JPH08308365A - Combine harvester - Google Patents

Abstract

PURPOSE: To provide a combine harvester capable of performing operations while automatically preventing defective threshing from occurring even when any of stems and culms having long and short culms are reaped. CONSTITUTION: This combine harvester is capable of regulating a dust feeding valve 40a to an opening and a closing sides in a threshing chamber with an electric motor M, making the dust feeding valve 40a guide and act on threshing treated materials helically transferred to the rear end side of a threshing cylinder by rotation of the threshing cylinder 33, changing the helical transfer direction and thereby changing the time for the threshing treated materials to stay in the threshing chamber. When the first reaping and pretreating device 10 for harvesting short culms capable of cutting planted stand stem and culms at plant feet and feeding the whole reaped stems and culms to the threshing chamber is replaced with the second reaping and pretreating device 20 for harvesting long culms capable of reaping the planted stand stems and culms at the plant feet and feeding only parts of ear tip sides in the reaped stems and culms to the threshing chamber, the electric motor M is automatically operated based on sensed results whether either of the first reaping and pretreating device 10 and the second reaping and pretreating device 20 is connected. Thereby, the dust feeding valve 40a is automatically regulated to the opening and closing sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The first aspect of the present invention is to cut a planted stem culm at the base of a plant and supply the whole cut culm to the threshing section.
A cutting pretreatment device and a second cutting pretreatment device that cuts the plant base of the planted stem culm and divides the cut culm into a tip side portion and a stem side portion, and supplies the tip side portion to the threshing section. And a pretreatment device connecting portion that is exchangeably connected to each other, and the threshing portion is transferred to the rear end side of the threshing unit by a slinging drum that introduces the entire threshing target to be supplied into the handling chamber and rotates. However, the present invention relates to a combine configured to perform a handling process.

[0002]

2. Description of the Related Art In the above combine, a first cutting pretreatment device is connected or a second cutting pretreatment device is connected in place of the first cutting pretreatment device according to the culm length of the planted stem culm. By doing so, the harvesting work can be carried out regardless of the culm length of the planted stem culms, while allowing the plowing after the mowing to be advantageous and the threshing treatment to be advantageous. .

That is, when cutting the planted stem culm, only the tip side part is cut off, and if the culm side part remains in the plant part, the culm side part which extends from the plant part when performing plowing work later. Is an obstacle to work. In addition, when the cutting culm is supplied to the threshing section and the threshing process is performed, if the amount of the threshing products to be introduced into the handling room is too small, the handling effect due to the interlocking of the threshing products and the working efficiency of the handling barrel will increase. And the threshing performance deteriorates. Moreover, even if the amount of threshing processed material introduced into the handling room is too large, clogging of the threshing processed material occurs and the threshing performance deteriorates. Therefore, when the culm length of the planted stem culm is standard or shorter than that, the first cutting pretreatment device is connected to work. Then, the planted stems are cut off at the base of the stock, and only the stock portion remains after the cut, so that it is possible to work while facilitating the subsequent tilling work.
In addition, the whole cutting stem culm is supplied to the threshing section and both the tip side part and the stem side part of the cutting stem culm are introduced into the handling room, so that the stalks further introduced into the handling room. Since the side part is of standard length or stalks shorter than that, and not so long, the amount of threshed material in the handling room is
The handling effect is obtained by the interlocking of the threshed products, and the handling cylinder has an appropriate amount for efficient handling. Therefore, the work can be performed while the threshing process is performed well. When the culm length of the planted stem culm is longer than the standard length, the second cutting pretreatment device is connected to work. Then, the planted stems are cut off at the base of the stock, and only the stock portion remains after the cut, so that it is possible to work while facilitating the subsequent tilling work. Further, in this case, when both the tip side portion and the culm side portion of the planted stem culm are introduced into the handling room, the threshing side portion is considerably long, and thus many threshing-treated products are present in the handling room. It is easy to get clogged because it enters too much, but by introducing only the tip side part of the planted stem culm into the handling room, it is possible to work while preventing the threshing processed material from clogging in the handling room. Of.

