JP2018171022A - Harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly conduct take out of gravity discharge in a harvester capable of taking out threshed grains in a threshed grain tank by either gravity discharge or power discharge.SOLUTION: A threshed grain tank 13 includes a first discharge port 20 which is arranged at a position being a lower side when the threshed grain tank 13 is in an ascending posture, and a second discharge port 18 capable of discharging threshed grains by a discharge screw 17. The threshed grain tank 13 can be switched between a first discharge mode for discharging the threshed grains through the first discharge port 20 and a second discharge mode for discharging the threshed grains through the second discharge port 18. At the bottom of the threshed grain tank 13, there is provided a flow down guiding surface A for guiding the threshed grains from a part being a higher side when the threshed grain tank 13 is in the first discharge mode and the threshed grain tank 13 is in the ascending posture toward the first discharge port 20. The discharge screw 17 is arranged at a position offset from the flow down guiding surface A.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a harvester provided with a threshing device for threshing a harvested product harvested by a harvesting unit and a threshing tank for storing threshing obtained by the threshing device.

  In the harvesting machine described above, the threshing tank is provided with a threshing tank that can swing up and down between a descending posture and an ascending posture around a horizontally swinging shaft core, and having a discharge screw inside the threshing tank. The threshing tank is equipped with a first discharge port provided on the lower part of the threshing tank when the threshing tank is in the rising position, and the threshing by driving the threshing discharge device A second discharge port that enables discharge, and the threshing tank is stored in the cerealing tank, and a first discharge form that discharges the cereal stored in the threshing tank from the first outlet. There is one that can be switched to a second discharge mode in which threshing is discharged from the second discharge port.

  This harvesting machine can raise the threshing tank, discharge the cereal stored in the cerealing tank from the first outlet by gravity, and take the cereal from the cerealing tank by gravity discharge. Further, the threshing discharge device is driven, the cereals stored in the cereal removal tank are discharged by the cereal removal device, and the cereal removal can be taken out from the cereal removal tank by power discharge.

Conventionally, for example, there is a combine shown in Patent Document 1 as this type of harvester. In the combine shown by patent document 1, the grain tank is provided so that it can rock | fluctuate up and down around the raising-lowering axis center over the raising discharge attitude | position and the descent | falling storage attitude | position. A grain outlet, a grain outlet and a recessed part are provided at the bottom of the grain tank. A discharge screw is rotatably provided in the recessed portion, a vertical screw conveyor is connected to the discharge screw, and a horizontal screw conveyor is connected to the vertical screw conveyor.
When the grain tank is raised to the ascending discharge posture and the discharge screw is stopped, the threshing grains in the grain tank flow down to the grain outlet and are discharged from the grain outlet. When the grain tank is raised to the rising discharge posture and the discharge screw is driven, the threshing grains in the grain tank are discharged from the grain delivery outlet by the discharge screw, and the threshed grains discharged from the grain delivery outlet are It is conveyed to the horizontal screw conveyor by the vertical screw conveyor and discharged from the horizontal screw conveyor.

JP, 2006-178870, A

  When the conventional technique is adopted, when the cereal from the threshing tank is taken out by gravity discharge, the cereal may flow into the discharge screw, and the discharge screw may become a flow resistance, and the cereal may not easily flow out.

  The present invention provides a harvesting machine that can smoothly remove cereals stored in a threshing tank by gravity discharge and can be removed by gravity discharge.

The harvester according to the invention is
A threshing device for threshing the harvested product harvested by the harvesting unit;
Storing the threshing obtained by the threshing device, and a threshing tank capable of swinging up and down between a descending posture and an ascending posture around a horizontal swing axis;
A threshing discharge device having a discharge screw inside the threshing tank,
A first discharge port provided in a portion of the threshing tank which is on a lower side when the threshing tank is in the ascending posture, and a threshing by driving the threshing discharge device. A second outlet for allowing discharge, and
The threshing tank discharges the cereal stored in the threshing tank from the first outlet, and discharges the cereal stored in the cerealing tank from the second outlet. It can be switched to the second discharge form,
When the threshing tank is in the first discharge mode, the threshing is guided to the bottom of the threshing tank from the portion on the higher side when the threshing tank is in the raised position to the first discharge port. The flow guide surface is configured such that the discharge screw is positioned away from the flow guide surface.

  According to this configuration, when the threshing discharge device is driven, the cereal in the threshing tank is discharged from the second discharge port by the discharge screw, so that the threshing can be taken out from the threshing tank by the threshing discharge device. . When the threshing tank is raised, the first outlet is located on the lower side of the threshing tank, and the threshing in the threshing tank is discharged from the first outlet by gravity. Can be removed from the threshing tank. In the case of this gravity removal, threshing is guided to flow down to the first discharge port by the flow guide surface from which the discharge screw is removed, so that the discharge screw does not become flow resistance.

  Therefore, while the threshing of the threshing tank can be taken out by either gravity discharge or power discharge, it can be smoothly taken out without being subjected to flow resistance by the discharge screw.

  In the present invention, the threshing tank can be switched between a flow guide state that covers the region where the discharge screw is disposed and constitutes the flow guide surface and a screw guide state that opens the region. A cover is provided, and the cover is preferably in the flow-down guide state when the threshing tank is in the first discharge configuration, and in the screw guide state when the threshing tank is in the second discharge configuration. It is.

  According to this configuration, since the discharge screw can be prevented from flowing resistance with a simple structure that covers the area where the discharge screw is disposed with a cover, it is possible to reduce the cost of threshing smoothly by gravity discharge. can get.

  In the present invention, the bottom portion is formed with a recessed portion recessed toward the bottom of the threshing tank, the discharge screw is disposed in the recessed portion, and the cover in the flow-down guide state is It is preferable to cover the recessed portion.

  According to this configuration, the shape of the cover can be made simple, such as a flat shape, compared to the cover that directly covers the discharge screw. It can be made to flow down.

  In the present invention, it is preferable that the cover in the screw guide state partially opens the recessed portion.

  According to this configuration, the recessed portion is partially opened, so that a large amount of cereals do not flow into the recessed portion at a stretch. Compared with the large amount of threshing flowing in at once, the threshing bridge phenomenon does not occur above the discharge screw, and the threshing clogging does not occur.

  In the present invention, the swing axis is set at a position closer to a lower side when the threshing tank is in the ascending posture, and the first discharge port is a side wall portion of the threshing tank. The threshing tank is provided on a lower side wall portion located on a lower side when the threshing tank is in the ascending posture, and the discharge screw is in a state where the rotation axis of the discharge screw coincides with the swing axis It is preferable that it is provided.

According to this configuration, since the discharge screw can be positioned at a lower side portion when the threshing tank is in the rising posture, the discharge portion connected to the discharge screw of the threshing discharge device is the base end portion. The threshing can be discharged to the outside of the fuselage without making the length of the projecting outside from the fuselage too long.
Further, when the threshing tank swings up and down, the discharge part connected to the discharge screw of the threshing discharge device may be configured to rotate relative to the cereal removal tank about the rotation axis of the discharge screw. Well, the rotation shaft core of the discharge screw and the swing axis of the threshing tank are different, and the structure of the threshing discharge device can be simplified compared to the one where the discharge section needs to be configured to move with the threshing tank. .

  In the present invention, a closed posture for closing the first discharge port facing the first discharge port, a downward swing from the closed posture to open the first discharge port, and a shed of grain removal A chute is provided that can swing up and down between a use posture that becomes a possible state, and on the guide surface of the chute, a swaying body for raising the cereal grain that is guided to flow down to the center side is erected, A notch portion is formed in a portion of the cover that is located on the first discharge port side when the cover is in the flow guide state, the cover is in the flow guide state, and the chute is closed When the posture is reached, it is preferable that the marginal body is located within the range of the notch portion in a top view of the threshing tank.

  According to this configuration, the threshing discharged from the first discharge port is guided to flow down by the chute, and the threshing that flows down the chute is guided to flow and flow toward the center side in the width direction of the chute by the marginal body. Therefore, threshing can be made to flow down to the collection point with high accuracy. Even if the discharge screw is provided closer to the first discharge port side, when the cover is swung between the flow guide state and the screw guide state, the chute is in a closed position and the marginal body is placed inside the cereal removal tank. Even if it enters, the notch can avoid the cover from hitting the chute.

