combine

Abstract

This invention proposes a combine harvester that prevents deformation of the lifter, which extends in the front-to-back direction to pick up the grain stalks collected by the raking device, and suppresses the accumulation of collected grain stalks that become entangled at the rear of the lifter. [Solution] The pre-harvesting processing device consists of a scraping device that scrapes and conveys grain stalks backward while keeping them upright, a cutting device that cuts the base of the conveyed grain stalks, an auger device (3C) that gathers the conveyed grain stalks to one side, and a feeder house that conveys the gathered grain stalks to a threshing device. The cutting device is formed by a pair of left and right rotating blade devices and a lifter device positioned above the rotating blade devices. Above the rotating blades (22) of the rotating blade devices, a pair of left and right lifters (31) extending in the front-rear direction of the lifter device and a connecting member (35) extending in the front-rear direction that supports the lower part of the lifters are positioned. The rear part of the connecting member is rotatably fixed to a support shaft (37) extending in the left-right direction provided on the lower wall of the auger frame (60) of the auger device.

Description

Technical Field

[0001] The present invention relates to a combine harvester equipped with a pre-cutting treatment device.

Background Art

[0002] Conventionally, in front of the threshing device of a combine harvester, there has been known a technology including a scraping device that conveys the cereal straws in the field backward while standing them up, a cutting device that cuts the roots of the conveyed cereal straws, an auger device that gathers the conveyed cereal straws to one side, and a pre-cutting treatment device formed by a feeder house that conveys the gathered cereal straws to the threshing device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technology of Patent Document 1, since the rear part of the lifter extending in the front-rear direction for picking up the cereal straws scraped by the scraping device is fixed to the cutting device, when the front part of the lifter jams into the convex part of the field, a large force is applied to the lifter and the lifter may be deformed. Further, since the rear part of the lifter extends behind the rotation locus of the tip of the reel line of the scraping device, there is a risk that the scraped cereal straws become entangled with the rear part of the lifter and stay there.

[0005] Therefore, an object of the present invention is to propose a combine harvester capable of preventing deformation of a lifter extending in the front-rear direction for picking up the cereal straws scraped by the scraping device and suppressing the scraped cereal straws from becoming entangled with the rear part of the lifter and staying there.

Means for Solving the Problems

[0006] The present invention, which solves the above problems, is as follows. In other words, the invention described in claim 1 is a combine harvester in which a running device (2) is provided on the lower side of the machine frame (1), a pre-harvesting device (3) is provided on the front side of the machine frame (1), and a threshing device (4) is provided behind the pre-harvesting device (3), The harvesting pre-processing device (3) consists of a scraping device (3A) that scoops and transports the grain stalks in the field backward while making them stand upright, a cutting device (3B) that cuts the base of the transported grain stalks, an auger device (3C) that gathers the transported grain stalks to one side, and a feeder house (3D) that transports the gathered grain stalks to the threshing device (4). The cutting device (3B) is formed by a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20). Above the rotating blades (22) of the rotating blade devices (20), the lifter The combine harvester is characterized by having a pair of left and right lifters (31) extending in the front-rear direction of the lid device (30), and a connecting member (35) extending in the front-rear direction that supports the lower part of the lifters (31), with the rear of the lifters (31) positioned inside the rotational trajectory (15) of the tip of the reel tine (13) when the scraping device (3A) is lowered, and the rear of the connecting member (35) being rotatably fixed to a support shaft (37) extending in the left-right direction provided on the lower wall of the auger frame (60) of the auger device (3C).

[0007] The invention described in claim 2 is the combine harvester according to claim 1, wherein the rear part of the lifter (31) is formed to be more upward sloping than the front part.

[0008] The invention described in claim 3 is the combine harvester according to claim 2, wherein the lower part of the lifter (31) and the front part of the connecting member (35) are connected by a plate-shaped guide (33).

[0009] The invention described in claim 4 is a combine harvester according to any one of claims 1 to 3, wherein, in a plan view, a pair of left and right first auxiliary lifters (50) are provided between a lifter device (30) positioned above the left rotating blade device (20) and a lifter device (30) positioned above the right rotating blade device (20), and in a side view, the front part of the first auxiliary lifter (50) extends forward of the rotating blade (22), and the upward slope at the rear of the first auxiliary lifter (50) is formed to be the same slope as the upward slope at the rear of the intermediate part of the connecting member (35).