In addition, when harvesting long culm, the amount of threshed grains to be treated in the handling chamber is smaller than when standard or short culms are harvested, so that the handling effect due to the interlocking of threshing treated products and the working efficiency of the handling barrel are reduced. And threshing may be insufficient. Therefore, conventionally, the dust transfer valve that guides the threshing processed material transferred to the rear end side of the processing cylinder by the turning force of the processing cylinder can be adjusted to the open side and the closed side with respect to the processed material transfer direction. In preparation for this, when connecting the first mowing pretreatment device to work, the dust-feed valve is manually adjusted to the open side, and the second
When connecting the mowing pretreatment device to work, the dust sending valve was manually adjusted to the closing side. In other words, if the dust transfer valve is adjusted to the closed side, the threshing treatment product will move to the rear end side of the handling cylinder and reach the dust outlet for a long time, so that the threshing treatment product will stay in the handling chamber. The processing time becomes longer. When the amount of threshing processed material in the handling chamber is small and the threshing performance is deteriorated due to a decrease in the handling effect due to the interlocking of the threshing treated products or the operating efficiency of the handling barrel, the threshing treated product stays in the handling chamber and is processed. When the time for which the threshing process is performed is made longer, the lack of threshing caused by the insufficient amount of the threshed product can be compensated by the increase of the handling time due to the increase of the residence time. Therefore, the amount of threshed products in the handling chamber becomes appropriate, and the threshing treated product stays in the handling chamber during the harvesting of standard or short culm, in which the handling action by the interlocking of the threshing treated products and the handling action by the handling barrel are sufficiently obtained. The dust-feeding valve is adjusted to the open side so that the operating time becomes shorter, and excessive handling due to the handling processing time of the threshing processed material is prevented. Then, the amount of threshed products in the handling chamber becomes small and the handling effect due to the interlocking of the threshed products and the working efficiency of the handling barrel decrease. During harvesting of the long culm, the threshing treated product stays in the handling chamber for a long time. Thus, the dust feeding valve is adjusted to the closing side to prevent the insufficient handling due to the insufficient amount of threshed material.

[0005]

Conventionally, when the length of the stem culm to be harvested is changed and the first cutting pretreatment device and the second cutting pretreatment device are replaced, the dust feeding valve is opened each time. The troublesome work of adjusting to the closed side or the closed side was required. It is an object of the present invention to enable any type of planted stem culm, long and short culm, to be worked while automatically preventing excess and deficiency of the handling process.

[0006]

In order to achieve the object of the present invention, the present invention provides a combine valve described at the beginning of a dust delivery valve for guiding a threshing material transferred to the rear end side of the handling cylinder by the handling cylinder. A detection mechanism provided in the handling chamber so as to be adjustable between an open side and a closed side with respect to the processed material transfer direction, and detecting which of the first cutting pretreatment device and the second cutting pretreatment device is connected, Further, the apparatus further comprises a processed material transfer control means for opening and closing the dust feed valve, and when the detection mechanism detects connection of the first pre-mowing processing device, the processed material transfer control means outputs information from the detection mechanism. Based on the information, the dust transfer valve is automatically operated to the open side, and when the detection mechanism detects the connection of the second pre-mowing treatment device, the processed material transfer control means is based on the information from the detection mechanism. Dust valve Wherein the Flip state automatically operated side the processed product transport control means are in conjunction with the detection mechanism.

[0007]

When the first cutting pretreatment device is connected, the dust transfer valve is automatically opened so that the dust transfer valve is automatically operated by the processed material transfer control means based on the information from the detection mechanism. Adjust the residence time of the threshed product to a shorter time. As a result, the threshing material to be introduced into the handling room is processed well by the handling action due to the interlocking of the processed materials and the handling processing by the handling barrel. By being transferred to the end side, overhandling is less likely to occur as a whole. When the second cutting pretreatment device is connected, the dust transfer valve automatically closes due to the automatic operation of the dust transfer valve by the processed material transfer control means based on the information from the detection mechanism, and the threshing process in the handling chamber is performed. Adjust the material retention time to a longer time. As a result, even if the threshing material to be introduced into the handling room is difficult to handle depending on the handling action due to the interlocking of the processed materials and the handling processing by the handling barrel, it takes a relatively long time to move the handling room inside the handling barrel. By being transferred to the rear end side and treated, it is less likely that insufficient handling will occur as a whole.

[0008]

When the first cutting pretreatment device and the second cutting pretreatment device are replaced with each other, the dust sending valve is connected at a time corresponding to the cutting pretreatment device to which the time during which the threshing processed material stays in the handling chamber is linked. Therefore, when harvesting stalks with a standard length or shorter culm than this, or when harvesting stalks with a longer stalk than the standard length, handle it appropriately so that threshing failure does not occur. Now I can work.
Moreover, since the dust-sending valve is automatically adjusted, it is possible to work easily simply by replacing the cutting pretreatment device.

