JP6800033B2 - Threshing device - Google Patents

Description

The present invention is arranged below the front and lower parts of a threshing unit having a handling cylinder and a receiving net, a rocking sorting device that swings and sorts the processed material that has been threshed by the threshing part and leaks from the receiving net, and a rocking sorting device. The present invention relates to a threshing device provided with a sorting unit having a wall insert, which blows sorting air to a swing sorting device.

For example, in the threshing device described in Patent Document 1, a horizontal suction port (“suction port” in the document) for sucking outside air is formed on the side of a wall insert case (“fan case” in the document), and a blower fan is formed. By rotating (in the literature, the "blade member"), the outside air is sucked from the lateral suction port, and the sorting air is blown.

Japanese Unexamined Patent Publication No. 2014-014330

By the way, when the processing amount of the threshing apparatus is increased, it is necessary to improve the processing capacity of the threshing unit and the sorting capacity of the sorting unit. Then, in order to improve the sorting ability of the sorting unit, it is necessary to increase the air volume of the sorting air, and by increasing the size of the blower fan and the rotation speed of the blower fan, the air volume of the sorting air increases. However, as a premise, unless the amount of outside air sucked into the wall insert case is increased, a load is applied to the blower fan, and the sorting wind cannot be increased efficiently.

In view of the above circumstances, there is a demand for a threshing device capable of efficiently increasing the air volume of the sorting wind from the wall insert.

The present invention
A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side portion of the wall insert case, and a front suction port for sucking outside air is formed on the front wall portion of the wall insert case .
A front suction amount adjusting mechanism provided in front of the front suction port and adjusting the suction amount of outside air at the front suction port is provided.
The front suction port is formed in a horizontally long shape extending to the left and right of the front wall portion.
The front suction amount adjusting mechanism is located at a position distant from the front suction port forward, facing the front suction port over the left and right ends of the front suction port, and with the upper part of the front suction port. It has a front plate member provided with a gap over the entire width between them and a gap over the entire width between the front suction port and the lower portion.
The front plate member moves in perspective with respect to the front suction port, and a gap between the lower part of the front plate member and the lower part of the front suction port and a gap between the upper part of the front plate member and the upper part of the front suction port are formed. It is characterized in that the suction amount of the outside air at the front suction port is adjusted by being changed .

According to the present invention, since the suction port is formed not only on the side portion of the wall insert case but also on the front portion of the wall insert case, it is compared with the case where the suction port is provided only on the side portion of the wall insert case. Therefore, it is possible to increase the opening area of the suction port of the entire wall insert case. Therefore, the amount of outside air sucked into the wall insert case can be increased, and as a result, the air volume of the sorting wind can be efficiently increased.

The "front part" of the wall insert case is a part different from the side part of the wall insert case, and is located on the front side of the wall insert case and faces immediately before, slightly forward and upward, or slightly forward and downward. It shows the part that was there.

Even if the processing capacity of the threshing device is increased, the processing amount may be small. In such a case, if the sorting air volume is too large, the sorting air may blow off the grains as well as the straw waste. In addition, the suitable selection air volume differs depending on the crop species to be treated and the degree of dryness of the crop. With this configuration, since the pre-suction amount adjusting mechanism is provided, the threshing device can be used for various conditions such as the processing amount, the crop species, and the degree of dryness of the crop.

Further, in this configuration, the suction amount of the outside air at the front suction port is adjusted by the perspective movement of the front plate member with respect to the front suction port. Therefore, a pre-suction amount adjusting mechanism having a simple structure can be obtained.

The present invention
A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side of the wall insert case, and a front suction port for sucking outside air is formed on the front part of the wall insert case.
A front suction amount adjusting mechanism for adjusting the suction amount of outside air at the front suction port and a lateral suction amount adjusting mechanism for adjusting the suction amount of outside air at the lateral suction port are provided.
The front suction amount adjusting mechanism has a front plate member provided at a position distant from the front suction port forward and facing the front suction port.
The lateral suction amount adjusting mechanism has a lateral plate member provided so as to face the lateral suction port.
By moving the lateral plate member with respect to the lateral suction port and changing the amount of overlap between the lateral plate member and the lateral suction port, the suction amount of outside air at the lateral suction port is adjusted. Consists of
The front plate member moves integrally with the side plate member and moves in perspective with respect to the front suction port to change the gap between the front plate member and the front portion of the wall insert case. It is characterized in that it is configured to adjust the suction amount of the outside air at the front suction port .

