JP5775695B2 - Combine - Google Patents

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 take-up reel and a cutting blade, a threshing device having a handling cylinder, a feeder house for supplying the harvested cereal from the reaping device to the threshing device, and each part Is equipped with an engine that drives the threshing machine, a grain sorting mechanism that sorts the threshing material of the threshing device, and a grain tank that collects the grain of the threshing device, and a technology for continuously harvesting and threshing uncut cereal grains in the field Yes (Patent Document 1). Further, a technique for driving the left and right crawler belts by operating the left and right traveling hydraulic motors with the left and right traveling hydraulic pumps is also known (see Patent Document 2).

JP 2007-159468 A JP 2005-82084 A

  In the harvesting operation using the combine shown in Patent Document 1, the traveling machine body is moved at a predetermined speed, and the cutting apparatus is moved up and down while preventing the left-right width cutting by the operation of turning the traveling machine body left and right. It is necessary to cut the predetermined height position of the uncut cereals in the field with a cutting blade and take in the cereals in the field by the operation of raising and lowering the take-up reel. However, in the prior art disclosed in Patent Document 1 or Patent Document 2, since a control lever and a take-up reel lift lever are provided in the control column in front of the driver's seat, a traveling speed change lever for changing the vehicle speed with the left hand of the operator When operating the take-up reel raising / lowering lever while operating etc., it is necessary for the operator to switch the take-up reel raising / lowering lever with the right hand holding the control lever. For example, when both the control lever and the take-up reel lift lever are operated, it is necessary to hold the control lever with the left hand and the pick-up reel lift lever with the right hand. That is, in the structure of Patent Document 1 in which the operating lever is also operated to move up and down and the mowing device is moved up and down, the operator operates the operating lever with the left hand, and the operator takes the right hand while moving up and down the mowing device. Since it is necessary to operate the reel lifting lever to raise and lower the take-up reel, not only the cutting operation cannot be simplified, but also the traveling speed change lever for changing the vehicle speed cannot be operated during the cutting operation. . Therefore, there is a problem that the harvesting workability cannot be improved in a field where the traveling shift lever operation is required, such as a field where the grain ridge is partially lying down.

  Therefore, the present invention seeks to provide a 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 reaping device, a threshing device having a handling cylinder, and a traveling machine body having a driver's seat, and supplies cereals from the reaping device to the threshing device. The harvesting operation lever is provided in the steering column in front of the driver seat, the left and right traveling shift levers are provided in the steering column on the side of the driver seat, and the left and right traveling portions are operated by operating the left and right traveling shift levers. Each is configured to be controllable, and includes a grain tank that collects the grain of the threshing device, and a grain discharge conveyor that discharges the grain in the grain tank to the outside of the machine, and as the harvesting operation lever, A mowing posture lever that moves up and down the mowing device and a grain discharging lever that moves the grain discharging conveyor up and down are installed on the steering column in front of the driver seat. The single lever support has a base portion of the cutting position lever, which is constituted so as to support the base of the grain discharge lever.

Invention according to claim 2, in combine of claim 1, wherein the established a forward harvesting hydraulic valve unit body steering column of the driver's seat, the reaper hydraulic valve for reaper lifting switched by the attitude lever And a hydraulic valve for a discharge conveyor that is switched by operating the grain discharge lever, is provided in the hydraulic valve unit body for harvesting work.

According to a third aspect of the present invention, there is provided the combine according to the first aspect, wherein a work clutch lever is provided in a steering column on one side rear of the driver seat, and the threshing clutch mechanism installed at the rear part of the traveling machine body includes the traveling The structure is such that the working clutch lever at the front of the machine body is connected, and the threshing clutch mechanism is connected to the working clutch lever by a connecting rod.

  According to the invention described in claim 1, in the combine that includes a reaping device, a threshing device having a handling cylinder, and a traveling machine body having a driving seat, the chopping device supplies the cereal to the threshing device, and the operation is performed. The harvesting operation lever is provided in the steering column in front of the seat, the left and right traveling shift levers are provided in the steering column on the side of the driver seat, and the left and right traveling sections can be controlled by operating the left and right traveling shift levers, respectively. As a result, the operator sitting on the driver's seat can switch the left and right traveling shift levers by left-hand operation, and the harvesting operation lever can be switched by the right-hand operation of the operator, improving maneuverability. it can. For example, in a structure provided with a take-up reel, the operator can operate the harvesting lever with the right hand to raise and lower the harvesting device while raising and lowering the harvesting device, while the operator moves the left and right travel shift levers with the left hand The vehicle speed (moving speed) can be changed by a shift operation while changing the course by a left / right turning operation. A cutting posture operation of a cutting device provided with a take-in reel or the like can be simplified. It is possible to improve the cutting workability in a field that requires a vehicle speed (moving speed) change operation or a course change operation, such as a field where grain cereals are partially lying down.

In addition , the structure includes a grain tank that collects the grain of the threshing device and a grain discharge conveyor that discharges the grain in the grain tank to the outside of the machine. A cutting lever that moves, and a grain discharge lever that moves up and down the grain discharge conveyor, while a single lever support installed in a steering column in front of the driver seat has a base of the cutting posture lever Since it is configured to support the base of the grain discharge lever, the support structure of the cutting posture lever and the grain discharge lever can be easily configured by the lever support. The cutting posture lever and the grain discharging lever can be assembled in the steering column in a state where the cutting support lever and the grain discharging lever are supported by the lever support. The attaching / detaching workability of the cutting posture lever and the grain discharging lever can be improved.

According to the second aspect of the present invention, a harvesting hydraulic valve unit body is installed in the steering column in front of the driver's seat, and the harvesting lifting hydraulic valve is switched by operating the harvesting posture lever, and the grain discharge lever. Since the hydraulic valve for the discharge conveyor to be switched by the operation is provided in the hydraulic valve unit body for harvesting operation, the hydraulic valve for harvesting operation can be centrally arranged in the front column. The cutting lift lever and the discharge conveyor hydraulic valve can be easily connected to the cutting posture lever and the grain discharge lever. Assembling or disassembling of the cutting lift hydraulic valve and the discharge conveyor hydraulic valve can be simplified, and the maintenance workability of the cutting lift hydraulic valve and the discharge conveyor hydraulic valve can be improved.

According to a third aspect of the present invention, a work clutch lever is provided in a steering column at one side rear of the driver seat, and the threshing clutch mechanism installed at the rear part of the traveling machine body includes the working clutch at the front part of the traveling machine body. Since it is a structure for connecting a lever and the threshing clutch mechanism is connected to the working clutch lever by a connecting rod, a belt tension roller that is low in cost and easy to maintain can be used as the threshing clutch mechanism. . By operating the connecting rod push-pull operation of the working clutch lever, the high tension belt tension roller required for high torque input of the threshing device can be accurately switched to the threshing clutch entering position or the cutting position. A connection structure between the working clutch lever at the front part of the traveling machine body and the threshing clutch mechanism at the rear part of the traveling machine body can be configured at low cost. The manufacturing cost of the threshing clutch mechanism and the operation structure can be reduced. Handling workability such as assembly / disassembly or maintenance of the threshing clutch mechanism and the operation structure can be improved.

