WO2020261864A1

WO2020261864A1 - Harvester and combine

Info

Publication number: WO2020261864A1
Application number: PCT/JP2020/021036
Authority: WO
Inventors: 小林宜泰; 熊谷雅行; 一二三慶城; 谷和樹; 佐々木諒介
Original assignee: 株式会社クボタ
Priority date: 2019-06-27
Filing date: 2020-05-28
Publication date: 2020-12-30
Also published as: CN113677189B; CN113677189A

Abstract

A harvester is provided with: a reaping frame 8 provided with a right and a left side wall 15; a cutting device 10 provided so as to be positioned between the right and left side walls 15, the cutting device 10 cutting a crop in a field; and grass-dividing tools 12 provided to each of the side walls 15 so as to project farther to the front side than the cutting device 10. A flat bottom surface 33 is provided to the portion of each of the side walls 15 that is adjacent to the cutting device 10. A bulge section 43, which bulges farther downward than a virtual line B1 that includes the bottom surface 33 in side view, is provided to a lower part 34b of each of the grass-dividing tools 12.

Description

Harvester and combine

The present invention relates to a harvester and a combine.

[1] Conventionally, there is a harvester equipped with a cutting section for cutting crops in the field.

In the harvesting section of a conventional combine harvester, which is an example of a harvester, as disclosed in Patent Document 1, the cutting frame is provided with right and left side walls, and a cutting device is provided between the right and left side walls. It is provided on the cutting frame so that it is located, and the weeding tool is provided on the side wall and projects forward of the cutting device.

As a result, as the harvester progresses, the side walls and weeding tools divide the crops in the field into those that are introduced into the cutting section and those that are left in the field so that they can be cut in the next step. , The crop introduced into the cutting section is cut by a cutting device and cut.

In Patent Document 1, the flat bottom surface of the side wall and the lower part of the weeding tool are connected so as to be continuous in a side view, and the flat bottom surface of the side wall and the lower part of the weeding tool are on one straight line. They are lined up, and the lower part of the weeding tool is set so that it is located slightly above the field scene.

[2] Conventionally, there is a harvester that is configured to collect the harvested crops in the width direction of the machine by a horizontal feed auger and transport them to the rear side by a feeder.

In a conventional combine harvester, which is an example of a harvester, conventionally, a sliding guide body that slides and guides the scraped body so as to move out of the auger drum is located on the inner peripheral surface side of the auger drum and is located on the inner peripheral side. In some cases, the side surface of the fixture was attached from the inner side in the radial direction while being sandwiched by a plate-shaped connecting member in the fixture unit. The sliding guide body is made of a synthetic resin material with less wear, and the connecting member is made of a metal material to firmly support it (see, for example, Patent Document 2).

[3] Conventionally, as a combine, for example, the combine described in Patent Document 3 is known. The combine described in Patent Document 3 is provided with a threshing section for threshing the harvested grain (“threshing section [A]” in the document) and a threshing section below the threshing section, and the threshing section removes the harvested grain. It is provided with a sorting unit (“sorting unit [B]” in the literature) for sorting the obtained grains and a threshing device (“threshing machine [D]” in the literature).

Japanese Patent Application Laid-Open No. 2012-213342 Japanese Patent Application Laid-Open No. 2017-158450 Japanese Patent Application Laid-Open No. 2006-14708

[1] The issues corresponding to the background technology [1] are as follows.
As in Patent Document 1, if the lower part of the weeding tool is slightly above the field scene, when the crop in the field is weeded by the weeding tool, the crop in the field near the weeding tool becomes Without weeding towards the cutting device, it enters between the lower part of the weeding tool and the field scene, is pulled out of the field by the weeding tool as the harvester progresses, and stays in the lower part of the weeding tool. there is a possibility.

An object of the present invention is to reduce the state in which crops stay in the lower part of the weeding tool as the harvester progresses in the harvester.

[2] The issues corresponding to the background technology [2] are as follows.
In the above-mentioned conventional configuration, when the tip of the scraping body in the lateral feed auger is worn due to long-term use, the scraping body penetrates inward in the radial direction from the sliding guide body and slides with the sliding guide body. In some cases, the auger drum may be out of motion and enter the inside of the auger drum so that it cannot be pulled out, and there is a risk that the good feeding action of the lateral feed auger cannot be continued.
In particular, when the scraped body is bent in the circumferential direction in the middle due to the reaction force acting on the scraped body during the scraping action of the cut grain culm, there is a great risk of entry as described above. It was.

Therefore, there has been a demand for a harvester that can continue the good feeding action of the harvested culm by the horizontal feeding auger for a long period of time.

[3] The issues corresponding to the background technology [3] are as follows.
The combine described in Patent Document 3 has room for improvement in that it facilitates access to the inside of the threshing section when performing maintenance inside the threshing section.

In view of the above situation, there is a demand for a combine that can easily maintain the inside of the threshing section.

[1] The solutions corresponding to the problem [1] are as follows.
The harvester of the present invention includes a cutting frame provided with right and left side walls, and a cutting device provided on the cutting frame so as to be located between the right and left side walls to cut crops in a field. A weeding tool provided on the side wall so as to project forward from the cutting device is provided, and the side wall and the weeding tool are configured to weed crops in the field. A flat bottom surface is provided in a portion adjacent to the cutting device, and a bulging portion that bulges below the virtual line including the bottom surface in a side view is provided in the lower part of the weeding tool. There is.

According to the present invention, on the flat bottom surface provided in the portion of the side wall adjacent to the cutting device, the bulging portion that bulges downward in the side view from the virtual line including the flat bottom surface of the side wall is formed. It is provided at the bottom of the weeding tool. Since the bulging portion approaches the field scene, the space between the bulging portion and the field scene can be narrowed.

As a result, when the crops in the field are weeded by the weeding tool as the harvester progresses, there is a possibility that the crops in the field near the weeding tool may get in between the bulge and the field scene. As the size becomes smaller, the crops in the field near the weeding tool are properly weeded without being pulled out from the field by the weeding tool, and are easily cut by the cutting device.
According to the present invention, it is possible to suppress the possibility that the crops in the field near the weeding tool enter between the bulging part of the weeding tool and the field scene and stay there, and the crops in the field can be produced by the weeding tool. Properly weeding can improve harvesting performance.

In the present invention, it is preferable that the bulging portion extends from the lower part of the weeding tool to the bottom surface along the lower part of the side wall.

According to the present invention, the bulge extends along the lower part of the side wall to the flat bottom surface of the side wall, so that the narrow portion between the bulge and the field scene is compared along the front-rear direction. Since it can be a long area, it is possible to further reduce the possibility that crops in the field near the weeding tool enter between the bulge and the field scene.

In the present invention, it is preferable that the lower portion of the weeding tool is located on the virtual line in a state where the bulging portion is removed.

If there are many convex or raised parts in the field scene, the bulging part may come into contact with the field scene and be damaged. Therefore, according to the present invention, the bulging part is swelled by removing it from the weeding tool. It is possible to prevent the protrusion from coming into contact with the field scene and being damaged.
When the bulge is removed, the lower part of the weeding tool is located on the virtual line, so it is unlikely that crops in the field near the weeding tool will get between the lower part of the weeding tool and the field scene.

In the present invention, the bottom portion of the front portion of the bulging portion is formed in an inclined shape that descends backward, and the portion of the lower portion of the weeding tool that is in front of the bulging portion is formed in an inclined shape that descends backward. Therefore, it is preferable that the front end portion of the bulging portion and the rear end portion of the lower portion of the weeding tool on the front side of the bulging portion are smoothly continuous.

In the harvester, in order to prevent the front end of the weeding tool from coming into contact with the field scene, as in Patent Document 1, the lower part of the weeding tool is formed in an inclined shape that descends backward, so that the weeding tool is used. The front end may be set to move upward from the field scene.

According to the present invention in the above-mentioned state, the front end portion of the bulging portion and the rear end portion of the lower portion of the weeding tool on the front side of the bulging portion are smoothly continuous, and the weeding tool From the portion of the lower part on the front side of the bulging portion to the bottom of the front portion of the bulging portion, the shape is inclined backward. As a result, it is unlikely that crops in the field will adhere to and stay near the front end of the bulge.

In the present invention, the bulging portion is formed in an inverted triangular shape that bulges downward from the virtual line in a side view, and is before and after extending from the top of the bulging portion to the rear end portion of the bulging portion. It is preferable that the length in the direction is set to be longer than the length in the front-rear direction extending over the top of the bulge and the front end of the bulge.

When the bulging portion is formed in an inverted triangular shape, the portion of the bulging portion from the top to the rear side of the bulging portion faces the field scene. According to the present invention, the bulging portion has an inverted triangular shape. In the protruding portion, the portion on the rear side from the top of the bulging portion is long.
As a result, the narrow portion between the bulge and the field scene can be made into a relatively long region along the front-back direction, so that the crops in the field near the weeding tool can be combined with the bulge and the field scene. The possibility of getting in between can be further reduced.