[0010] The invention described in claim 5 is a combine harvester according to any one of claims 1 to 3, wherein, in a plan view, a pair of left and right second auxiliary lifters (51) are provided between a lifter device (30) positioned above the left rotating blade device (20) and a lifter device (30) positioned above the right rotating blade device (20), and in a side view, the front part of the second auxiliary lifter (51) extends forward of the rotating blade (22) and is positioned behind the front part of the lifter (31), and the second auxiliary lifter (51) is formed with a steeper upward slope than the lifter (31).

[0011] The invention described in claim 6 is a combine harvester according to claim 1, wherein a guide plate (40) is provided between a pair of left and right lifters (31), and in a side view, the guide plate (40) is formed by a horizontal portion (40A) extending rearward along the rotating blade (22) from the front end with a predetermined gap above the rotating blade (22), and a rearward-rising portion (40B) extending upward from the rear end of the horizontal portion (40A).

[0012] The invention described in claim 7 is the combine harvester according to claim 6, wherein the rear-upper portion (40B) has a plurality of openings (43) formed at predetermined intervals in the front-rear direction and the left-right direction.

[0013] The invention described in claim 8 is the combine harvester according to claim 7, wherein the opening (43) is formed as an elongated hole that is longer in the front-to-back direction than in the left-to-right direction.

[0014] The invention described in claim 9 is the combine harvester according to claim 8, wherein the rear portion of the rear-up portion (40B) is rotatably fixed to the support shaft (37).

[0015] The invention described in claim 10 is a combine harvester according to claim 9, wherein, in a plan view, a notch (44) extending to the left rear is formed in the left front part of the horizontal part (40A), and a notch (44) extending to the right rear is formed in the right front part.

[0016] The invention described in claim 11 is a combine harvester according to claim 10, wherein, in a side view, the front end of the horizontal portion (40A) is positioned between the front end of the rotating blade (22) and the rotating shaft (22A), the rear-upward portion (40B) is formed from a portion close to the rear of the rotating shaft (22A) toward the upper part of the support shaft (37), and in a plan view, an insertion portion (42) for inserting the rotating shaft (22A) is formed in the portion of the horizontal portion (40A) facing the rotating shaft (22A). [Effects of the Invention]

[0017] According to the invention described in claim 1, the pre-harvesting processing device (3) is composed of a scraping device (3A) that scrapes and conveys the grain stalks in the field backward while raising them upright, a cutting device (3B) that cuts the base of the conveyed grain stalks, an auger device (3C) that gathers the conveyed grain stalks to one side, and a feeder house (3D) that conveys the gathered grain stalks to the threshing device (4), wherein the cutting device (3B) is formed of a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20), and above the rotating blades (22) of the rotating blade devices (20) are a pair of left and right extending in the front-rear direction of the lifter device (30) A lifter (31) and a connecting member (35) extending in the front-rear direction that supports the lower part of the lifter (31) are arranged, the rear of the lifter (31) is positioned inside the rotational trajectory (15) of the tip of the reel tine (13) when the scraping device (3A) is lowered, and the rear of the connecting member (35) is rotatably fixed to a support shaft (37) extending in the left-right direction provided on the lower wall of the auger frame (60) of the auger device (3C). As a result, the front of the lifter (31) moves vertically along the unevenness of the field, suppressing the application of large external forces to the lifter (31) and preventing deformation of the lifter (31). Furthermore, the stalks scooped up by the reel tine (13) are moved to the rear of the lifter (31), preventing them from becoming entangled and accumulating at the rear of the lifter (31), and allowing the stalks to be efficiently transported from the lifter (31) to the auger device (3C).

[0018] According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, the rear part of the lifter (31) is formed with a more upward slope than the front part, so that the raked grain stalks do not get tangled and remain at the rear part of the lifter (31) can be further suppressed.

[0019] According to the invention described in claim 3, in addition to the effects of the invention described in claim 2, the lower part of the lifter (31) and the front part of the connecting member (35) are connected by a plate-shaped guide (33), so the rigidity of the lifter (31) and the connecting member (35) is increased, and deformation of the lifter (31) can be prevented more effectively.

