JP4587397B2 - Rethreshing treatment device, threshing device and combine - Google Patents

Description

  The present invention relates to a threshing apparatus applied to a combine, and a threshing apparatus and a combine including the threshing apparatus.

  It has been conventionally known that a combine is provided with a rethreshing apparatus for rethreshing a selected product after being threshed by a threshing unit and subjected to a sorting process by a sorting unit (see, for example, Patent Document 1 below).

Generally, the said threshing processing apparatus is provided in the said combine so that the second thing (grains with a branch incision, a grain, etc.) selected by the said threshing part and the said selection part may be threshed again. .
That is, the combiner includes the threshing unit including the handling cylinder, the swing sorting mechanism disposed below the handling cylinder, and the wind sorting mechanism that supplies the sorting wind to the swing sorting mechanism. And a grain tank in which the first thing (the cereal after threshing) sorted from the cereal by the sorting unit is carried in via the cereal cylinder, and the second thing upstream of the swing sorting mechanism The re-threshing processing device is generally used as a second reduction processing device for removing unnecessary matter such as branch shoots from the cereal, and the downstream end in the transport direction of the reducing tube. And the swing sorting mechanism.

Specifically, the rethreshing processing apparatus includes a rethreshing processing case to which a processed product to be rethreshed is supplied, and a rethreshing processing cylinder that is inserted into the rethreshing processing case while being rotated around an axis. It has.
The rethreshing treatment case has a first end on the upstream side in the conveying direction located outside the threshing apparatus including the threshing part and the sorting part, and a second end on the downstream side in the conveying direction is inside the threshing apparatus. Provided to the second end by threshing the processed product supplied to the first end through the reduction cylinder with the rethreshing cylinder. It is comprised so that it may discharge | release to the inside of this threshing apparatus from a discharge port.

By the way, a first bearing portion and a second bearing portion are provided on the first end portion side and the second end portion side of the rethreshing processing case, respectively, and both end portions of the rethreshing cylinder are provided by the first and second bearing portions. Has been proposed (see, for example, Patent Document 1 below).
Thus, the structure that supports the rethreshing cylinder is supported from the viewpoint of stabilization of the rethreshing cylinder. On the other hand, the second bearing portion provided on the second end side includes the second threshing cylinder. Since a part of the discharge port is blocked, it is not preferable from the viewpoint of efficiently discharging the processed material from the discharge port.

In this regard, Patent Document 1 discloses that the support arm forming the second bearing portion has a substantially triangular shape when viewed in the axial direction of the rethreshing cylinder, and the central portion of the triangular support arm is an opening. It has been proposed to do.
Such a configuration is effective in that it can prevent the narrowing of the opening width of the discharge port as much as possible while supporting the rethreshing cylinder at both ends, but on the other hand, in order to maintain the strength, It is necessary to cast a triangular support arm.

Moreover, conveyance of a processed material is performed using the dust feed valve provided in the internal peripheral surface of the said threshing processing case. That is, the processed material put into the rethreshing treatment case is moved to the vicinity of the inner surface of the rethreshing treatment case by a centrifugal force accompanying rotation around the axis of the rethreshing treatment cylinder, and is guided by the dust feeding valve. Under the action, it is conveyed in the axial direction of the rethreshing cylinder.
Therefore, in order to efficiently discharge the processed material from the discharge port, it is necessary to consider the relative relationship between the support structure of the second bearing portion and the dust delivery valve. Was not made.
JP 2003-92919 A

The present invention has been made in view of the above prior art, and provides a rethreshing apparatus that can stably support a rethreshing cylinder and can efficiently discharge a processed product from a discharge port of a rethreshing treatment case. Objective.
Further, the present invention provides a threshing apparatus and a combine that can stably support a treatment cylinder for rethreshing the second reduced product and efficiently discharge a treatment product from an outlet of a threshing treatment case for supporting the treatment cylinder. Provision is for other purposes.

  In order to achieve the above object, the present invention is a hollow rethreshing treatment case to which a processed product to be rethreshed is supplied, and the first end on the upstream side in the conveying direction is located outside the threshing device. And a rethreshing treatment case disposed so that the second end portion on the downstream side in the conveying direction is located inside the threshing device, and the rethreshing treatment in a state of being rotationally driven about an axis by a driving source. A re-threshing treatment cylinder inserted in the case, wherein the re-threshing treatment cylinder is provided on the first end side, and a second bearing part is provided on the second end side. The threshing processing apparatus is configured to be supported by both ends by the threshing processing case, and is protruded radially inward from the inner peripheral surface to support the second bearing portion in the threshing processing case. A plate portion is provided, and the plate portion is located below the rotation direction of the rethreshing cylinder. At least a part including the end on the side is substantially parallel to the dust feeding valve provided on the inner peripheral surface of the rethreshing processing case in a plan view or the rotation direction of the rethreshing cylinder relative to the dust feeding valve There is provided a rethreshing apparatus that is formed so as to be separated as it goes downstream.

Preferably, when viewed along the axial direction of the threshing processing cylinder, the plate portion is upstream of the processing cylinder in the rotation direction of the dust feeding valve from the downstream end of the processing cylinder in the rotation direction. Can be arranged.
More preferably, when viewed along the axial direction of the rethreshing cylinder, the end of the plate portion on the downstream side in the rotation direction of the processing cylinder ends at the substantially center in the circumferential direction of the dust feeding valve. Can be configured.

  In the various aspects, preferably, the plate portion includes a base portion connected to an inner peripheral surface of the threshing processing case, and a tip portion that extends radially inward from the base portion and supports the second bearing portion. And an end portion on the upstream side in the rotation direction of the processing cylinder in the plate portion has a transition region from the base portion to the tip portion. When viewed along the axial direction of the processing cylinder, it may have a concave shape that opens downward.

  For example, the plate portion is a first plate member fixed to an inner peripheral surface of the threshing processing case, and a second plate member detachably connected to the first plate member, the second bearing And a second plate member that supports the portion.

Moreover, this invention provides the threshing apparatus in which the said threshing processing apparatus is provided in the 2nd reduction | restoration path | route.
Moreover, this invention provides the combine in which the said threshing processing apparatus is provided in the 2nd reduction | restoration path | route.

