JP2013031405A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester in which the center of gravity of a machine body is set near the center in the lateral width direction of the traveling machine body 1 by approaching an engine 7 to a threshing apparatus 9 while improving the maintenance operation efficiency of a traveling hydraulic pump 65.SOLUTION: The combine harvester includes: a reaping device 3; a threshing apparatus 9 having a threshing cylinder 21; the traveling machine body 1 having a traveling part 2; and a hydraulic transmission device 66 having the traveling hydraulic pump 65 and a traveling hydraulic motor 69, wherein the engine 7 is mounted to the traveling machine body 1 and the output of the engine 7 is transmitted to the traveling part 2 through the hydraulic transmission device 66. The engine 7 is mounted on the upper surface of the traveling machine body 1 at the side of the threshing apparatus 9. In addition, the traveling hydraulic pump 65 is arranged on the outer surface of the engine 7, which is an opposite surface to the surface facing the threshing apparatus 9.

Description

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

  Conventionally, a traveling machine body having a traveling unit and a driver's seat, a reaping device having a cutting blade, a threshing device having a handling cylinder, a feeder house for supplying reaped cereals from the reaping device to the threshing device, and an engine for driving each unit And a grain sorting mechanism for sorting the threshing material of the threshing device, and a grain tank that collects the grain of the threshing device, and there is a technology for continuously harvesting and threshing the uncut cereal grains in the field (Patent Document) 1). In addition, a technique of providing a hydraulic transmission device having a traveling hydraulic pump and a traveling hydraulic motor and driving the crawler traveling device by the hydraulic transmission device is also known (see Patent Document 2).

JP 2008-263865 A JP 2005-82084 A

  In the prior art disclosed in Patent Document 1, since the engine is mounted on the front part of the traveling aircraft (below the driver's seat), a traveling hydraulic pump or the like is located near the center of the aircraft that is difficult to maintain among the locations adjacent to the engine. And the maintenance workability of the traveling hydraulic pump cannot be improved. In the prior art disclosed in Patent Document 2, since the traveling hydraulic pump is disposed near the center of the lateral width of the traveling machine body, the hydraulic pipe length between the traveling hydraulic motor and the traveling hydraulic pump provided in the left and right crawler traveling devices is set. Although it can be formed equally, the power transmission mechanism from the engine to the operation parts such as the traveling hydraulic pump or the threshing device is also arranged near the center of the lateral width of the traveling machine body, and there is a problem that the maintenance workability of the power transmission mechanism cannot be improved.

  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 a first aspect of the present invention includes a harvesting device, a threshing device having a handling cylinder, a traveling machine body having a traveling unit, a hydraulic transmission device having a traveling hydraulic pump and a traveling hydraulic motor. The engine is mounted on the traveling machine body, and the engine is mounted on the upper surface of the traveling machine body on the side of the threshing device in a combine that transmits the output of the engine to the traveling unit via a hydraulic transmission. In addition, the traveling hydraulic pump is disposed on the outer surface of the engine opposite to the surface facing the threshing device, of the side surfaces of the engine.

  According to a second aspect of the present invention, in the combine according to the first aspect, a grain take-out work table is provided on the front side of the engine room in which the engine is installed, of the upper surface of the traveling machine body. The hydraulic piping is extended from the traveling hydraulic pump toward the traveling hydraulic motor so as to bypass the front side.

  According to a third aspect of the present invention, in the combine according to the first aspect, an engine is mounted on a rear portion of the traveling machine body, and an output shaft of the engine and a drive shaft of a traveling hydraulic pump are disposed in the rearward direction of the traveling machine body. It is extended and connected with a belt.

  According to a fourth aspect of the present invention, in the combine according to the third aspect, a counter shaft is provided in an engine room frame in which the engine is installed, and the engine is disposed between the traveling hydraulic pump and the counter shaft. Is.

  According to a fifth aspect of the present invention, in the combine according to the fourth aspect, the counter shaft includes a first counter shaft and a second counter shaft, and the engine room frame above the first counter shaft is provided with the second counter shaft. And configured to transmit engine power to the barrel shaft of the threshing device via the first counter shaft and the second counter shaft.

  According to the first aspect of the present invention, a reaping device, a threshing device having a handling cylinder, a traveling machine body having a traveling unit, a hydraulic transmission device having a traveling hydraulic pump and a traveling hydraulic motor, In the combine which mounts an engine and transmits the output of the engine to the traveling part via a hydraulic transmission, the engine is mounted on the upper surface of the threshing device side of the upper surface of the traveling machine body, and the engine Since the traveling hydraulic pump is disposed on the outer surface of the machine opposite to the surface facing the threshing device, the traveling hydraulic pump is removed from the machine by removing a part of the engine room cover, for example. The threshing device is brought close to the threshing device while being easily exposed toward the vehicle and improving the maintenance workability of the traveling hydraulic pump. You can set the aircraft center of gravity closer to the center of the left and right width direction of the line aircraft. In addition, in a general combine cooling air intake structure in which a cooling air passage for taking cooling air (outside air) into the engine is formed at a high position on the outer surface of the machine (the upper part of the machine body away from the field surface with much dust) By utilizing the space below the cooling air passage, hydraulic components such as the traveling hydraulic pump and piping can be installed in a compact manner. Furthermore, the hydraulic oil temperature of the traveling hydraulic pump can be properly maintained by using the cooling air of the engine, and the hydraulic transmission efficiency can be improved.

