JP2021090473A - combine - Google Patents

Abstract

To provide a combine in which a waste straw transport unit can be easily opened.SOLUTION: A combine is configured so that a waste straw transport unit 12 is provided to cross an oscillation shaft center Y2 in a plan view. In the waste straw transport unit 12, a part positioned on a transport start end side and a part positioned on a transport termination side with respect to the oscillation shaft center Y2 can be vertically oscillated with a waste straw frame 50 around the oscillation shaft center Y2.SELECTED DRAWING: Figure 11

Description

The present invention is connected to a feed chain that sandwiches and transports the harvested culms, a threshing device that threshes the harvested culms transported by the feed chain with a handling barrel, and a threshing device that is connected to the rear side of the threshing device and from the feed chain. The present invention relates to a combine equipped with a straw culm transporting device that receives the culm after the threshing process and sandwiches and transports the straw to the rear.

As the combine as described above, for example, the combine described in Patent Document 1 is already known. The combine described in Patent Document 1 includes a feed chain that sandwiches and transports the harvested grain (“threshing feed chain” in the document) and a handling cylinder that handles the harvested grain that is transported by the feed chain (“handled cylinder” in the document). A threshing device (“threshing machine” in the literature) for threshing by, and a straw transporting device (“threshing machine” in the literature), which is connected to the rear side of the threshing device and receives the straw after threshing from the feed chain and holds and transports it backward ( In the literature, "threshing transfer device") is provided. An upper cover (“handler cover” in the literature) that covers the handler from above is provided above the handler. The upper cover is configured to swing open and close with one side of the handling chamber as a fulcrum. The straw-removing transport device is configured to swing up and down with a rotation shaft in the front-rear direction as a fulcrum. According to such a configuration, by swinging the upper cover and the straw-removing transport device upward, the upper cover and the straw-removing transport device are opened, so that maintenance work can be easily performed.

Japanese Unexamined Patent Publication No. 2012-50339

In the combine described in Patent Document 1, the upper cover and the straw transporting device must be opened separately, and the opening must be performed manually, which is troublesome.

In view of the above situation, there is a demand for a combine that can easily open the upper cover and the straw transfer device.

The feature of the present invention is
A feed chain that holds and transports the harvested culm,
A threshing device that threshes the harvested culms transported by the feed chain with a handling barrel.
It is a combine that is continuously installed on the rear side of the threshing device and is provided with a straw transporting device that receives the straw after the threshing process from the feed chain and sandwiches and transports the straw to the rear.
An upper cover that covers the handling cylinder from above and
An upper frame that supports the upper cover and can swing up and down around the swing axis extending in the front-rear direction of the machine.
An actuator that swings the upper frame upward,
The swing axis extends between a lowering position in which the straw transporting device supports the straw transporting device and the straw transporting device transports the straw and an ascending position in which the straw transporting device does not transport the straw. A straw frame that can swing up and down around
A connecting mechanism for connecting the upper frame and the straw frame so as to be disconnectable is provided.
In a connected state in which the upper frame and the straw exhaust frame are connected by the connecting mechanism, the upper frame and the straw exhaust frame can be swung upward by the actuator.
In the disconnected state in which the connected state is released, only the upper frame of the upper frame and the straw exhaust frame can be swung upward by the actuator.

According to this feature configuration, in the connected state, the upper frame and the straw-removing frame are swung upward by the actuator, so that the upper frame and the straw-removing frame are integrally swung upward. The straw transport device can be easily opened. Further, in the disconnected state, only the upper frame of the upper frame and the straw-removing frame is swung upward by the actuator, so that it is not necessary to open the upper cover when performing maintenance work on the straw-removing transport device. In that case, only the straw transport device can be opened.

Further, in the present invention
The upper frame is provided with a front-rear frame that is located on the outside of the upper frame in the left-right direction of the machine and extends in the front-rear direction of the machine.
The front-rear frame is extended to the rear side of the rear end of the handling cylinder.
It is preferable that the connecting mechanism can connect the front-rear frame and the outer end of the straw frame in the left-right direction of the machine.

According to this feature configuration, the front-rear frame of the upper frame located on the outside of the machine in the left-right direction of the machine and the end of the straw frame on the outside of the machine in the left-right direction of the machine are connected by a connecting mechanism. Become. As a result, the portions of the upper frame and the straw frame that are connected to each other come close to each other, so that the connecting mechanism can have a compact structure with a short connecting distance. In addition, it is easy to access the connecting mechanism from the outside of the machine body when performing the connecting work and the disconnecting work.

Further, in the present invention
The straw frame is connected to a horizontal frame extending from the swing axis side toward the outside of the machine in the left-right direction of the machine, and an end portion of the horizontal frame on the outside of the machine in the left-right direction of the machine, and in the front-rear direction of the machine. With an extending outer frame,
The outer frame extends along the front-rear frame and is adjacent to the front-rear frame in the descending position.
It is preferable that the connecting mechanism can connect the front-rear frame and the outer frame.

According to this feature configuration, the outer frame of the straw-exhausting frame, which is close to the front-rear frame, is connected to the front-rear frame by the connecting mechanism. As a result, the portions of the upper frame and the straw frame that are connected to each other are brought closer to each other, so that the connecting mechanism can be further made more compact.

Further, in the present invention
It is preferable that the connecting mechanism extends over the upper part of the front-rear facing frame and the upper part of the straw-removing frame.

Normally, the straw-removing transport device is supported by the straw-removing frame in a state of being located below the straw-removing frame. Here, if the connecting mechanism extends over the lower part of the front-rear facing frame and the lower part of the straw-removing frame, the connecting mechanism is located on the lower side (that is, the straw-removing device side) with respect to the straw-removing frame. Therefore, there is a concern that the connecting mechanism may hinder the transport of straw by the straw transport device.

However, according to this feature configuration, the connecting mechanism is located on the upper side (that is, the side opposite to the straw transporting device) with respect to the straw discharging frame, so that the connecting mechanism is the straw discharged by the straw transporting device. It becomes difficult to interfere with transportation. Further, the connecting mechanism can be accessed from above, which has a relatively large space on the opposite side of the straw-removing transport device, to make the connecting operation and the disconnecting operation easier.

Further, in the present invention
It is preferable that the connecting mechanism can be disconnected from each of the front-rear frame and the straw-removing frame.

According to this feature configuration, it is possible to select a member that swings upward from the upper frame and the straw-removing frame by disconnecting the connecting mechanism to the front-rear frame and the straw-removing frame, respectively. That is, only the upper frame of the upper frame and the straw-removing frame can be swung upward, or only the straw-removing frame of the upper frame and the straw-removing frame can be swung upward.

