JP4820080B2 - Combine harvester - Google Patents

Description

  The present invention relates to a harvesting device for a combine, and more particularly to a structure of a harvesting device that improves the harvesting efficiency of residue in a second mower.

  Generally, a harvesting device for a general-purpose combiner is provided with a weeding board at a low front position, and a mowing unit just behind it. Above these, reels are provided in an axial manner, and at the rear position thereof, a lateral feed auger having a width equivalent to the cutting width of the reaping device is provided on the horizontal shaft. Moreover, the start end part of the conveyance conveyor connected to the threshing apparatus is connected and comprised by the one side back of a transverse feed auger. In the harvesting device configured as described above, the crops harvested by the harvesting device as the combine moves forward are collected on one side by the scooping spiral of the lateral feed agar and supplied to the starting end of the conveyor. Then, it is conveyed to the rear upper part and supplied to a threshing device or the like.

  With such a combine, when the cutting height is raised and the cereals are harvested, a tall residue remains in the field. Therefore, a second mower is arranged behind the mowing unit in front of the aircraft. It is configured to reap the root of the residue. For example, in the combine disclosed in Patent Document 1, a mowing unit disposed in front of the apparatus and a second mower as a second mowing unit are configured, and the upper part of the cereal is harvested by the front mowing unit. Then, the remaining stock portion (residue) is cut by second mower and left in a field scene (see, for example, Patent Document 1).

By the way, in the self-detaching combine, a weed stalk formed in a series from the vicinity of the front end of the aircraft to the vicinity of the rear end of the traveling apparatus is disposed, In other words, a configuration in which an uncut grain candy is not entangled with a traveling device or the like is known. With respect to this weed culm, from the viewpoint of improving the harvesting efficiency, several techniques have already been disclosed so that the entanglement with the cereal can be reduced and good harvesting can be carried out (for example, Patent Document 2). And Patent Document 3).
JP 2001-299041 A JP-A-9-121658 Japanese Patent Laid-Open No. 6-30737

  However, in the general-purpose combiner, the cutting width of the cutting portion disposed in front of the cutting device and the cutting width by the second mower are different from each other, so that the second mower disposed behind the cutting portion is cut by the cutting portion. In some cases, the cereal residue was not completely cut. In addition, even in the case where the above-mentioned weed pods are provided, there is a space where uncut cereals invade in the second mower, and the uncut cereal tangles are entangled in the second more part and the ears are cut off. In some cases, the cocoons were pulled out, or the uncut grain husks were not cut by the second mower and were left untouched by the second mower support.

  Therefore, the present invention relates to a combine harvester, which solves the above-described conventional problems, and reliably cuts residue in second moor and reliably weeds uncut cereals to increase harvest efficiency. An object is to provide a reaping device.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, the harvesting device (8) protrudes in front of the machine body so that it can be moved up and down, and the second mower (34) is arranged in the rear part of the harvesting device (8) so that it can be moved up and down The second mower (34) has a weed plate (60) disposed on one side of the cutting blade portion (42), and the weed plate (60) is formed in a substantially wedge shape in plan view, and has a sharp portion. And a part of the reinforcing frame (62) constituting the cutting blade case (49) on one side of the second mower (34). The take-up guide (63) protrudes forward from the front of the machine body at the front end of the weed plate (60), and the back end of the take-up guide (63) is the weed plate (60). ) Is movably pivoted to the weed ridge (66) provided at the front side of the mowing device (8). The weed fold (66) is pivotally supported by the cutting frame (33) constituting the cutting device (8) so as to be rotatable in the vertical direction. The rear portion (66b) is pivotally supported by the cutting blade case (49) so as to be pivotable in the vertical direction, and is configured to be extendable in the front-rear direction .

In the claim 2, the harvesting device for the combine according to claim 1, wherein the take-up guide (63) is configured such that the cereals that come into contact with the take-in guide (63) are attached to the take-up guide (63). A portion along the longitudinal direction that is guided along and reaches the cutting blade portion (42) of the second mower (34) is formed in a columnar shape or a cylindrical shape whose outer peripheral surface is substantially circular. is there.

  As effects of the present invention, the following effects can be obtained.