  According to the invention described in claim 2, a grain take-out work table is provided on the front side of the engine room in which the engine is installed, of the upper surface of the traveling machine body, so as to bypass the front side of the engine room, Since the hydraulic piping is extended from the traveling hydraulic pump toward the traveling hydraulic motor, the hydraulic piping can be assembled between the engine room and the grain take-out work table, and the assembly workability of the hydraulic piping can be improved. Or maintenance workability can be improved.

  According to a third aspect of the present invention, an engine is mounted on the rear part of the traveling machine body, and the output shaft of the engine and the drive shaft of the traveling hydraulic pump are extended in the rear direction of the traveling machine body to connect the belt. Therefore, transmission belts are respectively extended in the left and right direction from the engine toward the respective working parts such as the traveling hydraulic pump or the threshing device, and mechanical vibrations associated with torque fluctuations of the engine can be reduced. However, replacement work of the transmission belt can be performed from the rear of the traveling machine body, and maintenance workability of the transmission belt and the like can be improved.

  According to a fourth aspect of the present invention, a counter shaft is provided in an engine room frame in which the engine is installed, and the engine is disposed between the traveling hydraulic pump and the counter shaft. Since transmission belts are respectively extended in the left-right direction from the engine toward the hydraulic pump and the counter shaft, vibrations caused by torque fluctuations of the engine can be reduced. Engine power can be easily distributed from the counter shaft to the threshing device or grain tank.

  According to the fifth aspect of the present invention, the counter shaft includes a first counter shaft and a second counter shaft, the second counter shaft is provided in an engine room frame above the first counter shaft, and the first counter shaft Since the engine power is transmitted to the barrel shaft of the threshing device via the second counter shaft, the engine is bypassed in the threshing device by bypassing the waste discharging section on the rear side of the threshing device. The output shaft can be connected to the belt, and the power of the engine can be easily transmitted to the rear portion of the barrel shaft. The drive mechanism of the threshing apparatus can be assembled in a compact manner by utilizing the engine room frame without impairing the waste discharging function of the threshing apparatus.

It is a left view of the combine which shows 1st Embodiment of this invention. It is a right view of the combine. It is a top view of the combine. It is a drive system figure of the combine. It is a rear view of the drive part of a combine. It is the perspective view which looked at the drive part from back. It is a right view of an engine installation part. It is a right view of an engine and a traveling drive part. It is a top view of a travel drive part. It is a hydraulic circuit diagram of a combine. It is the perspective view which looked at the engine and the traveling drive part from the right front. It is the perspective view which looked at the engine and the traveling drive part from the left front. It is the perspective view which looked at the pump case from the right front. It is a right view of an engine and a pump case. It is the perspective view seen from the upper right side of an engine and a pump case.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 3) applied to a normal combine. 1 is a left side view of the combine, FIG. 2 is a right side view thereof, and FIG. 3 is a plan view thereof. First, the general structure of the 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 3, the ordinary combine in the embodiment includes a traveling machine body 1 supported by a pair of left and right iron crawler belts 2 as a traveling portion. At the front part of the traveling machine body 1, a reaping device 3 for capturing uncut cereal grains such as rice (or wheat, soybeans or corn) is mounted by a single-acting lifting / lowering hydraulic cylinder 4 so as to be adjustable up and down. ing. The crawler belt 2 may be formed by a rubber crawler.

  A driver's cab 5 on which an operator is boarded is mounted on the front of the traveling machine body 1. A Glen tank 6 for storing the grain after threshing is disposed behind the cab 5. An engine 7 as a power source is disposed behind the Glen tank 6. On the right side of the rear part of the Glen tank 6, a grain discharge auger 8 is provided so as to be able to turn. The grain in the Glen tank 6 is configured so as to be carried out, for example, to a truck bed, a container, or the like from the throat throw opening 8a at the tip of the discharge auger 8. On the other side (left side in the embodiment) of the traveling machine body 1 is mounted a threshing device 9 for threshing the harvested cereal meal supplied from the harvesting device 3. In the lower part of the threshing device 9, a grain sorting mechanism 10 for performing swing sorting and wind sorting is arranged.

