JP2015107076A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping device for a combine harvester in which recombination of a front frame of a reaping device is simplified, and the support rigidity of the front frame is enhanced.SOLUTION: At a front end part of a rear frame (28) and a rear end part of a front frame (30), end faces (67A, 67B) in a left and right direction are formed respectively. At a rear-side upper part of the front frame (30), an engaging part (65) having a downwardly opened cross-sectional shape is formed. The end face 67B formed at the rear end part of the front frame (30) and the end face 67A formed at the front end part of the rear frame (28) are brought into contact with each other. While the engaging part (65) is in a state of being fitted from above to a front-side upper part of the rear frame (28), the front frame (30) and the rear frame (28) are connected.

Description

  The present invention relates to a combine harvester.

  Conventionally, the front part of a table having a reel, a cutting blade and an auger can be exchanged between a first unit and a second unit in which the position of the cutting blade is changed back and forth. The structure provided with the device is known (Patent Document 1).

JP 2011-177082 A

  In the known example, the side plate of the rear table portion and the side plate of the front table portion are overlapped on the left and right and fixed by the horizontal axis (lateral bolt), so the bolts are tightened with the front table portion supported. There is a problem that it is not easy to attach and detach and replace.

Further, a gap for absorbing manufacturing errors is required between the edge of the side plate of the rear table portion and the edge of the side plate of the front table portion, and there is a problem that the support rigidity of the load in the front-rear direction is low.
In the present application, the replacement work between the first unit and the second unit is facilitated, and the mounting strength is improved.

The invention which solved the problem of the present invention is as follows.
The invention according to claim 1 is provided on the front side of the threshing device (3), and a weed body (29) for weeding the cereal, a reel (12) for scraping the cereal, and a cutting blade for cutting the cereal (13) In the combine harvester provided with the auger (8) for conveying the harvested culm, after connecting the left and right first side plates (6) and the rear portions of the left and right first side plates (6) Bucket-shaped rear portion having a plate (10), a first bottom plate (9) for connecting a lower portion of the left and right first side plates (6) and a lower portion of the rear plate (10) and having the auger (8) installed therein A frame (28) and a front frame (30) connected to a front end of the rear frame (28), and a front end of the rear frame (28) and a rear end of the front frame (30) The left and right end faces (67A, 67B) are formed respectively, and the rear side of the front frame (30) An engaging portion (65) having a cross-sectional shape opened downward is formed in the portion, an end surface (67B) formed at the rear end portion of the front frame (30), and the rear frame (28) The front frame (30) is in contact with the end surface (67A) formed at the front end of the front frame, and the engaging portion (65) is fitted to the front upper portion of the rear frame (28) from above. And a rear frame (28) are connected to each other.

  In the invention according to claim 2, as the front frame (30), a first unit (31) provided with the weed body (29) in a front portion of a side plate, and a front side of the first bottom plate (9). The second bottom plate (9A) is provided with a continuous second bottom plate (9A), the lower portions of the second side plate (6A) are connected to the left and right ends of the second bottom plate (9A), and the weed body ( 29) is provided, the second unit (32) is provided, the first unit (31) is connected to the front portion of the rear frame (28), and the cutting blade (13) is connected to the first bottom plate (9). ) And the second unit (31) connected to the front part of the rear frame (28), and the cutting blade (13) is attached to the front end part of the second bottom plate (9A). The combine harvester according to claim 1, wherein the combine harvester is configured to be recombined into a separated state.

  According to a third aspect of the present invention, the rear frame (28) includes a transmission portion (27) to which the driving force of the engine is transmitted, and the first unit (31) is connected to the front portion of the rear frame (28). The cutting blade (13) is attached to the front end of the first bottom plate (9), the second unit (31) is connected to the front of the rear frame (28), and When the cutting blade (13) is rearranged to the state where it is attached to the front end of the second bottom plate (9A), two transmission shafts (26) having different axial lengths are alternatively used as the transmission portion. The combine mowing device according to claim 2, which is mounted between the cutting blade (13) and the cutting blade (13).

