JP2018110593A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine capable of suppressing occurrence of clogging of harvested crops on an auger.SOLUTION: A harvesting machine comprises: a harvesting header 21 for harvesting crops planted on a farm field; a feeder 22 which is connected to an opening A formed on the harvesting header 21, and transporting harvested crops harvested on the harvesting header 21 to a rear side; and an auger 27 which is supported to the harvesting header 21 in a rotatable state around a lateral axis X along a lateral direction, and laterally feeding the harvested crops toward the opening A. The auger 27 has: a cylindrical drum 52 which is driven to rotate around the lateral axis X; and a screw blade 54 which rotates by rotation of the drum 52 and acts to the harvested crops in lateral feeding action. The screw blade 54 is inclined toward the opening A side with respect to a vertical plane of an outer peripheral face of the drum 52 so as to approach the opening A as the screw blade is close to an outside of a radial direction of the drum 52.SELECTED DRAWING: Figure 6

Description

  The present invention includes a harvesting header that harvests a crop to be planted in a field, and a feeder that is connected to an opening formed in the harvesting header and that conveys the harvested crop harvested in the harvesting header backward. Related to the harvester.

  For example, the following patent document 1 describes a conventional harvester. The harvesting machine includes a harvesting header ("harvesting part frame" in Patent Document 1) for harvesting crops to be planted in a field and an opening formed in the harvesting header ("connection opening" in Patent Document 1). A feeder that is connected and conveys the harvested crop harvested in the harvesting header backward, and an auger that is supported by the harvesting header so as to be rotatable about a horizontal axis along the left-right direction and that feeds the harvested crop toward the opening. ("Patent document auger" in Patent Document 1).

JP 2013-183680 A

  In general, the feeder is connected to a portion of the harvest header that is biased to one side in the left-right direction with respect to the center in the left-right direction of the harvest header. For this reason, in the conventional harvester as described above, the supply amount of the harvested crop supplied to the feeder from the rotationally driven auger tends to be biased to either the left or right, and the crop is easily clogged in the feeder. It was.

  In view of the above circumstances, it has been desired to provide a harvester that can suppress the occurrence of clogging of harvested crops in the feeder.

  The characteristic configuration of the harvesting machine according to the present invention includes a harvesting header for harvesting a crop to be planted in a field, and an opening formed in the harvesting header, and the harvested crop harvested in the harvesting header is directed rearward. A feeder to be conveyed, an auger supported by the harvesting header so as to be rotatable about a horizontal axis along the left-right direction, and laterally feeding the harvested crop toward the opening; and disposed in the opening and laterally fed by the auger And a guide member for guiding the harvested crop toward the center in the left-right direction at the opening.

According to the present invention, the harvested crop harvested in the harvesting header is laterally fed toward the opening by the rotationally driven auger, and further guided to the center in the left-right direction in the opening by the guide member disposed in the opening. The As a result, it is avoided that the harvested crop supplied to the feeder is biased in the left-right direction, and the harvested crop is supplied to the center in the left-right direction of the feeder, so that the harvested crop can be smoothly conveyed by the feeder. It becomes possible, and the possibility that the crops are clogged in the feeder can be effectively reduced.
Therefore, according to this invention, generation | occurrence | production of the clogging of the harvested crop in a feeder can be suppressed.

  In the present invention, it is preferable that the guide member is provided in a state of protruding from the outer peripheral portion of the opening toward the center in the left-right direction of the opening.

  According to this configuration, since the harvested crop is guided from the outer periphery of the opening to the center in the left-right direction in the opening by the guide member, the harvested crop is less likely to be biased to the left and right in the feeder. The occurrence of crop clogging can be suitably suppressed.

  In the present invention, it is preferable that the guide member is provided in a state of being separated from the upper edge portion of the opening and the lower edge portion of the opening.

  According to this configuration, it is possible to distribute the harvested crop in the space between the upper edge portion of the opening and the upper end portion of the guide member and in the space between the lower edge portion of the opening and the lower end portion of the guide member. Become. Thus, for example, when the harvested crop is discharged from the feeder side to the harvesting header side when the harvested crop is clogged in the feeder, the guide member does not hinder the discharge of the harvested crop. The harvested crops can be discharged smoothly.

  In the present invention, the feeder is connected to a portion of the harvest header that is biased to one side in the left-right direction from the center in the left-right direction in the harvest header, and the guide member is on the other side in the left-right direction with respect to the center in the left-right direction in the opening It is preferable to be provided at a location that is biased.

