CN113677189B - Harvester - Google Patents

Abstract

The harvester is provided with: a harvesting frame (8) provided with right and left side walls (15); a cutting device (10) which is provided on the harvesting frame (8) so as to be positioned between the right and left side walls (15) and cuts the crops in the field; and a divider (12) provided on the side wall (15) so as to protrude forward of the cutting device (10). The side wall (15) has a flat bottom surface (33) at a portion adjacent to the cutting device (10). A lower part (34B) of the grain divider (12) is provided with a bulging part (43) bulging downwards than an imaginary line (B1) comprising the bottom surface (33) in side view.

Description

Harvester

Technical Field

The present invention relates to a harvester (harvester) and a combine harvester.

Background

Conventionally, there is a harvester including a harvesting unit for harvesting crops in a field.

In a harvesting unit of a general-type combine harvester as an example of the harvester, as disclosed in patent document 1, right and left side walls are provided on a harvesting frame, a cutting device is provided on the harvesting frame so as to be positioned between the right and left side walls, and a crop divider is provided on the side walls and protrudes forward from the cutting device.

Thus, the crop in the field is divided into the crop introduced into the harvesting portion and the crop left in the field to be harvested in the next trip by the side wall and the crop divider while the harvester is moving, and the crop introduced into the harvesting portion is cut by the cutting device and harvested.

In patent document 1, the flat bottom surfaces of the side walls and the lower portion of the crop divider are connected so as to be continuous in side view, the flat bottom surfaces of the side walls and the lower portion of the crop divider are aligned on a straight line, and the lower portion of the crop divider is set at a position slightly separated upward from the field surface.

Conventionally, there is a harvester configured to collect harvested crops in a widthwise direction of a machine body by a lateral feed screw conveyor (auger) and to convey the harvested crops to a rear side by a feeder.

In a conventional combine harvester, which is an example of a harvester, there are the following configurations: a slide guide body which slidably guides the rake body so as to project from the auger roller and retreat is located on the inner circumferential surface side of the auger roller, and is attached in a state where the inner circumferential side surface is sandwiched from the radially inner side by the plate-like coupling member of the fastener unit. The slide guide is made of a synthetic resin material that is less worn, and the connecting member is made of a metal material for firm support (see, for example, patent document 2).

Conventionally, as a combine harvester, for example, a combine harvester described in patent document 3 is known. The combine harvester described in patent document 3 includes a threshing device ("thresher [ D ] in the document) including: a threshing part (in the literature, "threshing part [ A ]), which threshes the harvested grain stalks; and a sorting unit (in the literature, "sorting unit [ B ]) provided below the threshing unit and sorting grains obtained by threshing the harvested stalks by the threshing unit.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2012-213342

Patent document 2: japanese patent laid-open publication No. 2017-158450

Patent document 3: japanese patent laid-open publication No. 2006-14708.

Disclosure of Invention

Problems to be solved by the invention

The problem [ 1 ] corresponding to the background art [ 1 ] is as follows.

As in patent document 1, if the lower portion of the divider is slightly spaced upward from the field surface, when dividing crops in the field by the divider, there is a possibility that the crops in the field near the divider enter between the lower portion of the divider and the field surface without being divided toward the cutting device, and are pulled out of the field by the divider along with the travel of the harvester and stay at the lower portion of the divider.

The invention aims to reduce the state that crops are retained at the lower part of a crop divider along with the travel of a harvester.

The problem corresponding to [ 2 ] in the background art [ 2 ] is as follows.

In the above-described conventional structure, if the tip of the raking body laterally fed to the screw conveyor wears down with long-term use, the raking body may enter the radially inner side of the slide guide body, may come out of the sliding state with the slide guide body, and may enter the inside of the screw conveyor drum and may not be able to pass out.

In particular, when the raking body is bent in the circumferential direction at the middle portion thereof by a reaction force acting on the raking body at the time of raking action of the harvested straw, the possibility of the above-mentioned penetration becomes high.

Therefore, a harvester that can continuously exert a good feeding action of the harvested grain stalks by the transverse feeding auger for a long period of time is desired.

The problem corresponding to [ 3 ] the background art [ 3 ] is as follows.

In the combine harvester described in patent document 3, there is room for improvement in that access to the inside of the threshing unit can be easily performed when performing maintenance of the inside of the threshing unit.

In view of the above circumstances, a combine harvester capable of easily performing maintenance on the inside of the threshing portion is desired.

Means for solving the problems

The solution corresponding to the problem [ 1 ] is as follows.

The harvester of the invention comprises: a harvesting frame provided with right and left side walls; a cutting device provided on the harvesting frame so as to be positioned between the right and left side walls, for cutting the crop in the field; and a divider provided on the side wall so as to protrude forward from the cutter; the crop dividing device is configured to divide the crop in the field by the side wall and the divider; a flat bottom surface provided at a portion of the side wall adjacent to the cutting device; the lower part of the divider is provided with a bulging part bulging downwards than an imaginary line including the bottom surface in a side view.

According to the present invention, in the flat bottom surface provided at the portion of the side wall adjacent to the cutting device, a bulging portion bulging downward in side view than an imaginary line including the flat bottom surface of the side wall is provided at the lower portion of the crop divider. By the proximity of the bulge portion to the field surface, the distance between the bulge portion and the field surface can be narrowed.

Accordingly, when the crop in the field is divided by the crop divider along with the travel of the harvester, the crop in the field near the crop divider is less likely to enter between the bulging portion and the field surface, and the crop in the field near the crop divider is appropriately divided without being pulled out from the field by the crop divider and is easily cut by the cutting device.

According to the present invention, it is possible to suppress the possibility that the crop in the field near the crop divider enters between the bulging portion of the crop divider and the field surface and stays, and to properly divide the crop in the field by the crop divider, thereby improving the harvesting performance.

In the present invention, it is preferable that the bulging portion extends from a lower portion of the crop divider to the bottom surface along a lower portion of the sidewall.

According to the present invention, since the bulge portion extends along the lower portion of the side wall to the flat bottom surface of the side wall, the narrow portion between the bulge portion and the field surface can be formed into a relatively long region in the front-rear direction, and therefore the possibility that crops in the field near the crop divider will enter between the bulge portion and the field surface can be further suppressed.

In the present invention, it is preferable that the lower portion of the crop divider is located on the imaginary line in a state where the bulging portion is removed.

In the case where there are many convex portions or raised portions on the field surface, the bulging portion may contact the field surface and be damaged, so according to the present invention, by detaching the bulging portion from the crop divider, it is possible to avoid the bulging portion from contacting the field surface and being damaged.

When the bulging portion is detached, the lower portion of the crop divider is located on the imaginary line, and therefore the crop in the field near the crop divider is less likely to enter between the lower portion of the crop divider and the field surface.

In the present invention, it is preferable that the bottom of the front part of the bulging part is formed in a rear-falling inclined shape; a lower portion of the divider is formed in an inclined shape that is inclined rearward and forward of the bulging portion; the front end of the bulging portion and the rear end of the lower portion of the crop divider on the front side of the bulging portion are smoothly continuous.

In a harvester, in order to prevent the tip end of the divider from contacting the field surface, as in patent document 1, the lower portion of the divider is formed in an inclined shape that descends backward, and the tip end of the divider is set to be spaced upward from the field surface.

In the foregoing state, according to the present invention, the front end portion of the bulging portion and the rear end portion of the lower portion of the crop divider on the front side of the bulging portion are smoothly continuous, and the front end portion of the lower portion of the crop divider is inclined downward from the front side of the bulging portion to the bottom of the front portion of the bulging portion. This makes it difficult for crops in the field to adhere to the vicinity of the tip of the projection and stay.

In the present invention, it is preferable that the bulging portion is formed in an inverted triangle bulging downward from the imaginary line in a side view; the length in the front-rear direction across the top of the bulging portion and the rear end of the bulging portion is set to be longer than the length in the front-rear direction across the top of the bulging portion and the front end of the bulging portion.

If the bulging portion is formed in an inverted triangle shape, a portion from the top to the rear side of the bulging portion in the bulging portion faces the field surface.

This makes it possible to form a narrow portion between the bulging portion and the field surface as a region relatively long in the front-rear direction, and therefore it is possible to further suppress the possibility of crops in the field near the crop divider entering between the bulging portion and the field surface.

In the present invention, it is preferable that the bulging portion is formed in an inverted triangle bulging downward from the imaginary line in a side view; a guide portion that guides the crop in the field toward a left and right center portion of the harvesting frame is provided on an inner surface of the crop divider in the harvesting width direction; the guide portion extends rearward along the inner surface from a position corresponding to a top portion of the bulging portion.

According to the present invention, since the crop in the field is guided toward the left and right center portions of the harvesting frame by the guide portions provided on the inner surface of the crop divider in the harvesting width direction, the possibility that the crop in the field near the crop divider enters between the bulging portion and the field surface can be further suppressed.

According to the present invention, in the case where the bulging portion is formed in an inverted triangle shape, the guide portion extends rearward along the inner surface of the crop divider from a position corresponding to the top of the bulging portion.