  The reaping device 3 includes a feeder house 11 that communicates with a handling port 9 a at the front part of the threshing device 9, and a horizontally long bucket-like grain header 12 that is continuously provided at the front end of the feeder house 11. A scraping auger 13 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 feeder conveyor 17 is provided in the feeder house 11. Between the feed end of the supply conveyor 17 and the handling opening 9a, a beater cereal throwing beater 18 is provided. In addition, the lower surface part of the feeder house 11 and the front end part of the traveling machine body 1 are connected via the lifting hydraulic cylinder 4, and the reaping device 3 moves up and down by the lifting hydraulic cylinder 4.

  With the above configuration, the tip side of the uncut grain culm between the left and right weed bodies 16 is scraped by the scraping reel 14, and the heel side of the uncut grain culm is cut by the cutting blade 15, and the rotation of the scraping auger 13. By driving, the grain headers 12 are collected in the vicinity of the center of the left and right width. The whole amount of the harvested cereal meal of the grain header 12 is conveyed by the supply conveyor 17 and is configured to be put into the handling port 9a of the threshing device 9 by the beater 18. The grain header 12 is provided with a horizontal control hydraulic cylinder 19 for rotating the grain header 12 around the horizontal control fulcrum shaft 19a, and the grain header 12, The cutting blade 15 and the take-up reel 14 are supported horizontally with respect to the field scene.

  Moreover, as shown in FIGS. 1-3, the handling cylinder 21 is rotatably provided in the handling chamber of the threshing apparatus 9. As shown in FIG. 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 that allows grains to leak is stretched. In addition, a spiral screw blade-shaped intake blade 25 projects outward in the radial direction on the outer peripheral surface of the front portion of the handling cylinder 21.

  With the above configuration, the harvested cereal mash introduced from the handling port 9 a is kneaded between the handling cylinder 21 and the receiving net 24 while being conveyed toward the rear of the traveling machine body 1 by the rotation of the handling cylinder 21 and threshing. Is done. 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 at the rear of the threshing device 9 to the field by the conveying action of the handling cylinder 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 feed valve, the conveying speed (residence time) of threshing in the handling chamber can be adjusted according to the variety and properties of the harvested cereal. On the other hand, the grain sorting mechanism 10 disposed below the threshing device 9 includes a rocking sorter 26 for specific gravity sorting having a grain pan, a chaff sheave, a grain sheave, a Strollac, and the like.

  In addition, the grain sorting mechanism 10 includes a tang fan 29 that supplies sorting wind. The threshing that has been threshed by the handling cylinder 21 and leaked from the receiving net 24 is the first thing (grains) such as cereal grains by the specific gravity sorting action of the swing sorter 26 and the wind sorting action of the Kara fan 29. In addition, it is configured to be sorted into dust (such as re-sorted items) such as grain with branches and leaflets, and sawdust.

  A first conveyor mechanism 30 and a second conveyor mechanism 31 are provided on the lower side of the swing sorter 26 as the grain sorting mechanism 10. By selecting the swing sorter 26 and the tang fan 29, the first item such as the grain dropped from the swing sorter 26 is collected in the glen tank 6 by the first conveyor mechanism 30 and the cereal conveyor 32. A second thing such as a grain with a branch is returned to the sorting start end side of the swing sorting board 26 via the second conveyor mechanism 31 and the second reduction conveyor 33 and is re-sorted by the swing sorting board 26. . The sawdust and the like are configured to be discharged from the dust outlet 34 at the rear of the traveling machine body 1 to the field.

  Further, as shown in FIGS. 1 to 3, the cab 5 is provided with a control column 41 and a driver seat 42 on which an operator sits. The control column 41 includes left and right speed change levers 43 and 44 as control levers for changing the course of the traveling machine body 1 and changing the moving speed, and the reaping device 3 is moved up and down by tilting in the front-rear direction. A harvesting posture lever 45 for tilting and raising and lowering the take-up reel 14, an accelerator lever 46 for controlling the rotation of the engine 7, and a grain discharge lever 47 for operating the grain discharge auger 8 are arranged. A cutting clutch lever 39 for turning on and off the power transmission to the reaping device 3 and a threshing clutch lever 40 for turning on and off the power transmission to the threshing device 9 are also arranged. Further, a roof 49 for awning is attached to the upper side of the cab 5 via a support column 48.

  As shown in FIG. 1, 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 that holds the non-grounding side of the crawler belt 2 is provided. The rear side of the crawler belt 2 is supported by the drive sprocket 51, the front side of the crawler belt 2 is supported by the tension roller 52, the grounding side of the crawler belt 2 is supported by the track roller 53, and the non-grounded side of the crawler belt 2 is supported by the intermediate roller 54 To be configured.

  Moreover, as shown in FIGS. 1-3, the bottom feed conveyor 60 arrange | positioned at the bottom part of the Glen tank 6 and the vertical feed conveyor 61 arrange | positioned at the rear part of the Glen tank 6 are provided. The left and right bottom feed conveyors 60 extend in the front-rear direction at the bottom of the grain tank 6 and convey the grains at the bottom of the grain tank 6 toward the lower end side of the vertical feed conveyor 61 provided vertically. The vertical feed conveyor 61 is extended in the vertical direction at the rear part of the grain tank 6, and conveys the grain from the upper end side of the vertical feed conveyor 61 toward the feed start end side of the grain discharge auger 8 on the right side of the grain tank 6. The grain in the Glen tank 6 is configured to be conveyed to the throat throwing port 8a at the leading end (feeding end side) of the discharge auger 8.

