JP2019030279A - Combine harvester - Google Patents

Abstract

To provide a combine harvester capable of cutting remaining culms on a field at a uniform cutting height without leaving the culms uncut.SOLUTION: A combine harvester includes a driving section 8, a reaping unit 3 which is arranged in front of the driving section 8 and reaps planted grain culms on the field with a main cutting device, and a grain culm transporting device 4 which transports all the culms of the reaped grain culms from the reaping unit 3 to a threshing device 5, and a remaining culm processing unit 20 which is arranged at rear side of the reaping unit 3 and cuts, with a sub-cutting device, remaining culms reaped by the reaping unit 3. A front end of the remaining culm processing unit 20 is arranged in front of the lower front end of the driving section 8 and at rear side of an entrance 4a of the grain culm transporting device 4.SELECTED DRAWING: Figure 1

Description

  The present invention provides a driving unit, a cutting unit provided in front of the driving unit, which cuts the planted cereal pods of the field by a main cutting device, and the whole culm of the chopped cereal after cutting from the reaping unit to the threshing device. The present invention relates to a combine provided with a grain culm transporting device that transports and a residue processing unit that is provided behind the cutting unit and cuts residue after cutting by the cutting unit using a secondary cutting device.

  For example, like a combine described in Patent Document 1, a cutting part ("cutting conveyance device" in the literature) and a residue processing unit ("sub cutting device" in the reference) provided behind the cutting part are It is known that the residue after cutting left on the field is cut by a residue processing unit. Thereby, even if the cutting height of the cutting part is changed according to the height of the tip part of the planted cereal rice cake, it is possible to cut the root of the residue, and the cutting of the residue part in the field Remaining can be reduced.

JP 2011-200188 A

  However, in the combine described in Patent Document 1, the residue processing unit is provided immediately after the cutting unit. For this reason, in the harvesting traveling of the combine, depending on the cutting height of the harvesting part, the residue after harvesting may come into contact with the lower part of the harvesting part and fall down. In this state, if the residue processing unit passes before the residue rises, the residue is not sufficiently cut from the root and remains left on the field, or the cutting height at which the residue is cut. There was a risk of unevenness.

  In view of the above circumstances, an object of the present invention is to provide a combine that can be cut at a uniform cutting height without leaving behind the residue in the field.

The present invention
The driving department,
A cutting part that is provided in front of the operation part, and that cuts the planted cereal of the field by a main cutting device;
A corn straw transporting device that transports the whole grain of the harvested corn straw after cutting to the threshing device from the reaping part;
A residue processing unit provided behind the cutting unit and cutting the residue after cutting by the cutting unit with a sub-cutting device;
Is provided,
The front end of the residue processing part is located in front of the lower front end of the operating part and behind the inlet of the grain feeder.

  According to this configuration, since the front end of the residue processing unit is located in front of the lower front end of the driving unit, the front end of the residue processing unit can be easily seen from the driving unit. For this reason, the cutting state of the residue in the residue processing part can be confirmed, and the cutting height of the cutting part can be adjusted. In addition, since the front end of the residue processing unit is located behind the entrance of the grain conveying device, the clearance between the entrance of the grain conveying device and the front end of the residue processing unit results in a lying state due to the passage of the cutting unit. Residue after cutting is likely to stand up due to this gap, and the residue processing unit can cut up standing residue at a uniform cutting height, reducing the possibility of leaving residue after cutting. . Thereby, the combine which can be cut | disconnected by the uniform cutting height without cutting off the residue of a farm field is implement | achieved.

In this configuration,
It is preferable that the sub-cutting device protrudes forward in a state of overlapping with the lower front end of the operating unit in plan view.

  If it is this structure, ensuring the visibility of the front end of a residue processing part, widening the gap mentioned above by separating as much as possible the front-rear distance between the entrance of the grain feeder and the front end of the residue treatment part be able to.

In this configuration,
The residue processing unit includes a plurality of vertical frames extending downward and a horizontal frame extending to the left and right so as to extend to front end portions of the plurality of vertical frames and supporting the auxiliary cutting device. Of the plurality of vertical frames, the vertical frame at the end portion on which the operation unit is located is opposite to the boarding / exiting step protruding from the operation unit laterally outward of the machine body and the grain feeder in the operation unit. It is preferable that it is passed between the wall portion located on the side.

  When the vertical frame at the end on the side where the operation unit is located is configured to protrude outward from the machine body, for example, during the mid-range cutting operation, the planted cereal before cutting on the right side of the machine body is the vertical frame. There is a risk of being overthrown. According to this structure, it is comprised so that the vertical frame of the edge part by which the driving | running | working part is located may be located inside an airframe rather than a boarding / alighting step. As a result, even in the case of middle cut cutting, before the cutting on the right side of the fuselage, compared to the configuration in which the vertical frame at the end on the side where the driving part is located is located on the outer side of the fuselage. The possibility that the planted cereal culm will fall on the vertical frame is reduced.

In this configuration,
An output rotating body is provided on the drive shaft of the cereal conveying device,
An input rotator for driving the auxiliary cutting device is provided in the residue processing unit,
An endless rotating body is wound around the output rotating body and the input rotating body,
It is preferable that a vibration control mechanism is provided between the output rotator and the input rotator so as to be engaged with the endless rotating body and suppress vibration of the endless rotating body.

  Depending on the separation distance between the output rotator and the input rotator and the rotational speed of the endless rotator, the endless rotator may vibrate between the output rotator and the input rotator. With this configuration, the vibration of the endless rotating body can be suppressed by the vibration control mechanism. As a result, it is possible to prevent the endless rotating body from being worn out or dropped off, and to prevent the rotation speed of the input rotating body from becoming uneven.

In this configuration,
The vibration damping mechanism has a pair of rotating bodies located on the outer peripheral side and the inner peripheral side of the endless rotating body,
The endless rotating body is preferably sandwiched between the pair of rotating bodies.

  With this configuration, the vibration of the endless rotating body can be suppressed from the outer peripheral side and the inner peripheral side by the pair of rotating bodies. Further, since the pair of rotating bodies rotate integrally with the endless rotating body, it is possible to prevent the possibility of sliding friction between the endless rotating body and the vibration control mechanism.

In this configuration,
The pair of rotating bodies are preferably provided on both the tension side and the loose side of the endless rotating body.

  In the configuration in which the rotating body is provided only on one of the tension side and the loose side in the endless rotating body, vibration of the endless rotating body is likely to occur on the side opposite to the side on which the rotating body is provided in the endless rotating body. With this configuration, vibration of the endless rotating body can be further prevented.

It is a body left side view of a combine. It is a top view of a combine. It is a body front view which shows the lower part of a driving | running part, and a residue process part. It is a body front view which shows a residue process part. It is the VV sectional view taken on the line in FIG. 4 which shows a residue process part and a feed member. It is a body front view showing a feed member and a transverse feed member. It is a body front view which shows the position of a boarding / alighting step and a right vertical frame. FIG. 3 is a left side view of the fuselage showing a left side portion of the residue processing unit and a vibration control mechanism. FIG. 4 is a left side cross-sectional view of the fuselage showing a left and right central part of the residue processing part, an interlocking mechanism, and a linkage mechanism. It is an aircraft right side view showing the right side of the residue processing unit and the boarding / alighting step. It is an aircraft left side view showing a vibration control mechanism. It is an airframe front sectional view showing a damping mechanism. It is an aircraft left side view showing a chain guide as a vibration damping mechanism. It is a fuselage right side view showing a feeder right side part and an interlocking mechanism. It is a body right side view showing an interlocking mechanism. It is a body front view showing an interlocking mechanism. It is machine body left side sectional drawing which shows the residue process part and interlocking | linkage mechanism at the time of a feeder raise. It is a top view which shows an operation tool and a window. It is an aircraft right side view showing an operation tool and a window. It is an aircraft right side view showing an operation part, an operation tool, and a shielding board. It is an aircraft left side view showing an auxiliary wheel. It is a body front view showing an auxiliary wheel.