Accordingly, the leading end portion of the guide portion acts on the crop in the field relatively early and the guiding function of the guide portion is exerted relatively early, so that the possibility that the crop in the field near the crop divider enters between the bulging portion and the field surface can be further suppressed.

In the present invention, it is preferable that the present invention further comprises a screw conveyor that is rotationally driven around an axis along the left-right direction and that laterally feeds the crop cut by the cutting device; the rear end of the guide portion extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor and the cutting device in a side view.

In some harvesters, a screw conveyor is provided that is rotationally driven about a shaft center extending in the left-right direction and that laterally feeds the crop cut by the cutting device. The crop cut by the cutting device is conveyed laterally by the screw conveyor to be collected, and conveyed from the harvesting section to the threshing device, the storage section, and the like.

In the case where the guide portion is provided as described above, according to the present invention, the rear end portion of the guide portion extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor and the cutting device in a side view.

Thus, the crop in the field is guided by the guide portion toward the left and right center portions of the harvesting frame, cut by the cutting device, and the cut crop is guided by the guide portion to the auger without any difficulty.

In the present invention, it is preferable that the harvesting frame further includes another guide portion for guiding the crop toward a left and right center portion of the harvesting frame.

According to the present invention, since the guide portion is provided with another guide portion that guides the crop toward the left and right center portions of the harvesting frame in addition to the guide portion, the function of guiding the crop in the field toward the left and right center portions of the harvesting frame by the guide portion and the other guide portion is high.

In the present invention, it is preferable that the front end portion of the other guide portion is located on the rear side of the front end portion of the guide portion in a side view.

In the case where the guide portion and the other guide portion are provided, according to the present invention, the distal end portion of the other guide portion is located on the rear side of the distal end portion of the guide portion in a side view, and therefore, the guide function of the guide portion is performed and then the guide function of the other guide portion is performed.

Thus, the timing of the guide portion and the other guide portions being able to perform the guide function is shifted, and thus the guide portion and the other guide portions can easily perform the guide function sufficiently.

In the present invention, it is preferable that the cutting device further comprises a raking reel which is rotationally driven around an axis along the left-right direction and rakes the crop in the field toward the cutting device; the rake reel is positioned at a foremost position on the front side of the front end of the divider and at a rearmost position on the rear side of the front end of the divider, across the foremost end of the outer peripheral portion of the rake reel, and is capable of changing the position in the forward and backward directions.

In some harvesters, a raking reel is provided which is rotationally driven about a shaft center extending in the left-right direction and rakes a crop in a field toward a cutting device.

According to the present invention, the raking reel is capable of changing the position of the raking reel forward and backward by being positioned at the foremost position on the front side and the rearmost position on the rear side of the front end of the divider across the foremost end of the outer peripheral portion of the raking reel.

Accordingly, the position of the raking reel can be set for the crop in the field near the front end of the crop divider according to the state of the field, the state of the crop, and the like, so that the crop dividing performance of the crop divider can be improved.

[ 2 ] the solution corresponding to the problem [ 2 ] is as follows.

A feature of a harvester according to the present invention is a harvester including a lateral feed screw conveyor for transferring harvested grain stalks in a lateral width direction of a machine body, and a feeder for feeding the harvested grain stalks transferred by the lateral feed screw conveyor and then fed backward to the rear side of the machine body; the lateral feed screw conveyor includes: a cylindrical screw conveyor drum having a helical blade for transporting grain stalks disposed on an outer peripheral portion thereof and rotating around a horizontal shaft core; a raking body which integrally rotates while protruding and retreating from the screw conveyor drum with the rotation of the screw conveyor drum, and which sends the harvested straws to the feeder; a slide guide body which is provided at a position corresponding to an opening formed in the auger drum, has an insertion hole through which the rake body is inserted, and slidably guides the rake body so as to protrude from and retreat from the auger drum; and a stay for mounting the slide guide body to the screw conveyor drum; the stay is provided inside the screw conveyor drum; the insertion hole forming portion of the slide guide body, in which the insertion hole is formed, includes a protruding portion that protrudes radially inward from the stay.

According to the present invention, the raking body protrudes and retreats from the auger roller through the insertion hole formed in the slide guide body. In this case, since the insertion hole forming portion of the slide guide body, which forms the insertion hole, includes the protruding portion protruding radially inward, the width of the insertion hole forming portion in the radial direction, which guides the rake body, is increased.

As a result, even in the case where the leading end of the raking body is worn, the raking body can be prevented from entering the radially inner side of the sliding guide body, and the feeding action of the harvested cereal stalks by the lateral feeding auger can be continued for a long period of time.

In the present invention, it is preferable that the insertion hole has a narrow portion formed at a radial middle portion thereof, the narrow portion having a narrow width as viewed in the axial direction.

According to this configuration, the rake body can be easily prevented from coming off the insertion hole and entering radially inward by forming the narrow portion in the radial middle portion of the insertion hole.

In the present invention, it is preferable that the narrower width portion is formed at a position radially outward of the stay.

According to this configuration, even when a strong reaction force due to harvesting straw acts on the raking body and bends, the raking body is bent from the narrow portion located radially outward of the stay, and therefore, compared with the case where the raking body is bent from the stay, the possibility that the raking body enters the radially inward side of the screw conveyor drum is small.

In the present invention, it is preferable that the slide guide body is fixed to the auger drum together with the stay by bolts attached from the radially outer side of the auger drum at each of portions located on both sides of the insertion hole in the circumferential direction of the auger drum; the radially inner end of the bolt and the radially inner end of the projection are disposed adjacent to each other.

According to this structure, the slide guide body is stably and firmly fixed by the bolts on both sides in the circumferential direction of the insertion hole. Since the bolts are attached in a state along the radial direction of the auger drum, the front and rear bolts are arranged so that the radially inner side end portions are close. The bolt and the projection are provided so as not to interfere with each other. As a result, the projecting length of the projecting portion can be increased to such an extent as not to interfere with the bolt, and the rake body can be easily prevented from entering radially inward.

In the present invention, it is preferable that a surrounding portion surrounding the protruding portion is formed in the stay; a rising portion extending in a radial direction is formed at a lateral end of the surrounding portion.

According to the present structure, in the case where the stay is attached from the inside of the auger drum, the stay is attached by the surrounding portion so as to surround the protruding portion of the slide guide body, and is attached to the auger drum with a bolt or the like.

In this case, the mounting operation can be performed by providing the rising portion formed at the lateral end of the surrounding portion. Since the rising portion extends in the radial direction, the holding operation is easy, and the work is easy.

In the present invention, it is preferable that the stay includes a flat plate portion bent in a circumferential direction of the auger roller; the rising portion is provided in one flat surface portion of the flat plate portion.

According to this configuration, the flat plate portion of the stay can be produced by bending the flat plate-like member in the circumferential direction. In this case, since the rising portion is formed in the one flat surface portion of the flat plate portion, the rising portion is provided in a state of being continuous with the one flat surface portion.

That is, by bending the sheet at the same time as the bending process, the rising portion can be formed without increasing the labor for the process.

[ 3 ] the solution corresponding to the problem [ 3 ] is as follows.

The present invention is characterized by comprising: a threshing device having a threshing section for threshing the harvested straw and a sorting section provided below the threshing section for sorting grains obtained by threshing the harvested straw by the threshing section; a secondary reducing device disposed in the lateral vicinity of the threshing device and reducing the secondary products sorted by the sorting section to the sorting section; an opening formed in a lateral side wall of the trough-removing part on the side where the secondary reduction device is located, through which the secondary material from the secondary reduction device passes; and a guide member connected to the conveying terminal portion of the secondary reducing device and the opening portion, for guiding the secondary material from the secondary reducing device toward the opening portion; the guide member is configured to be attachable to and detachable from the opening portion.

According to this characteristic configuration, the opening is exposed in the lateral direction of the threshing device by detaching the guide member from the opening. Thus, maintenance of the inside of the threshing unit can be performed from the opening in the lateral direction of the threshing device. That is, according to the present characteristic configuration, it is possible to realize a combine harvester capable of easily performing maintenance on the inside of the threshing portion.

Further, in the present invention, it is preferable that an engaging portion that engages with a portion of the lateral wall along an edge of the opening by being inserted into the edge of the opening is provided at the edge of the guide member.

According to this feature, the guide member can be easily attached and detached by inserting the locking portion into or removing the locking portion from the edge of the opening.

Further, in the present invention, it is preferable that a bent portion is formed at an edge portion of the guide member; the bent portion is detachably fastened by a fastener in a state of being in face-to-face engagement with the lateral side wall.

According to this characteristic configuration, the guide member can be firmly attached to the lateral side wall by fastening with the fastener in a state where the bent portion and the lateral side wall are in face-to-face engagement.

Further, in the present invention, it is preferable that a locking portion that is locked to a portion of the lateral wall along an upper edge portion of the opening portion by being inserted into the upper edge portion of the opening portion is provided at the upper edge portion of the guide member; a bent portion is formed at a lower edge portion of the guide member; the bent portion is detachably fastened by a fastener in a state of being in face-to-face engagement with the lateral side wall.