  According to a fourth aspect of the present invention, there is provided a cutting device for weed cutting (35) that cuts and separates the harvested culm and the non-harvested culm at the side portion in the left-right direction of the second unit (32). A combine harvester as claimed in claim 2 or claim 3 comprising:

  In the invention according to claim 5, the lower part of the cutting device for weeds (35) is connected to the second side plate (6A), and the upper part of the cutting device for weeds (35) is connected to the support frame (41). The harvesting device for a combine according to claim 4, wherein the harvesting device is connected to the first side plate (6).

  According to a sixth aspect of the present invention, a transmission shaft (26) for transmitting engine power to the weed cutting device (35) passes between the first side plate (6) and the support frame (41). 6. The combine harvester according to claim 5, wherein the combine harvester extends in the front-rear direction.

  The invention according to claim 7 is characterized in that the cutting blade (13) is formed from the opening (72A) formed in the side portion of the front frame (30) or the rear frame (28), and the first side plate (6). A cutting blade that slides to a position that protrudes further outward than the first side plate (6), and that prevents the non-harvested grain culm from being cut by the cutting blade (13) that protrudes to a position outside the first side plate (6). The combine harvester according to any one of claims 1 to 3, further comprising a guard (72).

  According to the first aspect of the present invention, the end surface (67B) formed at the rear end portion of the front frame (30) and the end surface (67A) formed at the front end portion of the rear frame (28) contact each other. In addition, since the front frame (30) and the rear frame (28) are connected in a state where the engaging portion (65) is fitted to the front upper portion of the rear frame (28) from above, the front frame ( The work of connecting 30) to the rear frame (28) can be facilitated. Further, the attachment strength can be increased by attaching the front frame (30) and the rear frame (28) without any gap.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, when the first unit (31) is mounted as the front frame (30), it is scraped with the reel (12). When the cereal is cut with the cutting blade (13), the cutting posture is improved, the cutting efficiency of the cutting blade (13) is improved, and the second unit (32) is mounted as the front frame (30) For the length of the second bottom plate (9A), the cutting blade (13) located in front cuts the stock of the cereal, and the reel (12) stirs the cut cereal, The resistance when the reel (12) is scraped toward the auger (8) is reduced, and the cutting operation is smooth.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, the first unit (31) is connected to the front part of the rear frame (28), and the cutting blade (13) is attached to the first part. 1 The state attached to the front end of the bottom plate (9) and the second unit (31) are connected to the front portion of the rear frame (28), and the cutting blade (13) is connected to the front end of the second bottom plate (9A). Since the two transmission shafts (26) having different axial lengths are alternatively mounted between the transmission portion (27) and the cutting blade (13) when recombining with the attached state, The recombination work of the first unit (31) and the second unit (32) can be easily performed.

  According to invention of Claim 4, in addition to the effect by the invention of Claim 2 or Claim 3, in the side part in the left-right direction of the 2nd unit (32), the harvesting target non-reaching target kernel Since the cutting device (35) for weeding which cuts and isolate | separates is provided, a grain straw can be efficiently weeded and the scraping resistance of a reel (12) can be made still smaller.

  According to the invention of claim 5, in addition to the effect of the invention of claim 4, the lower part of the cutting device for weeds (35) is connected to the second side plate (6A), and the cutting device for weeds Since the upper part of (35) is connected to the first side plate (6) by the support frame (41), the cutting device for weeds (35) is firmly supported, and the reaping target culm and the non-reaching target culm Can be reliably separated.

  According to the sixth aspect of the invention, in addition to the effect of the fifth aspect of the invention, the transmission shaft (26) for transmitting engine power to the weed cutting device (35) includes the first side plate (6). And the support frame (41) are extended in the front-rear direction, so that obstacles outside the machine and the transmission shaft (26) can be prevented from contacting or being damaged.