According to this configuration, since both the front suction amount adjusting mechanism and the lateral suction amount adjusting mechanism are composed of plate members, the sorting air volume can be adjusted by a simple structure. Further, both plate members are configured to move integrally, and the suction amount into the wall insert case can be greatly changed at once with a simple configuration.

In the present invention
The horizontal suction ports are formed on both left and right sides of the wall insert case, and the horizontal plate members are provided for each of the left and right horizontal suction ports.
A lateral shaft core member that connects the left and right horizontal plate members is provided, and the left and right horizontal plate members can swing integrally around the shaft core member.
It is preferable that the front plate member is supported by the shaft core member.

According to the configuration of the present invention, the left and right lateral plate members and the front plate member can be integrally moved by using the shaft core member that connects the left and right lateral plate members, and the front suction amount adjusting mechanism and the lateral It is possible to simplify the interlocking structure with the suction amount adjusting mechanism.

The present invention
A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side of the wall insert case, and a front suction port for sucking outside air is formed on the front part of the wall insert case.
A pre-suction amount adjusting mechanism for adjusting the suction amount of outside air at the front suction port is provided.
It said cover portion for covering the front upper portion of the winnowing fan casing, characterized in that provided above the pre-sucking amount adjusting mechanism integrally.

If a front suction port is formed in the front upper part of the wall insert case, dust such as straw dust falling from above may be sucked into the wall insert case from the front suction port, and the sorting performance may be deteriorated. With this configuration, it is possible to prevent dust such as straw dust falling from above from being sucked from the front suction port. Furthermore, since the cover part operates integrally with the front suction amount adjustment mechanism, when the front suction amount adjustment mechanism moves, the cover part also moves, and by the movement, straw dust and the like accumulated on the upper part of the cover part are sifted downward. be able to.

In the present invention
It is preferable that the cover portion is formed of a porous member.

If the cover portion is provided, the amount of intake air from above the front suction port may decrease. However, according to this configuration, since the outside air is sucked into the front suction port through the hole provided in the cover portion, the suction from the front suction port is prevented while preventing the accumulation of straw dust and the like on the front upper part of the wall insert case. The amount reduction can be avoided.

In the present invention
It is preferable that the front suction port is provided with a pre-porous member that prevents foreign matter from entering.

Since the wall insert is located on the lower front side of the sorting section, that is, near the ground, foreign matter such as stones and mud around the device enters the inside of the wall insert case from the suction port due to the suction pressure of the blower fan, and blows air. There is a risk that the rotating shaft of the fan or blower fan will be damaged. However, according to the present invention, the pre-porous member prevents foreign matter from entering the wall insert case.

In the present invention
It is preferable that the lateral suction port is provided with a transversely porous member that prevents foreign matter from entering.

With this configuration, the transverse porous member prevents foreign matter from entering the wall insert case.

In the present invention
It is preferable that the laterally porous member is provided only in a portion of the lateral suction port below the rotation axis of the blower fan.

Depending on the size of the holes in the transversely porous member, the transversely porous member may cause some intake resistance from the lateral suction port. In addition, foreign matter that is hard or large enough to damage the blower fan or the like is often present near the ground. In this configuration, the part of the lateral suction port near the ground is covered with the lateral porous member, and the high portion of the lateral suction port away from the ground is not provided with the lateral porous member, so that foreign matter enters. And the reduction of suction resistance are compatible.

It is a vertical cross-sectional left side view of a threshing device. It is the left side view of the vertical section which shows the front upper part of the wall insert and the front suction amount adjustment mechanism. It is a left side view which shows the wall insert and the lateral suction amount adjustment mechanism. It is a front view which shows the wall insert and the front suction amount adjustment mechanism. It is a front view which shows the wall insert when the front suction amount adjustment mechanism was removed. It is a vertical sectional left side view which shows the chaff sheave concerning another embodiment. It is a vertical sectional left side view which shows the chaff sheave concerning another embodiment.

