combine

Abstract

To provide a combine-harvester which can reduce vibration generated in a grass-dividing guide and suppress breakage of the grass-dividing guide due to the vibration.SOLUTION: A reaping unit 4 comprises: a plurality of grass-dividing tools 9 which is provided on a tip of a lower part of the reaping unit 4 and divides plant foot side portions of planted grain culm; a plurality of raising devices which is arrayed along a machine body left-right direction and raises the planted grain culm divided by the grass-dividing tools 9; a grass-dividing guide 40 which extends to a height higher than ear tips of the planted grain culm from a height lower than ear tips of the planted grain culm at the machine body left-right direction position corresponding to the grass-dividing tool 9 and acts on the planted grain culm prior to the raising devices to divide the ear tip side portions of the planted grain culm; and a support frame 25 which extends along the machine body left-right direction so as to reach upper parts of the plurality of raising devices and supports the plurality of raising devices. An upper end part of the grass-dividing guide 40 is connected to the support frame 25.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a combine harvester. [Background technology]

[0002] Conventional combine harvesters, for example as described in Patent Document 1, include a weed dividing tool that divides the base side of the planted culm, and a weed dividing guide that divides the tip side of the planted culm to the left and right. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-141017 A Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, the front end of the rod-shaped frame is prone to large vibrations caused by engine drive, mowing work, etc. In addition, as described in Patent Document 1, in conventional combine harvesters, a grass dividing guide was supported on the front end of a rod-shaped grass dividing support frame extending forward at the front end side of the mowing section. The grass dividing guide supported on the front end of the grass dividing support frame was prone to large vibrations, and there was a risk that the grass dividing guide would be damaged by these vibrations.

[0005] In view of the above problems, the present invention aims to provide a combine that can reduce vibrations generated in the grass dividing guide and make it less likely for the grass dividing guide to be damaged by vibrations. [Means for solving the problem]

[0006] The combine harvester of the present invention is a combine harvester equipped with a harvesting section that harvests planted culms, and the harvesting section is equipped with a plurality of weed-dividing tools that are provided at the tip of the lower part of the harvesting section and divide the base side part of the planted culms, a plurality of raising devices that are arranged along the left-right direction of the machine body and raise the planted culms that have been divided by the weed-dividing tools, a grass-dividing guide that extends from a height lower than the tip of the planted culms to a height higher than the tip of the planted culms at a left-right position of the machine body corresponding to the grass-dividing tools, and acts on the planted culms before the raising devices to divide the tip side part of the planted culms to the left and right, and a support frame that extends along the left-right direction of the machine body so as to span the upper part of the plurality of raising devices and supports the plurality of raising devices, and the upper end of the grass-dividing guide is connected to the support frame. The plurality of lifting devices are configured to extend in a direction along a lifting path through which the planted stalks pass, and have a lifting cover that covers at least a part of the plurality of lifting devices. The grass dividing guide overlaps with an edge of the lifting cover on the lifting path side in a front view, and is connected to the support frame above the lifting path. .

[0007] According to this invention, the grass dividing guide is connected to a support frame that is firmly constructed to support multiple lifting devices. Generally, a firmly constructed support frame is unlikely to experience large vibrations caused by engine operation, mowing work, etc. A grass dividing guide connected to such a support frame is unlikely to experience large vibrations. As a result, the grass dividing guide is unlikely to be damaged by vibrations.

[0008] In the present invention, the planted stalk passes through the raising device. The above It is preferable that the device be provided with a plurality of raising claws that move upward along the raising path to raise the planted culms, and that the upper part of the grass dividing guide be provided with an inclined guide section that is inclined so that the upper side is positioned closer to the raising path when viewed from the front.

[0009] According to this configuration, the inclined guide portion is inclined so that the upper side is located closer to the raising path, so that the portion of the grass dividing guide below the inclined guide portion is positioned away from the raising path. As a result, the planted culms divided by the grass dividing guide are guided to a position away from the raising path, so that the tips of the planted culms can be prevented from entering the raising path.

[0010] In the present invention, it is preferable that the inclined guide portion overlaps with the raising path in a front view.

[0011] With this configuration, the inclined guide section can be positioned toward the support frame by utilizing the raising path, i.e., the space through which the planted culms pass, eliminating the need for design changes to connect the grass dividing guide to the support frame.