  According to invention of Claim 7, in addition to the effect by the invention as described in any one of Claims 1 to 3, the cutting blade (13) is more than the first side plate (6) from the opening (72A). A cutting blade guard (72) configured to slide to a position protruding to the outside and preventing the non-cutting target culm from being cut by the cutting blade (13) protruding to a position outside the side plate (6). Therefore, the harvesting target culm introduced between the right and left weed bodies (29) can be reliably cut, and the non-reaching target culm can be prevented from being cut.

The side view of a combine. The side view of the front table part used as the 1st unit. FIG. The side view of a rear table part. The front view of the same part. The side view of the cutting device which attached the 2nd unit. The front view of the same part. The side view of the front table part used as the 2nd unit. FIG. Schematic of a transmission mechanism. The side surface and top view of a transmission shaft. The side surface and top view of the other Example of a transmission shaft. The side surface and top view of the other Example of a transmission shaft. The side surface and top view of the other Example of a transmission shaft. The partial omission front view of the other Example of the cutting device for weeds. The side view of the cutting device which attached the 2nd unit. The partial omission front view of the other Example of the cutting device for weeds. The partial omission front view of the other Example of the cutting device for weeds. The side view of the 1st unit which provided the cutting blade guard. The side view of the 2nd unit which provided the cutting blade guard. The front view and side view of the reel tine of a take-in reel.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a body frame, 2 a traveling device provided at the lower part of the body frame 1, 3 a threshing device provided on the body frame 1, 4 a reaping device, and 5 a glen. A tank 7 is a control unit provided on one side in front of the threshing device 3.

  The reaping device 4 includes left and right side plates (“first side plate” in claims) 6, a bottom plate (“first bottom plate” in claims) 9 positioned below an auger 8, which will be described later, and left and right side plates 6 and bottom plate. A table 11 constituted by a rear plate 10 provided so as to be connected to 9 is provided.

  The table 11 is provided with a reel 12, a cutting blade 13 and the auger 8. A front end of the transport elevator 14 is attached to the rear of the table 11, and a base of the transport elevator 14 is connected to a threshing chamber of the threshing device 3. To do.

  The cutting blade 13 includes a lower blade (not shown) fixed in a cutting blade frame (not shown) on the table 11 side and an upper blade (not shown) that reciprocally slides left and right. An engagement groove (not shown) is provided on the rear surface side of the upper blade, and a roller (not shown) at the tip of the rod 25 provided at the lower end of the arm 24 (FIG. 7) is engaged with the engagement groove.

  The arm 24 is detachably attached to the front end of a transmission shaft 26 in the front-rear direction. A base portion of the transmission shaft 26 is attached to a conversion mechanism 27 (“transmission portion” in claims). The conversion mechanism 27 converts the constant direction rotation transmitted from the engine into a forward / reverse reciprocating rotational motion (FIG. 10).

  Thereby, the rotation from the engine is converted into forward and reverse rotation by the conversion mechanism 27 and transmitted to the transmission shaft 26. The transmission shaft 26 reciprocates the tip of the arm 24 left and right, and the arm 24 reciprocates and slides the upper blade left and right.

  The harvesting device 4 of the present application is configured to combine rice wheat harvesting and rapeseed harvesting. The table 11 is configured to be divided into a rear table portion (“rear frame” in the claims) 28 having the auger 8 and a front table portion (“front frame” in the claims) 30 having a weed body 29. The front table portion 30 is configured to be exchangeable with each of the first unit 31 and the second unit 32.

