WO2012077496A1

WO2012077496A1 - Combine

Info

Publication number: WO2012077496A1
Application number: PCT/JP2011/076949
Authority: WO
Inventors: 草地　寛太; 俊行島岡; 竜也水畑; 裕森川; 勇姚
Original assignee: ヤンマー株式会社
Priority date: 2010-12-07
Filing date: 2011-11-22
Publication date: 2012-06-14
Also published as: CN103260392B; CN103260392A; JP2012120468A

Abstract

The purpose of the present invention is to provide a combine in which the maintainability of the travel-motion hydraulic motors (69), etc. can be improved and in which the overall height and width of the machine body can be made small. A combine includes a reaping device (3), a threshing device (9) having a threshing drum (21), and a travel-motion machine body (1) having right and left crawler belts (2), and supplies stalks of grain from the reaping device (3) to the threshing device (9), wherein right and left travel-motion drive cases (63) are provided respectively on right and left track frames (50) on which the right and left crawler belts (2) are respectively mounted. Right and left drive sprockets (51) for the respective crawler belts (2) are rotatably supported by the respective output sections of the right and left travel-motion drive cases (63). Right and left travel-motion hydraulic motors (69) provided to the respective input sections of the right and left travel-motion drive cases (63) are supported on the respective medial sides of the right and left crawler belts (2) on the non-ground-touching side thereof and at the height position on the non-ground-touching side of the crawler belts.

Description

Combine

The present invention relates to a combine equipped with a reaping device for reaping uncut cereal grains in a field and a threshing device 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). Further, in a structure in which the left and right crawler belts installed on the traveling machine body are driven by the left and right hydraulic pumps and the left and right hydraulic motors, a technique of connecting the left and right hydraulic motors with brackets provided on the traveling machine body (see Patent Document 2), or the traveling machine body A technique (see Patent Documents 3 and 4) in which left and right hydraulic motors are arranged at symmetrical positions around the center line in the front-rear direction is also known.

JP 2008-263865 A JP 2005-82084 A JP-A-49-125442 JP-A 49-108470

In the prior art shown in Patent Document 1 or Patent Document 2, since the hydraulic motor and the speed reducer are provided on the inner peripheral side of the crawler belt, it is necessary to arrange the hydraulic motor and the speed reducer on the axis of the crawler belt drive sprocket. On the other hand, there is a problem that the drive sprocket and the speed reducer need to be connected to the traveling machine body via the hydraulic motor housing, and the manufacturing cost cannot be easily reduced. In the prior art disclosed in Patent Document 3 or Patent Document 4, left and right traveling hydraulic motors are provided in the input portions of the left and right traveling drive cases, respectively, so that the manufacturing costs of the traveling hydraulic motor and the speed reducer can be reduced. However, since the traveling hydraulic motor is supported at a position lower than the height of the non-grounded side of the left and right crawler belts, there is a problem that the threshing device or the glen tank provided on the upper surface side of the traveling machine body is supported at a high position. There is. That is, in a combine in which the left and right crawler belts are installed on the lower surface side of the traveling machine body, the height of the left and right crawler belts cannot be easily lowered. There are problems that cannot be easily prevented.

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

In order to achieve the above object, a combine of an invention according to claim 1 includes a reaping device, a threshing device having a handling cylinder, and a traveling machine body having left and right crawler belts, and the threshing device is fed from the reaping device to the threshing device. In the combine to be supplied, the left and right traveling drive cases are respectively installed on the left and right track frames where the left and right crawler belts are installed, and the left and right drive for the crawler belts are provided at the output portions of the left and right traveling drive cases. The left and right traveling hydraulic motors respectively provided at the input parts of the left and right traveling drive cases are supported at the height of the non-grounded side on the inner side of the non-grounded side of the left and right crawler tracks. It is configured.