  Accordingly, while the threshing can flow down to the collection point with high accuracy, the interval between the discharge screw and the first discharge port can be narrowed, and when the cereal is discharged by the discharge screw, it is blocked by the chute. It is difficult for cereal to stay in the vicinity of the first outlet.

  In the present invention, the cover is swingable between the flow guide state and the screw guide state, and when the cover is in the flow guide state, the cover is continuous with the bottom plate of the threshing tank. It is preferable that the flow guide surface is configured.

  According to this configuration, the state change between the flow guide state and the screw guide state of the cover can be smoothly performed by swinging.

  In the present invention, the cover is slidable between the flow guide state and the screw guide state, and is continuous with the bottom plate of the threshing tank when the cover is in the flow guide state. It is preferable to constitute the flow guide surface.

  According to this configuration, the threshing that flows down from the bottom plate easily gets on the cover in the flow guide state, so that the threshing can smoothly flow down to the flow guide surface.

  In the present invention, it is preferable that the cover in the screw guide state is positioned higher than the discharge screw when the threshing tank is in the raised posture.

  According to this structure, the threshing which is guided to the discharge screw by the cover in the screw guide state flows into the discharge screw vigorously due to the drop between the cover and the discharge screw, and the discharge screw is hardly clogged.

  In the present invention, the cover in the screw guided state overlaps with a bottom plate of the threshing tank and is adjacent to the cover in the screw guided state on the opposite side to the discharge screw in the bottom plate of the threshing tank. It is preferable that a slope portion that guides the threshing that has flowed down when the threshing tank is in the raised position to the upper part of the cover in the screw-guided state is provided at a matching position.

  According to this configuration, the threshing that flows down toward the cover from the upper side of the flow direction than the cover in the screw guide state gets on the cover under the guidance of the slope portion, and is located on the hand side that improves the flow downward than the cover. Do not flow into. Accordingly, it is possible to prevent the cereal from entering between the bottom plate and the cover or being caught on the free end side of the cover.

It is a right view which shows the whole combine. It is a top view which shows the whole combine. It is a rear view which shows the threshing tank of a raise discharge attitude | position, and the cover of a flow guide state. It is a rear view which shows the cover of a flow guide state. It is a rear view which shows the threshing tank of a raise discharge attitude | position, and the cover of a screw guide state. It is a rear view which shows the cover of a screw guide state. It is a right view of a grain tank. It is a tank top view which shows the cover of a flow guide state, and the chute | shoot of a use attitude | position. It is a tank top view which shows the cover of a screw guide state, and the chute | shoot of a closed attitude | position. It is a top view which shows the lock mechanism of a locked state. It is a rear view showing a linkage mechanism and a chute in a closed posture. It is a rear view which shows the chute | shoot of a linkage mechanism and a use attitude | position. It is a rear view which shows the lock mechanism of a locked state. It is a rear view which shows the lock mechanism of a lock release state. It is a top view which shows the cover of a flow-down guide state, and the approaching body of a chute | shoot. It is a right view which shows the support structure of a threshing discharge apparatus. It is a front view which shows the support structure of a threshing discharge apparatus. It is a top view which shows the support structure of a threshing discharge apparatus. It is a rear view which shows a holding | maintenance part. It is a vertical side view which shows the support structure of a holding | maintenance part. It is a top view which shows an operation part. It is a right side surface which shows the operating device mounting part in the mounting state of a remote control device. It is XXIII-XXIII cross-sectional arrow view of FIG. It is explanatory drawing which shows the visible range by a rear-view mirror in the traveling body right view. It is explanatory drawing which shows the viewable range by a rear-view mirror in a traveling machine body planar view. It is a right view which shows a 3rd discharge port. It is explanatory drawing which shows the threshing grain discharge | emission point by a 3rd discharge port. It is a longitudinal cross-sectional view which shows a 3rd discharge port and an exterior cover. It is a rear view which shows the screw guide state of a cover provided with another implementation structure. It is a rear view which shows the flow-down guide state of a cover provided with another implementation structure. It is a schematic rear view which shows the threshing tank provided with another implementation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a right side view showing an entire combine as an example of a harvesting machine. FIG. 2 is a plan view showing the entire combine. The direction [F] shown in FIGS. 1 and 2 is defined as the forward direction of the traveling machine body 1 and the direction [B] is defined as the backward direction of the traveling machine body 1. 1, the direction of [R] shown in FIG. 2 is the right direction of the traveling vehicle body 1, the direction of the back side of the paper surface of FIG. 1, and the direction of [L] shown in FIG. Define.

[Combine overall configuration]
Combine harvesting is for harvesting grains such as rice, wheat and soybeans. The combine includes a traveling machine body 1 equipped with a pair of left and right front wheels 2 and a pair of left and right rear wheels 3 as a traveling device. The front wheels 2 are equipped so as to be driven by power from the engine 4. The rear wheel 3 is equipped with a steering operation by a power steering device (not shown). A riding-type driving unit 5 is formed at the front of the traveling machine body 1. The operation unit 5 is covered with a cabin 6. A harvesting conveyance unit 8 is provided at the front of the machine body frame 7. The harvesting conveyance unit 8 includes a conveyance device 9 and a harvesting unit 10. The transfer device 9 extends from the body frame 7 so as to be able to swing up and down in the forward direction. The harvesting unit 10 is connected to the extended end of the transport device 9. The harvesting unit 10 is lifted and lowered between a lowering work state that is lowered near the ground and a rising non-working state that is raised to a higher position from the ground by the swinging and lifting operation of the transport device 9 by the lifting cylinder 11. . A threshing device 12 and a threshing tank 13 (hereinafter abbreviated as a tank 13) are provided at the rear part of the machine body frame 7.

  The harvesting operation can be performed by lowering the harvesting unit 10 to the lowering work state and running the traveling machine 1 in this state. That is, in the harvesting unit 10, the planted grain culm stock located in front of the traveling machine body 1 is cut, and the harvested corn straw as a crop is harvested. The harvested cereal meal is conveyed backward by the conveying device 9 and supplied to the threshing device 12. In the threshing device 12, the harvested cereal meal is threshed by the handling cylinder 12b (see FIG. 3), and threshing grains as threshing are obtained. The threshed grains are conveyed to the tank 13 and stored by the cerealing device 12c (see FIG. 2).

[Configuration of threshing tank 13]
As shown in FIGS. 1 and 2, the tank 13 is provided above the threshing device 12. The threshing device 12 is placed on the body frame 7 in a state of being biased to the left side of the traveling body with respect to the center of the traveling body 1 in the lateral width direction, and is supported by the body frame 7 in a fixed state.

  As shown in FIGS. 3 and 4, a first discharge port 20 is provided in the right lateral wall portion 13 </ b> S of the tank 13. The first discharge port 20 opens toward the right side of the traveling machine body.

  As shown in FIGS. 3, 4, 5, and 6, a recessed portion 15 is formed in the right bottom portion 14 located on the right lateral end side in the traveling body lateral width direction among the bottom portion of the tank 13. The recessed portion 15 is recessed toward the lower side of the tank 13. A discharge screw 17 is rotatably disposed in the recessed portion 15. As shown in FIG. 7, a second discharge port 18 is provided at the front portion of the tank 13 and a connection case 19 is connected. The inside of the connection case 19 and the recessed portion 15 communicate with each other via the second discharge port 18. The front end portion of the discharge screw 17 enters the inside of the connection case 19 through the second discharge port 18 and is rotatably supported in the connection case 19. The connection case 19 and the tank 13 are coupled so as to be relatively rotatable about the axis of the rotation support shaft 17a of the discharge screw 17 as a rotation center. A hanging wall 13 </ b> K is provided inside the tank 13. The flow rate of the threshing grain is regulated by the drooping wall 13K so that a large amount of threshing grain does not flow down to the first outlet 20 and the recessed portion 15 at a stretch.