In the present invention, the bulging portion is formed in an inverted triangular shape that bulges downward from the virtual line in a side view, and the crop in the field is cut on the inner surface of the weeding tool in the cutting width direction. It is preferable that a guide portion for guiding toward the left and right central portions is provided, and the guide portion extends rearward along the inner surface from a position corresponding to the top of the bulging portion. ..

According to the present invention, the crops in the field are guided toward the left and right central portions of the cutting frame by the guide portion provided on the inner surface of the weeding tool in the cutting width direction, so that the crops in the field near the weeding tool are guided. It is possible to further reduce the possibility that the swelling part and the field scene are inserted.

According to the present invention, when the bulging portion is formed in an inverted triangular shape, the guide portion extends rearward along the inner surface of the weeding tool from the position corresponding to the top of the bulging portion.
As a result, the front end of the guide section acts on the crops in the field relatively early, and the guide function of the guide section is exerted relatively early, so that the crops in the field near the weeding tool swell. The possibility of getting in between the part and the field scene can be further suppressed.

In the present invention, an auger is provided that is rotationally driven around an axis along the left-right direction to laterally feed the crop cut by the cutting device, and the rear end of the guide portion is viewed from the side and the auger is provided. It is preferable that the rotation locus of the outer peripheral portion of the surface is extended to a position between the cutting device and the cutting device.

The harvester may be provided with an auger that is rotationally driven around the axis along the left-right direction and laterally feeds the crops cut by the cutting device. The crops cut by the cutting device are laterally fed by the auger, collected, and transported from the cutting section to the threshing device, storage section, and the like.

When the guide portion is provided as described above, according to the present invention, the rear end portion of the guide portion is extended to a position between the rotation locus of the outer peripheral portion of the auger and the cutting device in a side view. ..
As a result, the crops in the field are guided by the guide portion toward the left and right center portions of the cutting frame, cut by the cutting device, and the cut crops are reasonably guided to the auger by the guide portion. ..

In the present invention, it is preferable that a separate guide portion for guiding the crop toward the left and right central portions of the cutting frame is provided.

According to the present invention, in addition to the guide portion, another guide portion for guiding the crop toward the left and right center portions of the cutting frame is provided. Therefore, the guide portion and the separate guide portion are used to guide the crop in the field to the cutting frame. The guidance function for guiding toward the center of the left and right sides is high.

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

When a guide portion and another guide portion are provided, according to the present invention, the front end portion of the separate guide portion is located behind the front end portion of the guide portion in a side view, so that the guide function of the guide portion is exhibited. After that, the guidance function of another guide unit will be exhibited next.
As a result, the timing at which the guide function is exerted in the guide portion and the separate guide portion is shifted, so that the guide function can be sufficiently exerted in each of the guide portion and the separate guide portion.

In the present invention, a scraping reel is provided which is rotationally driven around an axis along the left-right direction to scrape crops in a field toward the cutting device, and the scraping reel is an outer peripheral portion of the scraping reel. The front end of the weeding tool is located in front of the front end of the weeding tool, and the foremost end of the weaving tool is located in the rear of the front end of the weeding tool. It is preferable that the position can be changed.

The harvester may be provided with a scraping reel that is rotationally driven around the axis along the left-right direction to scrape the crops in the field toward the cutting device.
According to the present invention, the scraping roll is repositioned back and forth over the front position where the front end portion of the outer peripheral portion of the scraping reel is located on the front side of the front end portion of the weeding tool and the rearmost position located on the rear side. It is possible.
As a result, the position of the scraping reel can be set for the crops in the field near the front end of the weeding tool according to the state of the field, the state of the crop, etc., so that the weeding of the weeding tool Performance can be improved.

[2] The solutions corresponding to the problem [2] are as follows.
The characteristic configuration of the harvester according to the present invention is a lateral feed auger that transfers the harvested grain auger in the lateral width direction of the machine body, and a harvested grain auger that is transferred by the lateral feed auger and then sent out to the rear side of the machine body. A feeder is provided, and the lateral feed auger is provided with spiral blades for transferring grains on the outer periphery thereof, and a cylindrical auger drum that rotates around the horizontal axis core and the auger that rotates with the rotation of the auger drum. A scraping body that rotates integrally while moving out of the drum to send the harvested grain to the feeder, and an insertion hole provided at a position corresponding to the opening formed in the auger drum and through which the scraping body is inserted are formed. At the same time, a sliding guide body for sliding and guiding the scraping body from the auger drum and a stay for attaching the sliding guide body to the auger drum are provided, and the stay is provided. The insertion hole forming portion provided inside the auger drum and in which the insertion hole is formed is provided in the sliding guide body with a protruding portion protruding inward in the radial direction from the stay. At the point.

According to the present invention, the scraping body moves in and out of the auger drum through the insertion hole formed in the sliding guide body. At that time, since the insertion hole forming portion in which the insertion hole is formed of the sliding guide body is provided with a protruding portion that protrudes inward in the radial direction, the radial direction of the insertion hole forming portion that guides the scraped body. The width of is increased.

As a result, even when the tip of the scraping body is worn, it is possible to prevent the scraping body from entering the radial inward side of the sliding guide body, and the lateral feed auger is used. It has become possible to continue the feeding action of good harvested grain culms for a long period of time.

In the present invention, it is preferable that the insertion hole has a narrow portion having a narrow width in the direction of the horizontal axis in the middle portion in the radial direction.

According to this configuration, by forming a narrow portion in the middle of the insertion hole in the radial direction, it is possible to easily prevent the scraping body from passing through the insertion hole and entering the inward side in the radial direction.

In the present invention, it is preferable that the narrow portion is formed at a position closer to the outer side in the radial direction than the stay.

According to this configuration, even if a strong reaction force due to the cut grain culm acts on the scraped body and it bends, it bends starting from the narrow part located on the outer side in the radial direction from the stay. Compared to the case where the stay is bent as the starting point, the bent portion is closer to the radial outer side, and this also reduces the possibility that the scraping body enters the radial inner side of the auger drum.

In the present invention, the sliding guide is provided with bolts mounted from the radial outer side of the auger drum at each of the locations located on both sides of the insertion hole in the circumferential direction of the auger drum. It is preferable that the auger drum is fixed to the auger drum together with the radial inner side end portion of the bolt and the radial inner side end portion of the protruding portion is provided adjacent to each other.

According to this configuration, the sliding guide is stably and firmly fixed by bolts on both sides of the insertion hole in the circumferential direction. Since the bolts are mounted along the radial direction of the auger drum, the front and rear bolts are arranged so that the inner ends in the radial direction approach each other. Then, the bolts and the protruding portions are provided close to each other so as not to interfere with each other. As a result, the protruding length of the protruding portion can be increased to the extent that it does not interfere with the bolt, and it is easy to prevent the scraping body from entering the radial inward side.

In the present invention, it is preferable that the stay has a surrounding portion that surrounds the protruding portion, and a rising portion that extends along the radial direction is formed at the lateral end portion of the surrounding portion.

According to this configuration, when the stay is attached from the inside of the auger drum, the stay is attached so as to surround the protruding portion of the sliding guide by the surrounding portion, and is attached to the auger drum with bolts or the like.
At that time, the mounting work can be performed by having a rising portion formed at the lateral end portion of the surrounding portion. Since the rising portion extends along the radial direction, it is easy to grip and operate.

In the present invention, it is preferable that the stay is provided with a flat plate portion having a shape that bends along the circumferential direction of the auger drum, and one flat surface portion of the flat plate portion is provided with the rising portion.

According to this configuration, the flat plate portion of the stay can be manufactured by bending the flat plate-shaped member along the circumferential direction. Moreover, at that time, since the rising portion is formed on one flat surface portion of the flat plate portion, the rising portion is provided in a state of being connected to one flat surface portion.
That is, by bending at the same time as the bending process, the rising portion can be formed without increasing the labor of the process.

[3] The solutions corresponding to the problem [3] are as follows.
The features of the present invention include a threshing section for threshing the harvested grain sill and a sorting section provided below the threshing section for the threshing section to sort the grains obtained by threshing the harvested grain stalk. A threshing device having a threshing device, a second reduction device provided next to the threshing device and reducing the second product selected by the sorting section to the sorting section, and the second reduction device in the threshing section are located. An opening formed on the lateral side wall on the side through which the second product from the second reduction device passes, and a transfer end portion and the opening of the second reduction device, which are connected to the second reduction device. A guide member for guiding the numbered object toward the opening is provided, and the guide member is configured to be detachable from the opening.

According to this feature configuration, by removing the guide member from the opening, the opening is exposed to the side of the threshing device. Thereby, the inside of the threshing part can be maintained from the opening on the side of the threshing device. That is, according to this feature configuration, it is possible to realize a combine that can easily maintain the inside of the threshing portion.