According to a second aspect of the present invention, in the combine according to the first aspect, the driving sprocket is provided on an outer surface of the lower part of the traveling drive case, and the traveling hydraulic motor is provided on an inner surface of the upper part of the traveling drive case. The two sets of the left and right traveling drive cases and the traveling hydraulic motor are arranged in a portal shape when viewed from the front.

According to a third aspect of the present invention, in the combine according to the first aspect, the left and right traveling hydraulic motors are arranged in symmetrical positions in plan view about an axle centerline connecting the shaft centers of the left and right drive sprockets. It is a thing.

According to the invention described in claim 1, in a combine that includes a reaping device, a threshing device having a handling cylinder, and a traveling machine body having left and right crawler belts, and supplying cereals from the reaping device to the threshing device, The left and right traveling drive cases are respectively installed on the left and right track frames on which the left and right crawler belts are installed, and the left and right driving sprockets for the crawler tracks are pivotally supported on the output portions of the left and right traveling drive cases, respectively. The left and right traveling hydraulic motors respectively provided at the input portions of the left and right traveling drive cases are configured to be supported at the non-grounding side height position inside the non-grounding side of the left and right crawler belts. Thus, the traveling hydraulic motor can be supported outside the crawler belt, the traveling hydraulic motor attaching / detaching operation or the hydraulic piping operation can be simplified, and the manufacturing cost of the traveling hydraulic motor and the like can be easily reduced. It is possible to improve the maintenance workability of the traveling hydraulic motor, etc., and the overall height and width of the combine machine body can be configured compactly, such as the threshing device or the glen tank installed on the upper surface side of the traveling machine body The support height can be lowered, and the aircraft can be prevented from falling over easily. Moving workability such as going into and out of the field or getting over the shore can be improved.

For example, in a civil engineering machine in which a driver's seat, an engine, and a working unit are integrally pivotable, the non-grounded side of the crawler track can be configured higher, so that the traveling hydraulic motor can be supported at a position lower than the non-grounded side of the crawler track. In a combine in which a driver's seat, an engine, and a working unit (such as a threshing device) are installed using the entire upper surface side of the traveling machine body, it is necessary to install the crawler belt below the traveling machine body. When the traveling hydraulic motor is supported at a position lower than the grounding side, the traveling hydraulic motor is supported close to the field scene. The invention according to claim 1, wherein there is a problem that a large amount of mud in the field adheres to the traveling hydraulic motor or a large amount of cocoon grass wraps around the traveling hydraulic motor, and the traveling resistance of the crawler track tends to increase. Then, it is possible to prevent a large amount of mud in the field from adhering to the traveling hydraulic motor, or it is possible to prevent the grass from being wound around the traveling hydraulic motor in a large amount, and the traveling resistance of the crawler track can be reduced.

According to the second aspect of the present invention, the driving sprocket is provided on the outer surface of the lower part of the traveling drive case, the traveling hydraulic motor is provided on the inner surface of the upper part of the traveling drive case, and the two sets of the left and right traveling drives are provided. Since the case and the traveling hydraulic motor are arranged in a gate shape when viewed from the front, even when the crawler track sinks greatly in mud during harvesting work such as in a wet field, the two sets of traveling drive cases on the left and right sides Further, it is possible to prevent the mud in the field from being smoothly discharged from the space below the traveling hydraulic motor and increasing the traveling resistance of the crawler belt. It is possible to improve the running performance in the wet field by reducing the soil removal resistance of the crawler belt. The ground support height of the traveling hydraulic motor can be increased, and the hydraulic piping structure to the traveling hydraulic motor can be simplified.