  According to this configuration, since the feeder is connected to a portion of the harvest header that is biased to one side in the left-right direction with respect to the center in the left-right direction in the harvest header, the supply amount of the harvested crop supplied to the opening is the other in the left-right direction. The area on the side tends to be larger than the area on one side in the left-right direction. However, since the harvested crop supplied to the opening from the other side in the left-right direction is guided by the guide member to the center in the left-right direction of the opening, the harvested crop is biased and supplied to the other side in the left-right direction of the feeder. The occurrence of a clogging of harvested crops in the feeder can be suitably suppressed.

  In the present invention, the feeder includes a driving wheel body to which a driving force is input, a driven wheel body spaced apart from the driving wheel body in the front-rear direction, and the driving wheel body and the driven wheel body. A pair of left and right endless rotating bodies wound around and a plurality of transport bodies that are arranged across the pair of left and right endless rotating bodies and arranged side by side along the rotation direction of the pair of left and right endless rotating bodies; The guide member is extended along the left-right direction from a side portion on the other side in the left-right direction in the opening to a position corresponding to the endless-rotating body on the other side in the left-right direction, of the pair of left and right endless rotating bodies. It is preferable that

  According to this configuration, in the feeder, the harvested crop is transported using the plurality of transport bodies arranged side by side along the rotational direction of the pair of left and right endless rotating bodies that are rotationally driven. Since the guide member extends along the left-right direction from the side portion on one side of the opening left-right direction to the position corresponding to the endless rotating body on the other side of the left-right direction, the harvest that is guided by the guide member and supplied to the feeder The crop is smoothly handed over to the rotationally driven carrier. Therefore, occurrence of clogging of the harvested crop in the feeder can be suitably suppressed, and the harvested crop can be stably conveyed by the feeder.

  In the present invention, it is preferable that the guide member is supported by the rear wall in a state along the rear wall of the harvesting header.

  According to this configuration, since the guide member is supported in a state along the rear wall using the rear wall of the harvest header, the guide member is stably supported and a simple structure can be achieved.

  In the present invention, it is preferable that the rear wall is provided with a scraper that exerts a scraping action on a harvested crop that is laterally fed by the auger, and the guide member is attached to the scraper.

  According to this configuration, the harvested crop that is about to jump out of the auger in the radial direction by the centrifugal force is scraped off by the centrifugal force by the scraper provided on the rear wall. Thereby, it becomes difficult to produce the entanglement of the heel with respect to an auger. Since the guide member for guiding the crop that is laterally fed by the auger toward the center in the left-right direction in the opening is attached using such a scraper, the structure can be simplified.

  In the present invention, the auger is rotatably attached to the auger around the horizontal axis, and is attached to the outer periphery of the drum in a spiral shape. A screw blade, and a conveying terminal position of the screw blade on the side where the guide member is located is set at a position closer to the center of the opening in the left-right direction than the guide member in the left-right direction. Is preferred.

  According to this configuration, the harvested crop is laterally fed to the center side of the opening from the guide member by the screw blades of the auger, so that the harvested crop is supplied to a position closer to the center in the left-right direction in the feeder. The occurrence of clogging of harvested crops can be suitably suppressed.

  In the present invention, the auger is rotatably attached to the auger around the horizontal axis, and is attached to the outer periphery of the drum in a spiral shape. It is preferable that the screw blade is provided, and the conveying surface in a portion of the screw blade located in the vicinity of the opening is inclined so as to be closer to the opening as it is located on the outer side in the radial direction of the drum. .

  According to this configuration, the conveying surface in the portion of the screw blade located near the opening is inclined so as to be closer to the opening side as it is located on the outer side in the radial direction of the drum. It becomes difficult to scatter to the outside in the radial direction, and the harvested crop can be efficiently fed toward the opening.

  In the present invention, it is preferable that the bottom portion of the feeder and the bottom portion of the harvesting header are connected so as to be linear in a side view.

According to this structure, it can be set as the structure where the retention of a harvested crop does not arise easily between the bottom part of a feeder and the bottom part of a harvest header. Thereby, the supply amount of the harvested crop supplied from the harvesting header to the feeder is stabilized, and the occurrence of clogging of the harvested crop in the feeder can be suitably suppressed.
The concept that “the bottom of the feeder and the bottom of the harvesting header are connected in a straight line” is that the bottom of the feeder and the bottom of the harvesting header are connected at an angle of 180 degrees. In addition to the above-described one, the bottom of the feeder and the bottom of the harvesting header are connected so as to form an angle in the vicinity of 180 degrees.

It is a whole side view of a full throwing type combine combine. It is a whole top view of a full throwing type combine. It is a side view which shows the internal structure of a harvesting part. It is a rear view which shows a harvest header. It is a top view which shows a harvesting part. It is a top view which shows the internal structure of a harvesting part. It is a side view showing the circumference of a harvest header. It is a rear view which shows the periphery of a cutting blade guard. It is a front view which shows the periphery of a weight. It is a perspective view which shows the auger in another embodiment. It is sectional drawing which shows the auger in another embodiment. It is a side view which shows the internal structure of the harvesting part in another embodiment.

  Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings. In the following description, the left and right are determined based on the forward direction of the ordinary combine (an example of “harvesting machine”) shown in FIGS. 1 and 2.

  Ordinary combine harvesters are configured to harvest crops such as rice, wheat, and soybeans. As shown in FIGS. 1 and 2, the ordinary combine is provided with a traveling machine body having a machine body frame 11 supported by a pair of left and right crawler traveling devices 10. The normal combine is threshed by the engine 12 for supplying driving force, the harvesting unit 13 for harvesting the planted crop, the threshing device 14 for threshing the harvested crop harvested by the harvesting unit 13, and the threshing device 14. A grain storage unit 15 that stores the stored grain, an unloader 16 that can discharge the grain stored in the grain storage unit 15 to the outside of the machine, a driving unit 17 that is operated by a driver on board, and the like. Yes.

The harvesting unit 13 is disposed on the front side of the traveling machine body. The threshing device 14 is disposed on the rear side of the harvesting unit 13. The grain storage unit 15 is disposed on the lateral side of the threshing device 14.
The operation unit 17 is located on the center side of the traveling machine body and is disposed on the front side of the grain storage unit 15. The driving unit 17 is provided with a driving seat 18 on which a driver is seated, various operation levers 19 for input operation, and the like.

  As shown in FIG. 1, the harvesting unit 13 is swinging around a horizontal harvesting lift axis P <b> 1 by a telescopic drive of a harvesting lift cylinder 20 made of a hydraulic cylinder, and is in a descending work state in which a harvesting work is performed. And the ascending non-working state in which the harvesting operation is not performed, it is configured to be movable up and down with respect to the body frame 11 side. The harvesting unit 13 includes a harvesting header 21 configured to harvest a crop to be planted in a field, a feeder 22 that conveys the harvested crop harvested by the harvesting header 21 backward to the threshing device 14, Is provided.

[About harvest header]
As shown in FIG. 2, the left-right width (cutting width) of the harvesting header 21 is larger than the distance between the lateral outer ends of the left and right crawler travel devices 10. In other words, the left and right crawler travel devices 10 formed on the cut crop of the planted crop by the harvest header 21 are largely secured in the left-right direction. In other words, the left and right widths of the left crawler traveling device 10 which are often located on the side far from the driving unit 17 and become the uncut side are the left and right widths of the right crawler traveling device 10. It is larger than the width. This makes it difficult for the left and right crawler traveling devices 10 to step on unharvested crops when the traveling machine body turns.

  As shown in FIGS. 1 and 2, the harvesting header 21 includes a harvesting frame 23, a pair of left and right dividers 24, a rotating reel 25, a cutting blade device 26, and an auger 27. The divider 24, the rotary reel 25, the cutting blade device 26, and the auger 27 are supported by the harvesting frame 23. The divider 24 is configured to divide the crops to be planted in the field into a crop to be harvested and a crop to be harvested. The rotary reel 25 is rotationally driven based on a driving force transmitted from the engine 12 via a reel transmission mechanism (not shown) constituted by a belt mechanism or the like, so that a crop to be harvested to be planted in a farm field. It is configured to perform the scraping. The rotary reel 25 is supported by the harvesting header 21 via a pair of left and right support arms 28 shown in FIGS. The rotary reel 25 can swing around the horizontal reel lifting axis P <b> 2 via the left and right support arms 28 by the expansion and contraction drive of a reel lifting cylinder 29 composed of a hydraulic cylinder provided for each of the left and right support arms 28. It is configured to be able to move up and down with respect to the harvesting frame 23. The cutting blade device 26 shown in FIG. 1 to FIG. 3 and FIG. 7 to FIG. 9 is formed in a clipper shape, and is configured to cut the planted crop stock that is scraped by the rotary reel 25. The auger 27 shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 7 collects the harvested crops cut by the cutting blade device 26 by laterally feeding them to the left and right central sides and transports them to the feeder 22 located on the rear side. It is configured as follows.

  As shown in FIG. 1 to FIG. 7, the harvesting frame 23 includes a transport deck 30 located below the auger 27, a pair of left and right side walls 31 respectively standing on the left and right ends of the transport deck 30, and a transport deck. 30 and a rear wall 32 connected to the rear end portions of the left and right side walls 31. As shown in FIGS. 2 to 6, the rear wall 32 has an opening for transporting the harvested crop to the feeder 22 side at a position biased to the left side that is one side in the left-right direction with respect to the center C <b> 1 in the left-right direction. A is formed. As shown in FIGS. 4 to 6, the opening A formed in the rear wall 32 is provided with a guide member 34 for guiding the harvested crop. As shown in FIGS. 3 to 6, an upper scraper 35 (an example of “scraper”) and an upper scraper 35 that exert a scraping action on a harvested crop that is laterally fed by the auger 27. Is provided with a lower scraper 36 (an example of a “scraper”). The upper scraper 35 is provided in a pair of left and right with the opening A in between. The lower scraper 36 is provided in a pair of left and right with the opening A interposed therebetween. The upper scraper 35 and the lower scraper 36 are each made of an L-shaped angle member extending in the left-right direction, and are connected to the rear wall 32 by bolts.