[0020] According to the invention described in claim 4, in addition to the effects of the invention described in any one of claims 1 to 3, in a plan view, a pair of left and right first auxiliary lifters (50) are provided between the lifter device (30) positioned above the left rotating blade device (20) and the lifter device (30) positioned above the right rotating blade device (20). In a side view, the front part of the first auxiliary lifter (50) extends further forward than the rotating blade (22), and the upward slope of the first auxiliary lifter (50) is formed to be the same slope as the upward slope of the middle part of the connecting member (35). As a result, the first auxiliary lifter (50) can guide the raked grain stalks moving between the left lifter device (30) and the right lifter device (30) to the rotating blade (22) and cut the base of the grain stalks.

[0021] According to the invention described in claim 5, in addition to the effects of the invention described in any one of claims 1 to 3, in a plan view, a pair of left and right second auxiliary lifters (51) are provided between the lifter device (30) positioned above the left rotating blade device (20) and the lifter device (30) positioned above the right rotating blade device (20). In a side view, the front part of the second auxiliary lifter (51) extends forward of the rotating blade (22) and is positioned behind the front part of the lifter (31). The second auxiliary lifter (51) is formed with a steeper upward slope than the lifter (31). As a result, the second auxiliary lifter (51) can guide the raked grain stalks moving between the left lifter device (30) and the right lifter device (30) to the rotating blade (22) and cut the base of the grain stalks.

[0022] According to the invention of claim 6, in addition to the effects of the invention of claim 1, a guide plate (40) is provided between a pair of left and right lifters (31). In a side view, the guide plate (40) is formed of a horizontal portion (40A) that extends rearward along the rotating blade (22) from the front end with a predetermined gap above the rotating blade (22), and a rearward-rising portion (40B) that extends upward from the rear end of the horizontal portion (40A). This prevents the scattering of crops that have been thrown up onto the upper surface of the rotating blade (22) into the auger device (3C), thereby preventing a decrease in the quality of harvested grains. Furthermore, a large space can be formed behind the gap, preventing foreign matter from getting stuck in the gap.

[0023] According to the invention described in claim 7, in addition to the effect of the invention described in claim 6, since a plurality of openings (43) are formed in the upwardly inclined portion (40B) at predetermined intervals in the front-rear direction and the left-right direction, it is possible to reduce the foreign matter that leaks from the upper surface of the guide plate (40) moving backward and scatters into the auger device (3C).

[0024] According to the invention described in claim 8, in addition to the effect of the invention described in claim 7, since the openings (43) are formed as long holes whose front-rear direction is longer than the left-right direction, it is possible to further reduce the foreign matter that scatters into the auger device (3C).

[0025] According to the invention described in claim 9, in addition to the effect of the invention described in claim 8, since the rear portion of the upwardly inclined portion (4OB) is rotatably fixed to the support shaft (37), the guide plate (40) can be swung in accordance with the vertical swing of the lifter (31).

[0026] According to the invention described in claim 10, in addition to the effect of the invention described in claim 9, in a plan view, a notch portion (44) extending left-rearward is formed at the left front portion of the horizontal portion (40A), and a notch portion (44) extending right-rearward is formed at the right front portion. Therefore, the foreign matter bounced onto the upper surface of the rotary blade (22) can be moved in the left-right direction and efficiently discharged to the outside.

[0027] According to the invention described in claim 11, in addition to the effect of the invention described in claim 10, in a side view, the front end portion of the horizontal portion (40A) is disposed between the front end portion of the rotary blade (22) and the rotary shaft (22A), and the upwardly inclined portion (40B) is formed from a portion close to the rear portion of the rotary shaft (22A) toward the upper portion of the support shaft (37). In a plan view, an insertion portion (42) through which the rotary shaft (22A) is inserted is formed at a portion of the horizontal portion (40A) facing the rotary shaft (22A). Therefore, it is possible to reduce the foreign matter bounced onto the upper surface of the rotary blade (22). Further, since a larger space can be formed on the rear side of the gap, it is possible to more effectively prevent the gap from being clogged with foreign matter.