In the present application, the first unit 31 is used for harvesting rice and the second unit 32 is used for rapeseed harvesting.
When the first unit (rice wheat cutting unit) 31 is mounted on the cutting device 4 as the front table portion 30, the cutting blade 13 is provided at the front end of the bottom plate 9 of the rear table portion 28. On the other hand, when the front table portion 30 is the second unit (rapeseed cutting unit) 32, the cutting blade 13 is attached to the front end of the extended bottom plate ("second bottom plate" in the claims) 9A of the second unit 32. The cutting blade 13 is positioned in front of the extended bottom plate 9A of the second unit 32 by a length corresponding to the front and rear of the rice wheat harvesting.

  Thereby, in the harvesting operation of rice wheat, the cutting blade 13 can be cut and the cutting performance can be improved by cutting the cereal rice cake that has been caused by the reel 12 and raked (sown) with the cutting blade 13. On the other hand, in the rapeseed harvesting operation, the diameter of the cereal cocoon is thick and has a stock shape. Therefore, the rapeseed cereal cocoon cut by the cutting blade 13 disposed in front can be guided to the auger 8 by the reel 12, and the reaping operation is performed. Can be performed smoothly.

  When the second unit 32 is mounted on the reaping device 4 as the front table portion 30, the left side of the reel 12 has a reaped cereal and an unreached cereal culm in order to weed the uncut cereal entangled with the reaped cereal. It is preferable to provide a weed cutting device 35 for cutting and cutting. This weed cutting device 35 is configured by attaching a cutting blade 37 to a cutting machine frame 36.

A separate arm 38 is provided at the tip of the transmission shaft 26, and a rod 40 is provided between the arm 38 and the drive unit 39 of the cutting blade 37.
The tip of the support frame 41 is attached to the cutting machine frame 36 of the weed cutting device 35, and the base of the support frame 41 is detachably attached to the outer surface of the side plate 6 of the rear table portion 28. In FIG. 7, the support frame 41 overlaps with the cutting machine frame 36 in the front-rear direction, and therefore, the same member is given a different reference for easy understanding.

  The transmission shaft 26 is disposed between the support frame 41 and the side plate 6. Thereby, the left-right width of the reaping device 4 is reduced. Moreover, since the cutting device 35 for weeds receives transmission from the transmission shaft 26 which carries out rotation transmission to the cutting blade 13, a structure becomes simple.

Further, along with the replacement of the first unit 31 and the second unit 32, a long and short transmission shaft 26 is prepared, and the transmission shaft 26 is replaced.
The yoke portion 43 at the base portion of the transmission shaft 26 is configured to be divided and assembled in the front-rear direction (FIG. 11), and the yoke portion 43 is divided and the transmission shaft 26 is attached to and detached from the conversion mechanism 27 for replacement. This facilitates the replacement work of the transmission shaft 26.

  That is, by dividing the transmission shaft 26, the second unit 32 can be attached to the table 11 with the weed cutting device 35 attached without removing the weed cutting device 35 from the second unit 32. Since it suffices to remove it from the rear table portion 28, the replacement work between the first unit 31 and the second unit 32 becomes easy.

  FIG. 12 shows another embodiment of the transmission shaft 26, wherein the transmission shaft 26 is configured to be divided and assembled into the yoke portion 43 and the shaft portion 44, and the shaft portion 44 is attached to and detached from the yoke portion 43 for transmission. The shaft 26 can be exchanged.

  FIG. 13 shows another embodiment of the transmission shaft 26. The transmission shaft 26 has a yoke portion 43 and a shaft portion 44. The shaft portion 44 is divided at a predetermined portion in the front-rear direction, and the shaft portion is divided at the front and rear. 44 can be connected by a joining member (joint member) 45.

  That is, the length of the transmission shaft 26 is switched in accordance with the position of the cutting blade 13 by exchanging a predetermined shaft portion 44. With such a configuration, the first unit 31 and the second unit 32 The number of parts required for recombination can be reduced and the cost can be reduced.

  In this case, the length corresponding to the cutting blade 13 at the rapeseed cutting position via the joining member 45 at the tip of the shaft portion 44 of the transmission shaft 26 having a length corresponding to the cutting blade 13 at the rice wheat cutting position. Alternatively, a configuration may be adopted in which a separately prepared shaft portion 44A is added (FIG. 14).

