WO2017159547A1

WO2017159547A1 - Combine

Info

Publication number: WO2017159547A1
Application number: PCT/JP2017/009586
Authority: WO
Inventors: 直哉池田; 村山　昌章; 山中　健史; 直也徳永
Original assignee: ヤンマー株式会社
Priority date: 2016-03-14
Filing date: 2017-03-09
Publication date: 2017-09-21

Abstract

This combine is provided with: a reaping part 3 having a reaping blade 15; a threshing part 9 having a threshing cylinder 21; a traveling machine body 1 provided with a traveling part 2 and an engine 7; and a transmission case 63 and a hydraulic continuously variable transmission 64 that drive the traveling part 2, wherein grain culms are fed from the reaping part 3 to the threshing part 9. A hydraulic oil tank 55 for supplying hydraulic oil to the hydraulic continuously variable transmission 64 above the transmission case 63 is attached between a lower machine body frame 1a and an upper machine body frame 1b that form the traveling machine body 1 in a vertical multi-staged structure.

Description

Combine

The invention of the present application relates to a combine equipped with a harvesting unit that harvests uncut cereal grains in a field and a threshing unit that threshs grains of the harvested cereal grains.

Conventionally, a cutting part having a grain header, a feeder house and a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with a traveling part and an engine, and a bowl for taking out the grain from the threshing part via a grain discharge conveyor. There is a technique for continuously cutting and threshing uncut cereal straws in the field, and filling the sack bags of the straw catcher with the grains of the threshing part (see Patent Documents 1 to 3).

Japanese Patent Laid-Open No. 11-103646 JP-A-9-28173 Japanese Patent No. 3554144

In harvesting operations in small-area farms, it is desired to combine a lightweight structure that can make the entire body compact while ensuring the harvesting width of cereals. In the prior art, when the handling cylinder is arranged in the left-right direction of the traveling machine body, compared to the structure in which the handling cylinder is arranged in the front-rear direction of the traveling machine body, the front-rear width of the threshing portion can be reduced, but on the flat upper surface side of the traveling machine body. Since an engine or a threshing unit is arranged in parallel, there is a structural problem such that the size reduction of the entire combine cannot be easily considered. Patent Documents 1 to 3 include a hydraulic continuously variable transmission provided in a transmission case for driving a traveling unit, an oil cooler that cools hydraulic oil of the hydraulic continuously variable transmission, and a cooling fan. Since Document 1 to Patent Document 3 are travel unit drive structures suitable for high-power engines, a travel unit drive structure suitable for small-power engines mounted on a small and lightweight combine harvester cannot be easily configured. There is a problem. For example, the threshing unit is mounted on the upper surface of the traveling machine body in a horizontal orientation toward the left and right direction, the engine and the hook part are arranged behind the threshing part, and the rear left and right rear parts of the traveling machine body There is a structural problem such as a small and lightweight combine cannot be configured by arranging the saddle receiving portion and the steering column side by side.

Therefore, the present invention seeks to provide 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 cutting part having a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with a traveling part and an engine, and a mission for driving the traveling part. In a combine that includes a case and a hydraulic continuously variable transmission and supplies cereal to the threshing portion from the reaping portion, the transmission case is formed between the lower body frame and the upper body frame that form the traveling body in an upper and lower multistage structure. A hydraulic oil tank for supplying hydraulic oil to the upper hydraulic continuously variable transmission is attached.

According to a second aspect of the present invention, in the combine according to the first aspect, the threshing portion is mounted on the upper surface of the traveling machine body in a horizontal orientation in the left-right direction, and the engine and the catching portion are disposed behind the threshing portion. The engine is mounted on the upper surface of the upper fuselage frame, and the front side of the lower fuselage frame is extended forward of the front end side of the upper fuselage frame. The said threshing part is mounted, and the said hydraulic oil tank is arrange | positioned under the said threshing part rear side and the engine front side.

According to a third aspect of the present invention, in the combine according to the first aspect, the transmission case has a structure in which a mission case, a saddle receiving portion, and a steering column are arranged in parallel at the rear of the traveling body, and the hydraulic continuously variable transmission at the top of the transmission case. A hydraulic pipe for hydraulically connecting the machine and the hydraulic oil tank in the front part of the traveling machine body is extended between the lower machine frame and the upper machine frame.

According to a fourth aspect of the present invention, in the combine according to the first aspect, the threshing portion is mounted on the upper surface of the traveling machine body in a horizontal posture in the left-right direction, and the hydraulic oil tank is disposed behind the threshing portion. The hydraulic oil tank is fastened and fixed to the lower machine frame and the upper machine frame, and an oil filter or the like is built in the hydraulic oil tank, and an oil cap is provided on the upper surface of the hydraulic oil tank. A drain cap is provided at the lower front.

The invention according to claim 5 is the combine according to claim 1, wherein the mission case is arranged at the rear part of the traveling machine body, and the threshing part is mounted on the upper surface of the traveling machine body in a horizontal posture in the horizontal direction. An engine and a saddle receiving part are arranged behind the threshing part, and a saddle receiving part and a steering column are arranged side by side on the left and right rear parts on the rear side of the engine, and a transmission path between the engine and the hydraulic continuously variable transmission An intermediate shaft is provided, and an oil cooler for cooling the hydraulic oil of the hydraulic continuously variable transmission and a cooling fan are installed in the vicinity of the intermediate shaft.

According to a sixth aspect of the present invention, in the combine according to the first aspect, the hydraulic oil tank is supported by a vertical body frame that connects the lower body frame, the lower body frame, and the upper body frame. It is what I did.

According to a seventh aspect of the present invention, in the combine according to the first aspect, the first hydraulic oil supply port that is hydraulically connected to the hydraulic continuously variable transmission, and the hydraulic cylinder for raising and lowering that moves the cutting part up and down are hydraulically operated. The second hydraulic oil supply port to be connected is arranged on the front and rear side surfaces of the hydraulic oil tank.

According to an eighth aspect of the present invention, in the combine according to the seventh aspect, a flange member in which the first or second hydraulic oil supply port is disposed and detachably attached to a side surface of the hydraulic oil tank; A pair of oil filter units provided with an oil filter disposed in the oil tank is mounted in a distributed manner on the front and rear side surfaces of the hydraulic oil tank, and partially overlaps in the front and rear direction and the left and right direction in the hydraulic oil tank. They are arranged side by side.

According to the first aspect of the present invention, a cutting part having a cutting blade, a threshing part having a handling drum, a traveling machine body provided with a traveling part and an engine, a transmission case for driving the traveling part, and a hydraulic continuously variable transmission A hydraulic continuously variable transmission at the upper part of the transmission case between a lower body frame and an upper body frame that form a traveling multi-stage structure in a combine that supplies cereals from the mowing unit to the threshing unit. Since the hydraulic oil tank for supplying the hydraulic oil to the machine is installed, the hydraulic oil tank installation location with good cooling efficiency at a position lower than the engine without limiting the size of the hydraulic oil tank Can be easily secured. A traveling unit drive structure suitable for a small output engine mounted on a small and light-weight combine combiner can be easily configured. For example, the threshing portion is mounted on the upper surface of the traveling machine body in a lateral orientation directed in the left-right direction, and an engine and a saddle receiving part are disposed behind the threshing part, and the rear side of the engine among the rear part of the traveling machine body A small and lightweight combine combiner can be constructed by arranging a rod receiving part and a steering column in parallel at the left and right rear parts.

According to invention of Claim 2, it is the structure which mounts the said threshing part in the runner body upper surface in the horizontal posture toward the left-right direction, and arranges an engine and a guard part behind the threshing part, The engine is mounted on the upper surface of the upper body frame, the front end side of the lower body frame is extended forward of the front end side of the upper body frame, and the threshing portion is placed on the upper surface of the front end side of the lower body frame. Since the hydraulic oil tank is disposed below the threshing portion rear side and the engine front side, even if the engine is placed close to the rear of the threshing portion in a horizontal posture, The hydraulic oil tank having a large capacity can be easily supported below the threshing portion and the engine.

According to a third aspect of the present invention, the transmission case has a structure in which a transmission case, a saddle receiving portion, and a steering column are arranged in parallel at the rear part of the traveling machine body, the hydraulic continuously variable transmission at the upper part of the transmission case, and the front of the traveling machine body Since the hydraulic piping that hydraulically connects the hydraulic oil tank of the part extends between the lower body frame and the upper body frame, the lower body frame and the upper body frame surround the upper and lower sides of the hydraulic piping, The hydraulic oil tank surrounds the front side of the hydraulic piping, and the hydraulic piping can be easily protected. The hydraulic oil tank and hydraulic piping can be secured at a position lower than the engine (on the lower side of the upper fuselage frame), and the hydraulic oil tank in front of the engine is connected to the hydraulic continuously variable transmission in the rear of the engine. The piping structure can be simplified, and the assembly workability of the hydraulic piping can be improved.

According to the invention described in claim 4, the threshing portion is mounted on the upper surface of the traveling machine body in a horizontal orientation in the left-right direction, the hydraulic oil tank is disposed behind the threshing part, and the lower machine body frame and the upper part The hydraulic oil tank is fastened and fixed to the fuselage frame, and an oil filter or the like is built in the hydraulic oil tank, an oil cap is provided on the upper surface of the hydraulic oil tank, and a drain cap is provided on the lower front portion of the hydraulic oil tank. Therefore, a working space related to the hydraulic oil tank can be easily secured between the rear portion of the threshing portion and the front portion of the engine. For example, the opening / closing operation of the oil cap or the drain cap can be easily executed. The operation of attaching and detaching the hydraulic oil tank, the operation of connecting hydraulic piping, the operation of replenishing the hydraulic oil to the hydraulic oil tank, and the like can be simplified, and maintenance such as replacement of the oil filter can be easily performed.