Further, in the present invention
It is equipped with a rear frame provided at the upper rear of the fuselage,
It is preferable that the front-rear frame and the rear frame are connected so as to be disconnectable.

According to this feature configuration, the upper frame, the straw frame, and the rear frame are integrated by connecting the front-rear frame and the straw frame by a connecting mechanism and connecting the front-rear frame and the rear frame. Therefore, a highly rigid structure can be constructed. Further, by releasing the connection between the front-rear frame and the rear frame, the upward swing of the upper frame is not hindered.

Further, in the present invention
The rear frame is provided with a portion adjacent to the front-rear frame in a state of being connected to the front-rear frame.
In a state where the front-rear frame and the rear frame are connected, it is preferable that the outer portion of the straw frame in the left-right direction of the machine is in contact with the rear frame in the vertical direction.

According to this feature configuration, the front-rear facing frame and the straw-removing frame are connected by a connecting mechanism, and by connecting the front-rear frame and the rear frame, the straw-removing frame comes into contact with the rear frame in the vertical direction. Become. As a result, the straw-removing frame is sandwiched between the rear frame and the connecting mechanism, and the connecting structure can be firmly configured.

Further, in the present invention
The handling body is supported by the upper frame, and the handling body is supported.
It is preferable that the handling cylinder together with the upper frame can be swung upward by the actuator.

According to this feature configuration, maintenance work of the handling cylinder can be easily performed.

It is a left side view which shows a head-feeding combine. It is a top view which shows the head-feeding combine. It is a left side view which shows the threshing apparatus. It is a rear view which shows the threshing apparatus in the state which the upper frame is lowered. It is a rear view which shows the threshing apparatus in the state which raised the upper frame. It is a top view which shows the rear part of the threshing apparatus and the straw transport apparatus. It is a left side view which shows the rear part of the threshing apparatus and the straw excretion transfer apparatus in the state which the upper frame and the straw expulsion frame are lowered. It is a rear view which shows the structure behind the threshing apparatus in the state which the upper frame and the straw frame are lowered. It is a rear view which shows the structure behind the threshing apparatus in the state where the upper frame and the straw frame are raised. It is a rear view which shows the straw excretion transfer device in the state which the upper frame and the straw expulsion frame are lowered. It is a rear view which shows the straw excretion transfer device in the state which raised the upper frame and the straw expulsion frame. It is an exploded perspective view which shows the structure of the base end side of a straw frame. It is a left side view which shows the structure of the base end side of a straw frame. It is an exploded perspective view which shows the upper frame, the straw frame and the rear frame. It is a back sectional view which shows the connection mechanism. It is a back sectional view which shows the inner lock mechanism in the engaged state. It is a back sectional view which shows the inner lock mechanism in the disengaged state. It is a back sectional view which shows the outer lock mechanism in the engaged state. It is a back sectional view which shows the outer lock mechanism in the disengaged state. It is a figure which shows the elevating operation part. It is a left side view which shows the rear part of the threshing apparatus and the straw excretion transfer apparatus in the state which raised the upper frame and the straw excretion frame. It is a left side view which shows the rear part of the threshing apparatus and the straw excretion transfer apparatus in the state which raised the upper frame and lowered the straw excretion frame. It is a left side sectional view which shows the rear upper cover. It is a perspective view which shows the rear upper cover. It is a figure which shows the ascending limit height and the swing angle of each of the upper frame and the straw-exhausting frame. It is a figure which shows the elevating mechanism of the upper frame and the straw expulsion frame which concerns on the 1st other example. In the first other example, it is a figure which shows the state which the upper frame and the straw frame are raised to the same ascending limit height. In the first other example, it is a figure which shows the state which the upper frame and the straw frame have risen to different rise limit heights. It is a figure which shows the elevating mechanism of the upper frame and the straw-removing frame which concerns on the 2nd other example. In the second other example, it is a figure which shows the state which the upper frame and the straw frame are raised to the same ascending limit height. In the second other example, it is a figure which shows the state which the upper frame and the straw frame have risen to different rise limit heights. It is the outer lock mechanism which concerns on another embodiment, and is the back sectional view which shows the engaging state. FIG. 5 is a rear sectional view showing an disengaged state of the outer lock mechanism according to another embodiment. It is a perspective view which shows the straw exhaust frame which concerns on another embodiment.

[Overall composition of combine harvester]
1 and 2 show a head-feeding combine. This combine includes an airframe frame 1 and a traveling device 2 that supports the airframe frame 1. A driving cabin 3 is provided on the right side of the front part of the fuselage. The driving cabin 3 includes a driving unit 4 on which the driver is boarding and a cabin 5 covering the driving unit 4. An engine (not shown) is provided below the driving unit 4.

In front of the driving cabin 3, a harvesting section 6 for harvesting crops in the field is provided. A grain storage tank 7 for storing grains is provided behind the operation cabin 3. A grain discharge device 8 for discharging grains in the grain storage tank 7 is provided. A feed chain 9 for sandwiching and transporting the cut grain culm is provided on the left side of the machine body. A threshing device 10 is provided on the left side of the grain storage tank 7. The threshing device 10 uses the handling cylinder 11 to thresh the harvested culms transported by the feed chain 9. A straw transporting device 12 is continuously provided on the rear side of the threshing device 10. The straw-removing transport device 12 receives the straw after the threshing process from the feed chain 9 and sandwiches and transports it backward.

[Harvest Department]
The harvesting section 6 is configured to have a plurality of cutting specifications (for example, six-row cutting specifications). The harvesting unit 6 includes a plurality of (for example, seven) weeding tools 13, a plurality of (for example, six) raising devices 14, a cutting device 15, and a conveying device 16. The weeding tool 13 weeds the crops in the field. The raising device 14 causes a planted crop. The cutting device 15 cuts the caused crop. The transport device 16 transports the cut crops backward toward the threshing device 10.

[Threshing equipment, etc.]
As shown in FIG. 3, a handling chamber 17 is formed in the upper part of the threshing device 10. The handling chamber 17 is provided with a handling cylinder 11. The handling cylinder 11 can rotate around a rotation axis Y1 extending in the front-rear direction of the machine body. A receiving net 18 is provided below the handling cylinder 11. A dust exhaust fan 19 for discharging dust to the outside is provided behind the handling chamber 17.

At the bottom of the threshing device 10, a rocking sorting device 20 that sifts and sorts objects to be sorted while transferring them to the rear of the machine, a wall insert 21 that blows sorting air to the rocking sorting device 20, and the grain of the first grain (single grain). The first collection unit 22 for collecting (threshed grains, etc.), the second collection unit 23 for collecting the second grain (grains with wall inserts, etc.), and the like are provided.