Brief Description of the Drawings

[0028] [Figure 1] This is a front view of a combine harvester. [Figure 2] This is a left side view of a combine harvester. [Figure 3] This is a plan view of a combine harvester. [Figure 4] This is a left side view of the scraping device. [Figure 5] This is a plan view of the cutting device. [Figure 6] This is a left side view of the cutting device. [Figure 7] A plan view of the information board. [Figure 8] This is a left side view of another lifter. [Figure 9] This is a left side view of another lifter. [Figure 10] This is a plan view of the auxiliary lifter of the first embodiment. [Figure 11] This is a left side view of the auxiliary lifter. [Figure 12] This is a plan view of the auxiliary lifter of the second embodiment. [Figure 13] This is a left side view of the auxiliary lifter. [Figure 14] This is a perspective view of the discharge auger. [Modes for carrying out the invention]

[0029] As shown in Figures 1-3, the general-purpose combine harvester has a running device 2 consisting of a pair of left and right crawlers that travel on the soil surface on the underside of the machine frame 1, a pre-harvesting device 3 for harvesting grain stalks in the field is provided on the front of the machine frame 1, a threshing device 4 for threshing and sorting the harvested grain stalks is provided on the rear left side of the pre-harvesting device 3, and a control unit 5 for the operator is provided on the rear right side of the pre-harvesting device 3.

[0030] An engine room 6 housing the engine is located below the control unit 5, a grain tank 7 for storing threshed and sorted grain is located behind the control unit 5, and a discharge auger 8 is provided behind the grain tank 7, consisting of a vertically extending grain lifting section 8A for discharging grain to the outside, and a horizontal discharge section 8B extending forward from the top of the grain lifting section 8A.

[0031] The pre-harvesting processing device 3 consists of a scraping device 3A that scoops and transports the grain stalks in the field backward while standing them upright, a cutting device 3B that cuts the base of the grain stalks being transported to the rear and below the scraping device 3A, an auger device 3C that gathers the grain stalks with their bases cut to the left, and a feeder house 3D that transports the gathered grain stalks to the threshing device 4.

[0032] <Scooping device> As shown in Figure 4, the scraping device 3A is located on the front upper side of the auger frame 60 of the auger device 3C. It is also formed to be approximately the same width as the width of the auger frame 60 in the left-right direction.

[0033] The scraping device 3A consists of a scraping reel 10 and an arm 11 that moves the scraping reel 10 up and down.

[0034] In a side view, the scraping reel 10 is formed in a roughly hexagonal shape, and tine support rods 12 extending in the left-right direction are provided at six corners, with a plurality of reel tines 13 suspended from the tine support rods 12 at predetermined intervals in the left-right direction.

[0035] A rotating shaft 14 extending in the left-right direction is mounted on the front of the arm 11, and a scraping reel 10 is supported on the rotating shaft 14. The rear of the arm 11 is rotatably fixed to the upper part of the rear wall of the auger frame 60 of the auger device 3C, and the arm 11 and the middle part of the left wall of the auger frame 60 are connected by a lifting device (not shown) such as a hydraulic cylinder that swings the front of the arm 11 up and down.

[0036] As shown in Figures 5-7, the cutting device 3B consists of a pair of left and right rotating blade devices 20 for cutting the base of the grain stalks, and a pair of left and right lifter devices 30 located above the rotating blade devices 20. The lifter devices 30 are devices that stand up the grain stalks that have been picked up by the picking device 3A.

[0037] The left-right spacing between the left and right rotating blade devices 20 is set to match the spacing between rows in the field. This allows the rotating blade devices 20 to efficiently cut the grain stalks planted in each row of the field.

[0038] The rotating blade device 20 is formed from a frame 21 extending in the front-rear direction, a rotating blade 22 provided on the upper side of the front part of the frame 21, a motor 23 provided on the upper side of the rear part of the frame 21 for rotating the rotating blade 22, and a cover 24 detachably attached to the lower part of the frame 21. The rear part of the frame 21 is fixed to the lower surface of the lower wall of the auger frame 60 via a connecting member 25. The upper part of the motor 23 is covered by a motor cover 26 formed with an upward sloping rearward angle.