[Basic structure of combine]
An embodiment of a combine according to the present invention will be described with reference to the drawings. In the present embodiment, “right” is the right direction of the airframe when viewed from the forward direction of the airframe, and “left” is the left direction of the airframe when viewed from the forward direction of the airframe.

  FIG. 1 to FIG. 3 show a normal combine that is an example of a combine. A machine body frame 1 in which a plurality of steel materials are connected to the combine is provided, and a pair of left and right crawler travel devices 2 having a crawler belt 2A are provided below the machine body frame 1. The crawler traveling device 2 includes a traveling drive shaft 2C that drives the drive sprocket 2B, and the traveling drive shaft 2C is supported by a traveling drive bearing 2D. A cutting part 3 is mounted in front of the body frame 1 so as to be movable up and down. The cutting unit 3 is provided with a reel 3A, a main cutting device 3B, and an auger 3C. A threshing device 5 and a grain collection unit 6 are provided at the rear of the machine frame 1 in a state where they are arranged side by side. The grain stored in the grain collection unit 6 is discharged by a grain discharge device 18 provided above the grain collection unit 6. An elevating cylinder 7 is provided across the conveying feeder 4 (grain culm conveying device) provided behind the mowing unit 3 and the body frame 1, and the mowing unit 3 together with the conveying feeder 4 by the expansion and contraction operation of the elevating cylinder 7. The cutting part 3 is configured to be able to change the cutting height according to the height of the tip part of the planted cereal culm.

  The planted grain culm in the field is scraped into the rear part of the harvesting unit 3 by the reel 3A and is cut by the main cutting device 3B having a clipper-like cutting blade. The harvested cereals after being cut by the main cutting device 3B are gathered together at the position where the inlet 4a of the transport feeder 4 is located by the auger 3C and sent out to the transport feeder 4. The conveyance feeder 4 conveys the whole grain of the harvested cereal meal from the harvesting unit 3 to the threshing apparatus 5, and the threshing apparatus 5 threshs the harvested grain meal. The grain collection | recovery part 6 is a grain tank, for example, and stores the grain threshed by the threshing apparatus 5. An operating part 8 with a cabin is provided on the front right part of the machine body frame 1. A side panel 9 is provided on the side of the driving unit 8 on the side where the transport feeder 4 is located, and the side panel 9 is provided with a combined speed change operation tool operated by the driver. An engine (not shown) and a transmission 62 are provided below the driving unit 8, and the engine power is transmitted to the travel drive shaft 2 </ b> C via the transmission 62.

  As shown in FIG. 3, a drive shaft 10 is provided at the rear upper end of the transport feeder 4 along the axis X for driving the transport feeder 4. The right end portion of the drive shaft 10 is positioned on the right side of the machine body with respect to the right side wall portion 4R of the transport feeder 4, and the left end portion of the drive shaft 10 is positioned on the left side of the machine body with respect to the left side wall portion 4L of the transport feeder 4. . A power transmission mechanism 11 that transmits power to the transport feeder 4 is provided on the right side of the right side wall 4R. The power transmission mechanism 11 includes a proximal sprocket 11A, a distal sprocket 11B, a feeder chain 11C, and a cover 11D. The proximal sprocket 11 </ b> A is provided at the right end of the drive shaft 10. The tip sprocket 11B is provided on the right side of the machine body from the front lower side of the base end sprocket 11A, that is, from the right side wall portion 4R at the front portion of the transport feeder 4. A feeder chain 11C is wound around the proximal sprocket 11A and the distal sprocket 11B. The power transmission mechanism 11 is covered on the upper side and the right side by a cover 11D, and an upper portion of the cover corresponding to an interlocking mechanism 50 described later opens.

[Getting in and out of driving section]
As shown in FIGS. 3, 7, and 10, an entrance (not shown) is provided on the right side of the vehicle body of the operation unit 8, and an entrance / exit step 12 is provided below the entrance. Of the getting-on / off step 12, the part below the center of the upper and lower sides is configured to be foldable. That is, the boarding / alighting step 12 includes an upper step 12A that is supported and fixed to the right side of the airframe of the operating unit 8, and a lower step 12B that is swingably connected to the lower end of the upper step 12A. Also, a pair of axial core portions 12C, 12C are formed along the front-rear direction at both ends in the front-rear direction at the lower end portion of the upper step 12A, and a pair of axial core portions are formed at both ends in the front-rear direction at the swing base end portion of the lower step 12B. A pair of long holes 12Ca and 12Ca engaging with 12C and 12C are formed. That is, the lower step 12B is configured to be slidable along the longitudinal direction of the long hole 12Ca, and the shaft core portion 12C can swing up and down within a range of about 180 degrees around the shaft center and laterally outside the machine body. It is configured.

  A pair of locking portions 12D and 12D are formed at both ends in the front-rear direction at the lower end of the upper step 12A. A pair of first locked portions 12Da, 12Da that are locked to the locking portion 12D, and a pair of second locked portions 12Db, 12Db at both ends in the front-rear direction of the swing base end portion of the lower step 12B, Is formed. By lowering the lower step 12B with respect to the upper step 12A and locking the first locked portion 12Da with the locking portion 12D, the lower step 12B becomes in use. By folding the lower step 12B with respect to the upper step 12A and locking the second locked portion 12Db to the locking portion 12D, the lower step 12B is in the stored state. In the present embodiment, the locking portion 12D and each of the first locked portion 12Da and the second locked portion 12Db are provided at both ends in the front-rear direction in the getting-on / off step 12, but these are getting on / off. The structure provided in either before and behind in step 12 may be sufficient.

  With the above-described configuration of the boarding / alighting step 12, for example, when the combine performs cutting and traveling over the eaves, it is possible to prevent the boarding / alighting step 12 from coming into contact with the eaves by placing the boarding / alighting step 12 in the retracted state.

[Residual processing section]
In order to reduce the threshing load in the threshing device 5, the cutting height of the cutting unit 3 is set high, and only the tip side of the planted culm may be cut. At this time, it is necessary to cut the residue after cutting in order to prevent the residue after cutting from being left on the field in a state where the height is high. As shown in FIGS. 1 to 4, a residue processing unit 20 is provided behind the cutting unit 3. The residue processing unit 20 has a horizontally long auxiliary cutting device 21 extending in the left-right direction of the machine body, and the front portion of the auxiliary cutting device 21 is formed in a clipper shape that repeats a mountain shape and a valley shape in the front-rear direction along the left-right direction. It is a cutting edge. The rear portion of the sub-cutting device 21 is placed and supported on an angle member 22B extending in the left-right direction, and the rear portion of the angle member 22B is supported on the horizontal frame 22 across the left and right sides of the angle member 22B. The auxiliary cutting device 21 is driven by an eccentric drive unit 30 described later, and reciprocates in the left-right direction.

  As shown in FIG. 2, the sub cutting device 21 is configured such that the left and right width of the sub cutting device 21 is smaller than the left and right width of the main cutting device 3B. The left side end of the machine body of the sub-cutting device 21 is located inside the body of the left side of the machine body of the main cutting device 3B. Further, the right side end of the machine body of the sub-cutting device 21 is located on the inner side of the machine body than the right side end of the machine body of the main cutting device 3B. Thereby, even if it is a case where the planted culm before being cut and lying is in the left and right sides of the machine body, the possibility that the planted culm before cutting is cut by the auxiliary cutting device 21 is reduced.