  As described above, according to the present invention, the first bearing portion and the second bearing portion that respectively support the threshing cylinder are provided on the upstream side and the downstream side in the conveyance direction of the threshing case, and the second bearing is provided. The plate portion that supports the portion is at least partially including the end portion on the downstream side in the rotation direction of the rethreshing cylinder, and is substantially the same as the dust feeding valve provided on the inner peripheral surface of the rethreshing treatment case in plan view. Since it is formed so as to be parallel or separated toward the downstream side in the rotation direction of the rethreshing cylinder with respect to the dust feed valve, the rethreshing cylinder is supported at both ends by the first and second bearing portions. The discharge path width of the processed material conveyed along the axial direction of the rethreshing cylinder by being guided by the dust feeding valve is prevented as much as possible from being narrowed by the presence of the second bearing portion. it can. Therefore, the rethreshing cylinder can be stably supported and the processed product can be efficiently discharged from the outlet of the rethreshing processing case.

  When viewed along the axial direction of the threshing processing cylinder, the plate portion is disposed on the upstream side in the rotation direction of the processing cylinder with respect to the downstream end of the processing cylinder in the rotation direction of the dust feeding valve. If comprised in this way, the guide effect | action of the processed material by the said dust delivery valve can be maintained effectively.

  The plate portion is a base portion connected to the inner peripheral surface of the threshing treatment case, and a tip portion that extends radially inward from the base portion to support the second bearing portion, and is wider than the base portion. And the shape of the end portion of the plate portion on the upstream side in the rotation direction of the processing cylinder in the axial direction of the threshing processing cylinder is configured to extend from the base portion to the distal end portion. If it is made into the concave shape opened downward in the transition area | region to this, even if the processed material to which the rethreshing cylinder is caught on the said plate part, this processed material can be dropped below with dead weight. Therefore, the clogging phenomenon of the processed material due to the plate portion can be effectively prevented.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 3 are a perspective view, a side view, and a front view, respectively, of a combine 1 to which an embodiment of the present invention is applied.
FIG. 4 shows a schematic transmission diagram of the combine 1.

  As shown in FIGS. 1 to 4, the combine 1 includes a machine frame 2, a drive source 9 supported by the machine frame 2, and a pair of left and right crawler type travelings connected to the machine frame 2. An apparatus 10, a transmission 3 that changes the rotational power from the drive source 9 and outputs it to the pair of crawler type traveling apparatuses 10, and is supported by the machine frame 2 so as to be movable up and down in front of the machine frame 2. The cutting / conveying device 30, the feed chain device 20 that conveys cereals harvested by the harvesting / conveying device 30 to the rear on the left side of the machine frame 2, and the grains that are conveyed by the feed chain device 20 A threshing apparatus 100 including a threshing unit 110 that performs a threshing process on the straw and a sorting unit 200 that selects a grain from the thresh threshed by the threshing unit 110 A driver's seat 5 disposed in the right front portion of the machine frame 2 and a Glen tank 6 for storing the grains selected by the threshing device 100, disposed behind the driver's seat 5. It includes a Glen tank 6 and a rethreshing processing device 500 for rethreshing a part of the sorted product sorted by the sorting unit 200.

The reaping / conveying device 30 includes a reaping portion 31 for reaping cereals and a transporting portion 36 for transporting the cereals harvested by the reaping portion 31 to the feed chain device 20.
The cutting part 31 includes a pulling mechanism 32 including a pulling case and a pulling tine, a weed plate 33 protruding forward from a lower part of the pulling case, and a cutting blade 34 disposed behind the pulling case. have.
The conveyance unit 36 includes an upper conveyance mechanism and a vertical conveyance mechanism, and is configured to inherit the harvested cereal stocks to the feed chain device 20.

The feed chain device 20 is configured to convey the culm backward with the culm tip being threshed by the handle 130 described below.
The said Glen tank 6 is comprised so that the 1st thing sorted by the said threshing apparatus 100 and gathered up to the following 1st basket 400 may be stored.
Specifically, the first grain collected in the first culm 400 is carried into the Glen tank 6 via the first conveyor 11 and the cereal conveyor 12 (see FIG. 4).
In addition, as shown in FIGS. 1-4, the grain stored in this Glen tank 6 inherits a grain from the lower conveyor 6a provided in the bottom part of this Glen tank 6, and this lower conveyor 6a. Via a vertical conveyor 6b inserted in the vertical discharge auger 7 so as to be conveyed upward, and a discharge conveyor 6c inserted in the horizontal discharge auger 8 so as to inherit the grains from the vertical conveyor 6b, It is supposed to be discharged.

  The threshing sorting device 100 is disposed below the threshing unit 110 that performs threshing processing on the cereals conveyed backward by the feed chain device 20, and threshing by the threshing unit 110. And the sorting unit 200 for sorting the grains from the shed cereal that flows down.

FIG. 5 shows a left side view of the combine 1 with the left side plate removed.
As shown in FIGS. 4 and 5, the threshing unit 110 includes a handling chamber 120 defined by a threshing machine frame, and a handling cylinder that is driven to rotate around a rotation axis along the vehicle longitudinal direction in the handling chamber 120. 130 and a handling cylinder receiving net (not shown) disposed below the handling cylinder 130.

  The sorting unit 200 swings with the rotation of the swinging shaft 201 (see FIG. 4), and swings a sorting mechanism 210 that performs specific gravity sorting by being swung, and sends a sorting wind to the swinging sorting mechanism 210. And a wind sorting mechanism 300 that discharges the sorted wind to the outside of the machine, a first bowl 400 disposed at a position below the swing sorting mechanism 210, a lower portion of the swing sorting mechanism 210, and the one And a second guard 450 disposed behind the guard 400.

  The swing sorting mechanism 210 includes a pair of left and right swing side plates 211a and 211b and a feed pan 220 disposed between the pair of swing side plates 211 so as to receive threshing flowing down from the threshing portion 110. And cereals flowing down from the threshing unit 110 and cereals sent from the feed pan 220, and arranged between the pair of oscillating side plates 211 so as to oscillate and select the grains from the cereals. A chaff sheave mechanism 230 is provided, and a stroller mechanism 240 disposed between the pair of swing side plates 211 so as to be arranged in series behind the chaff sheave mechanism.

The left and right swing side plates 211a and 211b are integrated with a side wall body 212 extending substantially over the entire vehicle longitudinal direction of the swing sorting mechanism 210 and below the rear end of the side wall body 212 by welding or the like. And auxiliary side walls 213.
In FIG. 5, in order to clarify the internal structure of the swing sorting mechanism 210, the side wall body 212 in the left swing side wall 211a is omitted.