[Basic configuration of threshing device]
The embodiment of the threshing apparatus according to the present invention will be described with reference to the drawings.
FIG. 1 shows a threshing device 1 which is an embodiment of the present invention. The threshing device 1 is provided with a threshing unit 2 for threshing the processed product and a sorting unit 3 for selecting and collecting grains from the processed product threshed by the threshing unit 2. The threshing unit 2 is located above the threshing device 1, and the sorting unit 3 is located below the threshing device 1. That is, the sorting unit 3 is arranged below the threshing unit 2. Behind the threshing device 1, a chopper 4 for shredding straw and the like is provided.

The threshing section 2 is provided with a handling chamber 5, and the handling cylinder 6 and the receiving net 7 are arranged in the handling chamber 5. The handling cylinder 6 is configured to be rotatable around the axis X1 of the handling cylinder shaft 8. A scraping portion 10A is provided at the front portion of the handling cylinder 6, a handling processing portion 10B is continuously provided behind the scraping portion 10A, and the scraping portion 10A and the handling processing portion 10B rotate integrally. The harvested culm transported by the feeder F is scraped from the feeder F by the rotation of the spiral blade 11 provided in the scraping section 10A, and is transported to the rear handling section 10B. The handling cylinder 6 includes a handling cylinder shaft 8, a plurality of disk-shaped support members 9 supported at a plurality of locations in the direction of the shaft core X1 of the handling cylinder shaft 8, and a circumferential interval between the outer peripheral portions of the support members 9. A tooth handling support member 12 that is supported in a state of being open is provided. Then, the plurality of handling teeth 13 are supported by the handling tooth support member 12 in a state of protruding outward in the radial direction and in a state of being spaced apart in the axial core X1 direction. As described above, the handling cylinder 6 is formed in a hollow basket shape, and the internal space of the handling cylinder 6 also functions as a handling processing space. When the amount of threshing is large, the processed material can be retracted into the internal space from between the adjacent tooth-handling support members 12, and in the internal space, the processed material may hit each other or centrifuge. Threshing is performed by stirring with force or the like. The processed product that has been threshed by the rotation of the handling cylinder 6 is sieved and sorted by the receiving net 7 arranged below, and leaks to the sorting unit 3.

The sorting unit 3 is provided with a swing sorting device 14, a wall insert 15, a first item collecting unit 16, and a second item collecting unit 17. The rocking sorting device 14 has a Glenpan 18, a chaff sheave 19, a Glenshive 21, a straw rack 22 and the like, and is configured to swing in the front-rear direction by an eccentric cam type swing mechanism 23. The wall insert 15 has a blower fan 26, and the sorting wind generated by the rotation of the blowing fan 26 is blown toward the swing sorting device 14, and light straw dust and the like are blown to the rear of the device by the sorting wind. Has been done. The details of the wall insert 15 will be described later.

The processed material leaked from the receiving net 7 to the Glenpan 18 is transported backward to the chaff sheave 19 by rocking back and forth, and the weight is sorted so that the grains having a large specific gravity are separated into the lower layer and the straw waste having a small specific gravity is transferred to the upper layer. Be separated. As a result, the straw debris separated in the upper layer is easily blown to the rear of the device by receiving the sorting wind from the wall insert 15.

In this embodiment, the Glenpan 18 is divided into a first Glenpan 18a and a second Glenpan 18b. Further, a sieve line 18c is provided behind the first Glen pan 18a, and the processed material transported backward through the weight sorting in the first Glen pan 18a is leak-sorted by the sieve line 18c.

The processed material conveyed to the chaff sheave 19 is conveyed rearward by rocking back and forth and is sorted for leakage. The chaf sheave 19 has a plurality of chaflip 20, and each chaflip 20 is tilted in a rearward rising posture in the front-rear direction, and the gap between the chaflip can be adjusted by changing the tilt angle. Has been done. The grains separated into the lower layer by the weight sorting of the Glenpan 18 are promoted to leak from the gaps between the chaflip, and the leak sorting is performed by the Glensive 21. Relatively large straw debris is conveyed to the chopper 4 via the straw rack 22 and shredded.

