JP2022006500A - combine - Google Patents

Abstract

To provide such a combine that the front of a cover hardly enters a gap between a rear wall part of a sieve case and a forward end of a guide member.SOLUTION: A combine includes a flexible cover 57 extending rearward through the lower side of a swing drive shaft 34 from a rear wall part 32b of a sieve case 32, and a guide member 62 provided under the cover 57, for guiding the cover 57. The guide member 62 is extended forward with respect to a shaft center X2 of the swing drive shaft 34.SELECTED DRAWING: Figure 3

Description

The present invention relates to a combine.

Conventionally, as a combine, for example, the combine described in Patent Document 1 is known. The combine described in Patent Document 1 has a threshing section for threshing cut grain culms and a swing sorting device (“sorting device [25]” in the document) which is provided below the threshing section and swings and sorts grains. And a straw culm cutting device (“stem culm shredding device [4]” in the literature) that is provided behind the threshing section and cuts the straw. The swing sorting device is provided with a sheave case and a swing drive mechanism for swinging the sheave case. The swing drive mechanism is provided behind the sheave case and includes a swing drive shaft through which a driving force for driving the swing drive mechanism is transmitted.

Japanese Unexamined Patent Publication No. 2011-206024

Here, in the combine as described above, there is a combine provided with a flexible cover extending rearward from the rear wall portion of the sheave case through the lower part of the swing drive shaft. In this case, in the combine described in Patent Document 1, the straw debris from the straw cutting device and the threshing device collects on the front portion of the cover, and the cover is swung driven by the sheave case. There is a concern that it may enter the gap between the rear wall portion and the front end portion of the guide member (“cover plate [51]” in the literature).

In view of the above situation, there is a demand for a combine in which the front portion of the cover does not easily enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

The features of the present invention are a threshing section for threshing harvested grain culms, a swing sorting device provided below the threshing section for rocking and sorting grains, and a swing sorting device provided behind the threshing section for straw removal. The swing sorting device includes a sheave case and a swing drive mechanism for swinging the sheave case, and the swing driving mechanism includes the sheave case. A combine having a swing drive shaft for transmitting a driving force for driving the swing drive mechanism, which is provided behind the culm and has a swing drive shaft from the rear wall portion of the sheave case. A flexible cover extending rearward through the lower portion and a guide member provided below the cover to guide the cover are provided, and the guide member is located below the axis of the swing drive shaft. It extends to the front side.

According to this feature configuration, the gap between the rear wall portion of the sheave case and the front end portion of the guide member is narrowed. As a result, straw debris from the straw cutting device and the threshing device collects on the front part of the cover, and as the sheave case is oscillated, the front part of the cover becomes the rear wall part of the sheave case and the guide member. Even if an attempt is made to enter the gap between the front end portion and the front end portion of the cover, it becomes difficult for the front portion of the cover to enter the gap between the rear wall portion of the sheave case and the front end portion between the guide member.

Further, in the present invention, the front end portion of the guide member is partitioned by the rear wall portion and a virtual line extending parallel to the rear wall portion and passing through the axis of the swing drive shaft in a side view. It is preferable that it is located in the range where it is used.

According to this feature configuration, the gap between the rear wall portion of the sheave case and the front end portion of the guide member becomes narrower. This makes it more difficult for the front portion of the cover to enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

Further, in the present invention, it is preferable that an inclined portion inclined forward upward is formed in a portion of the guide member on the front side of the axis of the swing drive shaft.

According to this feature configuration, even if the front portion of the cover tries to enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member, it is blocked by the inclined portion. This makes it more difficult for the front portion of the cover to enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

Further, in the present invention, a second collecting unit is provided below the rocking sorting device and collects the second grain, and the second collecting unit collects the second grain in the left-right direction of the machine. The inclined portion or the extension line of the inclined portion intersects the rotation axis of the second screw and the virtual line passing through the axis of the swing drive shaft in a side view. It is preferable to have it.

According to this feature configuration, the inclined portion approaches the inside of the second recovery portion. As a result, it becomes difficult for the front portion of the cover to enter the inside of the second recovery portion through the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

Further, in the present invention, it is preferable that the inclined portion extends to the front side of the virtual line passing through the rotation axis of the second screw and the axis of the swing drive shaft in a side view.