Further, in the present invention, a locking portion is provided at the edge of the guide member so as to be inserted into the edge of the opening to lock the lateral side wall along the edge of the opening. It is preferable to have.

According to this feature configuration, the guide member can be easily attached / detached by inserting the locking portion into the edge portion of the opening or pulling it out from the edge portion of the opening.

Further, in the present invention, it is preferable that a bent portion is formed at the edge portion of the guide member, and the bent portion is detachably fastened by a fastener in a state of being faced with the lateral side wall.

According to this feature configuration, the guide member can be firmly attached to the lateral side wall by fastening the bent portion with a fastener in a state where the bent portion faces the lateral side wall.

Further, in the present invention, a locking portion that is inserted into the upper edge portion of the guide member and is inserted into the upper edge portion of the opening to lock the lateral side wall along the upper edge portion of the opening. Is provided, a bent portion is formed at the lower edge portion of the guide member, and the bent portion is detachably fastened by a fastener in a state of being faced with the lateral side wall.

According to this feature configuration, the guide member can be easily attached / detached by inserting the locking portion into the edge portion of the opening or pulling it out from the edge portion of the opening. Further, by fastening the bent portion with the fastener in a state where the bent portion is faced with the lateral side wall, it is possible to prevent the threshed product 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, the guide member is arranged in front of the transport end portion of the second reduction device, and the guide member has an inclined portion that is inclined so as to approach the lateral side wall toward the front side in a plan view. Bent portions are formed on both front and rear edges of the inclined portion, and the bent portions on the front side are detachably fastened by fasteners fastened from a direction perpendicular to or substantially perpendicular to the lateral side wall. It is preferable that the bent portion on the rear side is detachably fastened by a fastener that is fastened from a direction parallel to or substantially parallel to the lateral side wall.

According to this feature configuration, the second product from the second reduction device flows along the inclined portion.
As a result, the second product can be guided toward the left and right center portions of the sorting unit so that the second product is not reduced to the left and right one side portions of the sorting unit. Further, the guide member is fastened from two directions by the fastener. As a result, even if the second object from the second reduction device collides with the guide member and the guide member tries to come off in one direction, the guide member is hard to come off.

It is a figure which shows the 1st Embodiment (hereinafter, the same as FIG. 8), and is the right side view of the combine. It is a top view of the combine. It is the right side view of the cutting part. It is a right side view near the right weeding tool and the removed right bulge. It is a perspective view of the vicinity of the weeding tool on the right. It is a top view of the cutting part. It is a left side view near the right weeding tool and the right bulge. It is a right side view near the left weeding tool and the left bulge. It is a figure which shows the 2nd Embodiment (hereinafter, the same until FIG.14), and is the whole side view of the ordinary type combine. It is a partial cross-sectional plan view of the front part of the combine. It is a vertical sectional side view of a horizontal feed auger. It is a partial longitudinal side view of a lateral feed auger. It is a perspective view of a sliding guide body and a stay. It is a partial longitudinal side view of the lateral feed auger of another embodiment. It is a figure which shows the 3rd Embodiment (hereinafter, the same until FIG.22), and is the left side view which shows a combine. It is a top view which shows a combine. It is a left side view which shows the inside of a threshing apparatus. It is a right side view which shows the threshing apparatus. It is a plane partial sectional view which shows the guide member. It is a top view which shows the guide member. It is an exploded right side view which shows the guide member. It is a rear view which shows the guide member.

[First Embodiment]
First, the first embodiment will be described with reference to FIGS. 1 to 8.

1 to 8 show a normal combine harvester, which is an example of a harvester. In FIGS. 1 to 8, F indicates a forward direction, B indicates a backward direction, and U indicates an upward direction. , D indicates a downward direction, R indicates a right direction, and L indicates a left direction.

(Overall composition of combine harvester)
As shown in FIGS. 1 and 2, the machine body 1 is supported by the right and left crawler type traveling devices 2, and the driving unit 3 is provided on the right side of the front part of the machine body 1, and the threshing device 4 Is provided on the left side of the rear part of the machine body 1, and the grain hopper 5 is provided on the right part of the rear part of the machine body 1.

The feeder 6 is connected to the front part of the threshing device 4 and extends to the front side, and the cutting part 7 is connected to the front part of the feeder 6. The cutting part 7 is connected to the scraping reel 9, the cutting device 10, and the auger. 11 and a weeding tool 12 are provided.

With the above configuration, the crops in the field are divided into the crops introduced into the cutting section 7 by the side wall 15 of the cutting section 7 and the weeding tool 12, and the crops left in the field so as to be cut in the next step. The crop to be introduced into the cutting section 7 is scraped toward the cutting device 10 by the scraping reel 9.

The crop scraped by the scraping reel 9 is cut by the cutting device 10, laterally fed by the auger 11 toward the front inlet of the feeder 6, transported through the feeder 6 and supplied to the threshing device 4. The grains that have been threshed by the threshing device 4 are thrown into the grain hopper 5.

(Overall composition of the cutting section)
As shown in FIGS. 3 and 6, the cutting section 7 is provided with a cutting frame 8 that serves as a skeleton of the cutting section 7. A bottom portion 13 formed in an arc shape in a side view is provided on the cutting frame 8 over the entire width of the cutting 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 cutting portion 7 is connected to the front portion of the feeder 6.

The right side wall 15 is connected to the right part of the bottom 13 and the rear wall part 14, the left side wall 15 is connected to the left part of the bottom 13 and the rear wall part 14, and the right and left side walls 15 are the cutting frame. It is provided in 8. The right and left weeding tools 12 are connected to the right and left side walls 15 so as to project forward of the cutting device 10.

(Structure of scraping reel)
As shown in FIG. 3, the right and left support frames 17 are vertically swingably supported by the right rear portion and the left rear portion of the cutting portion 7 around the axis P2 along the left-right direction, and extend to the front side. It is exposed. A hydraulic cylinder 18 capable of changing the positions of the right and left support frames 17 up and down is provided over the side wall 15 and the support frame 17.

The right and left support brackets 19 are attached to the front part of the right and left support frames 17, and the support brackets 19 can be repositioned and fixed in the front-rear direction along the support frame 17. The drive shaft 20 is rotatably supported around the axis P3 along the left-right direction over the right and left support brackets 19.

The right and left reel frames 21 having a pentagonal shape when viewed from the side are connected to the right and left parts of the drive shaft 20. In the right support bracket 19, a pentagonal reel frame 22 is rotatably supported around a shaft core (not shown) along the left-right direction slightly behind the shaft core P3.

Five support shafts 23 along the left-right direction are rotatably attached over the five tops of the right and left reel frames 21, and a large number of rod-shaped tines 24 are connected to the support shaft 23. ing. The link member 25 is connected to the right end of the support shaft 23, and the link member 25 is rotatably connected to the five tops of the reel frame 22.

A transmission belt 27 is attached to the input pulley 20a connected to the right end of the drive shaft 20 and the drive pulley 26 arranged at the position of the shaft core P2, and the tension for maintaining the tension of the transmission belt 27 is maintained. The pulley 28 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 of FIG. 3, and is integrated with the drive shaft 20 to the right. And the left reel frame 21 is rotationally driven.

As the reel frame 22 rotates together with the reel frame 21, the tine 24 is always maintained in the downward posture shown in FIG. 3 by the five tops of the link member 25 and the reel frame 22, and the support shaft 23 And the tine 24 scrapes the crops in the field towards the cutting device 10.

In a configuration in which the support bracket 19 is repositioned in the front-rear direction along the support frame 17 and the scraping reel 9 is repositioned back and forth, the foremost end of the rotation locus of the support shaft 23 is scraped reel in a side view. When the front end of the outer peripheral portion of 9 is used, the positional relationship between the weeding tool 12 (main body 34) and the front end 34c (see (Structure of the weeding tool) described later) is as described below. It has become.

As shown in FIG. 3, the foremost end of the outer peripheral portion of the scraping reel 9 reaches the foremost position A1 located in front of the front end portion 34c of the weeding tool 12 (main body portion 34) in a side view. 9 can be repositioned to the front side.
The scraping reel 9 is positioned on the rear side until the frontmost end of the outer peripheral portion of the scraping reel 9 is located at the rearmost position A2 located behind the front end portion 34c of the weeding tool 12 (main body portion 34) in a side view. It can be changed.

(Configuration of cutting device)
As shown in FIGS. 3 and 6, the support member 16 formed in an angle shape in a side view is connected to the front portion of the bottom portion 13 and is provided over the entire width of the cutting portion 7 in the left-right direction.

The cutting device 10 is connected to the support member 16 and is provided on the cutting frame 8 so as to be located between the right and left side walls 15. The cutting device 10 has a large number of fixed blades and a movable blade that is reciprocally driven in the left-right direction along the fixed blades, and is provided over the entire width of the cutting portion 7 in the left-right direction.