[0012] In the present invention, the lifting device is provided with an upper rotating body provided on the upper part of the lifting device, a lower rotating body provided on the lower part of the lifting device, and a lifting chain wound around the upper rotating body and the lower rotating body and having the multiple lifting claws attached, and it is preferable that the inclined guide portion overlaps with the lifting path above the rotation axis of the upper rotating body when viewed from the front.

[0013] According to this configuration, the inclined guide portion overlaps with the lifting path above the rotation axis of the upper rotating body around which the lifting chain is wound, so that the inclined guide portion is located above the range of the lifting action of the lifting claws in the lifting path. As a result, it is possible to reduce the collision of the planted stalks lifted by the lifting device with the inclined guide portion.

[0014] In the present invention, it is preferable that the grass dividing guide is provided with a vertical guide portion which extends upward from a height lower than the tip of the planted culm when viewed from the front, at a left-right position of the machine body corresponding to the grass dividing tool, and that the lower end of the inclined guide portion is connected to the upper end of the vertical guide portion.

[0015] According to this configuration, since the vertical guide portion extends upward from a height lower than the tip of the planted culm, the tip side of the planted culm can be suitably divided to the left and right even when harvesting a short planted culm. Also, since the lower end of the inclined guide portion is connected to the upper end of the vertical guide portion, the inclined guide portion and the vertical guide portion can be constructed from a single member. As a result, it is possible to reduce the installation process compared to when the inclined guide portion and the vertical guide portion are constructed from separate members.

[0016] The combine of the present invention is a combine equipped with a cutting section that cuts planted culms, and the cutting section is provided with a plurality of weed-dividing tools that are provided at the tip of the lower part of the cutting section and divide the base side part of the planted culms, a plurality of raising devices that are arranged along the left-right direction of the machine body and raise the planted culms that have been divided by the weed-dividing tools, a grass-dividing guide that extends from a height lower than the tip of the planted culms to a height higher than the tip of the planted culms at a left-right position of the machine body corresponding to the grass-dividing tools, and acts on the planted culms before the raising devices to divide the tip side part of the planted culms to the left and right, and a support frame that extends along the left-right direction of the machine body so as to span the upper part of the plurality of raising devices and supports the plurality of raising devices, and the upper end of the grass-dividing guide is connected to the support frame, The reaping unit is provided with a cover that covers the support frame from the front, and a portion of the cover located above the raising path through which the planted stalks pass is recessed upward when viewed from the front to form a recess, and the upper end of the grass guide is passed through the range of the recess and connected to the support frame. do.

[0017] this invention According to the present invention, the cover has a recess that recesses upward in the portion corresponding to the raising path, so that even when harvesting tall planted culms, the tips of the planted culms can be prevented from colliding with the cover. Furthermore, the upper end of the grass dividing guide is passed through the recess, so that the upper end of the grass dividing guide can be connected to the support frame using the recess.

[0018] In the present invention, a driving unit is provided behind the cutting unit, and the grass dividing guide is provided with a vertical guide portion which extends upward from a height lower than the tip of the planted culm when viewed from the front, at a left-right position of the machine body corresponding to the grass dividing tool, and it is preferable that the vertical guide portion extends upward from the grass dividing tool.

[0019] With this configuration, the vertical guide portion extends upward from a height lower than the tip of the planted culm, so that the tip side portion of the planted culm can be more suitably weeded to the left and right. Also, because the vertical guide portion of the grass dividing guide extends upward from the grass dividing tool, the operator in the driver's section located behind the cutting section can easily check the left and right position of the grass dividing tool by checking the vertical guide portion.

[0020] In the present invention, it is preferable that the grass dividing tool is formed with a through hole extending vertically therethrough, and the lower end of the vertical guide portion is inserted into the through hole.

[0021] With this configuration, even if the grass dividing tool vibrates due to vibrations from the engine, etc., the vibrations are suppressed by the lower end of the vertical guide part abutting the edge of the through hole. Also, since there is no gap between the grass dividing tool and the grass dividing guide, it is possible to prevent the inconvenience of the planted culms that should be divided by the grass dividing guide passing through the gap and not being guided by the grass dividing guide.

[0022] In the present invention, a grass dividing frame supporting the grass dividing tool is provided at the bottom of the cutting section, the grass dividing tool is supported on the grass dividing frame so that it can swing left and right around a vertical swing axis, and it is preferable that the through hole passes through the grass dividing tool from top to bottom along the swing axis.