As shown in FIGS. 3, 4, 5 and 6, a cover 21 is provided inside the tank 13. As shown in FIG. 8, a reinforcing plate portion 22 and a plurality of reinforcing ribs 23 are attached to the surface side of the cover 21. The plurality of reinforcing ribs 23 are arranged at intervals in the longitudinal direction of the cover 21. Cover support shafts 24 are provided at both front and rear ends of the cover 21. The cover 21 is supported by the front wall portion 13F and the rear wall portion 13R of the tank 13 via front and rear cover support shafts 24. As shown in FIGS. 8, 9, and 10, a switching arm 25 is interlocked and connected to an end of the rear cover support shaft 24 that protrudes to the rear outer side of the tank 13. The switching arm 25 is supported by a portion on the rear side of the fuselage in the outer peripheral portion of the tank 13 via a cover support shaft 24.
In the present embodiment, the switching arm 25 is supported by a part on the rear side of the fuselage in the outer peripheral part of the tank 13, but as a part for supporting the switching arm 25, Any part such as an outer part or a part on the front side of the aircraft may be adopted. When the switching arm 25 is swung with the axis X of the cover support shaft 24 as a swing fulcrum, the cover support shaft 24 is rotated, and the cover 21 is in the flow guide state with the shaft core X as the swing fulcrum. And the screw guide state.

  As shown in FIGS. 4 and 14, the cover 21 is switched to the flow-down guide state by operating the switching arm 25 as the selection unit to the first discharge position D1. As shown in FIGS. 4 and 8, when the cover 21 is switched to the flow-down guide state, the opening 15a of the recessed portion 15 is closed by the cover. That is, the recessed portion 15 as a region where the discharge screw 17 is disposed is covered by the cover 21, and threshing grains cannot flow into the discharge screw 17. Thereby, the tank 13 is switched to the 1st discharge | emission form which discharges | emits the threshing grain stored in the tank 13 from the 1st discharge port 20, when the cover 21 is switched to a flow-down guide state.

  As shown in FIG. 4, when the cover 21 is switched to the flow-down guide state, the flow-down guide surface portion A <b> 1 is formed on the back side of the cover 21 above the discharge screw 17. When the cover 21 is in the flow-down guide state, the cover 21 is continuous with the bottom plate 16, and the flow-down guide surface portion A1 is located on the upper side of the grain flow direction with respect to the opening 15a of the bottom plate 16, and the bottom plate. 16 is formed in a state of being smoothly connected to a portion located on the lower side of the grain flow direction with respect to the opening 15a.

  As shown in FIGS. 6 and 13, when the switching arm 25 is operated to the second discharge position D2, the cover 21 is switched to the screw guide state. As shown in FIGS. 6 and 9, when the cover 21 is switched to the screw guide state, the cover 21 opens the recessed portion 15 as an area where the discharge screw 17 is arranged, and the threshing grains to the discharge screw 17 are opened. Inflow becomes possible. Thereby, the tank 13 is switched to the 2nd discharge form which discharges | emits the threshing grain stored in the tank 13 from the 2nd discharge port 18, by the cover 21 being switched to a screw guide state.

  When the cover 21 opens the recessed portion 15, an opening 15 a of the recessed portion 15 that is narrower than the planar view area of the recessed portion 15 is opened by the cover 21. That is, the cover 21 partially opens the recessed portion 15. Thereby, a large amount of threshing grains do not flow into the recessed portion 15 at a stretch, and the occurrence of the threshing grain bridging phenomenon can be prevented.

  As shown in FIGS. 6 and 9, when the screw 21 is in the screw guide state, the cover 21 is positioned so as to overlap with a portion of the bottom plate 16 that is positioned on the side closer to the grain flow lowering hand with respect to the opening 15a. In the bottom plate 16, a slope portion 29 is formed at a location adjacent to the cover 21 in the screw guide state on the side opposite to the discharge screw 17. The threshing grains that flow down from the flow-down improving hand side with respect to the cover 21 in the screw guide state are guided by the slope portion 29 so as to flow down above the cover 21. The threshing grains are prevented from entering between the free end side of the cover 21 in the screw guide state and the bottom plate 16 or being caught on the free end side of the cover 21 by the guidance of the slope portion 29. Reference numeral 13 b shown in FIGS. 4, 6 and 9 denotes a bottom frame of the tank 13.

  The connection case 19 is supported by the connection frame 26 a of the support structure 26. The rear end portion of the rotation spindle 17 a of the discharge screw 17 is rotatably supported by the support column portion 26 b of the support structure 26. The support structure 26 includes a plurality of support frames 26 c supported by the machine frame 7 and a connection frame 26 a that connects the upper ends of the support frames 26 c and is fixed to the machine frame 7. The tank 13 is supported by the support structure 26 via the rotation support shaft 17 a and the connection case 19. An elevating cylinder 27 as an elevating actuator is connected to the lower part of the tank 13 and the support frame 26c. The tank 13 has a storage posture as a descending posture and an ascending posture around a swing axis P in a lateral direction (horizontal or substantially horizontal direction) along the front-rear direction of the traveling machine body 1 by extending and contracting the lifting cylinder 27. Is lifted up and down. The swing axis P is an axis that coincides with the rotation axis of the discharge screw 17 and is located at a position closer to the lower side when the tank 13 is in the upward discharge posture.

  When the tank 13 is switched to the descending storage posture, the left end side of the tank 13 descends near the upper portion of the threshing device 12, and the tank 13 is in an attachment posture in which the left and right sides of the bottom plate 16 are the same or substantially the same height. Can store threshing grains.

  When the tank 13 is switched to the ascending discharge posture, the left end side of the tank 13 rises, the tank 13 is in an inclined mounting posture that is positioned upward toward the left end side, and the first discharge port 20 is located on the lower side of the tank 13. To position. When the tank 13 is in the first discharge form, when the tank 13 is switched to the ascending discharge posture, the flow-down guide surface that guides the threshing grains from the portion on the higher side of the tank 13 to the first discharge port 20 at the bottom of the tank 13. A is constituted by the flow guide surface part A1 and the bottom plate 16. When the flow-down guide surface A is configured, the area of the discharge screw 17 is covered with the cover 21, and the discharge screw 17 is located at a position away from the flow-down guide surface A.

  As shown in FIG. 5, when the tank 13 is in the upward discharge posture, the screw-guided cover 21 is positioned higher than the discharge screw 17. The threshing grains that flow down to the discharge screw 17 by the cover 21 flow into the discharge screw 17 with a drop between the cover 21 and the discharge screw 17.

  As shown in FIGS. 10, 13, and 14, a detection switch 28 for detecting the discharge form is provided near the switching arm 25. The detection switch 28 is supported by the tank 13. A switch operating portion 25 a is formed on the switching arm 25. As shown in FIG. 13, when the switching arm 25 is switched to the second discharge position D2, the swing detection unit 28a of the detection switch 28 is pressed by the switch operation unit 25a, and the swing detection unit 28a is moved to the second detection position. And the detection switch 28 enters the detection state of the second discharge form. As shown in FIG. 14, when the switching arm 25 is switched to the first discharge position D1, the pressing operation of the swing detection unit 28a by the switch operation unit 25a is released, and the swing detection unit 28a is restored to the restoring force of the detection switch 28. Swings to the first detection position, and the detection switch 28 enters the detection state of the first discharge form.

  As shown in FIG. 7, the lower part of the vertical conveyance unit 31 is connected to the discharge screw 17 via the connection case 19, and the base of the horizontal conveyance unit 32 is connected to the upper end of the vertical conveyance unit 31. The cereal discharge apparatus 30 is configured by the transport unit 31 and the lateral transport unit 32.

  The connection case 19 is connected to the tank 13 and faces the longitudinal direction 19a of the traveling machine body 1 and faces the longitudinal direction of the traveling machine body 1 and rises from the end of the traveling machine body longitudinal direction part 19a opposite to the tank side and travels. The vehicle body 1 is provided with a traveling body up-and-down part 19b facing the up-and-down direction of the body 1, and is L-shaped in a side view of the body. The vertical conveyance unit 31 rises from the traveling machine body vertical portion 19 b of the connection case 19 and extends along the traveling machine body vertical direction. The horizontal conveyance unit 32 extends in the horizontal direction (horizontal or substantially horizontal direction) from the upper end of the vertical conveyance unit 31. The vertical conveyance unit 31 and the horizontal conveyance unit 32 are configured by a screw conveyor. The discharge screw 17, the vertical conveyance unit 31, and the horizontal conveyance unit 32 are driven by power transmitted from the motor 35 to the connection case 19 via the transmission case 33. The motor 35 is configured by a hydraulic motor. An electric motor can be used as the motor 35.