The feed pan 220 is configured to convey the threshing flowing down from the threshing unit 110 toward the chaff sheave mechanism 230 toward the vehicle rear side while diffusing in the vehicle width direction.
Specifically, the feed pan 220 is a plate whose upper surface is formed in a wave shape.

  As shown in FIG. 5, the chaff sheave mechanism 230 performs specific gravity sorting on the cereals flowing down from the threshing unit 110 and the cereals sent from the feed pan 220, and a part of the cereals are moved downward. It is comprised so that it may be made to flow down as the first thing to the said most ridge 400 located in.

Specifically, the chaff sheave mechanism 230 is a plurality of fins extending in the vehicle width direction between the pair of swing side plates 211a and 211b, and a plurality of fins that are arranged in parallel in the vehicle front-rear direction with a gap therebetween. It has fins, and the grains subjected to specific gravity selection fall through the interval to the first straw 400 disposed below.
The plurality of fins can be integrally swung around a pivot shaft along the vehicle width direction in a rearward inclined state where the lower end portion is located on the vehicle front side with respect to the upper end portion. The opening width of the interval can be adjusted by changing the inclination angle by a mechanism (not shown).

  The Strollac mechanism 240 performs specific gravity selection on the cereals sent from the chaff sheave mechanism 230 and causes a part of the cereals to flow down as a second thing to the second basket 450 located below. In the threshing, a large unnecessary material such as waste is conveyed outside the machine.

Specifically, the Strollac mechanism 240 is a plurality of plate-like members 241 that extend in the vehicle front-rear direction with the plate surface substantially along the vertical direction, and are arranged in parallel in the vehicle width direction with a space therebetween. It has a plurality of plate-like members, and through the interval, a small cereal such as a grain with a branch-branch or a grain of ears among the cereals is dropped as a second item to the second cocoon 450 It has become.
Each of the plurality of plate-like members has an upper surface formed in a wave shape, thereby promoting the rearward transfer of a large unnecessary object such as waste.

  In the present embodiment, the swing sorting mechanism 210 further includes a grain sheave mechanism 250 between the chaff sheave mechanism 230 and the first hook 400 in the vertical direction. The grain sheave mechanism 250 further selects the sorting material flowing down from the chaff sheave mechanism 230, and is formed of, for example, a net-like body.

The first basket 400 is formed in a concave shape in a side view disposed below the swing sorting mechanism 210 so that the first items sorted by the sorting unit 200 can be collected.
The first object aggregated in the first container is operatively connected to the first conveyor 11 disposed in the first aggregate space along the vehicle width direction and the downstream end in the transport direction of the first conveyor. It is accommodated in the said Glen tank 6 via the cereal conveyor 12 (refer FIG. 4) inserted by the cereal cylinder 13 (refer FIG. 6 below) in the state made.

As shown in FIG. 5, the second basket 450 has a concave shape in a side view disposed below the swing sorting mechanism 210 so that the second items sorted by the sorting unit 200 can be collected. ing.
The second item aggregated in the second cage 450 is disposed at the downstream end of the second conveyor 15 in the transport direction of the second conveyor 15 and the second conveyor 15 disposed along the vehicle width direction in the second aggregation space. It is supplied to the threshing processing device 500 through the second reduction conveyor 16 inserted in the reduction cylinder 17 (see FIG. 6 below) in an operatively connected state (see FIG. 4).

The wind sorting mechanism 300 is configured to send the sorting wind to the swing sorting mechanism 210, and the sorting wind can promote the sorting of the grains by the swing sorting mechanism 210. Yes.
Specifically, as shown in FIG. 5, the wind sorting mechanism 300 includes a red fan 310 that sends a sorting wind that passes from the front lower side to the rear upper side with respect to the swing sorting mechanism 210.

  The tang fan 310 is configured to be rotationally driven by the tang fan drive shaft 311 along the vehicle width direction in front of and below the chaff sheave mechanism 230.

Specifically, the tang fan 310 is disposed in a space defined by both side plates of the threshing machine frame and a tang fan case 320 (see FIG. 5) with an opening at the rear, The sorting air can be sent upward.
More specifically, as shown in FIG. 5, the tang fan case 320 includes a tang fan case body 321 surrounding the tang fan 310, a front end portion fluidly connected to the tang fan case body 321 and a rear end portion. And a hollow air passage case 322 opened obliquely rearward.
The side plate of the threshing machine frame is provided with a suction port for sucking air into the tang fan 310.

  Further, in the present embodiment, as shown in FIG. 5, in addition to the above configuration, the wind sorting mechanism 300 is disposed above and below the swinging sorting mechanism 210 on the upstream side in the flow direction of the sorting wind. An upper wind direction plate 331 and a lower wind direction plate 332 are provided so that the selected wind from the tang fan 310 can be divided into an upper wind, an intermediate wind, and a lower wind.

In the present embodiment, as shown in FIG. 5, the wind sorting mechanism 300 further includes the swing sorting mechanism 210 so as to suck the suction wind from the tang fan 310 and discharge it outside the apparatus. A suction fan 350 is provided above.
The suction fan 350 is rotationally driven by a rotation shaft 351 along the vehicle width direction.
In the figure, reference numerals 360 and 370 denote an upper fan cover member and a lower fan cover member that cover the upper and lower sides of the suction fan 350, respectively.

  Reference numeral 40 in FIG. 4 is a waste transporting device that inherits the waste after threshing from the feed chain device 20 and transports the waste to the rear. Reference numeral 50 in FIGS. This is a waste cutting device that cuts the waste conveyed to the vehicle rear side by the saddle conveying device 40.

  FIG. 6 shows a right side view of the combine 1. 7 to 9 show a front view, a front perspective view, and a rear perspective view in the vicinity of the rethreshing processing apparatus 500, respectively. Furthermore, the front view of the state which removed the following rethreshing processing case 510 in the said rethreshing processing apparatus 500 in FIG. 10 is shown.

As described above, the rethreshing processing device 500 is configured to rethresh the selected material selected by the threshing device 100. In the present embodiment, the rethreshing processing device 500 is provided in the second reduction path. Yes.
That is, as shown in FIGS. 6 to 9, the rethreshing processing device 500 rethreshs the second product supplied from the downstream end portion (upper end portion) of the reducing cylinder 17 in the conveying direction, and the threshing device 100 of the sorting units 110 are configured to be discharged.

