WO2020080265A1

WO2020080265A1 - Combine

Info

Publication number: WO2020080265A1
Application number: PCT/JP2019/040111
Authority: WO
Inventors: 和明永翁; 哲治永田; 雅志高木
Original assignee: 株式会社クボタ
Priority date: 2018-10-16
Filing date: 2019-10-10
Publication date: 2020-04-23
Also published as: CN112888304B; CN112888304A; KR20210071028A; JP7101587B2; JP2020061971A

Abstract

[Problem] To provide a combine capable of effectively performing a re-sorting process on a second crop. [Solution] In the present invention: on a side wall, on which the second crop return device 27 is installed, among the left and right side walls, a second crop discharge port 27D of a second crop return device 27 is provided to a lateral wall part 35Ra which is positioned higher than a workpiece feeding surface 20A of a rocking sorting device 20; a flow-down guider 60 which guides the second crop to the rocking sorting device 20 is provided in a second crop flow-down passage spanning from the second crop discharge port 27D to the rocking sorting device 20 in a threshing device 10; the flow-down guider 60 is provided at a further inner side of the threshing device 10 than the lateral wall part 35Ra and at a place overlapping the workpiece feeding surface 20A when viewed in a plan view, and is formed on a downward inclination surface 61 which guides the second crop toward the upper side in the workpiece feeding direction.

Description

Combine

INDUSTRIAL APPLICABILITY The present invention is provided with a threshing processing unit that performs a handling process by a handling cylinder and leaks and sorts an object to be treated by a receiving net, and a threshing processing unit that is provided below the threshing treatment unit and sorts a processed object that leaks from the receiving net The present invention relates to a combine provided with a threshing device having a selection processing unit.

In such a combine, for example, in a threshing device, a second product is lifted by a second reducing device (second reducing and lifting device in Patent Document), and a downflow guide body having an inclined guide surface (in Patent Document: A technique is known in which the second product is returned to the swing sorting device of the sorting processing unit while being guided by a communication member) (see Patent Document 1).

Japanese Patent Laid-Open No. 2010-263854 (see paragraphs “0035”, “0037”, “FIG. 4” to “FIG. 6”)

In the combine shown in Patent Document 1 described above, the communication member that guides the second product discharged from the discharge port of the second reducing device toward the inside of the sorting processing unit is provided on the discharge port of the second reducing device and the threshing side wall. It is provided in a range extending over the formed opening.
If such a communication member is provided, the second product discharged from the discharge port of the second reduction device can be supplied to the second product without requiring a large-scale return conveyor for directing the second product to the upstream side of the sorting processing unit. This is advantageous in that the swing sorting device can be returned toward the upstream side to effectively perform the re-sorting process, and the structure can be simplified and the device can be downsized.
However, in this structure, the action of throwing the second object forward along with the rotation of the rotary blade provided in the discharge port of the second reducing device does not uniformly act in the entire opening range of the discharge port. In other words, in the rotation angle range of the rotary blade, in the state where the blade surface faces the front or the direction close to the front, the throwing action of the second object by the rotary blade effectively acts in the forward direction. If it greatly deviates from the front or a direction close to the front, the rotating blade's secondary object throwing action hardly acts in the forward direction, resulting in a situation of spilling downward from the discharge port near the discharge port. It cannot be returned to the upstream side of the device.
Therefore, most of the second product discharged from the discharge port of the second reducing device can be guided to the communicating member and returned to the upstream side of the rocking and sorting device for effective re-sorting processing. There is room for improvement in the point that it is difficult to sufficiently apply the re-sorting process by the swing sorting device to some of the second articles that have spilled down from the discharge port to the vicinity of the discharge port.

Therefore, the present invention intends to provide a combine capable of more effectively performing the re-sorting process of the second product.