[0039] The rotating blade 22 is positioned below the upper surface of the lower wall of the auger frame 60. This prevents a large amount of soil that comes into contact with the rotating blade 22 from entering the auger frame 60. In addition, the rotating blade 22 is positioned behind the bottom dead center of the reel tine 13 when the raking device 3A is lowered. This suppresses head loss and allows the base of the grain stalks raked in by the raking device 3A to be cut and efficiently transported to the auger frame 60.

[0040] The rotating blade 22 of the left rotating blade device 20 rotates clockwise, and the rotating blade 22 of the right rotating blade device 20 rotates counterclockwise. This prevents soil that comes into contact with the rotating blade 22 from being scattered outside the auger frame 60.

[0041] The sprocket for the rotating blade 22, which is supported at the bottom of the rotating shaft 22A of the rotating blade 22, the sprocket for the motor, which is supported at the bottom of the rotating shaft of the motor 23, and the chains wound around both sprockets are covered by the cover 24. This prevents the sprockets and chains from coming into contact with the field and prevents soil from adhering to the sprockets and chains.

[0042] The lower front portion of the cover 24 is formed with a downward slope towards the rear. This prevents the front portion of the cover 24 from digging into unevenness in the field, allowing the front portion of the rotating blade device 20 to move efficiently up and down along the unevenness of the field.

[0043] The lifter device 30 is formed from a lifter 31 made of a pair of left and right round steel bars, a skid 32 attached to the lower front of the lifter 31, and a downwardly extending plate-shaped guide 33 provided on the rear of the skid 32. This prevents grain stalks from passing under the lifter 31 and being conveyed to the rotating blade device 20.

[0044] The middle section of the lifter 31 in the front-rear direction is rotatably fixed via a connecting member 35 to a support shaft 37 that extends in the left-right direction and is provided on the upper surface of the lower wall of the auger frame 60. The rear section of the lifter 31 is connected to the rear of the connecting member 35 via a support member 36. This allows the front section of the lifter 31 to move vertically along the unevenness of the field, efficiently raising the raked grain stalks. The connecting member 35 is made of round steel, extends downward from the middle section of the lifter 31, then curves backward, and is then formed with an upward sloping rearward toward the support shaft 37. The support member 36 is made of a plate-shaped member.

[0045] In a side view, the lifter 31 is positioned with an upward sloping rearward inclination, and the rear of the lifter 31 is positioned inward from the rotational trajectory 15 of the tip of the reel tine 13 when the raking device 3A is lowered. This allows the raked grain stalks to be moved to the rear of the lifter 31 by the reel tine 13, preventing them from becoming entangled at the rear of the lifter 31, and enabling efficient transport of the grain stalks, whose bases have been cut by the rotating blades 22, to the auger device 3C.

[0046] In a plan view, the left side of the sled 32 is formed from the front end towards the rear left, and the right side of the sled 32 is formed from the front end towards the rear right. In a longitudinal section view in the left-right direction, the left side of the sled 32 is formed towards the upper left, and the right side of the sled 32 is formed towards the upper right. This allows the sled 32 to move along the unevenness of the field, preventing the front part of the lifter 31 from penetrating the field soil.

[0047] A guide plate 40 is provided between a pair of left and right lifters 31 located above the rotating blade 22. This reduces the amount of grain stalks that leak from the rear of the pair of left and right lifters 31 into the field, thereby suppressing head loss.

[0048] In a side view, the front end of the guide plate 40 is positioned between the front end of the rotating blade 22 and the rotation axis 22A of the rotating blade 22, and the rear end of the guide plate 40 is rotatably fixed to the support shaft 37. The guide plate 40 has a horizontal portion 40A that extends rearward along the rotating blade 22 with a predetermined gap above the rotating blade 22 from the front end, and a rearward-sloping portion 40B that extends upward toward the upper part of the support shaft 37 from the proximal part of the rotation axis 22A of the rotating blade 22.

[0049] The length of the guide plate 40 in the left-right direction is shorter than the left-right distance between the pair of left and right lifters 31. In addition, the left and right sides of the guide plate 40 each have upwardly bent connecting portions 41, and these connecting portions 41 are connected to a pair of left and right connecting members 35 that support the middle portion of the lifter 31 from below. This allows the guide plate 40 to move vertically in conjunction with the vertical movement of the lifter 31. The front end of the guide plate 40 can also be positioned behind the rotation axis 22A of the rotating blade 22.