According to invention of Claim 5, while arrange | positioning a mission case in the said traveling machine body rear part, the said threshing part is mounted in a traveling machine body upper surface in the horizontal attitude | position toward the left-right direction, and an engine and the rear of the threshing part A saddle receiving portion is arranged, and a saddle receiving portion and a steering column are arranged in parallel on the left and right rear portions on the rear side of the engine, and an intermediate shaft is provided in a transmission path between the engine and the hydraulic continuously variable transmission, Since the oil cooler and the cooling fan for cooling the hydraulic oil of the hydraulic continuously variable transmission are installed in the vicinity of the intermediate shaft, the hydraulic continuously variable transmission, the oil cooler, and the cooling fan are provided, and high running performance is achieved. While it is possible to easily configure the traveling unit drive structure, it is possible to easily configure a combine having a small and light structure.

According to the invention described in claim 6, the hydraulic oil tank is supported by the lower machine frame, and the vertical machine frame that connects the lower machine frame and the upper machine frame. The hydraulic oil tank can be firmly supported by the lower machine frame and the vertical machine frame constituting the traveling machine body, and the hydraulic oil tank can be arranged in a space surrounded by the upper machine frame, the lower machine frame and the vertical machine frame, Safety can be improved by preventing the hydraulic oil tank from falling off or being damaged by foreign object collision.

According to the seventh aspect of the present invention, the first hydraulic oil supply port that is hydraulically connected to the hydraulic continuously variable transmission and the second hydraulic oil that is hydraulically connected to the lifting hydraulic cylinder that moves the mowing unit up and down. Since the supply ports are arranged on the front and rear sides of the hydraulic oil tank, the supply hydraulic pipe connected to the hydraulic continuously variable transmission and the supply hydraulic pipe connected to the lifting hydraulic cylinder Can be connected to the hydraulic oil tank by distributing it to the front and rear sides of the hydraulic oil tank, and access to either of the two supply hydraulic pipes can be made from the front or rear of the hydraulic oil tank, so that maintenance such as installation and removal of supply hydraulic pipes can be performed. Improves.

According to the eighth aspect of the present invention, the first or second hydraulic oil supply port is disposed, and the flange member is detachably attached to the side surface of the hydraulic oil tank, and is disposed in the hydraulic oil tank. Since the pair of oil filter units provided with the oil filter is distributed and attached to the front and rear side surfaces of the hydraulic oil tank, either one of the two oil filter units from the front and rear of the hydraulic oil tank is installed. Since it can be accessed, maintenance such as installation and removal of the oil fill unit is improved. Further, since the pair of oil filter units are arranged in a partially overlapping manner in the front-rear direction and the left-right direction in the hydraulic oil tank, both oil filter units can be arranged at the same height position, The arrangement area of both oil filter units can be reduced in plan view, and the hydraulic oil tank can be made compact. Further, if both oil filter units are mounted on the hydraulic oil tank at a position higher than the crawler belt constituting the traveling portion, the oil filter unit can be easily attached and detached from the side of the traveling machine body. And maintainability is improved.

It is a left view of the ordinary combine which shows 1st Embodiment of this invention. It is a top view of the combine. It is a right view of the combine. FIG. 2 is an enlarged explanatory view of FIG. 1. FIG. 3 is an enlarged explanatory view of FIG. 2. FIG. 4 is an enlarged explanatory view of FIG. 3. It is a perspective view of the traveling machine body seen from the left rear. FIG. 8 is an enlarged explanatory diagram of FIG. 7. It is a perspective view of the traveling body viewed from the right front. FIG. 10 is an enlarged explanatory view of FIG. 9. It is a drive system diagram of a normal type combine. It is a hydraulic circuit diagram of a normal type combine. It is right side explanatory drawing which shows the drive transmission part of an engine. It is expansion explanatory drawing of FIG. It is right side sectional drawing of a threshing part. It is a right view of a traveling body and a mission case part. It is a top view of a traveling body and a mission case part. It is a perspective view of the traveling body and mission case part seen from the right front. It is a perspective view of the mission case part seen from the right front. It is a hydraulic circuit diagram which shows the modification of FIG. It is a hydraulic circuit diagram which shows the modification of FIG. It is a drive system figure which shows 2nd Embodiment. It is a left view of the traveling body which shows 2nd Embodiment, and a mission case part. It is left explanatory drawing which shows the drive transmission part of the engine which shows 2nd Embodiment. It is a perspective view of the traveling body viewed from the left rear side showing the second embodiment. It is a perspective view of the traveling body seen from the right front side which shows a 2nd embodiment. It is a top view of the traveling body and mission case part which show a 2nd embodiment. It is expansion explanatory drawing of FIG. It is a right view of the traveling body which shows 3rd Embodiment, and a mission case part. It is a top view of the traveling body and mission case part which show a 3rd embodiment. It is a perspective view of the traveling body and mission case part seen from the right front side which shows a 3rd embodiment. It is right side sectional drawing of the traveling body and hydraulic oil tank which show 3rd Embodiment. It is a plane sectional view of a run body and a hydraulic oil tank. It is a perspective view of the hydraulic oil tank seen from the left rear which shows a 3rd embodiment. It is an exploded view of the hydraulic oil tank seen from the left front side which shows a 3rd embodiment.

Hereinafter, an embodiment embodying the present invention will be described based on the drawings (FIGS. 1 to 15) applied to an ordinary combine. First, the general structure of a general combine will be described with reference to FIGS. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side.

As shown in FIGS. 1 to 6, the ordinary combine in the embodiment includes a traveling machine body 1 supported by a pair of left and right crawler belts 2 made of rubber crawlers as a traveling portion. At the front part of the traveling machine body 1, a harvesting part 3 that is taken in while harvesting uncut grain cereal such as rice (or wheat) is mounted by a single-acting lifting hydraulic cylinder 4 so as to be adjustable up and down.

A threshing unit 9 for threshing the harvested cereal meal supplied from the harvesting unit 3 is mounted on the front upper surface of the traveling machine body 1. Inside the threshing unit 9, a handling cylinder 21 is disposed as a cereal threshing rotor described later. On the right side of the rear part of the traveling machine body 1, a driving operation unit 5 that is operated by an operator while walking is mounted. An engine 7 as a power source for each part of the combine is disposed in the central part of the traveling machine body 1. On the rear left side of the traveling machine body 1 (on the left side of the driving operation unit 5), there is arranged a hook receiving unit 6 for taking the grain from the threshing unit 9. The grain in the threshing part 9 is carried out by the grain discharge conveyor 8 toward the bowl receiving part 6. An air passage forming duct body 10 serving as a grain sorting unit for sorting out cereals is provided at the feed terminal of the grain discharge conveyor 8 in a low posture before and after high posture.

The cutting unit 3 includes a feeder house 11 that communicates with the handling port supply unit at the front of the threshing unit 9, and a horizontally long bucket-shaped grain header 12 that is connected to the front end of the feeder house 11. A scraping auger 13 (platform auger) is rotatably supported in the grain header 12. A take-up reel 14 with a tine bar is disposed above the front portion of the take-up auger 13. A clipper-shaped cutting blade 15 is disposed in front of the grain header 12. Left and right weed bodies 16 are provided to project from the left and right sides of the front part of the grain header 12. In addition, a supply conveyor 17 is installed in the feeder house 11. The lower surface portion of the feeder house 11 and the front end portion of the traveling machine body 1 are connected via a lifting hydraulic cylinder 4, and the cutting portion 3 moves up and down using a cutting input shaft 18 (feeder house conveyor shaft) described later as a lifting fulcrum. The hydraulic cylinder 4 is moved up and down.

With the above configuration, the tip of the uncut grain culm between the left and right weed bodies 16 is scraped by the scraping reel 14, and the uncut grain culm is trimmed by the cutting blade 15. The harvested cereal grains are collected near the entrance of the feeder house 11 near the center of the left and right width of the grain header 12. The whole amount of the harvested cereal meal of the grain header 12 is conveyed by the supply conveyor 17 in the feeder house 11 and is put into the treatment chamber 22 from the treatment port supply plate 9a provided on the left side of the threshing part 9. ing.

Also, as shown in FIGS. 4 to 6, a handling cylinder 21 is rotatably provided in the handling chamber 22 of the threshing unit 9. A handling cylinder 21 is pivotally supported on a handling cylinder shaft 20 extended in the left-right direction of the traveling machine body 1. On the lower side of the handling cylinder 21, a receiving net 24 for allowing the grains to leak is stretched. In addition, a handling port supply plate 9 a that communicates with the cereal feed end side of the supply conveyor 17 is formed in the lower left portion of the handling chamber 22, while a dust outlet 23 is formed in the lower right portion of the handling chamber 22. . That is, a horizontal handling posture cylinder 21 is mounted on the front part of the traveling machine body 1 and the feeder house 11 is disposed at the left end of the threshing part 9, and the feeder house 11 that is long in the front-rear direction is provided. It is comprised so that the moving direction of the harvested cereal meal in the threshing part 9 of the horizontal placement posture may be changed to the orthogonal direction.

With the above-described configuration, the harvested cereal mash introduced from the handling port supply plate 9 a by the supply conveyor 17 is conveyed from the left side to the right side of the traveling machine body 1 by the rotation of the handling cylinder 21, while the handling cylinder 21 and the receiving net 24. And kneaded in between. The threshing of grains or the like smaller than the mesh of the receiving net 24 leaks from the receiving net 24. The sawdust or the like that does not leak from the receiving net 24 is discharged from the dust outlet 23 on the lower right side of the handling chamber 22 to the cut surface of the farm field through the upper surface side of the right crawler belt 2 by the conveying action of the handling cylinder 21. It is configured.

Also, as shown in FIGS. 4 to 6, an air passage forming duct body disposed at the feed end portion on the rear end side of the grain discharge conveyor 8 in the front, low, and high posture as a grain selecting portion for selecting threshing. 10 and a suction fan device 34 that sucks and exhausts dust by introducing the sorting air into the air passage forming duct body 10. A grain takeout conveyor 36 is placed horizontally below the receiving net 24, and the threshing that has been threshed by the handling cylinder 21 and leaked from the receiving net 24 is made to pass through the grain takeout conveyor 36 and the grain discharge conveyor 8. The cereal grains carried into the air passage forming duct body 10 through the air passage forming duct body 10 are converted into heavy grains, light shavings, and the like by the air sorting action of the suction fan device 34. It is configured to be sorted.