  The grain discharge auger 8 is supported on the upper end side of the vertical feed conveyor 61 so as to be rotatable in the vertical direction. The side of the grain discharge auger 8 that is the feed terminal side is configured to be movable up and down. In addition, it is configured such that the side of the spear throwing hole 8a can be moved around the conveyor axis of the vertical feed conveyor 61 (horizontal direction). That is, the hull throwing opening 8a side is moved to the front lower side of the traveling machine body 1, and the grain discharge auger 8 is stored in the right side of the cab 5 and the Glen tank 6 via the auger rest 8b. On the other hand, the side of the grain discharge auger 8, which is the feed terminal side, is raised, the side of the traveling machine body 1 is moved to the side or rear of the traveling machine body 1, and the side of the traveling machine body 1 is moved to the side or rear of the traveling machine body 1. The grain discharge auger 8 is made to project, the pallet throwing port 8a is made to face the truck bed or container, and the grain in the glen tank 6 is carried out to the truck bed or container.

  Next, the drive structure of the combine will be described with reference to FIGS. 4 to 6 and FIG. As shown in FIG. 4 to FIG. 6, a travel speed change pump case 66 having a pair of swash plate variable left and right travel hydraulic pumps 65 is provided. The engine 7 is mounted on the upper surface of the right rear portion of the traveling machine body 1, and the pump case 66 is disposed on the upper surface of the traveling machine body 1 on the right side of the engine 7. Also, left and right reduction gear cases 63 are provided at the rear ends of the left and right track frames 50, respectively. A traveling hydraulic motor 69 is disposed in each of the left and right reduction gear cases 63. A travel drive input shaft 64 projecting rearward from the pump case 66 and an output shaft 67 projecting rearward from the engine 7 are connected via a travel output belt 230. The engine 7 and the pump case 66 are provided on the upper surface side of the traveling machine body 1 on the rear side of the threshing device 9, and the engine 7 is disposed between the threshing device 9 and the pump case 66.

  A charge pump 68 that drives the lifting hydraulic cylinder 4 and the like of the reaping device 3 is also provided on the same axis 64 as the traveling hydraulic pump 65. Further, the working hydraulic pump 70 for operating the lifting hydraulic cylinder 4 of the reaping device 3 or the horizontal control hydraulic cylinder 19 of the reaping device 3 is provided, the working hydraulic pump 70 is disposed in the engine 7, and the traveling hydraulic pump 65 is provided. In the same manner, the charge pump 68 and the working hydraulic pump 70 are driven by the engine 7.

  With the above configuration, the drive output of the engine 7 is transmitted to the left and right traveling hydraulic pump 65 via the output shaft 67. The left and right traveling hydraulic motors 69 are individually driven by the left and right traveling hydraulic pumps 65, and the left and right crawler belts 2 are moved forward and backward by the left and right traveling hydraulic motors 69. Further, the rotational speed of the left and right traveling hydraulic motor 69 is controlled, and the rotational speed of the left and right crawler belts 2 driven by the left and right traveling hydraulic motor 69 is varied to change the moving direction (traveling path) of the traveling machine body 1 and It is configured to perform direction changes on the ground.

  That is, as shown in FIG. 10, a pair of left and right traveling hydraulic motors 69 are hydraulically connected to the left and right traveling hydraulic pumps 65 via a closed loop hydraulic circuit 261. The left and right crawler belts 2 are driven in the forward direction or the reverse direction via the drive sprocket 51 by the left and right traveling hydraulic motor 69. The operator operates the left and right shift levers 43 and 44 to adjust the angle of the output adjustment swash plate 65a (shift control) of the left and right traveling hydraulic pumps 65, respectively. The rotation direction is changed, and the left and right crawler belts 2 are driven independently of each other, so that the traveling machine body 1 moves forward or backward.

  As shown in FIGS. 4 to 9, an engine room 57 is formed by the engine room frame 56, and the engine 7 is installed in the engine room 57. A threshing input first counter shaft 71 is pivotally supported on the engine room frame 56 via a first bearing body 58. Further, a second countershaft 72 for threshing input is pivotally supported on the engine room frame 56 via the second bearing body 59. The first counter shaft 71 is connected to the output shaft 67 of the engine 7 via the work output belt 231. A second countershaft 72 is connected to the first countershaft 71 via a threshing drive belt 232. The power of the engine 7 is transmitted from the first counter shaft 71 to the second counter shaft 72 via the threshing clutch 233 also serving as a tension roller and the threshing drive belt 232. The threshing clutch 233 is controlled to be turned on and off by the operator's lever operation. Further, a second counter shaft 72 is connected to one end side (rear end side) of the barrel shaft 20 via a barrel driving belt 234. By the turning-on / off operation of the threshing clutch 233, the handling cylinder 21 is driven and controlled via the second counter shaft 72, and the cereal mash introduced from the beater 18 is continuously threshed by the handling cylinder 21. .

