor shaft 78, the second sorted grain (second product) mixed with the sawdust of the second conveyor mechanism 31 is moved to the upper surface side of the swing sorting board 26. Returned to

  On the other hand, a beater shaft 82 that pivotally supports the beater 18 is provided. The left end portion of the beater shaft 82 is connected to the left end portion of the counter shaft 72 via the mowing drive belt 114 and the mowing clutch 115. A cutting input shaft 89 is provided as a conveyor input shaft that pivotally supports the feed terminal side of the supply conveyor 17. A forward / reverse switching case 121 (bearing means for the cutting input shaft 89) is provided on the left end of the cutting input shaft 89. A forward / reverse switching shaft 121 is provided with a forward / reverse rotation transmission shaft 122 and a forward / reverse rotation switching shaft 123 while the left end of the cutting input shaft 89 is inserted into the forward / reverse rotation switching case 121. The cutting input shaft 89 and the forward / reverse transmission shaft 122 are arranged coaxially. Further, the left end portion of the forward / reverse transmission shaft 122 is connected to the beater shaft 82 via the cutting drive chain 116.

  As shown in FIG. 6, a header drive shaft 91 is provided on the grain header 12. The right end of the cutting input shaft 89 is connected to the header drive shaft 91 via the header drive chain 90. A scraping shaft 93 that pivotally supports the scraping auger 13 is provided. A header drive shaft 91 is connected to the drive shaft 93 via a drive drive chain 92. A reel shaft 94 that pivotally supports the take-up reel 14 is also provided. A header drive shaft 91 is connected to the reel shaft 94 via an intermediate shaft 95 and reel drive chains 96 and 97. The cutting blade 15 is connected to the right end portion of the header driving shaft 91 via a cutting blade driving crank mechanism 98. By the operator's operation of the cutting clutch lever 46, the cutting clutch 115 is turned on and off, and the power transmission to the supply conveyor 17, the take-up auger 13, the take-up reel 14 and the cutting blade 15 is interrupted. The feed conveyor 17, the take-up auger 13, the take-up reel 14, and the cutting blade 15 are driven by the turning-on operation of the cut-off clutch 115, and the tip side of the uncut grain culm in the field is continuously cut.

(3). Engine and its peripheral structure Next, the engine 7 and its peripheral structure will be described with reference to FIGS. The engine 7 mounted on the front right side of the upper surface of the traveling machine body 1 includes a cylinder block 131 having a built-in output shaft 65 (see FIG. 9) and a piston (both not shown). A cylinder head 132 is mounted on the cylinder block 131. The engine 7 has a front surface set on the exhaust side and a rear surface set on the intake side. An exhaust manifold 133 is disposed on the front surface side of the cylinder head 132, and an intake manifold 134 is disposed on the rear surface side of the cylinder head 132. The upper surface side of the cylinder head 132 is covered with a head cover 135.

  The left and right ends of the output shaft 65 are protruded from the left and right sides of the cylinder block 131. A cooling fan 136 is provided on the right side of the engine 7. The power of the engine 7 is transmitted from the right protruding end side of the crankshaft 65 to the cooling fan 136 via a fan V-belt (not shown). A flywheel 137 is disposed on the left side surface of the engine 7. The flywheel 137 is attached to the left protruding end side of the output shaft 65. The power of the engine 7 is transmitted from the output shaft 65 via the flywheel 137 to each of the working parts 3, 9, 10 and the crawler belt 2 (traveling part) of the combine.

  An oil pan 138 for storing lubricating oil is disposed on the lower surface of the cylinder block 131. Lubricating oil in the oil pan 138 is supplied to each lubricating portion of the engine 7 through an oil filter 139 and the like disposed on the front side of the cylinder block 131, and then returns to the oil pan 138. Engine leg mounting portions 140 are provided on both front and rear sides of the cylinder block 131, respectively. Each engine leg mounting part 140 is bolted to an engine leg (not shown) with vibration-proof rubber. The engine 7 is supported in an anti-vibration manner on the mount frame of the traveling machine body 1 through each engine leg.