According to this feature, the guide member can be easily attached and detached by inserting the locking portion into or removing the locking portion from the edge of the opening. Further, by fastening with the fastener in a state where the bent portion and the lateral side wall are in face-to-face engagement, the threshing processed object can be prevented from leaking to the outside from between the lower edge portion of the guide member and the lateral side wall.

Further, in the present invention, it is preferable that the guide member is disposed in front of a conveyance end portion of the secondary reducing apparatus; the guide member has an inclined portion that is inclined so as to be closer to the lateral side wall as the guide member is closer to the front side in a plan view; bending parts are respectively formed at the front and rear edges of the inclined part; the front bent portion is detachably fastened by a fastener fastened in a direction perpendicular or substantially perpendicular to the lateral side wall; the bent portion on the rear side is detachably fastened by a fastener fastened in a direction parallel or substantially parallel to the lateral side wall.

According to this feature, the secondary matters from the secondary reducing device flow along the inclined portion.

This can guide the secondary material toward the center of the sorting unit so that the secondary material is not returned while being deflected toward one of the left and right sides of the sorting unit. The guide member is fastened by a fastener from two directions. Thus, even if the secondary material from the secondary reducing device collides with the guide member and the guide member is displaced in one direction, the guide member is less likely to be displaced.

Drawings

Fig. 1 is a view showing embodiment 1 (hereinafter, the same as fig. 8), and is a right side view of a combine harvester.

Fig. 2 is a top view of the combine.

Fig. 3 is a right side view of the harvesting portion.

Fig. 4 is a right side view of the right crop divider and the vicinity of the right bulging portion removed.

Fig. 5 is a perspective view of the vicinity of the crop divider on the right.

Fig. 6 is a top view of the harvesting portion.

Fig. 7 is a left side view of the divider on the right and the vicinity of the bulging portion on the right.

Fig. 8 is a right side view of the left crop divider and the vicinity of the left bulge.

Fig. 9 is a view showing embodiment 2 (hereinafter, the same applies to fig. 14), and is an overall side view of a general-type combine harvester.

Fig. 10 is a partial cross-sectional top view of the front of the combine.

FIG. 11 is a side elevation view in longitudinal section of a lateral feed screw conveyor.

FIG. 12 is a side elevation view, partially in longitudinal section, of a portion of a cross feed screw conveyor.

Fig. 13 is a perspective view of the slide guide and stay (stay).

FIG. 14 is a partial longitudinal cross sectional side view of other embodiments of the transverse feed auger.

Fig. 15 is a view showing embodiment 3 (hereinafter, the same applies to fig. 22), and is a left side view showing a combine harvester.

Fig. 16 is a plan view showing the combine harvester.

Fig. 17 is a left side view showing the inside of the threshing device.

Fig. 18 is a right side view showing the threshing device.

Fig. 19 is a partial sectional view in plan view showing the guide member.

Fig. 20 is a plan view showing the guide member.

Fig. 21 is an exploded right side view showing the guide member.

Fig. 22 is a rear view showing the guide member.

Detailed Description

[ 1 st embodiment ]

First, embodiment 1 will be described with reference to fig. 1 to 8.

Fig. 1 to 8 show a general-type combine harvester as an example of the harvester, and in fig. 1 to 8, F denotes a front, B denotes a rear, U denotes an upper side, D denotes a lower side, R denotes a right side, and L denotes a left side.

(Integrated structure of combine harvester)

As shown in fig. 1 and 2, the machine body 1 is supported by a right and left crawler type traveling device 2, a driving unit 3 is provided at the right part of the front part of the machine body 1, a threshing device 4 is provided at the left part of the rear part of the machine body 1, and a grain hopper 5 is provided at the right part of the rear part of the machine body 1.

The feeder 6 is connected to the front of the threshing device 4 and extends forward, the harvesting unit 7 is connected to the front of the feeder 6, and the harvesting unit 7 is provided with a raking reel 9, a cutting device 10, a screw conveyor 11, and a grain divider 12.

With the above configuration, the side wall 15 of the crop harvesting unit 7 and the crop divider 12 in the field are divided into a crop introduced into the harvesting unit 7 and a crop left in the field to be harvested in the next pass, and the crop introduced into the harvesting unit 7 is raked toward the cutting device 10 by the raking reel 9.

The crop raked by the raking drum 9 is cut by a cutting device 10, fed horizontally by a screw conveyor 11 toward an inlet of a front portion of the feeder 6, conveyed through the feeder 6, supplied to the threshing device 4, and the grains threshed by the threshing device 4 are put into the grain hopper 5.

(entire structure of reaping part)

As shown in fig. 3 and 6, the harvesting unit 7 is provided with a harvesting frame 8 serving as a framework of the harvesting unit 7. The harvesting frame 8 is provided with a bottom portion 13 formed in an arc shape in side view over the entire width of the harvesting portion 7 in the left-right direction, and a rear wall portion 14 is connected to the rear portion of the bottom portion 13.

The front portion of the feeder 6 is connected to the rear wall portion 14, and the harvesting portion 7 is connected to the front portion of the feeder 6.

A right side wall 15 is connected to the right portions of the bottom portion 13 and the rear wall portion 14, a left side wall 15 is connected to the left portions of the bottom portion 13 and the rear wall portion 14, and right and left side walls 15 are provided on the harvesting frame 8. The right and left dividers 12 are connected to the right and left side walls 15 so as to protrude forward of the cutting device 10.

(Structure of harrow roll)

As shown in fig. 3, the right and left support frames 17 are supported on the right and left rear portions of the harvesting unit 7 so as to be vertically swingable about the axis P2 along the left-right direction, and extend forward. The side walls 15 and the support frame 17 are provided with hydraulic cylinders 18 capable of vertically changing the positions of the right and left support frames 17.

Right and left support brackets 19 are attached to the front portions of the right and left support frames 17, and the support brackets 19 can be changed in position and fixed in the front-rear direction along the support frames 17. The drive shaft 20 is supported by the right and left support brackets 19 so as to be rotatable about the axis P3 in the left-right direction.

The roll frame 21 on the right and left sides of the pentagon in side view is coupled to the right and left portions of the drive shaft 20. The pentagonal drum frame 22 is supported by the right support bracket 19 so as to be rotatable about a right-left axis (not shown) located slightly behind the axis P3.

5 support shafts 23 extending in the left-right direction are rotatably attached to the top 5 portions of the roll frame 21 on the right and left sides, and a large number of rod-shaped tines (tine) 24 are connected to the support shafts 23. The link member 25 is coupled to the right end of the support shaft 23, and the link member 25 is rotatably coupled to the 5 top portions of the roll frame 22.

A belt 27 is mounted across an input pulley 20a connected to the right end of the drive shaft 20 and a drive pulley 26 disposed at the position of the shaft core P2, and a tension pulley 28 for maintaining the tension of the belt 27 is provided on the right support frame 17.

With the above configuration, the power of the drive pulley 26 is transmitted to the input pulley 20a of the drive shaft 20 via the transmission belt 27, the drive shaft 20 is rotationally driven in the clockwise direction in fig. 3, and the right and left spool frames 21 are rotationally driven integrally with the drive shaft 20.

By rotating the drum frame 22 together with the drum frame 21, the tines 24 are always maintained in the downward posture shown in fig. 3 by the link member 25 and the 5 top portions of the drum frame 22, and the crops in the field are raked toward the cutting device 10 by the support shaft 23 and the tines 24.

In the configuration in which the support bracket 19 is positionally changed in the front-rear direction along the support frame 17 and the raking reel 9 is positionally changed in the front-rear direction, when the tip end portion of the rotation locus of the support shaft 23 is set as the tip end portion of the outer peripheral portion of the raking reel 9 in a side view, a positional relationship with the tip end portion 34c of the grain divider 12 (the body portion 34) (see (the structure of the grain divider) described later) will be described below.

As shown in fig. 3, the position of the rake reel 9 can be changed to the front side until the foremost end of the outer peripheral portion of the rake reel 9 is located at the foremost position A1 located on the front side of the front end 34c of the grain divider 12 (main body portion 34) in side view.

The position of the raking reel 9 can be changed to the rear side until the foremost end of the outer peripheral portion of the raking reel 9 is located at the rearmost position A2 located on the rear side of the front end 34c of the grain divider 12 (main body portion 34) in side view.

(Structure of cutting device)

As shown in fig. 3 and 6, the support member 16, which is formed in an angular shape in a side view, is connected to the front portion of the bottom portion 13 and provided over the entire width of the reaping portion 7 in the left-right direction.

The cutting device 10 is connected to the support member 16, and is provided on the harvesting frame 8 so as to be positioned between the right and left side walls 15. The cutting device 10 includes a plurality of fixed blades and a movable blade reciprocally driven in the left-right direction along the fixed blades, and is provided over the entire width of the harvesting section 7 in the left-right direction.