On the other hand, on the left side of the threshing section 9, the grain discharging conveyor 8 is extended between the threshing section 9 and the ridge receiving section 6 in a front low and high posture. The feed start end side of the front end portion of the grain discharge conveyor 8 is connected to the feed end side of the left end portion of the grain take-out conveyor 36. A grain take-out conveyor 36 is provided inside the V-shaped grain take-out bottom of the threshing section 9. The grains that have leaked from the receiving net 24 to the grain takeout conveyor 36 are transferred from the left end of the grain takeout conveyor 36 to the front end of the grain discharge conveyor 8, and the air passage forming duct on the rear end side of the grain discharge conveyor 8. It is configured to be transferred from the body 10 to the bag receiving unit 6 and collected in the bag 37 of the bag receiving unit 6.

That is, the rod receiving portion 6 is connected to the left rear end portion of the traveling machine body 1 via the stand support frame 38a, and the rod mount attached to the left rear end portion of the traveling vehicle body 1 via the column frame body 39. An arm body 39a is provided. Further, the air path forming duct body 10 is supported on the upper end side of the support frame body 39, and the filling hopper 19 is provided at the grain outlet of the air path forming duct body 10, and the straw bag 37 is provided on the saddle receiving arm body 39a. The opening of the straw bag 37 is attached to the hanging and filling hopper 19, and the grains discharged from the filling hopper 19 are filled into the straw bag 37.

On the other hand, as shown in FIGS. 4 to 6, a steering column 41 is disposed in the driving operation unit 5. The steering column 41 is used to drive or stop the left and right side clutch levers 43 and 44 that change the course of the traveling machine body 1, the traveling speed change lever 45 that switches the traveling speed of the traveling machine body 1, and the reaping part 3 or the threshing part 9. A working clutch lever 46, a cutting lift lever 47 for lifting and lowering the cutting unit 3, and a parking brake lever 48 are arranged. In addition, a walking handle 49 is protruded rearward on the rear side of the steering column 41, and the accelerator lever 40 is attached to the left grip portion of the walking handle 49. Left and right side clutch levers 43, 44, a mowing lift lever 47, and a travel speed change lever 45 are arranged in parallel in order from the right side on the upper surface side of the control column 41, and the operation position of the travel speed change lever 45 on the inner side of the body is set. It is formed higher than the operation position of the

other levers

43, 44, 46, 47, and the traveling speed change lever 45 that is operated less frequently during the harvesting operation that moves the field at a substantially constant speed is supported on the inner side of the machine body. The side clutch levers 43 and 44 and the mowing lift lever 47, which are frequently operated during work, are configured to be supported on the outer side of the machine body.

7 and 8, a driver seat 42 on which an operator sits is detachably disposed behind the steering column 41. A driver's seat bracket body 111 is provided at the right rear end portion of the traveling machine body 1, and the front end portion of the driver's seat frame 112 is detachably bolted to the driver seat bracket body 111. Further, the rear end side of the driver's seat frame 112 extends substantially horizontally from the right rear end of the upper fuselage frame 1b to the rear, and the driver seat 42 is attached to the rear end portion of the driver's seat frame 112. A driver's seat 42 is arranged behind the driver's operation unit 5 via the driver so that an operator sitting on the driver's seat 42 can operate the

levers

43, 44, 45, 46, 47, 48, etc. of the driver's operating unit 5. is doing.

Further, as shown in FIGS. 7 and 8, a foot guard body 114 disposed between the feet of the operator sitting on the driver's seat 42 and the rear end of the right crawler belt 2 is provided. The guard body support frame 115 is extended downward from the lower surface side of the driver seat bracket body 111, the foot guard body 114 is fixed to the guard body support frame 115, and the operator's feet are in contact with the right crawler belt 2. The foot guard body 114 is configured to block. In addition, the footrest frame 112a is extended downward from the front and rear intermediate portion of the driver seat frame 112, the footrest 113 is fixed to the lower end portion of the footrest frame 112a, and the operator seated on the driver seat 42 The foot is configured to be placed on the footrest 113.

Further, as shown in FIGS. 7 to 10, left and right front support legs 32 and rear support legs 33 project downward from the lower surface side of the traveling machine body 1, and the left and right

support leg bodies

32, 33 protrude from the lower surface side of the traveling machine body 1. The left and right track frames 50 are arranged via the. The track frame 50 has a drive sprocket 51 that transmits the power of the engine 7 to the crawler belt 2, a tension roller 52 that is supported via a tension mechanism 53 that maintains the tension of the crawler belt 2, and the ground side of the crawler belt 2 is held in a grounded state. A plurality of track rollers 54 are provided. The front side of the crawler belt 2 is supported by the tension roller 52, the rear side of the crawler belt 2 is supported by the drive sprocket 51, the ground side of the crawler belt 2 is supported in a horizontal posture by the track roller 54, and the non-ground side of the crawler belt 2 is It is configured to support a low rear and high posture.

Next, the drive structure of the combine will be described with reference to FIGS. As shown in FIGS. 11 and 12, the transmission case 63 is provided with a hydraulic continuously variable transmission 64 for traveling speed change, in which the traveling hydraulic pump 30 and the traveling hydraulic motor 31 are built. The engine 7 is mounted on the center upper surface of the traveling machine body 1, and a mission case 63 is disposed at the rear of the traveling machine body 1 behind the engine 7. Further, a travel drive pulley 69 on the engine output shaft 65 projecting leftward from the engine 7 and a shift input pulley 70 on the speed change input shaft 66 projecting leftward from the transmission case 63 are connected to the front travel output belt 67a. And the rear traveling output belt 67b.

Further, the front traveling output belt 67a is tensioned by the tension roller type traveling clutch 68, and power is transmitted from the engine 7 to the transmission case 63 to drive the left and right crawler belts 2. As shown in FIGS. 8 and 14, an input pulley fan 70a is fixed to the outer surface of the left side of the transmission input pulley 70, and the hydraulic continuously variable transmission 64 is cooled by the input pulley fan 70a. .

In addition, as shown in FIGS. 10, 13, and 14, the intermediate frame 131 is erected in a backward inclined posture on the traveling machine body 1, and the left intermediate pulley 133 is connected to the upper end side of the intermediate frame 131 via the intermediate shaft 132. The right intermediate pulley 134 is pivotally supported so as to be integrally rotatable, and the front traveling output belt 67a is hung between the traveling drive pulley 69 and the left intermediate pulley 133 via the traveling clutch 68, and the right intermediate pulley 134 and the right intermediate pulley 134 are shifted. A rear traveling output belt 67b is wound around the input pulley 70. The transmission case 63 on the rear side of the engine 7 is disposed closer to the right side of the body with respect to the center line of the longitudinal direction of the body, and the mounting position of the transmission input pulley 70 is formed closer to the center of the traveling body 1 than the mounting position of the traveling drive pulley 69. .

The input pulley fan 70a supported by the transmission input pulley 70 on the rear end side of the rear traveling output belt 67b is disposed on the rear side of the front traveling output belt 67a. A hydraulic continuously variable transmission 64 can be integrally mounted and fixed on the upper part of the transmission case 63 between the left and right crawler tracks 2 behind the engine 7, and the heavy-duty engine 7 and the transmission case 63 are connected to the center of the left and right width of the body (front and rear of the body). The weight balance in the left-right direction of the aircraft is well formed.

As shown in FIGS. 7 to 11, 13, and 14, a counter shaft 72 for driving the cutting unit 3 and the handling cylinder 21 is provided. A counter shaft 72 is rotatably provided on the upper surface side of the traveling machine body 1 (upper machine frame 1b) via the left bearing body 71a and the right bearing body 71b. A threshing drive pulley 57 on the output shaft 65 protruding leftward from the engine 7 and a counter shaft pulley 58 at the left end of the counter shaft 72 are connected via a threshing drive belt 59. The threshing drive belt 59 is tensioned by the tension roller type work clutch 60, and power is transmitted from the engine 7 to the counter shaft 72.

Further, a counter shaft sprocket 73 is pivotally supported on the right end portion of the counter shaft 72. A countershaft sprocket 73 and a handlebar shaft input sprocket 74 at the right end of the handlebar shaft 20 are connected by a threshing drive chain 75, and the handlebar cylinder 21 is driven via the countershaft 72. Further, a grain delivery sprocket 76 is pivotally supported on the right end of the barrel 20. The grain delivery sprocket 76 and the delivery input sprocket 77 at the right end of the grain takeout conveyor 36 are connected by a delivery drive chain 78, and the grain takeout conveyor 36 is driven via the counter shaft 72. Yes.

In addition, the feed start end side of the grain discharge conveyor 8 is connected to the left end of the grain take-out conveyor 36 via a grain discharge sprocket 79. The grain discharge conveyor 8 has an endless belt-like grain discharge chain 8a and a plurality of grain discharge plates 8b arranged at equal intervals on the grain discharge chain 8a. The grain discharge chain 8a is hung around the grain discharge sprocket 79, the grain extraction conveyor 36 and the grain discharge conveyor 8 are driven in conjunction, and a plurality of grains are extracted from the left end of the grain extraction conveyor 36. It is comprised so that it may convey toward the air path formation duct body 10 by the grain discharge plate body 8b.

On the other hand, the fan drive pulley 82 on the left end of the counter shaft 72 and the blower fan pulley 83 on the fan shaft 34 a of the suction fan device 34 are connected by a fan drive belt 84, and suction and discharge of the handling cylinder 21 and the suction fan device 34 are performed. The dust fan 34b is configured to be driven in conjunction. By operating the work clutch 60 of the work clutch lever 46 disposed on the left side of the control column 41, each part of the threshing part 9 (the handling cylinder 21, each

conveyor

8, 36, and the dust suction / discharge fan 34b) is set at a constant rotational speed. Driving.