The grains collected by the first item collecting unit 16 are transported to a grain tank (not shown). The grains containing the straw waste collected by the second product collecting unit 17 are reduced and transported to the front part of the handling chamber 5 and threshed again.

As shown in FIG. 2, the wall insert 15 is provided with a wall insert shaft 25 that is rotatable around a shaft core X2 and a blower fan 26. The blower fan 26 is connected to the wall insert shaft 25 via a disk-shaped support portion 24, and the blower fan 26 and the wall insert shaft 25 are configured to be integrally rotatable. The blower fan 26 is configured to rotate in the direction indicated by the arrow A about the shaft core X2, and is formed so as to be curved in the direction indicated by the arrow A so as to extend from the base end side to the tip end side of the blower fan 26. Has been done.

Although not shown, pulleys are provided at the ends of both shafts of the wall insert shaft 25, and the power from the engine is transmitted to the pulley on one end side, and the swing mechanism 23 and the first object recovery unit are transmitted from the pulley on the multi-end side. The power of the engine is transmitted to 16, the second item collection unit 17, the chopper 4, and the like. In this way, the wall insert shaft 25 also serves as a relay shaft for transmitting power to another drive system.

As shown in FIGS. 3 to 5, the blower fan 26 is covered with a wall insert case 27, and lateral suction ports 28 for sucking outside air are formed on the left and right sides of the wall insert case 27, and the outside air is formed. A front suction port 29 for sucking the wall insert 29 is formed in the front portion (front wall portion) of the wall insert case 27. Further, the front stay member 30 is provided so as to support the upper and lower portions of the substantially central portion of the front suction port 29 in the left-right direction, and the rigidity of the wall insert case 27 is ensured.

As shown in FIG. 1, a first air passage 31 for blowing the sorting air to the lower side of the swing sorting device 14 is formed in the lower rear portion of the wall insert case 27, and the swing sorting device 14 is formed. A second air passage 32 for blowing the selective air to the upper side of the wall insert case 27 is formed from the upper side to the rear side of the wall insert case 27. When the blower fan 26 rotates in the direction A, the outside air is sucked from the front suction port 29 and the lateral suction port 28 by the rotation of the blower fan 26, and the sucked outside air is used as the sorting air in the first air passage 31 and the second air passage 31 and the second. It is discharged to the air passage 32.

The first air passage 31 includes an air passage 31A that mainly sends a sorting air to the front part of the chaff sheave 19, an air passage 31B that mainly sends a sorting air to the Glensive 21, and a main air sorting device 14 below the swing sorting device 14. An air passage 31C for sending out wind is provided. The sorting wind flowing through these air passages 31A, 31B, and 31C blows straw debris and the like contained in the processed material leaking from the chaff sheave 19 and the grain sheave 21 to the rear of the apparatus.

The second air passage 32 is discharged from the wall insert case 27 in the forward direction, and the air passage is inverted by the air pipe bent in a U shape, and is formed as an air passage flowing above the swing sorting device 14. In other words, the second air passage 32 is formed as an air passage for the selective air flowing above the chaff sheave 19 via the space between the first Glen pan 18a and the second Glen pan 18b. By the sorting wind flowing through this air passage, the straw debris having a light specific gravity separated into the upper layer by the weight sorting of the second Glenpan 18b is blown backward, and the processed material falls from the sieve line 18c behind the first Glenpan 18a. The contained straw debris is also blown backwards.

As shown in FIGS. 2 to 4, the wall insert 15 has a front suction amount adjusting mechanism 33 for adjusting the suction amount of the outside air from the front suction port 29, and a suction of the outside air from the lateral suction port 28. A lateral suction amount adjusting mechanism 34 for adjusting the amount is provided. That is, the suction amount of the outside air is adjusted by the front suction amount adjusting mechanism 33 and the lateral suction amount adjusting mechanism 34, so that the air volume of the sorting air blown from the blower fan 26 to the swing sorting device 14 is adjusted.