[About feeder]
As shown in FIGS. 2, 3, 5, and 6, the feeder 22 is connected to an opening A formed in the harvesting header 21. The feeder 22 is connected to a portion of the harvesting header 21 that is biased to the left side that is one side in the left-right direction from the center C1 of the harvesting header 21 in the left-right direction.

  As shown in FIGS. 1 and 6, the feeder 22 includes a feed case 40, a driving wheel body 41, a driven wheel body 42, an endless rotating body 43 including a pair of left and right endless rotating chains, and a plurality of And a transport body 44.

  The feed case 40 is configured in a rectangular tube shape. The feed case 40 includes a bottom plate portion 45, left and right side plate portions 46 erected from the left and right end portions of the bottom plate portion 45, and a top plate portion 47 that covers the upper side of the left and right side plate portions 46. Yes. At the front end portion of the feed case 40, an inlet portion communicating with the opening A formed in the harvest header 21 is formed. Moreover, the exit part connected to the insertion port of the threshing apparatus 14 is formed in the rear-end part of the feed case 40. As shown in FIG.

  A driving force from the engine 12 is input to the driving wheel body 41. As shown in FIG. 1, the driven wheel body 42 is disposed to be separated from the driving wheel body 41 in the front-rear direction, and is positioned on the front side of the driving wheel body 41. As shown in FIGS. 1 and 6, the left and right endless rotating bodies 43 are wound around a driving wheel body 41 and a driven wheel body 42, respectively. Each of the plurality of transport bodies 44 extends along the left-right direction, and spans a pair of left and right endless rotating bodies 43. Each conveyance body 44 is arranged side by side along the rotation direction of the pair of left and right endless rotation bodies 43. The left and right end portions of each transport body 44 extend in the left-right direction so as to approach the side plate portion 46 of the feed case 40 rather than the endless rotating body 43.

  The feeder 22 forwardly rotates the left and right endless rotating bodies 43 so as to convey the harvested crop from the harvesting header 21 toward the threshing device 14, and conveys the harvested crop from the threshing device 14 toward the harvesting header 21. Thus, it is configured to be able to switch between the reverse rotation state in which the left and right endless rotating bodies 43 are driven. During normal times, the feeder 22 is driven in a normal rotation state, and conveys the harvested crop supplied from the harvesting header 21 through the opening A toward the threshing device 14. On the other hand, when the harvested crop is clogged in the feeder 22, it is driven in a reverse state, and the harvested crop in the feeder 22 can be discharged to the harvesting header 21 side through the opening A.

[About connection of harvest header and feeder]
As shown in FIG. 3, the lower connected portion 37 </ b> A positioned at the lower rear end of the harvesting header 21 and the lower connecting portion 37 </ b> B positioned at the lower front end of the feeder 22 include bolts or the like (not shown) ). A claw body at the front end of the upper connecting portion 38 located at the upper front end of the feeder 22 enters the opening A of the harvesting header 21 to support the harvesting header 21 from below. Further, a claw body at the front end of the support structure 39 connected and fixed to the right side of the feeder 22 is formed on the rear wall 32 on the opposite side of the opening A across the horizontal center C1 of the harvest header 21. The harvesting header 21 is supported from below by entering the connection port B (see FIGS. 4 and 5).

  As shown in FIG. 3, the harvesting header 21 and the feeder 22 are configured such that, in a side view, the bottom plate portion 45 located at the bottom of the feeder 22 and the transport deck 30 located at the bottom of the harvesting header 21 are linearly formed. It is connected to become. Specifically, the bottom plate portion 45 located at the bottom of the feeder 22 and the transport deck 30 located at the bottom of the harvesting header 21 are connected in a straight line so as to form an angle of 180 degrees.

[About guide members]
The guide member 34 shown in FIGS. 4 to 6 is a rigid plate having wear resistance. As shown in FIG. 4, the guide member 34 has a rectangular shape in the rear view. As shown in FIGS. 4 to 6, the guide member 34 is supported on the rear wall 32 by a flat support member 48. The guide member 34 is fastened together with the upper scraper 35 and the lower scraper 36 to the rear wall 32 by bolts. That is, the guide member 34 is attached to the upper scraper 35 and the lower scraper 36.