The combine of the present invention is a threshing processing unit that performs a handling process by a handling cylinder and sifts and sorts an object to be processed by a net, and an object to be processed that is provided below the threshing unit and leaks from the net. And a threshing device having a sorting processing unit for sorting, and the sorting processing unit includes a swing sorting device that swing-sorts while transferring an object to be processed backward, and a swing sorting device below the swing sorting device. A first item collecting section provided for collecting the first item sorted by the swing sorting device; and a swing sorting device provided below the swing sorting device and behind the first item collecting unit. A second product recovery unit for recovering the second product sorted by, and a second reduction device connected to the second product recovery unit for pumping the second product and discharging the second product above the swing selection device. , And the second discharge port of the second reducing device is Of the left and right side walls of the grain device, the side wall on the side where the second reducing device is installed is provided on the side wall portion located above the workpiece transfer surface of the rocking sorting device, A downflow guide body for guiding a second product toward the swing sorting device is provided in a second product drop path from the second discharge port inside to the swing sorting device, and the downflow guide body, It is provided on the inner side of the threshing device with respect to the lateral side wall and at a position overlapping with the object transfer surface in the swing sorting device in plan view, and a second object is provided toward the upper side of the object transfer direction. It is formed on the inclined surface of the front to descend.

According to this configuration, a downflow guide body that guides the second object toward the swing sorting device is provided in the second product drop path from the second product discharge port inside the threshing device to the swing sorting device. There is. The flow-down guide is provided on the inner side of the threshing device with respect to the side wall portion and at a position overlapping with the object transfer surface of the swing sorting device in plan view, and is directed toward the upper side of the object transfer direction. It is formed on the sloping front surface that guides the second object.
Therefore, the second guide spilled down from the second discharge outlet to the vicinity of the second discharge outlet can be received by the flow-down guide body. Then, the received second object can be returned to the upstream side of the swing selecting device by utilizing the front descending inclined surface of the downflow guide body. This makes it possible to more effectively perform the re-sorting process of the second product.

In the combine of the present invention, the downflow guide body is provided only in a region on the side where the second product discharge port is provided, in the left-right width direction of the threshing device, in the upper region of the swing sorting device. Is preferable.

According to this configuration, the flow-down guide body existing at a position overlapping with the object transfer surface of the swing sorting device in plan view has a relatively small area compared to the area of the object transfer surface of the swing sorting device. And is present only in the region on the side where the second object discharge port is provided. Therefore, the object to be processed dropped and supplied from the threshing processing unit is not received in a wide range such as the entire width of the object transfer surface. Therefore, there is no risk of increasing the processing load such as receiving the object to be processed with the entire width of the object transfer surface and returning the entire object to the upper side in the object transfer direction.
However, it tends to occur frequently in the area on the side where the second object discharge port is provided, but it accurately receives the second object that has spilled down near the second object discharge port and is good at transferring the object to be processed. It is easy to return it to the side and surely perform the re-sorting process of the second product.

In the combine harvester according to the present invention, the swing selecting device is configured to be wider than the receiving net in the left-right width direction of the threshing device, and the flow-down guide body is separated from the existing position of the receiving net in a plan view. It is preferable that it is provided at a position.

According to this configuration, since it is difficult for the falling object to be processed from the receiving net to be directly placed on the flow-down guide provided at a position deviating from the location where the receiving network exists, the falling object to be processed from the receiving net is It is easy to more effectively exert the flow-down guide function of the second object in a state in which there is little risk of returning the second object to the upper side in the object transfer direction.

In the combine harvester of the present invention, the rocking sorting device is provided with a chaff sheave that sorts and leaks grains in the object to be processed while transferring the object to be processed backward, and the downflow guide body has a lower end thereof. Is preferably disposed so as to be located between the receiving net and the workpiece transfer surface of the chaff sheave in a side view.

According to this configuration, since the lower end of the downflow guide is higher than the workpiece transfer surface of the chaff sheave, the second object falling from the lower end of the downflow guide moves to the upper side of the object transfer direction. After that, it is placed on the transfer surface of the chaff sheave. As a result, by effectively utilizing the workpiece transfer surface by the chaff sheave in a range overlapping with the flow-down guide in a plan view, the second sorting process is performed again for the longest possible distance.

In the combine of the present invention, the rear upper portion in the workpiece transfer direction in the workpiece transfer surface of the chaff sheave is provided with an auxiliary sorting plate for receiving the workpieces discharged near the rear portion of the threshing processing unit, It is preferable that the flow-down guide body is provided side by side with the auxiliary sorting plate.