Next, the driving structure of the cutting unit 3 will be described with reference to FIGS. 1 to 3, 7, 8, and 11. FIG. A handling shaft output sprocket 85 provided at the left end portion of the handling shaft 20 and a cutting input sprocket 86 provided at the left end portion of the cutting input shaft 18 which is a lifting fulcrum of the cutting portion 3 are connected by a cutting input chain 87. The barrel 21 and the supply conveyor 17 are driven in conjunction with each other via a cutting input shaft 18 that supports the entire cutting unit 3 so as to be movable up and down. In addition, a header drive shaft 91 is provided on the rear surface side of the grain header 12 left side of the cutting unit 3 via a pair of header drive bearing bodies 141. The left end of the cutting input shaft 18 is connected to the right end of the header drive shaft 91 via

header drive sprockets

88 and 89 and a header drive chain 90.

Further, the grain header 12 is provided with a scraping shaft 93 that pivotally supports the scraping auger 13. The left end portion of the header drive shaft 91 is connected to the left end portion of the take-in shaft 93 via a take-in drive chain 92 and take-in

drive sprockets

94 and 95. The scraping auger 13 is driven via the cutting input shaft 18 and the header drive shaft 91.

Further, as shown in FIGS. 1 to 3, the reel support frame 151 base end is fixed to the upper surface of the grain header 12. In addition, a reel shaft 96 that pivotally supports the take-up reel 14 is provided, and the left and right end portions of the reel shaft 96 are pivotally supported at the distal ends of the left and right reel support frames 151. The scraping reel 14 is supported on the upper surface side of the grain header 12 via left and right reel support frames 151. Reel support arms 155 that support the intermediate portions of the left and right reel support frames 151 are provided on the left and right side surfaces of the grain header 12.

Further, a reel drive shaft 153 is provided on the right side surface portion of the grain header 12, the reel drive sprocket 98 and the reel drive pulley 161 are supported on the reel drive shaft 153, and the reel drive sprocket 98 and the reel drive pulley 161 are integrated. It is stuck to. A reel drive chain 97 is wound around a reel input sprocket 99 and a reel drive sprocket 98 provided at the right end of the take-in shaft 93. A reel drive belt 164 is wound around a reel driven pulley 163 and a reel drive pulley 161 provided at the right end of the reel shaft 96.

In addition, a reel drive tension pulley 166 is pivotally supported at the tip of the reel drive tension arm 165 so as to be rotatable. A reel shaft 96 is linked to the header drive shaft 91 via a reel drive chain 97 and a reel drive belt 164. The reel driving shaft 153 supports the base end of the reel driving tension arm 165, the reel driving belt 164 is pressed against the reel driving tension pulley 166 by the reel driving tension spring force, and the reel driving tension pulley 166 causes the reel driving belt to rotate. Supports 164 in tension. In addition, a scraping drive chain 92 is installed in the chain cover body 169 on the left side of the cutting unit 3, and a reel driving belt 164 is installed in the belt cover body 170 on the right side of the cutting unit 3.

Further, a cutting blade 15 is connected to the right end portion of the take-in shaft 93 via a cutting blade drive crank mechanism 100. By the operation of the work clutch lever 46 with the work clutch 60, each part of the cutting unit 3 (the supply conveyor 17, the take-up auger 13, the take-up reel 14, and the cutting blade 15) is driven, and the uncut rice in the field It is configured to continuously cut the tip side of the reed. The cutting blade drive crank mechanism 100 is installed in the cutting blade drive cover body 171 on the right side of the cutting unit 3.

Next, the combine hydraulic circuit structure will be described with reference to FIG. As shown in FIG. 12, the traveling hydraulic pump 30 and the traveling hydraulic motor 31 of the hydraulic continuously variable transmission 64 for traveling speed change are connected by a closed loop hydraulic circuit 211 and a charge pump 212 that supplies hydraulic oil to the closed loop hydraulic circuit 211. Is provided. In addition, an elevating hydraulic circuit 216 having an elevating valve 213 is provided, and a working pump 215 for moving the elevating hydraulic cylinder 4 up and moving the elevating valve 213 by operating the cutting elevating lever 47 is provided. The charge pump 212 and the work pump 215 are configured to be driven in conjunction with the traveling hydraulic pump 30 via the transmission input shaft 66.

With the above configuration, the hydraulic oil in the hydraulic oil tank 55 is pumped to the hydraulic continuously variable transmission 64 or the lifting hydraulic circuit 216 by the charge pump 212 and the work pump 215, and traveled by the traveling hydraulic pump 30. While the hydraulic motor 31 is actuated to output continuously variable speed, the working pump 215 moves up and down the hydraulic cylinder 4 to raise and lower the cutting unit 3. In addition, the hydraulic oil is configured to return to the hydraulic oil tank 55 from the hydraulic continuously variable transmission 64 or the lift hydraulic circuit 216 via the oil cooler 217. The oil cooler 217 is configured to be air-cooled by a cooling cooler fan 218 provided on the intermediate shaft 132 so as to maintain the hydraulic oil in the hydraulic oil tank 55 at a predetermined temperature or lower.

Next, the structure of the traveling machine body 1 will be described with reference to FIGS. 7 to 10, FIG. 13, and FIG. The traveling machine body 1 is configured in a vertical multistage eaves structure by the lower machine body frame 1a, the upper machine body frame 1b, and the support frame 1c. The left and right track frames 50 are fixed to the lower surface side of the lower body frame 1 a via the front support legs 32 and the rear support legs 33, and the left and right crawler belts 2 are mounted via the left and right track frames 50. Further, the lower surface of the engine 7 is connected to the mounting portion on the upper surface of the upper body frame 1b, and the engine 7 is mounted on the upper body frame 1b. The engine 7 is a traveling body 1 between the driving operation unit 5 and the saddle receiving unit 6. Located in the center.

That is, the engine 7 is arranged at the center of the left and right width of the traveling machine body 1, and the driving operation unit 5 is arranged at the rear part of the upper body frame 1 b on the right side of the engine 7 (rear right side of the traveling machine body 1) centering on the engine 7. The saddle receiving portion 6 is disposed at the rear of the upper body frame 1b on the left side of the engine 7 (the rear left side of the traveling body 1), and the battery 56 is disposed on the right upper surface of the upper body frame 1b on which the engine 7 is mounted. It arrange | positions and it is comprised so that the battery 56 may be utilized for the starting power supply of the engine 7, etc.

On the other hand, the front end side of the lower body frame 1a extends forward from the front end side of the upper body frame 1b, and the bottom portion of the threshing portion 9 is placed on the upper surface of the front end side of the lower body frame 1a. The engine 7 is installed on the upper surface of the upper body frame 1b on the rear side of the threshing part 9, and the upper surface height of the threshing part 9 and the height of the upper surface of the engine 7 are made to coincide with each other. An installation surface (upper surface of the lower machine frame 1a) of the threshing portion 9 is formed lower than the upper machine frame 1b (upper surface). A handling port supply plate 9 a is arranged at a low position on the left front part of the threshing unit 9, and a handling port 9 b (cutting grain culm inlet) of the threshing unit 9 is configured at a low position of the traveling machine body 1.

In addition, the lifting hydraulic cylinder 4 is attached to the front end of the lower fuselage frame 1a, and the hydraulic oil tank 55 is disposed between the front end of the upper fuselage frame 1b (the rear surface of the threshing portion 9) and the lower fuselage frame 1a, and the lifting hydraulic pressure is increased. The hydraulic oil such as the cylinder 4 is configured to be stored in the hydraulic oil tank 55.

On the other hand, the rear ends of the lower body frame 1a are connected to the rear ends of the left and right track frames 50 by the left and right rear support legs 33, and the upper ends of the left and right rear support legs 33 are extended toward the rear upper side of the lower body frame 1a. The left and right axle cases 63a on both sides of the transmission case 63 are detachably supported on the upper ends of the left and right rear support legs 33, and the rear end side of the upper fuselage frame 1b is located behind the rear end side of the lower fuselage frame 1a. The upper end side of the transmission case 63 is detachably supported on the rear end side of the upper body frame 1b via the upper connecting body 62. The upper end side of the rear support leg 33 and the upper body frame 1b The mission case 63 is disposed in a backward inclined posture on the rear end side.

The rear end portion of the left and right crawler belts 2 is stretched through the left and right drive sprockets 51 on the left and right axle cases 63a on the lower end side of the mission case 63. That is, the drive sprocket 51 is supported on the upper end side of the rear support leg 33 via the left and right axle cases 63a, and the crawler belt 2 is formed between the tension roller 52 at the front end of the track frame 50 and the drive sprocket 51 on the upper end side of the rear support leg 33. The non-grounding side is stretched, and the non-grounding side of the crawler belt 2 is supported in a front low rear high posture in which the crawler belt 2 is inclined forward and downward.

On the other hand, a mission protection frame 116 for bolting both ends to the right rear end portion and the left axle case 63a of the upper fuselage frame 1b is provided. The mission protection frame 116 surrounds the rear side of the mission case 63, and the mission protection frame. A mission protection cover 117 is attached to 116, and the upper side and the rear side of the hydraulic continuously variable transmission 64 above the mission case 63 are covered with the mission protection cover 117.

The counter shaft 72 is installed in a horizontal posture above the upper body frame 1b at the front of the traveling body 1. Further, a side plate support frame 145 and an engine side plate body 146 are erected on the upper left side of the upper body frame 1b, and the side plate support frame 145 and the engine side plate body 146 are connected and fixed, and the threshing tension arm 147 base side of the side plate support frame 145 is provided. The working clutch 60 is disposed on the tip side of the threshing tension arm 147 extended forward, the threshing driving belt 59 is stretched via the working clutch 60, and the counter shaft 72 is connected to the output shaft 65 of the engine 7. ing.