  As shown in FIGS. 4 to 6, the guide member 34 is disposed in the opening A. The guide member 34 is provided at a location biased to the other side in the left-right direction with respect to the center C2 in the left-right direction in the opening A. The guide member 34 is configured to guide the harvested crop that is laterally fed by the auger 27 toward the lateral center C2 side of the opening A. The guide member 34 is supported by the rear wall 32 in a state along the rear wall 32 of the harvesting header 21. The guide member 34 is provided in a state in which the whole projects from the outer peripheral portion of the opening A toward the left-right direction center C2 side of the opening A. The guide member 34 extends in the left-right direction from the side portion on the other side in the left-right direction in the opening A to a position corresponding to the endless turning body 43 on the other side in the left-right direction among the pair of left and right endless turning bodies 43. The guide member 34 is provided in a state of being spaced apart from the upper edge AU of the opening A and the lower edge AD of the opening A with a gap. That is, the guide member 34 is provided so as to partially close the opening A in the vertical direction. Therefore, when the feeder 22 is driven in the reverse rotation state, the upper space S1 formed between the upper edge AU of the opening A and the upper end of the guide member 34, and the lower edge AD of the opening A and the guide From the lower space S2 formed between the lower end of the member 34, the harvested crop can be discharged smoothly from the feeder 22 side toward the harvesting header 21 side.

[About Ogre]
As shown in FIGS. 1, 2, 5, and 6, the auger 27 is supported by the harvesting header 21 so as to be rotatable around a horizontal axis X along the left-right direction. The auger 27 is configured to laterally feed the harvested crop toward the opening A.

  As shown in FIGS. 5 and 6, the auger 27 is supported by the left and right side walls 31 of the harvesting frame 23 so as to be rotatable and is driven to rotate about the horizontal axis X in the left-right direction along the left-right direction. A drive shaft 49, an eccentric shaft 50 connected to the drive shaft 49 and decentered from the horizontal axis X along the left-right direction, and a cylindrical drum 52 fixed to the drive shaft 49 via a plurality of intermediate members 51 A plurality of fingers 53 fixed to the eccentric shaft 50, a pair of left and right screw blades 54, and a transport plate 55 are provided. One side of the drive shaft 49 in the left-right direction is rotatably supported by the left side wall 31. The other side of the drive shaft 49 in the left-right direction is rotatably supported by the right side wall 31 and has a protruding end 56 that protrudes laterally outward from the right side wall 31. An input rotating body 57 of an auger transmission mechanism that transmits the driving force of the engine 12 to the auger 27 is connected to the protruding end portion 56. The drum 52 is configured to be rotationally driven around the horizontal axis X in the left-right direction by the driving force of the engine 12. As shown in FIGS. 3, 5, 6, and 7, the left and right screw blades 54 are each configured to exert a lateral feed action on the harvested crop by the rotational drive of the drum 52. As the drum 52 is driven to rotate, each finger 53 rotates with the drum 52 and the eccentric shaft 50 is rotated about the horizontal axis X, so that each finger 53 moves back and forth on the outer peripheral surface of the drum 52. It has become. A triangular reinforcing plate 58 is fixed by welding or the like between the surface opposite to the conveying surface D of the left and right screw blades 54 and the outer peripheral surface of the drum 52.

[About screw blade length]
As shown in FIGS. 5 and 6, the right screw blade 54 is formed longer in the left-right direction than the left screw blade 54. The conveyance end position of the right screw blade 54 on the side where the guide member 34 is located is set at a position closer to the center C2 in the left-right direction in the opening A than in the left-right direction. The conveyance end position of the left screw blade 54 is set at a position closer to the center C2 in the left-right direction in the opening A than in the left end portion of the opening A in the left-right direction. Accordingly, the harvested crop is laterally fed by the left and right screw blades 54 to a position near the center C2 in the left-right direction in the opening A, and the harvested crop is supplied to the side of the feeder 22 in the left-right direction center (the left-right direction center C2 in the opening A) be able to.

  The distance W1 in the left-right direction between the left side plate portion 46 of the feeder 22 and the conveying terminal end of the left screw blade 54 is equal to the end on the left-right direction center C2 side in the opening A of the guide member 34 and the right screw. The distance W2 in the left-right direction between the blade 54 and the conveyance end portion is set to be approximately equal.

[Inclination of screw blades]
As shown in FIG. 6, the left and right screw blades 54 are inclined inwardly toward the opening A from 90 degrees with respect to the outer peripheral surface of the drum 52 by a predetermined angle R (for example, about 20 degrees). It is joined. That is, the conveyance surface D in the part located in the vicinity of the opening A in the screw blades 54 is inclined so as to approach the opening A side as it is located on the outer side in the radial direction of the drum 52. Accordingly, the left and right screw blades 54 suppress the harvested crop from jumping out of the drum 52 in the radial direction. As a result, the harvested crop is less likely to be wrapped around the drive shaft 49 of the auger 27 and the occurrence of clogging of the harvested crop in the auger 27 can be suitably suppressed.