With the above configuration, if the crop raking reel 9 in the field is raked toward the cutting device 10 as described above (the raking reel configuration), the roots of the crop are cut by the cutting device 10.

(Structure of screw conveyor)

As shown in fig. 2, 6, 7, and 8, the screw conveyor 11 includes a cylindrical main body 11a, right and left screws 11b connected to the outer periphery of the main body 11a, and a rod-shaped raking portion 11c disposed between the right and left screws 11 b. The screw conveyor 11 is supported across the right and left side walls 15 so as to be rotatable about the axial center P1 in the left-right direction, and is rotationally driven in the counterclockwise direction in fig. 7.

With the above configuration, as described above (configuration of cutting device), the crop cut by the cutting device 10 is fed to the screw conveyor 11. The crop fed to the screw conveyor 11 is fed laterally by the screw 11b of the screw conveyor 11 toward the entrance of the front part of the feeder 6, and is fed by the raking part 11c of the screw conveyor 11 toward the entrance of the feeder 6.

(construction of side wall of reaping part)

As shown in fig. 3, 5, 7, and 8, in the right and left side walls 15 connected to the right and left portions of the bottom portion 13 and the rear wall portion 14, a frame 29 having a square tube shape is connected to the upper portion of the side wall 15 along the front-rear direction.

The frame 30 along the vertical direction is coupled to an outer portion of the right side wall 15, the driving shaft 31 is supported by the frame 30 along the front-rear direction, and an arm portion 31a coupled to a distal end portion of the driving shaft 31 is connected to the cutting device 10. The movable blade of the cutting device 10 is reciprocally driven in the left-right direction by the arm portion 31a of the drive shaft 31 by reciprocally rotating the drive shaft 31 around its own axis in the front-rear direction.

The right and left front surface portions 32 are connected to the front portions of the right and left side walls 15 in the vertical direction, and the front surface portions 32 have a predetermined lateral width in the horizontal direction.

The right and left bottom portions 33 are connected to lower portions of front portions of the right and left side walls 15 in the front-rear direction, and the bottom portions 33 have the same lateral width as the front surface portion 32 in the left-right direction. The bottom surface portion 33 is disposed below the cutting apparatus 10 in side view, and is a flat bottom surface provided in a portion of the side wall 15 adjacent to the cutting apparatus 10.

The right and left inclined surfaces 40 are connected to the lower portions of the front portions of the right and left side walls 15 across the lower end portions of the front surface portion 32 and the front end portions of the bottom surface portion 33, and the inclined surfaces 40 have the same lateral width as the front surface portion 32 and the bottom surface portion 33 in the right and left direction.

(Structure of divider)

As shown in fig. 3, 4, and 5, the right and left grain dividers 12 connecting the right and left side walls 15 are provided with a flat plate-shaped main body portion 34, an upper surface portion 35 connecting to an upper portion of the main body portion 34 in the front-rear direction, a rear surface portion 36 connecting to a rear portion of the main body portion 34 in the up-down direction, a guide portion 37 connecting to an outer side portion of the main body portion 34, and the like. The right and left crop dividers 12 have a left-right symmetrical shape except for the shape of the upper portion of the rear surface portion 36.

The lower portion of the main body portion 34 is formed in a rear-falling inclined shape. A front lower portion 34a, which is a portion on the front side of the bulging portion 43 described later (a structure of the bulging portion), and a rear lower portion 34b, which is located on the rear side with respect to the front lower portion 34a, are provided at the lower portion of the main body portion 34, and the inclination angle of the front lower portion 34a of the main body portion 34 is set larger than the inclination angle of the rear lower portion 34b of the main body portion 34.

A protective member 38 formed by bending a round bar is connected to a portion slightly above the front end portion 34c of the body 34 and a rear end portion 34d of the front lower portion 34a of the body 34.

In the outer side portion of the body portion 34, the front end portion of the guide portion 37 is connected to the vicinity of the rear end portion 34d of the front lower portion 34a of the body portion 34, and the guide portion 37 extends rearward to the position of the rear surface portion 36. The main body 34 and the guide 37 are connected to a support stay 39.

The upper surface portion 35 has a lateral width gradually increasing in the left-right direction from the front end portion 34c of the body portion 34 toward the rear side, and the lateral width of the rear portion of the upper surface portion 35 is the same as the lateral width of the frame 29.

The upper end 36a of the rear surface 36 is bent rearward and extends rearward. In the right crop divider 12, a notch 36b is formed in an upper portion of the rear surface portion 36, and a lateral width of an upper end portion 36a of the rear surface portion 36 is equal to a lateral width of a rear portion of the upper surface portion 35 and a lateral width of the frame 29.

With the above configuration, the rear surface portion 36 of the grain divider 12 is coupled to the front surface portion 32 of the side wall 15 by the bolt 41, the upper end portion 36a of the rear surface portion 36 of the grain divider 12 is coupled to the frame 29 of the side wall 15 by the bolt 42, and the right and left grain dividers 12 are coupled to the right and left side walls 15.

As shown in fig. 4 and 7, when an imaginary line B1 including the bottom surface portion 33 of the side wall 15 on the right and left sides in side view is set, the rear lower portion 34B of the divider 12 (main body portion 34) on the right and left sides is positioned on the imaginary line B1 in a state where the divider 12 on the right and left sides is connected to the side wall 15.

As shown in fig. 4 and 5, the front surface portion 32 of the right side wall 15 is provided with an inclined portion 32a at a portion corresponding to the notch portion 36b of the rear surface portion 36 of the right crop divider 12.

As described above (the structure of the raking reel), when the raking reel 9 is operated to the lowermost position, the belt 27 is positioned in the vicinity of the inclined portion 32a of the front surface portion 32 of the right side wall 15 and the notched portion 36b of the rear surface portion 36 of the right divider 12, and the belt 27 is prevented from contacting the front surface portion 32 of the right side wall 15 and the rear surface portion 36 of the right divider 12.

(Structure of bulge)

As shown in fig. 4, 7, and 8, right and left bulging portions 43 are attached to the inner surface of the lower portion of the right and left crop dividers 12.

The bulging portion 43 is formed of a flat plate-like plate material, and a lower portion of the bulging portion 43 is formed in an inverted triangle shape in side view. A protective member 44 formed by bending a round bar is connected to the front end 43a and the rear end 43b of the bulging portion 43 and to the top portion 43c between the front end 43a and the rear end 43 b. A coupling hole 43d is opened along the upper portion of the bulging portion 43.

A portion between the front end portion 43a and the top portion 43c of the bulging portion 43 (corresponding to the bottom portion of the front portion of the bulging portion 43) is formed in an inclined shape that falls rearward.

In side view, the length L1 in the front-rear direction across the top portion 43c of the bulging portion 43 and the rear end portion 43b of the bulging portion 43 is set longer than the length L2 in the front-rear direction across the top portion 43c of the bulging portion 43 and the front end portion 43a of the bulging portion 43.

(state in which the bulging part is attached to the crop divider)

As shown in fig. 4, the right and left side walls 15 have coupling holes 15a formed in portions slightly above the inclined surface portions 40. The body portion 34 of the right and left crop dividers 12 has a coupling hole 34f formed in a portion slightly above the rear lower portion 34 b.

As shown in fig. 3, 4, 7, and 8, the right and left bulging portions 43 are abutted against the inner surfaces of the grain divider 12 and the side wall 15, the bolts 45 are inserted and tightened across the coupling holes 43d of the bulging portions 43, the coupling holes 15a of the side wall 15, and the coupling holes 34f of the grain divider 12 (main body portion 34), and the bulging portions 43 are coupled to the lower portion of the grain divider 12. By removing the bolt 45, the bulging portion 43 can be removed from the crop divider 12.

As shown in fig. 7, in a state where the right and left bulging portions 43 are connected to the lower portion of the crop divider 12, the bulging portions 43 bulge downward from the virtual line B1 in a side view, and the portions of the bulging portions 43 bulge downward from the virtual line B1 are formed in an inverted triangle.

The bulging portion 43 extends from the lower portion of the crop divider 12 to the bottom surface portion 33 of the side wall 15 along the lower portion of the side wall 15 in side view, and a rear end portion 43b of the bulging portion 43 is located at the same position as the front end portion of the bottom surface portion 33 of the side wall 15.

The front end 43a of the bulging portion 43 and the rear end 34d of the front lower portion 34a of the crop divider 12 (the main body portion 34) (corresponding to the rear end of the portion of the lower portion of the crop divider that is forward of the bulging portion) are located at the same position and smoothly continue.

The portion between the front end portion 43a and the top portion 43c of the bulging portion 43 is formed into a rearwardly-descending inclined shape, the front lower portion 34a of the seedling divider 12 (the main body portion 34) is formed into a rearwardly-descending inclined shape, and the portion between the front end portion 43a and the top portion 43c of the bulging portion 43 and the front lower portion 34a of the seedling divider 12 (the main body portion 34) are formed into a rearwardly-descending straight inclined shape.