  A swivel cylinder 34 as a swivel actuator is interlocked and connected to the vertical conveyance unit 31. The cereal discharge apparatus 30 is swiveled between a discharge attitude and a retracted attitude with the axis Y of the vertical transport unit 31 as the center of rotation by the expansion and contraction operation of the rotation cylinder 34.

  As shown by a two-dot chain line in FIG. 2, when the threshing and discharging apparatus 30 is turned to the discharging posture, the horizontal conveying portion 32 becomes a discharging posture M that protrudes from the vertical conveying portion 31 to the right lateral outside of the traveling machine body 1. . As shown by the solid line in FIG. 2, when the threshing and discharging apparatus 30 is turned to the retracted position, the lateral conveyance unit 32 is stored in the laterally inner side of the traveling machine body 1 and is positioned above the tank 13 in the descending storage position. The stored posture N is obtained. In the present embodiment, a posture along the front-rear direction of the traveling machine body 1 is adopted as the storage posture N of the lateral conveyance unit 32, but an attitude inclined with respect to the front-rear direction of the traveling machine body 1 may be adopted. .

  As shown in FIGS. 11 and 12, a chute 36 is provided on the right side of the tank 13. The proximal end side of the chute 36 is supported by the lower part of the tank 13 via the support shaft 37. As shown in FIG. 7, on the front and rear sides of the chute 36, a bending / extending link 38 is provided across the free end side of the chute 36 and the tank 13, and the free end side of the chute 36 is supported by the tank 13 via the bending / extending link 38. It is like that. As shown in FIG. 13, the bending / extending link 38 includes a tank side link 38a and a chute side link 38b. The tank side link 38a is swingably supported by the tank 13 via a fulcrum shaft 39. The chute link 38b is connected across the free end of the tank link 38a and the free end of the chute 36. The chute side link 38b and the tank side link 38a are connected so as to be relatively rotatable. An end on the chute side of the chute link 38b is slidably inserted into a support groove 36a of the chute 36 and is relatively rotatable.

  As shown in FIGS. 11 and 12, the chute 36 is used and closed in a manner that the bending / extension link 38 is folded and extended, with the axis Z extending in the longitudinal direction of the traveling body of the support shaft 37 as a swing fulcrum. It is lifted up and down.

  As shown in FIG. 3, when the chute 36 is in a use posture, the chute 36 is attached in a state of projecting from the tank 13 toward the outside on the right lateral outside of the traveling machine body 1, and threshing discharged from the first discharge port 20. The particles are guided to flow downward toward the right lateral outer side of the traveling machine body 1 by the guide surface 36 c of the chute 36.

  As shown in FIG. 5, when the chute 36 is operated to the closed posture, the chute 36 is in the mounting posture facing the first discharge port 20, and the first discharge port 20 is blocked by the chute 36. The chute 36 includes a side wall portion 36b that rises from the front and rear end portions of the chute 36 toward the guide surface 36c. When the chute 36 is in the closed position, the front side wall portion 36b is positioned on the front outer side of the tank 13 along with the tank 13 in the front-rear direction, and the rear side wall portion 36b is connected to the tank 13 on the rear outer side of the tank 13. Located side by side in the front-rear direction.

  As shown in FIGS. 11 and 12, a linkage mechanism 40 is provided across the tank 13 and the chute 36. As shown in FIG. 12, when the posture of the tank 13 is changed to the upward discharge posture, the chute 36 is changed to the use posture by the linkage mechanism 40 in association with the posture change. As shown in FIG. 11, when the posture of the tank 13 is changed to the lowered storage posture, the posture is linked and the chute 36 is changed to the closed posture by the linkage mechanism 40. The linkage mechanism 40 is configured as follows.

  The linkage mechanism 40 includes a bending / extending link 38 connected to the rear side of the chute 36 and an operation cable 41. The operation cable 41 includes an outer cable 42 and an inner cable 43. The inner cable 43 is slidably passed through the outer cable 42.

  As shown in FIGS. 11 and 12, the chute side end of the outer cable 42 is supported in a fixed state on the tank 13 via an outer support member 44. The chute-side end portion of the inner cable 43 is connected to the cable connecting portion 38 c of the bending / extending link 38 via a spring 45. The cable connecting portion 38 c is provided on the fulcrum shaft 39 so as not to rotate relative to the fulcrum shaft 39, and is linked to the tank side link 38 a via the fulcrum shaft 39. The tank side end of the outer cable 42 is supported by the support member 47 via the outer support member 46. The support member 47 is supported by the connection frame 26 a of the support structure 26. The tank side end of the outer cable 42 is fixed to the support structure 26 via the outer support member 46 and the support member 47. The tank side end of the inner cable 43 is supported by a bracket 49 via an inner support member 48. The bracket 49 is fixed to the lower part of the tank 13. The tank side end of the inner cable 43 is connected to the tank 13 via an inner support member 48 and a bracket 49. Three places in the middle of the operation cable 41 are supported by the cable guide 50. The three cable guides 50 are supported by the tank 13.

  As shown in FIGS. 11 and 12, as the tank 13 rises from the lowered storage posture, the tank side end of the inner cable 43 is moved in a direction approaching the outer support member 46, and the inner cable 43 is loosened. Is done. As the inner cable 43 is loosened, the bending / extending link 38 is operated to the extension side by the weight of the chute 36, and the chute 36 is lowered. When the tank 13 is in the ascending and discharging posture, the bending / extending link 38 is in an extended state, and the chute 36 is in the usage posture and is supported by being suspended in the usage posture by the bending / extension link 38.

  As shown in FIGS. 11 and 12, as the tank 13 descends from the ascending / discharging posture, the tank side end of the inner cable 43 is moved away from the outer support member 46, and the inner cable 43 is pulled. Is done. As the inner cable 43 is pulled, the tank side link 38a is pulled up by the pulling force of the inner cable 43, the bending / extending link 38 is operated to the folding side, and the chute 36 is pulled up. When the tank 13 is in the lowered storage posture, the bending link 38 is in a folded state, the chute 36 is in the closed posture, and is held in the closed posture by the pulling force of the inner cable 43.

[Configuration of lock mechanism LK]
As shown in FIGS. 10, 13, and 14, the first locking portion 25b and the second locking portion 38e constitute a lock mechanism LK. The lock mechanism LK maintains the chute 36 in the closed position when the second discharge form is selected by the switching arm 25, and does not maintain the chute 36 in the closed position when the first discharge form is selected by the switching arm 25. It is a thing. Specifically, it is configured as follows.

  The first locking portion 25 b is provided at the free end portion of the switching arm 25 and is interlocked with the switching arm 25. An extension link portion 38d is provided on the tank side link 38a. The second locking portion 38e is provided at the free end portion of the extension link portion 38d and interlocks with the chute 36.

  As shown in FIGS. 9, 10, and 13, when the chute 36 is in the closed position, when the switching arm 25 is switched to the second discharge position D2 (when the second discharge mode is selected), The one locking portion 25b is locked to the second locking portion 38e, and the lock mechanism LK is locked. When the lock mechanism LK is in the locked state, the extension and contraction link 38 is prevented from extending by the locking of the first locking portion 25b to the second locking portion 38e. Thereby, even if the tank 13 is raised to the raised discharge posture and the inner cable 43 is loosened, the chute 36 is maintained in the closed posture by the lock mechanism LK.

  As shown in FIGS. 8 and 14, when the switching arm 25 is switched to the first discharge position D <b> 1 when the chute 36 is in the raised storage posture (when the first discharge mode is selected), the first The locking part 25b is disengaged from the second locking part 38e, and the lock mechanism LK enters the unlocked state. When the lock mechanism LK is in the unlocked state, the first locking portion 25b is disengaged from the second locking portion 38e, so that the extension / contraction link 38 is allowed to extend. As a result, when the tank 13 is raised to the raised discharge posture and the inner cable 43 is loosened, the chute 36 is switched to the use posture. In the present embodiment, the tank side link 38a is a locking symmetrical member of the lock mechanism LK, but the chute side link 38b may be a locking symmetrical member. 11 and 12, for the sake of easy viewing, for example, the extension link portion 38d, the switching arm 25, etc. are indicated by two-dot chain lines for convenience. It is what.