The first collection unit 22 is provided with the first screw 24 for transporting the grain of the first product to the right. At the right end of the first screw 24, a grain raising device 25 for lifting and transporting the grain of the first grain to the grain storage tank 7 is interlocked and connected.

The second collection unit 23 is provided with a second screw 26 for transporting the second grain to the right. At the right end of the second screw 26, a second reduction device 27 that reduces the grain of the second screw to the rocking sorting device 20 is interlocked and connected.

A straw cutting device 28 for cutting the straw transported by the straw transport device 12 is provided below the rear portion of the straw transport device 12. A cover 29 is provided to cover the straw cutting device 28. A switching plate 29a is provided in a portion of the cover 29 located above the straw cutting device 28. The switching plate 29a can swing open and close around a swing axis extending in the left-right direction of the machine body over a cutting position on the ascending side and a non-cutting position on the descending side. With the switching plate 29a open (in the state of the cutting position), the straw transported by the straw transporting device 12 is thrown into the straw cutting device 28. With the switching plate 29a closed (non-cutting position), the straw transported by the straw discharging device 12 slides on the upper surface of the switching plate 29a and falls to the ground.

As shown in FIGS. 3 to 7, wall portions 30 are provided at the front end portion and the rear end portion of the handling chamber 17, respectively. The front wall portion 30 constitutes the front wall portion of the handling chamber 17. The rear wall portion 30 constitutes the rear wall portion of the handling chamber 17. The wall portion 30 includes a movable wall 31 and a fixed wall 32. The handling cylinder 11 is rotatably supported on the movable wall 31 via the handling cylinder shaft 11a. A connecting arm 33 for connecting the movable wall 31 and the fixed wall 32 is provided. The movable wall 31 is supported by the fixed wall 32 so as to be able to swing up and down around the swing axis Y2 extending in the front-rear direction of the machine body via the connecting arm 33. A transmission shaft 34 through which the power of the engine is transmitted is provided over the fixed wall 32 on the front side and the fixed wall 32 on the rear side.

The right side portion of the threshing device 10 is composed of a right side wall 35. The right side wall 35 extends to the rear end of the fuselage. The right side wall 35 includes an inclined portion 35a. The inclined portion 35a is inclined so as to be located on the rear side of the wall portion 30 on the rear side toward the center side on the left and right sides of the machine body.

Front-rear facing frames 36L and 36R extending in the front-rear direction of the machine body are provided on both left and right sides of the threshing device 10, respectively. The front-rear frame 36L on the left side extends to the rear side from the rear end of the handling cylinder 11. The front-rear frame 36L on the left side is composed of a square pipe having a substantially square cross section. The front-rear frame 36R on the right side extends to the rear side from the rear end of the handling cylinder 11. The front-rear frame 36R on the right side supports the front fixed wall 32, the rear fixed wall 32, and the right side wall 35. The front-rear frame 36R on the right side is composed of a square pipe having a substantially rectangular cross section (horizontally elongated substantially rectangular shape).

[Rear frame]
A rear frame 37 is provided on the upper rear portion of the fuselage. The rear frame 37 is located on the outside of the threshing device 10 in the left-right direction of the machine. The rear frame 37 is formed in a substantially U shape that projects rearward from the rear of the threshing device 10 in a side view. The rear frame 37 is composed of a round pipe.

[Top cover]
An upper cover 38 that covers the handling cylinder 11 from above is provided. The upper cover 38 extends to the upper side of the rear portion of the straw discharge transport device 12 on the rear side of the rear end of the handling cylinder 11. An upper right cover 39 is provided to the right of the upper cover 38. The right upper cover 39 extends to the upper side of the rear portion of the straw discharge transport device 12 on the rear side of the rear end of the handling cylinder 11. The upper right cover 39 is supported by the right front-rear frame 36R so as to be able to swing up and down around the swing axis extending in the front-rear direction of the machine body.

[Upper frame]
The upper cover 38 is supported by the upper frame 40. The upper frame 40 can swing up and down about a transmission shaft 34 extending in the front-rear direction of the machine body. The upper frame 40 is supported by the front wall portion 30 and the rear wall portion 30 so as to be swingable up and down around the swing axis Y2 via the transmission shaft 34. The upper frame 40 includes a pair of front and rear movable walls 31 and a left front and rear facing frame 36L. The front-rear frame 36L on the left side is located on the outer side of the upper frame 40 in the left-right direction of the machine body.

A hydraulic cylinder 41 that swings the upper frame 40 upward is provided. The hydraulic cylinder 41 is provided over the rear movable wall 31 and the rear fixed wall 32. The hydraulic cylinder 41 is composed of, for example, a double-acting hydraulic cylinder. However, the hydraulic cylinder 41 may be composed of a single-acting hydraulic cylinder.

[Handling body lock mechanism]
The handling cylinder 11 together with the upper frame 40 can be swung upward by the hydraulic cylinder 41. A handling cylinder lock mechanism 42 for holding the handling cylinder 11 at a threshing processing position where the threshing processing is performed is provided. The handling cylinder lock mechanism 42 includes a pair of front and rear hook plates 43 and a pair of front and rear handling cylinder hook pins 44. A hook plate 43 is swingably supported around the swing axis Y3 in the front-rear direction of the machine body by each of the front wall portion 30 and the rear wall portion 30. At the tip of the hook plate 43, a hook portion 43a that can be engaged with the handling cylinder hook pin 44 is provided. By engaging the hook portion 43a with the handling cylinder hook pin 44, the handling cylinder 11 is held at the threshing processing position. When the hook portion 43a is disengaged from the handling cylinder hook pin 44, the handling cylinder 11 and the upper frame 40 swing upward by the hydraulic cylinder 41. A motor M that swings and drives a pair of front and rear hook plates 43 is supported on the rear surface of the rear wall portion 30. A pair of front and rear hook plates 43 are swung to the engaging side and the disengaging side by the motor M.

[Straw transport device]
As shown in FIGS. 6 and 7, the straw-removing transfer device 12 is provided in an inclined state so as to be located on the left-right center side of the machine body toward the rear side. The straw discharge transporting device 12 includes a stock root transporting device 45 that sandwiches and transports the stock root side of the straw, and a tip transporting device 46 that locks and transports the tip side of the straw. The stock source transport device 45 includes a straw discharge chain 47 with a protrusion 47a and a straw discharge rail 48. The straw exhaust rail 48 is arranged below the straw exhaust chain 47 so as to face the lower path of the straw exhaust chain 47. The tip transfer device 46 includes a straw tip chain 49 with a tine 49a.