With the above configuration, as described in the above (configuration of the scraping reel), when the crop in the field is scraped toward the cutting device 10 by the scraping reel 9, the root of the crop is cut by the cutting device 10. Will be done.

(Composition of auger)
As shown in FIGS. 2, 6, 7, and 8, the auger 11 includes a cylindrical main body portion 11a, right and left spiral portions 11b connected to the outer peripheral portion of the main body portion 11a, and right and left spiral portions. It has a rod-shaped scraping portion 11c arranged between 11b. The auger 11 is rotatably supported around the axis P1 along the left-right direction over the right and left side walls 15, and is rotationally driven in the counterclockwise direction of FIG.

With the above configuration, the crops cut by the cutting device 10 are sent to the auger 11 as described in the above (configuration of the cutting device). The crop sent to the auger 11 is laterally fed toward the front entrance of the feeder 6 by the spiral portion 11b of the auger 11, and is sent to the entrance of the feeder 6 by the scraping portion 11c of the auger 11. ..

(Structure of side wall in cutting part)
As shown in FIGS. 3, 5, 7, and 8, in the right and left side walls 15 connected to the right and left parts of the bottom portion 13 and the rear wall portion 14, the square pipe-shaped frame 29 is the upper portion of the side wall 15. Is connected along the front-back direction.

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

The right and left front surface portions 32 are connected to the front portions of the right and left side wall 15s in the vertical direction, and the front surface portions 32 have a predetermined lateral width along the left and right directions.
The right and left bottom surface portions 33 are connected to the lower part of the front portion of the right and left side wall 15s along the front-rear direction, and the bottom surface portion 33 has the same width as the front surface portion 32 along the left-right direction. There is. The bottom surface portion 33 is arranged below the cutting device 10 in a side view, and is a flat bottom surface provided on a portion of the side wall 15 adjacent to the cutting device 10.

The right and left inclined surface portions 40 are connected to the lower portion of the front portion of the right and left side wall 15 over the lower end portion of the front surface portion 32 and the front end portion of the bottom surface portion 33, and the inclined surface portion 40 is connected in the left-right direction. It has the same width as the front surface portion 32 and the bottom surface portion 33 along the above.

(Composition of weeding tools)
As shown in FIGS. 3, 4 and 5, in the right and left weeding tools 12 in which the right and left side walls 15 are connected, they are connected to the flat main body 34 and the upper part of the main body 34 along the front-rear direction. A rear surface portion 36 connected to the upper surface portion 35 and the rear portion of the main body portion 34 along the vertical direction, a guide portion 37 connected to the outer portion of the main body portion 34, and the like are provided. The right and left weeding tools 12 have a symmetrical shape except for the shape of the upper part of the rear surface portion 36.

The lower part of the main body 34 is formed in an inclined shape that descends backward. In the lower part of the main body 34, the front lower part 34a, which is a part on the front side of the bulge part 43 described later (configuration of the bulge part), and the rear lower part 34b located on the rear side with respect to the front lower part 34a. It is provided so that the inclination angle of the front lower portion 34a of the main body portion 34 is set to be larger than the inclination angle of the rear lower portion 34b of the main body portion 34.

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

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

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

The upper end portion 36a of the rear surface portion 36 is bent backward and extended to the rear side. In the right weeding tool 12, a notch 36b is formed in the upper part of the rear surface portion 36, and the width of the upper end portion 36a of the rear surface portion 36 is the same as the width of the rear portion of the upper surface portion 35 and the width of the frame 29. ing.

With the above configuration, the rear surface portion 36 of the weeding tool 12 is connected to the front surface portion 32 of the side wall 15 by a bolt 41, and the upper end portion 36a of the rear surface portion 36 of the weeding tool 12 is bolted to the frame 29 of the side wall 15. The right and left weeding tools 12 are connected to the right and left side walls 15.

As shown in FIGS. 4 and 7, when the virtual line B1 including the bottom surface 33 of the right and left side walls 15 is set in the side view, the right and left weeding tools 12 are connected to the side wall 15. The lower rear 34b of the right and left weeding tools 12 (main body 34) is located on the virtual line B1.

As shown in FIGS. 4 and 5, in the front surface portion 32 of the right side wall 15, an inclined portion 32a is provided at a portion corresponding to the cutout portion 36b of the rear surface portion 36 of the right weeding tool 12.
As described in the above (configuration of the scraping reel), when the scraping reel 9 is operated to the lowest position, the transmission belt 27 moves to the inclined portion 32a of the front portion 32 of the right side wall 15 and the right. Since it is located near the notch 36b of the rear surface portion 36 of the weeding tool 12, contact between the transmission belt 27 and the front surface portion 32 of the right side wall 15 and the rear surface portion 36 of the right weeding tool 12 is avoided. Be done.

(Structure of bulge)
As shown in FIGS. 4, 7 and 8, right and left bulging portions 43 are attached to the inner surfaces of the lower portions of the right and left weeding tools 12.

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

The 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 downward downward.
When viewed from the side, the length L1 in the front-rear direction extending from the top 43c of the bulge 43 to the rear end 43b of the bulge 43 becomes the top 43c of the bulge 43 and the front end 43a of the bulge 43. It is set to be longer than the length L2 in the front-rear direction.

(The bulge is attached to the weeding tool)
As shown in FIG. 4, in the right and left side walls 15, a connecting hole 15a is opened in a portion slightly above the inclined surface portion 40. In the main body 34 of the right and left weeding tools 12, a connecting hole 34f is opened in a portion slightly above the rear lower portion 34b.

As shown in FIGS. 3, 4, 7, and 8, the right and left bulging portions 43 are applied to the inner surfaces of the weeding tool 12 and the side wall 15, and the bolt 45 is inserted into the connecting hole 43d of the bulging portion 43. The bulging portion 43 is connected to the lower part of the weeding tool 12 by being inserted and tightened through the connecting hole 15a of the side wall 15 and the connecting hole 34f of the weeding tool 12 (main body portion 34). By removing the bolt 45, the bulging portion 43 can be removed from the weed tool 12.

As shown in FIG. 7, in a state where the right and left bulging portions 43 are connected to the lower part of the weeding tool 12, the bulging portion 43 bulges below the virtual line B1 in a side view. The portion where the bulging portion 43 bulges below the virtual line B1 has an inverted triangular shape.

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

The front end portion 43a of the bulging portion 43 and the rear end portion 34d of the front lower portion 34a of the weeding tool 12 (main body portion 34) (corresponding to the rear end portion of the lower portion of the weeding tool on the front side of the bulging portion). ) And are located at the same position and are smoothly continuous.

The portion between the front end portion 43a and the top portion 43c of the bulging portion 43 is formed in a backward downward inclined shape, and the front lower portion 34a of the weeding tool 12 (main body portion 34) is formed in a backward downward inclined shape. 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 weeding tool 12 (main body portion 34) have a linear inclined shape that descends backward.

When the bolt 45 is removed and the right and left bulging portions 43 are removed from the weeding tool 12, as described above (configuration of the weeding tool) and as shown in FIG. 4, the weeding tool 12 (main body) The rear lower portion 34b of the portion 34) is located on the virtual line B1.

(Structure of right and left guides)
As shown in FIGS. 6, 7 and 8, right and left guide portions that guide the crops in the field toward the left and right center portions of the cutting frame 8 on the inner surfaces of the right and left weeding tools 12 in the cutting width direction. 46, 47 are provided.

The right and left

guide portions

46 and 47 are formed of round pipes. The

front end portions

46a, 47a of the right and left

guide portions

46, 47 are placed on the weeding tool 12 (main body portion 34) together with the bulging portion 43 by bolts 45 at positions corresponding to the top portions 43c of the bulging portion 43. The right and left

guide portions

46 and 47 are connected and extend rearward along the inner surface of the weed tool 12 from a position corresponding to the top 43c of the bulging portion 43.

The support stays 46c and 47c are connected 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 connected to the side wall together with the bulging portion 43 by the bolt 45. It is connected to 15.

As shown in FIG. 7, the latter half of the right guide portion 46 is extended slightly diagonally upward with respect to the front half portion of the right guide portion 46 in a side view, and the rear end of the right guide portion 46. The portion 46b is extended to a position between the rotation locus of the outer peripheral portion of the auger 11 (spiral portion 11b) and the cutting device 10 in a side view.

As shown in FIG. 8, the left guide portion 47 is extended rearward in a straight line, and the rear end portion 47b of the left guide portion 47 is the outer peripheral portion of the auger 11 (spiral portion 11b) in a side view. It is extended to a position between the rotation locus of and the cutting device 10.

(Structure of separate guides on the right and left)
As shown in FIGS. 6, 7 and 8, separate right and left guides for guiding the crops in the field toward the left and right central parts of the cutting frame 8 on the inner surface of the right and left weeding tools 12 in the cutting width direction.

Parts

48 and 49 are provided.