  Further, a cutting selection input case 73 is provided on the front wall of the threshing device 9. A cutting selection input shaft 74 is pivotally supported on the cutting selection input case 73. One end side (right end portion) of the cutting selection input shaft 74 is connected to the other end side (front end side) of the barrel 20 via a bevel gear 75. The other end side (left end portion) of the cutting selection input shaft 74 is connected to the left end portion of the beater shaft 82 on which the beater 18 is pivotally supported via the beater drive belt 238. The left end portion of the beater shaft 82 is connected to the left end portion of the hot shaft 76 supporting the hot fan 29 via a selection input belt 235. A tang shaft 76 is connected to the left end of the first conveyor shaft 77 of the first conveyor mechanism 30 and the left end of the second conveyor shaft 78 of the second conveyor mechanism 31 via a conveyor drive belt 237. . A left end portion of a second conveyor shaft 78 is connected to a left end portion of a crank-like swing drive shaft 79 pivotally supported by the rear portion of the swing sorting plate 26 via a swing sorting belt 236. The cereal conveyor 32 is driven via the first conveyor shaft 77, and the first selected grain of the first conveyor mechanism 30 is collected in the glen tank 6. In addition, the second reduction conveyor 33 is driven via the second conveyor shaft 78, and the second selected grain mixed with the sawdust from the second conveyor mechanism 31 is returned to the upper surface side of the rocking sorter 26.

  On the other hand, the left end portion of the cutting input shaft 89 on which the feed end side of the supply conveyor 17 is pivotally connected is connected to the left end portion of the beater shaft 82 via a cutting drive belt 241 and a cutting clutch 242. The right end of the cutting input shaft 89 is connected to the header drive shaft 91 provided on the grain header 12 via the header drive chain 90. A header drive shaft 91 is connected to a drive shaft 93 that supports the drive auger 13 via a drive drive chain 92. A header drive shaft 91 is connected to a reel shaft 94 that supports the take-up reel 14 via an intermediate shaft 95 and reel drive chains 96 and 97. Further, 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 turning-on / off operation of the mowing clutch 242, the feed conveyor 17, the auger 13, the hoisting reel 14, and the cutting blade 15 are driven and controlled so as to continuously mow the tip of the uncut grain culm in the field. It is configured.

  Further, as shown in FIG. 4, the rear end side of the bottom feed conveyor shaft 103 of the bottom feed conveyor 60 is connected to the rear end portion of the first counter shaft 71 via the grain discharge belt 244 and the grain discharge clutch 245. Let One end side of the lower mediation shaft 105 is connected to the rear end portion of the bottom feed conveyor shaft 103 via a longitudinal feed drive chain 104. The other end side of the mediation shaft 105 is connected to the lower end side of the vertical feed conveyor shaft 106 of the vertical feed conveyor 61 via a bevel gear mechanism 107. One end side of the upper intermediate shaft 109 is connected to the upper end side of the vertical feed conveyor shaft 106 via a bevel gear mechanism 108. One end side of the grain discharge shaft 111 is connected to the other end side of the upper mediation shaft 109 via the grain discharge drive chain 110. The feed start end side of the discharge auger shaft 112 of the grain discharge auger 8 is connected to the other end side of the grain discharge shaft 111 via a bevel gear mechanism 113. The bottom feed conveyor 60, the vertical feed conveyor 61, and the grain discharge auger 8 are driven and controlled by the turning-on / off operation of the grain discharge clutch 245 so that the grains in the glen tank 6 are discharged to a truck bed or a container. It is composed.

  Further, as shown in FIG. 2, front and rear grain discharge ports 221 and 222 are provided at the bottom of the Glen tank 6. Moreover, the wrinkle receiving base 223 is arrange | positioned so that insertion / extraction is possible in the traveling machine body 1 upper surface side below the grain discharge ports 221,222. An operator other than the operator of the driver's seat 42 gets on the heel support 223 with the heel support 223 supported in a horizontal working posture, and attaches a heel bag (not shown) to the heel support bar 224. The grain in the Glen tank 6 is discharged into the bag. The straw bag filled with the grain is dropped from the straw tray 223 to the field and collected.

  With the above configuration, the grains in the grain tank 6 can be discharged without interrupting the mowing and threshing operation by discharging the grains in the grain tank 6 from the grain discharge ports 221 and 222. That is, compared with the work of discharging the grain in the grain tank 6 from the grain discharge auger 8, there is almost no need to interrupt the mowing and threshing work. Work efficiency can be improved.