When the bolts 45 are removed and the right and left bulging portions 43 are removed from the crop divider 12, the rear lower portion 34B of the crop divider 12 (the main body portion 34) is positioned on the imaginary line B1 as described above (the structure of the crop divider) and shown in fig. 4.

(Structure of guide part on right and left sides)

As shown in fig. 6, 7, and 8, the right and left crop dividers 12 are provided with right and left guide portions 46 and 47 on the inner surfaces in the cutting width direction thereof, which guide the crop in the field toward the left and right center portions of the cutting frame 8.

The right and left guide portions 46, 47 are formed of circular pipes. The front end portions 46a, 47a of the right and left guide portions 46, 47 are connected to the crop divider 12 (the main body portion 34) together with the bulging portion 43 by the bolt 45 at a position corresponding to the top portion 43c of the bulging portion 43, and the right and left guide portions 46, 47 extend rearward along the inner surface of the crop divider 12 from a position corresponding to the top portion 43c of the bulging portion 43.

The support stays 46c and 47c are coupled to the right and left guide portions 46 and 47, and the support stays 46c and 47c of the right and left guide portions 46 and 47 are coupled to the side wall 15 together with the bulging portion 43 by bolts 45.

As shown in fig. 7, the rear half of the right guide portion 46 extends slightly obliquely upward in side view with respect to the front half of the right guide portion 46, and the rear end portion 46b of the right guide portion 46 extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor 11 (screw portion 11 b) and the cutting device 10 in side view.

As shown in fig. 8, the left guide portion 47 extends rearward in a straight line shape, and a rear end portion 47b of the left guide portion 47 extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor 11 (the screw portion 11 b) and the cutting device 10 in a side view.

(Structure of other guide portions on the right and left sides)

As shown in fig. 6, 7, and 8, the right and left dividers 12 are provided on the inner surfaces in the harvesting width direction with right and left other guide portions 48 and 49 for guiding the crop in the field toward the left and right center portions of the harvesting frame 8.

The other guides 48, 49 on the right and left are formed by circular pipes. As shown in fig. 6 and 7, the distal end portion 48a of the other right guide portion 48 is coupled to the side wall 15 together with the bulging portion 43 by a bolt 45 so as to be positioned more rearward than the distal end portion 46a of the right guide portion 46 and more upward than the right guide portion 46 in a side view.

The other right guide portion 48 is disposed between the right guide portion 46 and the right side wall 15 (bulging portion 43) in a plan view, and extends obliquely rearward and downward so as to intersect the right guide portion 46 in a side view. The rear end portion 48b of the other guide portion 48 on the right is located below the guide portion 46 on the right in side view and in the vicinity of the cutting device 10.

As shown in fig. 6 and 8, the distal end portion 49a of the other guide portion 49 on the left is connected to the side wall 15 together with the bulging portion 43 by the bolt 45 so as to be positioned more rearward than the distal end portion 47a of the guide portion 47 on the left and more upward than the guide portion 46 on the left in a side view.

The other left guide portion 49 extends rearward along the left guide portion 47 at a position above the left guide portion 47 in a side view, and intersects with the left guide portion 47 in a plan view. The rear end portion 49b of the other guide portion 49 on the left is located on the upper side with respect to the guide portion 47 on the left in a side view, and extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor 11 (screw portion 11 b) and the cutting device 10.

[ other modes for carrying out the embodiment 1 ]

(1) The bulging portion 43 may be formed in a downwardly convex shape bulging downward below the virtual line B1 at a portion forward of the bottom surface portion 33 of the side wall 15, instead of being formed in an inverted triangle.

According to this structure, the bulging portion 43 is connected to the crop divider 12 and is not connected to the side wall 15.

(2) The right and left bulging portions 43 may have different shapes.

For example, the right bulging portion 43 may be formed in the shape shown in fig. 4 and 7, and the left bulging portion 43 may be formed in the shape shown in (1) of the [ other embodiment of the 1 st embodiment ] described above. Conversely, the left bulging portion 43 may be formed in the shape shown in fig. 4 and 7, and the right bulging portion 43 may be formed in the shape shown in (1) of the [ other embodiment of the 1 st embodiment ] described above.

(3) The right and left bulging portions 43 may be provided with the left bulging portion 43 and not with the right bulging portion 43. The right bulging portion 43 may be provided, and the left bulging portion 43 may not be provided.

(4) As shown in fig. 7 and 8, when the front end portion 43a of the bulging portion 43 and the rear end portion 34d of the front lower portion 34a of the crop divider 12 (the main body portion 34) are located at the same position, the inclination angle of the portion between the front end portion 43a and the top portion 43c of the bulging portion 43 may be set to a slightly larger angle or a slightly smaller angle with respect to the inclination angle of the front lower portion 34a of the crop divider 12 (the main body portion 34).

According to this configuration, the portion between the front end portion 43a and the top portion 43c of the bulging portion 43 and the front lower portion 34a of the crop divider 12 (the main body portion 34) are not straight and are in a slightly bent state.

(5) The other guide 48 on the right side may be provided among the other guide 48 and 49 on the right and left sides, and the other guide 49 on the left side may not be provided. The other guide portion 49 on the left side may be provided, and the other guide portion 48 on the right side may not be provided. The other guide portions 48 and 49 on the right and left sides may not be provided.

(6) The invention is applicable not only to ordinary combine harvesters but also to harvesters such as corn harvesters.

[ 2 nd embodiment ]

Next, embodiment 2 will be described with reference to fig. 9 to 14.

Hereinafter, a case where an embodiment of a harvester according to the present invention is applied to a general-type combine harvester as an example of the harvester will be described with reference to the drawings. In this embodiment, when the front-rear direction of the machine body is defined, the direction is defined along the machine body in the working state. That is, the direction indicated by reference numeral (F) in fig. 9 is the body front side, and the direction indicated by reference numeral (B) in fig. 9 is the body rear side.

As shown in fig. 9, the combine harvester is provided with a traveling machine body 202 having a pair of left and right crawler traveling devices 201, a threshing device 203 of an axial flow type and a grain tank 204 for storing grains, which are arranged in parallel on the left and right sides, and a steering unit 205 provided in front of the grain tank 204. A feeder 206 for transporting harvested straws is connected to the front of the threshing device 203 so as to be vertically swingable around a horizontal axis P12, and a harvesting unit 207 having a harvesting width substantially corresponding to the lateral width of the machine body is connected to the front end of the feeder 206. A rotary drum 208 for raking the planted crop backward is provided above the front part of the harvesting section 207. A grain discharging device 209 for discharging grains stored in the grain tank 204 to the outside is provided at the rear of the body. An engine 210 is provided below the cab 205, and power of the engine 210 is transmitted to each part of the machine body, so that harvesting work can be performed while the machine body is traveling.

As shown in fig. 9, 10, and 11, the harvesting unit 207 constitutes the following frame assembly structure: a back plate 213 forming a back surface, a conveying table 214 forming a bottom surface, and a pair of left and right side plates 215, 216 forming left and right side surfaces are connected and fixed to a reaping part shelf 212 formed by connecting an angular pipe, an angular member having an L-shaped cross section, or the like. A pusher-type harvesting device 217 is provided along the front end of the conveying floor 214 across the left and right side plates 215, 216, and a transverse feed screw 218 is provided across the left and right side plates 215, 216, the transverse feed screw 218 gathering and conveying harvested grain stalks toward the widthwise middle side of the machine body.

The feeder 206 is configured by installing a pull-up conveyor 220 inside a conveyance box 219 formed in a substantially rectangular tubular shape. The top-collecting conveyor 220 includes a driving rotor 221 that rotates around a horizontal axis, a driven rotor 222, a pair of left and right conveyor chains 223 wound up across these rotors, and a plurality of conveyor bars 224 connected across these left and right conveyor chains 223, and collects and conveys the crop that is delivered by being laterally fed by the lateral feed auger 218 along the bottom surface of the conveyor box 219, and drops the crop onto the front end of the threshing device 203.

A hydraulic cylinder C2 is provided between the front portion of the body frame 225 of the travel body 202 and the lower portion of the feeder 206. The harvesting unit 207 is configured such that the harvesting unit 207 can be swung up and down around the horizontal axis P12 integrally with the feeder 206 by the telescopic operation of the hydraulic cylinder C2.

The lateral feed auger 218 is illustrated.

The lateral feed screw 218 includes: a cylindrical auger roller 227 provided with a helical blade 226 for transporting grain stalks on the outer peripheral portion thereof and rotating around the horizontal axis core; the raker 228 rotates integrally with the rotation of the auger roller 227 while protruding and retracting from the auger roller 227, and feeds the harvested straw to the feeder 206. That is, as shown in fig. 10 and 11, a pair of right and left screw blades 226 that perform a lateral feed function toward the tip end portion of the feeder 206 as they rotate are provided on the outer periphery of the large-diameter screw conveyor drum 227, and 2 round bar-shaped rake bodies 228 that protrude and retreat from the screw conveyor drum 227 are provided on the right and left sides, respectively, at 4 locations in the circumferential direction in a lateral width region facing the tip entrance 206a of the feeder 206. Further, 1 raker 228 protruding and retreating from the auger roller 227 is also provided at an intermediate position in the right lateral feed area.