[0050] In the horizontal section 40A, a through-hole 42 is formed in the portion of the rotating blade 22 facing the rotation axis 22A, allowing the upper part of the rotation axis 22A to pass through. This allows the guide plate 40 to be positioned close to the upper side of the rotating blade 22.

[0051] Multiple openings 43 are formed in the rear-up section 40B at predetermined intervals in the front-rear and left-right directions. This prevents foreign matter such as soil and pebbles attached to the raked grain stalks moving backward on the upper surface of the rear-up section 40B from being transported to the auger frame 60 by allowing them to fall into the space below the rear-up section 40B. Furthermore, it is preferable that the openings 43 be formed as elongated holes, with the front-rear direction being longer than the left-right direction.

[0052] It is preferable to form a notch 44 extending to the left rear on the left front of the guide plate 40, and a notch 44 extending to the right rear on the right front. This allows foreign matter that has been thrown onto the upper surface of the rotating blade 22 to be moved in the left-right direction and efficiently discharged to the outside.

[0053] A regulating member 45, formed from a round steel bar and extending forward from the lower wall of the auger frame 60, is provided on the lower side of the guide plate 40. This prevents the guide plate 40 from bending significantly downwards, as it will come into contact with the regulating member 45, preventing further deformation and thus preventing a collision between the guide plate 40 and the rotating blade 22.

[0054] A rotating shaft 65 extending in the left-right direction is formed on the lower surface of the lower wall of the auger frame 60, and the front part of a detection body 66 that detects the height of the auger frame 60 from the field surface, which extends downward and rearward, is fixed to the rotating shaft 65. The rotation angle of the rotating shaft 65 is detected by an angle sensor such as a potentiometer (not shown), and the height of the auger frame 60 is controlled to a predetermined height according to the measurement value of the angle sensor.

[0055] As shown in Figure 8, the other lifters 31A of the lifter device 30 are arranged with an upward slope at the rear. The upward slope angle at the rear of the lifter 31A is made larger than the upward slope angle at the rear of the guide plate 40B. This prevents the grain stalks that have been scooped up from getting tangled between the rear of the lifter 31A and the rear of the guide plate 40B, and allows the grain stalks, whose bases have been cut by the rotating blades 22, to be conveyed to the auger device 3C more efficiently.

[0056] As shown in Figure 9, yet another lifter 31B of the lifter device 30 is positioned with an upward slope at the rear. The lifter 31B is formed by a front lifter 38A and a rear lifter 38B, and the rear part of the front lifter 38A is rotatably fixed to a support shaft 39 that extends in the left-right direction and is provided on the front part of the rear lifter 38B. This makes it possible to further suppress the front part of the front lifter 38A from penetrating the soil of the field as the sled 32 moves along the unevenness of the field.

[0057] The rear upward inclination angle of the rear lifter 38B is set to be greater than the rear upward inclination angle of the rear upward section 40B of the guide plate 40. This prevents the grain stalks that have been scooped up between the rear of the rear lifter 38B and the rear upward section 40B, and allows the grain stalks, whose bases have been cut by the rotating blades 22, to be conveyed more efficiently to the auger device 3C.

[0058] (Auxiliary lifter of the first embodiment) As shown in Figures 10 and 11, an auxiliary lifter (the "first auxiliary lifter" in the claim) 50, made from round steel, is provided above the rotating blade 22 of the left rotating blade device 20 and the rotating blade 22 of the right rotating blade device 20.

[0059] The left auxiliary lifter 50L is located to the right of the right-side lifter 31 of the lifter device 30, which is located above the left-side rotating blade device 20.

[0060] In a plan view, the front of the auxiliary lifter 50L extends forward from the rotating blade 22, and its rear is fixed to the front of the motor cover 26. Furthermore, the auxiliary lifter 50L is formed to slope towards the left as it extends from the front to the rear. In a side view, the auxiliary lifter 50L is formed with an upward sloping rearward inclination and is formed approximately parallel to the upward sloping rearward portion of the connecting member 35. This allows the stalks that have been detached from the pair of left and right lifters 31 of the lifter device 30 and are moving to the right to be guided to the rotating blade 22, where they can be cut at the base of the stalks.