  Next, the hydraulic structure of the combine will be described with reference to FIG. As shown in FIG. 10, as the hydraulic actuator, the harvesting lifting hydraulic cylinder 4, the horizontal control hydraulic cylinder 19, the left and right reel lifting hydraulic cylinders 251 that support the take-up reel 14 to be lifted and lowered, and the grain An auger lifting / lowering hydraulic cylinder 252 that supports the discharge auger 8 to be movable up and down is provided. The working hydraulic pump 70 is hydraulically connected to the horizontal control hydraulic cylinder 19 via the horizontal control electromagnetic hydraulic valve 253. Based on the operator's operation of a horizontal control switch (not shown) or the detection result of a left / right tilt sensor (not shown), the horizontal control hydraulic cylinder 19 is actuated to set the tilt angle in the left / right direction of the traveling machine 1 horizontally or arbitrarily. Keep at an angle.

  Further, the working hydraulic pump 70 is hydraulically connected to the cutting lift hydraulic cylinder 4 via the cutting lift manual hydraulic valve 255. By the operation of tilting the cutting posture lever 45 in the front-rear direction, the cutting lifting / lowering hydraulic cylinder 4 is actuated so that the operator moves the cutting device 3 up and down to an arbitrary height (for example, cutting height or non-working height). It is configured. On the other hand, the working hydraulic pump 70 is hydraulically connected to the reel lifting hydraulic cylinder 251 through the reel lifting manual hydraulic valve 256. The operation of tilting the harvesting posture lever 45 in the left-right direction actuates the reel lifting hydraulic cylinder 251 and the operator moves the take-up reel 14 up and down to an arbitrary height so as to harvest uncut grain culm on the field. doing.

  On the other hand, the working hydraulic pump 70 is hydraulically connected to the auger lifting hydraulic cylinder 252 via the auger lifting manual hydraulic valve 257. By a tilting operation of the grain discharge lever 47 in the front-rear direction, the auger lifting / lowering hydraulic cylinder 252 is operated, and the operator moves the cocoon throwing port 8a of the grain discharging auger 8 up and down to an arbitrary height. In addition, the grain discharge auger 8 is rotated in the horizontal direction by an electric motor (not shown), and the cocoon throwing port 8a is moved in the horizontal direction. In other words, the hull throwing port 8a is positioned above the truck bed or container, and the grains in the grain tank 6 are discharged into the truck bed or container.

  Further, as shown in FIG. 10, left and right traveling hydraulic motors 69 are hydraulically connected to the left and right traveling hydraulic pumps 65 via left and right closed loop hydraulic circuits 261, respectively. The left and right speed change levers 43 and 44 are connected to the output adjusting swash plate 65a of the left and right traveling hydraulic pumps 65 via a servo valve mechanism 262, respectively, and are proportional to the front and rear tilt angles of the left and right speed change levers 43 and 44. Thus, the support angle of the output adjusting swash plate 65a is changed. That is, the left and right traveling hydraulic motors 69 are respectively driven by the left and right traveling hydraulic pumps 65, and the driving force of the left and right traveling hydraulic motors 69 is transmitted to the left and right crawler belts 2 via the reduction gear mechanism 263 of the reduction gear case 63, respectively. The left and right crawler belts 2 are driven forward or backward.

  With the above configuration, by tilting the left and right shift levers 43 and 44 forward, the vehicle can move straight forward in the forward direction at a vehicle speed proportional to the tilt angle of the left and right shift levers 43 and 44. By tilting the left and right speed change levers 43 and 44 toward the rear of the machine body, the left and right speed change levers 43 and 44 can be moved straight in the backward (reverse) direction at a vehicle speed proportional to the tilt angle of the left and right speed change levers 43 and 44. On the other hand, when the left and right speed change levers 43 and 44 have different inclination angles to the front of the body, or when the left and right speed change levers 43 and 44 have different inclination angles to the rear of the body, When one of the 44 is tilted forward of the aircraft and the other is tilted backward of the aircraft, the course of the traveling aircraft 1 can be corrected in the left-right direction.

  In other words, when the operation amount or the operation direction of the left and right speed change levers 43 and 44 are made different, the difference in the tilt angle of the left and right speed change levers 43 and 44 at a vehicle speed proportional to the tilt angle of the left and right speed change levers 43 and 44. The traveling machine body 1 can be swung in the left-right direction with a turning radius proportional to. The left and right closed loop hydraulic circuits 261 are connected to the high pressure oil discharge side of the charge pump 68 via the oil cooler 264 and the line filter 265 so that the hydraulic oil in the oil tank 266 is supplied to the left and right closed loop hydraulic circuits 261. It is configured. An oil tank 266 is mounted on the upper surface of the traveling machine body 1 on the left side of the fuel tank 267 of the engine 7, and the driver's seat 42 is disposed above the fuel tank 267 via a seat frame 268.