The straw discharge transport device 12 is supported by the straw discharge frame 50. The straw discharge transport device 12 is removable from the straw discharge frame 50. The straw discharge transport device 12 is suspended and supported by the straw discharge frame 50 via the front stay 51 and the rear stay 52. The straw discharge transport device 12 is detachably bolted to the front stay 51. The straw discharge transport device 12 is detachably bolted to the rear stay 52.

The straw transport space S of the straw transport device 12 is formed behind the rear wall portion 30. The straw-removing space S is formed so as to straddle the straw-removing frame 50 in the front-rear direction of the machine body. In a plan view, the straw-removing space S extends so as to be located on the left-right center side of the machine body toward the downstream side in the transport direction at the front-rear halfway portion (the portion corresponding to the front end of the inclined portion 35a) of the straw-removing space S.

[Belt transmission mechanism]
As shown in FIGS. 6, 8 and 9, a belt transmission mechanism 53 for transmitting the power of the transmission shaft 34 to the straw transfer device 12 is provided across the transmission shaft 34 and the straw transfer device 12. .. The belt transmission mechanism 53 includes a drive pulley 54, a driven pulley 55, and a transmission belt 56. The drive pulley 54 is fixed to a portion of the transmission shaft 34 that projects rearward from the rear fixing wall 32. The driven pulley 55 is fixed to an input shaft (not shown) of the straw discharging device 12. The transmission belt 56 is wound around a drive pulley 54 and a driven pulley 55.

[Tension clutch mechanism]
A tension clutch mechanism 57 is provided to switch the belt transmission mechanism 53 between a transmission state in which power is transmitted to the straw transport device 12 and a cutoff state in which power transmission to the straw transport device 12 is cut off. The tension clutch mechanism 57 includes a first tension arm 58, a first tension roller 59, a second tension arm 60, a second tension roller 61, and a tension spring 62. The first tension arm 58 is rotatably supported by the transmission shaft 34. A first tension roller 59 is rotatably supported at the tip of the first tension arm 58. The first tension roller 59 is in contact with the portion of the transmission belt 56 corresponding to the lower path from above. A mounting portion 63 to which the tension spring 62 is mounted is provided at the base end portion of the first tension arm 58.

The second tension arm 60 is fixed to the first tension arm 58 so that it can rotate integrally with the first tension arm 58. A second tension roller 61 is rotatably supported at the tip of the second tension arm 60. The second tension roller 61 is in contact with the portion of the transmission belt 56 corresponding to the upper path from above.

The tension spring 62 urges the first tension arm 58 and the second tension arm 60 so as to swing around the swing axis Y2 in the tension applying direction. The end of the tension spring 62 on the opposite side of the attachment portion 63 is attached to the rod 64. The rod 64 is supported by the stay 65 so as to be adjustable in position. The stay 65 is fixed (for example, welded and fixed) to the straw exhaust frame 50 (front frame 67). By adjusting the position of the rod 64 with respect to the stay 65, the urging force of the tension spring 62 changes.

[Straw frame]
As shown in FIGS. 6 to 11, the straw exhaust frame 50 supports the front portion and the rear portion of the straw exhaust transport device 12 via the front stay 51 and the rear stay 52. The straw exhaust frame 50 is formed in a frame shape. The straw exhaust frame 50 includes a base end frame 66, a front frame 67, a rear frame 68, and a free end frame 69. One round pipe is bent to form a front frame 67, a rear frame 68, and a free end frame 69. The front portion of the straw discharge transport device 12 is supported by the free end frame 69 via the front stay 51. The rear portion of the straw discharge transport device 12 is supported by a portion of the rear frame 68 on the left and right center side of the machine body via a rear stay 52.

The straw discharge frame 50 swings up and down around the swing axis Y2 over a lowering position where the straw discharge transport device 12 transports the straw and an ascending position where the straw discharge transport device 12 does not transport the straw. It is movable. The straw exhaust frame 50 can swing up and down around a support shaft 70 extending in the front-rear direction of the machine body. A pair of front and rear gas dampers 71 for swinging the straw frame 50 upward are provided. The gas damper 71 is provided over the straw exhaust frame 50 (front frame 67) and the lower stay 72. An upper stay 73 to which the gas damper 71 is connected is fixed (for example, welded and fixed) to the front frame 67.

As shown in FIGS. 12 to 14, the base end frame 66 is provided on the base end side of the straw exhaust frame 50 and extends in the front-rear direction of the machine body. The base end frame 66 is a connecting frame portion extending over a front side frame portion 74 constituting the front side, a rear side frame portion 75 constituting the rear side, a front side frame portion 74, and a rear side frame portion 75. It has 76 and. A front portion (front frame portion 74) of the base end frame 66 is supported by a support shaft 70 via a pair of front and rear stays 77.

A stepped portion 66a that falls downward is formed at a portion of the base end frame 66 corresponding to the connecting frame portion 76. The connecting frame portion 76 includes a grooved plate 78 that opens downward and a connecting plate 79. The groove plate 78 is provided over the lower surface of the front side frame portion 74 and the lower surface of the rear side frame portion 75. Inside the grooved plate 78, a connecting plate 79 for connecting the left side wall and the right side wall of the grooved plate 78 is provided.

The front frame 67 is connected to the front end portion of the base end frame 66 and extends from the support shaft 70 side toward the outside of the machine body in the left-right direction of the machine body. The rear frame 68 is connected to the rear end portion of the base end frame 66 and extends from the support shaft 70 side toward the outside of the machine body in the left-right direction of the machine body.

The free end frame 69 is provided on the free end side of the straw exhaust frame 50 and extends in the front-rear direction of the machine body. The free end frame 69 is connected to the outer end of the front frame 67 in the left-right direction of the machine and the outer end of the rear frame 68 in the left-right direction of the machine. The free end frame 69 extends along the left front-rear frame 36L in the lowered position, and is adjacent to the left front-rear frame 36L in a state of being located to the right of the left front-rear frame 36L.

The support shaft 70 is a shaft different from the transmission shaft 34, and is supported by the front-rear frame 36R on the right side that supports the transmission shaft 34. The transmission shaft 34 and the support shaft 70 are arranged on the same axis (swing axis Y2). The support shaft 70 is arranged on the front side of the front-rear halfway portion (the portion corresponding to the front end of the inclined portion 35a) of the straw exhausting space S. The front-rear frame 36R on the right side extends to the rear side of the support shaft 70. The support shaft 70 is supported by the bracket 81 via a pair of front and rear stays 80. The bracket 81 is vertically provided on the lower surface of the front-rear frame 36R on the right side. The stay 80 is bolted to the bracket 81. The lower stay 72 is supported by the stay 80 on the front side.