  As shown in FIGS. 10 and 11, an outside air introduction cover 141 is provided at a location on the opposite side of the engine 7 with respect to the cooling fan 136 (on the right side of the engine 7 in the first embodiment) of the traveling machine body 1. An outside air intake port 142 is formed in the upper part of the right side surface of the outside air introduction cover 141. A dustproof filter 143 is attached to the outside air inlet 142. An outside air discharge port 201 (see FIG. 28) is formed in the lower part of the left side surface of the outside air introduction cover 141. A radiator 144 for water cooling of the engine 7 is disposed between the cooling fan 136 and the outside air introduction cover 141. The radiator 144 is opposed to the cooling fan 136, and the radiator 144 is made to face the outside air discharge port 201 of the outside air introduction cover 141. The outside air is taken in through the outside air introduction cover 141 and the radiator 144 by the rotation of the cooling fan 136, whereby the above-described radiator 144 and the engine 7 are air-cooled.

  A muffler 145 is mounted on the exhaust manifold 133 disposed on the front side of the cylinder head 132. The muffler 145 has a cylindrical shape that is long in the left-right direction parallel to the output shaft 65 of the engine 7. An exhaust inlet portion 146 having a downward opening is provided in the longitudinal middle portion of the muffler 145. The outlet portion 147 of the exhaust manifold 133 protrudes upward from the vicinity of the left and right center. The exhaust inlet 146 of the muffler 145 is detachably fastened to the outlet 147 of the exhaust manifold 133. On the left side of the rear part of the muffler 145, an exhaust outlet part 148 having a rearward opening shape is provided. Although not shown, the tail pipe inlet side is connected to the exhaust outlet 148 of the muffler 145. The outlet side of the tail pipe extends rearward and obliquely downward toward the left and right crawler belts 2. The exhaust gas of the engine 7 moves from the exhaust manifold 133 to the tail pipe via the muffler 145 and is discharged to the outside from the exhaust port on the tail pipe outlet side.

  As shown in FIGS. 10 to 14, the intake / discharge side of the air cleaner 151 is connected to the inlet 149 of the intake manifold 134 disposed on the front side of the cylinder head 132 via the intake pipe 150. The intake side of the air cleaner 151 is connected to the precleaner 153 via the outside air introduction pipe 152. Both the air cleaner 151 and the precleaner 153 purify the air supplied to the engine 7. The precleaner 153 performs preliminary purification, and removes dust and the like that are relatively larger than dust removed by the air cleaner 151. External air (fresh air) taken into the air cleaner 151 from the pre-cleaner 153 is purified by dust removal, then sent to the intake manifold 134 of the engine 7 and supplied to each cylinder of the engine 7.

  In the first embodiment, an air cleaner 151 is mounted behind the driver seat 42 in the cab 5. The precleaner 153 is disposed on the rear side of the top sucker 6. An outside air introduction pipe 152 that connects the air cleaner 151 and the precleaner 153 connects one end side to the downstream flexible pipe 154 that connects one end side to the intake intake side of the air cleaner 151 and the other end side of the downstream flexible pipe 154. The rigid tube 155 and the upstream flexible tube 156 having one end connected to the other end of the rigid tube 155 are separately configured.

  Between the driver's cab 5 and the top sucker 6, a portion near one end of the downstream flexible tube 154 is bent from the rear to the left, and the middle portion of the downstream flexible tube 154 is extended to the left and right center side. Then, the portion near the other end of the downstream flexible tube 154 is bent from the left to the rear, and the other end of the downstream flexible tube 154 is placed on one end of the rigid tube 155 between the threshing device 5 and the whipping tube 34. Insert and connect. A substantially chevron-shaped mounting bracket 157 is fixed to the middle portion of the upper surface of the rigid tube 155 by welding. On the other hand, one end side of the suspension bracket 158 is welded and fixed to the midway portion of the whipping cylinder 33. The other end of the suspension bracket 158 is fastened to a fixed plate 159 provided on the right side wall of the threshing device 5. A mounting bracket 157 of the rigid tube 155 is fastened to a suspension support bracket 158 provided between the threshing device 5 and the milling cylinder 34, and the rigid tube 155 is supported by the suspension support bracket 158 in a suspended state (FIGS. 12 to 12). 15). In this case, the rigid tube 155 extends above the second reduction cylinder 35 (see FIGS. 12 and 13).