As shown in FIG. 7 to FIG. 10, the threshing processing device 500 includes a threshing processing case 510 to which a processed material (second item in the present embodiment) to be threshed is supplied, and the drive source 9. (See FIG. 4), the rethreshing cylinder 600 inserted in the rethreshing processing case 510 in a state where it is operatively rotated about the axis, and the fixed teeth 610 provided in the rethreshing processing case 510. The rethreshing cylinder 600 is provided with processing teeth 620 provided in a protruding state radially outward so as to rethresh the processed material in cooperation with the fixed teeth 610.
In addition, the code | symbol 900 in FIG.7 and FIG.10 is a guide plate for guiding the processed material scattered upwards among the processed materials discharge | released in the said threshing apparatus 100 from the said rethreshing processing apparatus 500. FIG. .

  As shown in FIGS. 7 and 10, the threshing processing case 510 has one end located on the right outer side of the threshing device 100 and the other end inside the threshing device 100 with respect to the vehicle forward direction. It is arrange | positioned along the vehicle width direction so that it may be located in.

FIG. 11 and FIG. 12 show perspective views of the rethreshing processing device 500 viewed from the outside and the inside in the vehicle width direction, respectively.
As shown in FIGS. 10 to 12, the threshing treatment case 510 is connected to the case body 520 so as to close the hollow case body 520 and the opening of the case body 520 on the outer side in the vehicle width direction. An end wall portion 530 and a plate portion 550 connected to the inner peripheral surface of the case main body 520 on the inner side in the vehicle width direction of the case main body 520.

In the case body 520, an opening on the inner side in the vehicle width direction of both end openings is used as a discharge port 512 for discharging a processed product into the threshing apparatus 100, and the conveying direction of the reducing cylinder 17 is partially formed on the upper surface. It has an inlet 511 to which the downstream end is connected.
11 and 12 is a mounting flange integrated with the outer peripheral surface of the case main body 520. The case main body 520 touches the mounting flange 525 against the outer surface of the threshing machine frame. It is connected to the threshing device 100 from the outside in a contact state.

The end wall portion 530 supports a first bearing portion 540 that supports the outer end side in the vehicle width direction of the rethreshing cylinder 600.
On the other hand, the plate portion 550 supports a second bearing portion 590 that supports the inner end side in the vehicle width direction of the rethreshing cylinder. Details of the plate portion 550 will be described later.

  In FIG. 13, the vertical front view of the said threshing processing apparatus 500 is shown. FIG. 14 is a perspective view of a cross section taken along line XIV-XIV in FIG. Further, FIG. 15 shows an end view of the rethreshing apparatus 500 as viewed from the inner end side in the vehicle width direction.

As shown in FIGS. 13 to 15, the fixed teeth 610 are provided so as to protrude radially inward from the inner surface of the case body 520.
In the present embodiment, the threshing processing device 500 includes a fixed dentition including a plurality of fixed teeth 610 arranged in parallel with a gap in the axial direction of the threshing processing drum 600. A plurality of 600 are provided in the circumferential direction.
In the illustrated form, the fixed dentition has three fixed teeth 610 (see FIG. 14), and three sets of the fixed dentition are provided in the circumferential direction of the rethreshing cylinder 600 (see FIG. 14). 15).

  16 and 17 are a front view and a perspective view of the rethreshing cylinder 600, respectively. Moreover, in FIG. 18, the expansion | deployment schematic diagram of this rethreshing processing cylinder 600 is shown. 16 and 17 show the fixed teeth 610 and the following dust feed valve 650 provided in the rethreshing processing case 510 for reference, and only the fixed teeth 610 are shown in FIG. Is also shown.

The treated teeth 620 are configured to rethresh the treated product in cooperation with the fixed teeth 610 as the rethreshing barrel 600 rotates.
In the present embodiment, the processing tooth 620 is provided at a position different from the fixed tooth 610 with respect to the axial position of the threshing processing cylinder 600 (see FIGS. 13 and 16 to 18), and The rotation trajectory of the processing teeth 620 overlaps with the fixed teeth 610 when viewed along the axial direction of the rethreshing cylinder 600 (see FIG. 15).
By providing such a configuration, the processing teeth 620 and the fixed teeth 620 work together with the rotation of the rethreshing processing drum 600 around the axis so that the second thing can be efficiently rethreshed.

Preferably, the processing teeth 620 and the fixed teeth 610 are arranged so as to be orthogonal to the axial direction of the rethreshing cylinder 600 as shown in FIGS. 16 and 18.
By providing such a configuration, the processing teeth 620 and the fixed teeth 610 can be effectively brought into contact with the processed material conveyed in the axial direction of the rethreshing cylinder 600.

As shown in FIGS. 13 and 15 to 17, the rethreshing processing apparatus 500 further includes a dust feeding valve 650 on the inner surface of the rethreshing processing case 510.
The dust feed valve 650 is configured to release the processed material introduced into the threshing processing case 510 from the charging port 511 in the vehicle width direction inner end side of the case 510 with the rotation of the threshing processing cylinder 600. Guide to the exit 512.
That is, the processed material introduced into the case 510 at the outer end side in the vehicle width direction of the rethreshing processing case 510 from the input port 511 is caused by centrifugal force accompanying rotation around the axis of the rethreshing processing cylinder 600. It is moved radially outward to the vicinity of the inner surface of the case 510, and is guided to the inner side in the vehicle width direction along the axial direction of the threshing cylinder 600 by receiving a guide action by the dust feed valve 650. .

  Specifically, as shown in FIGS. 16 and 17, the dust feed valve 650 is disposed on the downstream side in the conveyance direction of the processed material as it goes downstream in the rotational direction R of the rethreshing cylinder 600 (in the present embodiment). Is inclined with respect to the axial direction of the rethreshing cylinder 600 so as to be positioned on the inner side of the rethreshing cylinder 600 in the vehicle width direction.

Further, in the present embodiment, the rethreshing apparatus 500 has a screw conveyor 630 on the outer surface of the rethreshing cylinder 600.
As shown in FIGS. 14 and 16 to 18, the screw conveyor 630 includes the rethreshing cylinder 600 in a region including a position where the processing teeth 620 are provided with respect to the axial position of the rethreshing cylinder 600. It is provided so that a processed product (second product) can be conveyed along with the rotation around the axis.
Specifically, the screw conveyor 630 has a spiral shape that advances in a direction opposite to the rotation direction R of the threshing treatment cylinder 600 from the upstream side to the downstream side in the conveyance direction of the processed material.