According to this feature configuration, the inclined portion is closer to the inside of the second recovery portion. As a result, the front portion of the cover is less likely to enter the inside of the second recovery portion through the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

Further, in the present invention, it is preferable that a bent portion that bends downward is formed at the front end portion of the inclined portion.

According to this feature configuration, the front end portion of the inclined portion is bent downward. As a result, even if the cover comes into contact with the front end portion of the inclined portion, the cover is less likely to be caught by the front end portion of the inclined portion.

Further, in the present invention, the swing drive shaft is configured to rotate eccentrically, and the guide member is located in front of the front end of the trajectory of the axis of the swing drive shaft that rotates eccentrically in a side view. It is preferable that it extends to.

According to this feature configuration, the gap between the rear wall portion of the sheave case and the front end portion of the guide member becomes narrower. As a result, even if the front portion of the cover is pushed into the gap between the rear wall portion of the sheave case and the front end portion of the guide member by the rocking drive shaft that rotates eccentrically, the front portion of the cover is the rear wall of the sheave case. It becomes more difficult to enter the gap between the portion and the front end portion between the guide member.

Further, in the present invention, it is preferable that a fuel tank is provided below the guide member, and the guide member covers the fuel tank from above.

According to this feature configuration, the fuel tank can be protected by the guide member.

Further, in the present invention, it is preferable that a recessed portion is formed in a portion of the guide member located below the swing drive shaft so as to be recessed downward in a side view.

According to this feature configuration, when the cover is placed on the recessed portion, the cover is recessed downward along the recessed portion. As a result, the cover can be held in position so that the front portion of the cover does not enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

Further, in the present invention, it is preferable that the guide member extends forward to a position overlapping the front-rear range of the portion of the cover attached to the rear wall portion in a side view.

According to this feature configuration, the gap between the rear wall portion of the sheave case and the front end portion of the guide member becomes narrower. This makes it more difficult for the front portion of the cover to enter the gap between the rear wall portion of the sheave case and the front end portion of the guide member.

It is a left side view which shows a combine. It is a left side sectional view which shows the threshing apparatus. It is a left side sectional view which shows the rear part of a threshing apparatus. It is a left side sectional view which shows the guide member and the peripheral structure thereof.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is "front of the aircraft", the direction of arrow B is "rear of the aircraft", the direction on the left side of the direction of arrow F is "left of the aircraft", and arrow F. The direction on the right side of the direction is "the right side of the aircraft".

[Overall composition of combine harvester]
FIG. 1 shows a head-feeding combine. The combine is provided with a traveling machine 1. The traveling machine body 1 is provided with a machine body frame 2 and a crawler traveling device 3 for supporting the machine body frame 2. In front of the traveling machine 1, a cutting section 4 for cutting planted culms is provided. A driving unit 5 is provided on the front portion of the traveling machine body 1. An engine E is provided below the driving unit 5.

A threshing device 6 is provided behind the cutting unit 4 to thresh the cut grain culms and sort the threshed products. A feed chain 7 for transporting the harvested culm is provided on the left side of the threshing device 6. The threshing device 6 is arranged on the left side of the traveling machine 1. A grain storage tank 8 for storing grains is provided on the right side of the threshing device 6. The threshing device 6 and the grain storage tank 8 are supported by the machine frame 2. A grain discharge device 9 for discharging grains in the grain storage tank 8 is connected to the grain storage tank 8. A straw transporting device 17 for transporting straw is provided at the rear of the threshing device 6. A straw cutting device 18 for cutting straw is provided behind the threshing device 6. A fuel tank 19 is provided at the rear end of the fuselage frame 2.

[Threshing device]
As shown in FIGS. 2 and 3, the threshing device 6 is provided with a threshing unit 10 for threshing the harvested culm and a sorting unit 11 provided below the threshing unit 10 for sorting the threshed product. ing. The threshing section 10 includes a handling cylinder 12 that can rotate around a rotation axis Y1 extending along the front-rear direction of the machine, a handling chamber 13 that accommodates the handling cylinder 12, and a receiving net 14 provided around the handling cylinder 12. A separation drum 15 that separates the cut straw and grains while diffusing the threshed product, and a dust exhaust fan 16 that discharges dust to the outside are provided.