According to this configuration, since the auxiliary sorting plate that receives the object to be processed discharged near the rear part of the threshing processing section is provided at the rear upper part in the object transfer direction on the object transfer surface of the chaff sheave. The object to be processed discharged near the rear part of the threshing processing section can be efficiently sorted by the auxiliary sorting plate.
Since the flow-down guide body is provided side by side with the auxiliary sorting plate, for example, as compared with the case where the flow-down guide body is provided on the front side or the rear side of the auxiliary sorting plate in the workpiece transfer direction, the chaff sheave It is easy to avoid a decrease in processing efficiency on the object transfer surface. In other words, it is possible to reduce the degree to which the second product, which has a relatively high grain mixing ratio, mixes with the processed product discharged near the rear of the threshing processing unit, which has a significantly low grain mixing ratio. It is easy to relatively efficiently perform the sorting process.

In the combine of the present invention, it is preferable that the auxiliary sorting plate and the flow-down guide body are integrally formed by a common support frame body.

According to this configuration, it is possible to support the flow-down guide body by using the support frame body that supports the auxiliary selection plate, and the structure can be simplified.

It is a left side view showing a self-removing combine. It is a top view which shows a self-removing combine. It is a left side view which shows the inside of a threshing device typically. It is a front view showing the upper part inside a threshing device. It is a right view which shows the upper part of a threshing apparatus. It is a horizontal direction sectional view showing the inside of a threshing device. It is a perspective view which shows a sheave case. It is a top view which shows a rotation sensor. It is the IX-IX sectional view taken on the line in FIG. It is an exploded perspective view showing the bottom of the second thing collection part. It is sectional drawing which shows the bottom part of the 2nd thing recovery part. It is explanatory drawing which shows the mounting state of the bearing holder in a screw shaft.

Hereinafter, an embodiment of a self-removing combine as an example of a combine according to the present invention will be described with reference to the drawings.
The front-rear direction and the left-right direction in the description of this embodiment are defined as follows unless otherwise specified. In other words, the forward traveling direction (see arrow F in FIG. 1 ) is “forward” and the backward traveling direction (see arrow B in FIG. 1 ) is “forward” during work traveling of the self-removing combine to which the present invention is applied . "Rear", the direction corresponding to the right side (see arrow R in Fig. 2 ) based on the forward facing posture in the front-rear direction is "right", and the direction corresponding to the left side (see arrow L in Fig. 2 ) is "left". It is. Therefore, the lateral direction of the machine body corresponds to the lateral width direction of the traveling machine body.

[Overall structure of combine]
The self-removing combine shown in FIGS . 1 and 2 includes a machine body frame 1 and a traveling device 2 that supports the machine body frame 1. A boarding operation unit 3 is provided on the right side of the front of the machine body. The boarding operation unit 3 is provided with a steering operation tool (not shown) and a driver seat 4, and a cabin 5 that covers the steering operation tool and the driver seat 4. An engine (not shown) is provided below the driver's seat 4.

In front of the boarding operation unit 3, a harvesting unit 6 for harvesting crops in the field is provided. Behind the boarding operation unit 3, a grain storage tank 7 that stores grains and a grain discharge device 8 that discharges the grains in the grain storage tank 7 are provided. On the left side of the machine body, a feed chain 9 for sandwiching and conveying the cut culms is provided. On the left side of the grain storage tank 7, a threshing device 10 for threshing the cut grain culms conveyed by the feed chain 9 is provided. On the rear side of the threshing device 10, a straw processing device 18 is continuously provided. The straw processing device 18 receives the threshing-processed straw from the feed chain 9 and nips and conveys it to the rear. A straw cutting device 28 that cuts the straw conveyed by the straw processing device 18 with a cutter 29 is provided below the portion on the conveyance end side of the straw processing device 18.

[Harvest Department]
The harvesting section 6 is configured to have a multiple-row cutting specification (for example, a six-row cutting specification). The harvesting unit 6 includes a plurality (for example, seven) of weeding tools 13, a plurality (for example, six) of raising devices 14, a cutting device 15, and a lifting and conveying device 16. The weeding tool 13 weeds a crop in the field. The raising device 14 causes the crop to be cultivated. The cutting device 15 cuts the caused crop. The lifting / conveying device 16 conveys backward toward the threshing device 10 while sandwiching the plant base side of the trimmed stem culm and changing the posture of the tip end sideways in the sideways direction.

[Thrusher]
As shown in FIG. 3 , in the threshing device 10, a threshing processing section C1 for treating the harvested culm by the handling drum 11 and sorting down the objects to be treated by the receiving net 12, and below the threshing processing section C1. And a sorting processing unit C2 that sorts the object to be processed leaked from the receiving net 12.