The fan case 29 of the suction fan device 34 is fixed to the support frame body 39, the suction fan device 34 is disposed on the left side of the engine side plate 146 on the left side of the engine, and the suction fan is provided on the left side of the engine 7 via the engine side plate 146. A device 34 is provided. The suction fan device 34 is configured to suck warm air around the engine 7 through the engine side plate 146.

The travel tension arm 149 on which the travel clutch 68 is supported is supported by the intermediate frame 131, and the threshing drive belt 59, the front travel output belt 67a, the rear travel output belt 67b, and the fan drive belt 84 are disposed. A belt cover body 183 is stretched on the left side of the engine 7. The upper surface wall portion of the belt cover body 183 extends in the front-rear direction along the upper surface side of each of the

belts

59, 67a, 67b, 84.

A threshing drive belt 59 that erects an engine side plate 146 on the front side of the side plate support frame 145 and extends in the front-rear direction on the left side of the engine 7, a front travel output belt 67a, a rear travel output belt 67b, a fan The upper surface side and the left side surface side of each of the drive belts 84 are closed by the left side wall portion and the upper surface wall portion of the engine side plate body 146 and the belt cover body 183, and are covered by the engine side plate body 146 and the belt cover body 183. The outside air in the installation spaces of the

belts

59, 67 a, 67 b and 84 is configured to be supplied to the oil cooler 217 via the cooling cooler fan 218.

With the above-described configuration, the engine side plate 146 and the engine side plate 146 are separated from a place where relatively less dust is present in the opening on the lower surface side of the engine side plate 146 and the belt cover body 183 (near the upper body frame 1b installation portion or the engine 7 placement portion). Outside air is sucked into the space covered by the belt cover body 183, and the outside air inside the space can be supplied to the oil cooler 217 by the cooling cooler fan 218. Therefore, air with relatively little dust such as sawdust can be supplied to the oil cooler 217 as cooling air.

Further, as shown in FIG. 4 to FIG. 6 and the like, a saddle receiving base 38 is disposed at the rear portion of the left crawler belt 2, and the saddle insertion port 19a of the filling hopper 19 is disposed above the saddle receiving base 38, and A bag 37 is attached and the bag 37 is filled with bag. The straw bag 37 filled with straw is dropped onto the field, and empty straw bags 37 are sequentially attached to the straw input port 19a, and are continuously carried out from the grain discharge conveyor 8 through the air duct forming duct body 10. A plurality of koji bags 37 can be filled with koji (grain).

Next, as shown in FIG. 4 to FIG. 7, FIG. 13, FIG. 15, etc., the handling cylinder 21 is provided with four round pipe cylinder frames 21a arranged on the same circumference, and the cylinder frame 21a outside the cylinder frame 21a at equal intervals. It has a large number of V-shaped teeth 21b that are erected in an orientation, and a dust exhaust blade plate 21c that is erected on the outer peripheral surface of the right end of the trunk frame 21a that faces the dust outlet 23. Both end portions of each barrel frame 21a are fixed to the outer periphery of the disc-shaped left and right side plate bodies 21d of the handle barrel 21, and both V-shaped end portions of the handle teeth 21b are fixed to the barrel frame 21a by welding.

In addition, a cross-section end face installed in parallel on the front upper surface side of the traveling machine body 1 in the left-right direction is provided with a front frame body 121 having an inverted V shape (saddle shape) and a cross-section end face having an L-shaped rear frame body 122. A support frame in which a front frame body 121 having an inverted V-shaped cross section (weld shape) is welded and fixed to the front end portion of the lower body frame 1a (running body 1) and the front end portion of the upper body frame 1b is integrally connected. A rear frame 122 having an L-shaped cross-section is welded and fixed to the upper end of the frame 1c (the traveling machine body 1).

The lower end of the left and right threshing mounts 128 are welded and fixed to the front end portion of the lower body frame 1a, and the lower surface of the front frame body 121 is welded and fixed to the upper ends of the left and right threshing mounts 128. A lifting hydraulic cylinder 4 is attached. The threshing mount 128 is formed shorter than the support frame 1c, and the support height of the rear frame body 122 is higher than the support height of the front frame body 121.

A front frame 121 having an inverted V-shaped (∧-shaped) front frame 121 and a front horizontal frame 123 having an inverted V-shaped (∧-shaped) sectional end surface is detachably combined from above. The front horizontal frame body 123 is detachably fastened to the body 121 with a bolt 125, and the rear cross frame end surface is attached to the rear frame body 122 and the rear horizontal frame body 124 is attached to and detached from the upper side. The rear lateral frame body 124 is fastened to the rear frame body 122 with bolts 126.

The reverse V-shaped bottom surface portion (front horizontal cross frame 123) of the threshing portion 9 is fixed to the front frame body 121 whose cross-section end surface is reverse V-shaped, and the rear frame body 122 whose cross-section end surface is L-shaped. The L-shaped rear part (rear horizontal frame body 124) at the rear part of the threshing part 9 is fixed to the front frame body 121 and the rear frame body 122 so that the bottom side of the threshing part 9 is detachable from above. The grain extraction conveyor 36 is disposed on the grain extraction basket 25 at the bottom of the threshing section 9, and the front frame body 121 is joined to the outer surface of the grain extraction basket 25 via the front horizontal frame 123. I support it.

Next, a hydraulic circuit structure in which the hydraulic oil tank 55, the transmission case 63, and the oil cooler 217 are arranged will be described with reference to FIGS. As shown in FIGS. 16 to 19, the cooler case body 412 is fixed to the inner surface of the column frame body 39 via the case bracket body 411, and the oil cooler 217 and the cooling cooler fan 218 are installed in the cooler case body 412. Yes. An oil cooler 217 is attached to a column frame body 39 as a rod support column of the rod receiving unit 6, and an oil cooler 217 and a cooling cooler fan 218 are arranged on the rear side of the engine 7 via the column frame body 39. The oil cooler 217 can be supported with high rigidity using the support frame 39 without specially installing the support member 217.

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

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

Further, as shown in FIGS. 16 to 19, the tank mounting base 421 is integrally fixed to the lower body frame 1a, and the lower part of the hydraulic oil tank 55 is fixed to the tank mounting base 421 via the tank bracket body 422. The upper part of the hydraulic oil tank 55 is fixed to the machine body frame 1b through a standing bracket body 423. The hydraulic oil tank 55 is fastened and fixed to the lower fuselage frame 1a and the upper fuselage frame 1b. Between the lower fuselage frame 1a and the upper fuselage frame 1b that form the traveling aircraft 1 in a multi-stage structure, the upper part of the transmission case 63 The hydraulic oil tank 55 for supplying the hydraulic oil to the hydraulic continuously variable transmission 64 is attached, and the hydraulic oil is placed in a place where the cooling efficiency is good at a position lower than the engine 7 without limiting the size of the hydraulic oil tank 55. A tank 55 is installed.

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

16 to 19, an oiling cap 424 is provided on the upper surface of the hydraulic oil tank 55, and a drain cap 425 is provided on the lower portion of the front surface of the hydraulic oil tank 55. A maintenance work space for the hydraulic oil tank 55 is secured between the threshing unit 9 and the engine 7, and an opening / closing operation of the oiling cap 424 or the drain cap 425 is performed between the threshing unit 9 and the engine 7. The operation of attaching / detaching the hydraulic oil tank 55, the operation of replenishing the hydraulic oil to the hydraulic oil tank 55, or the operation of replacing the hydraulic oil in the hydraulic oil tank 55 can be simplified.

As shown in FIGS. 12 and 16 to 19,

oil filters

431, 432 and the like are built in the hydraulic oil tank 55. Further, the hydraulic continuously variable transmission 64 or the valve block body 214 or the oil cooler 217 in the upper part of the transmission case 63 and the supply

hydraulic pipes

433 and 434 and the return hydraulic pipe 435 that hydraulically connect the hydraulic oil tank 55 in the front part of the traveling machine body 1. 436 and 437 are extended between the lower body frame 1a and the upper body frame 1b. The lower body frame 1a and the upper body frame 1b surround the upper and lower sides of the hydraulic pipes 433 to 437, and the hydraulic oil tank 55 surrounds the front side of the hydraulic pipes 433 to 436 to protect the hydraulic pipes 433 to 437. It is configured.

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

With the above configuration, the hydraulic oil inside the hydraulic oil tank 55 circulates and moves to the oil cooler 217 and is cooled, while a maintenance work space for the hydraulic oil tank 55 is secured between the threshing unit 9 and the engine 7. The pipes 433 to 437 can be connected, and maintenance such as replacement of the

oil filters

431 and 432 can be easily executed. Further, the lifting hydraulic cylinder 4 is connected to the valve block 214 via the lifting hydraulic pipe 438, and the lifting hydraulic cylinder 4 is operated by the switching operation of the lifting valve 213.

As shown in FIG. 1, FIG. 7 to FIG. 12, and FIG. 16 to FIG. 19, a travel provided with a cutting part 3 having a cutting blade 15, a threshing part 9 having a handling cylinder 21, a crawler belt 2 and an engine 7 as a traveling part. Operation of the hydraulic continuously variable transmission 64 in a combine that includes the airframe 1 and a steering column 41 in which a plurality of operation levers 43 to 48 are arranged, and in which a hydraulic continuously variable transmission 64 is provided in a transmission case 63 for driving the crawler belt 2 An oil cooler 217 that cools oil and a cooling cooler fan 218 are provided, and an intermediate shaft 132 is provided in a transmission path between the engine 7 and the hydraulic continuously variable transmission 64, and the intermediate shaft 132 is provided in the lateral direction of the traveling machine body 1. The cooling cooler fan 218 is attached to the intermediate shaft 132. Accordingly, since the mounting position of the intermediate shaft 132 can be easily selected in the vertical and horizontal directions, the mounting position of the cooling cooler fan 218 can be easily determined in correspondence with the oil cooler 217, and the small output mounted on the combine of the small and light structure. The crawler belt 2 drive structure suitable for the engine 7 can be easily configured. For example, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the saddle receiving part 6 are disposed behind the threshing unit 9. A small and light-weight combine can be configured by arranging the rod receiving portion 6 and the steering column 41 in parallel on the left and right rear portions on the rear side.