According to the third aspect of the present invention, the left and right traveling hydraulic motors are arranged at symmetrical positions in plan view around the axle centerline connecting the shaft centers of the left and right drive sprockets. Two sets of the traveling hydraulic motor and the traveling drive case are formed in the same structure, and can be shared as a drive source for the left and right crawler belts. Further, even if the lateral width dimension of the traveling hydraulic motor or the traveling drive case is such that the traveling hydraulic motor protrudes to the opposite side of the center of the machine body, the lateral installation distance of the left and right crawler tracks is limited. Rather, the two sets of left and right traveling hydraulic motors and the traveling drive case can be easily assembled between the left and right crawler belts. For example, the left and right traveling hydraulic motors can be spaced apart from each other even when the distance between the left and right crawler belts (wheel distance) is smaller than the left and right width dimensions of the left and right traveling drive cases and the traveling hydraulic motor. Possible that the mud is deposited between the left and right traveling hydraulic motors. Further, it is possible to prevent the grass from being wound between the left and right traveling hydraulic motors. Maintenance workability of the traveling hydraulic motor can be improved.

It is a left view of the ordinary 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 a left view of the drive part of a threshing apparatus. The driving portion of the threshing apparatus is a perspective view from the rear. The driving portion of the threshing apparatus is a perspective view from the front. It is a hydraulic circuit diagram of a combine. It is a rear view of the drive part of a combine. It is a side view of the traveling drive part of a combine. It is the perspective view which looked at the traveling drive part from the front. It is the perspective view which looked at the traveling drive part from back. It is a top view of the traveling drive part. It is an enlarged plan view of the traveling drive unit. It is sectional drawing of a reduction gear case.

Hereinafter, an embodiment of the present invention will be described 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 crawler tracks 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 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 the handling port 9a in the front part of the threshing device 9 and a horizontally long bucket-shaped grain header 12 that is provided continuously 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 FIG. 1 thru | or FIG. 3, the handling cylinder 21 is rotatably provided in the handling chamber of the threshing apparatus 9. 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.

In addition, a plurality of dust feeding valves (not shown) for adjusting the conveying speed of threshing 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 Kara 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 of the grains (fine grains, etc.) by the specific gravity sorting action of the swing sorter 26 and the wind sorting of the Kara fan 29, It is configured so as to be sorted into second crops such as grain with branch stems and sawdust.

The first conveyor mechanism 30 and the 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 work clutch lever (not shown) for turning on and off the power transmission of the reaping device 3 or the threshing device 9 is 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, It is provided an intermediate roller 54 to hold the non-grounded side of the track 2. 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 23, the ground side of the crawler belt 2 is supported by the track roller 53, and the non-ground side of the crawler belt 2 is supported by the intermediate roller 54 To be configured.

Also, as shown in FIGS. 1 to 3, a bottom feed conveyor 60 disposed at the bottom of the Glen tank 6 and a vertical feed conveyor 61 disposed at the rear 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. 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 for driving the lifting hydraulic cylinder 4 and the like 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. 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 swash plate angles (shift control) of the left and right traveling hydraulic pumps 65, respectively. The left and right crawler belts 2 are driven independently from each other, and the traveling machine body 1 is configured to move forward or backward.

As shown in FIGS. 4, 7, and 8, a barrel driving case 71 that supports a threshing input shaft 72 is provided. A threshing input shaft 72 is connected to the traveling drive input shaft 64 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 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 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.

Furthermore, 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 supported 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.

As shown in FIGS. 1, 4, 7, and 9, a reaping device 3, a threshing device 9 having a handling cylinder 21, and a traveling machine body 1 having a driving seat 42 are provided, and a feeder is fed from the reaping device 3 to the threshing device 9. In an ordinary combine that supplies cereals via a house 11 and a beater 18, the engine 7 is mounted on the rear part of the traveling machine body 1, and the engine 7 is mounted on the rear end side of the handling cylinder shaft 20 on which the handling cylinder 21 is pivotally supported. While transmitting the power, the power of the engine 7 is transmitted from the front end side of the handling shaft 20 to the cutting device 3 and the beater 18, the beater 18 is driven via the handling shaft 20, and the cutting device 3 is connected via the beater 18. Since the engine 7 is arranged at the rear part of the traveling machine body 1, the large reaping device 3 having a wide cutting width can be stably supported, and the longitudinal balance of the traveling machine body 1 is improved. it can. 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.