As shown in claim 1, the harvester of the combine in which the mowing device (8) protrudes in front of the machine body so as to be movable up and down, and the second mower (34) is arranged in the rear portion of the mowing device (8) so as to be movable up and down. In the apparatus, the second mower (34) is provided with a weed plate (60) on one side portion of the cutting blade (42), and the weed plate (60) is formed in a substantially wedge shape in a plan view. The portion is arranged so as to protrude forward of the machine body, and the weed plate (60) is arranged on one side of the reinforcing frame (62) constituting the cutting blade case (49) on one side of the second mower (34). Projecting forward from the section, and at the front end of the weed plate (60), a take-in guide (63) projects toward the front outside the machine body, and the take-up guide (63) 60) is movably supported by the weed ridge (66) provided at the front side of the mowing device (8). The weed fold (66) is pivotally supported by the cutting frame (33) constituting the cutting device (8) so as to be rotatable in the vertical direction. The rear portion (66b) is pivotally supported by the cutting blade case (49) so as to be pivotable in the vertical direction, and is configured to be extendable in the front-rear direction. We can surely weed and improve cutting efficiency.
In particular, in the secondmore, it is possible to improve the harvesting efficiency by preventing the cereals from being caught or the ears being cut off.

Moreover, the said weed board (60) protrudes ahead from a part of reinforcement frame (62) which comprises the cutting blade case (49) of the one side part of said 2nd moor (34), and this weed board (60) Since the take-in guide (63) protrudes toward the front end outside the machine body , the number of parts can be reduced and the manufacturing cost can be reduced by using existing parts.

Further, the weed board (60) is formed in a substantially wedge shape in plan view, and the sharp portion is arranged so as to protrude forward of the aircraft, so that the cereals moved from the front of the aircraft are effectively divided in the left-right direction. Therefore, weeding performance can be improved.

The take-up guide (63) has a rear end pivotably supported by the weed plate (60) and a front end provided on the side of the mowing device (8). ), And the weed ridge (66) is pivotally pivotable in the vertical direction on the cutting frame (33) of which the front part (66a) constitutes the cutting device (8). Since the rear part (66b) is pivotally supported by the cutting blade case (49) so as to be pivotable in the vertical direction and is extendable in the front-rear direction , the second mower can be moved up and down. The insert guide, the weed board, and the weed fence can be always engaged.

As shown in claim 2, in the harvesting device for a combine according to claim 1, the take-up guide (63) is configured such that the cereal abuts against the take-up guide (63). The portion along the longitudinal direction until reaching the cutting blade portion (42) of the second mower (34) is formed in a columnar shape or a cylindrical shape whose outer peripheral surface is substantially circular . Therefore, the cereal can be smoothly guided and the cutting efficiency can be improved.

  Next, the best mode for carrying out the invention will be described with reference to the drawings.

  FIG. 1 is a left side view showing an overall configuration of a combine equipped with a reaping device according to the present invention, and FIG. 2 is a right side view of the reaping device.

  3 is a left side view of the cutting device, FIG. 4 is a plan view of a cutting blade portion in the second mower, FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4, and FIG. 6 is a left side view of the second mower.

  FIG. 7 is an enlarged plan view of the left end portion of the cutting blade portion in the second mower, and FIG. 8 is a diagram showing the up and down state of the second mower in the cutting device.

  In addition, although the combine provided with the reaping device 8 which concerns on a present Example is equipped with the handling cylinder which makes a threshing device the axis | shaft in the front-back direction of a body, it has an axial center in the horizontal direction, and is arrange | positioned in parallel in the front-back. The first rotor and the second rotor may be provided.

  First, the overall structure of the combine will be outlined below. As shown in FIG. 1, the combine in the present embodiment has a body frame 13 disposed on a crawler type traveling device 1, and a cabin 17 disposed on a front portion of the body frame 13. An engine (not shown) is placed on the upper right of the front part of the machine frame 13, a Glen tank (not shown) is arranged behind the cabin 17, and the grain tank is discharged from the grain tank from the rear part to the front. A discharge auger 15 is arranged.

  A reaping device 8 is disposed in front of the body frame 13, and a threshing device 18 is disposed on the upper left side. A conveying device 9 is disposed between the reaping device 8 and the threshing device 18. This conveyor device 9 is provided with a conveyor 11 inside the feeder house 10, communicated with the rear end of the reaping device 8 and the front entrance of the threshing device 18, and the cereals harvested by the reaping device 8 are transferred to the threshing device. It is comprised so that it may be conveyed to 18.