The support frame 41 is fixed through the support portion 48 of the vertical cylinder 47 of the reel 12 (FIG. 6).
Thereby, the left-right width of the reaping device 4 is reduced, and the support rigidity of the support frame 41 is improved because the front table portion 30 is a rigid body.

  Moreover, the cutting apparatus 35 for weeds may incline so that the cutting blade 37 may be located outside as it goes up (FIG. 15). When the cutting blade 37 is inclined outward, the lower portion of the cutting blade 37 can be brought closer to the reel 12, so that the weeding action is improved.

Further, the cutting blade 37 can be constituted by a pair of moving blades 37 provided with a fixed blade interposed therebetween (FIG. 16).
According to this configuration, the pair of moving blades 37 alternately slide in the vertical direction with respect to the fixed blade, so that the cutting performance is improved, and as a result, the weeding performance is improved.

  The arm 38 is formed to have a predetermined length in the left-right direction, and the left and right intermediate portions of the arm 38 are attached to the transmission shaft 26 (FIG. 16). That is, the left and right cutting blades 37 are driven by one arm 38. A rod 40 is provided at each of the left and right ends of the arm 38, and the rod 40 is connected to each drive unit 39 of the left and right cutting blades 37.

Thereby, the cycle of the vertical movement of the left and right cutting blades 37 is synchronized, and vibration is reduced.
An inner guide 52 is provided between the weed cutting device 35 and the reel arm 51 or the reel frame 51A of the reel 12 (FIGS. 7 and 15).

As a result, the crops weeded by the weed cutting device 35 can be brought to the reel 12, and the scraping performance by the reel 12 is improved.
Further, the inner guide 52 is inclined so as to be located inside as it reaches the rear in plan view.

Further, a partition plate 53 is provided outside the cutting machine frame 36 and the cutting blade 37 (FIG. 6).
This prevents the uncut crops that have been weeded by the weed cutting device 35 from being entangled with the harvested cereal meal again.

Further, if the inner guide 52 and the partition plate 53 are configured by one component, the configuration is simplified.
The inner guide 52 projects a portion located below the reel arm 51 inward from the reel arm 51 (FIGS. 7 and 15).

Thereby, the guidance guide performance to the inner side of the table 11 by the inner side guide 52 improves.
Further, the lower part from the reel arm 51 protrudes inward from the reel arm 51 to be an inner guide 52, and the upper part from the reel arm 51 is positioned to the outer side from the reel arm 51 to be a partition plate 53.

  That is, since the reel 12 moves up and down, the inner guide 52 below the reel arm 51 at the lowest position where it does not interfere with the reel arm 51 protrudes inward from the reel arm 51.

  FIG. 18 shows another embodiment of the weed cutting device 35, in which a crank rod is provided at a position eccentric from the rotation shaft in the input pulley 55 to which engine power is input, and the cutting blade 37 is driven by this crank rod. A cover 57 is provided on the side of the drive unit 39 of the cutting blade 37, the input pulley 55, and the belt wound around the input pulley 55.

Thereby, the side part of the drive part of the weed cutting device 35 and the reel 12 can be covered with the integral cover 57, and it prevents that an uncut mowing is entangled.
The weeding body 29 provided at the tip of the side plate 6 of the table 11 is provided with a shaft rod-shaped guide body 60, and the guide body 60 is inclined so as to be positioned on the upper side and the outer side as it goes rearward, so that the cover 57 Is provided with an inclined surface portion 61 having substantially the same inclination in plan view relative to the guide body 60 (FIG. 17, the inclined surface portion 61 is hatched for ease of understanding. Not limited).

  The uncut shears that have been weeded by the weeding body 29 are guided to the outside by the inclined surfaces 61 of the guide body 60 and the cover 57, so that the uncut shears are entangled with the cutting parts for the weed cutting 35 and the drive parts of the reel 12. It is prevented.