The re-threshing processing apparatus 500 includes the screw conveyor 630 so as to improve the conveying ability of the processed material and the threshing capability of the processed material.
That is, the processed material is conveyed using the dust delivery valve 650 as described above. In other words, the processed product put into the rethreshing processing case 510 is moved to the vicinity of the inner surface of the case 510 by the centrifugal force accompanying the rotation of the rethreshing processing drum 600 around the axis, and the dust feeding valve 650 Under the guide action, the rethreshing cylinder 600 is conveyed in the axial direction.
Therefore, for example, when a large amount of processed material is thrown into the rethreshing processing case 510 or when the charged processed material contains moisture, a part of the processed material is part of the rethreshing cylinder 600. If it remains in the vicinity of the outer surface, it will not be possible to receive the guide action by the dust feed valve 650, and the processed material will start to stay with respect to the axial position of the rethreshing cylinder 600. . Such retention of the processed material naturally deteriorates the threshing capacity.

On the other hand, in the present embodiment, the processed material moved radially outward to the vicinity of the inner surface of the rethreshing treatment case 510 by the centrifugal force accompanying the rotation of the rethreshing drum 600 is the dust sending While being guided in the axial direction by the action of the valve 650, the processed product located near the outer surface of the threshing cylinder 600 can be conveyed in the axial direction by the screw conveyor 630.
Therefore, even when a large amount of processed material is put into the rethreshing processing case 510 or when the charged processed material contains moisture, the processed material can be efficiently conveyed, Ability can be maintained.

  Furthermore, since the screw conveyor 630 is provided in a region including the position where the processing teeth 620 are provided with respect to the axial position, the threshing action by the processing teeth 620 and the fixed teeth 610 can be performed without stagnation. receive. Therefore, the threshing ability can also be improved as compared with the prior art.

  In the present embodiment, the screw conveyor 630 is provided so as to straddle the fixed teeth 610 with respect to the axial position. Accordingly, the heights of the screw conveyor 630 and the fixed teeth 610 are set so that the rotation trajectory of the screw conveyor 630 does not overlap the fixed teeth 610.

  In this Embodiment, as shown in FIGS. 16-18, the said threshing processing apparatus 500 further has the joint blade | wing 640 and the sending blade | wing 645 which were provided in the outer surface of the said threshing processing cylinder 600. FIG. ing.

The splicing blade 640 feeds the processed material supplied from the second reduction conveyor 16 through the input port 511 from the outer side in the vehicle width direction of the rethreshing cylinder 600 toward the inner side in the vehicle width direction. As described above, the screw conveyor 630 is located on the outer side in the vehicle width direction.
The delivery blade 645 releases the processed material conveyed by the screw conveyor 630 and the dust delivery valve 650 from the discharge port 512 on the inner side in the vehicle width direction of the rethreshing processing case 510 into the threshing apparatus 100. The screw conveyor 630 is located on the inner side in the vehicle width direction.
Preferably, both the connecting blade 640 and the delivery blade 645 are configured to be higher than the screw conveyor 630 as shown in FIGS. 16 and 17.

In this embodiment, as shown in FIGS. 16 to 18, the splicing blade 640 is in a direction opposite to the rotational direction R of the threshing cylinder 600 as it goes from the upstream side to the downstream side in the conveyance direction of the processed material. The first splicing blade 640a having a spiral shape and the first splicing blade 640a are located 180 degrees apart in the circumferential direction of the threshing processing drum 600, and are directed from the upstream side to the downstream side in the conveyance direction of the processed material. Accordingly, the second threshing cylinder 600 has a spiral second joint blade 640b that travels in a direction opposite to the rotational direction R of the rethreshing cylinder 600.
Further, the delivery blade 645 has first to third delivery blades 645a to 645c disposed at substantially equal intervals in the circumferential direction of the rethreshing cylinder 600.

Preferably, the splicing blade 640, the screw conveyor 630, and the delivery blade 645 may be formed in a continuous shape.
As described above, in the present embodiment, the joint blade 640 has the first and second joint blades 640a and 640b, and the delivery blade 645 has the first to third delivery blades 645a to 645c. Have.
In such a configuration, the first joint blade 640a, the screw conveyor 630, and the first delivery blade 645a are continuously arranged.

  As described above, in the present embodiment, the processing teeth 620 and the screw conveyer 630 are provided in the rethreshing cylinder 600, thereby improving the workpiece conveying capability, thereby improving the threshing capability. However, as shown in FIG. 18, by providing the processing teeth 620 on the surface to be transported of the screw conveyor 630, it is possible to effectively prevent the processing teeth 620 from inhibiting the conveying capacity of the screw conveyor 630. It is preventing.

As shown in FIGS. 16-18, in this Embodiment, the said threshing processing apparatus 500 has multiple said processing teeth 620. FIG.
In such a case, the plurality of processing teeth 620 are arranged on the non-conveying surface side of the screw conveyor 630 with the rotation direction R of the threshing processing cylinder 600 as it goes from the upstream side to the downstream side in the conveyance direction of the processed material. Are arranged on a spiral going in the opposite direction.

Specifically, in the present embodiment, the rethreshing processing device 500 includes a first processing tooth row that includes a plurality of first processing teeth 620a that are spaced apart from each other in the axial direction and the circumferential direction of the rethreshing processing drum 600. And a plurality of second processing teeth 620b spaced from the corresponding first processing teeth 620a at the same position in the circumferential direction of the threshing processing drum 600 and upstream in the conveying direction of the workpiece in the axial direction. And a second processing tooth row.
The plurality of first processing teeth 620a forming the first processing tooth row are spirally arranged so as to be substantially parallel to the screw conveyor 630 on the non-conveying surface side of the screw conveyor 630, The plurality of second processing teeth 620b forming the second processing tooth row are spirally arranged so as to be substantially parallel to the screw conveyor 630 on the upstream side of the first processing tooth row in the conveyance direction of the processed material. ing.

More preferably, the plurality of first processing teeth 620 a are arranged at equal intervals in the circumferential direction of the threshing processing drum 600.
Similarly, the plurality of second processing teeth 620b are also arranged at equal intervals in the circumferential direction of the rethreshing cylinder 600.

  Note that the non-conveying surface side of the screw conveyor 630 means a region where the material conveying action by the screw conveyor 630 is not substantially performed. For example, the first winding portion 630a and the next portion of the screw conveyor 630 A region closer to the non-conveying surface of the screw conveyor 630 than the intermediate line C with the second winding portion 630b of the step can be exemplified (see FIG. 18).