[0009]

EXAMPLE As shown in FIG. 1, a crawler type traveling device 1,
In the front part of the traveling machine equipped with the operating cabin 2, the first cutting pretreatment device 10 for cutting planting stem culms such as rice and wheat is oscillated up and down around the axis P1 and by the lift cylinder C1. A threshing device 30 that is equipped to be moved up and down and threshes the cut stalks from the first mowing pretreatment device 10, and a grain tank configured such that the threshing grains from this threshing device 30 are supplied by the bucket conveyor 3. Four
Is provided in the traveling machine body, and the grain stored in the grain tank 4 is configured to be carried out by the unloader 5 to form a combine.

As shown in FIGS. 1 and 2A, the first cutting pretreatment device 10 includes a lift cylinder C for the traveling machine body.
By connecting to the front end portion of the conveyor device 6 which is connected so as to swing up and down around the axis P1 by 1, the traveling machine body is connected so as to be lifted and lowered by the lift cylinder C1. The first mowing pretreatment device 10 includes a pretreatment frame 11 connected to the front end of the conveyor device 6, a clipper-type mowing device 12 and a front conveyor 13 located inside the pretreatment frame 11.
And platform auger 14, pretreatment frame 1
The divider 1 is provided with a support reel 15 extending from the support reel 15 that is supported by the drive rotation itself and attached to both sides of the front end of the pretreatment frame 11.
The planted culm is divided into the stalks to be cut and the stalks not to be cut by 7 and the tip of the planted culm from the divider 17 is scraped by the rotating reel 16 toward the rear side of the machine body and from the divider 17. The root of the planted stem culm is mowed by the reaping device 12, and the stalk culm from the reaping device 12 is supplied to the platform auger 14 by the front conveyor 13, and the platform auger 14 constitutes the bottom plate portion of the pretreatment frame 11. It is configured to be conveyed in the lateral direction of the machine body along with the above and supplied to the feeder conveyor 6a of the conveyor device 6.
The conveyor device 6 has a lift cylinder C for the traveling body.
1 is provided with a conveyor frame 6b configured to swing up and down around the axis P1, and the feeder conveyor 6a located inside the conveyor frame 6b conveys the cutting stems from the platform auger 14 to the conveyor frame 6b. It is configured to be conveyed to the rear of the machine body along the bottom plate portion of the frame 6b and to be supplied to the threshing unit 31 of the threshing device 30. As a result, the first pre-mowing treatment device 10 cuts the planted stem culm at the base of the stock by the reaping device 12, and supplies the whole stalk culm to the threshing unit 31.

Conveyor device 6 of the pretreatment frame 11
2 is formed so that it can be detachably connected to the pretreatment device connecting portion 6c located at the front end portion of the conveyor frame 6b so that the first cutting pretreatment device 10 can be removed. (B) As shown in
The second pre-cutting device 2 in place of the pre-cutting device 10
0 can be connected to the conveyor device 6.

The second cutting pretreatment device 20 is a conveyor device 6 of the pretreatment frame 11 of the first cutting pretreatment device 10.
A pretreatment frame 21 having the same connection specifications as the connection portion for the pretreatment device connecting portion 6c of the conveyor frame 6b, and a stem-culm raising device 22 located on the front side of the pretreatment frame 21. The tip side locking transfer device 23, 2 located inside the pretreatment frame 21
4, stock holding side conveying device 25, upper and lower two-stage cutting device 2
6, 27, and the platform auger 28, and the dividers 29 attached to both lateral sides of the front end of the pretreatment frame 21 divide the planted stem culms into stalks to be cut and stalks to be cut. While weeding, the planting stem culm from the divider 29 is caused and caused by the device 22, the stock of the plant is mowed by the lower cutting device 27, and the cutting culm from the cutting device 27 is conveyed by the transport device 2
While being conveyed to the rear side of the machine body by 3, 24, and 25, while being sandwiched by the sandwiching and conveying device 25, the cutting device 26 on the upper stage side cuts and divides it into the tip side part A and the stem side part B, and The culm side portion B is discharged to the field, and the tip side portion A is supplied to the platform auger 28 by the transporting devices 23, 24, 25, and along this platform auger 28 along the platform formed of the bottom plate portion of the pretreatment frame 21. It is configured to be conveyed in the lateral direction of the machine body and supplied to the feeder conveyor 6a of the conveyor device 6. When the second cutting pretreatment device 20 is connected,
By supplying the tip side part A from the platform auger 28 of this to the threshing part 31 by the feeder conveyor 6a, the second pre-cutting device 20 causes the root of the planted stem culm to be cut by the lower cutting device 27. The cutting stem culm is cut and divided into the tip side part A and the culm side part B by the upper side reaping device 26, and the culm side part B is dropped and released into the field, and only the tip side part A is threshed. Supply to 31.