The right and left

separate guide portions

48 and 49 are formed of round pipes. As shown in FIGS. 6 and 7, the front end portion 48a of the right separate guide portion 48 is located rearward of the front end portion 46a of the right guide portion 46 and is located behind the right guide portion 46 in side view. It is connected to the side wall 15 together with the bulging portion 43 by a bolt 45 so as to be located on the upper side.

The other guide portion 48 on the right is arranged between the guide portion 46 on the right and the side wall 15 (bulging portion 43) on the right in a plan view, and intersects the guide portion 46 on the right in a side view. In addition, it is extended diagonally to the lower side. 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 a side view, and is located in the vicinity of the cutting device 10.

As shown in FIGS. 6 and 8, the front end portion 49a of the left separate guide portion 49 is located behind the front end portion 47a of the left guide portion 47 and is located behind the left guide portion 46 in side view. It is connected to the side wall 15 together with the bulging portion 43 by a bolt 45 so as to be located on the upper side.

The 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 is equal to the left guide portion 47 in a plan view. It intersects. The rear end portion 49b of the left separate guide portion 49 is located above the left guide portion 47 in a side view, and the rotation locus of the outer peripheral portion of the auger 11 (spiral portion 11b) and the cutting device 10 It is extended to a position between.

[Another Embodiment of the First Embodiment]
(1) The bulging portion 43 is not formed in an inverted triangular shape, but is configured to have a downward convex shape that bulges downward from the virtual line B1 in a portion of the side wall 15 in front of the bottom surface portion 33. May be done.
According to this configuration, the bulging portion 43 is connected to the weeding tool 12 and not to the side wall 15.

(2) The right and left bulging portions 43 may have different shapes from each other.
For example, the right bulging portion 43 is configured in the shape shown in FIGS. 4 and 7, and the left bulging portion 43 is configured in the shape shown in (1) of the above-mentioned [another embodiment of the first embodiment]. You may. On the contrary, the left bulging portion 43 is formed in the shape shown in FIGS. 4 and 7, and the right bulging portion 43 is formed in the shape shown in (1) of the above-mentioned [another embodiment of the first embodiment]. You may.

(3) The right and left bulging portions 43 may be configured so that the left bulging portion 43 is provided and the right bulging portion 43 is not provided. The right bulge 43 may be provided and the left bulge 43 may not be provided.

(4) As shown in FIGS. 7 and 8, the front end portion 43a of the bulging portion 43 and the rear end portion 34d of the front lower portion 34a of the weeding tool 12 (main body portion 34) are located at the same position. If so, the inclination angle of the portion between the front end portion 43a and the top portion 43c of the bulging portion 43 is slightly larger or slightly smaller than the inclination angle of the front lower portion 34a of the weeding tool 12 (main body portion 34). It may be set to an angle.
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 weeding tool 12 (main body portion 34) are not in a straight line but in a slightly bent state.

(5) In the right and left

separate guide portions

48 and 49, the right separate guide portion 48 may be provided and the left separate guide portion 49 may not be provided. The left separate guide portion 49 may be provided, and the right separate guide portion 48 may not be provided. It may be configured so that the right and left

separate guide portions

48 and 49 are not provided.

(6) The present invention can be applied not only to ordinary combine harvesters but also to harvesters such as corn harvesters.

[Second Embodiment]
Next, the second embodiment will be described with reference to FIGS. 9 to 14.

Hereinafter, a case where the embodiment of the harvester according to the present invention is applied to an ordinary combine 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, it is defined along the machine body traveling direction in the working state. That is, the direction indicated by the reference numeral (F) in FIG. 9 is the front side of the aircraft, and the direction indicated by the reference numeral (B) in FIG. 9 is the rear side of the aircraft.

As shown in FIG. 9, in this combine, an axial flow type threshing device 203 and a grain tank 204 for storing grains are arranged side by side on a traveling machine 202 provided with a pair of left and right crawler traveling devices 201. At the same time, the operation unit 205 is deployed in front of the grain tank 204. A feeder 206 for transporting a cutting grain culm is connected to the front portion of the threshing device 203 so as to swing up and down around the horizontal axis P12, and a cutting portion 207 having a cutting width substantially equivalent to the width of the machine body is connected to the front end of the feeder 206. It is connected. A rotary reel 208 for scraping the planted crops backward is provided above the front portion of the cutting portion 207. At the rear of the machine body, a grain discharge device 209 for discharging grains stored in the grain tank 204 to the outside is provided. An engine 210 is provided below the driving unit 205, and the power of the engine 210 is transmitted to each part of the machine body so that the cutting work can be performed while the machine body is running.

As shown in FIGS. 9, 10 and 11, the cutting section 207 forms a back plate 213 and a bottom surface forming a back surface on a cutting section frame 212 formed by connecting a square pipe, an angle member having an L-shaped cross section, and the like. The transport deck 214 and the pair of left and

right side plates

215 and 216 forming the left and right side surfaces are connected and fixed to form a frame structure. Hair clipper type cutting devices 217 are deployed along the front ends of the transport deck 214 over the left and

right side plates

215 and 216, and the cut grain culms are directed toward the middle side in the width direction of the machine body over the left and

right side plates

215 and 216. A horizontal feed auger 218 for collecting and transporting is erected.

The feeder 206 is configured by equipping a scraping conveyor 220 inside a transport case 219 formed in a substantially square tubular shape. The scraping conveyor 220 is laterally spread over a drive rotating body 221 that rotates around a horizontal axis core, a driven rotating body 222, a pair of left and right transport chains 223 wound around them, and a pair of left and right transport chains 223. It is provided with a plurality of transport bars 224 connected by overhead, and the crops that are laterally fed and delivered by the lateral feed auger 218 are scraped up and transported along the bottom surface of the transport case 219 and transported to the front end of the threshing device 203. It is supposed to be thrown into.

A hydraulic cylinder C2 is erected between the front part of the machine frame 225 and the lower part of the feeder 206 in the traveling machine 202. The cutting section 207 is configured so that the cutting section 207 can swing up and down around the horizontal axis P12 integrally with the feeder 206 by the expansion and contraction operation of the hydraulic cylinder C2.

The lateral feed auger 218 will be described.
The lateral feed auger 218 is provided with a spiral blade 226 for transferring grains on the outer periphery thereof, and has a cylindrical auger drum 227 that rotates around the horizontal axis core and moves out of the auger drum 227 as the auger drum 227 rotates. It is provided with a scraping body 228 that rotates integrally and sends the harvested grain to the feeder 206. That is, as shown in FIGS. 10 and 11, a pair of left and right spiral blades 226 that exert a lateral feed function toward the front end portion of the feeder 206 as it rotates are provided on the outer circumference of the large-diameter auger drum 227, and the feeder is provided. Two round bar-shaped scraping bodies 228 that move in and out of the auger drum 227 in the width range facing the front end entrance 206a of 206 are provided at four locations in the circumferential direction. It should be noted that even in the middle of the lateral feed region on the right side, one scraping body 228 that moves in and out of the auger drum 227 is provided.

As shown in FIG. 10,

lid plates

229 and 230 are fixed inside the auger drum 227 near both left and right ends, and a pair of

intermediate support plates

231 and 232 are provided inside the auger drum 227 at intervals. It is fixed. The rotary support shaft 233 is supported by the lid plate 230 on the right side and the intermediate support plate 232 on the right side, the connecting flange 234 key-connected to the rotary support shaft 233 is bolted to the lid plate 229 on the right side, and the rotary support shaft 233 is an auger drum. It is configured to be integrally connected to 227.

A fixed support shaft 235 is connected and fixed to the left side plate 215 in a state of being located on the coaxial core with the rotary support shaft 233, and the fixed support shaft 235 is connected and fixed to the left lid plate 229 of the auger drum 227 via a bearing 237. It is configured to rotatably support the outer fitting.

An eccentric support shaft 236 is provided in a state where the rotation is fixed to the fixed support shaft 235 by key connection, and a scraping body 228 is attached to the outer peripheral portion of the eccentric support shaft 236 via a mounting boss 238. It is rotatably mounted around the shaft core P32 along 235. Each of the plurality of scraping bodies 228 is configured so that the auger drum 227 can be slid and guided by the sliding guide body 239 provided on the auger drum 227. A pair of left and right eccentric support shafts 236 are provided, and the left and right eccentric support shafts 236 are connected by a relay shaft 240 rotatably supported by the right intermediate support plate 231.

In the lateral feed auger 218, when the rotary support shaft 233 is driven and rotated and the auger drum 227 rotates counterclockwise around the shaft core P32 of the rotary support shaft 233, each scraping body 228 follows and the eccentric support shaft 236. At this time, the distance between the eccentric support shaft 236 and the sliding guide body 239 changes depending on the rotation phase, and each scraping body 228 comes out of the auger drum 227. It rotates while retreating, and scrapes the crop into the feeder 206 while avoiding interference with the transport deck 214 and the back plate 213.