  A platform 2 is provided in the front part of the feeder house 10, a lateral feed auger 3 is arranged in the left-right direction perpendicular to the traveling direction on the platform 2, and a cutting part 4 is laterally installed in the lower front part of the lateral feed auger 3. Yes. Weeding boards 7 and 7 are disposed at the front ends of the left and right sides of the platform 2, respectively, and the rear portions of the support arms 6 on which the reels 5 are horizontally mounted are pivotally supported at the left and right ends of the platform 2. On one side of the left and right, a power transmission mechanism including a reel rotation driving belt and pulley is provided. The reel 5 is moved up and down by a hydraulic cylinder (not shown) as an actuator interposed between the support arm 6 and the platform 2. The feeder house 10 is connected to the other end of the drive cylinder 31 connected at one end to the front part of the machine body, and is configured to be rotatable in the vertical direction as the drive cylinder 31 expands and contracts.

  The platform 2 is supported by a cutting frame 33, and a cutting portion 4 is disposed in the left-right direction at a front end portion of the cutting frame 33, and the cutting portion 4 is configured to be able to cut the grain. A second mower 34 as a second mowing part is disposed behind the mowing frame 33 via left and right fixing members 35 and 36 (see FIGS. 2 and 3). The cutting part 4 and the second mower 34 are formed with cutting blade parts 27 and 42, respectively, and the second mower 34 removes the residue remaining after the mowing by the cutting part 4 from the root by the cutting blade part 42. It is configured so that it can be reaped.

  In the threshing device 18, a handling cylinder 30 having screws 32, 32... Attached to the circumferential surface in a handling chamber 25 is horizontally provided in the front-rear direction, and the cereal threshing is performed by the handling cylinder 30. A sorting device 19 is arranged below the handling cylinder 30 via a receiving net (or concave) 26, and sorting of cereals is performed. The sorting device 19 is composed of a swinging main body 20 having a chaff sheave, a tang 21, a first conveyor 22, a second conveyor 23, etc. arranged in order from the front side below the swinging main body 20. Grain selection is performed.

  The combine configured as described above is weeded by the weed boards 7 and 7, the kernel is scraped by the rotation of the reel 5, the kernel is cut by the cutting unit 4, and the harvested crop is laterally fed to the auger 3, the machine body is laterally fed to the left and right substantially central side, and is conveyed rearward by the conveyor 11 from the front end of the central feeder house 10 and supplied to the threshing device 18. The supplied grain mash is threshed by the handling cylinder 30 in the threshing apparatus 18, and the grains (such as cocoons) leaked by the receiving net 26 are sorted by the sorting apparatus 19, the most of which is in the Glen tank. The second product is put into the front halfway position of the threshing device 18 and subjected to re-sorting.

  Next, the reaping device 8 according to the present embodiment will be described in detail below. As shown in FIGS. 2 and 3, the reaping device 8 is provided with the reaping portion 4 supported in front of the reaping frame 33 as described above, and the rear of the reaping frame 33 via the fixing members 35 and 36. Second mower 34 is configured. The second mower 34 will be described. The right cutting blade case 43 is pivotally supported at the rear ends of the parallel links 37 and 38 whose front ends are pivotally connected to the upper and lower portions of the fixing member 36 on the right side of the cutting device 8. The end of the cylinder rod 45a of the cylinder 45 is rotatably fixed to the inner surface of the right cutting blade case 43, and the cylinder 45 is fixed to a reinforcing frame 46 provided in the left-right direction of the machine body. ing. The cylinder rod 45a of the cylinder 45 is expanded and contracted, the parallel links 37 and 38 are rotated in the vertical direction, and the right cutting blade case 43 is moved up and down. A transmission case 44 is pivotally supported on the outer surface of the parallel link 38 at the outer position of the right cutting blade case 43, and the transmission case 44 is interlocked with the right cutting blade case 43 and the front end of the parallel link 38. It is comprised so that rotation is possible centering on.