The threshing device 30 is constructed as shown in FIG. That is, the whole of the threshing target supplied from the feeder conveyor 6 a of the conveyor device 6 is supplied by the supply guide 32.
Is introduced into the handling chamber 34 by the guiding action by the blades and the scraping action by the blades 33a of the blade 33.
The threshing blade 33 of the handling barrel 33 that rotates the threshing material that has entered in the rotation direction F around the axial center 33b in the machine longitudinal direction.
While transferring to the rear end side of the handling cylinder by the feeding action of c,
Handled by the action of the handle teeth 33d of the handle barrel 33,
The threshing unit 31 is configured to drop the threshing grains from the concave 35 and discharge the threshing dust from the dust discharge port 36 to the outside of the machine. A throttling and sorting device 37 for sorting threshing-treated products dropped and supplied from the handling chamber 34 through the concave 35 to the rear of the machine body and sorting them into grains and dust, and a Karakusu 38 for supplying sorting wind, and a dust sorting wind With dust outlet 3
A sorting section for discharging the sheet from the machine to the outside of the machine is provided below the threshing section 31, and the first processed product from the sorting section is supplied to the bucket conveyor 3
A No. 1 screw conveyor 39a for conveying to No. 2 and a No. 2 screw conveyor 39b for returning the No. 2 processed product from the sorting unit to the handling chamber 34 are provided at the bottom of the sorting unit.

As shown in FIGS. 3 and 4, a plurality of dust delivery valves 40a are provided near the upper side of the handling cylinder 33 in the handling chamber 34 and arranged in the direction of the axis of rotation of the handling cylinder. These dust delivery valves 40
a is a rotary support shaft 4 which is attached to a body portion 41 forming the handling chamber 34.
The vertical plate portion 40a of the bent plate body 40 attached via 2 acts to guide the threshing material spirally transferred around the handling barrel 33 toward the rear end side of the handling barrel 33 by the turning force of the handling barrel 33. . As a result, when the rotary support shaft 42 is pivotally operated to swing the dust feed valve 40a with respect to the machine body portion 41, as shown in FIG.
As indicated by a phantom line, the dust transfer valve 40a has a mounting posture in which it is opened with respect to the spiral transfer direction R of the threshed material, or as shown by a solid line in FIG. The mounting posture is closer to the direction R. The open side of the dust transfer valve 40a with respect to the spiral transfer direction R is a mounting posture in which the angle D of the dust transfer valve 40a with respect to the spiral transfer direction R is large, and the closed side of the dust transfer valve 40a is the dust transfer valve 40a. Is a mounting posture in which the angle D with respect to the spiral transfer direction R is small. Therefore, when the dust feed valve 40a is adjusted to the open side, the dust feed valve 40a guides the threshing treatment product so that the spiral transfer direction of the threshing treatment product is more toward the rear end side of the handling cylinder than before adjustment. However, the time during which the threshed material stays in the handling chamber 34 is made shorter than before adjustment. That is, the time during which the threshed material is threshed is made shorter than before adjustment. When the dust transfer valve 40a is adjusted to the closed side, the dust transfer valve 40a guides the threshing treatment product so that the spiral transfer direction of the threshing treatment product is toward the front end side of the handling cylinder rather than before adjustment, and the threshing treatment product is The time during which the water stays in the handling room 34 is made longer than before adjustment. That is, the time during which the threshed material is threshed is set longer than before adjustment.

As shown in FIG. 5, one end side of all the dust feed valves 40a is connected by a connecting rod 43, and one of the plurality of dust feed valves 40a is connected to the body portion 41 of the rotary support shaft 42. An operation arm 44 is integrally rotatably attached to a shaft end portion protruding outside the handling room, and is screwed to a feed screw shaft 45 provided on the outer surface side of the machine body portion 41 so as to be rotatably operated by an electric motor M. The female screw member 46 is engaged with the operation arm 44 by a locking pin portion 46a provided in the female screw member 46 so as to be rotatable and pressed relative to each other, and the electric motor M is rotated in the forward rotation direction or the reverse rotation direction. All of the dust feed valves 40a can be adjusted to the closed side or the open side by rotating.