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 left view of a traveling body. It is a top view of a traveling body. It is the perspective view which looked at the cab from the front. It is a hydraulic circuit diagram of a combine. It is a side view of a traveling speed-shift lever attaching part. It is the perspective view which looked at the traveling shift lever attachment part from the front. It is the perspective view which looked at the traveling shift lever attachment part from back. It is an enlarged side view of a travel drive part. It is the perspective view which looked at the cutting posture lever attachment part of the steering column from the front. It is the expansion perspective view which looked at the cutting posture lever attachment part of the steering column from back. It is the perspective view which looked at the working clutch lever attachment part of the steering column from the front. It is the perspective view which looked at the working clutch lever attachment part of the steering column from back. It is the perspective view which looked at the threshing clutch attachment part from the front. It is principal part expansion explanatory drawing of FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings (FIGS. 1 to 3) applied to an ordinary 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, a schematic structure of a combine will be described with reference to FIGS. 1 to 3. 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.

  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 conveyor 8 is provided so as to be rotatable. 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. Further, under the control of the reel lifting / lowering hydraulic cylinder 251 described later, the take-up reel 14 moves up and down around the reel lifting / lowering fulcrum shaft 250.

  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 FIG. 1 thru | or FIG. 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 for allowing the 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 selected by the specific gravity sorting action of the swing sorter 26 and the wind sorting action of the Kara fan 29, and the first sort (grain etc.) and sorting. It is configured to be sorted into second items (grains and the like in which branch rafts are mixed) and sorted third items (such as 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 and 7, the cab 5 is provided with a control column 41 and a driver seat 42 on which an operator sits. The front column 41a as the control column 41 is provided with a cutting posture lever 45 for raising and lowering the cutting device 3 by tilting in the front-rear direction and raising and lowering the take-up reel 14 by tilting in the left and right direction, and rotation of the engine 7. An accelerator lever 46 to be controlled and a grain discharge lever 47 for moving the grain discharge conveyor 8 up and down are arranged. A horizontal movement switch 37 for turning the grain discharge conveyor 8 is provided on the rear side of the grain discharge lever 47. A guard frame 5a that is gripped when the operator who sits on the driver's seat 42 is in a standing posture extends so as to surround the upper side and the left and right sides of the front column 41a. Further, a roof 49 for awning is attached to the upper side of the cab 5 via a support column 48. The support column 48 and an auger rest 8b described later are fixed to the front wall of the glen tank 8.

  The side column 41b as the steering column 41 is provided with left and right traveling speed change levers 43 and 44 as steering levers for changing the course of the traveling machine body 1 and changing the moving speed. As shown in FIG. 7, at the rear end of the side column 41b, there is a cutting clutch lever 39 (working clutch lever) for turning on and off the power transmission of the cutting device 3, and a threshing clutch for turning on and off the power transmission of the threshing device 9. A lever 40 (work clutch lever) is disposed. Further, a brake pedal 38 for crawler belt 2 braking is provided below the front portion of the side column 41b.

  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 FIG. 1 thru | or FIG. 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 conveyor 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 tip (feeding end side) of the discharge conveyor 8.

  The feed start end of the grain discharge conveyor 8 is supported on the upper end side of the vertical feed conveyor 61 so as to be rotatable in the vertical direction. The cocoon throwing port 8a side which is a feed terminal part of the grain discharge conveyor 8 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 port 8a side is moved to the front lower side of the traveling machine body 1, and the grain discharge conveyor 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 feed discharge end of the grain discharge conveyor 8 is raised on the side of the spear spout 8a, the spear spout 8a is moved to the side or rear of the traveling machine body 1, and the grain is moved to the side or rear of the traveling machine body 1. The discharge conveyor 8 is protruded, the pallet throwing port 8a is opposed to 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. 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 left 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 an engine output belt 231. 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 pump case 66 is disposed between the engine 7 and the threshing device 9.

  A charge pump 68 that supplies hydraulic oil to a closed loop hydraulic circuit 261 (a hydraulic circuit that connects the traveling hydraulic motor 69 to the traveling hydraulic pump 65), which will be described later, is also provided on the same axis 64 as the traveling hydraulic pump 65. Further, a working hydraulic pump 70 for operating the lifting hydraulic cylinder 4 or the horizontal control hydraulic cylinder 19 is disposed in the engine 7, and the charge pump 68 and the working hydraulic pump 70 are connected to the engine 7 in the same manner as the traveling hydraulic pump 65. It is comprised so that it may drive.

  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, 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 or backward direction by the left and right traveling hydraulic motor 69 via the drive sprocket 51. The operator operates the left and right traveling speed change levers 43 and 44 to adjust the swash plate angles (shift control) of the left and right traveling hydraulic pumps 65, whereby the rotational speed or rotational direction of the left and right traveling hydraulic motors 69 can be adjusted. The left and right crawler belts 2 are driven independently from each other, and the traveling machine body 1 is configured to move forward, backward, or turn.

  As shown in FIG. 4, a barrel driving case 71 that supports a threshing input shaft 72 is provided. A threshing input shaft 72 is connected to a travel drive input shaft 64 as a counter shaft via a threshing drive belt 232. The power of the engine 7 is transmitted from the travel drive input shaft 64 to the threshing input shaft 72 via a tension roller 233 as a threshing clutch and a threshing drive belt 232. The threshing clutch 233 is controlled to be turned on and off by the operation of the threshing clutch lever 40 by the operator. Further, a threshing input shaft 72 is connected to one end side (rear end side) of the barrel 20 via a barrel drive belt 234. By the turning-on / off operation of the threshing clutch 233, the handling cylinder 21 is driven and controlled via the threshing input shaft 72, and the cereal straw thrown 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. The 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 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. To the left end of the first conveyor shaft 77 of the first conveyor mechanism 30 and to the left end of the second conveyor shaft 78 of the second conveyor mechanism 31, a tang shaft 76 is connected via a conveyor drive belt 237 (selection drive belt). Are connected. 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 sorter 26 via a swing sorting belt 236 (sorting drive belt). . The cereal conveyor 32 is driven via the first conveyor shaft 77, and the first selected item (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 sorted product (grains mixed with swarf) of the second conveyor mechanism 31 returns to the upper surface side of the swing sorter 26. And sorted again.

  On the other hand, the left end portion of the beater shaft 82 is connected to the left end portion of the cutting input shaft 89 on which the feed end side of the supply conveyor 17 is pivotally supported via a cutting drive belt 241 and a tension roller type cutting clutch 242. doing. 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.

  As shown in FIGS. 1 and 4, the engine 7 is mounted on the rear part of the traveling machine body 1, and the power of the engine 7 is transmitted to the rear end side of the handling cylinder shaft 20 on which the handling cylinder 21 is pivotally supported. The power of the engine 7 is transmitted from the front end side of the engine 20 to the cutting device 3 and the beater 18, the beater 18 is driven via the barrel shaft 20, and the cutting device 3 is driven via the beater 18. Therefore, by arranging the engine 7 at the rear part of the traveling machine body 1, the front-rear balance of the traveling machine body 1 can be improved, and the large reaping device 3 having a wide cutting width can be stably supported. That is, it is possible to improve harvesting workability in wet fields or mobility on rough roads. Further, since the power of the engine 7 is transmitted to the beater 18 and the reaping device 3 using the handling cylinder 20, even if the reaping device 3 and the engine 7 are provided apart from each other, the engine 7 is connected to the beater 18 or the reaping device 3. The transmission path can be easily configured. That is, the maintenance workability of the drive structure such as the reaping device 3 or the threshing device 9 can be improved.