  The left and right screw blades 54 are configured to join a plurality of divided blades that surround the outer peripheral surface of the drum 52 by 180 degrees. The reinforcing plate 58 is located at an intermediate position between the conveyance start end portion and the conveyance end portion of the divided blades. The reinforcing plate 58 is positioned so that the mounting angle of the left and right screw blades 54 with respect to the outer peripheral surface of the drum 52 is kept constant. The divided blades are joined with the conveyance downstream end portion of the conveyance surface D of the division blade on the conveyance downstream side being stepped down from the conveyance upstream end portion of the conveyance surface D of the division blade on the conveyance upstream side. ing. This makes it difficult for the harvested crop to be caught at the joint between the divided blades.

[Relationship between screw blades and fingers]
As shown in FIGS. 3 and 5 to 7, when the finger 53 protrudes from the outer peripheral surface of the drum 52 to the outer side in the radial direction of the drum 52, the harvested crop is pushed by the finger 53 to the outer side in the radial direction of the drum 52. However, since the left and right screw blades 54 are connected to the outer peripheral surface of the drum 52 so as to be positioned on the opening A side toward the outer side in the radial direction of the drum 52, the harvested crop is The action of the screw blades 54 prevents the drum 52 from jumping outward in the radial direction.

[Finger layout]
As shown in FIG. 6, the auger 27 is provided with ten fingers 53. Seven fingers 53 are provided at locations corresponding to the openings A. One finger 53 is provided on the left side of these seven fingers 53. Further, two fingers 53 are provided on the right side of these seven fingers 53 with a space therebetween. In this manner, since the two fingers 53 are arranged in the right region, which is longer in the left-right direction than the region on the left side of the opening A in the harvest header 21, with a gap therebetween, the right side of the harvest header 21 is arranged. The occurrence of tangling of harvested crops in the region is suitably suppressed.

[About transport plate]
The transport plate 55 shown in FIGS. 3, 5, and 7 is disposed on the center side of the auger 27. The conveying plate 55 is located between the left screw blade 54 and the right screw blade 54. The transport plate 55 has a triangular shape in a side view. A mounting plate 59 that is long in the left-right direction is fixed to the outer peripheral surface of the auger 27. The transport plate 55 is formed to have a lateral width that is substantially equal to the lateral width of the opening A. The transport plate 55 is connected and fixed to the mounting plate 59 with a plurality of bolts at intervals in the left-right direction. The conveyance plate 55 rotates integrally with the drum 52 that is driven to rotate, and conveys the harvested crop to the opening A side. The transport plate 55 is formed larger in size than the conventional plate. In other words, the conveyance plate 55 is formed so that the length in the radial direction of the drum 52 is longer and the length in the circumferential direction of the drum 52 is longer than that in the conventional plate. . Thereby, even if the processing amount of the harvested crop in the harvesting header 21 increases, the harvested crop is suitably transported by the transport plate 55.

[About weight]
As shown in FIGS. 7 to 9, the cutting blade device 26 includes a receiving blade body 61 connected and fixed to a fixed frame 60 fixed to the body frame 11 side, and a movable movable relative to the fixed frame 60. A movable blade 63 that is fixedly supported by the frame 62 and is movable in the left-right direction with respect to the receiving blade body 61 is provided. The movable blade 63 is configured to be driven based on the driving force from the cutting blade transmission mechanism 64 to which the driving force from the engine 12 is input.

  As shown in FIG. 7, the cutting blade transmission mechanism 64 includes a cutting blade drive shaft 65 along the left-right direction, a relay transmission shaft 66 along the front-rear direction, a conversion mechanism 67, a swing arm 68, A weight 69 is provided. The cutting blade drive shaft 65 is driven to rotate by receiving a driving force from the engine 12. The conversion mechanism 67 connects the cutting blade drive shaft 65 and the relay transmission shaft 66 so as to convert the rotation of the cutting blade drive shaft 65 in one direction into the reciprocating rotation of the relay transmission shaft 66. The swing arm 68 is connected and fixed to the front end portion of the relay transmission shaft 66. As shown in FIG. 9, the free end 68 </ b> B located at the lower end of the pivotal support 68 </ b> A of the swing arm 68 is rotatably connected to one end of the link 72 via the first bearing member 70. The other end of the link 72 is rotatably connected to the movable frame 62 via the second bearing member 71. In the swing arm 68, the free end 68B swings around the longitudinal axis Y which is the center of the pivotal support 68A. Thereby, the movable blade 63 is reciprocated in the left-right direction. The weight 69 is provided on the opposite side of the free end portion 68B with respect to the pivotal support portion 68A. By providing such a weight 69, vibration and noise generated by driving the movable blade 63 in the cutting blade device 26 can be suppressed. Thereby, the durability of the harvesting header 21 and the feeder 22 is improved, and the riding feeling in the driving unit 17 is improved.