  The difference in the left-right direction between the left side edge of the machine body of the sub-cutting device 21 and the left side edge of the machine body of the main cutting device 3B is the width of one line of the harvested cereal but this difference can be appropriately changed. When cutting on one line of the combine, the left end of the residue after cutting by the cutting unit 3 may be left behind, but this residue remains at the right end when cutting on the left adjacent line. As a residue, it can be cut at the left end of the machine body of the auxiliary cutting device 21. For this reason, the difference in the horizontal direction between the right side end of the machine body of the auxiliary cutting device 21 and the right side edge of the machine body of the main cutting device 3B is the left side edge of the machine body of the auxiliary cutting device 21 and the left side of the machine body of the main cutting device 3B. The sub-cutting device 21 can be configured to be smaller than the difference in the left-right direction at the end.

  As shown in FIGS. 1 and 2, the front end of the residue processing unit 20 is located on the front side of the lower front end 8F of the operation unit 8 and on the rear side of the inlet 4a of the conveyance feeder 4. The auxiliary cutting device 21 protrudes forward in a state overlapping with the lower front end 8F of the operating unit 8 in plan view. That is, the front end of the residue processing unit 20 is located between the front-rear position L1 of the inlet 4a and the front-rear position L2 of the lower front end 8F. For this reason, the auxiliary cutting device 21 is positioned rearward in a state of being separated from the cutting portion 3, and a gap S in the front-rear direction and the vertical direction is formed between the inlet 4 a and the front end of the auxiliary cutting device 21. That is, the sub-cutting device 21 is formed with a wider gap S in the front-rear direction and the up-down direction than in the case where the sub-cutting device 21 is positioned rearward in a state close to the cutting unit 3. For this reason, after the residue after cutting becomes a fallen state due to the passage of the cutting part 3, the residue stands in the gap S before the sub-cutting device 21 passes the residue. As a result, the subsidence that has fallen due to the passage of the cutting unit 3 may be left behind by the sub-cutting device 21, or before the residue rises, and the cutting height of the residue may be uneven. The risk of occurrence is reduced.

  As shown in FIG. 4, a plurality of receiving blades 24 are provided in front of the horizontal frame 22 at equal intervals along the left-right direction in a state of extending in front of the machine body. A gap corresponding to the thickness in the vertical direction of the auxiliary cutting device 21 is formed in each receiving blade 24 in the left-right direction. The reciprocating motion of the auxiliary cutting device 21 allows the clearance of the receiving blade 24 to be reduced. The cutting edge passes in the left-right direction. When cutting the machine, the residue left behind by the cutting unit 3 comes into contact with the residue processing unit 20, and the base of the residue is transferred to the auxiliary cutting device 21 and the receiving blade 24 by the reciprocating motion of the auxiliary cutting device 21. It is sandwiched and cut.

  As shown in FIGS. 3, 4, 8, 9, and 10, a plurality of vertical frames 23 are provided so as to support the upper and rear portions of the horizontal frame 22 from above. The vertical frame 23 includes a right vertical frame 23A located on the right side of the machine body, a left vertical frame 23C located on the left side of the machine body, and an intermediate vertical frame 23B located on the middle part of the horizontal frame 22. Bearing parts 13 </ b> A, 13 </ b> B, and 13 </ b> C having the same axis Z are provided at the front part of the body frame 1. The upper ends of the vertical frames 23A, 23B, and 23C are swingably supported by the bearing portions 13A, 13B, and 13C, and the vertical frames 23A, 23B, and 23C are lowered downward from the bearing portions 13A, 13B, and 13C. Tilt. A pair of plate-like stays 23Ba and 23Ba rising from the left and right side surfaces of the intermediate vertical frame 23B are fixed to the left and right side surfaces of the intermediate vertical frame 23B by welding. The interlocking mechanism 50 is connected to the pair of stays 23Ba and 23Ba. Therefore, the residue processing unit 20 is configured so that the intermediate vertical frame 23B is connected to the transport feeder 4 via the interlocking mechanism 50 and can swing up and down in conjunction with the up and down movement of the transport feeder 4. Has been. The interlocking mechanism 50 will be described later.

  As shown in FIGS. 3 and 7, the right vertical frame 23 </ b> A is provided on the left and right inner sides of the aircraft with respect to the boarding / alighting step 12 provided below the loading / unloading opening on the right side of the vehicle body of the driving unit 8. That is, the right vertical frame 23A is passed between the boarding / alighting step 12 that protrudes laterally outward from the driving unit 8 and the wall 8R that is located on the opposite side of the driving unit 8 from the conveyance feeder 4. . For this reason, the folding operation of the lower step 12B in the getting-on / off step 12 is smoothly performed without being obstructed by the right vertical frame 23A. Compared with the configuration in which the right vertical frame 23A is provided on the outer side of the aircraft from the boarding / exiting step 12, the right vertical frame 23A is in contact with the reed, and the planting before cutting is located on the right side of the aircraft in the middle cutting operation. The risk that the cereals will be brought down by the right vertical frame 23A is reduced.

  The right vertical frame 23A is arranged close to the side where the wall 8R is located in the space between the getting-on / off step 12 and the wall 8R. Further, the lower portion of the right vertical frame 23A is bent so as to bend inwardly on the left and right sides of the aircraft. Thereby, the possibility that the right vertical frame 23A may come into contact with the heel is further reduced.

  As shown in FIG. 4, bolt insertion holes 23o, 23p, and 23q are formed in the lower end of the right vertical frame 23A, the lower end of the intermediate vertical frame 23B, and the lower end of the left vertical frame 23C, respectively. ing. Each of the bolt insertion holes 23o, 23p, and 23q has a plurality of insertion holes, and the number of insertion holes can be changed as appropriate. Screw holes 22o, 22p, 22q corresponding to the bolt insertion holes 23o, 23p, 23q are formed in the horizontal frame 22, and the bolt insertion holes 23o, 23p, 23q are engaged with the screw holes 22o, 22p, 22q. In the state, each is bolted. Thereby, the horizontal frame 22 is supported by the vertical frame 23. The horizontal frame 22 is configured to be removable from the vertical frame 23 by removing bolts fastened to the bolt insertion holes 23o, 23p, 23q and the screw holes 22o, 22p, 22q. From this, for example, the horizontal frame 22 having different left and right widths can be attached to the vertical frame 23 in accordance with the number of cut lines of the cutting unit 3.

  As shown in FIGS. 3 to 6, a feed member 25 and a transverse feed member 26 are integrally provided with the sub-cutting device 21 in the residue processing unit 20 in a state of interlocking with the sub-cutting device 21. Yes. The feed member 25 and the transverse feed member 26 are bolted to the rear part of the auxiliary cutting device 21. The lower end of the feed member 25 is fixed by welding to the transverse feed member 26, and the transverse feed member 26 is provided on both the left and right sides of the feed member 25. The feed member 25 is a plate member that is provided in front of the intermediate vertical frame 23B and is formed in an L-shaped cross section so as to be tapered toward the front side. Further, the lateral width of the feeding member 25 is formed wider than the lateral width of the intermediate vertical frame 23B. As a result, the sawdust in front of the intermediate vertical frame 23B (residue cut by the sub-cutting device 21) is widely received by the feed member 25, and there is no possibility that the waste is caught on the intermediate vertical frame 23B and accumulated. . The feed member 25 and the transverse feed member 26 may be formed by pressing a sheet metal or may be formed by resin molding. Alternatively, the feed member 25 may be provided at the center of the left and right sides of one transverse feed member 26, or the two transverse feed members 26 and 26 may be provided on the left and right sides of the feed member 25, respectively. May be.

  Since the feed member 25 reciprocates in the left-right direction in conjunction with the sub-cutting device 21, even if the sawdust is caught on the front end of the feed member 25, the front end of the feed member 25 is vibrated by the left and right vibrations. And are distributed to the left and right sides of the feed member 25. That is, the sawdust is guided by the feed member 25 to a position away from the intermediate vertical frame 23B.

  Further, in the cutting and traveling state, the feeding member 25 is tilted forward as viewed from the side, and a force that presses downward against the sawdust that contacts the feeding member 25 is generated with the cutting and traveling of the airframe. As a result, the possibility that the sawdust is caught by the feed member 25 and accumulated is reduced, and the sawdust in contact with the feed member 25 is smoothly distributed to the left and right.