  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 travel drive input shaft 64 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 conveyor 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 conveyor 8 are driven and controlled by turning on and off the grain discharge clutch 245 so that the grains in the grain 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 rides on the saddle cradle 223 in a state where the saddle cradle 223 is supported in a horizontal working posture, and attaches a saddle bag to a saddle catcher (not shown). 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. That is, by discharging the grain in the grain tank 6 from the grain outlets 221, 222, the grain in the grain tank 6 can be discharged without interrupting the mowing and threshing operation. Compared with the work of discharging the grain in the grain tank 6 from the grain discharge conveyor 8 to the truck bed outside the field, there is almost no need to interrupt the mowing and threshing work, so the time for interrupting the mowing and threshing work in the harvesting work ( The time for moving between the mowing place and the truck bed can be shortened, and the harvesting work efficiency can be improved.

  Next, the hydraulic structure of the combine will be described with reference to FIG. As shown in FIG. 8, 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 so as to be lifted and lowered, and the grain An auger elevating hydraulic cylinder 252 that moves up and down the discharge conveyor 8. The working hydraulic pump 70 is hydraulically connected to the horizontal control hydraulic cylinder 19 through a horizontal control electromagnetic hydraulic valve 253 that is controlled by operation of the horizontal control switch 254. The operator operates the horizontal control switch 254 to activate the horizontal control hydraulic cylinder 19, thereby maintaining the horizontal inclination of the reaping device 3 at a horizontal or arbitrary inclination. As shown in FIG. 7, a horizontal control switch 254 is provided at the upper end of the cutting posture lever 45.

  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 an operation of tilting the grain discharge lever 47 in the front-rear direction, the auger lifting / lowering hydraulic cylinder 252 is actuated, and the operator moves the cocoon throwing port 8a of the grain discharging conveyor 8 up and down to an arbitrary height. In addition, by operating the horizontal movement switch 37 and rotating the electric motor (not shown) in the forward and reverse directions, the grain discharge conveyor 8 is pivoted in the horizontal direction, and the culling spout 8a is moved in the horizontal direction. That is, it is configured such that the spear spout 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. 8, 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 traveling speed change levers 43 and 44 are connected to the output adjustment swash plate 65a of the left and right traveling hydraulic pump 65 via the servo valve mechanism 262, respectively, so that the left and right traveling speed change levers 43 and 44 are inclined in the front-rear direction. The support angle of the output adjustment swash plate 65a is changed proportionally. 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 configured to be driven forward or backward.

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

  In other words, the inclination angle of the left and right speed change levers 43, 44 at a vehicle speed proportional to the inclination angle of the left and right travel speed change levers 43, 44 by making the operation amount or direction of the left and right travel speed change levers 43, 44 different. The traveling machine body 1 can be turned in the left-right direction with a turning radius proportional to the difference between the two. 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. A brake mechanism 297 having a brake brake lever 296 is provided on the motor shaft 295 of the traveling hydraulic motor 69. The motor shaft 295 is configured to be braked by operating the brake braking lever 296.

  Next, the mounting structure of the brake pedal 38 and the travel shift levers 43 and 44 will be described with reference to FIGS. As shown in FIGS. 9 to 12, a pedal frame 275 is erected from the cab 5 and the base end portion of the brake pedal 38 is pivotally supported on the pedal frame 275 via a pedal fulcrum shaft 276. One end side of the brake wire 278 is connected to the base end portion of the brake pedal 38 via the wire arm 277. Further, a pedal return spring 280 is connected to the base end portion of the brake pedal 38 via a spring arm 279. The pedal return spring 280 is configured to support the stepping portion 38a of the brake pedal 38 at the raised position.

  As shown in FIGS. 9 to 11, the side column frame 281 forming the side column 41b includes an upper frame 281a that extends horizontally in the front-rear direction, a front column 281b that supports the front end of the upper frame 281a, It has an auxiliary column 281c erected in parallel with the front side of the column 281b, and an auxiliary upper frame 281d that connects the upper end of the column 281c to the front column 281b. The brake pedal 38 comes into contact with the lower surface of the auxiliary upper frame 281d, and the brake pedal 38 is supported at the raised position by the pedal return spring 280. Further, the parking lever 283 is rotatably supported by the auxiliary column 281c and the auxiliary upper frame 281d via the upper and lower brackets 282. When the brake pedal 38 is moved down by a stepping operation against the pedal return spring 280, the pedal hook body 283a of the parking lever 283 is locked to the brake pedal 38, and the brake pedal is resisted against the pedal return spring 280. 38 is configured to be supported in a downward movement (braking) position. A release spring 284 that supports the parking lever 283 is provided at a position where the pedal hook body 283a is not locked to the brake pedal 38.

  On the other hand, as shown in FIG. 12, a brake link 286 that connects the upper end side to the brake wire 278 via a brake spring 285 is provided. An intermediate portion of the brake link 286 is pivotally supported on the traveling machine body 1 via a link support shaft 287. A lower end side of the brake link 286 is connected to a brake braking lever 296 provided in the left traveling hydraulic motor 69 via a pin shaft body 288 and a long hole 289. Also, a brake brake lever 296 provided on the right traveling hydraulic motor 69 is connected to the pin shaft body 288 via a bolt shaft body 290 and a connection shaft body 291 whose connection length can be adjusted.

  Furthermore, as shown in FIG. 12, a lever return stopper body 292 that supports the brake brake lever 296 at the brake release position, and a brake release spring 293 that supports the brake brake lever 296 in contact with the lever return stopper body 292 are provided. A lever return stopper body 292 is provided on the left traveling hydraulic motor 69, and a brake release spring 293 is connected between the brake braking lever 296 provided on the left traveling hydraulic motor 69 and the lever return stopper body 292. When the brake pedal 38 is stepped on, the brake mechanism 297 provided in the left and right traveling hydraulic motors 69 operates in a braking state. On the other hand, the brake state of the brake mechanism 297 is released by the brake release spring 293 in a state where the stepping portion 38a of the brake pedal 38 is supported at the raised position.

  As shown in FIGS. 9 to 11, a shift lever fulcrum shaft 411 that pivotally supports the left and right travel shift levers 43 and 44 so as to be pivotable in the front-rear direction on the upper frame 281a of the side column frame 281 forming the side column 41b. Is provided. The shift lever fulcrum shaft 411 is passed through the upper frame 281a, and the middle portion of the shift lever fulcrum shaft 411 is fixed to the upper frame 281a. The base end portions of the left and right traveling shift levers 43 and 44 and the middle portions of the left and right lever operation plates 412 and 413 are rotated to the left and right ends of the shift lever fulcrum shaft 411 protruding in the left-right direction from the upper frame 281a. Support it as possible. The left shift lever 43 and the left lever operation plate 412 are fixed together. The right travel shift lever 44 and the right lever operation plate 413 are integrally fixed. The left shift lever 43 (left lever operation plate 412) and the right shift lever 44 (right lever operation plate 413) are supported by the shift lever fulcrum shaft 411 so as to rotate independently. Yes.