More preferably, as shown in FIG. 18, the processing teeth close to the non-conveying surface of the screw conveyor 630 among the processing teeth 620 (the first processing teeth 620 a in the present embodiment) are the threshing process. An end 621 located on the downstream side in the rotational direction of the drum 600 may be configured to be connected to the screw conveyor 630.
By providing such a configuration, it is possible to effectively prevent unwanted materials such as dust from being caught between the processing teeth 620a and the screw conveyor 630, and to further improve the processing material conveyance capability.

In the present embodiment, as shown in FIGS. 16 to 18, the first processing teeth 620 a and the screw conveyor 630 are separated from each other. However, instead of this, as shown in FIG. 19, the screw By connecting in series a plurality of units 625 in which one processing tooth 620a close to the non-conveying surface of the conveyor 630 and a fin member 622 connected to the one processing tooth 620a are integrally formed, the first It is also possible to form one processing tooth 620a and the screw conveyor 630.
According to such a configuration, the threshing process is easily performed on the first processing teeth 620a and the screw conveyor 630 without causing a gap between the first processing teeth 620a and the non-conveying surface of the screw conveyor 630. It can be provided on the outer surface of the barrel 600.
In the present embodiment, the first processing tooth row and the second processing tooth row are included. However, it is naturally possible to delete the second processing tooth row.

Next, the plate portion 550 will be described.
20 and 21 show a plan view and a perspective view of the rethreshing cylinder 600, respectively. In FIGS. 20 and 21, the dust delivery valve 650 is also shown for reference.

  As shown in FIGS. 12 and 15, the plate portion 550 is supported by the inner peripheral surface of the case main body 520 at a position near the discharge port 512 of the case main body 520 in the threshing processing case 510. The second bearing portion 590 is supported at the free end portion.

  Specifically, as shown in FIGS. 15, 20, and 21, the plate portion 550 includes at least a part including an end portion 550 </ b> D on the downstream side in the rotation direction R of the rethreshing cylinder 600 in the plan view. The threshing processing cylinder 600 is formed so as to be substantially parallel to the dust feeding valve 650 or to be separated from the dust feeding valve 650 as it goes downstream in the rotational direction R of the threshing processing cylinder 600. The processing object can be efficiently discharged from the discharge port 512 of the rethreshing processing case 510 while stably supporting the inner end in the vehicle width direction.

  That is, in order to stably support the rethreshing cylinder 600, it is preferable to support both the outer end and the inner end of the rethreshing cylinder 600 in the vehicle width direction. The support structure of the inner end of the threshing processing cylinder 600 in the vehicle width direction blocks a part of the discharge port 512.

In this regard, in the present embodiment, the above configuration is adopted by paying attention to the principle of transporting the processed material in the rethreshing processing case 510.
That is, the processed product that has been moved radially outward by the centrifugal force associated with the rotation of the rethreshing cylinder 600 is guided in the axial direction of the rethreshing cylinder 600 by the dust feed valve 650. .
Focusing on this point of view, in the present embodiment, at least a part of the plate portion 550 including the end portion on the downstream side in the rotational direction R of the threshing cylinder 600 is the dust-feed valve in a plan view. It is formed so as to be substantially parallel to 650 or separated from the dust feed valve 650 as it goes downstream in the rotational direction of the rethreshing cylinder 600. The presence of the plate portion 550 that supports the end portion prevents the processing material discharged through the discharge port 512 from being narrowed as much as possible.

That is, if the plate portion 550 is a simple flat plate perpendicular to the axis of the rethreshing cylinder 600, the width of the path P of the processed material discharged through the discharge port 512 is substantially narrowed. become.
On the other hand, as in the present embodiment, at least a part of the plate portion 550 including the end portion on the downstream side in the rotation direction R of the threshing cylinder 600 is substantially the same as the dust feeding valve 650 in a plan view. If it is formed so as to be parallel or separated from the dust feed valve 650 as it goes downstream in the rotational direction of the rethreshing cylinder 600, the width of the path P can be expanded as much as possible (FIG. 20). And FIG. 21).

Preferably, as shown in FIGS. 15, 20, and 21, the end 650 </ b> D on the downstream side in the rotation direction R of the processing cylinder 600 in the dust delivery valve 650 is in the rotation direction of the processing cylinder 600 with respect to the plate portion 550. The dust delivery valve 650 and the plate portion 550 can be arranged so as to be located on the downstream side.
In this way, the end 650D on the downstream side in the rotation direction R of the rethreshing cylinder 600 in the dust feed valve 650 is configured not to overlap the plate section 550 when viewed in the axial direction of the cylinder 600. Thereby, it can prevent more effectively that the said plate part 550 inhibits the flow of the processed material guided by the said dust delivery valve 650. FIG.

  In this embodiment, as shown in FIG. 15 and FIG. 20, when viewed along the axial direction of the threshing processing drum 600, the rotational direction R of the processing drum 600 in the plate portion 550 is on the downstream side. The dust feed valve 650 and the plate portion 550 are formed so that the end portion 550D terminates at a substantially central portion in the circumferential direction of the dust feed valve 650, whereby the processing guided by the dust feed valve 650 is performed. An object is smoothly discharged from the discharge port 512.

  Furthermore, in the present embodiment, the plate portion 550 is stabilized in posture, and the plate portion 550 is narrowed as much as possible in the opening area of the discharge port 512 while the plate portion 550 is closed. In order to effectively prevent the processed material from being caught at 550, the following configuration is adopted.

That is, as shown in FIGS. 12, 15, and 21, the plate portion 550 extends from the base portion 551 to the inner peripheral surface of the threshing processing case 510 and radially inward from the base portion 551. And a tip portion 552 that supports the second bearing portion 590.
The distal end portion 552 is narrower than the base portion 551, and the end portion 550U on the upstream side in the rotation direction R of the processing cylinder 600 in the plate portion 550 is extended from the base portion 551 to the distal end portion 552. The transition area is a concave shape that opens downward when viewed along the axial direction of the processing cylinder 600.

  According to such a configuration, the base portion 551 is widened so that the plate portion 550 is stably fixed to the inner peripheral surface of the case main body 520, and the distal end portion 552 is narrowed to thereby reduce the discharge port. The opening area of 512 can be maintained, and further, the processed material that is rotated along with the rotation of the threshing processing cylinder 600 is caught by the end 550U on the upstream side in the rotation direction R of the processing cylinder 600 in the plate section 550. Even so, the processed material can be dropped by its own weight due to the presence of the downward concave portion. Therefore, the clogging phenomenon of the processed material due to the plate portion 550 can be effectively prevented.