  On the left side of the cutting device 8, a left cutting blade case 49 is pivotally supported at the rear ends of parallel links 47 and 48 whose front ends are pivotally connected to the upper and lower portions of the fixing member 35. An end of a cylinder rod 50a of the cylinder 50 is rotatably fixed to the inner surface of the parallel link 48, and the cylinder 50 is fixed to the reinforcing frame 46. Then, the cylinder rod 50a of the cylinder 50 is expanded and contracted, the parallel links 47 and 48 are rotated in the vertical direction, and the left cutting blade case 49 is moved up and down. In the present embodiment, a weed plate 60 and a take-in guide 63 are disposed on the left side of the mowing device 8, and details thereof will be described later. The left and right cutting blade cases 43 and 49 are configured substantially the same and are usually covered with a cover 54.

  As shown in FIG. 4, the left and right cutting blade cases 43 and 49 support both ends of the cutting blade portion 42 along the left and right direction of the machine body. A substrate 77 is disposed on the side surface, and a support bracket 78 protrudes substantially horizontally toward the inside of the machine body at the bottom of the substrate 77, and the cutting blade portion 42 is fixed to the support bracket 78 via a support member 79. (See FIG. 6).

  As shown in FIGS. 4 and 5, the cutting blade portion 42 is composed of a plurality of fixed blade bodies 40 arranged in the cutting width direction, and one fixed blade body 40 connected by riveting the fixed blade bodies 40 at a constant pitch. A receiving blade base 52, a large number of sliding blades 41 superimposed on the fixed blade 40 and arranged in the cutting width direction, a knife bar 53 that connects the sliding blades 41 by riveting at a constant pitch, etc. It consists of and. The sliding blade body 41 is slid while meshing with the fixed blade body 40, and is configured to reciprocate along the longitudinal direction of the cutting blade portion 42. In addition, the cutting blade part 27 comprised in the cutting part 4 is comprised substantially the same as the cutting blade part 42 which consists of the cutting blade body (fixed blade body 40, sliding blade body 41) comprised in the second mower 34. .

  Further, as shown in FIG. 6, sled sensors 51 and 51 are arranged at the lower ends of the left and right cutting blade cases 43 and 49 so as to be able to contact the ground surface. The sled type sensor 51 is urged in the ground surface (downward) direction and is attached so as to be able to rotate in the vertical direction. When the cutting height is changed due to unevenness of the ground surface, the sled sensor 51 is rotated up and down along the shape of the ground surface. It is configured to be. In the present embodiment, on the left side of the machine body, a sensor arm 83 that is interlocked with the rotation of the sled sensor 51 is fixed to the rotation shaft 81 of the sled sensor 51, and the other end of the sensor arm 83 is attached to the other end of the sensor arm 83. A sensor device 84 is configured. When the rotation of the sled sensor 51 is detected by the sensor device 84 via the sensor arm 83, the cylinders 45 and 50 are operated by a control unit (not shown) so as to keep the cutting height of the second mower 34 constant. The cutting height is automatically controlled.

  In the cutting device 8 configured as described above, in the present embodiment, in order to increase the cutting efficiency of the cedar by the second mower 34, particularly the residue after being cut by the cutting unit 4, the following configuration is provided. Has been.

  First, as shown in FIG.3 and FIG.7, the weeding board 60 as the weeding device of a cereal is projected ahead by the left-right direction one end part of the cutting blade part 42 of the second mower 34. As shown in FIG. The weed board 60 is configured to weed cereal grains (residue) in the field into and out of the cutting blade portion 42 of the second mower 34 as the machine body moves forward. In the present embodiment, the left cutting blade case is disposed at the left end portion in front of the cutting blade portion 42, specifically, the left end portion of the cutting blade portion 42, which supports the cutting blade portion 42. 49 is attached. In the left cutting blade case 49, a rigid body is constituted by a frame 61 provided along the outer frame shape and a frame such as a reinforcing frame 62 disposed substantially at the center portion. The inner reinforcing frame 62 is attached so as to protrude forward (see FIG. 6). Thus, by attaching to the reinforcement frame 62, existing parts can be used in providing the weed board 60, the number of parts can be reduced, and thus the manufacturing cost can be reduced.

  When the weed board 60 is attached to the reinforcing frame 62, the weed board 60 is formed in a substantially wedge shape in plan view, and is arranged so that the sharp portion faces the front of the body. Thus, by forming the weed board 60 in the shape of a wedge, it is possible to effectively bisect the cereal rice cake in the left-right direction while advancing the machine body, and to improve the weed performance. However, the weed board 60 is not limited to what is formed in a so-called wedge shape having a substantially isosceles triangle shape. For example, the center line of the weed board 60 may have a shape that is inclined to the outside of the aircraft. In such a case, it is possible to increase the amount of cereal husk (residue) that is sown by the weeding board 60 toward the cutting blade portion 42, and to improve the cutting efficiency.