[0023] According to this configuration, since the through hole passes through the grass dividing tool vertically along the swing axis, when the swing angle of the grass dividing tool is changed, the through hole rotates without changing its relative position with respect to the swing axis. As a result, it is possible to change the swing angle of the grass dividing tool without interference between the lower end of the grass dividing guide that passes through the through hole and the through hole.

[0024] In the present invention, it is preferable that the grass dividing guide is made of round pipe material, and the lower end of the vertical guide portion is formed into a crushed shape of the round pipe material and inserted into the through hole.

[0025] According to this configuration, the grass dividing guide is constructed robustly from round pipe material, while the lower end of the vertical guide section is formed into a shape obtained by crushing the round pipe material, so that the round pipe material can be constructed smaller than the size of the through hole, and the grass dividing guide can be constructed, for example, from round pipe material having a diameter larger than the diameter of the through hole. As a result, even if the grass dividing guide is constructed from round pipe material with a large diameter in order to increase the strength of the grass dividing guide, there is no need to make design changes such as increasing the diameter of the through hole of the grass dividing tool.

[0026] In the present invention, it is preferable that the grass dividing guide is arranged rearward of the front end of the grass dividing tool.

[0027] With this configuration, the planted culms are smoothly divided from a low position to a higher position by the dividing tool which divides the base side of the planted culms and the dividing guide which divides the tip side of the planted culms. [Brief description of the drawings]

[0028] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a front view showing the configuration of the grass dividing guide. [Diagram 5] FIG. 2 is a left side view showing the front lower part of the reaping unit. [Figure 6] FIG. 2 is a diagram showing the configuration of the main body and support part (adjustment mechanism) of the grass dividing tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of the arrow F in the drawing is "forward", the direction of the arrow B is "backward", the direction of the arrow L is "left", and the direction of the arrow R is "right". Also, the direction of the arrow U in the drawing is "upward", and the direction of the arrow D is "downward".

[0030] [Overall configuration of the combine] 1 to 3 show a head-feeding combine harvester (corresponding to the "combine harvester" according to the present invention). As shown in Figs. 1 to 3, this combine harvester is equipped with a traveling body 1. The traveling body 1 is equipped with a crawler traveling device 2 and a body frame 3 supported by the crawler traveling device 2. A reaping unit 4 that reaps planted culms is provided in front of the traveling body 1. A driver's cabin 5 is provided behind the reaping unit 4.

[0031] [Driver's Cabin] 2 and 3, the driver's cabin 5 is provided with a driver's section 5A in which the driver sits, and a cabin section 5B that covers the driver's section 5A. The driver's section 5A is provided with a driver's seat 28 in which the driver sits.

[0032] An engine (not shown) is provided below the driver's cabin 5. A grain storage tank 6 for storing grains after threshing is provided behind the driver's cabin 5. A threshing device 7 for threshing the harvested stalks from the reaping section 4 is provided behind the reaping section 4. A grain discharge device 8 for discharging the grains in the grain storage tank 6 is connected to the grain storage tank 6.

[0033] [Reaping section] The reaping unit 4 is configured to be able to swing up and down between a lowered working position where the planted culms are reaped and an elevated non-working position where the planted culms are not reaped. In the following description, the case where the reaping unit 4 is in the lowered working position will be described.

[0034] As shown in Figs. 1 to 3, the reaping unit 4 is configured for multiple reaping (seven-row reaping in this embodiment). The reaping unit 4 is provided with multiple (eight in this embodiment) weed-dividing tools 9 that are provided at the tip of the lower part of the reaping unit 4 and divide the base side part of the planted culm, a raising unit 10 that raises the planted culm divided by the weed-dividing tools 9, a cutting blade device 11 that cuts the planted culm raised by the raising unit 10, and a culm transport unit 12 that transports the reaped culm cut by the cutting blade device 11 toward the rear of the machine body. Side covers 13 are provided on both the left and right sides of the reaping unit 4. Each of the weed-dividing tools 9 is supported by a weed-dividing frame 14 provided at the lower part of the reaping unit 4. In the following description, the eight weed-dividing tools 9 are referred to as the first to eighth weed-dividing tools 9 from the left.