[Removal of cereal]
When the threshing grains stored in the tank 13 are taken out by the threshing discharge device 30, the switching arm 25 is switched to the second discharge position D2 before the harvesting operation is started (before the threshing grains are stored in the tank 13). deep. When the threshing grains are stored in the tank 13, the threshing discharge device 30 is switched to the discharge posture and the tank 13 is raised to the rising discharge posture to drive the threshing discharge device 30. Then, the cover 21 is switched to the screw guide state, and the tank 13 is in the second discharge form. The threshing grains stored in the tank 13 flow into the discharge screw 17 and are discharged by the discharge screw 17. It is discharged from the outlet 18. The thresh grains discharged from the second discharge port 18 are taken out from the connection case 19 by the vertical transfer unit 31, sent to the horizontal transfer unit 32, and discharged from the discharge port 32 a of the horizontal transfer unit 32. Thereby, the threshing grains stored in the tank 13 can be taken out to the lateral outer side of the traveling machine body 1 by the power discharging by the threshing discharging device 30. At this time, the lock mechanism LK is in the locked state by switching the switching arm 25 as the selection unit to the second discharge position D2, and the chute 36 is moved by the lock mechanism LK even if the tank 13 is raised to the upward discharge posture. The first discharge port 20 remains blocked by the chute 36 while maintaining the closed posture.

  When taking out the threshing grains stored in the tank 13 from the first discharge port 20, the switching arm 25 is switched to the first discharging position D1 before the harvesting operation is started (before the threshing grains are stored in the tank 13). deep. When threshing grains are stored in the tank 13, the tank 13 is raised to the ascending discharge posture. Then, the cover 21 is in the flow-down guide state, the tank 13 is in the first discharge form, and the flow-down guide surface A is configured at the bottom of the tank 13, so that the threshing grains in the tank are caused by the flow-down guide surface A. The first discharge port 20 is guided to flow down and is discharged from the first discharge port 20. Since the discharge screw 17 is disengaged from the flow down guide surface A, the threshing grains are smoothly discharged from the first discharge port 20 without being subjected to flow resistance by the discharge screw 17. When the switching arm 25 is switched to the first discharge position D1, the lock mechanism LK is in the unlocked state, and when the tank 13 is raised to the lifted discharge posture, the chute 36 is switched to the use posture. The threshing grains discharged from the outlet 20 are guided down by the chute 36. Thereby, the threshing grains stored in the tank 13 can be taken out laterally outward of the traveling machine body 1 by weight discharge.

  As shown in FIG. 8, a notch 21 a is formed in a portion of the cover 21 that is located on the first discharge port 20 side when the cover 21 is in the flow-down guide state. The notches 21a are formed on both ends of the cover 21 in the front-rear direction of the tank. In the bottom plate 16, a tank-side margin 51 is provided above a portion corresponding to the notch 21 a when the cover 21 is in the flow-down guide state. Of the guide surface 36c of the chute 36, a chute side marginal body 52 is provided at both ends in the longitudinal direction of the traveling machine body. The threshing grains flowing in the tank toward the first discharge port 20 are guided to flow down by the tank-side margin 51 so as to flow toward the center side of the first discharge port 20. Thereby, the threshing grains discharged from the first discharge port 20 to the chute 36 are discharged between the chute side framing bodies 52. The threshing grains discharged to the chute 36 are flowed down and guided by the narrowing body 52 so as to flow down to the center side of the chute 36, and discharged from a portion near the center of the discharge port 36d of the chute 36.

  As shown in FIG. 15, when the cover 21 is in the flow-down guide state and the chute 36 is in the closed position, the chute side marginal body 52 is within the range of the notch 21 c in the top view of the tank 13. To position. When the cover 21 swings between the flow-down guide state and the screw guide state, even if the chute 36 is in the closed position and the chute-side width member 52 enters the tank 13, the cover 21 is covered by the notch 21c. 21 does not hit the marginal body 52.

  As shown in FIG. 10, the base portion of the tank side 51 is connected to the front wall portion 13 </ b> F or the rear wall portion 13 </ b> R of the tank 13. The margin body 51 extends from the front wall portion 13F or the rear wall portion 13R and swings about a connecting shaft core G extending in a direction along the tank vertical direction. When the threshing grains are discharged from the first outlet 20, the tank-side occupant 51 is pressed by the threshing grains that flow down toward the first outlet 20. As a result, the tank-side filling body 51 is in a use posture in which the free end side of the filling body 51 is supported by contacting the stopper 53. As shown in FIG. 9, when the chute 36 is in the closed position, the chute side guard 52 enters the inside of the tank 13, and the tank side guard 51 is pressed by the chute side guard 52. Thus, the tank side 51 is in a retracted posture in which the free end side is moved to the inside of the tank 13 as compared with the use posture.

[Support structure of threshing discharge device 30]
As shown in FIG. 17, the arrangement relationship between the threshing discharge device 30 and the threshing device 12 is such that when the threshing discharge device 30 is in the discharge posture, the threshing device 12 is laterally transferred to the vertical transfer unit 31. This is an arrangement relationship located on the opposite side to the side where the discharge port 32a is located.

  As shown in FIGS. 16 and 18, a support frame body 55 extending along the vertical direction of the traveling machine body 1 is provided between the tank 13 and the vertical conveyance unit 31. The support frame body 55 is provided in a state along the vertical conveyance unit 31. The vertical conveyance unit 31 is supported by the support frame body 55 and is maintained in the vertical posture against the load of the horizontal conveyance unit 32 and the like. Specifically, the configuration is as follows.

  As shown in FIGS. 16 and 18, a connecting portion 55 a is formed in the lower portion of the support frame body 55. The connecting portion 55a is fastened and connected to the traveling machine body front-rear facing part 19a and the traveling machine body up-down part 19b of the connection case 19 by a connecting bolt. The lower portion of the support frame body 55 is supported across the traveling machine body front-rear facing part 19a and the traveling machine body up-down part 19b.

  As shown in FIGS. 16, 17, and 18, the support frame body 55 is provided with a vertical frame 55c whose lower part is supported by the connection case 19, and an extending part 55b provided on the upper part of the vertical frame 55c. ing. The extending part 55b extends from the upper part of the vertical frame 55c to a position located on the opposite side with respect to the vertical conveying part 31. The holding member 56 is supported by the extending portion 55b. The holding member 56 includes a base portion 56a connected to the extending portion 55b, and a band portion 56b whose both ends are connected to the base portion 56a by connecting bolts. The holding member 56 rotatably holds the transport cylinder 31a of the vertical transport unit 31 by the support part 56c of the base part 56a and the band part 56b. An intermediate portion of the vertical conveying unit 31 is supported on the upper portion of the vertical frame 55c via the holding member 56 and the extending portion 55b. In the present embodiment, a configuration in which the intermediate portion of the vertical conveyance unit 31 is supported by the holding member 56 is adopted, but the tip portion close to the horizontal conveyance unit 32 of the vertical conveyance unit 31 is supported by the holding member 56. A configuration may be adopted.

  As shown in FIG. 17, the extending part 55 b and the barrel driving part 12 a of the threshing device 12 are connected by a connecting frame 57. The support frame body 55 and the threshing device 12 are connected by the connection frame 57, and the support frame body 55 is pulled and supported by the threshing device 12 through the connection frame 57. In the present embodiment, the connecting frame 57 is connected to the barrel driving unit 12a, but a configuration in which the connecting frame 57 is connected to the body of the threshing device 12 may be adopted. In the present embodiment, the support frame body 55 is connected to the connection frame 57 at the extending portion 55b, but may be configured to be connected to the connection frame 57 at the vertical frame 55c. The connection frame 57 includes a divided connection frame 57a on the support frame body 55 side and a divided vertical frame 57b on the threshing apparatus 12 side. A cylinder case 58 is supported at an intermediate portion of the connecting frame 57, and an end portion of the revolving cylinder 34 on the opposite side to the vertical conveyance portion side is supported by the cylinder case 58. A front end portion of the cylinder case 58 is supported by the support structure 26 via a support frame 59. An intermediate portion of the connection frame 57 is supported by the support structure 26 via a cylinder case 58 and a support frame 59.

[Configuration of Holding Unit 60]
As shown in FIGS. 1 and 2, when the threshing and discharging apparatus 30 is turned to the retracted position, a portion on the discharge port 32 a side in the horizontal conveyance unit 32 is held by the holding unit 60, and the horizontal conveyance unit 32 is the horizontal conveyance unit 32. The storage posture N is positioned. The holding unit 60 is configured as follows.