  As described above, the table 11 includes the front unit 30 that is detachable with respect to the rear table unit 28 as the first unit 31 and the second unit 32 in which the attachment positions of the cutting blades 13 are changed, Either the unit 31 or the second unit 32 is attached to the rear table portion 28.

  At the upper rear side of the extension side plate (the “second side plate” in the claims) 6 </ b> A of the front table portion 30, an engagement portion 65 that fits from above to the upper surface of the side plate 6 of the rear table portion 28 is connected to the extension side plate 6 </ b> A. Provide one. The engaging portion 65 is a “U” -shaped member whose cross section is opened downward, and protrudes rearward from the contact surface between the extension side plate 6 </ b> A of the front table portion 30 and the side plate 6 of the rear table portion 28. Yes. The engagement portion 65 is fitted from above to the rear engagement portion 65A of the upper surface of the side plate 6 of the rear table portion 28, and is fixed by a bolt 66.

  Thereby, the engaging portion 65 of the front table portion 30 is fixed to the upper surface of the rear engaging portion 65A of the rear table portion 28 by the bolt 66, so that the mounting strength of the engaging portion 65 and the rear engaging portion 65A is improved. In addition, assembly of the front table portion 30 and the rear table portion 28 is facilitated.

At the rear end portion of the extended side plate 6 </ b> A of the front table portion 30, a horizontal contact flat surface (“end surface” in the claims) 67 </ b> B that is bent in a direction intersecting the side plate 6 is formed.
Similarly, the rear end portion of the side plate 6 of the rear table portion 28 is formed with a horizontal contact flat surface (an “end surface” in the claims) 67A bent in the direction intersecting with the side plate 6.

The abutting flat surface 67B of the front table portion 30 and the abutting flat surface 67A of the rear table portion 28 are brought into contact with each other in the front-rear direction, and both are fixed by bolts 68.
In this way, the rear upper portion of the extension side plate 6A of the front table portion 30 is fixed to the upper surface of the rear table portion 28 by the engaging portion 65, and the contact flat surface 67B of the rear edge of the extension side plate 6A of the front table portion 30 is fixed. Is brought into contact with the abutting flat surface 67A of the front edge of the rear table portion 28, so that the weight of the front table portion 30 can be supported by the two portions of the engaging portion 65 and the abutting flat surfaces 67A and 67B. Strength is improved.

In addition, in order to understand easily, the code | symbol is attached | subjected to the part which mounts the bolts 66 and 68 for fixation.
Lower mounting portions 70 that protrude rearward and have lower mounting holes 69 are respectively provided at the rear lower portions of the left and right extension side plates 6A of the front table portion 30.

  When the first unit 31 is mounted as the front table portion 30, the cutting blade 13 is provided at the front end of the bottom plate 9 of the rear table portion 28. On the other hand, when the second unit 32 is mounted as the front table portion 30, the extended bottom plate 9A is connected to the front end portion of the rear table portion 28, and the cutting blade 13 is attached to the front end portion of the extended bottom plate 9A. Thus, when the 2nd unit 32 is mounted | worn as the front table part 30, the cutting blade 13 is located ahead of the front-back length of 9 A of extended bottom plates rather than the 1st unit 31. FIG.

  As a result, in the rice wheat harvesting operation, the cutting blade 13 is cut with the cutting blade 13 in the state of being scraped (crawled) by the reel 12, and thus the cutting posture is improved and the cutting performance is improved. In the rapeseed cutting operation, the cutting blade 13 positioned in front of the length of the extended bottom plate 9A cuts the stock of the culm while the reel 12 rakes the culm so that the scraping resistance of the reel 12 is reduced. While reducing, it can guide to the auger 8 in the table 11, and a cutting operation becomes smooth.