[0035] As shown in Fig. 5, the culm transport section 12 has a transport device 60 that grips the base of the harvested culms and transports them backward. The transport device 60 is equipped with a packer 61A for raking in the culms and a belt with protrusions 61B for raking in the culms. The transport device 60 also has a base transport mechanism 62 and a tip transport mechanism 63. The base transport mechanism 62 grips and transports the base of the harvested culms. The tip transport mechanism 63 engages and transports the tips of the harvested culms.

[0036] [Raising part] As shown in Figures 2 to 4, the raising section 10 is equipped with a plurality of (seven in this embodiment) raising devices 16 arranged along the left-right direction of the machine body and raising the planted culms that have been divided by the grass dividing tool 9, a raising drive shaft 17 to which the driving force for raising and driving the raising section 10 is transmitted, and a plurality of (four in this embodiment) raising paths 18 through which the planted culms raised by the raising devices 16 pass.

[0037] The lifting section 10 is provided with a support frame 25 that extends in the left-right direction of the machine body so as to span the upper parts of the lifting devices 16. The support frame 25 is made of a plate material bent into an angle shape, and has an upper surface portion located above the lifting drive shaft 17 and a vertical surface portion located behind the lifting drive shaft 17. The upper end portion of each lifting device 16 is supported by the support frame 25. In the following description, the seven lifting devices 16 will be referred to as the first to seventh lifting devices 16 from the left.

[0038] The lifting paths 18 are formed between adjacent lifting devices 16 in the left-right direction of the machine body. The four lifting paths 18 are referred to as the first to fourth lifting paths 18 in order from the left.

[0039] The lifting device 16 is provided in a posture inclined backward in a side view. The lifting device 16 is provided with a lifting chain 19 and a number of lifting claws 20 attached to the lifting chain 19 and acting to lift the planted stalks. The lifting device 16 is also provided with a drive sprocket 21 (corresponding to the "upper rotating body" according to the present invention) provided on the upper part of the lifting device 16, a tension sprocket 22, and a roller 23 (corresponding to the "lower rotating body" according to the present invention) provided on the lower part of the lifting device 16, and the lifting chain 19 is wound around these. Furthermore, a lifting cover 24 is provided to cover the lifting chain 19, the drive sprocket 21, the tension sprocket 22, and the roller 23 from the front.

[0040] The raising claw 20 is attached to the raising chain 19 so as to be able to rise and fall relative to the raising chain 19. The raising device 16 is configured so that the raising claw 20 is in an upright position relative to the raising chain 19 in the raising path 18 where the planted culms are raised, and in a non-raising path where the planted culms are not raised, the raising claw 20 is in a lying position relative to the raising chain 19. The raising claw 20 moves upward along the raising path 18 through which the planted culms pass, and the raising claw 20 raises the planted culms, so that the planted culms are introduced into the raising path 18.

[0041] The first raising path 18 is formed between the raising path side portion of the first raising device 16 and the raising path side portion of the second raising device 16. The first raising path 18 is passed by the planted stalks raised by the first raising device 16 and the planted stalks raised by the second raising device 16.

[0042] The second raising path 18 is formed between the non-raising path side portion and the third raising path side portion of the second raising device 16. The planted stalks raised by the third raising device 16 pass through the second raising path 18.

[0043] The third raising path 18 is formed between the raising path side portion of the fourth raising device 16 and the raising path side portion of the fifth raising device 16. The planted stalks raised by the fourth raising device 16 and the planted stalks raised by the fifth raising device 16 pass through the third raising path 18.

[0044] The fourth lifting path 18 is formed between the lifting path side portion of the sixth lifting device 16 and the lifting path side portion of the seventh lifting device 16. The planted stalks raised by the sixth lifting device 16 and the planted stalks raised by the seventh lifting device 16 pass through the fourth lifting path 18.

[0045] The raising drive shaft 17 is provided across the upper ends of the first to seventh raising devices 16 so as to be able to transmit driving force to each raising device 16. That is, the raising drive shaft 17 is provided at the upper end of the raising section 10 in a state extending along the left-right direction of the machine body. The raising drive shaft 17 is configured to be rotatable around a rotation axis X1 extending along the left-right direction of the machine body. Between the raising drive shaft 17 and each raising device 16, a transmission case 27 is provided for transmitting the power of the raising drive shaft 17 to the raising device 16. The power of the raising drive shaft 17 is transmitted to each raising device 16 (each driving sprocket 21) via each transmission case 27, etc.