As shown in FIGS. 7 to 12 and FIGS. 16 to 19, the pulley has 133 and 134 and

belts

67a and 67b for transmitting the power of the engine 7 to the hydraulic continuously variable transmission 64. A cooling cooler fan 218 is provided at the outer end of the intermediate shaft 132 on which the shaft 134 is supported, and an oil cooler 217 is disposed on the outer side of the cooling cooler fan 218. Therefore, the oil cooler 217 can be brought close to the hydraulic continuously variable transmission 64 at the top of the transmission case 63 and can be compactly supported, and air with less dust behind the engine 7 can be supplied to the oil cooler 217 as cooling air.

As shown in FIGS. 7 to 12 and FIGS. 16 to 19, a transmission case 63 is disposed on the traveling machine body 1 behind the engine 7, and an intermediate shaft is provided in the transmission path between the engine 7 and the hydraulic continuously variable transmission 64 of the transmission case 63. 132, the intermediate shaft 132 is extended in the left-right direction of the traveling machine body 1, the cooling cooler fan 218 is attached to the intermediate shaft 132, and the cooling cooler fan 218 is disposed on the opposite side of the control column 41 with the transmission case 63 interposed therebetween. is doing. Therefore, the hydraulic continuously variable transmission 64, the oil cooler 217, and the cooling cooler fan 218 are provided, and a driving unit (crawler belt 2) drive structure with high driving performance can be easily configured, but a small and lightweight combine is easy. Can be configured. The threshing section 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the bowl receiving section 6 can be disposed behind the threshing section 9 and the bowl receiving section is provided on the left and right rear portions on the rear side of the engine 7. 6 and the steering column 41 can be juxtaposed.

As shown in FIGS. 7 to 12 and 16 to 19, the threshing portion 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal posture in the left-right direction, and the engine 7 and the hook receiving portion 6 are arranged behind the threshing portion 9. In addition, in the rear part of the traveling machine body 1, the rod receiving part 6 and the steering column 41 are arranged side by side on the left and right rear parts on the rear side of the engine 7, and the column frame body as the rod supporting column of the rod receiving part 6. An oil cooler 217 is attached to 39, and an oil cooler 217 and a cooling cooler fan 218 are arranged on the rear side of the engine 7 via a support frame body 39. Therefore, the oil cooler 217 can be supported with high rigidity by using the support frame 39 without specially installing a support member for the oil cooler 217, and the number of components attached to the oil cooler 217 can be reduced and the structure can be reduced. .

Next, FIG. 20 to FIG. 21 show modifications of the hydraulic circuit structure shown in FIG. 12 and FIG. 16 to FIG. In the hydraulic circuit structure shown in FIGS. 12 and 16 to 19, the hydraulic oil in the hydraulic oil tank 55 is circulated to the oil cooler 217 via the return hydraulic pipe 436 of the valve block 214 so as to be cooled. It is composed. On the other hand, in the hydraulic circuit structure shown in FIG. 20, the hydraulic oil in the hydraulic oil tank 55 circulates to the oil cooler 217 via the return hydraulic pipe 435 of the hydraulic continuously variable transmission 64 so as to be cooled. It is configured. Further, in the hydraulic circuit structure shown in FIG. 21, the hydraulic oil in the hydraulic oil tank 55 is supplied to the oil cooler through both the return hydraulic pipe 435 of the hydraulic continuously variable transmission 64 and the return hydraulic pipe 436 of the valve block body 214. It is configured to circulate to 217 and be cooled.

As shown in FIG. 1 to FIG. 12 and FIG. 16 to FIG. 19, a cutting unit 3 having a cutting blade 15, a threshing unit 9 having a handling cylinder 21, a traveling machine body 1 provided with a crawler belt 2 and an engine 7 as a traveling unit, A lower body frame 1a that includes a mission case 63 that drives the crawler belt 2 and a hydraulic continuously variable transmission 64, and that supplies the cereal to the threshing section 9 from the reaping section 3 and that forms the traveling body 1 in an upper and lower multistage structure; A hydraulic oil tank 55 for supplying hydraulic oil to the hydraulic continuously variable transmission 64 above the transmission case 63 is attached between the upper body frame 1b. Therefore, without limiting the size of the hydraulic oil tank 55, it is possible to easily secure a place for installing the hydraulic oil tank 55 with good cooling efficiency at a position lower than the engine 7. A traveling part (crawler belt 2) drive structure suitable for a small-power engine 7 mounted on a small and lightweight combine can be easily configured. For example, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal orientation directed in the left-right direction, and the engine 7 and the saddle receiving part 6 are disposed behind the threshing unit 9. A small and light-weight combine can be configured by arranging the rod receiving portion 6 and the steering column 41 in parallel on the left and right rear portions on the rear side.

As shown in FIGS. 4 to 12 and FIGS. 16 to 19, the threshing portion 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation in the left-right direction, and the engine 7 and the hook receiving portion 6 are disposed behind the threshing portion 9. The engine 7 is mounted on the upper surface of the upper fuselage frame 1b, the front end side of the lower fuselage frame 1a is extended forward of the front end side of the upper fuselage frame 1b, and the front end side upper surface of the lower fuselage frame 1a is extended. The threshing unit 9 is placed, and the hydraulic oil tank 55 is disposed below the threshing unit 9 rear side and the engine 7 front side. Therefore, even if the engine 7 is placed close to the rear side of the threshing portion 9 in the horizontal orientation, the large-capacity hydraulic oil tank 55 can be easily supported below the threshing portion 9 and the engine 7. .

As shown in FIGS. 4 to 12 and FIGS. 16 to 19, the transmission case 1 has a structure in which a transmission case 63, a saddle receiving unit 6, and a steering column 41 are arranged in parallel at the rear of the traveling body 1. Hydraulic pipes 433 to 437 that hydraulically connect the machine 64 and the hydraulic oil tank 55 in front of the traveling machine body 1 are extended between the lower machine frame 1a and the upper machine frame 1b. Therefore, the lower body frame 1a and the upper body frame 1b surround the upper and lower sides of the hydraulic pipes 433 to 437, and the hydraulic oil tank 55 surrounds the front side of the hydraulic pipes 433 to 437, so that the hydraulic pipes 433 to 437 can be easily protected. . An installation space for the hydraulic oil tank 55 and the hydraulic pipes 433 to 437 can be secured at a position lower than the engine 7 (on the lower surface side of the upper fuselage frame 1b), and the hydraulic oil tank 55 in front of the engine 7 and the hydraulic continuously variable transmission in the rear of the engine 7 The structure of the hydraulic pipes 433 to 437 to which the machine 64 is connected can be simplified, and the assembly workability of the hydraulic pipes 433 to 437 can be improved.

As shown in FIGS. 4 to 12 and FIGS. 16 to 19, the threshing unit 9 is mounted on the upper surface of the traveling machine body 1 in the horizontal orientation in the left-right direction, the hydraulic oil tank 55 is disposed behind the threshing unit 9, and the lower part The hydraulic oil tank 55 is fastened and fixed to the fuselage frame 1a and the upper fuselage frame 1b, and

oil filters

431, 432 and the like are built in the hydraulic oil tank 55, and an oiling cap 424 is provided on the upper surface of the hydraulic oil tank 55. A drain cap 425 is provided at the lower front of the tank 55. Therefore, a working space related to the hydraulic oil tank 55 can be easily secured between the rear portion of the threshing portion 9 and the front portion of the engine 7. For example, an opening / closing operation of the oil cap 424 or the drain cap 425 can be easily executed. The operation of attaching and detaching the hydraulic oil tank 55, the operation of connecting the hydraulic pipes 433 to 437 or the operation of replenishing the hydraulic oil to the hydraulic oil tank 55 can be simplified, and maintenance such as replacement of the

oil filters

431 and 432 can be easily performed. .

As shown in FIGS. 4 to 12 and FIGS. 16 to 19, a mission case 63 is disposed at the rear of the traveling machine body 1 and a threshing portion 9 is mounted on the upper surface of the traveling machine body 1 in a horizontal posture in the left-right direction. The engine 7 and the saddle receiving portion 6 are arranged behind the portion 9, and the saddle receiving portion 6 and the steering column 41 are arranged side by side on the left and right rear portions on the rear side of the engine 7. An intermediate shaft 132 is provided in the transmission path therebetween, and an oil cooler 217 and a cooling cooler fan 218 for cooling the hydraulic oil of the hydraulic continuously variable transmission 64 are installed in the vicinity of the intermediate shaft 132. Therefore, the hydraulic continuously variable transmission 64, the oil cooler 217, and the cooling cooler fan 218 are provided, and a driving unit (crawler belt 2) drive structure with high driving performance can be easily configured, but a small and lightweight combine is easy. Can be configured.

Next, FIGS. 22 to 28 show modifications of the traveling drive structure shown in FIGS. 22 to 28, a reverse rotation case 441 is provided on the transmission path between the engine 7 and the hydraulic continuously variable transmission 64, and the reverse rotation case 441 is erected on the traveling machine body 1 through the intermediate frame 131. A reverse rotation input shaft 132 a and a reverse rotation output shaft 132 b are provided in the reverse rotation case 441 as intermediate shafts extending in the left-right direction of the traveling machine body 1. The reverse rotation input shaft 132 a and the reverse rotation output shaft 132 b are interlocked via the reverse rotation gear group 442. A cooling cooler fan 218 is attached to the left end portion of the reverse rotation output shaft 132 b that protrudes outward from the machine, and the hydraulic oil circulated to the oil cooler 217 is cooled by the cooling cooler fan 218.