  The transverse feed member 26 is bolted to the rear portion of the sub-cutting device 21 in a state where the transverse feed member 26 is inclined upward. In the transverse feed member 26, the transverse feed member 26 is provided so that a wave shape that continuously undulates in the vertical direction is formed over the lateral direction of the machine body, and the wave shape is symmetrical with respect to the feed member 25. It has been. In each corrugated shape of the lateral feed member 26, an inclined portion 21a that is inclined so as to be farther from the feed member 25 from the lower end to the upper end, and a vertical portion 21b that is suspended substantially vertically from the upper end to the lower end are formed. ing.

  Since the lateral feed member 26 reciprocates in the left-right direction together with the feed member 25, the sawdust receives a force acting in a direction away from the feed member 25 from the vertical portion 21b and passes from the feed member 25 while passing through the inclined portion 21a. It is transported away. As a result, the soot distributed to the left and right by the feed member 25 is transported in the left-right direction as it is and discarded to the rear, so that the possibility of the soot depositing on the feed member 25 is reduced.

  As shown in FIG. 9, a support member 14 is provided across the body frame 1 and the travel drive bearing 2D. The lower part of the support member 14 is inclined so as to be lowered forward, and the spring support mechanism 15 is attached and fixed to the support member 14 on the support member 14 in a state where the spring support mechanism 15 is inclined so as to fall forward. The lower part of the spring support mechanism 15 is bolted to the support member 14, a spring spring 15 </ b> A is provided at an upper and lower intermediate portion of the spring support mechanism 15, and a placement surface 15 </ b> B is provided at the upper part of the spring support mechanism 15. A reinforcing plate 23Bb is provided at a position facing the mounting surface 15B at the upper and lower intermediate positions of the intermediate vertical frame 23B, and the mounting bolt 23Bc projects rearward and downward at a position where the reinforcing plate 23Bb is provided. It is fixed. The intermediate vertical frame 23B is mounted on the mounting surface 15B of the spring support mechanism 15 in a state where the mounting surface 15B and the mounting bolt 23Bc are in contact with each other. Thereby, the residue processing unit 20 receives an upward biasing force from the spring support mechanism 15 so that the weight of the residue processing unit 20 and the repulsive force of the spring spring 15A are balanced.

  A horizontal frame 27 extending in the left-right direction of the fuselage is provided between the upper and lower intermediate points of the right vertical frame 23A and the upper and lower intermediate points of the intermediate vertical frame 23B. The horizontal width of the horizontal frame 27 in the horizontal direction of the machine body is configured to be wider than the horizontal width of the transport feeder 4. A contact frame 4B is provided at the lower part of the transport feeder 4, and when the transport feeder 4 is lowered, the contact frame 4B and the horizontal frame 27 are in contact. The horizontal frame 27 receives a downward force from the transport feeder 4, and the intermediate vertical frame 23 </ b> B presses the spring support mechanism 15. The spring support mechanism 15 receives a pressing force from the intermediate vertical frame 23B, and the spring spring 15A contracts. Thereby, the residue processing part 20 descends, and the possibility that the sub-cutting device 21 and the receiving blade 24 come into contact with the transport feeder 4 is prevented. When the transport feeder 4 rises from the state in which the transport feeder 4 is lowered, the residue processing unit 20 rises to a position where the weight of the residue processing unit 20 and the repulsive force of the spring spring 15A balance.

[Eccentric drive unit]
As shown in FIG. 3, FIG. 4, and FIG. 8, the machine body left end of the sub-cutting device 21 is connected to the eccentric drive unit 30 via the connecting member 28. The left vertical frame 23C is provided with a mounting stay 23Ca that protrudes from the left vertical frame 23C to the upper left of the machine body, and the bearing block 29 is bolted to the mounting stay 23Ca. The eccentric drive unit 30 is supported by the left vertical frame 23 </ b> C and the bearing block 29.

  The eccentric drive unit 30 includes an input sprocket 31 (input rotator), an eccentric drive shaft 32, a drive rod shaft 33, and a swing drive arm 34. The axis X is an axis of the drive shaft 10 that drives the transport feeder 4. The drive shaft 10 is provided with an output sprocket 35 (output rotator), and the output sprocket 35 transmits power to the auxiliary cutting device 21. An endless chain 36 (endless rotating body) is wound around the output sprocket 35 and the input sprocket 31, and a damping mechanism 40 having a damping sprocket 41 is locked to the endless chain 36. The vibration control mechanism 40 will be described later.

  A tension arm 37 that swings around the axis X of the output sprocket 35 is provided, and a tension ring 38 is provided at the tip of the swing of the tension arm 37. A spring member 39 is provided across the swinging tip of the tension arm 37 and the stay 5A provided in the threshing device 5, and the tension ring 38 is urged by the spring member 39 so as to press the endless chain 36 from the outer peripheral side. Has been. Since the output sprocket 35 rotates counterclockwise in the left side view, the endless chain 36 rotates between the output sprocket 35 and the input sprocket 31 counterclockwise in the left side view by driving the output sprocket 35. For this reason, in the endless chain 36, the side on which the tension ring 38 acts becomes the loose side, and the side opposite to the side on which the tension ring 38 acts becomes the tension side.

  The power of the drive shaft 10 is transmitted from the output sprocket 35 to the input sprocket 31 via the endless chain 36, and a rotation mechanism (not shown) provided on the eccentric drive shaft 32 rotates. The outer periphery of the eccentric drive shaft 32 serves as a bearing for a rotation mechanism of the eccentric drive shaft 32 via a ball bearing (not shown). For this reason, the outer periphery of the eccentric drive shaft 32 does not rotate, and the rotation of the rotation mechanism of the eccentric drive shaft 32 causes the outer periphery of the eccentric drive shaft 32 to swing back and forth around the shaft core Y.

  Of the drive rod shaft 33, a drive fork portion 33 </ b> A is provided at an end portion on the side where the eccentric drive shaft 32 is located, and a portion where the drive fork portion 33 </ b> A is provided is a base end portion of the drive rod shaft 33. The drive fork portion 33 </ b> A is fitted on both upper and lower ends of the outer periphery of the eccentric drive shaft 32. As the eccentric drive shaft 32 reciprocates, the drive fork portion 33A reciprocates around the shaft core Y, and the drive rod shaft 33 moves at an angle corresponding to the reciprocation of the drive fork portion 33A. The axis Y is rotated around the axis.

  The vicinity of the distal end portion of the drive rod shaft 33 is rotatably supported by the bearing block 29, and the distal end portion of the drive rod shaft 33 projects downward from the bearing block 29. A swing drive arm 34 is attached and fixed to the tip of the drive rod shaft 33. The swing drive arm 34 reciprocally swings around the axis Y at an angle corresponding to the reciprocal swing of the drive fork portion 33A, and the swing tip of the swing drive arm 34 is connected to the linkage member 28. The As the swing drive arm 34 swings, the sub-cutting device 21 reciprocates in the left-right direction.

  By providing the eccentric drive unit 30 at the left end of the residue processing unit 20, the position of the center of gravity of the residue processing unit 20 is shifted to the left from the center in the left-right direction of the residue processing unit 20. For this reason, the residue processing unit 20 is configured such that the intermediate vertical frame 23B is biased to the left side of the machine body from the center in the left-right direction. As a result, when the intermediate vertical frame 23B is pulled up by the interlocking mechanism 50 described later, the position of the intermediate vertical frame 23B becomes the center of gravity position in the left-right direction of the residual processing unit 20, so that the residual processing unit 20 The center of gravity when swinging upward is stabilized.