[0046] The raising unit 10 has an upper cover 26 (corresponding to the "cover" of the present invention) that covers the raising drive shaft 17 and the support frame 25 from the front. The upper cover 26 has a recess 26a formed in a portion of the upper cover 26 located above the raising path 18 through which the planted stalks pass, the recess 26a being recessed upward when viewed from the front.

[0047] [Weeding tool] As shown in Figures 2 and 3, the first, third, fourth, sixth and eighth grass dividing tools 9 are composed of large grass dividing tools 9. The second, fifth and seventh grass dividing tools 9 are composed of small grass dividing tools 9. When performing harvesting work, the grass dividing tools 9 are located at a height position corresponding to the base of the planted culms and are located in front of the raising part 10 in a side view.

[0048] As shown in Fig. 5, the grass dividing tool 9 is provided with a main body 9a that divides the planted culms to be harvested, and a support part 9b that supports the main body 9a and is attached to the grass dividing frame 14. A connecting part 9c that connects the main body 9a and the support part 9b is provided in front of the support part 9b.

[0049] As shown in Figure 6, the support parts 9b of the first and eighth grass dividing tools 9 located at the outermost ends among the multiple grass dividing tools 9 are provided with an adjustment mechanism 30 that makes it possible to adjust the swing angle around the vertical swing axis X3. In other words, by the support parts 9b equipped with the adjustment mechanism 30, the grass dividing tool 9 is supported on the grass dividing frame 14 so as to be swingable left and right around the vertical swing axis X3.

[0050] The adjustment mechanism 30 comprises a contact portion 31 that contacts the upper surface portion of the grass dividing frame 14, a swing shaft member 32 that extends vertically and serves as a swing shaft core X3 for adjusting the grass dividing tool 9, and an adjustment fixing member 33 that extends vertically and fixes the grass dividing tool 9 at a predetermined swing angle.

[0051] The abutment portion 31 is formed with a swing shaft hole 31a through which the swing shaft member 32 is inserted, a first adjustment hole 31b formed rearward of the swing shaft hole 31a, and a second adjustment hole 31c formed outward in the left-right direction of the aircraft than the first adjustment hole 31b.

[0052] The swing shaft member 32 is a bolt that can be tightened and fixed. The swing shaft member 32 is inserted into a swing shaft hole 31a formed in the abutment part 31, and is tightened and fixed to a fastening hole (not shown) formed in the upper surface of the grass dividing frame 14.

[0053] The adjusting and fixing member 33 is a bolt that can be tightened and fixed. The adjusting and fixing member 33 is inserted into the first adjusting hole 31b or the second adjusting hole 31c formed in the abutting portion 31, and is tightened and fixed to the tightening hole formed in the upper surface of the grass dividing frame 14.

[0054] When the fastening of the swing shaft member 32 is loosened and the adjustment and fixing member 33 is removed, the grass dividing tool 9 becomes swingable with the swing shaft member 32 as the swing axis X3. In this state, the first adjustment hole 31b or the second adjustment hole 31c is aligned with the fastening hole formed on the upper surface of the grass dividing frame 14, and the adjustment and fixing member 33 is used to fasten and fix the grass dividing tool 9, and the swing shaft member 32 is further fastened and fixed. At this time, the swing angle of the grass dividing tool 9 can be adjusted by selecting either the first adjustment hole 31b or the second adjustment hole 31c. When the second adjustment hole 31c is selected, the front end of the grass dividing tool 9 is fixed in a state inclined outward in the left-right direction of the machine body, compared to when the first adjustment hole 31b is selected.

[0055] [Dividing Grass Guide] As shown in Figs. 2 and 3, the cutting section 4 is provided with a grass dividing guide 40 that acts on the planted culms before the lifting device 16 to divide the tip side of the planted culms to the left and right. The grass dividing guide 40 is made of a round pipe material. The grass dividing guide 40 is provided at a position in the left-right direction of the machine corresponding to the grass dividing tool 9. As shown in Fig. 5, the grass dividing guide 40 is arranged rearward of the front end of the first grass dividing tool 9 and extends from a height lower than the tip of the planted culms to a height higher than the tip of the planted culms. In this embodiment, as shown in Figs. 2 and 3, the grass dividing guide 40 is provided at a position in the left-right direction of the machine corresponding to the first grass dividing tool 9 located at the leftmost end of the multiple grass dividing tools 9. The upper end of the grass dividing guide 40 is passed through the recess 26a of the upper cover 26 and connected to the support frame 25.