The threshing processing section C1 includes a handling cylinder 11 in a handling chamber 17 formed in an upper portion, and a receiving net 12 below the handling barrel 11.
The handling cylinder 11 is rotatable around a rotation axis Y1 extending in the machine longitudinal direction. The receiving nets 12 are provided so as to face each other on the lower half side of the handling cylinder 11 about a half circumference. A dust exhaust fan 19 that discharges dust to the outside is provided behind the handling chamber 17.

The sorting processing unit C2 is located below the threshing processing unit C1.
In the sorting processing section C2, a swing sorting device 20 that swings and transfers the objects to be processed while sieving and sorting, a Karako 21 that sends sorting air to the swing sorting device 20, and a swing sorting device 20. The first item collecting section 22 for collecting the first item (single-grained grain etc.) selected by the above, and the swing selecting apparatus provided below the swinging sorting apparatus 20 and behind the first thing collecting section 22. A second product collecting unit 23 that collects the second product (grains with branch stems, etc.) sorted by 20.

The first-product collecting section 22 is provided with a first screw 24 that conveys the first-product grains to the right. At the right end of the first screw 24, a grain lifting device 25 that transports the grain of the first grain to the grain storage tank 7 is linked and linked.
The second product recovery section 23 is provided with a second screw 26 which conveys the second product grains to the right. To the right end of the second screw 26, a second reducing device 27, which reduces the grain of the second product to the swing selecting device 20 (as a component of the second product reducing path), is interlockingly connected.

As shown in FIGS. 3 to 7 , wall portions 30 are provided at the front end portion and the rear end portion of the handling chamber 17, respectively. The front wall portion 30 constitutes a front wall portion of the handling room 17. The rear wall portion 30 constitutes a rear wall portion of the handling chamber 17.

The front and

rear wall portions

30, 30 each include a movable wall 31 and a fixed wall 32. The handling barrel 11 is rotatably supported by the front movable wall 31 and the rear movable wall 31 via a handling shaft 11a.
A transmission shaft 34 for transmitting the power of the engine to the straw cutting device 28 is rotatably provided between the front fixed wall 32 and the rear fixed wall 32.

The movable wall 31 and the fixed wall 32 are connected via a connecting arm 33. That is, one end side of the connecting arm 33 is supported by the transmission shaft 34 so as to be relatively rotatable around the swing axis Y2 that matches the axis of the transmission shaft 34. The other end of the connecting arm 33 is fixed to the movable wall 31, whereby the movable wall 31 is vertically swingable around a swing axis Y2 extending in the machine longitudinal direction via the connecting arm 33. Will be supported by.

The right side portion of the threshing device 10 is configured by the right side wall 35R. The right side wall 35R extends to the rear end of the machine body. Although not shown, a portion of the right side wall 35R on the rear side of the rear side wall portion 30 is inclined so as to be located on the right side toward the rear side along the exhaust straw conveying direction by the straw processing device 18. It is configured to include a wall portion.
The left side portion of the threshing device 10 is configured by a left side wall 35L provided below the feed chain 9.

As shown in FIG. 4 , front and

rear frames

40L and 40R extending in the machine front-rear direction are provided on both left and right sides of the threshing device 10, respectively. The front-rear frame 40L on the left side extends to the rear side of the rear end of the handling cylinder 11. The front-rear frame 40L on the left side is configured by a square pipe having a substantially square cross section. The front-rear frame 40R on the right side extends beyond the rear end of the handling cylinder 11 to the rear side. The front-rear frame 40R on the right side supports the front fixed wall 32, the rear fixed wall 32, and the right side wall 35R. The front-rear frame 40R on the right side is configured by a square pipe whose cross-sectional shape is substantially rectangular (horizontally long rectangular).

As shown in FIGS. 4 and 5 , a handling barrel cover 42 that covers the handling barrel 11 from above and an upper right portion cover 43 that is located right next to the handling barrel cover 42 are provided on the upper portion of the handling chamber 17. Has been.
The handling case cover 42 extends to the rear side of the rear end of the handling case 11. The right upper cover 43 extends further to the rear side than the rear end of the handling cylinder 11. The right upper cover 43 is supported by the right-side front-rear frame 40R so as to be vertically swingable via a hinge 43a having a swing axis extending in the machine front-rear direction.