  One end of the upstream flexible tube 156 is fitted and connected to the other end of the rigid tube 155. The middle portion of the upstream flexible tube 156 is bent from the rear to the top. On the other hand, a cleaner column 161 is erected on the rear upper end side of the support frame 160 that supports the top sucker 6 from below. A suction opening 162 having a downward opening provided on the lower surface side of the pre-cleaner 153 is fastened to the upper end side of the cleaner column 161. The upstream other end of the upstream flexible tube 156 is fitted and connected to the intake / discharge portion 162 of the pre-cleaner 153. In the first embodiment, the whipping cylinder 34, the second reduction cylinder 35, and the precleaner 153 are positioned between the threshing device 9 and the top sucker 6. And the rigid pipe | tube 155 is accommodated in the clearance gap between the threshing apparatus 9 and the whipping cylinder 34 so that it may be located above the 2nd reduction | restoration cylinder 35, and the clearance gap between the threshing apparatus 9 and the threshing cylinder 34 is set | placed. Effective use (see FIGS. 12 to 14).

  As is clear from the above description and FIGS. 10 to 16, according to the first embodiment, from the threshing device 3, the threshing device 9, the traveling machine body 1 having the engine 7 and the cab 5, and the threshing device 9. In a combine provided with a tank 6 for collecting and storing grains, the cutting device 3 is arranged in front of the traveling machine body 1, the engine 7 is mounted on the front part of the traveling machine body 1, and the engine The cab 5 is positioned above the cab 7, the tank 6 is disposed behind the cab 5, and a precleaner 153 that preliminarily purifies the air supplied to the engine 7 is disposed on the rear side of the tank 6. Therefore, the precleaner 153 is far away from the operator on the cab 5, and the operator is less likely to be bothered by noise caused by the intake sound of the precleaner 153. It can be. In addition, the risk of the precleaner 153 sucking dust discharged from the reaping device 3 is reduced. For this reason, clogging of the pre-cleaner 153 due to dust hardly occurs, and the cleaning frequency of the pre-cleaner 153 can be lowered.

  Moreover, the said threshing apparatus 9 is installed in parallel at the right and left sides of the said tank 6, the threshing cylinder 34 which conveys a grain from the said threshing apparatus 9 to the said tank 6, and the 2nd reduced material are carried out from the said threshing apparatus 9. The second reduction cylinder 35 and the pre-cleaner 153 are arranged between the threshing device 9 and the tank 6, and the outside air introduction pipe 152 from the pre-cleaner 153 toward the engine 7 is Since it extends above the cylinder 35, the occupied space in the left-right width direction of the cerealing cylinder 34, the second reduction cylinder 35, and the outside air introduction pipe 152 can be reduced, and the threshing device 9 and the tank 6 In between, the said whipping cylinder 34, the said 2nd reduction | restoration cylinder 35, and the said external air introduction pipe | tube 152 (the said pre cleaner 153) can be arrange | positioned compactly. Moreover, it becomes possible to expand the occupied space of the said threshing apparatus 9 or the said tank 6 in the left-right width direction, without enlarging the left-right width direction of a combine, and without increasing the size of a combine, threshing ability and grain The storage capacity can be improved.

  Further, since the midway portion of the outside air introduction pipe 152 is supported by the cereal cylinder 34, there is no need to provide a separate support member such as a frame for attaching the outside air introduction pipe 152. The support structure can be simplified.

(4). Second Embodiment FIGS. 17 to 20 show a combine according to a second embodiment. Here, in the combine of 2nd Embodiment shown below, a structure and an effect | action are the same as that of 1st Embodiment, the same code | symbol is attached | subjected, and the detailed description is abbreviate | omitted. The second embodiment is different from the first embodiment in that a Glen tank 166 is mounted behind the cab 5 (on the right side of the traveling machine body 1) instead of the top sucker 6 as a tank. The grain (first thing) sorted by the grain sorting mechanism 10 is collected in the glen tank 166 by the first conveyor mechanism 30 and the grain raising conveyor 32 in the grain cylinder 34. The whipping cylinder 34 and the second reduction cylinder 35 are located between the threshing device 9 and the glen tank 166.