[0056] As shown in Figures 4 and 5, the grass dividing guide 40 has a vertical guide section 41 that extends upward from a height lower than the tip of the planted culm when viewed from the front, at a left-right position of the machine corresponding to the first grass dividing tool 9, an inclined guide section 42 at the upper part of the grass dividing guide 40 that inclines so that the upper side is positioned closer to the first raising path 18 when viewed from the front, a front-to-rear extension section 43 that extends rearward from the inclined guide section 42, and an attachment section 44 provided at the upper end of the grass dividing guide 40 for attaching the grass dividing guide 40 to the support frame 25.

[0057] In addition, the grass dividing guide 40 is not fixed to the grass dividing tool 9, but is supported only by the support frame 25.

[0058] The vertical guide part 41 extends upward from the first grass dividing tool 9. The vertical guide part 41 has a first vertical guide part 41a located at the lower end of the grass dividing guide 40 and extending from the rear part of the first grass dividing tool 9 toward the upper right, a second vertical guide part 41b extending upward and rearward from the upper end part of the first vertical guide part 41a, and a third vertical guide part 41c extending upward from the upper end part of the second vertical guide part 41b.

[0059] In addition, bends are formed between the first vertical guide portion 41a and the second vertical guide portion 41b, between the second vertical guide portion 41b and the third vertical guide portion 41c, between the third vertical guide portion 41c and the inclined guide portion 42, and between the inclined guide portion 42 and the front-to-rear extension portion 43.

[0060] The first vertical guide portion 41a is configured to be located laterally outward as viewed from the front, and to be located forward as viewed from the side. Here, the first grass dividing tool 9 is arranged above the support portion 9b, and a through hole 34 is formed that penetrates the first grass dividing tool 9 vertically along the swing axis X3. The first vertical guide portion 41a, which is the lower end portion of the grass dividing guide 40, extends linearly, is formed into a shape of a crushed round pipe material, and is inserted into the through hole 34. Specifically, the through hole 34 is provided in the rear portion of the main body portion 9a of the first grass dividing tool 9. The through hole 34 is formed into an elongated hole shape having a major axis and a minor axis. The first vertical guide portion 41a is crushed from the left and right, and has a cross-sectional shape having a major axis and a minor axis. The first vertical guide portion 41a is arranged to penetrate the through hole 34 with the major axis of the through hole 34 extending in the direction along the major axis of the cross-sectional shape of the first vertical guide portion 41a.

[0061] The second vertical guide portion 41b extends linearly in the vertical direction of the aircraft body at a position corresponding to the left edge of the lifting cover 24 of the seventh lifting device 16 in a front view. In addition, the second vertical guide portion 41b is configured to be inclined so that the upper side is positioned further rearward in a side view.

[0062] The third vertical guide portion 41c, in a front view, extends linearly in the same direction as the second vertical guide portion 41b at a position corresponding to the left edge of the lifting cover 24 of the seventh lifting device 16. In addition, in a side view, the third vertical guide portion 41c is inclined so that the upper side is positioned further rearward, and is configured to be inclined more steeply than the second vertical guide portion 41b.

[0063] The lower end of the inclined guide portion 42 is connected to the upper end of the vertical guide portion 41. In a front view, the inclined guide portion 42 extends in an inclined manner so as to be located laterally inward of the body from the upper end of the third vertical guide portion 41c toward the upper side, and overlaps with the first raising path 18 above the rotation axis X2 of the drive sprocket 21. In addition, in a side view, the inclined guide portion 42 extends linearly and inclined so as to be located upward toward the rear side.

[0064] The front-rear extending portion 43 extends rearward from the upper end of the inclined guide portion 42. The front-rear extending portion 43 passes below the raising drive shaft 17 and extends linearly to a position corresponding to the lower edge of the support frame 25.

[0065] The mounting portion 44 is formed at the rear end of the front-rear extension portion 43. The mounting portion 44 is formed in a rectangular shape, and a bolt hole is formed in the portion above the connection point with the front-rear extension portion 43. The grass dividing guide 40 is fixed to the vertical surface portion of the support frame 25 located behind the raising drive shaft 17 by a bolt inserted into the bolt hole. The mounting portion 44 is disposed in a recess 26a formed in a portion of the upper cover 26 corresponding to the first raising path 18 in a front view.