[Endless chain damping mechanism]
As shown in FIGS. 8 and 11, in the rotation range of the endless chain 36, a vibration damping mechanism 40 that suppresses vibration of the endless chain 36 is provided at the center of the rotation range on the side where the input sprocket 31 is located. ing. The vibration damping mechanism 40 is provided with a pair of rotating bodies positioned on the outer peripheral side and the inner peripheral side of the endless chain 36, that is, a vibration suppression sprocket 41. In this embodiment, a pair of damping sprockets 41A and 41B located on the outer peripheral side and the inner peripheral side are provided on the tension side of the endless chain 36 as a pair of rotating bodies, and on the loose side of the endless chain 36, the outer peripheral side A pair of damping sprockets 41C and 41D located on the inner peripheral side is provided as a pair of rotating bodies. Thus, the pair of damping sprockets 41 </ b> A, 41 </ b> B, 41 </ b> C, 41 </ b> D is provided on both the tight side and the loose side of the endless chain 36. Each damping sprocket 41A, 41B, 41C, 41D rotates integrally with the endless chain 36 so that the endless chain 36 does not cause sliding friction with respect to each damping sprocket 41A, 41B, 41C, 41D. It is configured. In addition, although each damping sprocket 41A, 41B, 41C, 41D is comprised so that tension | tensile_strength may be slightly applied with respect to the endless chain 36, each damping sprocket 41A, 41B, 41C, 41D is The endless chain 36 may be configured not to be tensioned.

  On the tension side of the endless chain 36, the damping sprocket 41A is locked to the outer peripheral side of the endless chain 36 to receive the deflection of the endless chain 36, and the damping sprocket 41B is locked to the inner peripheral side of the endless chain 36. The endless chain 36 is then shaken. Further, on the loose side of the endless chain 36, the damping sprocket 41C is locked to the outer peripheral side of the endless chain 36 to receive the vibration of the endless chain 36, and the damping sprocket 41D is engaged with the inner peripheral side of the endless chain 36. Stop and catch the runout of the endless chain 36. In this manner, the endless chain 36 is sandwiched between the pair of vibration suppression sprockets 41A and 41B and the pair of vibration suppression sprockets 41C and 41D, so that the vibration of the endless chain 36 is suppressed. As a result, it is possible to prevent the endless chain 36 from being stretched and dropped off, and to prevent the rotational speed of the input sprocket 31 and the eccentric drive unit 30 from becoming uneven.

  As shown in FIGS. 11 and 12, the vibration damping mechanism 40 is provided with a base part 42A supported and fixed to the front left part of the body frame 1 and a saddle frame 42B rising upward from the base part 42A. The eaves frame 42B is made of, for example, channel steel. A flat mounting member 43 is welded and fixed to the outer side of the body of the saddle frame 42B, and the damping sprockets 41A, 41B, 41C and 41D are attached to the front and rear sides of the saddle frame 42B and the mounting member 43, respectively. The bearing portions 44A, 44B, 44C, 44D are fixed by welding. The damping sprockets 41A, 41B, 41C, 41D are rotatably mounted on the respective bearing portions 44A, 44B, 44C, 44D in a state where they are cantilevered.

  The damping mechanism 40 includes an inner cover member 45 that covers the damping sprockets 41A, 41B, 41C, and 41D from the inner side of the fuselage and an outer cover that covers the damping sprockets 41A, 41B, 41C, and 41D from the outer side of the fuselage. And a cover member 46. The inner cover member 45 is bolted to the mounting member 43 in a state of being positioned between the mounting member 43 and the vibration damping sprockets 41A, 41B, 41C, 41D.

  A recess 45 a for avoiding interference between the inner cover member 45 and the input sprocket 31 is formed in the lower portion of the inner cover member 45. The inner cover member 45 is inclined rearwardly up so as to be substantially along the winding longitudinal direction of the endless chain 36 in a side view of the machine body. The front upper part and the rear lower part of the inner cover member 45 are bent so as to be bent laterally outward by, for example, sheet metal pressing, and the bent folds at the front upper part and the rear lower part of the inner cover member 45 are endless chain 36. The inner cover member 45 is configured so as to be substantially along the winding longitudinal direction. Bending extension that extends to the front upper part and rear lower part of the inner cover member 45 laterally outward by bending so that the front upper part and the rear lower part of the inner cover member 45 are bent outward. Portions 45b and 45c are formed. Each bending extension part 45b, 45c inclines back up so that it may follow the winding longitudinal direction of the endless chain 36 substantially.

  The front lower portion of the outer cover member 46 extends forward and lower than the front lower portion of the inner cover member 45, and is configured to cover the input sprocket 31 and the eccentric drive shaft 32 from the left side of the machine body. In addition, the rear upper part of the outer cover member 46 extends rearward and upper than the rear upper part of the inner cover member 45, and is configured to cover the front lower half of the endless chain 36 in the longitudinal direction of winding. Yes.

  Bending and extending portions 46 a and 46 b are formed on the outer cover member 46. Further, three bolt insertion holes are formed in the bent extension portion 46a, and two bolt insertion holes are formed in the bent extension portion 46b. The bolt insertion holes of the bent extension portion 46a are fastened with bolts in a state of engaging with the three bolt fastening holes formed in the bent extension portion 45b. Further, the bolt insertion holes of the bent extension portion 46b are respectively fastened with bolts in a state of engaging with two bolt fastening holes formed in the bent extension portion 45c. Thereby, the outer cover member 46 is bolted to the inner cover member 45. In this embodiment, three bolt insertion holes are formed in the bent extension portion 46a, and two bolt insertion holes are formed in the bent extension portion 46b. However, the number of bolt insertion holes can be changed as appropriate. Is possible.

  The vibration damping mechanism 40 described above is configured such that a pair of vibration damping sprockets 41A, 41B, 41C, and 41D are provided on the tension side and the loose side of the endless chain 36, respectively. As described above, instead of the pair of damping sprockets 41A, 41B, 41C, and 41D, the drive chain guide 110 may be provided on the outer peripheral side of the endless chain 36 on the tight side. With this configuration, vibration on the tight side of the endless chain 36 is received by the drive chain guide 110, and vibration of the endless chain 36 is suppressed. The drive chain guide 110 may be provided on the loose side of the endless chain 36 or may be provided on the inner peripheral side of the endless chain 36.

[Interlocking mechanism]
As shown in FIGS. 3, 9, 14 to 17, an interlocking mechanism 50 is provided between the operation unit 8 and the transport feeder 4. The interlocking mechanism 50 is located directly above the intermediate vertical frame 23B, and is provided in a gap between the feeder chain 11C and the right side wall 4R. Further, in the cover 11D that covers the power transmission mechanism 11, an upper portion of a portion corresponding to the interlock mechanism 50 is opened, and an upper portion of the interlock mechanism 50 extends upward from the cover. For this reason, the upper part of the interlocking mechanism 50 is easily visible from the driving unit 8. An interlocking frame 51 is provided in the interlocking mechanism 50, and the interlocking frame 51 is erected upward in a state of being swingably connected between a pair of left and right stays 23Ba, 23Ba fixed to the intermediate vertical frame 23B.

  The interlocking frame 51 is made of, for example, channel steel and is formed in a U shape that is square in a cross-sectional view. The square U-shaped bottom portion is the lateral side portion 51 a, and the lateral side portion 51 a is located on the side where the operation unit 8 is located. Locations other than the square U-shaped bottom portion are the front side portion 51b and the rear side portion 51c, the front side portion 51b is located on the front side of the machine body, and the rear side part 51c is located on the rear side of the machine body. An elongated guide hole 51 d is formed in the lateral side portion 51 a of the interlocking frame 51 along the longitudinal direction of the interlocking frame 51.

  In the transport feeder 4, the locking portion 52 is provided in a state where the locking portion 52 is connected and fixed to the right side wall portion 4 </ b> R on the side where the operating portion 8 is located, and the locking portion 52 passes through the guide hole 51 d. As the conveying feeder 4 moves up and down, the locking portion 52 also moves up and down. Therefore, the interlocking frame 51 swings around the pair of left and right stays 23Ba and 23Ba as a fulcrum, and the locking portion 52 includes the guide hole 51d. Slide along the longitudinal direction.