  Further, a lower mounting surface 71 is formed at the front end of the bottom plate 9 of the rear table portion 28. In the case of the first unit 31, a cutting blade frame (not shown) of the cutting blade 13 is attached to the lower mounting surface 71. In the case of the second unit 32, the rear end surface of the extended bottom plate 9A of the front table portion 30 and the lower portion of the extended side plate 6A. Is fixed to the lower mounting surface 71 of the bottom plate 9 of the rear table portion 28 with bolts 68.

  Further, after the rear upper portion of the front table portion 30 is fixed to the upper surface of the rear engagement portion 65A of the rear table portion 28 by the engagement portion 65, the contact flat surface 67B of the front table portion 30 is fixed to the rear table portion. Since it is only necessary to abut on the abutting flat surface 67A of the 28 and fix with the bolt 68, the attaching operation becomes easy, and the front table portion 30 and the rear table portion 28 can be exchanged by one person.

  Although illustration is omitted, a portion of the rear table portion 28 corresponding to the attachment hole of the engagement portion 65 of the extension side plate 6A of the front table portion 30 is engaged with the attachment hole. An engagement pin may be provided. If it does in this way, positioning of the front table part 30 and the rear table part 28 will become easy, and an assembly operation will be made still easier.

  Further, when the second unit 32 is mounted on the rear table portion 28, the lower part of the cutting machine frame 36 of the weed cutting device 35 on the left side of the reel 12 of the reaping device 4 is the extended side plate of the front table portion 30. The lower part of the support frame 41 attached to the 6A side and having the tip attached to the upper part of the cutting machine frame 36 is detachably attached to the side plate 6 side of the rear table portion 28.

  Therefore, when the base portion of the support frame 41 is removed from the side plate 6 side of the rear table portion 28, the front table portion 30 can be detached from the rear table portion 28 together with the weed cutting device 35, and attachment / detachment is facilitated.

  The cutting blade 13 is configured to slide from the opening 72 </ b> A of the side plate 6 of the table 11 to the outside of the non-cut grain culm side, thereby preventing uncut cereals in the table 11. In this way, the cutting blade 13 moves to the outside of the side plate 6, and the cutting blade guard 72 prevents the cutting blade 13 from cutting the uncut cereal grains outside the side plate 6 of the table 11. .

The cutting blade guard 72 is attached to the side plates 6 of the first unit 31 and the second unit 32.
A guide body 74 that protrudes downward is provided at a portion of the extended bottom plate 9A of the second unit 32 in front of the crawler 73 of the traveling device 2.

  In rapeseed cutting, the cut stock that has been cut and left in the field is hard, and there is a risk of damage if the crawler 73 steps on the cut stock, so that it projects downward to the extended bottom plate 9A of the second unit 32 in front of the crawler 73. A guide body 74 is provided.

Thereby, since the guide body 74 crushes the cut stock which remained in the field, damage to the crawler 73 is prevented.
FIG. 21 relates to the reel tine 75 of the reel 12. The reel tine 75 is connected to the rear surface of the slat bar 78 for connecting the upper portions of the pair of left and right tine portions 76 with the connecting portion 77 and attaching the reel tine 75 to the connecting portion 77. An engaging portion 79 is provided for abutting engagement.

  In the reel tine 75, the tine portion 76 is inserted into a mounting hole (not shown) of the slat bar 78, the upper portion of the connecting portion 77 is brought into contact with the upper surface of the reel tine 75, and the rear surface of the slat bar 78 is engaged in this state. The portion 79 is elastically contacted and engaged.

Therefore, the reel tine 75 can be attached without a tool, and the reel tine 75 is firmly supported because it is supported by the connecting portion 77 and the engaging portion 79.
Each of the above-described embodiments is illustrated and described separately or mixed for easy understanding. However, these embodiments can be combined in various ways, and these expressions can be used for configuration and operation. However, there is a case where a synergistic effect is obtained.