[0066] [Another embodiment] Hereinafter, another embodiment in which the above embodiment is modified will be described.

[0067] (1) In the above embodiment, the grass dividing guide 40 is described as being provided at a position in the left-right direction of the body corresponding to the first grass dividing tool 9, but the present invention is not limited to the above embodiment, and the grass dividing guide 40 may be provided at a position in the left-right direction of the body corresponding to any of a plurality of grass dividing tools 9, and a configuration in which multiple grass dividing guides 40 are provided may also be used.

[0068] (2) In the above embodiment, the grass dividing guide 40 is described as having an inclined guide section 42 that is inclined so as to be positioned on the side of the raising path, but it may be configured not to have an inclined guide section 42 and not to overlap with the raising path 18 in a front view. In this case, for example, the grass dividing guide 40 may be configured to be attached to the support frame 25 above the raising cover 24 of the seventh raising device 16.

[0069] (3) In the above embodiment, the inclined guide portion 42 is configured to overlap with the first raising path 18 above the rotational axis X2 of the drive sprocket 21. However, the present invention is not limited to the above embodiment, and the inclined guide portion 42 may be configured to overlap with the first raising path 18 below the rotational axis X2 of the drive sprocket 21.

[0070] (4) In the above embodiment, the first vertical guide portion 41a, the second vertical guide portion 41b, the third vertical guide portion 41c, and the inclined guide portion 42 are described as extending in a straight line, but the present invention is not limited to the above embodiment and may be configured in a curved shape.

[0071] (5) In the above embodiment, the configuration including the upper cover 26 has been described as an example, but the configuration may not include the upper cover 26. Also, in the above embodiment, the configuration including the upper cover 26 has been described as an example, but the upper cover 26 may not include the recess 26a.

[0072] (6) In the above embodiment, the vertical guide portion 41 is described as being positioned above the grass dividing tool 9 when viewed from the front, but the present invention is not limited to the above embodiment, and for example, the vertical guide portion 41 may be positioned laterally outward of the grass dividing tool 9 when viewed from the front.

[0073] (7) In the above embodiment, the vertical guide portion 41 is described as being positioned rearward of the front end of the grass dividing tool 9. However, the present invention is not limited to the above embodiment. For example, the vertical guide portion 41 may be positioned at a position corresponding to the front end of the grass dividing tool 9.

[0074] (8) In the above embodiment, the through hole 34 is formed so as to penetrate the grass dividing tool 9 vertically along the swing axis X3, but the present invention is not limited to the above embodiment, and the through hole 34 may be formed at a position other than the position along the swing axis X3. Also, the grass dividing tool 9 may be configured so that the through hole 34 is not formed.

[0075] (9) In the above embodiment, a configuration in which the lower end of the vertical guide portion 41 is inserted into the through hole 34 has been described as an example, but the present invention is not limited to the above embodiment, and the lower end of the vertical guide portion 41 may be located above the grass dividing tool 9 and not inserted into the through hole 34.

[0076] (10) In the above embodiment, a configuration in which the support portions 9b of the first and eighth grass dividing tools 9 are provided with an adjustment mechanism 30 has been described as an example. However, the present invention is not limited to the above embodiment. For example, the support portions 9b of all grass dividing tools 9 may be provided with an adjustment mechanism 30, or the support portions 9b of the grass dividing tools 9 may not be provided with an adjustment mechanism 30.

[0077] (11) In the above embodiment, the grass dividing guide 40 is described as being made of round pipe material, but the present invention is not limited to the above embodiment and may be made of other materials, such as rod-shaped material.