  The locking part 52 is constituted by, for example, a bolt, and the diameter at the distal end of the locking part 52 is larger than the diameter at the base end part of the locking part 52 connected to the right side wall part 4R of the transport feeder 4. It is comprised so that it may become. Further, the diameter of the distal end portion of the locking portion 52 is formed larger than the width of the guide hole 51d in the short direction, and the locking portion 52 is configured so that the locking portion 52 does not come out of the guide hole 51d. Yes. In the present embodiment, the enlarged diameter portion 51e is formed at the lower end in the longitudinal direction of the guide hole 51d, and when the interlocking frame 51 is assembled, the distal end portion of the locking portion 52 is inserted from the enlarged diameter portion 51e into the guide hole 51d. .

  A pair of front and rear restrictor insertion holes 51f and 51f are formed in the upper portions of the front side portion 51b and the rear side portion 51c, and the restrictor 53 is detachably provided across the pair of front and rear restrictor insertion holes 51f and 51f. It has been. As shown in FIGS. 9 and 14, the restricting tool 53 is provided so as to overlap with the upper portion in the longitudinal direction of the guide hole 51 d in a side view.

  When the transport feeder 4 moves up, the locking portion 52 slides upward along the longitudinal direction of the guide hole 51d and comes into contact with the restricting tool 53. When the transport feeder 4 is further raised, the locking portion 52 is locked to the restricting tool 53, so that the transport feeder 4 and the interlocking frame 51 are integrally lifted. In this state, when the intermediate vertical frame 23B is pulled by the interlocking frame 51, the residue processing unit 20 swings upward. As described above, the residue processing unit 20 is configured to be interlocked with the transport feeder 4 via the interlocking mechanism 50.

  The pair of front and rear restrictor insertion holes 51f and 51f can be provided at a plurality of locations along the longitudinal direction of the interlocking frame 51. In the present embodiment, a pair of front and rear restrictor insertion holes 51 f and 51 f are provided at four locations on the upper portion of the interlocking frame 51. Since the restricting tool 53 can be inserted into any restricting tool insertion hole 51f, the locking position of the restricting tool 53 with respect to the locking portion 52 can be changed. Further, the restricting tool 53 can be detached from the interlocking frame 51, and it is possible to prevent the residue processing part 20 from interlocking with the transport feeder 4 at all without the engaging part 52 being engaged with the restricting tool 53. It is.

  As shown in FIG. 14, a tension adjusting mechanism 60 and an auxiliary sprocket 61 that are engaged with the feeder chain 11 </ b> C of the power transmission mechanism 11 are provided behind the interlocking frame 51. A locked portion 54 that can be locked to the locking portion 52 is provided in front of the interlocking frame 51. The configuration in which the locked portion 54 is provided in front of the interlocking frame 51 prevents the possibility of interference with the tension adjusting mechanism 60 and the auxiliary sprocket 61 provided in the rear of the interlocking mechanism 50, and the locked portion 54. This state is easy to check from the driving unit 8.

  The locked portion 54 is configured to be able to be locked with the locking portion 52 at a location below the location where the restricting tool 53 is located in the interlocking frame 51. The locked portion 54 includes a fulcrum portion 54A, a swing plate portion 54B that swings around a pin hole 54Aa formed in the fulcrum portion 54A, and a side view L that swings integrally with the swing plate portion 54B. And a character-like switching tool 54C.

  The fulcrum part 54A is formed in a flat plate shape, and a pin hole 54Aa is formed at the center of the fulcrum part 54A. The fulcrum portion 54A is welded and fixed to the front side portion 51b in a state in which the fulcrum portion 54A projects forward from the front side portion 51b of the interlocking frame 51 and the axial center of the pin hole 54Aa is along the horizontal direction of the machine body. The swing plate portion 54B is formed in a flat plate shape, and a pin hole 54Ba that engages with the pin hole 54Aa of the fulcrum portion 54A is formed at the swing base end portion of the swing plate portion 54B. When the two pin holes 54Aa and 54Ba are engaged with each other and the pin 54D is inserted and prevented from coming off, the swing plate portion 54B swings with respect to the fulcrum portion 54A.

  A pin hole 54Bb is formed in the swing tip of the swing plate portion 54B on the upper side of the fuselage, and a linkage mechanism 70 described later is connected to the swing plate portion 54B at a position where the pin hole 54Bb is located. They are connected by being pinned.

  Of the swinging tip portion of the swinging plate portion 54B, a bent portion 54Bc that is bent perpendicularly from a flat plate-like portion of the swinging plate portion 54B is formed at the swinging tip portion on the lower side of the machine body. It is fixed by welding to the bent portion 54Bc and the flat plate-like portion of the swinging plate portion 54B. Thereby, the switching tool 54C is firmly supported by the swing plate portion 54B, and the switch tool 54C can swing integrally with the swing plate portion 54B.

  A pair of long holes 51g and 51g are formed at positions below the restricting tool insertion hole 51f in the front side portion 51b and the rear side portion 51c, and the tip side swings clockwise in FIG. 14 from the bent portion of the switching tool 54C. Is inserted through the pair of long holes 51g and 51g. When the switching tool 54C is inserted into the pair of long holes 51g, 51g, the distal end side of the bending part of the switching tool 54C is hooked on the guide hole 51d in a state of being positioned below the restricting tool 53, and the locking portion 52 is engaged. Lock to. Thereby, the to-be-latched part 54 will be in a latching state, and the interlocking mechanism 50 will be in a interlocking state.

  When the switching tool 54C swings counterclockwise in FIG. 14, the switching tool 54C is disengaged from the guide hole 51d and is positioned in front of the interlocking frame 51, and the switching tool 54C is not locked to the locking portion 52. Thereby, the to-be-latched part 54 will be in a non-locking state, and the interlocking mechanism 50 will be in a cancellation | release state.

  In the present embodiment, the rising height of the transport feeder 4 at which the locked portion 54 is locked to the locking portion 52 is a preset height. When the interlocking mechanism 50 is in the interlocking state, as shown in FIG. 17, when the transport feeder 4 rises above the set height described above, the residue processing unit 20 swings upward in conjunction with the transport feeder 4. . That is, when the transport feeder 4 is raised to the rising height shown in FIG. 17, when the interlocking mechanism 50 is in the interlocking state, the residue processing unit 20 swings upward than when the interlocking mechanism 50 is in the release state. Moved. As a result, for example, when the combine is going over the ridge, the possibility that the auxiliary cutting device 21 and the receiving blade 24 come into contact with the ridge is reduced.

  As described above, when the transport feeder 4 rises above the set height described above, an interlocking state in which the residue processing unit 20 is moved up and down in conjunction with the transport feeder 4 and the transport feeder 4 rises above the set height described above. Even so, the interlocking mechanism 50 is configured so that it can be switched to a release state in which the residue processing unit 20 is not interlocked with the transport feeder 4.

  As shown in FIGS. 9 and 14 to 17, the interlocking mechanism 50 is provided with an urging mechanism 54 </ b> E that urges the switching tool 54 </ b> C in a direction in which the interlocking mechanism 50 is in the interlocking state. The urging mechanism 54E is, for example, a torsion spring. A spring receiving portion 55 that receives an urging force from the urging mechanism 54E is welded and fixed to the front side portion 51b on the front side portion 51b of the interlocking frame 51 so as to protrude forward from the front side portion 51b.

  The urging mechanism 54E includes a first action part 54Ea, a second action part 54Eb, and a winding part 54Ec. The first action portion 54 </ b> Ea is locked to the spring receiving portion 55, and a biasing force acts on the interlocking frame 51. The second action portion 54Eb is locked to the swinging tip portion on the upper side of the machine body in the swing plate portion 54B, and an urging force acts on the swing plate portion 54B. The winding portion 54Ec is wound around the pin 54D. The swing plate portion 54B receives a biasing force from the second action portion 54Eb so as to swing clockwise in FIG. 14, and the distal end side is inserted into the pair of long holes 51g and 51g from the bent portion of the switching tool 54C. The switching tool 54C is biased so as to be hooked in the guide hole 51d.