[About the cutting blade guard]
As shown in FIGS. 7 and 8, a cutting blade guard 75 that protects the cutting blade device 26 is provided. The cutting blade guard 75 includes a plate member 76 and a round bar member 77. The round bar member 77 is fixed to the rear side of the plate member 76 by welding or the like. The round bar member 77 is a laterally U-shaped member whose front side is opened in a side view. The round bar member 77 is connected to the side wall 31 of the harvesting frame 23 via a bracket 78. The round bar member 77 is formed with a discharge space E through which mud, soot and the like pass. That is, since mud, slag, etc. can pass back or laterally outward through the discharge space E, clogging of mud, sledge, etc. is less likely to occur between the cutting blade guard 75 and the right side wall 31. A structure in which the first bearing member 70 and the like hardly deteriorate can be formed.

[Another embodiment]
Hereinafter, another embodiment that modifies the above embodiment will be described. Each of the following different embodiments is the same as the above-described embodiment except for the explanation items. Moreover, the said embodiment and each following another embodiment can be suitably combined unless a contradiction arises. The scope of the present invention is not limited to the above-described embodiment and each of the following embodiments.

  (1) In the above-described embodiment, an example in which the harvested crops are prevented from scattering to the outside in the radial direction of the drum 52 by the screw blades 54 attached in an inclined state with respect to the outer peripheral surface of the drum 52 is exemplified. However, it is not limited to this. It may be as shown in the following (1-1) or (1-2).

[Separate induction plate]
(1-1) For example, as shown in FIG. 10 and FIG. 11, the conveyance surface D in the portion located near the opening A in the screw blade 54 is joined to the outer peripheral surface of the drum 152 at an angle of 90 degrees. The auger 127 provided with the other screw blade | wing 154 currently used may be sufficient.
Then, it is preferable that a guide plate 100 is provided at each conveyance end of the screw blade 154. The guide plate 100 has a screw blade 154 so as to form a conveyance surface D that is inclined inward toward the opening A while being inclined by a certain angle (about 20 degrees) with respect to the conveyance surface D of the screw blade 154. In addition, each is fixed by welding or the like. The guide plate 100 is located between the pair of attachment portions 101 that are located at both ends and attached to the conveyance surface D of the screw blade 154 and the pair of attachment portions 101, and is farther from the conveyance surface D than the attachment portion 101. And a mountain portion 102. Thus, the harvested crop can be obtained by simply attaching the guide plate 100 to the existing screw blade 154 without retrofitting the screw blade 154 and by the inclination between the mounting portion 101 and the mountain portion 102 of the guide plate 100. Can be suppressed from being pushed out to the outside of the auger 27 in the radial direction. Note that a plurality of guide plates 100 may be provided for each of the screw blades 154. In addition, the guide plate 100 may be fixed to the screw blade 154 by bolt connection or the like.

[About anti-scatter plate]
(1-2) For example, as shown in FIG. 12, a scattering prevention plate 170 may be provided on the front side of the rear wall 32 of the harvesting header 21. The anti-scattering plate 170 is positioned above the auger 27 on the outer side in the radial direction of the auger 27, and is provided with a covering surface along the outer periphery of the auger 27. Although not particularly illustrated, the anti-scattering plate 170 is located on the right side where the amount of the harvested crop is conveyed more than the opening A, and has a left-right width equivalent to a pitch at which the screw blades spiral 360 degrees. The anti-scattering plate 170 is fastened together with the upper scraper 35 and bolts. In other words, the scattering prevention plate 170 is attached to the upper scraper 35.
The distance between the anti-scattering plate 170 and the left and right screw blades 54 is set to be substantially the same as the distance between the transport deck 30 and the left and right screw blades 54. The covering surface suppresses crops that are about to jump out of the auger 27 in the radial direction. This makes it difficult for the auger 27 to be wrapped around the harvested crop, and the auger 27 can be suitably avoided from being locked due to clogging of the harvested crop. The scattering prevention plate 170 may be provided on both the left and right sides of the opening A.

  (2) In the above-described embodiment, the guide member 34 provided as a whole projecting from the outer peripheral portion of the opening A toward the left-right direction center C2 side of the opening A is illustrated, but the present invention is not limited thereto. Another guide member provided in a state in which only a part protrudes from the outer peripheral portion of the opening A toward the left-right direction center C2 side of the opening A may be used.

  (3) In the above-described embodiment, the guide member 34 having a rectangular shape is illustrated, but is not limited thereto. For example, it may be a guide member formed in another shape such as a triangular shape or a circular shape.