[Positioning mechanism]
As shown in FIG. 14, in a state where the straw exhaust frame 50 is located in the descending position, the free end side (free) of the straw exhaust frame 50 is prevented so that the straw exhaust frame 50 does not shift in position (position shift in the front-rear direction of the machine body or the like). A positioning mechanism 82 for positioning the end frame 69) on the rear frame 37 is provided. The positioning mechanism 82 includes a claw portion 83 and an inserted portion 84 into which the claw portion 83 is inserted. The claw portion 83 is supported by the free end frame 69 via the stay 85. The claw portion 83 is detachably fixed to the stay 85 by a bolt 86. The insertion portion 84 is fixed to the rear frame 37 (for example, welded and fixed). By inserting the claw portion 83 into the inserted portion 84, the straw discharge frame 50 is positioned in the lowered position, and the straw discharge frame 50 is not displaced (positionally displaced in the front-rear direction of the machine body or the like). The free end side (free end frame 69) of 50 is positioned on the rear frame 37.

[Connecting mechanism]
As shown in FIGS. 14 and 15, a connecting mechanism 87 is provided for connecting the upper frame 40 (left front / rear facing frame 36L) and the straw waste frame 50 (free end frame 69) so as to be disconnectable. The connecting mechanism 87 can connect the left front-rear facing frame 36L and the outer end of the straw frame 50 in the left-right direction of the machine (free end frame 69). The connecting mechanism 87 is provided over the upper portion of the front-rear facing frame 36L on the left side and the upper portion of the free end frame 69. The connecting mechanism 87 includes an upper side fixing bracket 88, a straw side fixing bracket 89, and a connecting bracket 90. The upper side fixing bracket 88 is fixed (for example, welded and fixed) to the left front-rear facing frame 36L. The straw side fixing bracket 89 is fixed (for example, welded and fixed) to the front portion of the free end frame 69. The connecting bracket 90 is provided over the upper surface of the upper side fixing bracket 88 and the upper surface of the straw side fixing bracket 89. The connecting bracket 90 is detachably connected to each of the upper side fixing bracket 88 and the straw side fixing bracket 89 by a bolt 91. That is, the connecting mechanism 87 can be disconnected from the left front / rear facing frame 36L and the free end frame 69, respectively.

[Inner lock mechanism]
As shown in FIGS. 16 and 17, the inside of the straw frame 50 holding the base end side (base end frame 66) of the straw waste frame 50 in the front-rear facing frame 36R on the right side in a state where the straw discharge frame 50 is located in the descending position. A lock mechanism 92 is provided. The inner lock mechanism 92 holds the rear portion of the proximal frame 66 on the right front-rear frame 36R. The inner lock mechanism 92 includes an inner hook 93 and an inner hook pin 94.

The inner hook 93 is detachably fixed to the right side wall of the connecting frame portion 76 (grooved plate 78) of the base end frame 66 by bolts 95. The inner hook 93 includes a pair of front and rear hook portions 93a. A connecting plate 93b for connecting the hook portion 93a on the front side and the hook portion 93a on the rear side is provided.

The inner hook pin 94 is supported by the front-rear frame 36R on the right side via the first stay 96 and the second stay 97. The first stay 96 is fixed (for example, welded and fixed) to the front-rear frame 36R on the right side. The second stay 97 is detachably fixed to the first stay 96 by bolts 98. The inner hook pin 94 is provided over the front wall portion and the rear wall portion of the second stay 97.

[Operation of inner lock mechanism]
The inner lock mechanism 92 follows the swing of the straw exhaust frame 50 toward the lowering position side, engages with the right front-rear facing frame 36R, and swings the straw discharge frame 50 toward the ascending position side. To disengage the right front-rear frame 36R.

More specifically, the inner hook 93 engages with the inner hook pin 94 as the straw frame 50 swings toward the descending position side. Then, following the swing of the straw exhaust frame 50 toward the ascending position side, the engagement of the inner hook 93 with the inner hook pin 94 is released. Here, when the straw exhaust frame 50 swings from the descending position to the ascending position side, the inner hook pin 94 enters the step portion 66a. As a result, when the straw exhaust frame 50 swings up and down, the base end frame 66 does not interfere with the inner hook pin 94.

[Outer lock mechanism]
As shown in FIGS. 18 and 19, the outer lock mechanism 100 holds the free end side (free end frame 69) of the straw exhaust frame 50 in the rear frame 37 in a state where the straw exhaust frame 50 is located in the lowered position. Is provided. The outer locking mechanism 100 includes an outer hook 101 and an outer hook pin 102. The outer hook 101 includes a base portion 101a and a hook portion 101b. The hook portion 101b is removably fixed to the base portion 101a by a bolt 103.

The outer hook pin 102 is arranged on the left side of the rear frame 37 at a position slightly distant from the rear frame 37. The outer hook pin 102 is supported by the rear frame 37 via a first stay 104 and a second stay 105 (see FIG. 14).

The outer lock mechanism 100 holds the rear portion of the left front-rear frame 36L on the rear frame 37. The left front-rear frame 36L and the rear frame 37 are detachably connected by the outer lock mechanism 100. The rear frame 37 is located to the right of the left front-rear frame 36L in a state where the left front-rear frame 36L and the rear frame 37 are connected by the outer lock mechanism 100. That is, the rear frame 37 is provided with a portion adjacent to the left front-rear frame 36L in a state of being connected to the left front-rear frame 36L by the outer lock mechanism 100. The free end frame 69 is in contact with the rear frame 37 in the vertical direction in a state where the left front-rear frame 36L and the rear frame 37 are connected by the outer lock mechanism 100. Specifically, the free end frame 69 is in contact with the rear frame 37 from above with respect to the rear frame 37 in a state where the left front-rear frame 36L and the rear frame 37 are connected by the outer lock mechanism 100. That is, the free end frame 69 is sandwiched in the vertical direction by the rear frame 37 and the connecting mechanism 87 (straw-side fixing bracket 89) (sandwich structure).

[Link mechanism]
As shown in FIGS. 6 to 9, a link mechanism 106 for interlocking and connecting the handling cylinder lock mechanism 42 (rear hook plate 43) and the outer lock mechanism 100 (outer hook 101) is provided. The link mechanism 106 includes a first link arm 107, a second link arm 108, and a link rod 109. The first link arm 107 is connected to the base end portion of the hook plate 43 on the rear side so as to be relatively swingable. The first link arm 107 and the second link arm 108 are connected so as to be able to swing relative to each other.