As shown in FIG. 6, a detection mechanism (not shown) provided in the first and second pre-mowing devices 10, 20 for detecting the ground height of the mowing device 12 or 27 is detected. A signal for outputting the result as an electric signal is transmitted to the control mechanism on the traveling machine body side, and the first cutting pretreatment device 1 is arranged so that the ground height of the cutting devices 12 and 27 becomes the set height.
No. 0 or the second cutting pretreatment device 20 is mounted on the machine body side connector 47 for controlling the lifting and lowering, and is attached to the conveyor frame 6b of the conveyor device 6, and for the lifting and lowering control of the plurality of terminals provided on the machine body side connector 47. Other terminal 4
7a and 47b are configured to detect which of the first cutting pretreatment device 10 and the second cutting pretreatment device 20 is connected to the conveyor device 6. That is, the sensor-side connector 48 of the first cutting pretreatment device 10 and the sensor-side connector 49 of the second cutting pretreatment device 20 connect the first cutting pretreatment device 10 or the second cutting pretreatment device 20 to the conveyor device 6. Then, it is arranged so as to be automatically connected to the machine-side connector 47 in accordance with this connecting operation, and is attached to the pretreatment frame 11 of the first cutting pretreatment device 10 or the pretreatment frame 21 of the second cutting pretreatment device 20. It is attached. When the sensor-side connector 48 of the first pre-mowing treatment device 10 is connected to the machine-side connector 47, only one of the terminals 47a and 47b of the machine-side connector 47 is a terminal of the sensor-side connector 48. 48a,
The sensor side connector 49 of the second pre-mowing treatment device 10
Is connected to the machine side connector 47, only the other 47b of the terminals 47a and 47b of the machine side connector 47 is connected to the terminal 49a of the sensor side connector 49. As a result, the terminal 4 of the fuselage side connector 47
By knowing which of 7a and 47b is in the connected state, it is possible to detect which of the first cutting pretreatment device 10 and the second cutting pretreatment device 20 is connected.

As shown in FIG. 6, the drive circuit 51 of the electric motor M is linked to the control mechanism 50 in which the terminals 47a and 47b of the body side connector 47 are linked, and the control mechanism 50 is constituted by a microcomputer. Therefore, the discriminating means 52 and the processed material transfer control means 53 are provided in the control mechanism 50. The discriminating means 52 is
Based on the information from the terminals 47a and 47b, it is determined which one of the first cutting pretreatment device 10 and the second cutting pretreatment device 20 is in the connected state. Processed material transfer control means 5
3 outputs a predetermined signal to the drive circuit 51 based on the detection result of the determination means 52 to operate the electric motor M, so that the dust feed valve 40a is automatically operated based on the information from the terminals 47a and 47b. It is configured to be opened and closed. That is, when the determination means 52 determines that the first pre-mowing treatment device 10 is connected, the processed material transfer control means 53, based on the information from the determination means 52, the drive circuit 51.
By automatically outputting a predetermined signal to drive the electric motor M to the opening side of the dust feeding valve, the dust feeding valve 40a is automatically operated to the opening side, and the discriminating means 52 causes the second cutting pretreatment device. If it is determined that the 20 are connected, the processed material transfer control means 53, based on the information from the determination means 52, the drive circuit 5
By automatically outputting a predetermined signal to 1 to drive the electric motor M to the dust-sending valve closing side, the dust-sending valve 40a is automatically operated to the closing side.

That is, when harvesting stalks with a standard culm length or shorter stalk length, the first cutting pretreatment device 10 is connected to the conveyor device 6 for work. Then, the first pre-cutting device 10 cuts the planted culm at the root by the reaping device 12 and supplies the whole stalks to the threshing unit 31. Therefore, the stem side of the stem culm does not remain in the stock portion after cutting, and cutting can be performed while facilitating the subsequent tilling work. At this time, the processed material transfer control means 53 causes the terminal 4
Based on the information from 7a and 47b, the dust sending valve 40a is automatically operated to the open side, and the dust sending valve 40a adjusts the residence time of the threshing processed material in the handling chamber 34 to the short side. For this reason, since both the tip side part and the culm side part of the mowing stem culm are introduced into the handling chamber 34, the threshing products are appropriately fitted to each other and the handling barrel 33 effectively handles a relatively large amount. Despite the presence of the threshed product, the threshing process can be performed while preventing excessive handling of the threshed product. When harvesting stem culms having a culm length longer than the standard length, the second cutting pretreatment device 20 is connected to the conveyor device 6 for operation. Then
The second pre-mowing treatment device 20 cuts the planted stem culm at the base of the plant by the reaping device 27, divides the stalk culm into the tip side portion A and the culm side portion B by the reaping device 26, and the culm side portion B. Is released to the field and only the tip side portion A is supplied to the threshing portion 21. Therefore, the stem side part B of the stem culm does not remain in the stock part after cutting, and the cutting can be performed while facilitating the subsequent plowing work. At this time, the processed material transfer control means 53 automatically operates the dust transfer valve 40a to the closing side based on the information from the terminals 47a and 47b, and the dust transfer valve 40a determines the residence time of the threshing processed material in the handling chamber 34. Adjust to the long side. For this reason, the tip of the cutting stem culm A in the handling room 34
Introducing only the threshing processed material into the handling chamber 34, the amount of the threshing processed material becomes relatively small and the handling effect due to the interlocking of the threshing processed materials and the handling effect efficiency of the handling cylinder 33 are deteriorated. Since the time becomes long, the threshing process can be performed while preventing the lack of threshing.