As shown in fig. 10, cover plates 229, 230 are fixedly provided inside the vicinity of the left and right ends of the auger roller 227, and a pair of intermediate support plates 231, 232 are fixedly provided inside the auger roller 227 with a space therebetween. The rotation shaft 233 is supported by the right cover plate 230 and the right intermediate support plate 232, and the connection flange 234 that is keyed to the rotation shaft 233 is bolted to the right cover plate 229, whereby the rotation shaft 233 and the auger roller 227 are integrally connected.

A fixed support shaft 235 is coupled and fixed to the left side plate 215 coaxially with the rotary support shaft 233, and the fixed support shaft 235 is configured to rotatably support the left cover plate 229 of the auger roller 227 by being externally fitted via a bearing 237.

The eccentric support shaft 236 is provided in a state of being rotationally fixed to the fixed support shaft 235 by key coupling, and the rake body 228 is rotatably attached to an outer peripheral portion of the eccentric support shaft 236 via a mounting sleeve 238 around the shaft center P32 along the fixed support shaft 235. Each of the raker bodies 228 is configured such that a slide guide body 239 provided to the auger roller 227 is slidably guided so as to protrude from and retreat from the auger roller 227. The eccentric support shafts 236 are provided in a pair of left and right sides, and the left and right eccentric support shafts 236 are coupled by a relay shaft 240, and the relay shaft 240 is rotatably supported by the right intermediate support plate 231.

If the rotary support shaft 233 is driven to rotate and the auger roller 227 rotates counterclockwise about the axial center P32 of the rotary support shaft 233, the raking bodies 228 follow and rotate about the axial center P42 of the eccentric support shaft 236, and at this time, the distance between the eccentric support shaft 236 and the slide guide body 239 changes depending on the rotational phase, and the raking bodies 228 rotate while protruding and retracting from the auger roller 227, so that the crop can be raked toward the feeder 206 while avoiding interference with the conveying surface 214 and the back plate 213.

Although not shown, an assembly hole, which is opened to a large extent for assembling or disassembling the raking body 228 and the like, is formed in a portion of the auger roller 227 corresponding to the attaching position of the raking body 228, and the assembly hole is closed by a detachable cover. The cover is removably mounted to the auger drum 227 with a plurality of bolts.

Next, the slide guide 239 will be described.

The slide guide 239 is integrally formed of a synthetic resin material. As shown in fig. 11, 12, and 13, the slide guide 239 is formed to have a narrow width in the axial direction of the auger roller 227 and a wide width in the circumferential direction, and is formed to have a long shape in the circumferential direction. The slide guide body 239 is provided at a position corresponding to the opening 246 formed in the auger roller 227.

The slide guide 239 has an insertion hole 247 through which the rake 228 inserts the auger roller 227 in the radial direction. The slide guide body 239 is fixed to the auger drum 227 with bolts 248 attached from the radially outer side of the auger drum 227 together with stays 249 provided on the inner side of the auger drum 227 at each of the portions located on both sides of the insertion hole 247 in the circumferential direction of the auger drum 227. In the state where the radially outer portion of the slide guide 239 abuts against the inner circumferential surface of the auger drum 227, the slide guide 239 is fixed by fastening the bolt 248 and the nut 250 welded to the stay 249 in a state where the stay 249 and the auger drum 227 are sandwiched between the stay 249 abutting from the radially inner side.

The fastening bolt 248 is attached so as to insert the auger roller 227 in the radial direction with the bolt head 248a positioned on the outer peripheral side of the auger roller 227. Further, between the bolt head 248a and the outer peripheral surface of the auger roller 227, a flat washer 251 abutting against the outer peripheral surface of the auger roller 227 and a spring washer 252 positioned between the flat washer 251 and the bolt head 248a are fitted to the shaft portion of the bolt 248.

The flat washer 251 abutting against the outer peripheral surface of the auger roller 227 is constituted by a wood washer having a large area of a flat surface portion so that even wood is not buried by screwing of the bolt 248. By using such a washer, the contact area with the outer peripheral surface of the auger roller 227 becomes large, and even when the pressing force of the bolt 248 is applied, it is possible to avoid, for example, the corner of the washer coming into contact with the outer peripheral surface of the auger roller 227 from being damaged by a local load.

The region of the radially outer side surface of the slide guide 239 other than the insertion hole forming portion 253 forming the insertion hole 247 is formed as a smooth arc surface along the inner circumferential surface of the auger roller 227. A circular convex portion 254 that fits into the circular opening 246 formed in the auger roller 227 is formed in a portion of the radially outer side surface that corresponds to the insertion hole forming portion 253. The projection 254 is not projected outward in the radial direction from the auger roller 227 in a state of being fitted to the opening 246 of the auger roller 227 by a small projection amount. As a result, the slide guide 239 does not protrude radially outward from the outer circumferential surface of the auger roller 227, so there is less possibility of catching up shavings or the like, and the projection 254 is fitted into the opening 246, thereby preventing positional displacement in the circumferential direction with respect to the auger roller 227.

Bolt insertion holes 255 through which the bolts 248 are inserted are formed in radially penetrating positions on both sides of the insertion hole forming portion 253 of the slide guide 239 in the circumferential direction. The region other than the insertion hole forming portion 253 in the radially inner side surface of the slide guide 239 is formed as an arc surface along the inner circumferential surface of the auger roller 227. In this region, a fitting portion 256 into which the stay 249 fits is formed in a recessed state inward. The stay 249 is fitted into the fitting portion 256, whereby the stay 249 can be positioned with respect to the slide guide 239. As a result, the bolt 248 can be easily attached from the radially outer side of the auger drum 227 in a state where the stay 249 is fitted into the fitting portion 256.

A protrusion 257 that protrudes radially inward of the auger roller 227 from the stay 249 is provided on the radially inward side of the insertion hole forming portion 253 of the slide guide 239. The protruding portion 257 is substantially cylindrical, and has a shape that largely protrudes toward the radially inner side so as to have substantially the same width as the width in the radial direction of the region of the slide guide body 239 other than the insertion hole forming portion 253. That is, the insertion hole forming portion 253 largely protrudes so that the width in the radial direction of the insertion hole forming portion 253 becomes approximately 2 times the width in the radial direction of the region other than the insertion hole forming portion 253.

Incidentally, it is also conceivable that the region of the slide guide 239 other than the insertion hole forming portion 253 is configured to have a wide width in the same manner as the projecting portion 257, but in such a configuration, the fastening state may become loose with use due to a longer coupling distance of the bolt 248, and a good working state may not be continued.

The auger roller 227 is formed in a cylindrical shape, and as shown in fig. 12, the connecting bolts 248 on both sides are inclined so that the radially inner side end portions approach each other. Further, a radially inner side end portion of the bolt 248 and a radially inner side end portion of the protruding portion 257 are provided in an adjacent state. With this configuration, the protruding portion 257 can protrude inward as much as possible without changing the interval between the bolts 248 on both sides, and the insertion hole 247 suitable for sliding guide can be formed.

The insertion hole 247 formed in the slide guide body 239 is formed with a narrow width portion 258 having a narrow width as viewed in the transverse axial core direction at a middle portion in the radial direction. The narrow width portion 258 is formed radially outward of the stay 249. The radially outward side of the narrower portion 258 is formed such that the width along the circumferential direction increases toward the outer side as viewed in the axial direction. The radially inward side of the narrower portion 258 is formed such that the width along the circumferential direction increases toward the inward side as viewed in the axial direction. The width of the insertion hole 247 in the direction along the rotation axis of the auger roller 227 is substantially the same over all regions, and is set to a width slightly larger than the outer dimension of the rake body 228. With this configuration, it is possible to allow a relative change in posture in the circumferential direction while restricting a change in posture of the raking body 228 in the axial direction.

Next, the stay 249 will be described.

As shown in fig. 13, the stay 249 includes a flat plate portion 259 bent in the circumferential direction of the auger roller 227, and 2 nuts 250 for connection in a state welded to the flat plate portion 259. The flat plate portion 259 includes 3 flat surface portions 259A, 259B, 259C that are curved substantially along the circumferential direction of the auger roller 227. Nut 250 is welded to the inner side of flat portions 259A, 259C located on both sides in the circumferential direction, of 3 flat portions 259A, 259B, 259C. Of 3 flat surface portions 259A, 259B, and 259C, one flat surface portion 259B located at the center in the circumferential direction is formed with a standing portion 260 extending in the radial direction.

When the flat plate 259 is formed by bending a flat plate, the 3 flat surfaces 259A, 259B, 259C and the upright portion 260 can be formed at one stroke without increasing the amount of work.