The sorting unit 11 includes a swing sorting device 21 that swings and sorts grains, a main wall insert 22 that blows sorting air to a region (fine sorting region) on the lower side of the swing sorting device 21, and a swing sorting device. The secondary wall insert 29 that blows the sorting air to the upper region (coarse sorting region) in 21, the first collection unit 23 that collects the first grain (single grain, etc.), and the second one. A second collection unit 24 for collecting grains (grains with wall inserts, etc.) is provided.

The shaking sorting device 21 includes a sheave case 32, a first grain pan 35 for rough sorting, a plurality of first sieve lines 36, a second grain pan 37 for rough sorting, and a plurality of second sieve lines 38. A chaff sheave 39 for rough sorting, a straw rack 40 for rough sorting, a guide plate 41, a grain sheave 42 for fine sorting, and a swing drive mechanism 33 are provided.
There is.

The sheave case 32 contains a first grain pan 35, a first sieve line 36, a second grain pan 37, a second sieve wire 38, a chaff sheave 39, a straw rack 40, a guide plate 41, and a grain sheave 42. The sheave case 32 is configured to be swingable with the front portion as a fulcrum (fulcrum 32a). A rear wall portion 32b that is inclined backward is formed at the rear portion of the sheave case 32.

The first Glenpan 35 is provided in front of the rough sorting region of the sheave case 32. The first Glenpan 35 is configured to perform specific gravity sorting while transferring the sorting object leaking from the front portion of the receiving net 14 to the rear.

The first sieve line 36 extends rearwardly and upwardly from the rear end portion of the first Glenpan 35, and is provided at intervals in the left-right direction of the machine body. The first sieving line 36 is configured to supply the front part of the chaff sheave 39 while unraveling the sorting object from the first Glenpan 35.

The second Glenpan 37 is provided below the rear end portion of the handling cylinder 12 in the rear portion of the rough sorting region of the sheave case 32. The second Glenpan 37 is configured to perform specific gravity sorting while transferring the sorting object from the rear end portion of the handling chamber 13 to the rear.

The second sieve line 38 extends rearward from the rear end portion of the second Glenpan 37, and is provided at intervals in the left-right direction of the machine body. The second sieving line 38 is configured to supply the rear part of the chaff sheave 39 and the straw rack 40 while unraveling the object to be sorted from the second Glenpan 37.

The chaff sheave 39 is provided below the rear of the first Glen pan 35 in the rough sorting region of the sheave case 32. The chaff sheave 39 is configured to sieve and sort the objects to be sorted from the first sieve line 36, the objects to be sorted leaked from the rear of the receiving net 14, and the objects to be sorted from the second sieve line 38. Has been done.

The straw rack 40 is provided behind the chaff sheave 39 in the rear part of the rough sorting region of the sheave case 32. The straw rack 40 is configured to sieve and sort the object to be sorted from the second sieve line 38 and the object to be sorted from the chaf sheave 39 while transferring them backward.

The guide plate 41 is provided at the front portion of the fine sorting region of the sheave case 32. The guide plate 41 is configured to guide the sorting object leaking from the front portion of the chaf sheave 39 toward the rear lower part.

The grain sheave 42 is provided at the rear of the fine sorting region of the sheave case 32. The Glen Sheave 42 is configured to sieve and sort the sorting object leaked from the chaff sheave 39 and the sorting target from the guide plate 41 while transferring them backward.

The swing drive mechanism 33 is configured to swing drive the sheave case 32. The swing drive mechanism 33 is provided behind the sheave case 32. The swing drive mechanism 33 includes a swing drive shaft 34 to which a driving force for driving the swing drive mechanism 33 is transmitted, and left and right swing arms that interlock and connect the swing drive shaft 34 and the sheave case 32. 43 and are provided.