As shown in FIGS. 4, 7, and 9, the threshing device 9 is provided with a grain sorting mechanism 10, and a sorting input belt as a sorting drive belt of the grain sorting mechanism 10 is provided on the front end side of the barrel 20. 235, the swing sorting belt 236, and the conveyor drive belt 237 are connected so that the power of the engine 7 is transmitted from the front end side of the barrel shaft 20 to the grain sorting mechanism 10. It is possible to simplify the drive input structure of the grain sorting mechanism 10 that transmits For example, the sorting input belt 235, the swing sorting belt 236, and the conveyor drive belt 237 can be shortened as compared with a structure in which the power of the engine 7 is transmitted to the grain sorting mechanism 10 without using the barrel shaft 20. In the grain sorting mechanism 10, power can be transmitted from the engine 7 at the rear of the traveling machine body 1 to each sorting input unit in order from the sorting input unit on the high rotation side (the Chinese fan 29). The plurality of input parts of the grain sorting mechanism 10 can be arranged and driven in order from the high rotation side (the tang fan 29), with almost no restriction on the installation position of the engine 7. For example, the Kara fan 29, the first conveyor mechanism 30, the second conveyor mechanism 31, the swing sorter 26, etc. are rotated at an appropriate rotation speed by a small number of sort input belts 235, swing sort belts 236, and conveyor drive belts 237. Can operate.

As shown in FIGS. 4, 7, and 9, the threshing device 9 is provided with a grain sorting mechanism 10, and the grain tank 6 is arranged on one side of the threshing device 9, and the other side of the threshing device 9 The cutting drive belt 241 that transmits power to the cutting device 3 and the sorting input belt 235, the swing sorting belt 236, and the conveyor driving belt 237 that transmit power to the grain sorting mechanism 10 are extended in the longitudinal direction. Therefore, replacement or maintenance work of the cutting drive belt 241 or the sorting input belt 235, the swing sorting belt 236, the conveyor driving belt 237, etc. can be easily performed from the side of the machine body opposite to the Glen tank 6 installation side. . Since it is not necessary to secure the installation space of the drive belt mechanism on both the left and right sides of the reaping device 3 and the threshing device 9, the arrangement structure of the engine 7 or the threshing device 9 is not restricted to each other, and the reaping drive belt 241 or the selection input belt 235 is provided. The swing sorting belt 236, the conveyor drive belt 237 and the like can be easily replaced, and the maintenance workability of the drive belt structure can be improved. Further, it is not necessary to secure an installation space for the sorting input belt 235, the swing sorting belt 236, the conveyor drive belt 237, etc. between the threshing device 9 and the Glen tank 6, and the threshing device 9 and the Glen tank 6 are arranged close to each other. It can be improved balance between the left and right direction or the front-rear direction of the vehicle body 1.

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 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 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.

With the above configuration, by discharging the grains in the grain tank 6 from the

grain discharge ports

221, 222, the grains in the grain tank 6 can be discharged without interrupting the mowing and threshing operation. 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 combine hydraulic structure and the traveling drive structure will be described with reference to FIGS. 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 through a horizontal control electromagnetic hydraulic valve 253 that is controlled by operation of the horizontal control switch 254. When the operator operates the horizontal control switch 254 to operate the horizontal control hydraulic cylinder 19, the left-right inclination of the traveling machine body 1 is maintained at a horizontal or arbitrary inclination. As shown in FIGS. 5, 6, and 9, 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. is 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 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. track 2 of left and right driven in the forward direction or backward direction.