  Further, by providing an interlocking detent ball mechanism 414 that releasably connects the left and right lever operation plates 412 and 413, the upper end sides of the left and right lever operation plates 412 and 413 are engaged by the interlocking detent ball mechanism 414, When either one of the left and right traveling speed change levers 43 and 44 is operated, the other is operated in conjunction with an operation load equal to or less than the engaging force of the interlocking detent ball mechanism 414. Note that, when the operation load is equal to or greater than the engaging force of the interlocking detent ball mechanism 414, only one traveling speed change lever 43 or 44 on the operated side is operated.

  Furthermore, one end sides of the left and right shift push-pull wires 415 and 416 are coupled to the lower end sides of the left and right lever operation plates 412 and 413 via the left and right wire coupling shafts 419a and 419b, respectively. The other end sides of the left and right shift push-pull wires 415 and 416 are connected to a servo valve mechanism 262 for switching the output adjusting swash plate 65a. Either one or both of the left and right traveling hydraulic pumps 65 are controlled to rotate forward by tilting the front of either one or both of the left and right traveling shift levers 43 and 44, and either one or both of the left and right crawler belts 2 are controlled. Is driven forward. On the other hand, one or both of the left and right traveling hydraulic pumps 65 are reversely controlled by a tilting operation to the rear side of either one or both of the left and right traveling shift levers 43, 44, and either one of the left and right crawler belts 2 or Both are driven backwards. In addition, the course of the traveling machine body 1 is changed by changing the amount of tilting operation of the left and right traveling speed change levers 43 and 44, and turning (U-turn) or the like on the field headland is executed.

  Left and right neutral detent ball mechanisms 417 and 418 are detachably connected to the engagement notches 412a and 413b of the left and right lever operation plates 412 and 413, respectively. Left and right neutral detent ball mechanisms 417 and 418 are provided on both sides of the upper frame 281a. When either one or both of the left and right neutral detent ball mechanisms 417 and 418 are engaged with one or both of the left and right lever operation plates 412 and 413, either one of the left and right traveling speed change levers 43 and 44 or Both are configured to be supported in a neutral position (a position where the rotation of the left and right traveling hydraulic pumps 65 is zero).

  As shown in FIGS. 9 and 10, a switch base 421 provided on the front column 281b, a reverse switch 422 provided on the switch base 421, and a reverse sensor arm 423 for operating the switch arm 422a of the reverse switch 422 are provided. A reverse sensor arm 423 is provided on the switch base 421. Further, reverse operation arms 424 are provided on the left and right lever operation plates 412 and 413, respectively. When either one or both of the left and right speed change levers 43 and 44 are operated in reverse, the reverse operation arm 424 is brought into contact with the reverse sensor arm 423 and the reverse switch 422 is operated to notify the reverse operation. ing.

  As shown in FIG. 9 to FIG. 11, a pair of clamping plate bodies 427 that clamp the left and right wire connecting shaft bodies 419a and 419b at the same time are provided. One end side of a pair of sandwiching plate bodies 427 is rotatably connected to the upper frame 281a via a pivoting plate body 428. One end side of the pair of tension links 429 is connected to the other end side of the pair of sandwiching plate bodies 427, respectively. One end of a tension rod 430 whose length is adjustable is connected to the other end of the pair of tension links 429. The pedal arm portion of the brake pedal 38 is connected to the other end side of the tension rod 430.

  With the above configuration, when one or both of the left and right traveling speed change levers 43 and 44 are operated to the forward side or the reverse side, by stepping on the brake pedal 38, the pair of tension links 429 and the tension link 429 are pulled. The other end side of the pair of sandwiching plate bodies 427 is pulled downward via the rod 430, and the pair of sandwiching plate bodies 427 is pressed against one or both of the left and right wire connecting shaft bodies 419a and 419b, and the pair of sandwiching plates The left and right wire connecting shaft bodies 419a and 419b are sandwiched by the plate body 427. That is, the traveling speed change levers 43 and 44 are returned from the forward or reverse operation position to the neutral position where the left and right traveling hydraulic pumps 65 rotate to zero. By stepping on the brake pedal 38 (braking operation of the crawler belt 2), both the left and right traveling speed change levers 43 and 44 are supported at the neutral position (position where the vehicle speed becomes zero).

  On the other hand, when the brake pedal 38 is locked to the pedal hook body 283a of the parking lever 283 and the brake pedal 38 is supported at the stepping operation position (position indicated by the phantom line in FIG. 9), the pair of sandwiching plate bodies 427 The left and right wire connecting shaft bodies 419a and 419b are sandwiched. That is, when the crawler belt 2 is braked by the brake operation of the brake pedal 38, both the left and right traveling speed change levers 43, 44 are locked at the neutral position, and the left and right traveling speed change levers 43, 44 are moved forward or backward. Shifting operation that tilts to the side is prohibited.

  As shown in FIGS. 1 and 9 to 11, the reaping device 3, the threshing device 9 having a handling cylinder 21, and the traveling machine body 1 having a driver seat 42 are provided, and cereals are supplied from the reaping device 3 to the threshing device 9. The harvesting posture lever 45 is provided as a harvesting operation lever in the steering column 41 in front of the driver seat 42 and the left and right traveling speed change levers 43 and 44 are provided in the steering column 41 on the side of the driver seat 42. The left and right traveling units 2 can be controlled by operating the shift levers 43 and 44, respectively. Therefore, the operator sitting on the driver's seat 42 can switch the left and right traveling shift levers 43 and 44 by left hand operation, and the cutting posture lever 45 can be switched by the right hand operation of the operator, thereby improving the maneuverability. . For example, in a structure in which the take-up reel 14 is provided, the operator can operate the cutting posture lever 45 with the right hand to raise and lower the take-up device 3 while raising and lowering the mowing device 3, while the operator moves the left and right with the left hand. The vehicle speed (movement speed) can be changed by a speed change operation while operating the traveling speed change levers 43 and 44 and changing the course by a left and right turning operation. The cutting posture operation of the cutting device 3 provided with the take-in reel 14 or the like can be simplified. It is possible to improve the cutting workability in a field that requires a vehicle speed (moving speed) change operation or a course change operation, such as a field where grain cereals are partially lying down.

  As shown in FIGS. 1, 4, 8, and 9 to 12, a reaping device 3, a threshing device 9 having a handling cylinder 21, and a traveling machine body 1 having a crawler belt 2 as a left and right traveling unit are provided. The combine that supplies the cereal meal from the device 3 to the threshing device 9 has a structure in which a reduction gear case 63 as a left and right reduction case for independently driving the left and right crawler belts 2 is provided. Since the brake mechanisms 297 are respectively arranged and the left and right brake mechanisms 297 are connected to the brake pedal 38 as a single brake operating tool of the cab 5 as the driving operation unit, the left and right brake mechanisms 297 are operated by operating the brake pedal 38. The brake mechanism 297 can be operated simultaneously, and the left and right crawler belts 2 can be braked simultaneously. The traveling machine body 1 can be stopped without changing the moving direction (the course) of the traveling machine body 1. Further, for example, even if the brake pedal 38 and the left and right brake mechanisms 297 are installed separately from the front and rear parts of the traveling machine body 1, the braking operation structure of the left and right crawler belts 2 can be reduced in cost. It can be configured simply.