The swing drive shaft 34 is configured to rotate eccentrically. The swing drive shaft 34 is provided over the left and right rotation shaft portions 34a that can rotate around the rotation axis X1 extending along the left-right direction of the machine and the left and right rotation shaft portions 34a with respect to the rotation axis X1. An eccentric shaft portion 34b having an eccentric shaft center X2 located eccentrically is provided. The swing arm 43 is provided over the lateral portion of the sheave case 32 and the lateral end portion of the eccentric shaft portion 34b. The left and right rotating shaft portions 34a rotate around the rotating shaft center X1 and the eccentric shaft portion 34b rotates eccentrically with respect to the rotating shaft center X1, so that the rotational force of the eccentric shaft portion 34b causes the left and right swing arms 43. It is transmitted to the sheave case 32 via the sheave case 32, and the sheave case 32 is oscillated.

The first collection unit 23 is provided below the grain receive 42. The first collection unit 23 is provided with the first screw 25 for transporting the grain of the first grain to the right. A grain raising device 26 for frying the grain of the first grain from the first screw 25 toward the grain storage tank 8 is connected to the right end portion of the first collecting section 23.

The second recovery unit 24 is provided below the straw rack 40. The second collection unit 24 is provided with a second screw 27 for transporting the grain of the second product to the right. A second reduction device 28 for reducing the grain of the second product from the second screw 27 to the rocking sorting device 21 is connected to the right end portion of the second recovery unit 24.

[Straw cutting device]
As shown in FIGS. 2 and 3, the straw-removing cutting device 18 is provided behind the threshing section 10. The straw cutting device 18 is provided with a cutter case 44, a cutter 45, and a diffusion device 46.

The cutter case 44 contains the cutter 45 and the diffuser 46. An input port 44a into which straw is discharged is formed on the upper surface of the cutter case 44. The cutter case 44 is provided with a front cover 47 and a switching cover 48.

The front cover 47 is configured to cover the cutter 45 from the front. The front cover 47 extends downward from the front end portion of the upper surface portion of the cutter case 44. The vertical length of the front cover 47 is set short so as not to obstruct the flow W of the exhaust air from the dust exhaust fan 16.

The switching cover 48 is configured to be swingable over an open position where the slot 44a is opened and a closed position where the slot 44a is closed around the swing axis X3 extending along the left-right direction of the machine body. When the switching cover 48 is in the open position, the straw discharged from the straw discharging device 17 is charged into the charging port 44a and cut by the cutter 45. When the switching cover 48 is in the closed position, the straw discharged from the straw discharging transport device 17 slides on the upper surface of the switching cover 48 and falls to the ground.

The cutter 45 is configured to cut the straw thrown into the throwing port 44a. The cutter 45 is provided with a cutting portion 49 and a supply portion 50.

The cutting portion 49 is provided with a cutting shaft 51 and a plurality of cutting blades 52. The cutting shaft 51 is configured to be rotatable around a rotation axis X4 extending along the left-right direction of the machine body. The cutting shaft 51 is configured so that the power from the threshing device 6 is transmitted by a belt transmission mechanism (not shown). The plurality of cutting blades 52 are provided on the cutting shaft 51 at intervals in the rotation axis X4 direction.

The supply unit 50 is provided with a supply shaft 53 and a plurality of scraping blades 54. The supply shaft 53 is configured to be rotatable around a rotation axis X5 extending along the left-right direction of the machine body. The supply shaft 53 is configured to transmit the power of the cutting shaft 51 by a chain transmission mechanism (not shown). The plurality of scraping blades 54 are provided on the supply shaft 53 at intervals in the rotation axis X5 direction.

The diffusion device 46 is configured to diffuse the straw discharged after cutting by the cutter 45 in the left-right direction of the machine body and discharge it to the field. The diffusion device 46 is provided with a diffusion auger 55 that can rotate around a rotation axis X6 extending along the left-right direction of the machine.

[Fuel tank]
As shown in FIGS. 2 and 3, the fuel tank 19 is arranged below the rear end of the sheave case 32. Specifically, the fuel tank 19 is arranged below the swing drive shaft 34 in a state where the front end portion of the fuel tank 19 enters below the second recovery unit 24. The bottom portion of the fuel tank 19 protrudes below the lower end of the fuselage frame 2.

The fuel tank 19 has a width similar to the width of the sheave case 32. The fuel tank 19 is supported by the rear end portion of the airframe frame 2 in a state of being placed in a box-shaped tank case 56 that opens upward.