The front suction amount adjusting mechanism 33 is provided with a front plate member 36. The left-right width of the front plate member 36 is formed longer than the left-right width of the wall insert case 27, and the vertical length of the front plate member 36 is longer than the vertical length of the front suction port 29. Is configured to cover the front suction port 29 of the wall insert case 27 from the front. In the present embodiment, the folded plate portion 36a bent and formed so as to bend toward the wall insert case 27 side is formed in the lower part of the front plate member 36. That is, the folded plate portion 36a of the front plate member 36 is bent so as to be closer to the front portion of the wall insert case 27. The front plate member 36 moves in perspective with respect to the front suction port 29, and the gap between the tip of the folded plate portion 36a of the front plate member 36 and the front portion of the wall insert case 27 is changed, so that the gap is passed through this gap. Then, the suction amount of the outside air sucked into the front suction port 29 is adjusted. As a result, when the front plate member 36 approaches the front suction port 29, the amount of outside air suction at the front suction port 29 is reduced. Of course, in order to adjust the required suction amount at the front suction port 29, the bending angle of the folded plate portion 36a, the range of the gap between the front suction port 29 and the folded plate portion 36a, and the like can be appropriately redesigned.

A cover portion 36b bent so as to bend toward the wall insert case 27 is formed on the upper portion of the front plate member 36. The cover portion 36b is formed in a rearward rising shape in the front-rear direction so as to cover the front upper portion of the wall insert case 27 integrally with the front plate member 36. As a result, dust, straw debris, and the like are configured to fall downward without accumulating on the cover portion 36b. Further, a punching metal-like porous portion is formed on the surface of the cover portion 36b. Since the outside air is sucked into the front suction port 29 via the porous portion on the surface of the cover portion 36b, a sufficient suction amount of the front suction port 29 is secured. Since the cover portion 36b is also used as a dustproof for the front suction port 29, it is desirable that the size of the holes in the perforated portion is such that straw debris and the like do not pass through.

The lateral suction amount adjusting mechanism 34 is provided with a lateral plate member 37. The vertical length of the horizontal plate member 37 is formed to be longer than the vertical length of the horizontal suction port 28. Further, the width in the front-rear direction of the side plate member 37 is formed so as to cover the front side of the side suction port 28. While the lateral plate member 37 is along the side surface of the wall insert case 27, the lateral suction port 28 is moved in parallel with the side surface of the wall insert case 27 to change the amount of overlap between the horizontal plate member 37 and the lateral suction port 28. The suction amount of the outside air in the wall insert is adjusted. In other words, the lateral suction port 28 is covered with the lateral plate member 37 from the outside of the wall insert case 27, so that the opening area of the lateral suction port 28 is narrowed and the suction amount at the lateral suction port 28 is adjusted.

As shown in FIGS. 2 to 4, the front plate member 36 and the side plate member 37 are attached to the shaft core member 35, and the front plate member 36 and the side plate member 37 move integrally. It is configured to do. The shaft core member 35 is formed in a pipe shape, and is composed of an upper side portion 35a along the left and right direction of the wall insert case 27 and a side side portion 35b extending from the left and right ends of the upper side portion 35a while bending forward and downward. There is. That is, it is bent so as to bend from the left-right direction to the downward direction from the upper side portion 35a to the side side portion 35b.

The device frame 40 is provided with a pair of left and right swing support portions 40a projecting forward, and an upper side portion 35a is swingably supported on the pair of left and right swing support portions 40a.

The insertion holes provided in the side side portion 35b of the shaft core member 35, the insertion holes provided in the left and right ends of the front plate member 36, and the fastening holes provided in the side plate member 37 were overlapped with each other. In this state, the bolts are inserted and fastened. As a result, the front plate member 36 and the side plate member 37 are attached to the shaft core member 35, and the upper side portion 35a supported by the swing support portion 40a is used as the shaft core to swing freely. .. The front plate member 36 may be attached to the upper side portion 35a. Further, the front plate member 36 may be welded and fixed to the shaft core member 35.

An elongated hole 37b is provided in the lower portion of the lateral plate member 37, and the elongated hole 37b is formed in a curved shape along the swing direction of the lateral plate member 37 and has a hole diameter through which the wing bolt 37c can be inserted. It is formed so as to be. The wing bolt 37c is inserted into the elongated hole 37b and fastened to a bolt fastening hole (not shown) provided on the left side of the wall insert case 27 when viewed forward. As described above, the front plate member 36 and the lateral plate member 37 attached to the shaft core member 35 are configured to be fixed by the wing bolts 37c inserted through the elongated holes 37b. In the present embodiment, the elongated holes 37b are provided only on the side plate members 37 corresponding to the left side surface of the wall insert case 27 in front view, but are provided on the left and right side plate members 37 corresponding to both side surfaces of the wall insert case 27, respectively. It may be configured to be.