The handling barrel cover 42 is supported by the handling barrel frame 44. The handling barrel frame 44 includes a pair of front and rear movable walls 31 and a left and right frontward-facing frame 40L. The front-rear frame 40L on the left side is located outside the machine body in the machine body left-right direction of the handling barrel frame 44.
The handling body frame 44 swings up and down around the swing axis Y2 of the transmission shaft 34 extending in the machine front-rear direction via the front movable wall 31, the rear movable wall 31, the connecting arm 33, and the transmission shaft 34. It is supported by the fixed wall 32 as possible.

The handling barrel frame 44 is supported by an electric hydraulic cylinder 45 so as to be vertically swingable. The electric hydraulic cylinder 45 is provided across the movable wall 31 on the rear side of the handling chamber 17 and the fixed wall 32 on the rear side. Therefore, when the electro-hydraulic cylinder 45 is extended, the handling barrel frame 44 is raised, and at the same time, the handling barrel 11 supported by the movable wall 31 is raised and rocked to open the inside of the handling chamber 17.
As shown in FIGS. 4 to 6 , the electric hydraulic cylinder 45 is disposed on the front side of the rear wall portion 30 of the handling chamber 17 and on the inner side of the handling chamber 17 with respect to the right side wall 35R.

[Second product reduction route]
A second product reducing route R1 including a second reducing device 27 exists as a moving route of the second product from the right end portion of the second screw 26 corresponding to the end portion in the grain conveying direction to the swing sorting device 20.
The second reducing device 27 is located rearward of the wall portion 30 on the rear side of the handling chamber 17, and includes a vertically oriented cylindrical portion 27A and a vertical screw 27B provided therein. The inside of the cylindrical portion 27A serves as a delivery path for the second product. The upper end of the vertical screw 27B is provided with a rotary blade 27C for horizontally ejecting the second object fed by the vertical screw 27B from the second object discharge port 27D at the upper end.

The second reducing device 27 is arranged such that the second discharge port 27D is located substantially on the same plane as the rear wall 30 of the handling chamber 17 in the front-rear direction. Then, of the left and right side walls of the threshing device 10, in the right side wall 35R on the side where the second reducing device 27 is installed, the side wall part 35Ra located above the workpiece transfer surface 20A of the rocking sorting device 20. The second object discharge port 27D is provided so as to open.
A bulging guide portion 36 that bulges rightward and outward from the other portion of the right side wall 35R is provided at a portion of the lateral side wall portion 35Ra that is connected to the second object discharge port 27D. In the bulging guide portion 36, the inner and outer inclined guide surfaces 36a that bulge laterally outward toward the side closer to the second object discharge port 27D, and the lower as the distance from the second object discharge port 27D approaches the right side wall 35R. A downward slope 36b is formed.

Therefore, the second object horizontally ejected from the second object outlet 27D is guided by the inner and outer inclined guide surfaces 36a and the downward inclined surface 36b of the swelling guide portion 36 and is provided in the sorting processing section C2. It is discharged to the lower inside of the sorting section C2 so as to be placed on the workpiece transfer surface 20A of the swing sorting device 20.
The second object drop path from the second object discharge port 27D to the object transfer surface 20A of the swing selecting device 20 and the hoisting path existing inside the cylindrical portion 27A are the second screw 26's The second product reducing route R1 is formed from the right end portion corresponding to the end portion in the grain transport direction to the swing sorting device 20.

[Oscillating sorter]
The swing selection device 20 is configured as follows.
As shown in FIGS. 3 and 8 , the swing sorting device 20 includes a frame-shaped sheave case 50 formed in a rectangular shape in a plan view, a first Glen pan 51, a plurality of first sieve lines 52, and a chaff sheave 53. A stroll rack 54, a second Glen pan 55, a Glen sieve 56, an auxiliary sorting plate 57, and a second sieving line 58 are provided.
The sheave case 50 is swingably driven by an eccentric cam type driving unit 59.

The upper surface side of the sheave case 50 is the processed object transfer surface 20A of the swing selection device 20, and the processed object transfer surface 20A includes the processed object from the threshing processing section C1 and the second reducing device 27. Things are supplied.
The upper surface of the sheave case 50 that constitutes the workpiece transfer surface 20A is wider in the left-right direction than the width of the receiving net 12 in the left-right direction, and as shown in FIGS. 4 and 6 , the receiving net 12 and the right wall 35R. The center position of the sheave case 50 in the left-right direction is biased to the right of the center positions of the handle cylinder 11 and the net 12 in the left-right direction so that a certain distance is generated between them.