  (4) In the above-described embodiment, the guide member 34 provided in a state of being separated from the upper edge AU of the opening A and the lower edge AD of the opening A is illustrated, but the present invention is not limited thereto. For example, another guide member separated from only one of the upper edge AU of the opening A or the lower edge AD of the opening A may be used.

  (5) In the above-described embodiment, it extends along the left-right direction from the side portion on the other side in the left-right direction in the opening A to a position corresponding to the endless rotating body 43 on the other side in the left-right direction. Although the illustrated guide member 34 is illustrated, it is not limited to this. For example, it may be another guide member formed in a length that does not reach the position corresponding to the endless rotating body 43 on the other side in the left-right direction.

  (6) In the above-described embodiment, the guide member 34 is supported by the rear wall 32 in a state along the rear wall 32 of the harvesting header 21, but is not limited thereto. For example, another guide member supported by the rear wall 32 in an angle with the rear wall 32 of the harvesting header 21 so as to slightly enter the feeder 22 side may be used.

  (7) In the above-described embodiment, the guide member 34 is attached to the upper scraper 35 and the lower scraper 36. However, the present invention is not limited to this. For example, the guide member 34 may be attached to a location on the rear wall 32 that is different from the upper scraper 35 and the lower scraper 36.

  (8) In the above-described embodiment, the conveyance end position of the screw blade 54 on the side where the guide member 34 is located is set at a position closer to the center C2 in the left-right direction in the opening A than the guide member 34 in the left-right direction. Although the thing is illustrated, it is not restricted to this. For example, the conveyance end position of the screw blade 54 on the side where the guide member 34 is located may be set on the side farther from the center C2 in the opening A than the guide member 34 in the left-right direction.

  (9) In the above-described embodiment, the bottom plate portion 45 located at the bottom of the feeder 22 and the transport deck 30 located at the bottom of the harvesting header 21 are connected so as to form an angle of 180 degrees. However, it is not limited to this. For example, the bottom plate portion 45 located at the bottom of the feeder 22 and the transport deck 30 located at the bottom of the harvesting header 21 may be connected in a substantially straight line so as to form an angle of about 180 degrees.

  (10) In the embodiment described above, the endless rotating body 43 is exemplified as the “endless rotating body”, but an endless rotating belt limited to this may be used.

  (11) In the above-described embodiment, left and right expressions are used, but the left and right structures may be reversed.

  The present invention includes a harvesting header that harvests a crop to be planted in a field, and a feeder that is connected to an opening A formed in the harvesting header and that conveys the harvested crop harvested in the harvesting header backward. For example, it can be used for other harvesting machines such as a corn harvesting machine in addition to the above-described ordinary combine harvester.

21: Harvest header 22: Feeder 27: Auger 32: Rear wall 34: Guide member 35: Upper scraper (scraper)
36: Lower scraper (scraper)
41: Driving wheel body 42: Driven wheel body 43: Endless rotating body 44: Conveying body 52: Drum 54: Screw blade A: Opening AD: Lower edge portion AU: Upper edge portion C1: Left / right direction center C2: Left / right direction center D : Transport surface X: Horizontal axis

Claims (4)

Harvest header to harvest crops to be planted on the field,
A feeder connected to an opening formed in the harvesting header and conveying the harvested crops harvested in the harvesting header backward;
An auger supported by the harvesting header so as to be rotatable around a horizontal axis along the left-right direction, and transversally harvesting the harvested crop toward the opening;
The auger includes a cylindrical drum that is rotationally driven around the horizontal axis, and screw blades that are attached to the outer peripheral surface of the drum and rotate by the rotational driving of the drum to act laterally on the harvested crop. And
The harvesting machine in which the screw blade is inclined toward the opening side with respect to the vertical surface of the outer peripheral surface of the drum so that the screw blade is closer to the opening as it is located on the outer side in the radial direction of the drum.   The harvesting machine according to claim 1, wherein the screw blades are formed into a series of blades by joining a plurality of divided blades divided in the circumferential direction of the drum.   In the plurality of divided blades, the upstream end in the transport direction on the transport surface of the split blade on the downstream side in the transport direction is stepped down from the downstream end in the transport direction on the transport surface of the split blade on the upstream in the transport direction. The harvesting machine according to claim 2, wherein the harvesting machines are joined together. The opening is formed at an intermediate portion of the harvesting header, and the auger is extended to the left and right across the opening;
Both the screw blades located on one side in the left-right direction with respect to the opening and the screw blades located on the other side in the left-right direction with respect to the opening are located on the opening side with respect to the vertical surface of the outer peripheral surface of the drum. The harvesting machine according to any one of claims 1 to 3, wherein the harvesting machine is inclined toward the front.

Images