Further, a transmission path between the engine 7 and the transmission case 63 is formed by the front traveling output belt 67a and the rear traveling output belt 67b, and extends in the front-rear direction with respect to the front traveling output belt 67a that extends in the front-rear direction. The rear traveling output belt 67b to be shifted is shifted toward the center of the machine body, the left intermediate pulley 133 that supports the rear end of the front traveling output belt 67a, and the right intermediate pulley that supports the front end of the rear traveling output belt 67b. 134 is disposed in a reverse rotation case 441 that is erected on the traveling machine body 1. By adjusting the mounting position of the reverse rotation case 441, the mounting positions of the

intermediate pulleys

133 and 134 can be selected in the vertical and horizontal directions.

22 to 28, a reverse rotation case 441 is provided in the transmission path between the engine 7 and the hydraulic continuously variable transmission 64, the reverse rotation case 441 is erected on the traveling machine body 1, and the traveling aircraft body 1 extends in the left-right direction. The reverse rotation input shaft 132a and the reverse rotation output shaft 132b as intermediate shafts to be provided are provided in the reverse rotation case 441, and the cooling cooler fan 218 is attached to the reverse rotation output shaft 132b. Therefore, according to the specifications of the hydraulic continuously variable transmission 64 By simply installing the reverse rotation case 441, the engine 7 or the transmission case 63 can be shared, and the hydraulic continuously variable transmission 64 having different specifications can be easily mounted. A traveling part (crawler belt 2) drive structure suitable for the desired traveling performance can be easily configured.

As shown in FIGS. 22 to 28, a transmission path between the engine 7 and the transmission case 63 is formed by the front traveling output belt 67a and the rear traveling output belt 67b, and is extended with respect to the front traveling output belt 67a extending in the front-rear direction. The rear traveling output belt 67b extending in the front-rear direction is shifted toward the center of the machine body, and the left intermediate pulley 133 that supports the rear end portion of the front traveling output belt 67a and the front end of the rear traveling output belt 67b Since the right intermediate pulley 134 that supports the portion is disposed in the reverse rotation case 441 that is erected on the traveling machine body 1, the attachment positions of the

intermediate pulleys

133 and 134 can be easily selected in the vertical and horizontal directions. For example, while the engine 7 can be arranged at a high center position of the traveling machine body 1, the mission case 63 can be arranged at a lower right position of the traveling machine body 1, and the front-rear width or the left-right width of the engine 7 and the transmission case 63 installation portion can be configured compactly it can. In other words, the drive structure of each part of the combine is simplified, and it is possible to easily achieve downsizing of the entire combine. it can.

Next, FIGS. 29 to 35 show modifications of the configuration and support of the hydraulic oil tank shown in FIGS. In FIG. 29 to FIG. 35, the same reference numerals are given to the portions that perform the same functions as in the above embodiment. As shown in FIGS. 29 to 35, a hydraulic oil tank 555 is disposed between the front end portion of the upper body frame 1b (the rear surface of the threshing section 9) and the lower body frame 1a. A tank mounting base 421 is integrally fixed to the lower body frame 1 a, and a lower part of the hydraulic oil tank 555 is fixed to the tank mounting base 421 through a lower tank bracket body 556.

An upper tank mounting base 557 for connecting middle portions of a pair of left and right prop frames (vertical machine body frames) 1c and 1c that connect the front part of the lower machine frame 1a and the front end of the upper machine frame 1b is provided. The upper tank mounting base 557 has a substantially C-shaped end surface cross section. Both ends of the upper tank mounting base 557 are connected to the mutually opposing side surfaces of the pair of left and right column frames 1c and 1c at a position near the upper body frame 1b between the lower body frame 1a and the upper body frame 1b. A front upper portion of the hydraulic oil tank 555 is fixed to the upper tank mounting base 557 via an upper tank bracket body 558.

The hydraulic oil tank 555 is fastened and fixed to the lower fuselage frame 1a and the support frame 1c, and is attached between the lower fuselage frame 1a, the upper fuselage frame 1b, and the support frame 1c that form the traveling aircraft 1 in a multistage structure. An oil cap 424 is provided on the upper surface of the hydraulic oil tank 555, and a drain cap 425 is provided at the center of the lower surface of the hydraulic oil tank 555. The hydraulic oil tank 555 of this embodiment is disposed at the same position as the hydraulic oil tank 55 described with reference to FIGS. Therefore, in this embodiment, the operation and effect similar to the operation and effect related to the arrangement of the hydraulic oil tank 55 in the above embodiment can be obtained with respect to the arrangement of the hydraulic oil tank 555.

As shown in FIGS. 32 to 35, the hydraulic oil tank 555 includes a first hydraulic oil supply port 559 that is hydraulically connected to the hydraulic continuously variable transmission 64, and a lifting hydraulic cylinder 4 that moves the cutting unit 3 up and down. The second hydraulic oil supply ports 560 that are hydraulically connected are distributed on the front and rear side surfaces of the hydraulic oil tank 555. Referring to FIGS. 12, 20, and 21, the first hydraulic oil supply port 559 is hydraulically connected to the charge pump 212 of the hydraulic continuously variable transmission 64 via the supply hydraulic pipe 433. The second hydraulic oil supply port 560 is hydraulically connected to the lifting hydraulic cylinder 4 via the supply hydraulic piping 434, the work pump 215, the lifting valve 213, and the lifting hydraulic piping 438. The hydraulic circuit configuration in this embodiment is the same as the configuration shown in FIG. 20, but it goes without saying that the configuration can be changed to the same configuration as in FIG. 12 or FIG.

The first hydraulic oil supply port 559 that is hydraulically connected to the hydraulic continuously variable transmission 64 disposed on the rear side of the hydraulic oil tank 555 is disposed on the rear side surface of the hydraulic oil tank 555. The second hydraulic oil supply port 560 that is hydraulically connected to the lifting hydraulic cylinder 4 that is disposed on the front side of the hydraulic oil tank 555 is disposed on the front side surface of the hydraulic oil tank 555. That is, among the side surfaces of the hydraulic oil tank 555, the first hydraulic oil supply port 559 is provided on the rear side surface facing the hydraulic continuously variable transmission 64 that is the hydraulic connection target, and the second hydraulic oil supply port 560 is the hydraulic connection target. It is provided in the front side surface which opposes the raising / lowering hydraulic cylinder 4 which is. As described above, the arrangement of the hydraulic

oil supply ports

559 and 560 is configured to easily identify which of the hydraulic

oil supply ports

559 and 560 is connected to the supply

hydraulic pipes

433 and 434, and the hydraulic oil supply port 559. , 560 can be prevented from being erroneously connected.

As shown in FIGS. 29 to 35, a pair of

oil filter units

561 and 562 are attached to the hydraulic oil tank 555 in a distributed manner on the front and rear sides of the hydraulic oil tank 555. The

oil filter units

561 and 562 include a flange member 563 in which a hydraulic

oil supply port

559 or 560 is disposed and is detachably attached to a side surface of the hydraulic oil tank 555, and an

oil filter

431 or 432 disposed in the hydraulic oil tank 555. It has. In this embodiment, the

oil filter units

561 and 562 have the same configuration, and the

oil filter

431 or 432 is attached to the

filter fixing members

564, 565, 566 and the flange member 563 where the hydraulic

oil supply port

559 or 560 is disposed. The structure is fixed by a spring member 567.

The flange member 563 has a substantially disk shape having a through hole at the center, and the hydraulic

oil supply port

559 or 560 is fixed to the through hole. The hydraulic

oil supply ports

559 and 560 are disposed so as to protrude from one surface of the flange member 563. The

filter fixing members

564 and 565 have a substantially C-shaped cross-section end surface, and one end is fixedly provided on the surface of the flange member 563 opposite to the operation

oil supply port

559 or 560 and is disposed in a projecting manner. The

filter fixing members

564 and 565 are opposed to each other in the vertical direction with the central portion of the flange member 563 sandwiched so that the recesses face each other. In the

oil filter units

561 and 562, the substantially

cylindrical oil filters

431 and 432 are disposed between the two

filter fixing members

564 and 565.

The filter fixing member 566 has a cross-sectional end surface that is convex, and is fixed to the tip end portions of the

filter fixing members

564 and 565 by two filter fixing bolts 568 with the inner surface concave portion facing the flange member 563 side. A spring member 567 composed of a compression coil spring is disposed between the filter fixing member 566 and the

oil filters

431 and 432. The

oil filters

431 and 432 are pressed against the flange member 563 by the restoring force of the spring member 567.

The

oil filter units

561 and 562 are detachably attached to the rear side or front side of the hydraulic oil tank 555 by three oil filter unit fixing bolts 569, respectively. When the

oil filters

431 and 432 are replaced, an operation of removing the

oil filter units

561 and 562 from the hydraulic oil tank 555 is performed. In this embodiment, as shown in FIG. 29, both

oil filter units

561 and 562 are detachably attached to the hydraulic oil tank 555 at a position higher than the crawler belt 2 constituting the traveling portion. Therefore, the operator can easily access and remove the

oil filter units

561 and 562 from the side of the traveling machine body 1 such that the

oil filter units

561 and 562 can be accessed from the side of the traveling machine body 1 through the crawler belt 2. This can be done and the maintainability is improved.

32 to 35, the oil filter unit 561 is attached to the lower right portion of the rear side surface of the hydraulic oil tank 555. The oil filter unit 562 is attached to a lower left portion of the front side surface of the hydraulic oil tank 555. Within the hydraulic oil tank 555, the

oil filter units

561 and 562 are arranged so that the

step portions

566a and 566a (see FIG. 33) of the two

filter fixing members

566 and 566 having convex end faces are fitted to each other. A portion of the hydraulic oil tank 555 overlaps in the direction and is arranged near the bottom of the hydraulic oil tank 555. Further, both

flange members

563 and 563 of the

oil filter units

561 and 562 are partially overlapped in the front-rear direction. In this manner, the

oil filter units

561 and 562 are compactly arranged in the hydraulic oil tank 555, and the two

oil filters

431 and 432 are arranged in the hydraulic oil tank 555 at the same height position. The oil tank 555 can be configured compactly.