As shown in FIGS. 3 and 5, a front porous member 38 is provided in the front suction port 29 of the wall insert case 27 for the purpose of preventing foreign matter from entering, and the lateral suction port 28 is provided. Is provided with a transverse porous member 39.

The pre-porous member 38 is formed so as to form a mesh-like net, and the front suction port 29 is configured to cover the entire wall insert case 27 from the outside. That is, the left-right width of the front porous member 38 is formed longer than the left-right width of the front suction port 29, and the vertical length of the front porous member 38 is formed longer than the vertical length of the front suction port 29. Mounting stays 41 are provided above and below the front suction port 29, respectively. The mounting stay 41 is formed in an inverted U shape protruding from the wall insert case 27, and a fastening hole for the fixing bolt Bo is formed on the tip surface of the protrusion, and the base end portion is welded and fixed to the wall insert case 27. The fixing bolt Bo is fastened to the fastening hole of the mounting stay 41 with an arbitrary mesh in the front porous member 38 inserted. At this time, a washer 42 is sandwiched between the head of the fixing bolt Bo and the front porous member 38. The outer circumference of the washer 42 has a shape larger than the mesh of the front porous member 38, and the mesh of the front porous member 38 is sandwiched between the washer 42 and the mounting stay 41 from the head of the fixing bolt Bo. It is configured so that it will not come off. As a result, the front porous member 38 is fixed so as to cover the front suction port 29 from the outside of the wall insert case 27.

The laterally porous member 39 is formed so as to form a mesh-like net, and the lateral suction port 28 is configured to be covered from the outside of the wall insert case 27. A mounting stay 43 for mounting the transverse porous member 39 is welded and fixed to a portion of the device frame 40 corresponding to the side portion of the wall insert case 27. Further, fastening holes for the fixing bolts Bo are provided on the side portions of the mounting stay 43 and the wall insert case 27. The fixing bolt Bo is fastened to the fastening hole in a state of being inserted into an arbitrary mesh in the transverse porous member 39. Further, as in the case of the front porous member 38, the washer 44 is fixed between the head of the fixing bolt Bo and the front porous member 38 in a state of being sandwiched, and the mesh of the transverse porous member 39 is formed. Is configured to prevent the fixing bolt Bo from coming off the head.

The transverse porous member 39 is attached so as to cover only the lower half of the transverse suction port 28. Therefore, a sufficient suction amount is secured from the upper half of the lateral suction port 28. Further, the invasion of foreign substances (for example, stones and mud in the field) that are flipped up during the harvesting run of the harvester equipped with the threshing device 1 is prevented by the laterally porous member 39 provided in the lower half. In the threshing device 1 mounted on the harvester, the lateral porous member 39 may be attached to the lateral suction port 28 on the side opposite to the grain tank, that is, on the side facing the field and where foreign matter is likely to enter. Especially desirable.

[Another Embodiment]
The present invention is not limited to the configurations exemplified in the above-described embodiments, and the following, typical alternative embodiments of the present invention will be exemplified.

[1] The perforated portion of the cover portion 36b formed on the upper portion of the front plate member 36 is not limited to the punched metal shape, and may be, for example, a mesh-shaped net.

[2] In the present embodiment, the width in the front-rear direction of the lateral plate member 37 is formed so as to cover the front side of the lateral suction port 28, but the present invention is not limited to this embodiment, and the width in the front-rear direction of the lateral plate member 37 is not limited. It is also possible to make the directional width longer than the front-rear width of the lateral suction port 28. That is, the width of the lateral plate member 37 in the front-rear direction can be appropriately changed in order to adjust the required suction amount at the lateral suction port 28.

[3] In the present embodiment, the front porous member 38 and the transverse porous member 39 are formed so as to form a mesh-like net, but the present embodiment is not limited to this, and punching metal may be used. Further, the front porous member 38 and the transverse porous member 39 do not have to be independent members, and may be integrally formed with, for example, the wall insert case 27.