The link rod 109 is supported by the left front-rear frame 36L via the front stay 110 and the rear stay 111. The link rod 109 is rotatably supported by the front stay 110 and the rear stay 111. A second link arm 108 is connected to the front end of the link rod 109 so as not to swing relative to each other. An outer hook 101 is connected to the rear end of the link rod 109 so as not to swing relative to each other.

[Elevating operation unit]
As shown in FIG. 20, an elevating operation unit 112 for elevating operation is provided in the operation unit 4. The elevating operation unit 112 includes a power switch 113, an ascending switch 114, and a descending switch 115. When performing the ascending operation, the ascending switch 114 and the power switch 113 are simultaneously pressed and operated. The ascending operation is performed only while the ascending switch 114 and the power switch 113 are simultaneously pressed and operated. When the lowering operation is performed, the lowering switch 115 and the power switch 113 are pressed at the same time. The lowering operation is performed only while the lowering switch 115 and the power switch 113 are simultaneously pressed and operated. The elevating operation unit 112 may be provided in addition to the operation unit 4 (or instead of the operation unit 4), for example, on the left side portion of the threshing device 10 so that the operator can operate it from outside the machine.

[Rear top cover]
As shown in FIGS. 2, 6, 23 and 24, a rear upper cover 116 is provided to cover the straw discharging device 12 from the rear upper side. The rear upper cover 116 includes a main body portion 117 and an upper portion 118.

The main body 117 has a notch 117a that opens forward. The cutout portion 117a is formed in a horizontally long substantially trapezoidal shape in a plan view. The length of the front edge of the notch 117a (the length in the left-right direction of the machine) is longer than the length of the trailing edge of the notch 117a (the length in the left-right direction of the machine).

The upper portion 118 is located above the rear portion of the rear upper cover 116 of the straw discharging device 12. The upper portion 118 overlaps with the rear portion of the straw discharging device 12 in a plan view. The upper portion 118 is provided in the notch 117a so as to close the notch 117a. The upper portion 118 is supported by the main body portion 117 so as to be vertically swingable via a support shaft 119 extending in the left-right direction of the machine body on the rear side of the upper portion 118. The upper portion 118 swings up and down around a support shaft 119 extending in the left-right direction of the machine on the rear side of the upper portion 118 over a closed position for closing the straw transport space S and an open position for opening the straw transport space S. It is possible.

[Interlocking mechanism]
An interlocking mechanism 120 that swings the upper portion 118 toward the open position is provided in conjunction with the swing of the straw exhaust frame 50 toward the ascending position side. The interlocking mechanism 120 includes an arm 121 and a roller 122. The arm 121 extends from the straw frame 50 (rear frame 68) to the lower portion of the upper portion 118. A roller 122 capable of contacting the contact portion 126c from below is provided at the tip end portion of the arm 121. The roller 122 can rotate around a rotation axis extending in the front-rear direction of the machine body. The arm 121 is detachably fixed to the arm stay 123 by bolts 124. The arm stay 123 is fixed to the rear frame 68 (for example, welded and fixed).

A main body stay 125 is bolted to the inner surface of the main body 117. An upper portion stay 126 is fixed (for example, welded and fixed) to the inner surface portion of the upper portion 118. A support shaft 119 is provided over the main body stay 125 and the upper stay 126. The upper partial stay 126 includes a pair of left and right support portions 126a that support the support shaft 119, an attachment portion 126b to which the spring 127 is attached, and a contact portion 126c to which the roller 122 can come into contact. The contact portion 126c is composed of a plate-shaped portion extending in the left-right direction of the machine body along the inner surface of the upper portion 118.

A spring 127 is provided to urge the upper portion 118 to swing toward the closed position. The spring 127 is provided over the upper portion 118 and the main body portion 117. The end of the spring 127 on the upper portion 118 side is attached to the attachment portion 126b. The main body 117 is provided with a mounting portion 128 to which the spring 127 is mounted. The end of the spring 127 on the main body 117 side is attached to the attachment portion 128.

The upper portion 118 is formed in a shape slightly larger than the notch portion 117a in a plan view. The edge of the upper portion 118 comes into contact with the edge of the main body 117 corresponding to the notch 117a from above, thereby preventing the upper portion 118 from swinging below the closed position. .. That is, the edge portion of the upper portion 118 and the edge portion of the main body portion 117 corresponding to the notch portion 117a constitute a blocking portion 129 that prevents the upper portion 118 from swinging below the closed position. ing.

[Up and down operation of upper frame and straw frame]
As shown in FIGS. 8 and 9, when the operator performs the raising operation by the raising / lowering operation unit 112, the pair of front and rear hook plates 43 are swung to the disengagement side by the motor M. As a result, the hook plate 43 (hook portion 43a) is released from the engagement with the handling cylinder hook pin 44. Then, the outer hook 101 is swung to the disengagement side in conjunction with the swing of the hook plate 43 on the rear side to the disengagement side.

Then, in the connected state in which the upper frame 40 and the straw frame 50 are connected by the connecting mechanism 87, as shown in FIGS. 9 and 21, when the outer hook 101 is disengaged from the outer hook pin 102, the upper part is upper. The frame 40 and the straw frame 50 are swung upward by the hydraulic cylinder 41. At that time, the handling cylinder 11, the belt transmission mechanism 53, and the tension clutch mechanism 57 are also swung upward by the hydraulic cylinder 41 together with the upper frame 40 and the straw exhaust frame 50. Therefore, the positional relationship of the pulleys (drive pulley 54, driven pulley 55) in the belt transmission mechanism 53 does not change.

Then, following the swing of the straw exhaust frame 50 toward the ascending position side, the engagement of the inner hook 93 with the inner hook pin 94 is released. In this way, the upper frame 40 and the straw frame 50 are integrally raised to the same rising limit height.

Further, when the straw exhaust frame 50 swings toward the ascending position side, the arm 121 pushes up the upper portion 118 via the roller 122 in conjunction with the swinging of the straw exhaust frame 50 toward the ascending position side. In this way, the upper portion 118 swings toward the open position in conjunction with the swing of the straw exhaust frame 50 toward the ascending position side.

Then, when the operator performs the lowering operation by the raising / lowering operation unit 112, the upper frame 40 and the straw exhaust frame 50 are swung downward as the hydraulic cylinder 41 contracts. Then, the inner hook 93 engages with the inner hook pin 94 as the straw exhaust frame 50 swings toward the lowering position side.

Then, when the upper frame 40 and the straw exhaust frame 50 are positioned in the descending position, the pair of front and rear hook plates 43 are swung to the engaging side by the motor M. As a result, the hook plate 43 (hook portion 43a) engages with the handling body hook pin 44. Then, the outer hook 101 is swung to the engaging side in conjunction with the swing of the hook plate 43 on the rear side to the engaging side.