  As shown in FIGS. 5, 6, and 12, the left and right traveling hydraulic motors 69 provided in the left and right reduction gear cases 63 are arranged with their installation positions shifted in the front-rear direction of the traveling machine body 1. A brake link 286 as a brake lever is provided in the traveling machine body 1 located in the middle, and a brake pedal as a brake operation tool is provided via a brake link 286 to the left and right brake mechanisms 297 provided on the left and right traveling hydraulic motor 69 axes. 38, the left and right traveling hydraulic motors 69 can be disposed close to each other in the left-right width direction of the traveling machine body 1, and a traveling unit braking operation structure for coupling the brake pedal 38 to the left and right brake mechanisms 297 is provided. It can be configured at low cost and simply. For example, the brake pedal 38 at the front part of the traveling machine body 1 and the left and right brake mechanisms 297 at the rear part of the traveling machine body 1 can be easily connected by a single brake wire 278 that brakes the left and right brake mechanisms 297. The braking force of the brake mechanism 297 can be easily adjusted, and the maintenance workability thereof can be improved.

  As shown in FIGS. 9 to 11, the left and right traveling speed change levers 43 and 44 are provided on the cab 5, and the left and right traveling speed change levers 43 and 44 are operated by stepping on the brake pedal 38 as a brake operation tool. Thus, the left and right crawler belts 2 can be braked by setting the travel shift to neutral (running drive output is zero) only by the braking operation of the brake pedal 38. It is possible to prevent the traveling hydraulic pump 65 or the traveling hydraulic motor 69 from being overloaded by eliminating the difference between the timing for returning the left and right traveling shift levers 43 and 44 to the neutral position and the timing for braking the left and right crawler belts 2. Further, it is possible to simplify the hydraulic structure for driving the crawler belt 2 incorporating the traveling hydraulic pump 65 or the traveling hydraulic motor 69, or the operation for stopping the left and right crawler belts 2 and the like. That is, while the manufacturing cost of the hydraulic structure for driving the crawler belt 2 can be easily reduced, handling operability such as maintenance of the hydraulic structure for driving the crawler belt 2 can be improved. Further, an emergency stop can be performed by omitting the neutral return operation of the left and right traveling speed change levers 43 and 44, and the slip of the crawler belt 2 or the excavation of a farm scene can be reduced.

  Next, referring to FIGS. 7, 8, 13, 14, and 18, a mounting structure of the cutting posture lever 45 and the grain discharge lever 47 will be described. As shown in FIGS. 13, 14, and 18, a lever fulcrum chassis 441 is fixed to the inner surface of the front column 41 a that is erected from the cab 5. The lever fulcrum frame 442 is bolted to the lever fulcrum chassis 441. A left / right rotation fulcrum shaft 443 is fixed to the lever fulcrum frame 442. A left-right rotation frame 444 is provided that is supported to be rotatable about a left-right rotation fulcrum shaft 443 extending in the front-rear direction of the machine body. The left and right rotation boss 444a and the front and rear rotation boss 444b are integrally fixed to the left and right rotation frame 444.

  Further, the left / right rotation boss 444a is pivotally supported on the left / right rotation fulcrum shaft 443. A front / rear rotation fulcrum shaft 445 is pivotally supported on the front / rear rotation boss 444b. A base end portion of the cutting posture lever 45 and an upper end portion of the front / rear rotation frame 446 are integrally fixed to a front / rear rotation fulcrum shaft 445 extending in the left-right direction of the machine body. A lower end portion of a front / rear rotation frame 446 extending to a position directly below the left / right rotation fulcrum shaft 443, and a bar frame-shaped spring receiver 447 extending from the lever fulcrum frame 442 to a position directly below the left / right rotation fulcrum shaft 443. In the meantime, a lever return spring 448 for returning the cutting posture lever 45 to the upright posture is connected.

  On the other hand, as shown in FIGS. 13, 14, and 18, a fulcrum side frame 453 that fixes one end side to the lever fulcrum frame 442 is provided. The lever fulcrum boss portion 453a is integrally fixed to the fulcrum side frame 453. The base end portion 47a of the grain discharge lever 47 is passed through the fulcrum side frame 453 and the lever fulcrum boss portion 453a, and the grain discharge lever 47 is pivotally supported by the lever fulcrum boss portion 453a so as to be rotatable in the front-rear direction. An intermediate portion of an L-shaped cutting lift link 454 is rotatably supported on the base end portion 47 a of the grain discharge lever 47.

  Further, a vertically long locking groove 446 a is formed on the lower end side of the front / rear rotation frame 446. An engagement shaft body 455 is provided on one end side of the L shape of the cutting lift link 454, and the engagement shaft body 455 is slidably engaged in the locking groove 446a. The upper end side of the plate-shaped cutting rod lifting / lowering cooperative rod body 456 is connected to the L-shaped other end side of the cutting lifting link 454. The lower end side of the cutting / lifting cooperation rod body 456 is connected to the cutting lifting / lowering spool 255a of the manual lifting / lowering hydraulic valve 255. That is, by turning the cutting posture lever 45 around the pivot shaft 445 and tilting the cutting posture lever 45 in the longitudinal direction of the machine body, the cutting lifting link 454 is moved around the base end portion 47a of the grain discharge lever 47. Rotating and moving the cutting rod lifting / lowering cooperation rod body 456 up and down to operate the cutting and lifting spool 255a, switching the cutting and lifting manual hydraulic valve 255, operating the lifting and lowering hydraulic cylinder 4, and lifting and lowering the cutting device 3 It is configured to move.

  In addition, the upper end side of a flat plate-shaped reel ascending / descending cooperation rod body 458 is connected to the left / right rotation frame 444 via a pivot shaft 457. The lower end side of the reel lifting / lowering cooperative rod body 458 is connected to the reel lifting / lowering spool 256a of the reel lifting / lowering manual hydraulic valve 256. That is, by turning the cutting posture lever 45 about the left and right rotation fulcrum shaft 443 and tilting the cutting posture lever 45 in the left and right direction of the machine body, the left and right rotation frame 444 rotates about the left and right rotation fulcrum shaft 443. The reel lifting / lowering cooperative rod body 458 is moved up and down to operate the reel lifting / lowering spool 256a, the reel lifting / lowering manual hydraulic valve 256 is switched, the reel lifting / lowering hydraulic cylinder 251 is operated, and the take-up reel 14 is moved up and down. It is configured to make it.

  On the other hand, the grain discharge link 459 is fixed to the base end portion 47 a of the grain discharge lever 47. The upper end side of the plate-shaped conveyor lifting / lowering cooperation rod body 460 is connected to the grain discharge link 459. The lower end side of the conveyor lifting / lowering cooperative rod body 460 is connected to the auger lifting / lowering spool 257a of the auger lifting / lowering manual hydraulic valve 257. That is, by rotating the grain discharge lever 47 around the axis of the base end 47a and tilting the grain discharge lever 47 in the longitudinal direction of the machine body, the grain discharge link 459 rotates, and the conveyor lifting and lowering cooperation The rod body 460 is moved up and down to operate the auger lifting / lowering spool 257a, to switch the auger lifting / lowering manual hydraulic valve 257, to operate the auger lifting / lowering hydraulic cylinder 252 and to It is configured to move up and down.

  The manual lifting / lowering manual hydraulic valve 255, the reel lifting / lowering manual hydraulic valve 256, and the auger lifting / lowering manual hydraulic valve 257 are formed in a harvesting hydraulic valve unit body 258 structure with a single hydraulic valve block, It is attached to the upper surface of the valve support 461 provided on the step floor 5 b of the cab 5. The valve support 461 is disposed at the bottom in the front column 41a. The accelerator lever 46 is connected to an engine rotation control mechanism attached to the engine 7 via an accelerator wire 462.