3 Threshing device 4 Mowing device 6 Side plate (first side plate)
6A Extension side plate (second side plate)
8 Auger 9 Bottom plate (first bottom plate)
9A Extension bottom plate (second bottom plate)
10 Rear plate 12 Reel 13 Cutting blade 26 Transmission shaft 28 Rear table portion (rear frame)
29 herbaceous body 30 front table (front frame)
31 1st unit 32 2nd unit 35 Cutting device 41 for weeds Support frame 65 Engagement part 67A Contact flat surface (end surface)
67B Contact flat surface (end face)
72 Cutting blade guard

Claims (7)

A weeding body (29) for weeding the cereal, a reel (12) for scraping the cereal, a cutting blade (13) for harvesting the cereal, and a harvested cereal Combine harvester with an auger (8) for conveying
Left and right first side plates (6), a rear plate (10) connecting the rear portions of the left and right first side plates (6), a lower portion of the left and right first side plates (6), and a lower portion of the rear plate (10) A bucket-like rear frame (28) having a first bottom plate (9) for connecting the auger (8),
A front frame (30) connected to the front end of the rear frame (28);
Left and right end surfaces (67A, 67B) are formed at the front end of the rear frame (28) and the rear end of the front frame (30), respectively, and at the rear upper part of the front frame (30). An engagement portion (65) having a cross-sectional shape opened downward is formed;
The end surface (67B) formed at the rear end portion of the front frame (30) and the end surface (67A) formed at the front end portion of the rear frame (28) are in contact with each other, and the engagement portion ( 65. A combine harvester, wherein the front frame (30) and the rear frame (28) are connected in a state in which 65) is fitted onto the front upper part of the rear frame (28) from above. As the front frame (30),
A first unit (31) provided with the weed body (29) in the front part of the side plate;
A second bottom plate (9A) continuous to the front side of the first bottom plate (9) is provided, and the lower portions of the second side plate (6A) are connected to the left and right ends of the second bottom plate (9A), and the second side plate A second unit (32) configured by attaching a weed body (29) to the front of (6A) is provided,
The first unit (31) is connected to the front portion of the rear frame (28), and the cutting blade (13) is attached to the front end of the first bottom plate (9);
The second unit (31) is connected to the front portion of the rear frame (28), and the cutting blade (13) is reconfigured to be attached to the front end of the second bottom plate (9A). The combine harvester according to claim 1. The rear frame (28) includes a transmission portion (27) to which the driving force of the engine is transmitted,
The first unit (31) is connected to the front portion of the rear frame (28), and the cutting blade (13) is attached to the front end of the first bottom plate (9);
When connecting the second unit (31) to the front part of the rear frame (28) and reattaching the cutting blade (13) to the front end of the second bottom plate (9A),
The harvesting device for a combine according to claim 2, wherein two transmission shafts (26) having different lengths in the axial direction are alternatively mounted between the transmission portion (27) and the cutting blade (13). The cutting unit (35) for weeding which cuts and separates the harvesting target grain cocoon and the non-reaching target grain cocoon in the side part in the horizontal direction of the 2nd unit (32). 3. Combine harvester according to 3.   The lower part of the weed cutting device (35) is connected to the second side plate (6A), and the upper part of the weed cutting device (35) is connected to the first side plate (6) by a support frame (41). The harvesting device for a combine according to claim 4, which is connected to the main body. A transmission shaft (26) for transmitting engine power to the weed cutting device (35) extends between the first side plate (6) and the support frame (41) in the front-rear direction. Item 6. A combine harvester according to item 5. The cutting blade (13) is slid from an opening (72A) formed in a side portion of the front frame (30) or the rear frame (28) to a position protruding outward from the first side plate (6). A cutting blade guard (72) that is configured to move and prevents cutting of the non-harvesting culm by the cutting blade (13) protruding to a position outside the first side plate (6). The combine harvester according to any one of claims 1 to 3.

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