  The precleaner 153 of the second embodiment is disposed on the rear side of the Glen tank 166. In this case, a discharge auger 167 that discharges grains in the grain tank 166 toward the truck bed (or container or the like) is provided behind the grain tank 166 in the traveling machine body 1. The discharge auger 167 is configured to be tiltable outwardly from the lower end side as a fulcrum. The grain in the Glen tank 166 is discharged by the discharge auger 167 tilted toward the outside of the machine. An auger support base 168 that supports the discharge auger 167 in an upright state is provided on the rear side of the Glen tank 166. The cleaner support column 161 is erected on the auger support base 168, and the intake air discharge portion 162 of the pre-cleaner 153 is fastened to the upper end side of the cleaner support column 161. The upstream other end of the upstream flexible tube 156 is fitted and connected to the intake / discharge portion 162 of the pre-cleaner 153.

  In the second embodiment, the whipping cylinder 34, the second reduction cylinder 35, and the precleaner 153 are positioned between the threshing apparatus 9 and the glen tank 166. And the attachment bracket 157 of the rigid body pipe | tube 155 is fastened to the suspension support bracket 158 provided between the threshing apparatus 5 and the milling cylinder 34, and the rigid body pipe | tube 155 is supported by the suspension support bracket 158 in a suspended state. Also when comprised as mentioned above, the effect similar to the case of 1st Embodiment is acquired.

(5). Next, after returning to the first embodiment, a structure for assembling the muffler 145 as an exhaust system member to the engine 7 will be described with reference to FIGS. As described above, the cylindrical muffler 145 that is long in the left-right direction parallel to the output shaft 65 of the engine 7 is mounted on the exhaust manifold 133 disposed on the front side of the cylinder head 132 in the engine 7.

  An exhaust inlet portion 146 as an exhaust gas inlet pipe having a downward opening is provided in the middle part of the muffler 145 by welding or the like. An inlet flange 146a is provided on the exhaust gas inlet side of the exhaust inlet portion 146 in the muffler 145 at the outlet portion 147 (exhaust gas outlet side) of the exhaust manifold 133 protruding upward from the vicinity of the left and right center. The inlet flange 146a of the exhaust inlet portion 146 is superimposed on the outlet portion 147 (exhaust gas outlet side) of the exhaust manifold 133 protruding upward from the vicinity of the left and right center, and the inlet of the exhaust inlet portion 146 is overlapped with the outlet portion 147 of the exhaust manifold 133. The flange 146a is detachably fastened by a bolt 169 and a nut 170. Exhaust gas from the exhaust manifold 133 is supplied to the muffler 145 through the exhaust inlet 146. The exhaust manifold 133 also functions as a support body that supports the muffler 145. In this case, the exhaust manifold 133 supports the midway portion of the muffler 145 through the exhaust inlet portion 146.

  The inlet flange 146 a of the exhaust inlet 146 and the outer peripheral surface of the muffler 145 are connected by a pair of front and rear reinforcing plate plates 171. Both reinforcing plate plates 171 improve the connection strength (welding strength) between the muffler 145 and the exhaust inlet portion 146, and prevent breakage due to stress concentration on the root side (welding fixing side) of the exhaust inlet portion 146. It is.

  As shown in FIGS. 21 to 24, the engine 7 includes a first end bracket body 172 and a second end side bracket body 173 as a pair of support brackets for supporting and fixing the muffler 145. The one end side bracket body 172 and the other end side bracket body 173 are formed wide in a direction intersecting with the output shaft 3 of the engine 1. The one end side bracket body 172 is detachably fixed to the exhaust manifold 133 of the engine 7. The other end side bracket body 173 is detachably fixed to the cylinder head 132 of the engine 7. The one end side bracket body 172 and the other end side bracket body 173 are erected on the left side and the right side parallel to the output shaft 3 on the front side of the cylinder head 132. The one end side bracket body 172 is located on the front left side of the cylinder head 132 (left side of the exhaust manifold 133) and supports one end side of the muffler 145. The other end side bracket body 173 is located on the front right side of the cylinder head 132 and supports the other end side of the muffler 145. One end portion in the longitudinal direction and the other end portion in the longitudinal direction of the muffler 145 are supported by both bracket bodies 172 and 173 so as to be sandwiched from both sides. Accordingly, the muffler 145 of the first embodiment is supported at three points by the pair of bracket bodies 172 and 173 and the outlet portion 147 (exhaust gas discharge side) of the exhaust manifold 133.