[Operation tool]
Hereinafter, the operation tool 80 for switching the interlocking mechanism 50 between the interlocking state and the release state will be described. As shown in FIGS. 18 and 19, the operation tool 80 is provided on the wall portion 8 </ b> L on the side where the conveyance feeder 4 is located, outside the operation portion 8. Further, the operation tool 80 is provided at a height corresponding to an upper portion of the side panel 9 provided on the left side portion of the operation unit 8.

  In the present embodiment, the operating unit 8 is provided with a cabin, the window portion 16 is provided with an openable / closable window 16, and the operation tool 80 is provided below the central portion in the front-rear direction of the window 16. The window 16 is configured such that the support shaft 17 supported by the front cabin frame 8A can swing around the axis. Thus, the window 16 is configured to be opened and closed by swinging the support shaft 17 that is the front fulcrum around the axis. The operating tool 80 is configured so that the driver can operate the operating tool 80 by reaching his left side of the side panel 9 with the window 16 opened. In addition, since the operation tool 80 is provided at the center in the front-rear direction of the window 16, compared with the configuration in which the operation tool 80 is provided at the front side of the window 16, the wall portion 7 </ b> L is opened with the window 16 opened. A space between the window 16 and the window 16 is increased, and the operation tool 80 can be easily operated.

  In order to avoid interference between the window 16 and the operation tool 80, the operation tool 80 is configured to be able to swing back and forth around the axis of the axis P along the vertical direction of the machine body. The operation tool 80 includes a lateral support portion 81, a support shaft portion 82, an operation lever portion 83, and a lever portion 84. The lateral support portion 81 is configured, for example, by pressing a flat plate-like member, and includes a flat portion 81a, a front end bent portion 81b, a front bent portion 81c, and a rear end bent portion 81d. The front end bent portion 81 b locks a linkage mechanism 70 described later on the front end portion of the lateral support portion 81. The front bent portion 81c bends downward from the operating portion 8 toward the rear side over the front end portion of the horizontal support portion 81 and the center portion in the front-rear direction of the horizontal support portion 81. The rear end bent portion 81 d bends downward at the rear end portion of the lateral support portion 81. The support shaft portion 82 is welded and fixed to the lower surface of the flat surface portion 81a, and has a pin hole having an axial core P along the vertical direction of the machine body as an axis. A pin hole is formed in the swing base end portion of the operation lever portion 83, and the operation lever portion 83 and the support shaft portion 82 are connected by a pin 85. Thereby, the operation lever part 83 is comprised so that the axial center P can be rock | fluctuated around an axial center.

  A gripping portion 83 </ b> A is provided at the swinging tip portion of the operation lever portion 83 so that the driver swings. The lever portion 84 is shorter than the length of the operation lever portion 83, is connected to the operation lever portion 83 at the shaft core P, and swings integrally with the operation lever portion 83. A pin hole is formed in the swinging tip portion of the lever portion 84, and the swinging tip portion of the lever portion 84 and the linkage mechanism 70 described later are connected.

  As shown in FIGS. 18 and 19, a mounting bracket 86 </ b> A and a stay 86 </ b> B are provided as a configuration for supporting the operation tool 80. The mounting bracket 86A is formed in a long plate shape, and bolt insertion holes are formed in the upper and lower ends. One end of a stay 86B bent in an L shape is welded and fixed to the upper part of the mounting bracket 86A. A pair of front and rear mounting brackets 86A, 86A are bolted to the wall portion 8L of the operating portion 8, and the other end portion of the stay 86B extends leftward from the operating portion 8. A bolt insertion hole is formed in the other end portion of the stay 86B, and the other end portion of the stay 86B and the flat portion 81a are bolt-fixed in a state of engaging with the bolt insertion hole formed in the flat portion 81a of the lateral support portion 81. Is done. Thereby, the operation tool 80 is supported and fixed to the wall portion 8L of the operation unit 8.

  The operation tool 80 shown in the above-described embodiment is provided on the wall 8L of the operation unit 8 provided with the cabin. For example, as illustrated in FIG. The structure provided in the wall part 8L in the outer side of the driving | running | working part 8 by which was open | released is also possible. In FIG. 20, a side panel 9 and a sound insulating plate 140 that rises higher than the upper surface of the side panel 9 are provided on the left side of the operation unit 8. The sound insulating plate 140 insulates the noise of the transport feeder 4 disposed on the left side of the machine body from the wall 8L. In addition, when an engine (not shown) is disposed below the operation unit 8, the engine air rises from between the operation unit 8 and the transport feeder 4, so that the engine air is driven by the sound insulation plate 140. The possibility of entering the portion 8 can be prevented. The operation tool 80 is supported in a state of protruding to the front side from the front end of the sound insulating plate 140. Accordingly, the driver can operate the operation tool 80 without being blocked by the sound insulating plate 140.

[Linkage mechanism]
Since the linkage mechanism 70 is linked over the interlocking mechanism 50 and the operation tool 80, the locked portion 54 of the interlocking mechanism 50 is configured to swing by the swinging operation of the operation tool 80. As shown in FIGS. 9, 14 to 20, the linkage mechanism 70 is provided with a cable 71, the outer periphery of the cable 71 is covered with a protective tube 71 </ b> A, and the outer periphery of both ends of the cable 71 is a guide tube 71 </ b> B. It is covered with 71B. The cable 71 is made of, for example, a stainless steel wire, but may be a cable-like body such as a chain.

  A support portion 56 that supports one end portion of the linkage mechanism 70 is welded and fixed to an upper end portion of the front side portion 51 b in the interlocking frame 51. A guide tube 71 </ b> B at one end of the cable 71 is bolted to the support portion 56. The guide tube 71B is bolted above the support portion 56 so that rainwater or the like does not enter the cable 71. A guide tube 71B at the other end of the cable 71 is bolted to the front end bent portion 81b. One end portion 71a of the cable 71 is connected by being pinned to the pin hole 54Bb of the swing plate portion 54B in the locked portion 54. With this configuration, when the cable 71 is pulled, the swing plate portion 54B swings counterclockwise in FIG. 14, and when the cable 71 is loosened, the swing plate portion 54B is rotated in FIG. 14 by the biasing force of the biasing mechanism 54E. Swing around.

  A dead center mechanism 72 is provided at the end of the linkage mechanism 70 where the operation tool 80 is located, and the dead center mechanism 72 is formed to be bent in a crescent shape. The dead center mechanism 72 is disposed so that both end portions are positioned in the longitudinal direction of the machine body and the center portion is closer to the side where the transport feeder 4 is positioned. Pin holes are formed at both ends of the dead center mechanism 72 in the front-rear direction. The other end portion 71 b of the cable 71 is connected to the pin hole at the front end of the dead center mechanism 72, and the swinging tip portion of the lever portion 84 of the operating tool 80 is connected to the pin hole at the rear end of the dead center mechanism 72.

  The operation lever portion 83 can swing to the front side until it is locked to the rear end portion of the front bent portion 81c, and can swing to the rear side until it is locked to the left end portion of the rear end bent portion 81d. That is, the rear end portion of the front bent portion 81c is the front swing end portion of the operation lever portion 83, and the left end portion of the rear end bend portion 81d is the rear swing end portion of the operation lever portion 83. When the operation lever portion 83 is swung to the rear side of the machine body, the cable 71 is pulled to the side where the operation tool 80 is located, and the swing plate portion 54B resists the biasing force of the biasing mechanism 54E in FIG. It swings counterclockwise and the switching tool 54C comes off the guide hole 51d. As a result, the interlocking mechanism 50 is released. When the operating lever portion 83 is swung to the front side of the machine body, the cable 71 is loosened, and the swinging plate portion 54B swings clockwise in FIG. 14 by the biasing force of the biasing mechanism 54E, and the switching tool 54C. Is hooked on the guide hole 51d. As a result, the interlocking mechanism 50 enters the interlocking state. Thus, the position of the operating tool 80 before the swinging is the interlocking position where the interlocking mechanism 50 is in the interlocking state, and the position of the operating tool 80 after the swinging is the releasing position where the interlocking mechanism 50 is in the releasing state. It is.