Although not shown, a large opening for assembling or removing the scraping body 228 or the like is formed at a position corresponding to the mounting position of the scraping body 228 in the auger drum 227. The holes are closed with a removable cover. The cover is detachably attached to the auger drum 227 by a plurality of bolts.

Next, the sliding guide body 239 will be described.
The sliding guide body 239 is integrally formed of a synthetic resin material. As shown in FIGS. 11, 12, and 13, the sliding guide body 239 has a narrow width along the axis direction of the auger drum 227 and a wide width along the circumferential direction, and has a long shape along the circumferential direction. Is formed in. The sliding guide body 239 is provided at a position corresponding to the opening 246 formed in the auger drum 227.

The sliding guide body 239 is formed with an insertion hole 247 for the scraping body 228 to insert the auger drum 227 in the radial direction. The sliding guide body 239 is moved inside the auger drum 227 by bolts 248 mounted from the radial outer side of the auger drum 227 at each of the locations located on both sides of the insertion hole 247 in the circumferential direction of the auger drum 227. It is fixed to the auger drum 227 together with the provided stay 249. To add an explanation, the sliding guide body 239 has a stay 249 applied from the radial inner side and an auger drum 227 in a state where the radial outer side is in contact with the inner peripheral surface of the auger drum 227. The nut 250 welded to the stay 249 and the bolt 248 are fastened and fixed in a state of being sandwiched between the two.

The fastening bolt 248 is mounted so that the auger drum 227 is inserted in the radial direction with the bolt head 248a located on the outer peripheral side of the auger drum 227. Further, between the bolt head 248a and the outer peripheral surface of the auger drum 227, the flat washer 251 abutting on the outer peripheral surface of the auger drum 227, the flat washer 251 and the bolt head 248a are attached to the shaft portion of the bolt 248. A spring washer 252 located between them is attached.

The flat washer 251 that contacts the outer peripheral surface of the auger drum 227 is composed of a wooden washer having a large flat portion so that even wood is not buried by tightening the bolt 248. By using such a washer, the contact area with the outer peripheral surface of the auger drum 227 becomes large, and even when the pressing force of the bolt 248 is applied, for example, the corners of the washer come into contact with each other. It is possible to avoid damage to the outer surface of the auger drum 227 due to a local load.

The region of the sliding guide body 239 excluding the insertion hole forming portion 253 on which the insertion hole 247 is formed is formed on a smooth arc surface along the inner peripheral surface of the auger drum 227 on the outer side surface in the radial direction. .. On the outer side surface in the radial direction, a portion corresponding to the insertion hole forming portion 253 is formed with a circular convex portion 254 that fits into the circular opening 246 formed in the auger drum 227. The convex portion 254 has a small amount of protrusion that does not protrude outward in the radial direction from the auger drum 227 in a state of being fitted to the opening 246 of the auger drum 227. As a result, since the sliding guide body 239 does not protrude outward in the radial direction from the outer peripheral surface of the auger drum 227, there is less risk of dust or the like being caught, and the convex portion 254 fits into the opening 246 to fit the auger drum. It is possible to prevent the position from shifting in the circumferential direction with respect to 227.

Bolt insertion holes 255 through which bolts 248 are inserted are formed in a state of penetrating in the radial direction at locations located on both sides of the insertion hole forming portion 253 of the sliding guide body 239 in the circumferential direction. A circular arc surface along the inner peripheral surface of the auger drum 227 is formed in a region of the side surface of the sliding guide body 239 on the inner side in the radial direction except for the insertion hole forming portion 253. Then, in this region, a fitting portion 256 into which the stay 249 is fitted is formed so as to be recessed inward. By fitting the stay 249 into the fitting portion 256, the stay 249 can be aligned with the sliding guide body 239. As a result, the bolt 248 can be easily mounted from the radial outer side of the auger drum 227 with the stay 249 fitted in the fitting portion 256.

The radial inward side of the insertion hole forming portion 253 of the sliding guide body 239 is provided with a protruding portion 257 that projects toward the radial inward side of the auger drum 227 from the stay 249. The protruding portion 257 has a substantially cylindrical shape, and is increased inward in the radial direction so as to have substantially the same width as the radial width of the region of the sliding guide body 239 excluding the insertion hole forming portion 253. It has a protruding shape. That is, the width along the radial direction of the insertion hole forming portion 253 is greatly projected so as to be approximately twice the width along the radial direction of the region excluding the insertion hole forming portion 253.

By the way, it is conceivable that the region of the sliding guide body 239 excluding the insertion hole forming portion 253 is also configured to be as wide as the protruding portion 257, but in such a configuration, the connecting distance by the bolt 248 is long. As a result, the fastening state may become loose with use, and a good working state may not be maintained.

The auger drum 227 is formed in a cylindrical shape, and as shown in FIG. 12, the connecting bolts 248 on both sides are in an oblique posture so that the radial inner side ends approach each other. The radial inward end of the bolt 248 and the radial inward end of the protrusion 257 are provided adjacent to each other. With this configuration, the protruding portion 257 can be projected inward as much as possible without changing the distance between the bolts 248 on both sides, and an insertion hole 247 suitable for sliding guidance can be formed.

The insertion hole 247 formed in the sliding guide body 239 has a narrow portion 258 that is narrow in the direction of the horizontal axis in the middle portion in the radial direction. The narrow portion 258 is formed at a position closer to the outer side in the radial direction than the stay 249. The radial outer side of the narrow portion 258 is formed so that the width along the circumferential direction becomes larger toward the outer side in the axial direction. The radial inner side of the narrow portion 258 is formed so that the width along the circumferential direction becomes larger toward the inner side in the axial direction. The width of the insertion hole 247 along the rotation axis direction of the auger drum 227 is substantially the same in all regions, and is set to a width slightly larger than the external dimensions of the scraping body 228. With this configuration, it is possible to allow a relative posture change along the circumferential direction while restricting the posture change along the axial core direction of the scraping body 228.

Next, the stay 249 will be described.
As shown in FIG. 13, the stay 249 is provided with a flat plate portion 259 having a shape that bends along the circumferential direction of the auger drum 227, and two nuts 250 for connecting in a state of being welded to the flat plate portion 259. .. The flat plate portion 259 is provided with three

flat surface portions

259A, 259B, and 259C that are bent so as to substantially follow the circumferential direction of the auger drum 227. The nut 250 is welded to the inside of the

flat surfaces

259A, 259C on both sides located on both sides in the circumferential direction among the three

flat surfaces

259A, 259B, and 259C. One of the three

flat surface portions

259A, 259B, and 259C, which is located at the center in the circumferential direction, is formed with a rising portion 260 extending along the radial direction.

The flat plate portion 259 forms the three

flat portions

259A, 259B, 259C and the rising portion 260 at once by bending the flat plate at the same time when the flat plate body is bent, without increasing the labor of processing. It is possible.

A surrounding portion 261 surrounding the protruding portion 257 of the sliding guide body 239 is formed on the stay 249, and a rising portion 260 extending along the radial direction is formed at the end portion of the surrounding portion 261 in the horizontal axis direction. That is, a large-diameter circular opening 262 is formed centering on the central flat surface portion 59B of the three

flat surface portions

259A, 259B, and 259C, and extending to the

flat surface portions

259A and 259C on both sides. The stay 249 is mounted on the inner peripheral side of the sliding guide body 239 in a state where the cylindrical protrusion 257 of the sliding guide body 239 inserts the opening 262. The surrounding portion 261 is formed by the circumference of the opening 262, and both end portions in the axial direction of one flat surface portion 259B located at the center in the circumferential direction are bent into a substantially L shape to form a rising portion 260.

Since the rising portion 260 is provided in a posture orthogonal to the flat portion 259B of the flat plate portion 259, it is easy to perform the picking work with a finger. Therefore, when the sliding guide body 239 is assembled to the auger drum 227, the stay 249 can be easily supported while sandwiching the left and right rising portions 260 by hand.

[Another Embodiment of the Second Embodiment]
(1) In the above embodiment, the sliding guide body 239 is provided on the inner peripheral side of the auger drum 227, but instead of this configuration, for example, as shown in FIG. 14, the sliding guide body 239 is provided. The configuration may be provided on the inner peripheral side of the auger drum 227. In this embodiment, the sliding guide body 239 is provided on the outer peripheral side of the auger drum 227, and the stay 249 having the same configuration as that of the above embodiment is provided on the inner peripheral side of the auger drum 227. Then, the sliding guide body 239 is fixed by fastening the bolt 248 mounted from the outer side of the auger drum 227 and the nut 250 welded to the stay 249. The protruding portion 257 of the sliding guide body 239 protrudes inward in the radial direction of the auger drum 227 from the stay 249 through the opening 246 formed in the auger drum 227.