[4] In the present embodiment, the laterally porous member 39 is attached so as to cover only the lower half of the lateral suction port 28, but the present invention is not limited to this, and the transversely porous member 39 is laterally attached. It may be attached so as to cover all of the suction ports 28.

[5] In the threshing device 1 mounted on the harvester, the lateral porous member 39 may be attached only to the lateral suction ports 28 on one of the left and right sides, or may be attached to the lateral suction ports 28 on both the left and right sides. .. That is, it is sufficient that the foreign matter flipped up by the harvesting machine does not invade the inside of the wall insert case 27 and the wall insert 15 is not damaged.

[6] When the crop species and the degree of dryness of the crop are poor, the weight of the straw dust may be heavy and the weight selection with the Glenpan 18 may not be performed well. Then, in the front portion of the chaff sheave 19, straw debris may leak to the first collection section 16 together with the grains. In such a case, by devising the configuration of the chaflip 20 in the chaf sheave 19 as follows, it is possible to maintain high sorting performance even when there is a large amount of heavy straw waste.

As shown in FIG. 6, of the chaflip 20, the chaflip 20a located in the front side portion (for example, the first chaflip 20a of the second to fifth sheets from the front side) is the sixth from the front. It is configured so that the gap between the chaflips is narrower than that of the subsequent second chaflip 20b. At the lower end of each chaflip 20, a protrusion is provided so as to project toward the front upper side. Of these, the protrusion of the first chaflip 20a is formed higher than the protrusion of the second chaflip 20b. As a result, the gap d1 in contact with the lower end of the first chaflip 20a is narrower than the gap d2 in contact with the lower end of the second chaflip 20b.

In the gap d1, the amount of grain leakage is reduced, but the amount of straw waste leakage is also reduced. Then, the processed material is conveyed to the rear portion of the chaff sheave 19 without leaking much. In the rearward transport process, the back-and-forth swing of the chaff sheave 19 promotes weight sorting of the processed material, and the grains and straw debris are separated by specific gravity in the vertical direction (heavy grains are located below). Then, while the processed product passes through the second chaflip 20b, the grains separated into the lower layer are actively leaked from the wide gap d2. The upper straw debris is blown to the rear of the device by the sorting wind from the wall insert 15. In this way, by positively reducing the leak sorting function in the front portion of the chaff sheave 19 (the region of the first chaf flip 20a), the weight of the entire chaff sheave 19 is sorted, and it is suitable for a processed product containing a large amount of heavy straw waste. Can be sorted.

Further, in the front portion of the chaf sheave 19, a configuration is adopted in which the rising height of the protrusion formed at the lower end of the chaflip 20 is adjusted so that the gap between the lower ends of the chaflip 20 is narrowed, but this is limited to this form. It is not something that can be done. For example, it may be a chaflip provided with a protrusion protruding from the rear upper end to the rear lower side. Further, as shown in FIG. 7, by allowing the front chaflip 20a to lie down more than the rear chaflip 20b, the gap d1 between the chaflip 20a on the front side is set between the rear chaflip 20b. It may be configured to be narrower than the gap d2. The number of the first chaflips 20a can be changed as appropriate, and the protrusions may be lengthened or laid down from the first chaflip 20.

The present invention is applicable not only to the threshing device equipped on the combine, but also to the single threshing device.

1: Threshing device 2: Threshing section 3: Sorting section 14: Swing sorting device 15: Wall insert 18: Glenpan 19: Chaf sheave 21: Glen sieve 26: Blower fan 27: Wall insert case 28: Horizontal suction port 29: Front suction port 33: Front suction amount adjustment mechanism 34: Lateral suction amount adjustment mechanism 35: Shaft core member 36: Front plate member 36a: Folded plate part 36b: Cover part 37: Horizontal side plate member 38: Front porous member 39: Lateral porous member

Claims (11)