  As shown in FIG. 20, the holding unit 60 includes a holding frame 61. A seat 62 is formed in the lower part of the holding frame 61. The seat portion 62 is fastened and connected to the tank 13 by a connecting bolt, and the holding portion 60 is supported by the tank 13.

  The seat 62 is fastened and connected to a first support 63 and a second support 64 set at the upper part of the tank 13 by a connecting bolt. The holding part 60 is supported across the first support part 63 and the second support part 64.

  The first support portion 63 includes a rear wall portion 13 </ b> R as a wall portion on the opposite side to the side where the vertical conveyance portion 31 of the tank 13 is located, and a top plate portion 13 </ b> T of the tank 13. The upper corner portion UK is set. The tank upper corner portion UK includes a rear wall portion 13R, a top plate portion 13T, and a right lateral wall portion 13S as a wall portion that intersects the rear wall portion 13R and the top plate portion 13T. A tank upper corner portion CK located at the corner and a first overlapping portion K1 located on the rear left end side of the tank 13 with respect to the tank upper corner portion CK at the rear right corner are provided. The first overlapping portion K1 is a portion where the folded portion 13a formed on the upper end portion of the rear wall portion 13R and the top plate portion 13T are connected in an overlapped state. The overlap of the folded portion 13a and the top plate portion 13T is an overlap where the folded portion 13a is located on the back side of the top plate portion 13T. The turn-up portion 13a and the top plate portion 13T are connected by a connecting bolt that fastens the seat portion 62, the turn-up portion 13a, and the top plate portion 13T together.

  The second support portion 64 is located in front of the traveling machine body from the first support portion 63. The second support portion 64 is configured by a second overlapping portion K2 where the top plate portion 13T and the reinforcing member 65 overlap. The reinforcing member 65 is provided inside the tank 13 and reinforces the top plate portion 13T. The top plate portion 13T and the reinforcing member 65 are connected by a connecting bolt that fastens the seat portion 62, the top plate portion 13T, and the reinforcing member 65 together.

  The holding portion 60 has high rigidity due to the intersection of the rear wall portion 13R, the top plate portion 13T, and the right lateral wall portion 13S in the upper portion of the tank 13 due to the overlap between the folded portion 13a and the top plate portion 13T. The portion is supported over a portion having high rigidity by overlapping the top plate portion 13T and the reinforcing member 65.

  As shown in FIG. 20, the holding unit 60 includes a storage area S that corresponds to the storage posture of the horizontal conveyance unit 32 and has an entrance 67 and a guide unit 72 that guides the horizontal conveyance unit 32 to the storage area S. ing.

  The guide portion 72 is provided with a lower guide member 70 located below the accommodation area S and an upper guide member 71 located above the accommodation area S. The lower guide member 70 is configured to be inclined upward toward the accommodation area S. The guide action part 70a of the lower guide member 70 is made of a resin member, and makes the lateral conveyance part 32 easy to slide. The upper guide member 71 is configured by an elastic member.

  The accommodation area S is formed by the terminal portion 66 of the lower guide member 70, the lateral support member 68 located on the opposite side of the entrance area 67 of the accommodation area S, and the upper support member 69 located on the accommodation area S. Has been. The support action portion 68a of the lateral support member 68 and the support action portion 69a of the upper support member 69 are made of a cushion material.

  In the holding unit 60, the horizontal conveyance unit 32 that has turned from the discharge posture M to the storage posture N is received by the lower guide member 70, and the lower guide member 70 guides the horizontal conveyance unit 32 to the bottom, thereby performing horizontal conveyance. The portion 32 moves while being guided toward the accommodation area S by the lower guide member 70 and upward on the accommodation area side. As the horizontal conveying portion 32 moves on the lower guide member 70, it is received by the upper guide member 71 and the upper guide member 71 guides the upper portion of the horizontal conveying portion 32 so that the upper guide member 71 is laterally conveyed. It is pushed up by the section 32, elastically deformed, and allowed to move toward the accommodation area S of the lateral conveyance section 32. When the lateral transport unit 32 is in the retracted posture N, the lateral transport unit 32 is supported by the terminal end 66, the lateral support member 68, and the upper support member 69 and is held in the accommodation area S.

  When the lateral conveyance unit 32 is accommodated in the accommodation area S, the upper guide member 71 returns to the original state by the elastic restoring force. The lateral conveyance unit 32 located in the accommodation area S is suppressed from the upper side toward the accommodation area S by the upper guide member 71, and the lateral conveyance part 32 is held in the accommodation area S.

  When the horizontal conveyance unit 32 pivots from the storage posture N to the discharge posture M, the horizontal conveyance unit 32 pushes up the upper guide member 71, and the upper guide member 71 is elastically deformed to allow passage of the horizontal conveyance unit 32. The horizontal conveyance part 32 goes out of the storage area S.

[Configuration for Detecting Rotation Position of Vertical Transport Unit 31]
As shown in FIGS. 16 and 18, a sensor support member 73 is provided on the vertical frame 55 c, and the sensor 74 is supported on the sensor support member 73. The sensor 74 is supported by the support frame body 55. A cam member as a detection symmetrical member 75 of the sensor 74 is provided on the outer peripheral portion of the transport cylinder 31 a in the vertical transport section 31. A swingable detection portion 74 a of the sensor 74 faces the peripheral portion of the detection symmetry member 75. When the cereal removal apparatus 30 is turned, the detection symmetric member 75 rotates together with the transport cylinder 31a, and the detection unit 74a is swung by the detection symmetric member 75. The sensor 74 detects the swing position of the detection unit 74 a as the rotation position of the vertical conveyance unit 31. In the present embodiment, the sensor support member 73 is provided. However, a configuration in which the sensor support member 73 is not provided and the sensor 74 is directly supported by the support frame body 55 may be employed.

[Composition of operation part 5]
As shown in FIG. 21, the driving unit 5 is provided with a driving seat 80, a side driving panel 81, a steering wheel 82, a control box 83, and a remote control device 84. The side operation panel 81 is provided on the right side of the driver seat 80. In the present embodiment, the side operation panel 81 is provided on the right side of the driver seat 80, but may be provided on the driver seat 80 on the left side.

  The side operation panel 81 is driven with a speed change lever 85 that changes the driving speed of the front wheel 2, a lifting lever 86 that moves the harvesting unit 10 up and down, a harvesting clutch lever 87 that drives and stops the harvesting unit 10, and a threshing device 12. A threshing clutch lever 88 for stopping operation is also provided.

  The remote operation device 84 includes a turning switch operated by the first operation button 89 and the second operation button 90, a discharge switch and an elevation switch operated by the third operation button 91. The first operation button 89, the second operation button 90, and the third operation button 91 are disposed on the operation surface 84a of the remote operation device 84. The turn switch, the discharge switch, and the lift switch are linked to the control device 93 via the communication cable 92. The control device 93 is accommodated in the control box 83.

  When the first operation button 89 and the second operation button 90 are operated, an electrical signal as a turning command is transmitted from the turning switch to the control device 93, and the control device 93 is operated based on the turning command to turn the turning cylinder 34. Is controlled by the control device 93. Thereby, the threshing discharge apparatus 30 is turned in the turning direction corresponding to the turning command. When the first operation button 89 is operated, the threshing / discharging device 30 is turned toward the discharging posture. When the second operation button 90 is operated, the threshing and discharging apparatus 30 is turned toward the retracted posture.

  When the discharge switch is operated by the third operation button 91, an electric signal as a motor command is transmitted from the discharge switch to the control device 93, the control device 93 operates based on the motor command, and the motor 35 is controlled by the control device 93. Controlled by. As a result, the motor 35 is switched between a cut-off state and a turn-on state corresponding to the motor command, and the threshing and discharging apparatus 30 is driven and stopped.

  When the lift switch is operated by the third operation button 91, an electrical signal as a lift command is transmitted from the lift switch to the control device 93, the control device 93 is operated based on the lift command, and the lift cylinder 11 is controlled by the control device. 93. Thereby, the tank 13 is swung to the ascending side and the descending side corresponding to the elevation command.