  As shown in FIGS. 21 to 24, the one end side bracket body 172 is substantially L-shaped and is disposed on the left side of the front surface of the cylinder head 132 as described above. In this case, the mounting base 174 is fixed to the left side of the exhaust manifold 133 by welding. The horizontal plate portion 172a of the one end side bracket body 172 is overlaid on the upper surface side of the mounting base 174, and both 174 and 172a are fastened together with bolts 175 and nuts 176. An embedded bolt 177 is provided on the lower left side of the muffler 145. The embedding bolt 177 protrudes leftward from the left side surface of the muffler 145. Bolt holes 178 are formed in the vertical plate portion 172 b of the one end side bracket body 172. An embedded bolt 177 on the muffler 145 side is inserted into the bolt hole 178 of the vertical plate portion 172 b, and a lock nut 179 is screwed into the embedded bolt 177 to connect the left side surface side of the muffler 145 and the one end side bracket body 172.

  As shown in FIGS. 21 to 24, the other end side bracket body 173 has a substantially L shape in which the left and right wide plates 173a and the front and rear wide plates 173b are connected to each other. It is arranged on the front right side (cooling fan 9 side). The lower end side of the left and right wide plate 173a of the other end side bracket body 173 is fastened to the right side of the front surface of the cylinder head 5 without the exhaust manifold 133 with a bolt 180. An embedded bolt 181 is provided on the lower right side of the muffler 145. The embedded bolt 181 is protruded right outward from the right side surface of the muffler 145. Bolt holes 182 are formed in the front and rear wide plate 173b of the other end side bracket body 173. The embedded bolt 181 on the muffler 145 side is inserted into the bolt hole 182 of the front and rear wide plate 173a, and a retaining nut 183 is screwed into the embedded bolt 181 to connect the right side surface side of the muffler 145 and the other end side bracket body 173. In this case, the combination of the embedded bolts 178 and 181 and the set nuts 179 and 183 corresponds to a fastener that fastens in the longitudinal direction of the muffler 145. By combining the embedded bolts 178 and 181 and the set nuts 179 and 183, the longitudinal ends of the muffler 145 (left and right ends) and the corresponding bracket bodies 172 and 173 are fastened in the longitudinal direction of the muffler 145. doing. For this reason, it is possible to adjust the tightening force when the exhaust system member 145 is attached by adjusting the fastening nuts 179 and 183 with respect to the embedded bolts 178 and 181.

  According to said structure, the combine provided with the traveling body 1 which has the engine 7 and the cab 5, the reaping device 3, the threshing device 9, and the tank 8 which collects and stores a grain from the said threshing device 9. The engine 7 includes a pair of support brackets 172 and 173 that support an exhaust system member 145 that exhausts the exhaust of the engine 7 to the outside. The support brackets 172 and 173 are cylinder heads of the engine 7. 132 and the exhaust manifold 133, and one end in the longitudinal direction and the other end in the longitudinal direction of the exhaust system member 145 are supported so as to be sandwiched from both sides by the support brackets 172, 173. The exhaust system member 145 can be supported with high rigidity by the head 132 and the exhaust manifold 133, and vibration of the engine 7 can be achieved. The damage to the exhaust system member 145 by can be suppressed.

  Further, the exhaust system member 145 is provided with an exhaust inlet portion 146 as an exhaust gas inlet pipe, and an inlet flange 146a on the exhaust gas inlet side of the exhaust inlet portion 146 is positioned in the midway portion of the exhaust system member 145, Since the inlet flange 146a of the exhaust inlet portion 146 is connected to the outlet portion 147 on the exhaust gas exhaust side of the exhaust manifold 133, the pair of support brackets 172 and 173 and the outlet portion 147 (exhaust portion of the exhaust manifold 133). The exhaust system member 145 can be stably supported with high rigidity on the upper portion of the engine 7 by the three-point support with the gas discharge side). Therefore, the effect of preventing damage to the exhaust system member 145 due to vibration of the engine 7 or the like becomes extremely high.