The auxiliary sorting plate 57 is located at a rear upper portion of the chaf sheave 53, and is provided between the chaf sheave 53 and the workpiece transfer surface 20A with a vertical interval such that an upstream workpiece can pass through. Has been.
As shown in FIG. 3 , the auxiliary sorting plate 57 of the threshing processing unit C1 is provided near the rear portion of the handling chamber 17 and at a position facing between the rear end portion of the receiving net 12 and the rear wall portion 30. It receives the object to be processed that has a large amount of straw discharged from near the rear part and conveys it backward. The object having a large amount of discharged straw is passed to the straw rack 54 through the second sieving line 58 together with the object passing below the auxiliary sorting plate 57.

[Flow-down guide]
In the second product return path R1, the second product horizontally ejected from the second product discharge port 27D follows the second product drop path from the second product discharge port 27D to the upper surface of the swing sorting device 20. . In most of the second object drop path, as shown by the bounce path R2 in FIGS . 4 to 6 , with the rotation of the rotary blade 27C, the swing selection on the front side of the second object discharge port 27D is performed. It is fed onto the device 20. However, as shown by a stall fall path R3 in the figure, a part of the second object is a cylinder cover 46 that covers the lateral outer side of the electric hydraulic cylinder 45 existing on the front side of the second object outlet 27D. There is a risk that the sliding force or collision may cause the splashing force to the front side to be attenuated, resulting in dropping at a position near the second object discharge port 27D. In this way, if the second object drops too close to the second object outlet 27D, the second object may reach the end of the swing selecting device 20 without undergoing a sufficient re-sorting process. The bounce route R2 and the stall fall route R3 described above also correspond to the second material return route R1.
In the present embodiment, in order to avoid such an inconvenience, the downflow guide body 60 is provided at the end of the second product reducing route R1.

As shown in FIGS. 3 to 7 , the flow-down guide body 60 faces the rear end portion of the receiving net 12 and the rear wall portion 30 near the rear portion of the handling chamber 17 in the front-rear direction. . In the up-down direction, the flow-down guide body 60, like the auxiliary sorting plate 57, is spaced apart from the workpiece transfer surface 20A of the chaff sheave 53 by a vertical distance such that an upstream workpiece can pass through, The lower end is arranged and provided so as to be located between the receiving net 12 and the workpiece transfer surface 20A of the chaff sheave 53 in a side view.

The flow-down guide body 60 is laterally aligned with the auxiliary sorting plate 57 in the left-right direction, is located at the right end of the auxiliary sorting plate 57, and is supported by the sheave case 50, which is a support frame common to the auxiliary sorting plate 57. .
At this time, the flow-down guide body 60 is located at a position deviating from the existing position of the receiving net 12 in plan view, does not overlap with the receiving net 12, and overlaps with the workpiece transfer surface 20A in plan view. It is provided at the position where Then, the flow-down guide body 60 is formed on the inclined surface 61 that is inclined downward so that the upper surface thereof guides the second object toward the upper side of the workpiece transfer direction.

Due to the presence of this flow-down guide body 60, of the second object that is ejected forward with the rotation of the rotary blade 27C, the second object is slidably contacted with or collides with the cylinder cover 46 and the ejection force to the front side is exerted. The attenuated second object can also be supplied while guiding it to the upstream side of the object transfer surface 20A of the chaff sheave 53.
In other words, the second object, which has slidably contacted or collided with the cylinder cover 46 and whose propelling force to the front side has been attenuated, falls downward from the vicinity of the second object discharge port 27D as shown by the stall drop path R3. Is also guided by the downward inclined surface 36b of the lateral side wall portion 35Ra and the downwardly inclined surface 61 of the flow-down guide body 60 existing below it, in the object transfer direction on the object transfer surface 20A of the chaff sheave 53. The second one will be sent to the upstream side.

(Rotation sensor)
As shown in FIGS. 8 and 9 , a rotation sensor 62 for detecting the number of rotations of the vertical screw 27B is provided at the upper end of the tubular portion 27A of the secondary reduction device 27.
The rotation sensor 62 is attached to an L-shaped bracket 63 fixed to the upper end of the tubular portion 27A. The L-shaped bracket 63 includes a mounting piece 63a for the upper end of the tubular portion 27A and a rising piece 63b, and the rotation sensor 62 is attached to the rising piece 63b in a lateral direction.