[0061] The right-side auxiliary lifter 50R is located to the left of the left-side lifter 31 of the lifter device 30, which is located above the right-side rotating blade device 20.

[0062] In a plan view, the front of the auxiliary lifter 50R extends forward from the rotating blade 22, and its rear is fixed to the front of the motor cover 26. Furthermore, the auxiliary lifter 50R is formed to be inclined to the right as it extends from the front to the rear. In a side view, the auxiliary lifter 50R is formed with an upward sloping rearward inclination and is formed approximately parallel to the upward sloping rearward portion of the connecting member 35. This allows the raked grain stalks that have come off the pair of left and right lifters 31 of the lifter device 30 and are moving to the left to be guided to the rotating blade 22, where the base of the grain stalks can be cut.

[0063] (Auxiliary lifter of the second embodiment) As shown in Figures 12 and 13, an auxiliary lifter (the "second auxiliary lifter" in the claim) 51, made from round steel, is provided above the rotating blade 22 of the left rotating blade device 20 and the rotating blade 22 of the right rotating blade device 20.

[0064] The left auxiliary lifter 51L is located to the right of the right-side lifter 31 of the lifter device 30, which is located above the left-side rotating blade device 20.

[0065] In a plan view, the front of the auxiliary lifter 51L is located in front of the adjacent lifter 31, and its rear is fixed to the middle of the motor cover 26. In a side view, the auxiliary lifter 51L is formed with a steeper upward slope than the adjacent lifter 31. This allows the raked grain stalks that have come off the pair of left and right lifters 31 of the lifter device 30 and are moving to the right to be guided to the rotating blade 22, where the base of the grain stalks can be cut. It is preferable to provide a sled at the front of the auxiliary lifter 51L, similar to the lifter 31.

[0066] The right-side auxiliary lifter 51R is located to the left of the left-side lifter 31 of the lifter device 30, which is located above the right-side rotating blade device 20.

[0067] In a plan view, the front of the auxiliary lifter 51R is located in front of the adjacent lifter 31, and its rear is fixed to the middle of the motor cover 26. In a side view, the auxiliary lifter 51R is formed with a steeper upward slope than the adjacent lifter 31. This allows the raked grain stalks that have come off the pair of left and right lifters 31 of the lifter device 30 and are moving to the left to be guided to the rotating blade 22, where the base of the grain stalks can be cut. It is preferable to provide a sled at the front of the auxiliary lifter 51R, similar to the lifter 31.

[0068] <Auger device> As shown in Figure 14, the auger device 3C consists of an auger frame 60 and scraping augers 61 mounted on the left and right walls of the auger frame 60.

[0069] Multiple raking fingers 62 that can extend and retract from the outer surface are provided on the left side of the outer surface of the raking auger 61. This allows the grain stalks with their bases cut, which have been gathered in front of the inlet of the auger frame 60, to be efficiently transported to the feeder house 3D.

[0070] Multiple conveying spirals 63 are provided on the right side of the outer surface of the raking auger 61. This allows the grain stalks that have been conveyed to the auger frame 60 to be efficiently gathered in front of the inlet.

[0071] The lower wall of the auger frame 60 is formed in a gently curving shape that protrudes downward, and an inlet (not shown) for transporting grain stalks to the feeder house 3D is formed in the part of the rear wall facing the scraping auger 61.

[0072] <Feeder House> As shown in Figure 2, the feeder house 3D connects the auger device 3C and the threshing device 4, and is a device that transports the grain stalks, which are the material to be processed, to the left side of the auger frame 60 to the threshing device 4. [Explanation of Symbols]

[0073] 1. Aircraft frame 2. Traveling device 3. Pre-harvesting treatment device 3A Scraping device 3B Cutting device 3C Auger Device 3D Feeder House 4. Threshing machine 13 Reeltine 15 rotational trajectories 20 Rotary blade device 22 rotary blades 22A Rotating shaft 30 Lifter device 31 Lifter 33 Guide 35 Connecting member 37 Spindle 40 Information board 40A horizontal section 40B Rear upward section 42 Insertion part 43 Opening 44 Notch 50 Auxiliary lifter (1st auxiliary lifter) 51. Auxiliary lifter (second auxiliary lifter) 60 Auger Frame