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. A left and right closed hydraulic circuit 261 is connected to the high pressure oil discharge side of the charge pump 68 via an oil cooler 264 and a line filter 265 so that the hydraulic oil in the oil tank 266 is supplied to the left and right closed 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. 11 to 15, the pump case 66 in which the left and right traveling hydraulic pumps 65 are built is mounted on the engine 7 mounted on the right upper surface of the rear portion of the traveling machine body 1 and on the left upper surface of the traveling machine body 1. The threshing device 9 is fixed to the upper surface side of the traveling machine body 1 via the front support body 271 and the rear support body 272 between the right side wall body of the threshing device 9. A U-shaped intermediate portion of the front support body 271 is fastened to the upper surface of the traveling machine body 1 with bolts 273. The left and right sides of the pump case 66 are fastened with bolts 274 to both U-shaped ends of the front support 271. That is, the front part of the pump case 66 in which the charge pump 68 is disposed is supported by the traveling machine body 1 by the front support body 271.

12 to 14, the bottom side of the rear support 272 is fastened with bolts 276 to the mounting base 275 on the top side of the traveling machine body 1. The rear side of the pump case 66 is fastened to the front side of the rear support 272 with bolts 277. A support arm body 272a extends rearward from the rear surface of the rear support body 272, and the lower end side of the rear bearing body 278 is fastened to the rear end portion of the support arm body 272a with a bolt 279.

Also, the rear end side of the travel drive input shaft 64 protrudes rearward from the rear surface of the pump case 66, and the travel drive input shaft 64 is passed through the rear support body 272 and the rear bearing body 278. An engine output transmission pulley 280 for suspending an engine output belt 231 and a threshing output transmission pulley 281 for suspending a threshing drive belt 232 are supported on a travel drive input shaft 64 between the rear support 272 and the rear bearing body 278. To do. A grain discharge drive pulley 282 for suspending the grain discharge belt 244 is pivotally supported at the rear end portion of the travel drive input shaft 64 protruding rearward from the rear bearing body 278.

With the above configuration, the driving force output from the engine 7 is branched and transmitted by the traveling drive input shaft 64 as a counter shaft. That is, the output of the engine 7 is transmitted from the travel drive input shaft 64 to the left and right travel hydraulic pumps 65. Further, the output of the engine 7 is transmitted from the threshing output transmission pulley 281 on the travel drive input shaft 64 to the barrel shaft 20 of the threshing device 9 via the threshing drive belt 232. On the other hand, the output of the engine 7 is transmitted from the grain discharge drive pulley 282 on the travel drive input shaft 64 to the grain discharge auger 8 via the grain discharge belt 244.

16 and 17, the reduction gear case 63 has a first housing 291, a second housing 292, and a third housing 293. The first housing 291 is bolted to one end of the second housing 292, the third housing 293 is bolted to the other end of the second housing 292, and an appropriate amount of lubricating oil is supplied into the reduction gear case 63 configured in a sealed structure. Put in. A traveling hydraulic motor 69 is disposed on the outer surface of the first housing 291 via an oil passage base body 294. A traveling hydraulic motor 69 is hydraulically connected to the traveling hydraulic pump 65 via an oil passage base body 294 and hydraulic piping (not shown). A brake mechanism 297 having a brake lever 296 is provided on one end side of the motor shaft 295 of the traveling hydraulic motor 69. The motor shaft 295 is braked by operating the brake lever 296.

Also, the other end of the motor shaft 295 is inserted into the first housing 291 and the second housing 292. A reduction intermediate shaft 298 is pivotally supported on the first housing 291, the second housing 292, and the third housing 293. One end side of the reduction intermediate shaft 298 is connected to the other end side of the motor shaft 295 through a first reduction gear group 299 as the reduction gear mechanism 263. The traveling axle 300 is pivotally supported by the second housing 292 and the third housing 293. The traveling axle 300 is protruded from the third housing 293, and the drive sprocket 51 is pivotally supported on the protruding end portion of the traveling axle 300. The other end side of the reduction intermediate shaft 298 is connected to the traveling axle 300 via the second reduction gear group 301 as the reduction gear mechanism 263.