  Further, the longitudinal ends of the exhaust system member 145 and the corresponding support brackets 172 and 173 are connected by fasteners 177, 179, 181 and 183 that tighten in the longitudinal direction of the exhaust system member 145. Therefore, the tightening force when the exhaust system member 145 is attached can be adjusted, and deformation and breakage of the exhaust system member 145 due to the tightening force can be prevented.

(6). Next, the cooling air passage structure of the engine 7 according to the first embodiment will be described with reference to FIGS. 10, 11, and 25 to 30. An outside air introduction cover 141 is provided on the right side of the engine 7. The outside air introduction cover 141 is a hollow casing. An outside air intake 142 is formed in the upper part of the right side surface of the outside side of the outside air introduction cover 141. A dustproof filter 143 is attached to the outside air inlet 142. An outside air discharge port 201 is formed in the lower part of the left side surface inside the outside air introduction cover 141. In the first embodiment, a recess 200 that is recessed toward the inside of the outside air introduction cover 141 is formed in the lower part of the left side of the outside air introduction cover 141 on the inside of the machine, and an outside air discharge port 201 is formed in the recess 200. An auxiliary filter 202 is attached to the outside air discharge port 201. The radiator 144 is exposed to the outside air discharge port 201 through the auxiliary filter 202.

  An oil cooler 203 for cooling the hydraulic oil is disposed on the lower side in the outside air introduction cover 141 so as to face the radiator 144. In this case, the outside air introduction cover 141 and the oil cooler 203 are connected by a pair of upper and lower connecting stays 205 that extend along the width direction (front-rear direction) of the oil cooler 203. That is, as shown in FIGS. 26 to 30, a pair of upper and lower horizontal rail bars 204 are bridged on the lower side in the outside air introduction cover 141. A connecting stay 205 having a substantially L-shaped cross section along the width direction (front-rear direction) of the oil cooler 203 is fixed to both upper and lower side surfaces of the oil cooler 203 formed in a substantially rectangular shape by welding or the like. A plurality of anti-vibration rubbers 206 are arranged between the upper and lower connecting stays 205 and the corresponding cross rail bars 204, and these three members 204 to 206 are fastened together at a plurality of locations by bolts 207 and nuts 208. The oil cooler 203 is disposed in the outside air introduction cover 141 in an inclined posture so that the oil cooler 203 falls to the inside of the airframe as it goes from the lower side to the upper side. For this reason, compared with the oil cooler in the vertical posture, the airflow from the outside air intake port 142 is easy to blow against the wide surface on the outside air intake side of the oil cooler 203, and the pressure loss and the air volume drop due to the presence of the oil cooler 203 are reduced. The The anti-vibration rubber 206 is forcibly fitted into a plurality of insertion holes formed in the upper and lower connecting stays 205.

  According to the above configuration, since the oil cooler 203 is arranged on the outside air intake side of the radiator 144 and the oil cooler 203 is attached inside the outside air introduction cover 141, the outside air is taken into consideration in consideration of the cooling efficiency of the cooling air by the cooling fan 136. The oil cooler 203 can be arranged in a compact and functional manner by effectively using the inside of the introduction cover 141, and the utilization efficiency of the space for mounting the engine 7 can be improved. The oil cooler 203 can be arranged as far as possible from the radiator 144, and the cooling air can be evenly supplied to the outside air intake side of the radiator 144. This contributes to improving the heat dissipation efficiency of the radiator 144. In particular, in the first embodiment, the outside air introduction cover 141 and the oil cooler 203 are connected by the pair of upper and lower connecting stays 205. Therefore, the mounting of the oil cooler 203 inside the outside air introduction cover 141 is performed by the pair of upper and lower connecting stays 205. There is an advantage that high mounting strength can be secured.