A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side portion of the wall insert case, and a front suction port for sucking outside air is formed on the front wall portion of the wall insert case .
A front suction amount adjusting mechanism provided in front of the front suction port and adjusting the suction amount of outside air at the front suction port is provided.
The front suction port is formed in a horizontally long shape extending to the left and right of the front wall portion.
The front suction amount adjusting mechanism is located at a position distant from the front suction port forward, facing the front suction port over the left and right ends of the front suction port, and with the upper part of the front suction port. It has a front plate member provided with a gap over the entire width between them and a gap over the entire width between the front suction port and the lower portion.
The front plate member moves in perspective with respect to the front suction port, and a gap between the lower part of the front plate member and the lower part of the front suction port and a gap between the upper part of the front plate member and the upper part of the front suction port are formed. A threshing device configured to adjust the amount of outside air sucked at the front suction port by being modified . A lateral suction amount adjusting mechanism for adjusting the suction amount of outside air at the lateral suction port is provided.
The lateral suction amount adjusting mechanism has a lateral plate member provided so as to face the lateral suction port.
By moving the lateral plate member with respect to the lateral suction port and changing the amount of overlap between the lateral plate member and the lateral suction port, the suction amount of outside air at the lateral suction port is adjusted. Consists of
The threshing device according to claim 1 , wherein the front plate member moves integrally with the horizontal plate member and moves in perspective with respect to the front suction port. A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side of the wall insert case, and a front suction port for sucking outside air is formed on the front part of the wall insert case.
A front suction amount adjusting mechanism for adjusting the suction amount of outside air at the front suction port and a lateral suction amount adjusting mechanism for adjusting the suction amount of outside air at the lateral suction port are provided.
The front suction amount adjusting mechanism has a front plate member provided at a position distant from the front suction port forward and facing the front suction port.
The lateral suction amount adjusting mechanism has a lateral plate member provided so as to face the lateral suction port.
By moving the lateral plate member with respect to the lateral suction port and changing the amount of overlap between the lateral plate member and the lateral suction port, the suction amount of outside air at the lateral suction port is adjusted. Consists of
The front plate member moves integrally with the side plate member and moves in perspective with respect to the front suction port to change the gap between the front plate member and the front portion of the wall insert case. A threshing device configured to adjust the amount of outside air sucked at the front suction port. The horizontal suction ports are formed on both left and right sides of the wall insert case, and the horizontal plate members are provided for each of the left and right horizontal suction ports.
A lateral shaft core member that connects the left and right horizontal plate members is provided, and the left and right horizontal plate members can swing integrally around the shaft core member.
The threshing device according to claim 2 or 3 , wherein the front plate member is supported by the shaft core member. A threshing section with a handling barrel and net,
An oscillating sorting device that oscillates and sorts the processed material that has been threshed by the threshing section and leaked from the receiving net, and a oscillating sorting apparatus that is arranged in front of and below the oscillating sorting apparatus and that provides a sorting wind to the oscillating sorting apparatus. A sorting section with a wall insert, which blows air, is provided,
The wall insert has a blower fan that blows the sorting air and a wall insert case that covers the front portion and the lateral side portion of the blower fan.
A lateral suction port for sucking outside air is formed on the side of the wall insert case, and a front suction port for sucking outside air is formed on the front part of the wall insert case.
A pre-suction amount adjusting mechanism for adjusting the suction amount of outside air at the front suction port is provided.
A threshing device in which a cover portion covering the front upper part of the wall insert case is integrally provided with the front suction amount adjusting mechanism. The front suction amount adjusting mechanism has a front plate member provided at a position distant from the front suction port forward and facing the front suction port.
The suction amount of the outside air at the front suction port is adjusted by moving the front plate member in perspective with respect to the front suction port and changing the gap between the front plate member and the front portion of the wall insert case. The threshing device according to claim 5 , which is configured as described above. The threshing device according to any one of claims 1 to 4 , wherein a cover portion covering the front upper portion of the wall insert case is integrally provided with the front suction amount adjusting mechanism. The threshing device according to any one of claims 5 to 7 , wherein the cover portion is formed of a porous member. The threshing device according to any one of claims 1 to 8 , wherein a pre-porous member for preventing the invasion of foreign matter is provided in the pre-suction port. The threshing device according to any one of claims 1 to 9 , wherein a laterally porous member for preventing the invasion of foreign matter is provided in the lateral suction port. The threshing device according to claim 10 , wherein the laterally porous member is provided only in a portion of the lateral suction port below the rotation axis of the blower fan.

Images