With the above configuration, when the traveling hydraulic motor 69 is driven by the traveling hydraulic pump 65, the rotation of the motor shaft 295 is transmitted to the reduction intermediate shaft 298 through the first reduction gear group 299, and the second reduction gear group is transmitted. The rotation of the deceleration intermediate shaft 298 is transmitted to the traveling axle 300 through 301, and the crawler belt 2 is driven forward or backward by the drive sprocket 51.

As shown in FIGS. 11, 16, and 17, the left traveling hydraulic motor 69 is inclined obliquely forward and upward with respect to the left traveling axle 300 in the assembled state in which the reduction gear case 63 is fixed to the rear end portion of the track frame 50. On the other hand, the right traveling hydraulic motor 69 is supported obliquely upward and rearward with respect to the right traveling axle 300. That is, the left and right traveling hydraulic motors 69 are supported at the same height as the non-grounded side of the crawler belt 2 and the left traveling hydraulic motor 69 is displaced forward and supported with respect to the traveling axle 300, so that the traveling axle 300 is supported. On the other hand, the right traveling hydraulic motor 69 is displaced backward and supported.

As a result, as shown in FIG. 16, two sets of left and right reduction gear cases 63 are symmetrically arranged around an axle center line 305 connecting the axis centers of the left and right traveling axles 300. Therefore, even if the sum of the left and right width dimensions L1 of the two sets of left and right reduction gear cases 63 that support the traveling hydraulic motor 69 is larger than the reduction gear case installation interval L2 between the left and right crawler belts 2, the left and right traveling hydraulic motors 69 have the same height. mounted in a state where the supporting misaligned back and forth in the position. In that case, the left and right brake levers 296 are disposed close to the center of the left and right width of the traveling machine body 1. Further, as shown in FIG. 11, two sets of left and right reduction gear cases 63 are supported in a gate shape in a rear view (front view). The interior space formed in the gate shape of the left and right reduction gear cases 63 is configured such that the mud in the field moves and the traveling movement resistance of the crawler belt 2 is reduced.

As shown in FIG. 1 and FIG. 11 to FIG. 17, a reaping device 3, a threshing device 9 having a handling cylinder 21, and a traveling machine body 1 having left and right crawler belts 2 are provided. In the supplied combine, the left and right track frames 50 provided with the left and right crawler belts 2 are respectively provided with reduction gear cases 63 as left and right traveling drive cases, and the crawler belts 2 are provided at the output portions of the left and right reduction gear cases 63. The left and right drive hydraulic motors 69 respectively provided at the input portions of the left and right reduction gear cases 63 are respectively supported on the inner side of the left and right crawler belts 2 on the non-grounded side. Since the traveling hydraulic motor 69 can be supported outside the crawler belt 2, the traveling hydraulic motor 69 can be attached / detached or the hydraulic piping work can be simplified. Although the manufacturing cost of the traveling hydraulic motor 69 can be easily reduced and the maintenance workability of the traveling hydraulic motor 69 can be improved, the overall height and width of the combine body can be made compact, and the upper surface side of the traveling body 1 can be configured. The supporting height of the threshing device 9 or the Glen tank 6 installed on the machine can be lowered, and the machine body can be prevented from falling over easily. Moving workability such as going into and out of the field or getting over the shore can be improved.

For example, in the civil engineering machine in which the driver's seat, the engine, and the working unit are integrally pivotable, the non-grounding side of the crawler belt 2 can be configured higher, and therefore the reduction gear case 63 can be supported at a position lower than the non-grounding side of the crawler belt 2. However, in the combine that installs the driver's seat 42 and the engine and the working unit (threshing device 9 and the like) using the entire upper surface side of the traveling machine body 1, it is necessary to install the crawler belt 2 below the traveling machine body 1. When the traveling hydraulic motor 69 is supported at a position lower than the non-grounding side of 2, the traveling hydraulic motor 69 is supported close to the field scene. Although there is a problem that a lot of mud in the field adheres to the traveling hydraulic motor 69 or a large amount of cigarette wraps around the traveling hydraulic motor 69, the traveling resistance of the crawler belt 2 tends to increase. Then, it is possible to prevent a large amount of mud in the field from adhering to the traveling hydraulic motor 69, or it is possible to prevent the grass from being wound around the traveling hydraulic motor 69, and the traveling resistance of the crawler belt 2 can be reduced.