  A wind direction plate 210 is disposed above the upper connecting stay 205 in the outside air introduction cover 141. The airflow direction plate 210 deflects the air flow from the outside air intake port 142 toward the outside air intake side of the oil cooler 203. The wind direction plate 210 of 1st Embodiment is formed in the cross-sectional substantially square shape. The upper side of the wind direction plate 210 is bolted to the upper side of the inner surface of the recess 200 of the outside air introduction cover 141. The lower side of the wind direction plate 210 is inclined so as to approach the wide side of the oil cooler 203 on the outside air intake side, and the upper connecting stay 205 that supports the upper side of the oil cooler 203 and the fastening portion between the upper horizontal rail bar 204 Shielding above. The presence of the airflow direction plate 210 prevents the airflow from the outside air intake 142 from flowing directly to the radiator 144 side. In addition, a shielding plate 211 is provided on the lower side of the outside air inlet 142 in the outer introduction cover 141 to prevent the air from the outside air inlet 142 from blowing against the upper horizontal bar 204. The shielding plate 211 also has a function of guiding the air flow from the outside air intake port 142 to the outside air intake side of the oil cooler 203 in cooperation with the wind direction plate 210.

  According to the above configuration, the wind direction plate 210 that deflects the air flow from the outside air intake port 142 toward the outside air intake side of the oil cooler 203 is arranged above the upper connection stay 205 in the outside air introduction cover 141. Thus, the air from the outside air intake port 142 can be smoothly supplied to the outside air intake side of the oil cooler 203 by the wind direction plate 210 without directly sending it to the radiator 144 side, and the heat dissipation efficiency of the oil cooler 203 can be improved. The air direction plate 210 makes it difficult for the air from the outside air inlet 142 to flow directly to the radiator 144 side, and there is little possibility of generating a reverse airflow that returns from the radiator 144 to the oil cooler 210. As a result, vibration of the oil cooler 210 can be suppressed, and the risk of damage to the connecting stay 205, which is an attachment portion of the oil cooler 210, is reduced.

(7). Others Next, other structures adopted in the combine of the first embodiment will be described with reference to FIG. A cover plate 212 for blindfolding is arranged between the top sucker 6 and the cradle cradle 8 at a location near the threshing device 9. Similarly, a blindfold cover plate 212 is also arranged on the back side of the cab 5. These cover plates 212 have a role of preventing the exposure of the right side (the inner side of the machine body) of the engine 7 and the threshing device 9 to make it inconspicuous and improving the aesthetics. In addition, it prevents the heat from the engine 7 and exhaust heat of the exhaust gas discharged from the tail pipe from moving to the saddle cradle 8 side, thereby reducing the influence on workers on the cradle cradle. .

  In addition, the structure of each part in this invention is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention.

1 traveling body 2 crawler track (traveling section)
3 Cutting device 5 Driver's cab 6 Top sucker (tank)
7 Engine 9 Threshing device 136 Cooling fan 138 Oil pan 141 Outside air introduction cover 142 Outside air intake port 143 Dust-proof filter 144 Radiator 200 Recess 201 Outside air discharge port 203 Oil cooler 204 Horizontal rail bar 205 Connection stay 206 Anti-vibration rubber 207 Bolt 208 Nut 210 Wind direction plate

Claims (3)

A traveling machine body having an engine and a cab, a reaping device, a threshing device, and a tank that collects and stores grains from the threshing device, a cooling fan is provided on one side of the left and right sides of the engine, and the cooling In the combine which arranges the outside air introduction cover on the right and left outside of the fan, and provides the radiator between the cooling fan and the outside air introduction cover,
An oil cooler is disposed on the outside air intake side of the radiator, and the oil cooler is attached to the inside of the outside air introduction cover.
Combine. The outside air introduction cover and the oil cooler are connected by a pair of upper and lower connecting stays that are long along the width direction of the oil cooler.
The combine according to claim 1. Forming an outside air inlet at the upper part of the left and right outer side surfaces of the outside air introduction cover, positioning the oil cooler on the lower side in the outside air introduction cover, above the upper connecting stay inside the outside air introduction cover, A wind direction plate is disposed to deflect the flow of air from the outside air intake to the outside air intake side of the oil cooler;
The combine according to claim 2.

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