  In the operation lever portion 83, at the swing position D shown in FIG. 18, the front end and the rear end of the dead center mechanism 72 are in a state along the axis E, and the cable 71 is most pulled to the side where the operation tool 80 is located. Therefore, it becomes the dead point of the dead point mechanism 72. At the dead point of the dead point mechanism 72, the swing plate portion 54B is swung to a position farthest from the guide hole 51d.

  When the swinging position of the operating lever portion 83 is located on the front side of the machine body relative to the swinging position D, the operating lever portion 83 is moved to the left end portion of the front end bent portion 81b via the cable 71 by the biasing force of the biasing mechanism 54E. It is urged to swing until it is locked. At this time, the switching tool 54C is hooked on the guide hole 51d, and the interlocking mechanism 50 enters the interlocking state.

  Since the cable 71 is loosened when the swinging position of the operating lever portion 83 is located on the rear side of the machine body from the swinging position D, the operating lever portion 83 is connected via the cable 71 by the biasing force of the biasing mechanism 54E. The rear end bent portion 81d is urged to swing until it is engaged with the left end portion. At this time, the swing plate portion 54B is closer to the position where the guide hole 51d is located than the position of the swing plate portion 54B at the dead point of the dead center mechanism 72 described above, but the switching tool 54C is detached from the guide hole 51d. Thus, the state of being positioned in front of the interlocking frame 51 is maintained, and the interlocking mechanism 50 is released.

[Auxiliary wheel]
As shown in FIG. 21 and FIG. 22, a configuration is possible in which auxiliary rolling wheels 120 are rotatably provided at the left and right ends of the residue processing unit 20. For example, the auxiliary rolling device 120 is attached and fixed to the right vertical frame 23A and the left vertical frame 23C so as to be at a desired height position, so that the sub-cutting device 21 is held at a desired height or higher while cutting. It can be performed. For this reason, the possibility of the sub-cutting device 21 and the receiving blade 24 being buried in the ground and being damaged during the cutting of the airframe is reduced. The outer periphery of the auxiliary wheel 120 is formed in a gear shape, and the auxiliary wheel 120 is configured to easily get over a step or an obstacle in the field. The auxiliary rollers 120 may be provided at both ends of the left and right side ends of the residue processing unit 20 or may be provided at either one of the left and right side ends of the residue processing unit 20. Good. The auxiliary wheel 120 may be provided at the left and right ends of the horizontal frame 22 or may be provided at the vertical frame 23.

[Another embodiment]
The present invention is not limited to the configuration exemplified in the above-described embodiment, and a typical alternative embodiment of the present invention will be exemplified below.

(1) Although the front end of the residue processing unit 20 shown in the above-described embodiment is located in front of the lower front end 8F of the operation unit 8 and behind the inlet 4a of the transport feeder 4, the residue processing The position in the front-rear direction of the front end of the portion 20 can be appropriately changed between the front-rear position L1 of the inlet 4a and the front-rear position L2 of the lower front end 8F. For this reason, the auxiliary cutting device 21 does not have to overlap with the lower front end 8F of the operation unit 8 in plan view.

(2) The vibration damping mechanism 40 shown in the above-described embodiment is configured such that a pair of vibration damping sprockets 41A, 41B, 41C, and 41D are provided on the tension side and the loose side of the endless chain 36, respectively. However, the present invention is not limited to the above-described embodiment. For example, an endless belt may be used instead of the endless chain 36, and a pair of pulleys may be used instead of the pair of damping sprockets 41A, 41B, 41C, 41D. In this case, the pair of pulleys may be configured to receive the deflection of the endless chain 36.

(3) The damping sprocket 41 shown in the above-described embodiment may be provided only on either the tension side or the loose side of the endless chain 36. Further, the number of damping sprockets 41 can be appropriately changed according to the length of the endless chain 36 extending between the output sprocket 35 and the input sprocket 31.

(4) In the residue processing unit 20 shown in the above-described embodiment, the vertical frame 23 is supported by the bearing portions 13A, 13B, and 13C provided at the front portion of the body frame 1. The vertical frame 23 may be supported by the lower portion of the transport feeder 4 without being limited to the above-described embodiment.

(5) The number of the plurality of vertical frames 23 shown in the above-described embodiment can be changed as appropriate. For example, a configuration in which two vertical frames 23 are provided on the left and right sides of the horizontal frame 22 or a configuration in which four or more vertical frames 23 are provided in the horizontal direction of the horizontal frame 22 may be employed.

(6) The shapes of the plurality of vertical frames 23 shown in the embodiment described above can be changed as appropriate. For example, in order to avoid interference between the vertical frame 23 and an unillustrated engine, transmission 62, or the like, the vertical frame 23 may be bent so as to be bent or bent. At this time, a reinforcing plate or the like may be provided at a curved portion or a bent portion of the vertical frame 23.

  The present invention is applicable to all combine units equipped with a residue processing unit.

3: Cutting part 3B: Main cutting device 4: Conveying feeder (grain feeder)
4a: Entrance 5: Threshing device 8: Driving unit 8R: Wall 12: Boarding / leaving step 20: Residual processing unit 21: Sub cutting device 22: Horizontal frame 23: Vertical frame 23A: Right vertical frame 23B: Intermediate vertical frame 23C: Left vertical frame 31: Input sprocket (input rotating body)
35: Output sprocket (output rotating body)
36: Endless chain (endless rotating body)
40: Damping mechanism 41A: Damping sprocket (rotating body)
41B: Damping sprocket (rotating body)
41C: Damping sprocket (rotating body)
41D: Damping sprocket (rotating body)

Claims (6)

The driving department,
A cutting part that is provided in front of the operation part, and that cuts the planted cereal of the field by a main cutting device;
A corn straw transporting device that transports the whole grain of the harvested corn straw after cutting to the threshing device from the reaping part;
A residue processing unit provided behind the cutting unit and cutting the residue after cutting by the cutting unit with a sub-cutting device;
Is provided,
The front end of the residue processing part is a combine located in front of the lower front end of the operation part and behind the inlet of the grain feeder.   The combine according to claim 1, wherein the sub-cutting device protrudes forward in a state of overlapping with a lower front end of the operation unit in a plan view. The residue processing unit includes a plurality of vertical frames extending downward and a horizontal frame extending to the left and right so as to extend to front end portions of the plurality of vertical frames and supporting the auxiliary cutting device. Of the plurality of vertical frames, the vertical frame at the end portion on which the operation unit is located is opposite to the boarding / exiting step protruding from the operation unit laterally outward of the machine body and the grain feeder in the operation unit. The combine according to claim 1 or 2, which is passed between a wall portion located on the side. An output rotating body is provided on the drive shaft of the cereal conveying device,
An input rotator for driving the auxiliary cutting device is provided in the residue processing unit,
An endless rotating body is wound around the output rotating body and the input rotating body,
4. The vibration control mechanism is provided between the output rotator and the input rotator, and is provided with a damping mechanism that locks the endless rotating body to suppress vibration of the endless rotating body. Combine as described in. The vibration damping mechanism has a pair of rotating bodies located on the outer peripheral side and the inner peripheral side of the endless rotating body,
The combine according to claim 4, wherein the endless rotating body is sandwiched between the pair of rotating bodies.   6. The combine according to claim 5, wherein the pair of rotating bodies are provided on both the tension side and the loose side of the endless rotating body.

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