As shown in FIGS. 11 to 17, the drive sprocket 51 is provided on the outer surface of the lower part of the reduction gear case 63, the traveling hydraulic motor 69 is provided on the inner surface of the upper part of the reduction gear case 63, and two sets of left and right reduction gear cases 63 and the traveling hydraulic motor are provided. 69 is arranged in a gate shape when viewed from the front. For example, even when the crawler belt 2 sinks greatly in mud during a harvesting operation such as a wet field, the two sets of the reduction gear case 63 and the traveling hydraulic motor 69 It is possible to prevent the mud in the field from being smoothly discharged from the space on the lower side and increasing the running resistance of the crawler belt 2. The soil removal resistance of the crawler belt 2 can be reduced to improve the running performance in the wetland. The ground support height of the traveling hydraulic motor 69 can be increased, and the hydraulic piping structure to the traveling hydraulic motor 69 can be simplified.

As shown in FIGS. 11 to 17, the left and right traveling hydraulic motors 69 are arranged in front-rear symmetrical positions in plan view around the axle center line 305 connecting the axis of the left and right drive sprockets 51. The two sets of left and right traveling hydraulic motors 69 and the reduction gear case 63 are formed in the same structure and can be shared as a drive source for the left and right crawler belts 2. Further, even if the lateral width dimension of the traveling hydraulic motor 63 or the reduction gear case 63 is such that the traveling hydraulic motor 69 protrudes to the opposite side of the center of the machine body, the lateral installation distance of the left and right crawler belts 2 is limited. The two sets of left and right traveling hydraulic motors 69 and the reduction gear case 63 can be easily assembled between the left and right crawler belts 2. For example, the left and right traveling hydraulic motors 69 can be spaced apart from each other even when the distance between the left and right crawler belts 2 is smaller than the left and right width dimensions of the left and right reduction gear cases 63 and the traveling hydraulic motor 69. . Possible that the mud is deposited between the left and right traveling hydraulic motors 69. Further, it is possible to prevent the grass from being wound between the left and right traveling hydraulic motors 69. Maintenance workability of the traveling hydraulic motor 69 can be improved.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Crawler belt 3 Cutting device 9 Threshing device 21 Handling cylinder 50 Track frame 51 Drive sprocket 63 Reduction gear case (traveling drive case)
69 Traveling hydraulic motor 305 Axle centerline

Claims

In a combine that includes a reaping device, a threshing device having a handling cylinder, and a traveling machine body having left and right crawler belts, and supplying cereals from the reaping device to the threshing device,
The left and right traveling drive cases are respectively installed on the left and right track frames on which the left and right crawler tracks are installed, and the left and right driving sprockets for the crawler tracks are respectively pivotally supported at the output portions of the left and right traveling drive cases. The left and right traveling hydraulic motors respectively provided at the input portions of the left and right traveling drive cases are configured to be supported at the non-grounding side height position on the inner side of the left and right crawler belts on the non-grounding side. A featured combine.
The driving sprocket is provided on the outer surface of the lower part of the traveling drive case, the traveling hydraulic motor is provided on the inner surface of the upper part of the traveling drive case, and the two sets of the left and right traveling drive cases and the traveling hydraulic motor are viewed from the front. The combine according to claim 1, wherein the combine is arranged in a gate shape.
The combine according to claim 1, wherein the left and right traveling hydraulic motors are arranged at symmetrical positions in plan view about an axle center line connecting the axis of the left and right drive sprockets.