  As shown in FIGS. 1, 7, and 9 to 11, a reaping device 3, a threshing device 9 having a handling cylinder 21, and a traveling machine body 1 having a crawler belt 2 as left and right traveling units are provided. In the combine that supplies the threshing device 9 to the threshing device 9, the left and right traveling speed change levers 43 and 44 are provided on the side column 41b in the vicinity of the driver seat 42, and the side column frame that forms part of the side column 41b is used. Left and right traveling speed change levers 43 and 44 and neutral detent ball mechanisms 417 and 418 as neutral maintaining mechanisms for supporting the left and right traveling speed change levers 43 and 44 at the traveling speed neutral position are disposed on the upper frame 281a. Therefore, the left and right traveling speed change levers 43 and 44 are arranged close to each other, and the operator can easily operate the levers 43 and 44 with one hand. The left and right traveling speed change levers 43 and 44 are supported at the zero travel speed position by the neutral detent ball mechanisms 417 and 418, so that the operator clearly recognizes the forward and backward operation of the left and right traveling speed change levers 43 and 44. While the vehicle speed can be changed by appropriately shifting the left and right traveling speed change levers 43, 44, the operator operates one or both of the left and right traveling speed change levers 43, 44 with one hand. Further, the steering operation for changing the course (movement direction) of the traveling machine body 1 can be easily performed. It is possible to improve the maneuverability in the harvesting work performed continuously for a long time.

  As shown in FIGS. 7 and 9 to 11, left and right neutral detent ball mechanisms 417 and 418 that respectively support the left and right traveling speed change levers 43 and 44 independently of the traveling speed neutral position are provided. The left and right traveling speed change levers 43 and 44 and the left and right neutral detent ball mechanisms 417 and 418 are disposed on both sides of the upper frame 281a with the upper frame 281a extending toward the left side. Therefore, the left and right neutral detent ball mechanisms 417 and 418 can be installed with high precision so as to face the left and right travel shift levers. 44 can be prevented from being supported at an inappropriate position. For example, in a structure in which left and right traveling hydraulic pumps 65 for driving the left and right crawler belts 2 are provided and the outputs of the left and right traveling hydraulic pumps 65 are switched by the left and right traveling shift levers 43 and 44, respectively, Is supported at the neutral position for traveling, the outputs of the left and right traveling hydraulic pumps 65 are maintained at zero, and either one or both of the left and right crawler belts 2 can be prevented from being driven. Further, the left and right traveling speed change levers 43 and 44 and the left and right neutral detent ball mechanisms 417 and 418 can be installed at low cost and in a compact manner by utilizing the highly rigid upper frame 281a.

  As shown in FIGS. 9 to 11, an interlocking detent ball mechanism 414 is provided as interlocking means for detachably connecting the left and right traveling speed change levers 43, 44. The shift levers 43 and 44 are integrally engaged to perform switching operation, and the interlocking detent ball mechanism 414 is detached with a certain operating force or more so that the left and right travel shift levers 43 and 44 can be operated independently. Yes. Accordingly, a shifting operation (an operation for changing the vehicle speed while moving straight) and an operation of either the left or right traveling speed change lever 43, 44 are performed by operating one of the left and right traveling speed change levers 43, 44. Gear shifting operation (steering operation for changing the course while changing the vehicle speed) can be easily executed by one or both of the left and right traveling shift levers 43 and 44 being operated by one operator. . For example, when the left and right traveling speed change levers 43 and 44 can be operated with a certain operating force or less, that is, in a situation where the traveling load is small, the other lever 43, 44 is operated by operating one of the left and right traveling speed change levers 43, 44. 44 can also be switched in conjunction with each other to improve straightness in high-speed movement. On the other hand, when the left and right traveling speed change levers 43, 44 are operated with a certain operating force or more, that is, under a heavy traveling load, either of the left and right crawler belts 2 is controlled by independent operation of the left and right traveling speed change levers 43, 44. The left and right crawler belts 2 can be controlled to cope with either or both sideslip or slip, the reaping device 3 can be moved along an uncut grain culm row, etc. Remaining can be reduced. It is possible to improve harvesting workability such as wet fields that easily slip or slip.

  As shown in FIGS. 8 to 12, the brake mechanism 297 for braking the crawler belt 2 and a brake pedal 38 as a brake operating tool for braking the brake mechanism 297 are provided. The left and right traveling speed change levers 43 and 44 are configured to return to the support positions of the neutral maintaining mechanisms 417 and 418. Therefore, the left and right crawler belts 2 can be braked by setting the travel shift to neutral (travel drive output is zero) only by the braking operation of the brake pedal 38. For example, in the structure in which the left and right crawler belts 2 are driven by the traveling hydraulic pump 65 or the traveling hydraulic motor 69, the timing of returning the left and right traveling shift levers 43 and 44 to the neutral position and the timing of braking the left and right crawler belts 2 The traveling hydraulic pump 65 or the traveling hydraulic motor 69 can be prevented from being overloaded, and the crawler 2 driving hydraulic structure incorporating the traveling hydraulic pump 65 or the traveling hydraulic motor 69 or the operation of stopping the left and right crawlers 2 can be simplified. Can be That is, while the manufacturing cost of the hydraulic structure for driving the crawler belt 2 can be easily reduced, handling operability such as maintenance of the hydraulic structure for driving the crawler belt 2 can be improved. Further, an emergency stop can be performed by omitting the neutral return operation of the left and right traveling speed change levers 43 and 44, and the slip of the crawler belt 2 or the excavation of a farm scene can be reduced.

  As shown in FIGS. 3, 7, and 14, the structure includes a grain tank 6 that collects grains of the threshing device 9 and a grain discharge conveyor 8 that discharges the grains in the grain tank 6 to the outside of the machine. As the harvesting operation lever, a harvesting posture lever 45 that moves up and down the harvesting device and a grain discharge lever 47 that moves up and down the grain discharge conveyor 8 are provided, and a single unit installed in the steering column 41 in front of the driver seat 42. A base portion of the cutting posture lever 4 and a base portion of the grain discharge lever 47 are supported by a lever fulcrum frame 442 as one lever support. Therefore, the support structure of the cutting posture lever 45 and the grain discharge lever 47 can be easily configured by the lever fulcrum frame 442. With the lever fulcrum frame 442 supporting the cutting posture lever 45 and the grain discharge lever 47, the cutting posture lever 45 and the grain discharge lever 47 can be assembled in the steering column 41. The attaching / detaching workability of the cutting posture lever 45 and the grain discharging lever 47 can be improved.

  As shown in FIGS. 13 and 14, a harvesting hydraulic valve unit body 258 is installed in the steering column 41 in front of the driver's seat 42, and a cutting lift manual hydraulic valve 255 that is switched by operating a cutting posture lever 45, and a cutting posture lever. A manual hydraulic valve 256 for raising and lowering the reel that is switched by 45 operation and a manual hydraulic valve for raising and lowering the auger (manual hydraulic valve for discharge conveyor) 257 that is switched by operating the grain discharge lever 47 are provided in the hydraulic valve unit body 258 for harvesting work. Yes. Therefore, the hydraulic valves 255, 256, 257 for harvesting work can be concentrated in the steering column 41. The mowing posture lifting lever 45 and the grain discharge lever 47 can be easily connected to the mowing lifting manual hydraulic valve 255, the reel lifting manual hydraulic valve 256, and the auger lifting manual hydraulic valve 257. Assembling or disassembling of the manual lifting / lowering manual hydraulic valve 255, the lifting / lowering manual hydraulic valve 256, the auger lifting / lowering manual hydraulic valve 257, etc. can be simplified. Maintenance workability of the auger lifting manual hydraulic valve 257 and the like can be improved.