On the other hand, in the state where the connection between the upper frame 40 and the straw frame 50 is released (disconnection state), as shown in FIG. 22, when the outer hook 101 is disengaged from the outer hook pin 102, the upper portion is released. Of the frame 40 and the straw frame 50, only the upper frame 40 is swung upward by the hydraulic cylinder 41. At that time, the handling cylinder 11 and the tension clutch mechanism 57 are also swung upward by the hydraulic cylinder 41 together with the upper frame 40. If only the upper frame 40 of the upper frame 40 and the straw exhaust frame 50 is to be swung upward, the transmission belt 56 needs to be removed from the drive pulley 54 in advance. In this way, of the upper frame 40 and the straw frame 50, only the upper frame 40 rises to the ascending limit height.

Then, by swinging the straw exhaust frame 50 upward by the gas damper 71, the straw exhaust frame 50 rises to the ascending limit height. As described above, where the straw discharge transport device 12 is removable from the straw discharge frame 50, if the straw discharge transport device 12 is removed from the straw discharge transport device 12, only the straw discharge frame 50 is swung upward. be able to.

Next, there is a state in which the upper frame 40 and the straw frame 50 can be integrally raised to the same ascending limit height (hereinafter referred to as "first mode"), and an ascending limit in which the upper frame 40 and the straw frame 50 are different. An embodiment that can be switched to a state in which the vehicle can be raised to a height (hereinafter referred to as “second mode”) will be described with reference to FIGS. 25 to 31.

As shown in FIG. 25, in the first mode, the ascending limit height of the upper frame 40 and the ascending limit height of the straw exhaust frame 50 are set to the same ascending limit height H1. Further, the swing angle of the upper frame 40 and the swing angle of the straw exhaust frame 50 are set to the same swing angle α.

In the second mode, the ascending limit height of the upper frame 40 and the ascending limit height of the straw exhaust frame 50 are set to different ascending limit heights. Specifically, the ascending limit height of the upper frame 40 is set to the ascending limit height H1, and the ascending limit height of the straw exhaust frame 50 is lower than the ascending limit height H1 (ascending). It is set to the limit height H2). That is, the ascending limit height H1 of the upper frame 40 by the hydraulic cylinder 41 is set at a position higher than the ascending limit height H2 of the straw exhaust frame 50 by the gas damper 71.

Further, the swing angle of the upper frame 40 and the swing angle of the straw exhaust frame 50 are set to different swing angles. Specifically, the swing angle of the upper frame 40 is set to the swing angle α, and the swing angle of the straw exhaust frame 50 is smaller than the swing angle α (swing angle β). Is set to.

In the examples shown in FIGS. 26 to 28, the hydraulic cylinder 41 that swings the upper frame 40 upward and the gas damper 71 that swings the straw frame 50 upward are used as an elevating mechanism for the upper frame 40 and the straw exhaust frame 50. , A connecting mechanism 87 that connects the upper frame 40 and the straw frame 50 so as to be disconnectable is provided. In the example shown in FIGS. 26 to 28, the connecting mechanism 87 functions as a switching mechanism for switching between the first mode and the second mode. FIG. 26 shows a state in which the upper frame 40 and the straw exhaust frame 50 are located in the descending position.

As shown in FIG. 27, in the first mode, the upper frame 40 and the straw exhaust frame 50 are connected by the connecting mechanism 87 (connected state). In this connected state, the upper frame 40 and the straw exhaust frame 50 are swung upward by the hydraulic cylinder 41 so that the upper frame 40 and the straw exhaust frame 50 are integrally raised to the same ascending limit height H1.

In this case, by disconnecting the gas damper 71 and the straw frame 50 in advance, the straw frame 50 exceeds the maximum extension length of the gas damper 71 (corresponding to the ascending limit height H2). The gas damper 71 is not damaged even if the height reaches the climb limit height H1.

As shown in FIG. 28, in the second mode, the connection between the upper frame 40 and the straw exhaust frame 50 is released (disconnection state). In this disconnected state, the upper frame 40 is swung upward by the hydraulic cylinder 41 so that the upper frame 40 rises to the ascending limit height H1.

Then, the straw exhaust frame 50 can be swung upward by the gas damper 71 so that the straw exhaust frame 50 rises to the ascending limit height H2.

Further, as shown in FIGS. 29 to 31, the upper frame 40 is provided with a pressing portion 40a for pressing the straw exhaust frame 50 from above, and the straw exhaust frame 50 is provided at the end of the gas damper 71 on the straw exhaust frame 50 side. May be placed so as to be separable upward with respect to the gas damper 71. Also in the examples shown in FIGS. 29 to 31, the connecting mechanism 87 functions as a switching mechanism for switching between the first mode and the second mode. FIG. 29 shows a state in which the upper frame 40 and the straw exhaust frame 50 are located in the descending position.

As shown in FIG. 30, in the first mode, the upper frame 40 and the straw exhaust frame 50 are connected by the connecting mechanism 87 (connected state). In this connected state, the upper frame 40 and the straw exhaust frame 50 are swung upward by the hydraulic cylinder 41 so that the upper frame 40 and the straw exhaust frame 50 are integrally raised to the same ascending limit height H1.

At that time, as described above, since the straw exhaust frame 50 is placed at the end of the gas damper 71 on the straw exhaust frame 50 side so as to be separated upward from the gas damper 71, the straw exhaust frame 50 is placed on the gas damper 71. When the straw rises beyond the maximum extension length of 71 (corresponding to the climb limit height H2), the straw exhaust frame 50 is separated upward with respect to the gas damper 71. As a result, even if the straw exhaust frame 50 rises to the rising limit height H1 beyond the maximum extension length of the gas damper 71 (corresponding to the rising limit height H2), the gas damper 71 is not damaged.

As shown in FIG. 31, in the second mode, the connection between the upper frame 40 and the straw exhaust frame 50 is released (disconnection state). In this disconnected state, the upper frame 40 is swung upward by the hydraulic cylinder 41 so that the upper frame 40 rises to the ascending limit height H1.

Then, the straw exhaust frame 50 can be swung upward by the gas damper 71 so that the straw exhaust frame 50 rises to the ascending limit height H2.

After that, when the upper frame 40 is lowered, the holding portion 40a presses the straw exhaust frame 50 from above, so that the gas damper 71 automatically contracts, and the straw exhaust frame 50 is lowered together with the upper frame 40. ..