  In the present embodiment, as shown in FIGS. 12, 15, and 20 to 21, the plate portion 550 includes a first plate member 560 fixed to the inner peripheral surface of the case body 520, and A second plate member 570 that is detachably coupled to the first plate member 560, and the second plate member 570 is configured to support the second bearing portion 590.

Next, a rethreshing cylinder driving structure for transmitting the power from the drive source 9 to the rethreshing apparatus 500 will be described.
In the present embodiment, as shown in FIG. 4, the combine 1 has one end operatively connected to the drive source 9 and the other end operative to a barrel drive shaft 131 that drives the barrel 130. A transmission shaft 700 for the connecting barrel is provided.

As shown in FIGS. 4 and 6, the transmission shaft 700 for the barrel is arranged in front of the threshing device 100 in a state where the one end is located on the right side of the threshing device 100 with respect to the vehicle forward direction. It is arranged along the width direction.
The handling cylinder transmission shaft 700 is connected to the endless belt transmission mechanism 205 from the rocking shaft 201 disposed along the vehicle width direction in front of the threshing device 100 and below the handling cylinder transmission shaft 700. It is comprised so that motive power may be input via (refer FIG.4 and FIG.6).

In such a configuration, as shown in FIG. 4, the combine 1 is provided with a counter shaft 720 that is operatively connected to the handling cylinder transmission shaft 700 via an input endless belt transmission mechanism 710.
The driving force is transmitted from the counter shaft 720 to the rethreshing cylinder 600 via the output endless belt transmission mechanism 730.

  As described above, in the present embodiment, the counter shaft 720 is provided so as to be operatively connected to the handle cylinder transmission shaft 700, and the driving force of the threshing processing cylinder 600 is extracted from the counter shaft 720. Thus, when the dust feeding port processing cylinder 150 (see FIGS. 4 and 6) is attached to the combine 1, power transmission to the dust feeding port processing cylinder 150 can be easily performed. Yes.

That is, depending on the specifications, the combine 1 may be provided with the dust feeding port processing cylinder 150 in addition to the main handling cylinder 130 (see FIG. 4). According to the processing cylinder driving structure, the driving force of the dust feeding port processing cylinder 150 can be easily taken out from the counter shaft 720.
Accordingly, when the dust feeding port processing cylinder 150 is attached, the power transmission member is attached to the dust feeding port processing cylinder 150 or when the existing dust feeding port processing cylinder 150 is removed. The power transmission member can be easily removed.

  In the present embodiment, as shown in FIGS. 6 and 8 to 9, the counter shaft 720 is arranged on the vehicle on the right side of the threshing device 100 with respect to the vehicle advance direction and on the vehicle transmission shaft 700. It is arranged along the vehicle width direction at the rear and above the threshing processing apparatus 500.

  In such a configuration, as shown in FIGS. 4, 8, and 9, the input endless belt transmission mechanism 710 is provided at the outer end of the barrel transmission shaft 700 in the vehicle width direction so as not to rotate relative thereto. A handling cylinder side output pulley 711, a counter shaft side input pulley 712 that is provided at the inner end of the counter shaft 720 in the vehicle width direction so as not to rotate relative to the handling cylinder side output pulley 711, and the counter side input pulley 712 The output endless belt transmission mechanism 730 includes a wound input endless belt 713, and the output endless belt transmission mechanism 730 is provided at the outer end in the vehicle width direction of the countershaft 720 so as not to be relatively rotatable. 731, a rethreshing cylinder side input pulley 732 provided at the outer end in the vehicle width direction of the rethreshing cylinder 600, and the countershaft side output pulley 7. It has 1 and said re-threshing processing cylinder side input pulley 732 output endless belt 733 wound on.

  According to such a configuration, the dust supply port processing cylinder 150 is disposed in the space on the right side of the threshing apparatus 100 and the rear upper side of the threshing processing apparatus 500 (see FIG. 6) with respect to the vehicle forward direction. In this case, power can be easily transmitted from the inner end of the counter shaft 720 in the vehicle width direction to the dust feeding port processing cylinder 150 via, for example, a bevel gear mechanism 155 (see FIG. 4).

Further, in the present embodiment, the following configuration is provided in order to stably support the counter shaft 720.
In FIG. 22, the side view of the state which removed the said end wall part 530 and the said reduction | restoration cylinder 17 of the said threshing processing case 510 is shown. 23 and 24 show a front perspective view and a rear perspective view of FIG. 22, respectively.

  As shown in FIGS. 7, 8, 10, and 22 to 24, the combine 1 is rotated about the axis with the counter shaft 720 extending outward at both ends. A counter case 740 that extrapolates and supports freely and a connecting member 750 that connects the counter case 740 to the whipping cylinder 13 are provided.

Specifically, as shown in FIGS. 22 to 24, the counter case 740 includes a case main body 741 in which the counter shaft 720 is inserted, and a counter case side mounting stay 742 integrated with the case main body 741 by welding or the like. And have.
The connecting member 750 is disposed in the rear space of the counter case 740 so that the front end is connected to the mounting stay 742 and the rear end is connected to the cereal cylinder 13.

  Thus, the input endless belt transmission mechanism 710 supports the counter case 740 on the cereal cylinder 13 located on the rear side by the connecting member 750 extending from the counter case 740 to the vehicle rear side. The counter case 740 can be stably supported against the forward tensile force applied to the counter case 740.

  That is, as shown in FIGS. 8, 22, and 23, the handling cylinder side output pulley 711 is disposed on the vehicle front side of the counter side input pulley 712, and the input endless belt 713 includes The tension pulley 714 is acting. Therefore, the counter case 740 that supports the counter shaft 720 is subjected to a tensile force toward the front side of the vehicle. In this embodiment, as described above, the counter case 740 extends from the counter case 740 to the rear side of the vehicle. The counter case 740 is connected to the cereal cylinder 13 located on the vehicle rear side by a connecting member 750, and the connecting member 750 sandwiches the counter case 740 in a direction opposite to the direction in which the tensile force acts. It extends. Accordingly, the counter case 740 can be stably supported against the tensile force.

  Specifically, as shown in FIGS. 22 to 24 and the like, the connecting member 750 is attached to the front mounting plate 751 that can be fastened to the counter case side mounting stay 742 via a bolt or the like, and the cereal cylinder 13. The rear mounting plate 752 that can be fastened to the provided cereal cylinder side mounting stay 14 via a bolt or the like, and the connecting rod 753 that extends between the front mounting plate 751 and the rear mounting plate 752 are integrally provided. ing.