  Next, with reference to FIGS. 4, 7, and 15 to 17, an attachment structure of the reaping clutch lever 39 and the threshing clutch lever 40 and an on / off operation structure of the threshing clutch 233 will be described. As shown in FIGS. 15 to 16, using the rear vertical frame 511 and the rear horizontal frame 512 of the cab 5, the cutting clutch lever 39 is provided on the left upper surface (the rear end side of the side column 41 b) of the rear of the cab 5. And a threshing clutch lever 40 is attached. Lever fulcrum plate 513 erected on the upper surface of the rear horizontal frame 512, lever fulcrum shaft 514 provided on the base end side (lower end side) of the lever fulcrum plate 513, and lever rising stopper provided on the upper end side of the lever fulcrum plate 513 515 and a lever fall stopper 516 that is fixed to the front side of the rear lateral frame 512.

  Then, the base end portion of the reaping clutch lever 39 and the base end portion of the threshing clutch lever 40, and the base end portion of the reaping lever link 517 and the threshing lever link 518 are pivotally supported on the lever fulcrum shaft 514. A cutting lever link 517 is integrally fixed to the base end portion of the cutting clutch lever 39. A threshing lever link 518 is integrally fixed to the base end portion of the threshing clutch lever 40. Further, a cutting clutch wire 520 is connected to the cutting lever link 517 through a cutting clutch fulcrum crossing link 519.

  That is, the cutting clutch lever 39 that is in contact with the lever standing stopper 515 and supported in the standing posture is rotated around the lever fulcrum shaft 514, and the cutting clutch lever 39 is tilted forward of the machine body, The cutting clutch lever 39 is moved to the lying posture to be brought into contact, the cutting clutch wire 520 is pulled through the cutting clutch fulcrum crossing link 519, the cutting clutch 242 is engaged, the cutting driving belt 241 is tensioned, and the cutting device 3 Is configured to operate. In addition, by returning the harvesting clutch lever 39 in the lying posture to the standing posture, the harvesting clutch 242 is turned off and the harvesting device 3 is stopped.

  On the other hand, as shown in FIGS. 15 to 16, a regulation plate 523 that is fixed to the threshing clutch lever 40 is provided. The restriction plate body 523 is extended on the front side of the cutting clutch lever 39 supported in the standing posture, and the restriction plate body 523 is brought into contact with the front surface of the cutting clutch lever 39 in the standing posture. In a state where the threshing clutch lever 40 is brought into contact with the lever standing stopper 515 and is supported in the standing posture, the cutting plate lever 393 is maintained in the standing posture by the restriction plate 523. That is, it is configured such that the forward tilting operation of the cutting clutch lever 39 is blocked by the restriction plate 523. When the threshing clutch lever 40 is supported in the lying posture in contact with the lever lying stopper 516, the cutting clutch lever 39 can be tilted forward.

  Further, as shown in FIGS. 15 to 16, a link support frame 526 that is fixed to a connecting portion between the rear end portion of the upper frame 281 a and the rear vertical frame 511 is provided. A conversion link mechanism 525 is connected to the threshing lever link 518 via a threshing clutch fulcrum crossing link 524. The conversion link mechanism 525 includes a first conversion link 527, a second conversion link 528, and a third conversion link 529. The base end of the first conversion link 527 and the base end of the second conversion link 528 are pivotally supported on a link support shaft 530 provided on the link support frame 526. The base end portion of the first conversion link 527 and the base end portion of the second conversion link 528 are integrally fixed. The tip side of the 1st conversion link 527 is connected with the threshing clutch fulcrum crossing link 524 so that bending is possible.

  On the other hand, the one end side of the 3rd conversion link 529 is connected with the front end side of the 2nd conversion link 528 so that bending is possible. Further, the front end side of the threshing clutch rod body 531 is connected to the other end side of the third conversion link 529 via the shaft body 529a. A slide body 532 is fixed to the other end side of the third conversion link 529. The slide body 532 is slidably brought into contact with the slide rail surface 526a formed on the link support frame 526. A spring receiver 533 is fixed to the upper surface of the rear horizontal frame 512, and a lever standing spring 534 is connected between the threshing lever link 518 and the spring receiver 533.

  That is, the threshing clutch lever 40 is brought into contact with the lever standing stopper 515 together with the cutting clutch lever 39 by the pulling force of the lever standing spring 534 and is supported in the standing posture. The threshing clutch lever 40 in an upright position abutted against the lever standing stopper 515 is rotated around the lever fulcrum shaft 514 so that the threshing clutch lever 40 is tilted forward of the machine body and brought into contact with the lever falling stopper 516. By moving the threshing clutch lever 40, the first conversion link 527 and the second conversion link 528 of the conversion link mechanism 525 are rotated via the threshing clutch fulcrum crossing link 524, and slide through the third conversion link 529. The body 532 is slid forward on the slide rail surface 526a to pull the threshing clutch rod body 531.

  Further, as shown in FIGS. 1, 4, 5, 6, and 17, the traveling drive input shaft is parallel to the output shaft 67 of the engine 7 mounted on the traveling machine body 1 below the rear of the Glen tank 6 and at the same height position. 64 is provided. An engine output pulley 483 on the output shaft 67 and an engine output transmission pulley 480 on the travel drive input shaft 64 are connected by an engine output belt 231. The pump case 66 provided with the traveling drive input shaft 64 is fixed to the upper surface side of the traveling machine body 1 through the front support body 271 and the rear support body 272. Left and right traveling hydraulic pumps 65 are built in the pump case 66. Further, a threshing output transmission pulley 481 and a grain discharge drive pulley 482 are provided on the travel drive input shaft 64.

  As shown in FIGS. 4 and 17, an engine room frame 541 is erected on the upper surface of the rear support 272. A handling cylinder drive case 71 is provided in the engine room frame 541. A threshing input shaft 72 is pivotally supported on the barrel driving case 71. A threshing input pulley 484 on the large diameter side is pivotally supported on one end side of the threshing input shaft 72, and a threshing drive belt 232 is suspended between the threshing output transmission pulley 481 and the threshing input pulley 484 on the large diameter side. A threshing input pulley 485 on the small diameter side is pivotally supported on the other end side of the threshing input shaft 72, and a handling cylinder driving belt 234 is disposed between the handling cylinder input pulley 486 on the handling cylinder shaft 20 and the threshing input pulley 485 on the small diameter side. Suspend. Further, a grain discharge pulley 487 is pivotally supported on the rear end side of the bottom feed conveyor shaft 103, and a grain discharge belt 244 is suspended between the grain discharge drive pulley 482 and the grain discharge pulley 487.