In the examples shown in FIGS. 26 to 28 and the examples shown in FIGS. 29 to 30, a lock mechanism (not shown) for holding the position of the straw exhaust frame 50 on the rear frame 37 may be provided. Thereby, in the second mode, the straw-exhausting frame 50 can be held in the rear frame 37 by the locking mechanism so that the straw-exhausting frame 50 does not rise even if the upper frame 40 is raised.

Although not shown, an electric actuator (not shown) is used as an actuator for swinging the upper frame 40 up and down instead of the hydraulic cylinder 41, and the straw exhaust frame 50 is swung up and down instead of the gas damper 71. An electric actuator (not shown) may be adopted as the actuator to be moved. The electric actuator may be either an electric motor or an electric cylinder. In this example, the control device (not shown) that controls the electric actuator is provided with a function of switching between the first mode and the second mode.

In this example, in the second mode, when the upper frame 40 and the straw exhaust frame 50 are raised to the ascending limit height H2 by the operator performing the ascending operation by the elevating operation unit 112, the upper frame 40 and the straw exhaust frame 50 are raised. Stops temporarily at the ascending limit height H2. After that, when the operator again performs the ascending operation by the elevating operation unit 112, only the upper frame 40 rises to the ascending limit height H1.

Further, in this example, the elevating operation unit 112 may be configured as follows. That is, in the first mode, the elevating operation unit (up / down switch, lowering switch) that raises / lowers the upper frame 40 and the straw frame 50, and in the second mode, the elevating / lowering operation unit (up / down switch, A lowering switch) and an raising / lowering operation unit (upward switch, lowering switch) for raising / lowering the straw exhaust frame 50 in the second mode may be provided.

[Another Embodiment]
(1) In the above embodiment, the outer lock mechanism 100 is adopted. Instead of this, the outer lock mechanism 200 may be adopted.

As shown in FIGS. 32 and 33, the outer locking mechanism 200 includes an outer hook 201, an outer hook arm 202, an outer hook spring 203, and an outer hook pin 102. The outer hook 201 is swingably supported on the rear surface portion of the rear stay 111 via the support shaft 204. An outer hook spring 203 for urging the outer hook 201 so as to swing toward the engaging side is provided over the outer hook 201 and the rear surface portion of the rear stay 111. The outer hook arm 202 is fixed to the rear end of the link rod 109. An opening 201a is formed in the outer hook 201. The outer hook arm 202 is provided with a pin 202a projecting rearward. The pin 202a is located within the opening 201a. According to such a configuration, the outer hook pin 102 swings to the engaging side by engaging the outer hook arm 202 with the opening 201a via the pin 202a. At that time, the urging force of the outer hook spring 203 enables the outer hook 201 to be quickly engaged with the outer hook pin 102.

(2) In the above embodiment, a step portion 66a is formed on the base end frame 66. However, as shown in FIG. 34, the base end frame 66 may not have a portion corresponding to the step portion 66a. In this case, since the vertical position of the inner hook 93 is higher than that of the above embodiment, the vertical position of the inner hook pin 94 may be higher than that of the above embodiment.

(3) In the above embodiment, if the switching plate 29a is in the open state (cutting position), the straw frame 50 rises after the switching plate 29a is switched to the closed state (non-cutting position). You may try to do it. Further, when the straw exhaust frame 50 is raised, the switching plate 29a may not be switched to the open state (cutting position state).

(4) In the above embodiment, the connecting mechanism 87 extends over the upper portion of the front-rear facing frame 36L on the left side and the upper portion of the free end frame 69. However, instead of this, the connecting mechanism 87 may extend to the lower part of the front-rear facing frame 36L on the left side and the lower part of the free end frame 69.

(5) In the above embodiment, the connecting mechanism 87 can be disconnected from the left front / rear facing frame 36L and the free end frame 69, respectively. However, instead of this, the connecting mechanism 87 may be able to disconnect from either the front-rear frame 36L on the left side or the free end frame 69.

(6) In the above embodiment, the connecting mechanism 87 connects the left front-rear facing frame 36L and the free end frame 69 so as to be disconnectable. However, instead of this, the connecting mechanism 87 may connect the portion of the upper frame 40 other than the front-rear frame 36L on the left side and the portion of the straw frame 50 other than the free end frame 69 so as to be disconnected. ..

(7) In the above embodiment, the handling cylinder 11 together with the upper frame 40 can be swung upward by the hydraulic cylinder 41. However, instead of this, only the upper frame 40 may be able to swing upward by the hydraulic cylinder 41.

(8) In the above embodiment, the connecting mechanism 87 has a bolt type (bolt 91) connecting structure. However, instead of this, the connecting mechanism 87 may have a one-touch type connecting structure using a lever or the like.

The present invention can be used not only for a combine with a cabin but also for a combine without a cabin.

9 Feed chain 10 Threshing device 11 Handling body 12 Straw transport device 36L Front-rear frame 37 Rear frame 38 Top cover 40 Top frame 41 Hydraulic cylinder (actuator)
50 Straw frame 67 Front frame (horizontal frame)
68 Rear frame (horizontal frame)
69 Free end frame (outer frame)
87 Connection mechanism Y2 Swing axis

Claims (7)

A feed chain that holds and transports the harvested culm,
A threshing device that threshes the harvested culms transported by the feed chain with a handling barrel.
It is a combine that is continuously installed on the rear side of the threshing device and is provided with a straw transporting device that receives the straw after the threshing process from the feed chain and sandwiches and transports the straw to the rear.
An upper frame that can swing up and down around the swing axis extending in the front-back direction of the aircraft,
The swing axis extends between a lowering position in which the straw transporting device supports the straw transporting device and the straw transporting device transports the straw and an ascending position in which the straw transporting device does not transport the straw. It is equipped with a straw frame that can swing up and down around it.
The straw transporting device is provided so as to intersect the swing axis in a plan view.
The portion of the straw transporting device located on the transport start end side and the portion located on the transport end side with respect to the swing axis can swing up and down around the swing axis together with the straw frame. Combines that are configured. The combine according to claim 1, further comprising an actuator that swings the upper frame upward. The combine according to claim 1 or 2, wherein the upper frame and the straw exhaust frame are configured to swing up and down independently of each other. The combine according to any one of claims 1 to 3, wherein the ascending limit height of the upper frame and the ascending limit height of the straw-exhausting frame are set to different ascending limit heights. The combine according to claim 4, wherein the ascending limit height of the upper frame is set at a position higher than the ascending limit height of the straw-exhausting frame. The combine according to any one of claims 1 to 3, wherein the straw frame is configured to be able to rise to the same rise limit height as the upper frame. The combine according to any one of claims 1 to 6, further comprising an actuator for swinging the straw frame upward.

Images