Furthermore, in this Embodiment, it is comprised so that the said counter case 740 may be supported also from the downward direction using the said threshing processing case 510. FIG.
Specifically, as shown in FIGS. 22 to 24, a support member 760 that extends upward is fixed to a portion of the case main body 520 of the rethreshing processing case 510 that is located on the right outside of the threshing device 100. Yes.
The support member 760 is configured to be connected to the connection member 750 in a state where the case body 741 of the counter case 740 is supported from below.
By providing such a configuration, the connecting member 750 and the support member 760 support the counter case 740 from different directions, and the counter case can be supported more stably.

Further, the support member 760 effectively acts against a tensile force generated by the output endless belt transmission mechanism 730.
That is, as shown in FIGS. 8 and 9 and the like, the rethreshing treatment cylinder side input pulley 732 is disposed below the counter side output pulley 731, and the output endless belt 733 includes A tension pulley 734 is acting. Therefore, a downward pulling force acts on the counter case 740 that supports the counter shaft 720. In the present embodiment, as described above, the counter case 740 is moved from below by the support member 760. I support.
Accordingly, the counter case 740 can be stably supported against the downward pulling force.

  Preferably, as shown in FIGS. 23 and 24, the support member 760 can be passed through the member 18 that supports and supports the downstream end (upper end) in the transport direction of the second reduction conveyor 16. The counter shaft 740 can be supported more stably.

FIG. 1 is a perspective view of a combine to which an embodiment of the present invention is applied. FIG. 2 is a side view of the combine shown in FIG. FIG. 3 is a front view of the combine shown in FIGS. 1 and 2. FIG. 4 is a transmission schematic diagram of the combine shown in FIGS. FIG. 5 is a left side view of the combine shown in FIGS. 1 to 3 and shows a state in which the left side plate is removed. FIG. 6 is a right side view of the combine shown in FIGS. FIG. 7 is a front view of the vicinity of the threshing apparatus in the combine shown in FIGS. 8 is a front perspective view of FIG. FIG. 9 is a rear perspective view of FIG. FIG. 10 is a front view of the vicinity of the threshing processing apparatus in a state where the threshing processing case is removed. FIG. 11 is a perspective view of the rethreshing apparatus as viewed from the outside in the vehicle width direction. FIG. 12 is a perspective view of the rethreshing apparatus as viewed from the inside in the vehicle width direction. FIG. 13 is a longitudinal front view of the rethreshing apparatus. 14 is a perspective view of a cross section taken along line XIV-XIV in FIG. FIG. 15 is an end view of the rethreshing apparatus as viewed from the inside in the vehicle width direction. FIG. 16 is a front view of a rethreshing cylinder in the rethreshing processing apparatus, and also shows fixed teeth and a dust feeding valve provided in the rethreshing processing case. FIG. 17 is a perspective view of a rethreshing cylinder in the rethreshing apparatus, and also shows the fixed teeth and the dust feed valve. FIG. 18 is a developed schematic view of the rethreshing cylinder, and also shows the dust feeding valve. FIG. 19 is a developed schematic view of a modified example of the rethreshing cylinder. FIG. 20 is a plan view of the rethreshing cylinder and also shows the dust feeding valve. FIG. 21 is a perspective view of the rethreshing cylinder and also shows the dust feeding valve. FIG. 22 is a side view of the vicinity of the threshing treatment apparatus in a state in which a part of the end wall portion and the reducing cylinder is removed. FIG. 23 is a front perspective view of FIG. 24 is a rear perspective view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 100 Threshing apparatus 500 Rethreshing process apparatus 510 Rethreshing process case 540 1st bearing part 550 Plate part 551 Base 552 Tip part 560 1st plate member 570 2nd plate member 590 2nd bearing part 600 Rethreshing process cylinder 650 Dust valve

Claims (7)

It is a hollow rethreshing treatment case to which a processed product to be rethreshed is supplied, the first end on the upstream side in the conveying direction is located outside the threshing device, and the second end on the downstream side in the conveying direction is the above-mentioned A threshing treatment case disposed so as to be located inside the threshing device, and a threshing treatment cylinder inserted into the threshing treatment case in a state of being rotationally driven around an axis by a driving source. And the rethreshing cylinder is configured to be supported at both ends by a first bearing portion provided on the first end side and a second bearing portion provided on the second end side. A threshing device,
The threshing treatment case is provided with a plate portion projecting radially inward from the inner peripheral surface so as to support the second bearing portion,
The plate portion includes at least a part including an end portion on the downstream side in the rotational direction of the rethreshing cylinder, substantially in parallel with a dust feeding valve provided on an inner peripheral surface of the rethreshing treatment case in plan view, or A rethreshing treatment apparatus, wherein the rethreshing treatment apparatus is formed so as to be separated from the dust feeding valve toward the downstream side in the rotation direction of the rethreshing treatment cylinder.   When viewed along the axial direction of the threshing processing cylinder, the plate portion is disposed on the upstream side in the rotation direction of the processing cylinder with respect to the downstream end of the processing cylinder in the rotation direction of the processing cylinder. The threshing processing apparatus according to claim 1, wherein   When viewed along the axial direction of the rethreshing cylinder, the end of the plate section on the downstream side in the rotational direction of the processing cylinder is configured to end at the approximate center in the circumferential direction of the dust feeding valve. The threshing process according to claim 2 characterized by things. The plate portion has a base portion connected to the inner peripheral surface of the rethreshing treatment case, and a tip portion that extends radially inward from the base portion and supports the second bearing portion,
The tip is narrower than the base,
The end of the plate portion on the upstream side in the rotation direction of the processing cylinder has a concave shape that opens downward when the transition region from the base portion to the tip portion is viewed along the axial direction of the processing cylinder. The threshing processing apparatus according to any one of claims 1 to 3, wherein   The plate portion is a first plate member fixed to an inner peripheral surface of the rethreshing treatment case, and a second plate member detachably connected to the first plate member, wherein the second bearing portion is The threshing processing apparatus according to any one of claims 1 to 4, further comprising a second plate member to be supported.   A threshing apparatus, wherein the rethreshing apparatus according to any one of claims 1 to 5 is provided in a second reduction path.   A combine, wherein the rethreshing apparatus according to any one of claims 1 to 5 is provided in a second reduction path.