  Further, as shown in FIGS. 7, 8, 11, 13 to 15, the engine 7 mounted on the right upper surface of the rear portion of the traveling machine body 1 on the right side of the threshing device 9 mounted on the left upper surface of the traveling machine body 1. The pump case 66 is fixed to the upper surface side of the traveling machine body 1 via a front support body 271 and a rear support body 272 on the right outer side. A charge pump 68 is disposed in front of the pump case 66, and the front part of the pump case 66 is supported on the traveling machine body 1 by a front support 271. The rear side of the pump case 66 is bolted to the front side of the rear support 272. The travel drive input shaft 64 protrudes rearward from the rear surface of the pump case 66.

  As shown in FIGS. 11 to 13, an oil cooler 264 is supported on the front portion of the engine room frame 56. From the pump case 66 on the right side of the engine room frame 56, the oil cooler 264 and the left and right sides below the engine room frame 56 are left and right. A hydraulic piping 269 is extended to bypass the front part of the engine room frame 56 in the traveling hydraulic motor 69 and the oil tank 266 at the front part of the traveling machine body 1. Further, as shown in FIGS. 7 and 8, a water cooling radiator 283 of the engine 7 and an air cooling cooling fan 284 of the engine 7 and the radiator 283 are arranged on the front side of the engine 7 at the rear side of the oil cooler 264. To do.

  Further, as shown in FIGS. 7 and 8, the cooling air passage (outside air intake passage) of the engine 7 from the side opposite to the threshing device 9 to the front of the radiator 283 and the cooling fan 284 in the side of the engine 7. The cover duct body 285 is formed. The cover duct body 285 is formed by a side duct 286 located on the right side of the engine 7 and a front duct 287 located in front of the radiator 283 and the cooling fan 284. The side duct 286 and the front duct 287 are fixed to the right side and the front part of the engine room frame 56, and the side duct 286 and the front duct 287 are extended in an L shape in plan view.

  On the other hand, an outside air intake port 288 is provided with a side cover 289 formed in the upper half. A side cover 289 is detachably fixed to the right side portion of the engine room frame 56 to which the side duct 286 is fixed. A right side opening (machine outer side surface) of the side duct 286 is covered with a side cover 289. With the rotation of the cooling fan 284, the outside air taken in from the outside air intake 288 at the height of the airframe moves into the engine room 57 via the side duct 286 and the front duct 287, and cools the engine 7 and the like. It is configured as follows. The warm air in the engine room 57 is discharged in the vertical direction or the left-right direction of the engine 7, and part of the warm air in the engine room 57 is discharged from the pump case 66 toward the outside of the engine 7. At the same time as the air cooling action, the pump case 66 is also cooled by air.

  Further, as shown in FIGS. 5 and 7, the height of the bottom of the side duct 286 is formed higher than the height of the bottom of the front duct 287. A pump case 66 is mounted on the traveling machine body 1 below the side duct 286. The lower half of the side cover 289 covers the right side of the engine 7 and the right side of the pump case 66, and the upper half of the side cover 289 covers the right side of the side duct 286. When the side cover 289 is removed from the engine room frame 56, the right side of the engine 7, the right side of the pump case 66, and the right side of the side duct 286 are configured to be exposed to the right side of the body.

  With the configuration described above, the side cover 289 can be removed, and maintenance around the engine 7, maintenance around the pump case 66, or maintenance around the side duct 286 can be executed from the outer right side of the traveling machine body 1. In addition, maintenance around the hydraulic piping 269 or maintenance around the front duct 287 can be performed from the side of the saddle cradle 223.

  As shown in FIGS. 1, 5, and 7, the reaping device 3, the threshing device 9 having the handling cylinder 21, the traveling machine body 1 having the crawler belt 2 as the traveling unit, the traveling hydraulic pump 65 and the traveling hydraulic motor 69 are provided. In a combine that includes a pump case 66 as a hydraulic transmission having the engine 7 mounted on the traveling machine body 1 and transmits the output of the engine 7 to the crawler belt 2 via the pump case 66, threshing of the upper surface of the traveling machine body 1. The engine 7 is mounted on the upper surface on the side of the device 9, and the traveling hydraulic pump 65 is disposed on the outer surface of the engine 7 opposite to the surface facing the threshing device 9. Therefore, for example, by removing a part of the engine room cover (side cover 289) or the like, the traveling hydraulic pump 65 can be easily exposed to the outside of the machine, and the maintenance workability of the traveling hydraulic pump 65 can be improved. However, the engine 7 is brought close to the threshing device 9 so that the center of gravity of the vehicle body can be set closer to the center of the traveling vehicle body 1 in the left-right width direction. Also, a general combine cooling air intake structure in which a cooling air passage for taking cooling air (external cold air) into the engine 7 is formed at a high position on the outer surface of the machine (the upper part of the machine body away from the field surface with much dust). Then, by utilizing the space below the cooling air passage, hydraulic components such as the traveling hydraulic pump 65 and the hydraulic pipe 269 can be installed in a compact manner. Further, the hydraulic oil temperature of the traveling hydraulic pump 65 can be properly maintained by using the cooling air of the engine 7, and the hydraulic transmission efficiency can be improved.