[0078] The configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, unless a contradiction occurs. In addition, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these embodiments, and can be appropriately modified within the scope of the present invention. [Industrial Applicability]

[0079] The present invention can be used in a head-feeding combine harvester. [Explanation of symbols]

[0080] 4: Reaping part 5A: Driving section 9: Grass divider 14: Grass frame 16: Lifting device 18: Triggering Path 19: Raising chain 20: Raising claw 25: Support frame 26: Upper cover (cover) 26a: Recess 34:Through hole 40: Grassland Guide 41: Vertical guide section 42: Inclined guide section X2: Rotation axis X3: Oscillating shaft center

Claims

1. A combine harvester having a harvesting unit for harvesting planted stalks, The reaping section is provided with a plurality of weed-dividing tools provided at the lower tip of the reaping section for dividing the base side portion of the planted culm, a plurality of raising devices arranged along the left-right direction of the machine body and raising the planted culm divided by the weed-dividing tools, a weed-dividing guide extending from a height lower than the tip of the planted culm to a height higher than the tip of the planted culm at a left-right position of the machine body corresponding to the weed-dividing tools and acting on the planted culm before the raising devices to divide the tip side portion of the planted culm to the left and right, and a support frame extending along the left-right direction of the machine body so as to span the upper part of the plurality of raising devices and supporting the plurality of raising devices, The upper end of the grass guide is connected to the support frame, The plurality of lifting devices are configured to extend in a direction along a lifting path through which the planted stalks pass, and have a lifting cover that covers at least a portion of the plurality of lifting devices; The grass dividing guide overlaps with the edge of the raising cover on the raising path side when viewed from the front, and is connected to the support frame above the raising path.

2. The lifting device is provided with a plurality of lifting claws that move upward along the lifting path through which the planted stalks pass and lift the planted stalks, The combine harvester according to claim 1, wherein an inclined guide portion is provided at the upper portion of the grass dividing guide, the inclined guide portion being inclined so as to be positioned toward the raised path as it approaches the upper side when viewed from the front.

3. The combine harvester according to claim 2 , wherein the inclined guide portion overlaps with the raising path in a front view.

4. The lifting device is provided with an upper rotor provided on an upper portion of the lifting device, a lower rotor provided on a lower portion of the lifting device, and a lifting chain wound around the upper rotor and the lower rotor and having the plurality of lifting claws attached thereto; The combine harvester according to claim 3 , wherein the inclined guide portion overlaps with the raising path above a rotation axis of the upper rotating body in a front view.

5. The grass dividing guide is provided with a vertical guide portion extending upward from a height lower than the tip of the planted culm in a front view at a left-right position of the machine body corresponding to the grass dividing tool, 3. The combine harvester according to claim 2, wherein a lower end of the inclined guide portion is connected to an upper end of the vertical guide portion.

6. A combine harvester equipped with a harvesting section for harvesting planted culms, The reaping section is provided with a plurality of weed-dividing tools provided at the lower tip of the reaping section for dividing the base side portion of the planted culm, a plurality of raising devices arranged along the left-right direction of the machine body and raising the planted culm divided by the weed-dividing tools, a weed-dividing guide extending from a height lower than the tip of the planted culm to a height higher than the tip of the planted culm at a left-right position of the machine body corresponding to the weed-dividing tools and acting on the planted culm before the raising devices to divide the tip side portion of the planted culm to the left and right, and a support frame extending along the left-right direction of the machine body so as to span the upper part of the plurality of raising devices and supporting the plurality of raising devices, The upper end of the grass guide is connected to the support frame, The reaping unit is provided with a cover that covers the support frame from the front, A portion of the cover located above the raising path through which the planted stalk passes is recessed upward when viewed from the front to form a recess; A combine harvester in which the upper end of the grass dividing guide is passed through the recess and connected to the support frame.

7. A driving unit is provided behind the reaping unit, The grass dividing guide is provided with a vertical guide portion extending upward from a height lower than the tip of the planted culm in a front view at a left-right position of the machine body corresponding to the grass dividing tool, The combine harvester according to any one of claims 1 to 6, wherein the vertical guide portion extends upward from the grass dividing tool.

8. The grass splitter is provided with a through hole extending vertically, The combine harvester according to claim 7 , wherein a lower end of the vertical guide portion is inserted into the through hole.

9. A grass dividing frame for supporting the grass dividing tool is provided at the lower part of the cutting unit, The grass dividing tool is supported by the grass dividing frame so as to be swingable left and right around a vertical swing axis, The combine harvester according to claim 8, wherein the through hole passes through the grass dividing tool vertically along the swing axis.

10. The grass guide is made of a round pipe material, The combine harvester according to claim 9, wherein the lower end of the vertical guide portion is formed into a crushed shape of the round pipe material and is inserted into the through hole.

11. The combine harvester according to any one of claims 1 to 6, wherein the grass dividing guide is arranged rearward of a front end of the grass dividing tool.

Images