  In addition, the weeding plate 63 is attached with an intake guide 63 configured to be weeded to the cutting blade portion 42 side while the cereal is slid in contact with the forward movement of the machine body. Specifically, the take-in guide 63 is attached to the front end of the weed board 60 via the free end portion 64. The take-in guide 63 is pivotally supported by the free end portion 64 with respect to the weed plate 60 so that the relative position cannot be varied and the movable end plate 64 is movable. For this free end portion 64, a known configuration can be applied. For example, the weed plate 60 and the take-in guide 63 may be configured by a shaft coupling member such as a universal joint, or penetrate the weed plate 60. The end of the take-in guide 63 may be inserted into the hole so as to be movably engaged.

  Here, in this embodiment, a weed ridge 66 is provided on the left side of the second mower 34. The weed ridge 66 has a front portion 66a bent in a “h” shape in plan view, a front end thereof pivotally supported by a pin shaft 65 on a cutting frame 33, and a rear portion 66b substantially perpendicularly to the body. It is bent and penetrated into a mounting hole 49a that penetrates the left cutting blade cover 49 in the left-right direction, and is pivotally supported in the mounting hole 49a. The weed sorghum 66 is configured so that the uncut cereal mash that has been cut out of the machine by the weed plate 7 formed at the front end of the cutting device 8 does not get caught in the cutting blade part 42 on the side of the second mower 34. It is arranged. By this weed cocoon 66, it is divided into an uncut grain side and a cut grain side.

  Note that the weed ridge 66 is configured to be extendable in the front-rear direction (see FIG. 8). Specifically, the front end of the rear portion 66b of the weed ridge 66 is slidably inserted into the rear end portion of the front portion 66a formed in a cylindrical shape. As described above, the second mower 34 is supported by the parallel links 37 and 38 and the parallel links 47 and 48 with respect to the main body of the reaping device 8. When the vertical position of the second mower 34 is changed, the pin shaft 65 and The separation from the mounting hole 49a varies. Therefore, the length in the front-rear direction can be adjusted in accordance with the position variation of the second mower 34 by inserting the rear part 66 b through the front part 66 a and making it extendable in the front-rear direction.

  One end of the take-in guide 63 is connected to the weed plate 60 via the free end portion 64, and the other end is disposed so as to project in an oblique direction to the front of the body in the outer direction of the body. It is engaged with the weed ridge 66 so that it can slide back and forth and rotate. That is, the take-in guide 63 extends from the front end of the weed board 60 so as to block the front space between the weed board 60 and the weed paddle 66 and is moved to the front space. Is arranged to guide the second mower toward the cutting blade portion 42 of the second mower 34. With this configuration, even if the second mower 66 is moved up and down and the weed cocoon 66 is turned up and down with respect to the weed board 60, the take-in guide 63, the weed board 60 and the weed moth 66 can always be engaged (see FIG. 8).

  The other end of the take-in guide 63 is formed in a hook shape, and is engaged with the weed ridge 66 so as to be slidable back and forth and rotatable. By making the other end of the take-in guide 63 into a hook shape, engagement / disengagement with the weed ridge 66 is simplified, and processing and formation are facilitated. When it is formed in a hook shape, the end of the take-in guide 63 is bent after contacting the weed ridge 66. However, the shape of the other end is not limited to this. That is, as described above, it is constructed between the weed ridge 66 and the weed board 60 in conjunction with the weed ridge 66 that can be expanded and contracted in the front-rear direction in response to the vertical movement of the second mower 34. Any shape is possible.

  This take-in guide 63 causes the take-up guide 63 to abut on the take-up guide 63 until the cut-off portion 4 of the second mower 34 reaches from the cut-off portion 4 with the advancement. Thus, it is configured to weed in the direction of the cutting blade portion 42. Therefore, it is preferable that the take-in guide 63 is formed in a columnar shape or a cylindrical shape having a substantially circular cross section at a contact portion with the residue. Here, the abutting portion of the take-in guide 63 is a portion excluding at least both ends, and the cereals that have come into contact with the take-in guide 63 are guided along the take-in guide 63 to cut the second mower 34. The contact part along the longitudinal direction until reaching the blade part 42 is said. The shape of the contact portion may be chamfered substantially evenly so that the outer peripheral surface thereof becomes smooth. By adopting such a shape, the cereal can be smoothly guided and the cereal is not caught or cut off by the take-in guide 63.