  When the grain is taken out from the tank 13, the threshing / discharging device 30 can be switched to the discharging state by remote control of the threshing / discharging device 30 by the turning switch of the remote control device 84. The tank 13 can be switched to the ascending and discharging posture by remote operation of the tank 13 by the lift switch of the remote control device 84. The threshing and discharging device 30 can be driven by remote control of the motor 35 by the discharge switch of the remote control device 84.

  For example, when the harvesting operation is performed, the cereal discharge apparatus 30 can be switched to the retracted state by the remote operation of the cereal discharge apparatus 30 on the turning switch of the remote operation apparatus 84. The tank 13 can be switched to the lowered storage posture by remote operation of the tank 13 by the lift switch of the remote operation device 84. The threshing discharge device 30 can be stopped by remote control of the motor 35 by the discharge switch of the remote control device 84.

  As shown in FIGS. 21 and 22, an operating device mounting portion 94 is provided on the opposite side of the driving seat 80 across the side driving panel 81 in the lateral width direction of the traveling machine body 1. The operating device mounting portion 94 is provided in a tilting posture that is rearwardly lowered at a position corresponding to the front portion 80 a of the driver seat 80 in the front-rear direction of the traveling machine body 1. When the traveling machine body 1 is viewed in the front-rear direction, the operation device mounting portion 94 is horizontal or substantially horizontal. As shown in FIG. 22, the mounting surface 94 a of the operating device mounting portion 94 is configured to mount the remote operation device 84 in a posture (usable posture) in which the operation surface 84 a of the remote operation device 84 faces upward. It is configured. A holding portion 95 is provided around the placement surface 94a. The holding unit 95 rises from the edge of the operating device mounting unit 94 toward the mounting surface 94a. When the remote operation device 84 is placed on the operation device mounting portion 94, the holding portion 95 engages with the side portion of the remote operation device 84, and the holding portion 95 is placed on the placement surface so that the remote operation device 84 does not slide down. Held by.

  By holding the remote operation device 84 on the operation device mounting portion 94, it is possible to hold the remote operation device 84 in an easy-to-see posture at an easy-to-operate position while sitting on the driver seat 80.

  The operating device mounting portion 94 is supported on the side wall portion 81a of the side operation panel 81 by the support structure shown in FIGS.

  That is, as shown in FIGS. 22 and 23, a rib 96 is provided on the upper portion of the side wall portion 81a. The rib 96 is configured by folding back the upper end portion of the side wall portion 81a to the lateral outer side of the side wall portion 81a.

  As shown in FIGS. 22 and 23, a mounting portion 97 is provided at the lateral end of the operating device mounting portion 94 on the side operation panel 81 side. The attachment portion 97 extends downward from the operation device mounting portion 94.

  As shown in FIGS. 22 and 23, the front portion 97a of the mounting portion 97 is tightened and connected to the side wall portion 81a by a single connecting bolt 98, whereby the front end side of the operating device mounting portion 94 is connected to the side wall portion 81a. Has been.

  Of the mounting portion 97, the rear portion 97 b located behind the connecting bolt 98 is configured to be placed on the rib 96, and the rear end side of the operating device mounting portion 94 is configured to be received and supported by the rib 96. ing. The operating device mounting portion 94 is prevented from rotating by a rib 96 so that the rear end side of the operating device mounting portion 94 does not rotate to the side of lowering with the connecting bolt 98 as a swing fulcrum.

  As shown in FIGS. 2, 24, and 25, a right side step 100 extending before and after the driving unit 5 is provided on the right side of the driving unit 5. The driver can use the right side step 100 to inspect the precleaner 101 and the like, for example.

  As shown in FIG. 24, two rearview mirrors 102 and 103 are arranged in the vertical direction on the right side portion of the front portion of the operation unit 5. The upper rearview mirror 102 is provided at a position corresponding to the upper part of the driving unit 5, and the lower rearview mirror 103 is provided at a position corresponding to the lower part of the driving unit 5.

  A handrail 104 extending up and down the operation unit 5 is provided on the right lateral side of the front part of the operation unit 5, and the lower rear mirror 103 is supported by the handrail 104. The lower rearview mirror 103 is provided in a state located above the front end of the right step 100. The upper rearview mirror 102 is supported by a bracket 105 extending from the cabin 6.

  As shown in FIGS. 24 and 25, the range that can be viewed from the driving unit 5 using the upper rearview mirror 102 is an upper range H1 in the vertical direction and a range W1 closer to the outer side of the body in the left-right direction. . On the other hand, the range that can be viewed from the driving unit 5 using the lower rear mirror 103 is a range H2 that is lower than the visible range H1 of the upper rearview mirror 102 in the vertical direction. , A range W2 closer to the inside of the body than the visible range W1 of the upper rearview mirror 103.

  For example, when discharging the threshing grains from the tank 13, the state of discharging the grains from the tank 13 to the chute 36 can be confirmed by the upper rearview mirror 102. On the other hand, the lower rearview mirror 103 is used to visually confirm the status of receiving threshing grains from the chute 36 in a receiving portion (for example, a carrier bed of a transport vehicle) located below the discharge location of the tank 13. Can do. However, the visible range by the upper and lower rearview mirrors 102 and 103 shown in FIGS. 1 and 2 is an example, and is not limited to such a visible range.

  As shown in FIGS. 26 and 28, a third discharge port 106 is provided in a portion of the right bottom portion 14 located on the lateral side of the discharge screw 17. The third discharge port 106 opens toward the right lateral outer side of the traveling machine body 1 and is configured to be opened and closed by a lid member 107. The upper and lower edges of the lid member 107 are supported by the right bottom portion 14 via the support rail 108. The lid member 107 can be opened and closed by sliding operation in a direction along the axis of the discharge screw 17. In the present embodiment, the lid member 107 that opens and closes by sliding is adopted, but a lid member that opens and closes by swinging, or a lid member that opens and closes by attachment and removal can be employed.

  As shown in FIGS. 26 and 28, an exterior cover 109 is provided on the right side portion of the traveling machine body 1. The laterally outer side of the right bottom part 14 is covered with an exterior cover 109 over the entire length of the right bottom part 14, and the laterally outward side of the third discharge port 106 is covered with the exterior cover 109.

  As shown in FIG. 26, the exterior cover 109 is a long member having a size in the front-rear direction (front-rear length) of the traveling aircraft body 1 that is larger than the size in the vertical direction of the traveling aircraft body 1 (vertical width). And the longitudinal cross-sectional shape is comprised by the groove-shaped member. A connecting portion 109 a is provided at the front and rear end portions of the exterior cover 109. The front and rear connecting portions 109 a are connected to the reinforcing plate portion 110 in the right bottom portion 14 by connecting bolts 111. The exterior cover 109 is detachably attached to the tank 13.

  When it is necessary to remove the threshing grains from the third discharge port 106, such as when the discharge screw 17 and the discharge device main body 30A are clogged, the outer cover 109 is removed and the third discharge by the outer cover 109 is performed as shown in FIG. The cover of the outlet 106 is released, the lid member 107 is opened, and the third discharge port 106 is opened. When the elevating cylinder 11 is operated to switch the tank 13 from the storage posture to the discharge posture, the threshing grains located in the discharge screw 17 are discharged from the third discharge port 106 toward the right lateral outside of the traveling machine body by gravity. At this time, as shown by a two-dot chain line in FIG. 26 and as shown in FIG. 27, one end of the removed outer cover 109 is positioned below the third discharge port 106 in the longitudinal direction. By holding the other end portion facing the recovery member 112 such as a recovery container by human operation, the outer cover 109 serves as a guide member that guides the threshing grains discharged from the third discharge port 106 down to the recovery member 112. The threshing grains can be recovered in the recovery member 112 while exhibiting the function and preventing the threshing grains from spilling outside due to the groove-shaped cross-sectional shape of the exterior cover 109.

[Another embodiment]
(1) FIG. 29 is a rear view showing a cover 121 having another implementation structure. The cover 121 having another implementation structure is slidably supported on the guide rail 122 and slides between the screw guide state shown in FIG. 29 and the flow guide state shown in FIG. When the cover 121 is in the flow-down guide state, the cover 121 is continuous with the bottom plate 16 of the tank and forms the flow-down guide surface A on the surface side.