(2) In the above embodiment, the narrow portion 258 is formed in the middle portion in the radial direction of the insertion hole 247, and the narrow portion 258 is formed at a position closer to the outer side in the radial direction than the stay 249. However, instead of this configuration, the narrow portion 258 may be formed at the same position as the stay 249 or at a position closer to the inward side in the radial direction than the stay 249. Further, the insertion holes may be configured to have the same diameter along the radial direction without providing such a narrow portion, or the inner end portion or the outer end portion may be configured to have the smallest diameter. To

(3) In the above embodiment, one flat surface portion of the flat plate portion of the stay 249 is provided with rising portions at both end portions in the axial direction, but instead of this configuration, it rises over a plurality of flat surface portions. A configuration may be provided in which a portion is provided, or a configuration in which a rising portion is provided at one end in the axial direction. Further, the rising portion 260 may not be formed.

(4) In the above embodiment, the harvester applied to the ordinary combine is shown as an example of the harvester, but other types of harvesters such as a corn harvester may be used.

(5) The present invention can be applied to a harvester such as a conventional combine harvester or a corn harvester in which harvested crops are gathered in the lateral width direction of the machine by a horizontal auger and then transported to the rear side.

[Third Embodiment]
Next, the third embodiment will be described with reference to FIGS. 15 to 22.

The embodiment for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F is the "front side of the machine", the direction of the arrow B is the "rear side of the machine", the direction of the arrow L is the "left side of the machine", and the direction of the arrow R is the "right side of the machine".

[Overall composition of combine harvester]
15 and 16 show a head-feeding combine (corresponding to the “combine” according to the present invention). The combine is provided with a traveling machine 301. The traveling machine body 301 is provided with a body frame 302 and a crawler traveling device 303. In front of the traveling machine 301, a cutting section 304 for cutting the planted grain culm is provided. The cutting unit 304 is provided with a scraping reel 305 for scraping the planted culm, a cutting blade 306 for cutting the planted culm, and a scraping auger 307 for scraping the harvested culm.

A threshing device 308 is provided to thresh all the culms of the harvested culms. A feeder 309 for transporting the harvested culm toward the threshing device 308 is provided across the cutting section 304 and the threshing device 308. On the right side of the threshing device 308, a grain tank 310 for storing the grains obtained by the threshing process is provided side by side with the threshing device 308. The grain tank 310 is configured to swing open and close around a swing axis Z13 extending in the vertical direction. A grain discharge device 311 for discharging grains in the grain tank 310 is provided. An operation unit D3 is provided in front of the grain tank 310.

[Threshing device]
As shown in FIGS. 17 and 18, the threshing device 308 is provided with a threshing section 312 for threshing the harvested grain culm and a threshing section 312 below the threshing section 312, which is obtained by threshing the harvested grain culm. A sorting unit 313 for sorting the threshing grains is provided. The threshing section 312 includes a handling cylinder 314 that can rotate around the rotation axis Y13 extending along the front-rear direction of the machine, a handling chamber 315 provided with the handling cylinder 314, and a receiving net 316 that leaks the threshed product. Is provided.

The sorting unit 313 includes a swing sorting device 317 that swings and sorts the threshed product, a wall insert 318 that blows a sorting wind to the threshed product, and the first that collects the first product (single grain, etc.). A collection unit 319 and a second collection unit 320 for collecting the second product (grains with branch stems, etc.) are provided. The first collection unit 319 is provided with the most horizontal screw 321 for transporting the first object to the right. The second collection unit 320 is provided with a second horizontal screw 322 for transporting the second object to the right.

Next to (next to the right) the threshing device 308 are the first vertical transport device 323 that transports the first product sorted by the sorting unit 313 toward the grain tank 310, and the second sorted by the sorting unit 313. A second reduction device 324 for reducing the product to the sorting unit 313 is provided. The first item from the most horizontal screw 321 is conveyed upward by the most vertical transfer device 323 and stored in the grain tank 310. The second product from the second horizontal screw 322 is conveyed upward by the second reduction device 324, discharged from the transfer end portion of the second reduction device 324, and reduced to the front portion of the swing sorting device 317. It will be.

On the right side of the threshing section 312, a right wall 325 (corresponding to the "horizontal side wall" according to the present invention), an upper frame 326, a lower frame 327, and a vertical frame 328 are provided. The upper edge of the right side wall 325 is supported by the upper frame 326. The lower edge of the right side wall 325 is supported by the lower frame 327. The vertical frame 328 extends in the vertical direction over the upper edge of the right side wall 325 and the lower edge of the right side wall 325.

An opening 325a through which the second product from the second reduction device 324 passes is formed on the lateral side wall (right side wall 325) of the threshing section 312 on the side where the second reduction 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 a side view, and overlaps with the most vertical transport device 323.

As shown in FIGS. 17 to 19, a guide member 329 for guiding the second object from the second reduction device 324 toward the opening 325a is provided. The guide member 329 is connected to the transport end portion and the opening 325a of the second reduction device 324. The guide member 329 is arranged in front of the transfer end portion of the second reduction device 324 so as to overlap the most vertical transfer device 323 in a side view.

A vertical wall 330 is provided between the transport end portion of the second reduction device 324 and the guide member 329. The vertical wall 330 extends in the vertical direction over the upper edge of the right wall 325 and the lower edge of the right wall 325. The vertical wall 330 is supported by the right wall 325 in a state of projecting from the right wall 325 toward the right. The vertical wall 330 is formed with an opening 330a (see FIG. 22) for communicating and connecting the transfer end portion of the second reduction device 324 and the inside of the guide member 329. The transport end portion of the second reduction device 324 and the inside of the guide member 329 are communicatively connected via an opening 330a. Bent portions 330b are formed on the left edge portion, the right edge portion, and the lower edge portion of the vertical wall 330, respectively.

[Guide member]
As shown in FIGS. 20 to 22, the guide member 329 is formed so as to protrude to the lateral side (right side) of the threshing portion 312 from the right side wall 325 and to open toward the rear. The guide member 329 is formed in the above-mentioned shape by bending one plate-shaped member. The portion of the rear end opening of the guide member 329 other than the portion corresponding to the opening 330a is closed by the vertical wall 330. The guide member 329 is configured to be detachable from the right side wall 325 and the vertical wall 330. That is, the guide member 329 is configured to be removable from the opening 325a.

The guide member 329 is provided with 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 approach the right side wall 325 toward the front side in a plan view. The second inclined portion 333 is inclined downward to the left in the rear view (see FIG. 22).

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

A rear bent portion 335 (corresponding to the "bent portion" according to the present invention) is formed at the trailing edge portion of the guide member 329. The rear bent portion 335 is formed at the trailing edge portion of the upper surface portion 331, the trailing edge portion of the first inclined portion 332, and the trailing edge portion of the second inclined portion 333. The rear bent portion 335 is detachably fastened by bolts B3 and nuts N3 in a state of being face-to-face with the vertical wall 330. In the present embodiment, there is only one fastening point for the rear bent portion 335 by the bolt B3. The bolt B3 is removably fastened to the vertical wall 330 at a portion of the rear bent portion 335 corresponding to the trailing edge portion of the second inclined portion 333. 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 the bolt B3 which is fastened from the direction parallel to the right side wall 325.

The upper edge of the guide member 329 is provided with a locking portion 336 that is inserted into the upper edge of the opening 325a to lock the right wall 325 along the upper edge of the opening 325a. There is. The locking portion 336 is composed of a bent portion formed on the left edge portion of the upper surface portion 331. The locking portion 336 is located near the upper frame 326 in a state of being inserted into the upper edge of the opening 325a (a state of being locked along the upper edge of the opening 325a of the right wall 325). There is. The locking portion 336 includes an insertion portion 336a inserted into the upper edge portion of the opening 325a, 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 325a. Is provided. The front and rear edge portions 336b are distributed and arranged in the front and rear with respect to the insertion portion 336a.

Of the right wall 325, the front and rear edges 336b are inserted into the upper edge of the opening 325a with the insertion portion 336a along the right side of the portion of the right wall 325 along the upper edge of the opening 325a. A portion along the upper edge portion of the opening portion 325a is sandwiched between the insertion portion 336a and the front and rear edge portions 336b. In this way, the insertion portion 336a is inserted into the upper edge portion of the opening 325a, so that 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 the "bent portion" according to the present invention) is formed at the lower edge portion of the guide member 329. The lower bent portion 337 is formed at the lower edge portion of the second inclined portion 333. The lower bent portion 337 is detachably fastened by bolts B3 and nuts N3 in a state of being face-to-face with the right side wall 325. In the present embodiment, there are two fastening points of the lower bent portion 337 by the bolt B3. The bolt B3 projects to the right from the right wall 325. That is, the lower bent portion 337 is detachably fastened to the right side wall 325 by the bolt B3 which is fastened from the direction perpendicular to the right side wall 325.