〔cover〕
As shown in FIGS. 2 and 3, a first cover 57 (corresponding to the “cover” according to the present invention) extending rearward from the rear wall portion 32b of the sheave case 32 through the lower part of the swing drive shaft 34 is provided. ing. The first cover 57 extends rearward from the rear wall portion 32b of the sheave case 32 to a position corresponding to the rear end portion of the fuel tank 19 through the lower part of the swing drive shaft 34.

The first cover 57 closes the gap below the rear wall portion 32b of the sheave case 32 so that the straw debris from the straw cutting device 18 and the threshing device 6 does not enter the inside of the sorting portion 11. The first cover 57 is composed of a flexible sheet-like cover. The first cover 57 has a width similar to the width of the sheave case 32. The front end of the first cover 57 is supported by the stay 58. The stay 58 is fixed to the rear wall portion 32b of the sheave case 32. The front end portion of the first cover 57 is fixed to the stay 58 by bolts 59.

A second cover 60 extending downward from the rear end of the sheave case 32 through the rear of the swing drive shaft 34 is provided. The second cover 60 is arranged above the first cover 57. The second cover 60 extends rearwardly and downwardly from the rear end portion of the sheave case 32 to a position corresponding to the rear end portion of the fuel tank 19 through the rear of the swing drive shaft 34.

The second cover 60 closes the gap below the rear end of the sheave case 32 so that the straw debris from the straw cutting device 18 and the threshing device 6 does not enter the inside of the sorting unit 11. The second cover 60 is composed of a flexible sheet-like cover. The second cover 60 has a width similar to the width of the sheave case 32. The upper end portion of the second cover 60 is fixed to the rear end portion of the sheave case 32 by a bolt 61.

[Guide member]
As shown in FIGS. 3 and 4, a guide member 62 for guiding the first cover 57 and the second cover 60 is provided below the first cover 57 and the second cover 60. The guide member 62 is provided between the first cover 57 and the fuel tank 19. The guide member 62 covers the fuel tank 19 from above. That is, the fuel tank 19 is provided below the guide member 62. The guide member 62 has a width similar to the width of the fuel tank 19.

The guide member 62 extends to the front side of the eccentric axis X2 of the swing drive shaft 34. Specifically, the guide member 62 is the front end of the locus T of the eccentric axis X2 of the swing drive shaft 34 that rotates eccentrically in the side view (the eccentric axis X2 of the swing drive shaft 34 in FIGS. 3 and 4). It extends to the front side from the position of). The guide member 62 extends rearward from a position on the front side of the eccentric axis X2 of the swing drive shaft 34 to a position corresponding to the rear end portion of the fuel tank 19.

In FIGS. 3 and 4, the eccentric axis X2 is in a state where the sheave case 32 (swing drive shaft 34) is located at the initial position (the swing drive mechanism 33 swings the sheave case 32). It is the position in the state without). In the state where the swing drive shaft 34 is located at the initial position, the eccentric shaft center X2 is located on the front side with respect to the rotating shaft center X1 and at substantially the same height as the rotating shaft center X1. There is.

The guide member 62 is composed of a plate-shaped member. The guide member 62 is provided with a first inclined portion 62a (corresponding to the “inclined portion” according to the present invention), a second inclined portion 62b, a horizontal portion 62c, and a third inclined portion 62d. In the guide member 62, the first inclined portion 62a, the second inclined portion 62b, the horizontal portion 62c, and the third inclined portion 62d are provided in this order from the front side. The horizontal portion 62c is formed horizontally or substantially horizontally.

The first inclined portion 62a is formed so as to incline forward. The first inclined portion 62a is formed in a portion of the guide member 62 on the front side of the eccentric axis X2 of the swing drive shaft 34. A bent portion 62e that bends downward is formed at the front end portion of the first inclined portion 62a. There is a gap G in the front-rear direction between the bent portion 62e and the rear wall portion 32b of the sheave case 32. The gap G is set so that the rear wall portion 32b of the sheave case 32 does not interfere with the front end portion of the guide member 62 when the sheave case 32 is oscillated.