(2) FIG. 31 is a schematic rear view showing the threshing tank 13 having another implementation structure. The threshing tank 13 having another implementation structure includes a tank lower structure 13D having a bottom plate 16 and a recessed portion 15 and a tank upper structure 13U. The tank lower structure 13D is supported by the traveling machine body in an inclined state, and the bottom plate 16 has a downward inclination that is positioned downward toward the recessed portion side. The tank upper structure 13U can swing up and down in an ascending open position as a rising position and a descending closed position as a descending position around a swing axis P that is transverse to the tank lower structure 13D. By raising the tank upper structure 13U to the rising and opening posture, the first discharge port 20 is formed between the free end side of the tank upper structure 13U and the bottom plate 16, and the threshing stored in the threshing tank 13 is performed. The material is guided down to the first discharge port 20 by the flow guide surface A and is discharged from the first discharge port 20. When the tank upper structure 13U is lowered to the lowering and closing posture, the first discharge port 20 is closed by the lowering of the tank upper structure 13U, and cereal storage can be performed.

(3) In the above-described embodiment, the region where the discharge screw 17 is disposed is covered with the cover 21 so that the discharge screw 17 is positioned away from the flow guide surface. When the discharge screw 17 is discharged from the discharge port 20, the discharge screw 17 is moved from the position at which the cereal is discharged by the discharge screw 17, so that the discharge screw 17 is positioned away from the flow guide surface. Also good.

(4) In the above-described embodiment, an example in which the cover 21 that covers the region where the discharge screw 17 is disposed by covering the recessed portion 15 where the discharge screw 17 is disposed is shown. For example, a cover that directly covers the discharge screw 17 may be employed.

(5) In the above-described embodiment, the example in which the discharge direction of the threshing grains by the first discharge port 20 is set to the right lateral outside direction of the traveling machine body 1 is set. May be. Alternatively, the swing axis of the tank 13 may be set to a lateral axis in the direction along the width direction of the traveling machine body 1, and the discharge direction by the first discharge port 20 may be directed to the rear outer side of the traveling machine body 1.

(6) In the above-described embodiment, the example in which the threshing is discharged by the threshing discharge device 30 in the state where the tank 13 is raised to the rising discharge posture has been described. For example, the discharge direction of the discharge screw Is set in a direction crossing the swing axis P, and the bottom plate is provided in an inclined posture that descends toward the discharge screw, and the cereal discharge device 30 is kept in the lowered posture without raising the tank to the raised posture. It is also possible to implement the configuration by discharging the cereal.

(7) In the above-described embodiment, the example in which the swing axis P of the tank 13 is provided in a state where it coincides with the rotation axis of the discharge screw 17 is shown. It may be provided in a state of being set on the core and positioned on the lower side of the cereal flow lowering direction or on the lower side of the cereal flow lowering direction than the rotational axis of the discharge screw 17.

(8) In the above-described embodiment, an example in which the slope portion 29 is provided has been described. However, the slope portion 29 may be omitted.

(9) In the above-described embodiment, an example in which the chute 36 is provided has been described, but the chute 36 may be omitted.

(10) In the above-described embodiment, the example in which the margin body 52 is provided has been described. However, the embodiment may be implemented without providing the margin body 52.

(11) In the above-described embodiment, an example in which the mechanical linkage mechanism 40 configured by the operation cable 41 is employed is shown. However, a sensor for detecting the swing of the threshing tank 13 and an actuator for swinging the chute 36 are shown. Also, an electric linkage mechanism configured by a control unit that controls the actuator based on the detection result of the sensor may be employed.

(12) In the above-described embodiment, the lock mechanism LK may be configured to act directly on the chute 36, which is an example configured to lock the flexure / extension link 38.

(13) In the above-described embodiment, an example in which the switching arm 25 is configured to be directly operated by an artificial operation has been described. However, the switching arm 25 may be a mechanical linkage mechanism such as an operation cable or an electrical linkage mechanism. An operation member that is operated via the control unit may be employed as the selection unit.

  The present invention is not limited to a combine that harvests rice, wheat, soybeans, etc., but a corn harvester that harvests corn tufts and threshs the corn tufts in a threshing device to obtain seed grains of corn. It can be used for various harvesting machines. Further, the present invention can be used for a crawler type traveling device or a harvesting machine including a traveling device in which a wheel and a mini crawler are combined.

DESCRIPTION OF SYMBOLS 10 Harvesting part 12 Threshing apparatus 13 Threshing tank 13S Side wall part 15 Recessed part 16 Bottom plate 17 Discharge screw 21 Cover 21a Notch part 29 Slope part 30 Grain removing apparatus 36 Chute 36c Guide surface 52 Covering body 121 Cover

Claims (11)

A threshing device for threshing the harvested product harvested by the harvesting unit;
Storing the threshing obtained by the threshing device, and a threshing tank capable of swinging up and down between a descending posture and an ascending posture around a horizontal swing axis;
A threshing discharge device having a discharge screw inside the threshing tank,
A first discharge port provided in a portion of the threshing tank which is on a lower side when the threshing tank is in the ascending posture, and a threshing by driving the threshing discharge device. A second outlet for allowing discharge, and
The threshing tank discharges the cereal stored in the threshing tank from the first outlet, and discharges the cereal stored in the cerealing tank from the second outlet. It can be switched to the second discharge form,
When the threshing tank is in the first discharge mode, the threshing is guided to the bottom of the threshing tank from the portion on the higher side when the threshing tank is in the raised position to the first discharge port. The harvesting machine is configured such that the downflow guide surface is configured and the discharge screw is located at a position away from the downflow guide surface. Inside the threshing tank, a cover is provided that can be switched between a flow guide state that covers the region where the discharge screw is disposed and constitutes the flow guide surface, and a screw guide state that opens the region,
2. The cover according to claim 1, wherein when the threshing tank is in the first discharge configuration, the cover is in the flow-down guide state, and when the threshing tank is in the second discharge configuration, the cover is in the screw guide state. Harvester. The bottom is formed with a recessed portion recessed toward the bottom of the threshing tank,
The discharge screw is disposed in the recessed portion,
The harvester according to claim 2, wherein the cover in the flow-down guide state covers the recessed portion.   The harvester according to claim 3, wherein the cover in the screw guide state partially opens the recessed portion. The swing axis is set at a position closer to the lower side when the threshing tank is in the raised posture,
The first discharge port is provided in a low side wall portion that is positioned on a low side when the threshing tank is in the raised posture among the side wall portions of the threshing tank,
The harvesting machine according to any one of claims 2 to 4, wherein the discharge screw is provided in a state in which a rotation axis of the discharge screw coincides with the swing axis. A closed posture that closes the first discharge port facing the first discharge port, a state in which the first discharge port is opened by swinging downward from the closed posture, and the shed grains can be guided to flow down. With a chute that can swing up and down
On the guide surface of the chute, a laying body is provided to raise the cereal grain that is guided down to the center side,
Of the cover, a notch portion is formed in a portion located on the first discharge port side when the cover is in the flow guide state,
When the cover is in the flow-down guide state and the chute is in the closed position, the marginal body is located within the range of the notch in the top view of the threshing tank. The harvesting machine described.   The cover is swingable between the flow guide state and the screw guide state, and when the cover is in the flow guide state, the cover is continuously connected to a bottom plate of the threshing tank. The harvester according to any one of claims 2 to 6, constituting a surface.   The cover is slidable between the flow guide state and the screw guide state, and when the cover is in the flow guide state, the cover continues to the bottom plate of the threshing tank. The harvester according to any one of claims 2 to 6, constituting a surface.   The harvesting machine according to any one of claims 2 to 8, wherein the cover in the screw guide state is located at a position higher than the discharge screw when the threshing tank is in the raised posture. The cover in the screw guide state overlaps the bottom plate of the threshing tank,
Of the bottom plate of the threshing tank, the threshing that has flowed down when the threshing tank is in the ascending posture at a position adjacent to the screw guided state on the side opposite to the discharge screw. The harvesting machine according to claim 9, further comprising a slope portion that guides the upper side of the cover in the screw guide state. The swing axis is set at a position closer to the lower side when the threshing tank is in the raised posture,
The first discharge port is provided in a low side wall portion that is positioned on a low side when the threshing tank is in the raised posture among the side wall portions of the threshing tank,
The harvesting machine according to claim 1, wherein the discharge screw is provided in a state in which a rotation axis of the discharge screw coincides with the swing axis.

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