  As shown in FIGS. 7, 11, and 12, on the front side of the engine room 57 in which the engine 7 is installed on the upper surface of the traveling machine body 1, a cradle receiving table 223 is provided as a grain extraction work table. A hydraulic pipe 269 is extended from the traveling hydraulic pump 65 toward the traveling hydraulic motor 69 so as to bypass the front side of the traveling hydraulic motor. Therefore, the hydraulic piping 269 can be assembled between the engine room 57 and the rod support 223, and the assembly workability or maintenance workability of the hydraulic piping 269 can be improved.

  As shown in FIGS. 5, 6, and 15, the engine 7 is mounted on the rear portion of the traveling machine body 1, and the output shaft 67 of the engine 7 and the drive shaft (traveling drive input shaft 64) of the traveling hydraulic pump 65 are connected to the traveling machine body 1. It extends in the rearward direction and is connected by a travel output belt 230. Therefore, transmission belts (running output belt 230, threshing drive belt 232) are extended from the engine 7 in the left-right direction toward the respective working parts such as the traveling hydraulic pump 65 or the threshing device 9, and accompanying torque fluctuations of the engine 7, etc. Although the mechanical vibration can be reduced, the transmission belt can be exchanged from the rear of the traveling machine body 1 and the maintenance workability of the transmission belt can be improved.

  As shown in FIGS. 5, 12, and 13, a first counter shaft 71 is provided in an engine room frame 56 in which the engine 7 is installed, and the engine 7 is mounted on the traveling machine body 1 between the traveling hydraulic pump and the first counter shaft 71. Is arranged. Accordingly, since the transmission belts (travel output belt 230, threshing drive belt 232) extend from the engine 7 in the left-right direction toward the travel hydraulic pump 65 and the first counter shaft 71, the torque varies with the engine 7. Vibration can be reduced. The power of the engine 7 can be easily distributed from the first counter shaft 71 to the threshing device 9 or the grain tank 6 (grain tank).

  As shown in FIGS. 5, 12, and 13, a first counter shaft 71 and a second counter shaft 72 are provided as counter shafts provided in the engine room frame 56, and a second counter shaft is provided on the engine room frame 56 above the first counter shaft 71. A counter shaft 72 is provided, and the power of the engine 7 is transmitted to the barrel shaft 20 of the threshing device 9 via the first counter shaft 71 and the second counter shaft 72. Therefore, the output shaft 67 of the engine 7 can be connected to the threshing device 9 by the threshing driving belt 232 and the handling cylinder driving belt 234, bypassing the waste discharging section on the rear side of the threshing device 9. The power of the engine 7 can be easily transmitted to the rear part. The drive mechanism of the threshing device 9 can be assembled in a compact manner by utilizing the engine room frame 56 without impairing the sewage discharging function of the threshing device 9.

1 traveling body 2 crawler track (traveling section)
3 Cutting device 7 Engine 9 Threshing device 20 Handle cylinder 21 Handle cylinder 56 Engine room frame 57 Engine room 64 Travel drive input shaft (drive shaft of travel hydraulic pump)
65 Traveling hydraulic pump 66 Pump case (hydraulic transmission)
67 Engine Output Shaft 69 Traveling Hydraulic Motor 71 First Counter Shaft 72 Second Counter Shaft 223 Grain Receiving Base (Grain Extracting Worktable)
230 Traveling output belt 269 Hydraulic piping

Claims (5)

A reaping device, a threshing device having a handling cylinder, a traveling machine body having a traveling unit, a hydraulic transmission device having a traveling hydraulic pump and a traveling hydraulic motor, an engine mounted on the traveling machine body, and a hydraulic transmission being installed in the traveling unit In a combine that transmits engine output through a device,
The engine is mounted on the upper surface of the traveling machine body on the side of the threshing device, and the traveling hydraulic pump is disposed on the outer surface of the engine opposite to the surface facing the threshing device. Combine that is characterized by that.   Of the upper surface of the traveling machine body, a grain take-out work table is provided on the front side of the engine room in which the engine is installed, and hydraulic pressure is applied from the traveling hydraulic pump toward the traveling hydraulic motor so as to bypass the front side of the engine room. The combine according to claim 1, wherein piping is extended.   The engine is mounted on a rear part of the traveling machine body, and an output shaft of the engine and a drive shaft of a traveling hydraulic pump are extended in a rearward direction of the traveling machine body and connected to a belt. Combine.   The combine according to claim 3, wherein a counter shaft is provided in an engine room frame in which the engine is installed, and the engine is disposed between the traveling hydraulic pump and the counter shaft.   The counter shaft includes a first counter shaft and a second counter shaft, a second counter shaft is provided in an engine room frame above the first counter shaft, and the threshing device is provided via the first counter shaft and the second counter shaft. The combine according to claim 4, wherein the combine is configured to transmit engine power to the barrel shaft.

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