Here, the second screw 27 is configured to be rotatable around a rotation axis X7 extending along the left-right direction of the machine body. In FIGS. 3 and 4, a virtual line (hereinafter referred to as “first virtual line”) passing through the rotation axis X7 of the second screw 27 and the eccentric axis X2 of the swing drive shaft 34 is indicated by L1 and is a sheave case 32. A virtual line (hereinafter referred to as “second virtual line”) extending parallel to the rear wall portion 32b and passing through the eccentric axis X2 of the swing drive shaft 34 is indicated by L2.

The first inclined portion 62a extends to the front side of the first virtual line L1 in a side view. That is, the first inclined portion 62a intersects the first virtual line L1 in the side view. In other words, the front end portion of the guide member 62 is located in the range A defined by the rear wall portion 32b of the sheave case 32 and the second virtual line L2 in the side view.

The front end portion of the first inclined portion 62a is located below the front end portion of the first cover 57. That is, the guide member 62 is moved forward to a position overlapping the front-rear range of the portion of the first cover 57 of the first cover 57 that is attached to the rear wall portion 32b of the sheave case 32 (the portion fixed to the stay 58 by the bolt 59). It is extended.

The second inclined portion 62b is formed so as to incline forward. The connection portion between the rear end portion of the first inclined portion 62a and the front end portion of the second inclined portion 62b is located below the swing drive shaft 34. That is, a recessed portion 62f that is recessed downward in a side view is formed in a portion of the guide member 62 that is located below the swing drive shaft 34. The portion of the first cover 57 located above the recessed portion 62f is recessed downward along the recessed portion 62f.

The third inclined portion 62d is formed so as to incline backward. The third inclined portion 62d extends rearward to a position corresponding to the rear end portion of the fuel tank 19. At the rear end of the third inclined portion 62d, a bent portion 62 g that bends downward is formed. At the lower end of the bent portion 62 g, a bent portion 62h that bends forward is formed.

According to such a configuration, the gap G between the rear wall portion 32b of the sheave case 32 and the front end portion of the guide member 62 is narrowed. As a result, the straw debris from the straw cutting device 18 and the threshing device 6 collects in the front part of the first cover 57, and the sheave case 32 is oscillated, so that the front part of the first cover 57 is moved. Even if an attempt is made to enter the gap G between the rear wall portion 32b of the sheave case 32 and the front end portion of the guide member 62 (in particular, the front portion of the first cover 57 is rearward to the sheave case 32 due to the eccentric rotation drive shaft 34. Even if the front end of the first cover 57 is pushed into the gap G between the wall portion 32b and the front end portion of the guide member 62), the front portion of the first cover 57 is the gap G between the rear wall portion 32b of the sheave case 32 and the front end portion of the guide member 62. It becomes difficult to enter the inside of the second recovery portion 24 from the gap G between the rear wall portion 32b of the sheave case 32 and the front end portion of the guide member 62.

[Another Embodiment]
(1) In the above embodiment, the front end portion of the guide member 62 is located in the range A defined by the rear wall portion 32b of the sheave case 32 and the second virtual line L2 in the side view. However, the front end portion of the guide member 62 does not have to be located in the range A partitioned by the rear wall portion 32b of the sheave case 32 and the second virtual line L2 in the side view.

(2) In the above embodiment, a first inclined portion 62a that inclines forward is formed in a portion of the guide member 62 on the front side of the eccentric axis X2 of the swing drive shaft 34. However, the first inclined portion 62a that inclines forward may not be formed in the portion of the guide member 62 on the front side of the eccentric axis X2 of the swing drive shaft 34. For example, an inclined portion that inclines downward may be formed in a portion of the guide member 62 on the front side of the eccentric axis X2 of the swing drive shaft 34. Alternatively, the portion of the guide member 62 on the front side of the eccentric axis X2 of the swing drive shaft 34 may be a horizontal portion.

(3) In the above embodiment, the first inclined portion 62a intersects the first virtual line L1 in a side view. That is, the first inclined portion 62a extends to the front side of the first virtual line L1 in the side view. However, the first inclined portion 62a may not intersect the first virtual line L1 in the side view, and the extension line of the first inclined portion 62a may intersect the first virtual line L1 in the side view. That is, the first inclined portion 62a does not have to extend to the front side of the first virtual line L1 in the side view.