In the stay 249, an enclosing portion 261 is formed to enclose the protruding portion 257 of the slide guide 239, and a rising portion 260 extending in the radial direction is formed at an end portion of the enclosing portion 261 in the horizontal axial core direction. That is, circular opening 262 having a large diameter is formed so as to extend from center planar portion 59B to both side planar portions 259A and 259C among 3 planar portions 259A, 259B and 259C. The stay 249 is attached to the inner peripheral side of the slide guide body 239 in a state where the cylindrical protruding portion 257 of the slide guide body 239 inserts the opening 262 therethrough. Surrounding portion 261 is formed around opening 262, and both end portions in the axial direction of one flat portion 259B located at the center in the circumferential direction are bent substantially in an L shape to form rising portion 260.

Since rising portion 260 is provided in a posture perpendicular to flat portion 259B of flat plate portion 259, the pinching operation by the fingers is easy. Therefore, when the slide guide 239 is assembled to the auger roller 227, the stay 249 can be easily supported while the right and left upright portions 260 are held by hand.

[ other modes for carrying out the invention in embodiment 2 ]

(1) In the above embodiment, the slide guide body 239 is provided on the inner peripheral side of the auger roller 227, but instead of this, for example, as shown in fig. 14, the slide guide body 239 may be provided on the inner peripheral side of the auger roller 227. In this embodiment, a slide guide 239 is provided on the outer peripheral side of the auger roller 227, and a stay 249 having the same structure as that of the above-described embodiment is provided on the inner peripheral side of the auger roller 227. Then, the slide guide 239 is fixed by fastening a bolt 248 attached from the outer side of the auger roller 227 to a nut 250 welded to the stay 249. The protrusion 257 of the slide guide 239 protrudes radially inward of the auger roller 227 beyond the stay 249 through the opening 246 formed in the auger roller 227.

(2) In the above embodiment, the narrow width portion 258 is formed at the middle portion in the radial direction of the insertion hole 247, and the narrow width portion 258 is formed at the position radially outward of the stay 249, but instead of this configuration, the narrow width portion 258 may be formed at the same position as the stay 249 or at the position radially inward of the stay 249. In addition, the insertion holes may be formed to have the same diameter in the radial direction without providing such a narrow width portion, or the inner end portion or the outer end portion may be formed to have the smallest diameter.

(3) In the above embodiment, the rising portions are provided at both side ends in the axial direction of one flat surface portion of the flat plate portion of the stay 249, but instead of this configuration, the rising portions may be provided across a plurality of flat surface portions, or the rising portions may be provided at one end in the axial direction. Further, the rising portion 260 may not be formed.

(4) In the above-described embodiment, the example of application to a general-type combine harvester is shown as an example of a harvester, but the harvester may be another type of harvester such as a corn harvester.

(5) The invention can be applied to the harvesters such as a common combine harvester, a corn harvester and the like which gather the harvested crops in the transverse width direction of the machine body by means of transversely feeding the harvested crops to the screw conveyor and then convey the gathered crops to the rear side.

[ 3 rd embodiment ]

Next, embodiment 3 will be described with reference to fig. 15 to 22.

A mode for carrying out the present invention will be described based on the drawings. In the following description, the direction of arrow F is referred to as "front side of the body", the direction of arrow B is referred to as "rear side of the body", the direction of arrow L is referred to as "left side of the body", and the direction of arrow R is referred to as "right side of the body".

[ integral structure of combine harvester ]

Fig. 15 and 16 show a whole stalk input type combine harvester (corresponding to the "combine harvester" according to the present invention). The combine includes a traveling machine body 301. Traveling machine body 301 includes a machine body frame 302 and a crawler traveling device 303. A harvesting part 304 for harvesting the planted straw is provided in front of the traveling machine body 301. The harvesting unit 304 includes a raking drum 305 for raking the planted straw, a harvesting knife 306 for cutting the planted straw, and a raking screw 307 for raking the harvested straw.

A threshing device 308 for threshing the whole stalks of the harvested stalks is provided. Across the harvesting section 304 and the threshing device 308, a feeder 309 is provided which conveys the harvested straw towards the threshing device 308. A grain tank 310 for storing grains obtained by the threshing process is provided on the right side of the threshing device 308 so as to be arranged in the lateral direction of the threshing device 308. The grain tank 310 is configured to be swingable around a swing axis Z13 extending in the vertical direction. A grain discharging device 311 is provided to discharge the grains in the grain tank 310. A driver D3 is provided in front of the grain tank 310.

[ threshing device ]

As shown in fig. 17 and 18, the threshing device 308 includes: a threshing part 312 for threshing the harvested straws; and a sorting unit 313 provided below the threshing unit 312, for sorting grains obtained by threshing the harvested straws in the threshing unit 312. The threshing unit 312 includes a threshing cylinder 314 rotatable about a rotation axis Y13 extending in the front-rear direction of the machine body, a threshing chamber 315 in which the threshing cylinder 314 is provided, and a receiving net 316 through which the threshing processed object is dropped.

The sorting unit 313 includes an oscillating sorting device 317 for oscillating and sorting the threshing processed product, a wind turbine 318 for supplying a sorting wind to the threshing processed product, a primary recovery unit 319 for recovering a primary product (e.g., a grain having a single grain), and a secondary recovery unit 320 for recovering a secondary product (e.g., a grain having a branch). The primary recovery unit 319 includes a primary horizontal screw 321 that conveys the primary object to the right. The secondary recovery unit 320 includes a secondary transverse screw 322 that conveys the secondary object rightward.

A primary vertical conveying device 323 for conveying the primary products sorted by the sorting unit 313 toward the grain tank 310 and a secondary reducing device 324 for reducing the secondary products sorted by the sorting unit 313 toward the sorting unit 313 are provided in the lateral vicinity (right vicinity) of the threshing device 308. The primary objects from the primary transverse screw 321 are transported upward by the primary vertical transport device 323 and stored in the grain tank 310. The secondary material from the secondary horizontal screw 322 is conveyed upward by the secondary reducing device 324, discharged from the conveyance end portion of the secondary reducing device 324, and reduced to the front portion of the swing sorting device 317.

A right side wall 325 (corresponding to a "lateral wall" according to the present invention), an upper frame 326, a lower frame 327, and a vertical frame 328 are provided on a right side portion of the valley portion 312. The upper edge portion of the right side wall 325 is supported by the upper frame 326. The lower edge portion of right sidewall 325 is supported by lower frame 327. The vertical frame 328 extends in the vertical direction across the upper edge portion of the right side wall 325 and the lower edge portion of the right side wall 325.

An opening 325a through which the secondary material from the secondary reducing device 324 passes is formed in a lateral wall (right wall 325) of the valley portion 312 on the side where the secondary reducing device 324 is located. The opening 325a is formed in a substantially rectangular shape (specifically, a rectangular shape long in the front-rear direction) in side view, and overlaps with the primary vertical transport device 323.

As shown in fig. 17 to 19, a guide member 329 for guiding the secondary material from the secondary reducing device 324 to the opening 325a is provided. The guide member 329 is connected to the conveyance end portion of the secondary reducing device 324 and the opening 325a. The guide member 329 is disposed in front of the conveyance tail end portion of the secondary reducing device 324 in a state of overlapping the primary vertical conveyance device 323 in a side view.

Between the conveyance end portion of the secondary reducing apparatus 324 and the guide member 329, a vertical wall 330 is provided. The vertical wall 330 extends in the vertical direction across the upper edge of the right side wall 325 and the lower edge of the right side wall 325. Vertical wall 330 is supported by right side wall 325 in a state of protruding rightward from right side wall 325. The vertical wall 330 is formed with an opening 330a (see fig. 22) for connecting the terminal end of the secondary reducing device 324 to the inside of the guide member 329. The conveyance terminal portion of the secondary reducing device 324 and the inside of the guide member 329 are connected to each other through the opening 330 a. The vertical wall 330 has bent portions 330b formed at the left, right, and lower edges thereof.

[ guide member ]

As shown in fig. 20 to 22, the guide member 329 is formed in a shape that protrudes further to the lateral side (right side) of the valley portion 312 than the right side wall 325 and is opened rearward. The guide member 329 is formed in the above-described shape by bending one plate-like member. The guide member 329 has a rear end opening, and a portion other than the portion corresponding to the opening 330a is closed by the vertical wall 330. The guide member 329 is configured to be attachable to and detachable from the right side wall 325 and the vertical wall 330. That is, the guide member 329 is configured to be detachable from the opening 325a.

The guide member 329 has an upper surface portion 331, a first inclined portion 332 (corresponding to the "inclined portion" according to the present invention), and a second inclined portion 333. The first inclined portion 332 is inclined so as to be closer to the right side wall 325 as the front side becomes closer in a plan view. The second inclined portion 333 is inclined so as to descend to the left in the rear view (see fig. 22).

A front bent portion 334 (corresponding to a "bent portion" according to the present invention) is formed at a front edge portion of the guide member 329. The front bent portion 334 is formed at a front edge portion of the first inclined portion 332. The front bent portion 334 is detachably fastened by a bolt B3 (corresponding to a "fastener" according to the present invention) and a nut N3 in a state of facing engagement with the right side wall 325. In the present embodiment, the fastening portion of the front bent portion 334 by the bolt B3 is one portion. The bolt B3 protrudes rightward from the right side wall 325. That is, the front bent portion 334 is detachably fastened to the right side wall 325 with a bolt B3 fastened from a direction perpendicular to the right side wall 325.