Further, as shown in FIGS. 29 to 35, hydraulic

oil return ports

570 and 571 are arranged side by side at the same height position near the upper part of the rear side surface of the hydraulic oil tank 555. One end of a return hydraulic pipe 437 is connected to the hydraulic oil return port 570, and the hydraulic oil return port 570 is hydraulically connected to the hydraulic continuously variable transmission 64 via the return hydraulic pipe 437, the oil cooler 217, and the return hydraulic pipe 435. . One end of a return hydraulic pipe 436 is connected to the hydraulic oil return port 571, and the hydraulic oil return port 571 is hydraulically connected to the valve block body 214 via the return hydraulic pipe 436.

As shown in FIGS. 32 to 35, inside the hydraulic oil tank 555, hydraulic oil

splash prevention plates

572, 573 and a hydraulic oil diffusion plate 574 are arranged. The hydraulic oil splash preventing plate 572 protrudes from the rear side inner wall of the hydraulic oil tank 555 toward the front side. The hydraulic oil splash prevention plate 573 and the hydraulic oil diffusion plate 574 protrude from the front side inner wall of the hydraulic oil tank 555 toward the rear side. The hydraulic oil

splash prevention plates

572 and 573 are arranged at the same height position, and are arranged at a height position higher than the hydraulic

oil return ports

570 and 571. The hydraulic oil diffusion plate 574 is disposed at a lower height than the hydraulic

oil return ports

570 and 571. Further, an oil level confirmation cap for confirming the oil level in the hydraulic oil tank 555 at a height position higher than the hydraulic oil

splash prevention plates

572 and 573 is located near the upper part of the rear side surface of the hydraulic oil tank 555. 575 is arranged.

The hydraulic oil splash preventing plate 572 is formed of a member having an L-shaped cross section, and the hydraulic oil splash preventing plate 573 and the hydraulic oil diffusion plate 574 are formed of a single member having an approximately U-shaped cross sectional end surface. The hydraulic oil

splash prevention plates

572 and 573 prevent the hydraulic oil returned from the hydraulic

oil return ports

570 and 571 into the hydraulic oil tank 555 from jumping to the upper surface side of the hydraulic oil tank 555 in the hydraulic oil tank 555. The hydraulic oil diffusion plate 574 has a function of diffusing the hydraulic oil returned from the hydraulic

oil return ports

570 and 571 into the hydraulic oil tank 555 in the left-right direction.

As shown in FIGS. 29 to 31, the supply

hydraulic pipes

433 and 434 and the return

hydraulic pipes

436 and 437 are extended between the lower machine frame 1a, the upper machine frame 1b, and the support frame 1c. The lower body frame 1a, the upper body frame 1b, and the support frame 1c surround the

hydraulic pipes

433, 434, 436, and 437 so as to protect these hydraulic pipes. The supply hydraulic pipe 434 is connected to the second hydraulic oil supply port 560 on the front side of the hydraulic oil tank 555 through the upper side of the hydraulic oil tank 555 from the rear side, but at a lower position than the column frame 1c. Since it passes, it is protected by the support frame 1c, the engine 7, the threshing portion 9 and the like (see FIGS. 1 to 6).

In this embodiment, as shown in FIGS. 29 to 33, the hydraulic oil tank 555 is supported by a lower body frame 1a and a support frame 1c (vertical body frame) that connects the lower body frame 1a and the upper body frame 1b. Therefore, the hydraulic oil tank 555 can be firmly supported by the lower body frame 1a and the column frame 1c constituting the traveling body 1, and the lower body frame 1a, the upper body frame 1b and the column frame are supported. The hydraulic oil tank 555 can be disposed in the space surrounded by 1c, and the safety can be improved by preventing the hydraulic oil tank 555 from falling off or being damaged by a foreign object collision.

Further, in this embodiment, the first hydraulic oil supply port 559 hydraulically connected to the hydraulic continuously variable transmission 64 and the second hydraulic oil supply port hydraulically connected to the lifting hydraulic cylinder 4 that moves the cutting unit 3 up and down. 560 is arranged so as to be distributed on the front and rear side surfaces of the hydraulic oil tank 555, so that the supply hydraulic pipe 433 connected to the hydraulic continuously variable transmission 64 and the supply connected to the elevating hydraulic cylinder 4 are provided. The hydraulic pipe 434 can be distributed to the front and rear sides of the hydraulic oil tank 555 and connected to the hydraulic oil tank 555, and either of the two supply

hydraulic pipes

433 and 434 can be accessed from the front and rear of the hydraulic oil tank 555. Maintenance performance such as attaching and removing work of 433 and 434 is improved.

Further, this embodiment includes a flange member 563 in which the hydraulic

oil supply port

559 or 560 is disposed and detachably attached to the side surface of the hydraulic oil tank 555, and an

oil filter

431 or 432 disposed in the hydraulic oil tank 555. Since the provided pair of

oil filter units

561 and 562 are distributed and attached to the front and rear side surfaces of the hydraulic oil tank 555, the two

oil filter units

561 and 562 from the front and rear of the hydraulic oil tank 555 Since either of them can be accessed, the maintainability such as installation and removal of the

oil filter units

561 and 562 is improved. Further, since the pair of

oil filter units

561 and 562 are arranged in the hydraulic oil tank 555 partially overlapping in the front-rear direction and the left-right direction, both the

oil filter units

561 and 562 can be arranged at the same height. However, the arrangement area of the two

oil filter units

561 and 562 can be reduced in plan view, and the hydraulic oil tank 555 can be made compact. Further, since both the

oil filter units

561 and 562 are mounted on the hydraulic oil tank 555 at a position higher than the crawler belt 2 constituting the traveling unit, the

oil filter units

561 and 562 are attached to and detached from the side of the traveling machine body 1. The maintenance can be easily performed.

1 traveling machine 1a lower body frame 1b upper body frame 1c prop frame (vertical body frame)
2 crawler belt (running part)
3 Cutting part 6 Receiving part 7 Engine 9 Threshing part 15 Cutting blade 21 Handling cylinder 41 Control column 55 Hydraulic oil tank 63 Transmission case 64 Hydraulic continuously variable transmission 132 Intermediate shaft 217 Oil cooler 218 Cooling cooler fan 424 Lubrication cap 425 Drain cap 431 Oil filter 432 Oil filter 433 Supply hydraulic piping 434 Supply hydraulic piping 435 Return hydraulic piping 436 Return hydraulic piping 437 Return hydraulic piping 555 Hydraulic oil tank 559 First hydraulic oil supply port 560 Second hydraulic oil supply port 561 Oil filter unit 562 Oil Filter unit 563 Flange member

Claims

A reaping part having a cutting blade, a threshing part having a handling cylinder, a traveling machine body provided with a traveling part and an engine, a transmission case and a hydraulic continuously variable transmission for driving the traveling part, and the threshing part from the reaping part Combines that supply cereals to
A hydraulic oil tank for supplying hydraulic oil to the hydraulic continuously variable transmission at the upper part of the transmission case is attached between a lower machine frame and an upper machine frame that form the traveling machine body in an upper and lower multistage structure. Combine.
The threshing unit is mounted on the upper surface of the traveling machine body in a horizontal orientation directed in the left-right direction, and the engine and the hooking part are disposed behind the threshing part, and the engine is mounted on the upper surface of the upper machine body frame. In addition, the lower body frame front end side extends forward from the upper body frame front end side, the threshing part is placed on the front end side upper surface of the lower body frame, and between the threshing part rear side and the engine front side The combine according to claim 1, wherein the hydraulic oil tank is disposed below.
A hydraulic pipe that hydraulically connects a hydraulic continuously variable transmission at the top of the transmission case and a hydraulic oil tank at the front of the traveling machine body, wherein a transmission case, a saddle receiving part, and a steering column are arranged in parallel at the rear part of the traveling machine body. The combine according to claim 1, wherein the combine is extended between the lower body frame and the upper body frame.
The threshing unit is mounted on the upper surface of the traveling machine body in a horizontal orientation directed in the left-right direction, the hydraulic oil tank is disposed behind the threshing part, and the hydraulic oil tank is fastened and fixed to the lower machine frame and the upper machine frame. The hydraulic oil tank or the like is built in the hydraulic oil tank, an oil cap is provided on the upper surface of the hydraulic oil tank, and a drain cap is provided on the lower front surface of the hydraulic oil tank. Combine.
A mission case is arranged at the rear part of the traveling machine body, the threshing part is mounted on the upper surface of the traveling machine body in a lateral orientation directed in the left-right direction, an engine and a guard part are arranged behind the threshing part, and the rear side of the engine A structure in which a saddle receiving portion and a steering column are provided side by side on the left and right rear sides, and an intermediate shaft is provided in a transmission path between the engine and the hydraulic continuously variable transmission to cool the hydraulic oil of the hydraulic continuously variable transmission The combine according to claim 1, wherein an oil cooler and a cooling fan are installed in the vicinity of the intermediate shaft.
The combine according to claim 1, wherein the hydraulic oil tank is supported by the lower machine frame, and a vertical machine frame that connects the lower machine frame and the upper machine frame.
A first hydraulic oil supply port that is hydraulically connected to the hydraulic continuously variable transmission, and a second hydraulic oil supply port that is hydraulically connected to an elevating hydraulic cylinder that moves the mowing unit up and down are front and rear side surfaces of the hydraulic oil tank. The combine according to claim 1, wherein the combine is arranged.
A pair of oil filter units including a flange member in which the first or second hydraulic oil supply port is disposed and detachably attached to a side surface of the hydraulic oil tank, and an oil filter disposed in the hydraulic oil tank. The combine according to claim 7, wherein the combiner is distributed and mounted on the front and rear side surfaces of the hydraulic oil tank, and is arranged in a partially overlapping manner in the front and rear direction and the left and right direction in the hydraulic oil tank.