[Other Embodiments] In the case of the above-described structure, the terminals 47a and 47b of the connector 47 are used as detecting means to detect the first cutting pretreatment device 10 and the second cutting pretreatment device 2.
It is possible to detect which of 0 is connected. For this reason,
It is advantageous that the dust control valve can be automatically controlled with a simple structure from the aspect of the detection means as compared with the case where the detection means dedicated to the detection is specially provided, but it may be implemented by providing the dedicated detection means. Therefore, the terminals 47a and 47b are referred to as detection mechanisms 47a and 47b. Further, when the first mowing pretreatment device 10 and the second mowing pretreatment device 20 are connected, the connector 48 or 49 on the sensor side is automatically connected to the connector 47 on the fuselage side with this connecting operation. Although advantageous in terms of the aspect, when connecting the first cutting pretreatment device 10 and the second cutting pretreatment device 20, the connector 48 on the sensor side
Alternatively, 49 may be configured to be artificially connected to the machine-side connector 47.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

1] Side view of the whole combine

FIG. 2 is an explanatory view of a connected state of a first pre-mowing treatment device or a second mowing pre-treatment device.

FIG. 3 is a sectional view of a threshing device.

FIG. 4 is a sectional view of the handling room.

FIG. 5 is a plan view of the dust control valve adjusting structure.

FIG. 6 is a block diagram of a dust control valve automatic control system.

[Explanation of symbols]

 6c Pretreatment device connection part 10 1st mowing pretreatment device 20 2nd mowing pretreatment device 31 Threshing part 33 Handling barrel 34 Handling chamber 40a Dust transfer valves 47a, 47b Detection mechanism 53 Treated material transfer control means A Ear tip side part B culm Body side R Processed material transfer direction

Claims (1)

[Claims] 1. A first pre-mowing pretreatment device (10) for cutting a planted stem culm at the plant base and supplying the whole trimmed culm to a threshing part (31), and cutting the plant base of the planted culm. Together with the second cutting pretreatment device (20), the cutting stem culm is divided into the tip side portion (A) and the culm side portion (B), and the tip side portion (B) is supplied to the threshing unit (31). A pretreatment device connecting part (6c) to which is exchangeably connected, and the threshing part (31) introduces the whole threshing target to be supplied into the handling chamber (34) and rotates the handling cylinder ( 33) A combiner configured to carry out handling treatment while being transferred to the rear end side of the handling cylinder by means of 33), which feed guides the threshing material transferred to the rear end side of the handling cylinder by the handling cylinder (33). The dust valve (40a) is adjustable so that the dust valve (40a) can be opened and closed with respect to the workpiece transfer direction (R). In preparation for (34), a detection mechanism (47a, 47b) for detecting which of the first cutting pretreatment device (10) and the second cutting pretreatment device (20) is connected, and the dust transfer. Processed material transfer control means (53) for opening and closing the valve (40a)
When the detection mechanism (47a, 47b) detects the connection of the first pre-mowing treatment device (10), the processed material transfer control means (53) provides information from the detection mechanism (47a, 47b). Based on the above, the dust feed valve (40a) is automatically operated to the open side, and the detection mechanism (47a, 47b) causes the second cutting pretreatment device (2).
0) is detected, the processed product transfer control means (5)
3) sets the processing object transfer control means (53) to the detection mechanism (47a) so that the dust feed valve (40a) is automatically operated to the closing side based on the information from the detection mechanism (47a, 47b). , 47b).