(4) In the above embodiment, a bent portion 62e that bends downward is formed at the front end portion of the first inclined portion 62a. However, the bent portion 62e that bends downward may not be formed at the front end portion of the first inclined portion 62a.

(5) In the above embodiment, the fuel tank 19 is provided below the guide member 62. However, another object may be provided below the guide member 62 in place of the fuel tank 19.

(6) In the above embodiment, a recessed portion 62f is formed in a portion of the guide member 62 located below the swing drive shaft 34 so as to be recessed downward in a side view. However, the recessed portion 62f that is recessed downward in the side view may not be formed in the portion of the guide member 62 that is located below the swing drive shaft 34. For example, a protruding portion may be formed in a portion of the guide member 62 located below the swing drive shaft 34 so as to project upward in a side view. Alternatively, the portion of the guide member 62 located below the swing drive shaft 34 may be a horizontal portion.

(7) In the above embodiment, the guide member 62 extends forward to a position overlapping the front-rear range of the portion of the first cover 57 attached to the rear wall portion 32b of the sheave case 32 when viewed from the side. However, the guide member 62 does not have to extend forward to a position overlapping the front-rear range of the portion of the first cover 57 that is attached to the rear wall portion 32b of the sheave case 32 when viewed from the side.

The present invention can be used not only for head-feeding combine harvesters but also for head-feeding combine harvesters.

10 Threshing part 18 Straw cutting device 19 Fuel tank 21 Swing sorting device 24 No. 2 recovery part 27 No. 2 screw 32 Sheave case 32b Sheave case rear wall part 33 Swing drive mechanism 34 Swing drive shaft 57 First cover ( cover)
62 Guide member 62a First inclined part (tilted part)
62e Bent part 62f Indented part A Range L1 First virtual line (virtual line)
L2 second virtual line (virtual line)
T locus X2 Shaft drive shaft axis X7 Second screw rotation axis

Claims (10)

The threshing department that threshes the harvested culm,
A rocking sorting device provided below the threshing section for rocking and sorting grains,
A straw cutting device provided behind the threshing section for cutting straw is provided.
The swing sorting device includes a sheave case and a swing drive mechanism for swinging the sheave case.
The swing drive mechanism is a combine provided behind the sheave case and has a swing drive shaft through which a driving force for driving the swing drive mechanism is transmitted.
A flexible cover that extends rearward from the rear wall of the sheave case through below the rocking drive shaft.
A guide member provided below the cover and guiding the cover is provided.
The guide member is a combine that extends to the front side of the axis of the swing drive shaft. The front end portion of the guide member is located in a range defined by the rear wall portion and a virtual line extending parallel to the rear wall portion and passing through the axis of the swing drive shaft in a side view. The combine according to claim 1. The combine according to claim 1 or 2, wherein an inclined portion inclined forward upward is formed in a portion of the guide member on the front side of the axis of the swing drive shaft. It is provided below the rocking sorting device and is provided with a second collecting unit for collecting grains of the second product.
The second collection unit has a second screw that transports the grain of the second product in the left-right direction of the machine.
The combine according to claim 3, wherein the inclined portion or an extension line of the inclined portion intersects a virtual line passing through the rotation axis of the second screw and the axis of the swing drive shaft in a side view. The combine according to claim 4, wherein the inclined portion extends to the front side of a virtual line passing through the rotation axis of the second screw and the axis of the swing drive shaft in a side view. The combine according to claim 4 or 5, wherein a bent portion that bends downward is formed at the front end portion of the inclined portion. The swing drive shaft is configured to rotate eccentrically.
The combine according to any one of claims 1 to 6, wherein the guide member extends to the front side of the front end of the locus of the axial center of the swing drive shaft that rotates eccentrically in a side view. A fuel tank is provided below the guide member.
The combine according to any one of claims 1 to 7, wherein the guide member covers the fuel tank from above. The combine according to any one of claims 1 to 8, wherein a recessed portion is formed in a portion of the guide member located below the swing drive shaft so as to be recessed downward in a side view. The combine according to any one of claims 1 to 9, wherein the guide member extends forward to a position overlapping the front-rear range of a portion of the cover attached to the rear wall portion in a side view.

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