  As shown in FIG. 17, an arm fulcrum shaft 542 is pivotally supported on the rear support 272 so as to be rotatable. A tension arm 543 is provided on one end side of the arm fulcrum shaft 542 protruding rearward from the rear support 272. The tension roller 233 is rotatably supported on the tension arm 543. Further, a threshing operation arm 544 is provided on the other end side of the arm fulcrum shaft 542 protruding forward from the rear support 272. A fulcrum bracket body 545 is provided on the engine room frame 541, a threshing operation link body 546 is pivotally supported on the fulcrum bracket body 545, and a tension spring body that can be expanded and contracted on one operation link 546a of the threshing operation link body 546. Through 547, the threshing operation arm 544 is connected. The rear end side of the threshing clutch rod body 531 is connected to the other operation link 546b of the threshing operation link body 546.

  That is, when the threshing clutch lever 40 is tilted forward and the threshing clutch rod body 531 is pulled, the tension arm 543 is rotated via the threshing operation link body 546 and the threshing operation arm 544, and the threshing drive is performed. The tension roller 233 is pressure-bonded to the belt 232, and the threshing drive belt 232 is tensioned by the tension roller 233 so that the threshing clutch 9 is activated by entering the threshing clutch. In addition, by returning the threshing clutch lever 40 in the lying posture to the standing posture, the tension of the threshing driving belt 232 by the tension roller 233 is released, the threshing clutch is turned off, and the threshing device 9 is stopped.

  Further, as shown in FIGS. 4, 8, and 17, left and right traveling hydraulic motors 69 provided in reduction gear cases 63 as left and right deceleration cases, and left and right traveling hydraulic pumps 65 respectively driving left and right traveling hydraulic motors 69. And a pump case 66 as a counter case in which the left and right traveling hydraulic pumps 65 are provided. The left and right traveling hydraulic pumps 65 are arranged on one end side of the traveling drive input shaft 64 on the traveling drive input shaft 64 as a counter shaft provided in the pump case 66, while the traveling drive input shaft 64 extends in the axial direction. A part 272a of the rear support 272 for installing the pump case 66 is extended, and a bearing holder 268 is provided on the extended end 272a of the rear support 272. The flat surface of the bearing holder 268 is bolted to the flat surface of the extended end portion 272a of the rear support 272 so that the position of the bearing holder 268 can be adjusted in the vertical and horizontal directions. The bearing holder 268 is configured to rotatably support the other end side of the travel drive input shaft 64 on the bearing. A belt presser 269 of the threshing drive belt 232 is detachably fastened to the bearing holder 268. Therefore, the support strength of the travel drive input shaft 64 can be ensured by the rigidity of the rear support 272. When the threshing drive belt 232 is replaced, by removing the bearing holder 268, the belt presser 269 is also removed, so that the maintainability of the threshing drive belt 232 can be improved.

  As shown in FIGS. 7, 15, and 16, a threshing clutch lever 40 as a work clutch lever is provided on the steering column 41 on one side rear of the driver seat 42, and a tension roller 233 (threshing clutch installed at the rear of the traveling machine body 1 is provided. ) The threshing clutch lever 40 at the front of the traveling machine body 1 is connected to the mechanism, and the threshing clutch lever 40 is connected to the threshing clutch lever 40 by a threshing clutch rod body (connecting rod) 531. Therefore, the tension roller 233 mechanism can be a belt tension roller 233 that is inexpensive and easy to maintain. By pushing and pulling the threshing clutch rod body 531 of the threshing clutch lever 40, the high tension belt tension roller 233 necessary for high torque input of the threshing device 9 can be switched to the threshing clutch entering position or the cutting position appropriately. . A connection structure between the threshing clutch lever 40 at the front of the traveling machine body 1 and the tension roller 233 mechanism at the rear of the traveling machine body 1 can be configured at low cost. The manufacturing cost of the tension roller 233 mechanism and the operation structure can be reduced. Handling operability such as assembly / disassembly or maintenance of the tension roller 233 mechanism and operation structure can be improved.

  4, 8, and 17, left and right traveling hydraulic motors 69 provided in the left and right reduction gear cases 63, left and right traveling hydraulic pumps 65 that respectively drive the left and right traveling hydraulic motors 69, and left and right traveling hydraulic pressures. The structure includes a pump case 66 as a counter case provided with a pump 65, and left and right traveling hydraulic pumps 65 are disposed on one end side of the counter shaft on a traveling drive input shaft 64 as a counter shaft provided in the pump case 66. On the other hand, a part of the rear support 272 for installing the pump case 66 is extended in the axial direction of the travel drive input shaft 64, and a bearing holder 268 is provided on the extended end 272a of the rear support 272, Since the bearing holder 268 is configured to support the other end side of the travel drive input shaft 64, the travel drive input shaft 64 has high rigidity. It is possible to assemble the engine output transmission pulley 480 or the threshing output transmission pulley 481 as a power transmission pulley to the travel drive input shaft 64 at a low cost, and to easily adjust the position of the bearing holder 268, etc. Thus, the traveling drive input shaft 64 can be supported with high accuracy. By providing the belt holder 268 with the belt presser 269 and the like, the structure for attaching the belt presser 269 can be simplified, and maintenance workability such as replacement of the threshing drive belt 232 as a power transmission belt can be improved.

1 traveling body 2 crawler track (traveling section)
3 Harvesting device 6 Glen tank 8 Grain discharge conveyor 9 Threshing device 21 Handling cylinder 40 Threshing clutch lever (working clutch lever)
41 Steering column 42 Driver's seat 43 Left travel speed change lever 44 Right travel speed change lever 45 Harvesting posture lever (harvesting work lever)
47 Grain discharge lever (harvesting lever)
233 Tension roller (threshing clutch)
255 Manual hydraulic valve for lifting and lowering 257 Manual hydraulic valve for auger lifting and lowering 258 Hydraulic valve unit body for harvesting operation 442 Lever fulcrum frame (lever support)
531 Threshing Clutch Rod Body (Connecting Rod)

Claims (3)

In a combine that includes a reaping device, a threshing device having a handling cylinder, and a traveling machine body having a driver's seat, and supplying cereals from the reaping device to the threshing device,
A harvesting operation lever is provided in the steering column in front of the driver seat, left and right traveling speed change levers are provided in the steering column on the side of the driver seat, and left and right traveling parts can be controlled by operating the left and right traveling speed change levers, respectively. configured,
A grain tank that collects grains of the threshing device and a grain discharge conveyor that discharges the grains in the grain tank to the outside of the machine, and as the harvesting operation lever, the reaping device is moved up and down While providing a cutting posture lever and a grain discharge lever that moves up and down the grain discharge conveyor, a single lever support installed in the steering column in front of the driver seat, the base of the cutting posture lever, and The combine characterized by comprising so that the base of a grain discharge lever may be supported . A hydraulic valve unit body for harvesting work is installed in the steering column in front of the driver seat, and a hydraulic valve for cutting lifting and lowering that is switched by operating the harvesting posture lever, and a hydraulic valve for discharging conveyor that is switched by operating the grain discharging lever, The combine according to claim 1, wherein the combine is provided in the harvesting hydraulic valve unit body . A work clutch lever is provided in a steering column at one side rear of the driver seat, and the work clutch lever at the front part of the traveling machine body is connected to a threshing clutch mechanism installed at the rear part of the traveling machine body, Combine according to claim 1, characterized in that the threshing clutch mechanism in the clutch lever and connected by connecting rods.

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