[Another Embodiment of the Third Embodiment]
(1) In the above embodiment, the locking portion 336 is provided on the upper edge portion of the guide member 329. However, a "bent portion" according to the present invention is formed on the upper edge portion of the guide member 329, and the "bent portion" is detachably fastened by bolts B3 and nuts N3 in a state of being faced with the right side wall 325. It may have been done.

(2) In the above embodiment, the front bent portion 334 is detachably fastened by bolts B3 and nuts N3 in a state of being face-to-face with the right side wall 325. However, the "engagement portion" according to the present invention may be provided on the front edge portion of the guide member 329.

(3) In the above embodiment, the lower bent portion 337 is detachably fastened by bolts B3 and nuts N3 in a state of being face-to-face with the right side wall 325. However, the "engagement portion" according to the present invention may be provided on 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 by a bolt B3 that is fastened from a 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 that is 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 a bolt B3 that is fastened from a 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 that is fastened from a direction substantially parallel to the right side wall 325.

(6) In the above embodiment, the second reduction device 324 is provided on the right side of the threshing device 308. However, the second reduction device 324 may be provided on the left side of the threshing device 308.

(7) The present invention can be used for head-feeding combine harvesters as well as head-feeding combine harvesters.

[First Embodiment]
8 Mowing frame 9 Scraping reel 10 Cutting device 11 Ogre 12 Weeding tool 15 Side wall 33 Bottom part (bottom surface)
34a Lower front (the lower part of the weeding tool on the front side of the bulge)
34b Rear lower part (lower part)
34c Front end 34d Rear end 43 Proud part 43a Front end 43b Rear end 43c Top 46 Guide part 46a Front end 46b Rear end 47 Guide part 47a Front end 47b Rear end 48 Separate guide 48a Front end 49 Separate guide Part 49a Front end A1 Front position A2 Last position B1 Virtual line L1 Length L2 Length P1 Jikushin P3 Jikushin [Second embodiment]
206 Feeder 218 Horizontal feed auger 227 Auger drum 228 Scraping body 239 Sliding guide body 248 Bolt 249 Stay 253 Insertion hole forming part 257 Protruding part 258 Narrow part 259 Flat plate part 259B Flat part 260 Rising part 261 Enclosing part form〕
308 Threshing device 312 Threshing section 313 Sorting section 324 Second reduction device 325 Right side wall (horizontal side wall)
325a Opening 329 Guide member 332 First inclined part (tilted part)
334 Front bend (bend)
335 Back bend (bend)
336 Locking part 337 Lower bent part (Bent part)
B3 bolt (fastener)

Claims

A cutting frame with right and left side walls,
A cutting device provided on the cutting frame so as to be located between the right and left side walls to cut crops in the field.
A weeding tool provided on the side wall so as to project forward from the cutting device is provided.
The side wall and the weeding tool are configured to weed the crops in the field.
A flat bottom surface is provided on the side wall adjacent to the cutting device.
A harvester provided with a bulging portion at the lower part of the weeding tool, which bulges below the virtual line including the bottom surface in a side view.
The harvester according to claim 1, wherein the bulging portion extends from the lower part of the weeding tool to the bottom surface along the lower part of the side wall.
The harvester according to claim 1 or 2, wherein the lower part of the weeding tool is located on the virtual line in a state where the bulging portion is removed.
The bottom of the front portion of the bulging portion is formed in an inclined shape that descends backward.
The portion of the lower part of the weeding tool on the front side of the bulging portion is formed in a downward inclined shape.
According to any one of claims 1 to 3, the front end portion of the bulging portion and the rear end portion of the lower portion of the weeding tool on the front side of the bulging portion are smoothly continuous. The harvester described.
The bulging portion is formed in an inverted triangular shape that bulges downward from the virtual line in a side view.
The length in the anteroposterior direction extending from the top of the bulge to the rear end of the bulge is longer than the length in the anteroposterior direction extending from the top of the bulge to the front end of the bulge. The harvester according to any one of claims 1 to 4, which is set in the one.
The bulging portion is formed in an inverted triangular shape that bulges downward from the virtual line in a side view.
A guide portion for guiding the crops in the field toward the left and right central portions of the cutting frame is provided on the inner surface of the weeding tool in the cutting width direction.
The harvester according to any one of claims 1 to 5, wherein the guide portion extends rearward along the inner surface from a position corresponding to the top of the bulging portion.
An auger is provided that is rotationally driven around the axis along the left-right direction to laterally feed the crops cut by the cutting device.
The harvester according to claim 6, wherein the rear end portion of the guide portion is extended to a position between the rotation locus of the outer peripheral portion of the auger and the cutting device in a side view.
The harvester according to claim 6 or 7, which is provided with a separate guide unit for guiding the crop toward the left and right center portions of the cutting frame.
The harvester according to claim 8, wherein the front end portion of the separate guide portion is located on the rear side of the front end portion of the guide portion in a side view.
It is equipped with a scraping reel that is rotationally driven around the axis along the left-right direction to scrape the crops in the field toward the cutting device.
The scraping reel has a front position in which the front end of the outer peripheral portion of the scraping reel is located in front of the front end of the weeding tool and a front end of the scraping reel behind the front end of the weeding tool. The harvester according to any one of claims 1 to 9, which can be repositioned back and forth over the last position located on the side.
It is equipped with a horizontal feed auger that transports the harvested culms in the width direction of the machine, and a feeder that transports the harvested culms that are transferred by the horizontal feed auger and then sent out to the rear of the machine.
To the horizontal feed auger
A cylindrical auger drum that is provided with spiral blades for transferring culms on the outer circumference and rotates around the horizontal axis core,
With the rotation of the auger drum, a scraping body that rotates integrally while moving out of the auger drum and sends the cut grain culm to the feeder.
Sliding provided at a position corresponding to the opening formed in the auger drum, an insertion hole through which the scraping body is inserted is formed, and the scraping body is slidably guided to move out of the auger drum. Guide body and
A stay for attaching the sliding guide body to the auger drum is provided.
The stay is provided inside the auger drum and
A harvester in which the insertion hole forming portion of the sliding guide body in which the insertion hole is formed is provided with a protrusion that protrudes inward in the radial direction of the auger drum from the stay.
The harvester according to claim 11, wherein the insertion hole is formed with a narrow portion having a narrow width in the direction of the horizontal axis in the middle portion in the radial direction.
The harvester according to claim 12, wherein the narrow portion is formed at a position closer to the outer side in the radial direction than the stay.
The sliding guide body is attached to the auger drum together with the stay by bolts mounted from the radial outer side of the auger drum at each of the locations located on both sides of the insertion hole in the circumferential direction of the auger drum. Fixed,
The harvester according to any one of claims 11 to 13, wherein the radial inward end of the bolt and the radial inward end of the protrusion are provided adjacent to each other.
A surrounding portion surrounding the protruding portion is formed on the stay.
The harvester according to any one of claims 11 to 14, wherein a rising portion extending along the radial direction is formed at an end portion of the surrounding portion in the horizontal axis direction.
The stay is provided with a flat plate portion having a shape that bends along the circumferential direction of the auger drum.
The harvester according to claim 15, wherein the rising portion is provided on one flat surface portion of the flat plate portion.
A threshing apparatus having a threshing unit for threshing the harvested culm and a sorting unit provided below the threshing unit for selecting the grains obtained by threshing the harvested culm.
A second reduction device provided next to the threshing device and reducing the second product selected by the sorting unit to the sorting unit.
An opening formed in the lateral side wall of the threshing section on the side where the second reduction device is located and through which the second product from the second reduction device passes.
A guide member which is connected to the transport end portion of the second reduction device and the opening and guides the second object from the second reduction device toward the opening is provided.
The guide member is a combine that is detachably attached to the opening.
17. Claim 17, wherein a locking portion is provided at the edge of the guide member so as to be inserted into the edge of the opening to lock the lateral side wall along the edge of the opening. The combine described.
A bent portion is formed at the edge of the guide member.
The combine according to claim 17 or 18, wherein the bent portion is detachably fastened by a fastener in a state of being face-to-face with the lateral side wall.
The upper edge of the guide member is provided with a locking portion that is inserted into the upper edge of the opening to lock the lateral side wall along the upper edge of the opening.
A bent portion is formed on the lower edge portion of the guide member.
The combine according to claim 17, wherein the bent portion is detachably fastened by a fastener in a state of being face-to-face with the lateral side wall.
The guide member is arranged in front of the transport end portion of the second reduction device.
The guide member has an inclined portion that is inclined so as to approach the lateral side wall toward the front side in a plan view.
Bent portions are formed on the front and rear edges of the inclined portion, respectively.
The bent portion on the front side is detachably fastened by a fastener that is fastened from a direction perpendicular to or substantially perpendicular to the lateral side wall.
The combine according to any one of claims 17 to 20, wherein the bent portion on the rear side is detachably fastened by a fastener fastened from a direction parallel to or substantially parallel to the lateral side wall.