Claims

1. In a combine harvester having a running gear (2) on the underside of the machine frame (1), a pre-harvesting device (3) on the front side of the machine frame (1), and a threshing device (4) behind the pre-harvesting device (3), The aforementioned pre-harvesting processing device (3) consists of a scraping device (3A) that scoops and transports the grain stalks in the field backward while making them stand upright, a cutting device (3B) that cuts the base of the transported grain stalks, an auger device (3C) that gathers the transported grain stalks to one side, and a feeder house (3D) that transports the gathered grain stalks to the threshing device (4). The cutting device (3B) is formed by a pair of left and right rotating blade devices (20) and a lifter device (30) positioned above the rotating blade devices (20), Above the rotating blade (22) of the rotating blade device (20), a pair of left and right lifters (31) extending in the front-rear direction of the lifter device (30) and a connecting member (35) extending in the front-rear direction that supports the lower part of the lifters (31) are arranged. The rear of the lifter (31) is positioned inward from the rotational trajectory (15) of the tip of the reel tine (13) when the scraping device (3A) is descending. A combine harvester characterized in that the rear part of the connecting member (35) is rotatably fixed to a support shaft (37) that extends in the left-right direction and is provided on the lower wall of the auger frame (60) of the auger device (3C).

2. The combine harvester according to claim 1, wherein the rear part of the lifter (31) is formed to be more upward sloping than the front part.

3. The combine harvester according to claim 2, wherein the lower part of the lifter (31) and the front part of the connecting member (35) are connected by a plate-shaped guide (33).

4. In a plan view, a pair of left and right first auxiliary lifters (50) are provided between the lifter device (30) positioned above the left rotating blade device (20) and the lifter device (30) positioned above the right rotating blade device (20). The combine harvester according to any one of claims 1 to 3, wherein, in a side view, the front part of the first auxiliary lifter (50) extends forward of the rotating blade (22), and the upward slope at the rear of the first auxiliary lifter (50) is formed to be the same slope as the upward slope at the rear of the intermediate part of the connecting member (35).

5. In a plan view, a pair of left and right second auxiliary lifters (51) are provided between the lifter device (30) positioned above the left rotating blade device (20) and the lifter device (30) positioned above the right rotating blade device (20). The combine harvester according to any one of claims 1 to 3, wherein, in a side view, the front part of the second auxiliary lifter (51) extends forward of the rotating blade (22) and is positioned behind the front part of the lifter (31), and the second auxiliary lifter (51) is formed with a steeper upward slope than the lifter (31).

6. A guide plate (40) is provided between the left and right pair of lifters (31), The combine harvester according to claim 1, wherein, in a side view, the guide plate (40) is formed by a horizontal portion (40A) extending rearward along the rotating blade (22) from the front end with a predetermined gap above the rotating blade (22), and a rearward-sloping portion (40B) extending upward from the rear end of the horizontal portion (40A).

7. The combine harvester according to claim 6, wherein a plurality of openings (43) are formed in the rear-upper portion (40B) at predetermined intervals in the front-rear direction and the left-right direction.

8. The combine harvester according to claim 7, wherein the opening (43) is formed as an elongated hole that is longer in the front-to-back direction than in the left-to-right direction.

9. The combine harvester according to claim 8, wherein the rear portion of the aforementioned rear-up section (40B) is rotatably fixed to a support shaft (37).

10. The combine harvester according to claim 9, wherein, in a plan view, a notch (44) extending to the left rear is formed in the left front part of the horizontal part (40A), and a notch (44) extending to the right rear is formed in the right front part.

11. In a side view, the front end of the horizontal portion (40A) is positioned between the front end of the rotating blade (22) and the rotating shaft (22A), and the rear-upward portion (40B) is formed from a part close to the rear of the rotating shaft (22A) toward the upper part of the support shaft (37). The combine harvester according to claim 10, wherein, in a plan view, an insertion portion (42) is formed in the portion of the horizontal portion (40A) facing the rotation axis (22A) through which the rotation axis (22A) is inserted.

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