A rear bent portion 335 (corresponding to a "bent portion" according to the present invention) is formed at a rear edge portion of the guide member 329. The rear bent portion 335 is formed at a rear edge portion of the upper surface portion 331, a rear edge portion of the first inclined portion 332, and a rear edge portion of the second inclined portion 333. The rear bent portion 335 is detachably fastened by a bolt B3 and a nut N3 in a state of facing the vertical wall 330. In the present embodiment, the fastening portion of the rear bent portion 335 by the bolt B3 is one portion. The bolt B3 detachably fastens a portion of the rear bent portion 335 corresponding to the rear edge portion of the second inclined portion 333 to the vertical wall 330. The bolt B3 projects forward from the vertical wall 330. That is, the rear bent portion 335 is detachably fastened to the vertical wall 330 by a bolt B3 fastened in a direction parallel to the right side wall 325.

A locking portion 336 is provided at the upper edge of the guide member 329, and the locking portion 336 is inserted into the upper edge of the opening 325a to lock with a portion of the right side wall 325 along the upper edge of the opening 325a. The locking portion 336 is constituted by a bent portion formed at the left edge portion of the upper surface portion 331. The locking portion 336 is positioned in the vicinity of the upper frame 326 in a state of being inserted into the upper edge portion of the opening 325a (a state of being locked to a portion of the right side wall 325 along the upper edge portion of the opening 325 a). The locking portion 336 includes: an insertion portion 336a inserted into an upper edge portion of the opening 325 a; and a pair of front and rear edge portions 336b along the right side surface of the portion of the right side wall 325 along the upper edge portion of the opening portion 325a. The front and rear edge portions 336b are arranged in front and rear of the insertion portion 336 a.

By inserting the insertion portion 336a into the upper edge portion of the opening portion 325a with the front and rear edge portions 336b along the right side surface of the portion of the right side wall 325 along the upper edge portion of the opening portion 325a, the portion of the right side wall 325 along the upper edge portion of the opening portion 325a is sandwiched between the insertion portion 336a and the front and rear edge portions 336 b. By inserting the insertion portion 336a into the upper edge portion of the opening 325a in this manner, the locking portion 336 is locked to the portion of the right side wall 325 along the upper edge portion of the opening 325a.

A lower bent portion 337 (corresponding to a "bent portion" according to the present invention) is formed at a lower edge portion of the guide member 329. The lower bent portion 337 is formed at a lower edge portion of the second inclined portion 333. The lower bent portion 337 is detachably fastened by a bolt B3 and a nut N3 in a state of facing engagement with the right side wall 325. In the present embodiment, the fastening position of the lower bent portion 337 by the bolt B3 is two positions. The bolt B3 protrudes rightward from the right side wall 325. That is, the lower bent portion 337 is detachably fastened to the right side wall 325 by a bolt B3 fastened from a direction perpendicular to the right side wall 325.

[ other modes for carrying out the invention in embodiment 3 ]

(1) In the above embodiment, the locking portion 336 is provided at the upper edge portion of the guide member 329. However, a "folded portion" according to the present invention may be formed at the upper edge portion of the guide member 329, and the "folded portion" may be detachably fastened by the bolt B3 and the nut N3 in a state of facing engagement with the right side wall 325.

(2) In the above embodiment, the front bent portion 334 is detachably fastened by the bolt B3 and the nut N3 in a state of facing the right side wall 325. However, the "engaging portion" according to the present invention may be provided at the front edge portion of the guide member 329.

(3) In the above embodiment, the lower bent portion 337 is detachably fastened by the bolt B3 and the nut N3 in a state of facing engagement with the right side wall 325. However, the "engaging portion" according to the present invention may be provided at the lower edge portion of the guide member 329.

(4) In the above embodiment, the front bent portion 334 is detachably fastened to the right side wall 325 with the bolt B3 fastened from the direction perpendicular to the right side wall 325. However, the front bent portion 334 may be detachably fastened to the right side wall 325 by a bolt B3 fastened from a direction substantially perpendicular to the right side wall 325.

(5) In the above embodiment, the rear bent portion 335 is detachably fastened to the vertical wall 330 by the bolt B3 fastened from the direction parallel to the right side wall 325. However, the rear bent portion 335 may be detachably fastened to the vertical wall 330 by a bolt B3 fastened from a direction substantially parallel to the right side wall 325.

(6) In the above embodiment, the secondary reducing device 324 is provided in the right vicinity of the threshing device 308. However, the secondary reducing device 324 may be disposed adjacent to the left of the threshing device 308.

(7) The present invention can be utilized for a self-threshing type combine harvester in addition to a whole stalk input type combine harvester.

Description of the reference numerals

[ 1 st embodiment ]

8. Harvesting frame

9. Harrow reel

10. Cutting device

11. Screw conveyor

12. Nearside divider

15. Side wall

33. Bottom surface part (bottom)

34a front lower part (the part of the lower part of the crop divider which is closer to the front side than the bulge part)

34b rear lower part (lower part)

34c front end portion

34d rear end portion

43. Bulge part

43a front end portion

43b rear end portion

43c top part

46. Guide part

46a front end portion

46b rear end portion

47. Guide part

47a front end portion

47b rear end portion

48. Other guide parts

48a front end portion

49. Other guide parts

49a front end portion

A1 Most advanced position

A2 Last position

B1 Imaginary line

Length of L1

Length of L2

P1 axle core

P3 axle core

[ 2 nd embodiment ]

206. Feeding device

218. Transverse feed screw conveyor

227. Spiral conveyor roller

228. Harrow body

239. Sliding guide body

248. Bolt

249. Stay bar

253. Through-hole forming part

257. Projection part

258. Narrow part of width

259. Flat plate part

259B plane part

260. Rising part

261. Surrounding part

[ 3 rd embodiment ]

308. Threshing device

312. Threshing part

313. Sorting section

324. Secondary reduction device

325. Right side wall (horizontal side wall)

325a opening part

329. Guide member

332. First inclined part (inclined part)

334. Front bending part (bending part)

335. Rear bend (bend)

336. Stop part

337. Lower bending part (bending part)

B3 Bolts (fasteners).

Claims (9)

1. A harvester is characterized in that a harvester is provided,

the disclosed device is provided with:

a harvesting frame provided with right and left side walls;

a cutting device provided on the harvesting frame so as to be positioned between the right and left side walls, for cutting the crop in the field; and

a crop divider provided on the side wall so as to protrude forward of the cutting device;

the crop in the field is divided by the side wall and the divider;

a flat bottom surface provided at a portion of the side wall adjacent to the cutting device;

a lower part of the divider is provided with a bulge part bulging downwards than an imaginary line containing the bottom surface in a side view;

the bottom of the front part of the bulge part is formed into a rear-falling inclined shape;

a lower portion of the divider is formed in an inclined shape that is inclined rearward and forward of the bulging portion;

the front end of the bulging portion and the rear end of the lower portion of the crop divider on the front side of the bulging portion are smoothly continuous.

2. A harvester as in claim 1,

the bulging portion extends from a lower portion of the crop divider along a lower portion of the sidewall to the bottom surface.

3. A harvester as in claim 1,

the lower part of the divider is positioned on the imaginary line in a state where the bulging part is removed.

4. A harvester as in claim 1,

the bulging portion is formed in an inverted triangle shape bulging downward from the imaginary line in a side view;

the length in the front-rear direction across the top of the bulging portion and the rear end of the bulging portion is set to be longer than the length in the front-rear direction across the top of the bulging portion and the front end of the bulging portion.

5. A harvester as in claim 1,

the bulging portion is formed in an inverted triangle shape bulging downward from the imaginary line in a side view;

a guide portion that guides the crop in the field toward a left and right center portion of the harvesting frame is provided on an inner surface of the crop divider in the harvesting width direction;

the guide portion extends rearward along the inner surface from a position corresponding to a top portion of the bulging portion.

6. A harvester as in claim 5,

a screw conveyor that is rotationally driven around a shaft center along the left-right direction and that laterally feeds the crop cut by the cutting device;

the rear end of the guide portion extends to a position between the rotation locus of the outer peripheral portion of the screw conveyor and the cutting device in a side view.

7. A harvester as in claim 5,

the harvesting frame is provided with other guide parts for guiding crops to the left and right central parts of the harvesting frame.

8. A harvester as in claim 7,

the front end of the other guide portion is located more rearward than the front end of the guide portion in a side view.

9. A harvester according to any of claims 1-8,

a raking reel which is rotationally driven around a shaft core along the left-right direction and rakes the crops in the field toward the cutting device;

the raking reel is configured to be capable of changing the position of the raking reel in the front-rear direction so as to be positioned at a foremost position on the front side of the front end of the divider and at a rearmost position on the rear side of the front end of the divider, across a foremost end portion of the outer peripheral portion of the raking reel.

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