The sensor plate 64, which is the detection target of the rotation sensor 62, is fixed to the screw shaft 27Ba of the vertical screw 27B and is attached so as to rotate together with the screw shaft 27Ba.
The bearing holder 65 for fixing the ball bearing 27Bb that supports the upper end of the screw shaft 27Ba is integrally fixed to the mounting piece 63a of the L-shaped bracket 63 by spot welding.

Therefore, the sensor plate 64 attached to the screw shaft 27Ba whose upper end side is supported by the bearing holder 65 fixed to the attachment piece portion 63a of the L-shaped bracket 63 is positioned at the position with the rotation sensor 62 fixed to the rising piece portion 63b. Relationships are always kept constant. Therefore, it is not necessary to adjust the relative positions of the sensor plate 64 and the rotation sensor 62 each time the secondary reduction device 27 is assembled and disassembled.
In the figure, reference numeral 66 is a mounting plate for connecting and fixing the bearing holder 65 and the L-shaped bracket 63 to the upper end of the tubular portion 27A, and is configured to be detachable using a connecting bolt 67.

[Other]
10 to 12 show the second object collecting section 23 provided in the sorting processing section C2.
As shown in FIG. 3 , the second object recovery unit 23 is provided at the bottom near the rear of the sorting processing unit C2, and is in a position where it can be inspected from below the rear of the machine.
For the inspection, a plurality of round hole-shaped inspection windows 23a are formed on the bottom surface of the second object recovery section 23 in a state of being lined up along the axial direction of the second screw 26.

The inspection window 23a of the second object recovery unit 23 is configured to be opened and closed by a strip-shaped opening / closing plate 68 facing the bottom surface of the second object recovery unit 23. That is, the opening / closing plate 68 is provided with the opening holes 68a which are equal to or slightly larger than the inspection window 23a and are formed at the same intervals as the inspection window 23a. Therefore, by sliding the opening / closing plate 68 by a predetermined amount along the axial direction of the second screw 26, the inspection window 23a can be opened or closed at one time.
The slide operation of the opening / closing plate 68 is performed by being guided by the guide rails 69 welded and fixed to the front and rear sides of the opening / closing plate 68 on the bottom surface of the second object collecting section 23. An operation rod 68b for pushing and pulling operation is fixed to an end portion of the opening / closing plate 68.

In the above-mentioned second object recovery section 23, the second screw 26 is mounted in a suspended state over the right side wall 35R and the left side wall 35L of the handling chamber 17.
In the work at the time of mounting the second screw 26, the insertion opening on the right side wall 35R side of the handling chamber 17 in a state where the bearing holder 70 that pivotally supports the screw shaft 26a is externally fitted to the left end portion of the screw shaft 26a. The bearing holder 70 is inserted into the handling chamber 17 (not shown), and the bearing holder 70 is inserted and fixed in a mounting hole (not shown) formed in the left side wall 35L of the handling chamber 17.
When this work is performed, the maximum diameter portion of the bearing holder 70 is formed to be slightly larger than the outer diameter of the second screw 26, and the outer peripheral portion of the bearing holder 70 is placed on the bottom surface of the second object recovery section 23. The second screw 26 is pushed in from right to left.

However, as described above, the inspection window 23a for inspection is formed on the bottom surface of the second object recovery section 23. Therefore, in this embodiment, the chamfered portion 70a is formed on the outer peripheral portion of the bearing holder 70 so that the outer peripheral portion of the bearing holder 70 does not fall into the inspection window 23a and become caught.
Therefore, even if the outer peripheral portion of the bearing holder 70 falls into the inspection window 23a, it can be easily overcome by the inclination of the chamfered portion 70a, and the second screw 26 can be easily pushed in smoothly.

[Another embodiment]
Hereinafter, another embodiment in which the above embodiment is modified will be described. The following other embodiments can be applied in combination with a plurality of the above embodiments as long as no contradiction occurs.

(1) In the above-described embodiment, the structure in which the downflow guide body 60 is formed integrally with the auxiliary sorting plate 57 is illustrated, but the structure is not limited to this structure. For example, the flow-down guide body 60 and the auxiliary selection plate 57 may be separately attached to the sheave case 50, or the flow-down guide body 60 may be provided without the auxiliary selection plate 57.
Other configurations may be the same as those of the above-described embodiment.