  As described above, by providing the weed plate 60 and the take-in guide 63 in the second mower 34, the remaining mower is reliably cut in the second mower 34, and the uncut cereal pod is reliably weeded to increase the cutting efficiency. Can be improved. That is, in the present embodiment, by arranging the weed plate 60 which is the left end portion of the cutting blade portion 42 and protrudes toward the front of the machine body, the residues left by the cutting blade portion 27 are removed. The weeding blade 63 is divided into the inside and outside of the cutting blade 42 to securely cut them, and the taking-in guide 63 is projected from the end of the weeding plate 60 to the front outside the machine body. The grain culm can be guided in the direction of the cutting blade portion 42 to improve the cutting efficiency.

  That is, among the cereals that have been weeded by the weeding pestle 66, when the culm on the side of the reaping device 8 is cut by the cutting blade part 27 of the reaping part 4, the residue remains unrepressed, so that the remaining part goes to the outside of the body. Also spread. The remnants spreading outside the aircraft will be used as an underlay for the weed board 60 or the like as the aircraft advances, or a residue that will be weeded out by the weed board 60 may be generated. Or By providing the take-in guide 63 as in the present invention, the spread residue can be brought back inward, guided further inward by the weed board 60, and cut by the cutting blade portion 42 of the second mower 34. Can do it. In this way, almost all of the residue can be cut off, and the finish can be cleaned.

  In particular, in the cutting device 8, the cutting blade portion 27 and the cutting blade portion 42 arranged in the cutting portion 4 and the second mower 34 are more in the cutting blade portion 27 (of the cutting portion 4) (of the second mower 34). ) The length in the longitudinal direction is larger than that of the cutting blade portion 42. Therefore, by providing such a weed board 60 and the take-in guide 63 on the left side of the second moor 34, on the side of the second moor 34, it is possible to prevent the cereals from being caught or the ears being cut off, Cutting efficiency can be improved.

The left view which showed the whole structure of the combine provided with the cutting device which concerns on this invention. The right view of a cutting device. The left view of a reaping device. The top view of the cutting-blade part in 2nd more. AA arrow sectional drawing of FIG. Left side view of Secondmore. The enlarged plan view of the left end part of the cutting-blade part in 2nd more. The figure which shows the up-and-down raising / lowering state of the second mower in a cutting device.

8 Mowing device 33 Mowing frame 34 Second mower 42 Mowing blade 60 Dividing blade 63 Taking-in guide

Claims (2)

Reaper forward fuselage device (8) is vertically movable vertically projected, in the cutting apparatus of combine the second mower (34) is vertically movable up and down disposed to the rear of該刈winding device (8), the second mower ( 34) disposes a weed plate (60) on one side of the cutting blade (42), and the weed plate (60) is formed in a substantially wedge shape in plan view, and projects a sharp portion forward of the aircraft. And the weed plate (60) protrudes forward from a part of the reinforcing frame (62) constituting the cutting blade case (49) on one side of the second mower (34), At the front end of the weed board (60), a take-in guide (63) protrudes toward the front outside the machine body, and the take-up guide (63) is pivoted so that the rear end is movable to the weed board (60). The front end is slidably and freely engaged with the weed ridge (66) provided on the side of the cutting device (8). The weed fold (66) is pivotally supported by the cutting frame (33) constituting the cutting device (8) so that the front part (66a) is pivotable in the vertical direction, and the rear part (66b) is the cutting blade. A combine harvester, characterized in that it is pivotally supported by a case (49) so as to be pivotable in the vertical direction and is extendable in the front-rear direction . The combine harvesting device according to claim 1, wherein the take-up guide (63) is guided along the take-up guide (63) so that the cereal abuts against the take-up guide (63), Combine harvester characterized in that the portion of the second moor (34) along the longitudinal direction until reaching the cutting blade portion (42) is formed in a columnar shape or a cylindrical shape in which the outer peripheral surface of the cross section is substantially circular. apparatus.

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