(2) In the above-described embodiment, like the auxiliary sorting plate 57, the downflow guide body 60 is positioned between the chaff sheave 53 and the workpiece transfer surface 20A in the vertical direction such that an upstream workpiece can pass therethrough. Although the structure provided at intervals is illustrated, the structure is not limited to this.
For example, the flow-down guide body 60 may be provided so that its lower end is at the same level as the workpiece transfer surface 20A of the chaff sheave 53. In this case, it is desirable that the upper surface of the flow-down guide body 60 be a front-down inclined surface 61 and be inclined so that the center side becomes lower in the lateral width direction of the chaff sheave 53.
Other configurations may be the same as those of the above-described embodiment.

(3) In the above embodiment, the structure in which the downflow guide 60 is provided at a position deviating from the position where the receiving net 12 is present in a plan view is illustrated, but the structure is not limited to this structure.
For example, the flow-down guide body 60 may be provided over a position deviated from the location where the receiving net 12 is present in a plan view and a range including a part of the location where the receiving net 12 is present.
Other configurations may be the same as those of the above-described embodiment.

(4) In the above embodiment, the actuator for moving up and down the handling barrel frame 44 and the handling barrel 11 has the structure employing the electric hydraulic cylinder 45. However, the actuator is not limited to this structure. For example, a hydraulic cylinder or an electric cylinder may be adopted.
Other configurations may be the same as those of the above-described embodiment.

The present invention can be applied not only to self-removing combine harvesters, but also to all-culm input-type combine harvesters in which all culms of harvested culm are put into a threshing device.

10 Threshing Device 11 Handling Cylinder 12 Receiving Net 20 Swing Sorting Device 20A Workpiece Transfer Surface 22 First Product Collection Section 23 Second Product Collection Section 27 Second Reduction Device 27D Second Product Discharge Port 35Ra Side Wall Section 50 Support Frame Body 53 Chaf sheave 57 Auxiliary sorting plate 60 Downflow guiding body 61 Front-down inclined surface C1 Threshing processing section C2 Sorting processing section

Claims

A threshing processing unit that performs a handling process by a handling cylinder and leaks and sorts an object to be processed by a receiving net, and a sorting process that is provided below the threshing processing unit and performs a sorting process on an object to be leaked from the receiving net. And a threshing device having
An oscillating sorting device that swings and sorts an object to be processed to the sorting processing section while transferring it backward, and a first item that is provided below the oscillating sorting device and that is sorted by the oscillating sorting device is collected. A first item recovery unit, and a second item recovery unit that is provided below the swing sorting device and behind the first item recovery unit, and that collects the second item sorted by the swing sorting device. A second reducing device, which is connected to the second-product collecting unit, discharges the second product and discharges the second product above the swing sorting device,
The second product discharge port of the second reducing device is on the side wall on the side where the second reducing device is installed, out of the left and right side walls of the threshing device, above the object transfer surface of the swing sorting device. Is provided on the side wall located at
In the second product drop path from the second product discharge port inside the threshing device to the swing sorting device, a flow-down guide body that guides the second product toward the swing sorting device is provided,
The flow-down guide body is provided on the inner side of the threshing device with respect to the lateral side wall portion and at a position overlapping with the object transfer surface in the swing sorting device in a plan view, to the upper side of the object transfer direction. A combine that is formed on the sloping front slope that guides the second object toward the front.
The downflow guide body is provided only in a region on the side where the second product discharge port is provided in the left-right width direction of the threshing device in the upper region of the swing sorting device. Combine.
The swing sorting device is configured to be wider than the receiving net in the left-right width direction of the threshing device,
The combine according to claim 1 or 2, wherein the flow-down guide body is provided at a position deviated from an existing position of the receiving net in a plan view.
The rocking sorting device is provided with a chaff sheave that sorts and leaks grains in the object to be processed while transferring the object to be processed backward,
4. The combine according to claim 1, wherein the flow-down guide is arranged such that a lower end thereof is located between the net and the workpiece transfer surface of the chaff sheave in a side view. .
An auxiliary sorting plate for receiving an object to be discharged near the rear part of the threshing processing section is provided at a rear upper portion in the object transfer direction on the object transfer surface of the chaff sheave.
The combine according to claim 4, wherein the flow-down guide body is provided in a side-by-side arrangement with the auxiliary sorting plate.
The combine according to claim 5, wherein the auxiliary sorting plate and the flow-down guide body are integrally formed by a common support frame body.