JP7275075B2 - Self-throwing combine harvester - Google Patents

Description

The present invention relates to a self-threshing combine harvester.

BACKGROUND ART Conventionally, as a self-threshing combine harvester, for example, a self-threshing combine harvester described in Patent Document 1 is known. The self-throwing combine harvester described in Patent Literature 1 is provided with a reaping portion (“reaping portion [2]” in the document) that reaps planted grain culms and conveys the harvested grain culms toward the rear of the machine body. The reaping unit is provided with a plurality of stalk base conveying devices arranged in the cutting width direction (“right stalk base conveying device [31] etc.” in the literature) configured to hold and convey the base of harvested grain culms. there is The base conveying device is provided with an endless rotating body and a guide member provided opposite to the endless rotating body for guiding the base of harvested grain culms.

JP 2014-97036 A

In the self-detachable combine disclosed in Patent Literature 1, the outermost pile base conveying device positioned outermost in the cutting width direction among the plurality of pile base conveying devices is configured to have a relatively long conveying distance. For this reason, the harvested culms are likely to clog between the endless rotating body and the guide member in the outermost plant base conveying device. In addition, when the grain harvested culms are clogged between the endless rotating body and the guide member in the outermost plant base conveying device, it is difficult to remove the jammed grain harvested culms.

In view of the above situation, there is a demand for a self-throwing combine that can easily remove harvested grain culms stuck between the endless rotating body and the guide member in the outermost stock transfer device.

A feature of the present invention is that it comprises a reaping section for reaping planted grain culms and conveying the harvested grain culms toward the rear of the machine body, wherein the reaping section is configured to pinch and convey the base of the harvested grain culms, It has a plurality of stock base conveying devices arranged in a width direction, and the stock base conveying device includes an endless rotating body, a guide member provided facing the endless rotating body and guiding the stock base of harvested grain culms, and the outermost stock base conveying device positioned outermost in the cutting width direction among the plurality of stock base conveying devices has a use state in which the endless rotating body and the guide member are close to each other, and the endless rotating body and a separated state in which the guide member is separated, the reaping unit has a stem base frame supporting the endless rotating body of the outermost stem transport device, The base frame is configured to be swingable about a support portion that supports the transfer end portion of the stock base frame as a fulcrum, and has a plurality of rakes for raking the base of harvested grain culms toward the stock base conveying device. A packer is provided, and when the stock base frame swings to the side where the endless rotating body and the guide member in the outermost stock base conveying device are separated, the pair of rakes corresponding to the outermost stock base conveying device The reason is that the loaded packers are separated from each other .

According to this characteristic configuration, the space between the endless rotating body and the guide member is widened by switching the outermost stock base conveying device to the separated state. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed in the outermost root conveying device.

Further, according to this characteristic configuration, in the stock base conveying device on the outermost side, when the endless rotating body swings away from the guide member with the support portion as a fulcrum, the endless rotating body and the guide member swing. The interval becomes wider as the transport start end is approached. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed from the conveying start end side.

Further, in the present invention, the outermost stock base conveying device has a plurality of rotating wheels around which the endless rotating body is wound, and the support portion is positioned on the conveying end side of the plurality of rotating wheels. It is preferable that it is constituted by a shaft parallel to the rotation axis of the rotating wheel.

According to this characteristic configuration, the stock base frame swings around the support portion, which is a shaft different from the rotation shaft of the rotating wheel located on the conveying end side, as a fulcrum. As a result, when the stock base frame swings, a load is less likely to be applied to the rotating shaft of the rotating wheel located on the conveying end side.

Further, in the present invention, it is possible to switch between a locked state in which the position of the stock base frame is fixed in the state in which the outermost stock base conveying device is in the use state, and an unlocked state in which the position of the stock base frame is released. It is preferable that a lock mechanism is provided.

According to this characteristic configuration, when a normal harvesting operation is performed, by switching the lock mechanism to the locked state, the stem base conveying device can be stably held in a usable state. Then, when removing the clogged harvested culms, by switching the lock mechanism to the unlocked state, the stock base conveying device can be easily switched to the separated state.

Another feature of the present invention is that it comprises a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body, wherein the harvesting section is configured to pinch and convey the base of the harvested grain culms. and a plurality of stalk base conveying devices arranged in the cutting width direction, wherein the stalk base conveying device includes an endless rotating body and a guide member provided facing the endless rotatable body for guiding the stump base of the harvested grain culms. and the outermost stock base conveying device positioned on the outermost side in the cutting width direction among the plurality of stock base conveying devices has a use state in which the endless rotating body and the guide member approach each other; The rotating body and the guide member are configured to be switchable to a separated state in which the guide member is separated, and the reaping unit includes a stem base frame that supports the endless rotating body of the outermost stem transporting device, The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum. The reaper has a lock mechanism that can be switched between a locked state for fixing the position of the stock base frame and an unlocked state for releasing the fixed position of the stock base frame. and a plurality of weed dividing frames provided corresponding to each of the plurality of weed dividing tools and supporting the weed dividing tools, wherein the lock mechanism is configured to move the stem base frame in the locked state. is connected to the outermost divided grass frame on the side where the outermost root conveying device is located among the plurality of divided grass frames in the cutting width direction.

According to this characteristic configuration, the space between the endless rotating body and the guide member is widened by switching the outermost stock base conveying device to the separated state. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed in the outermost root conveying device.
Further, according to this characteristic configuration, in the stock base conveying device on the outermost side, when the endless rotating body swings away from the guide member with the support portion as a fulcrum, the endless rotating body and the guide member swing. The interval becomes wider as the transport start end is approached. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed from the conveying start end side.
In addition, according to this characteristic configuration, when a normal harvesting operation is performed, by switching the lock mechanism to the locked state, the stem base conveying device can be stably held in a usable state. Then, when removing the clogged harvested culms, by switching the lock mechanism to the unlocked state, the stock base conveying device can be easily switched to the separated state.
Further, according to this characteristic configuration, by using the dividing frame as a member for fixing the position of the stock base frame, it is not necessary to provide a special member for fixing the position of the stock base frame.

Another feature of the present invention is that it comprises a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body, wherein the harvesting section is configured to pinch and convey the base of the harvested grain culms. and a plurality of stalk base conveying devices arranged in the cutting width direction, wherein the stalk base conveying device includes an endless rotating body and a guide member provided facing the endless rotatable body for guiding the stump base of the harvested grain culms. and the outermost stock base conveying device positioned on the outermost side in the cutting width direction among the plurality of stock base conveying devices has a use state in which the endless rotating body and the guide member approach each other; The rotating body and the guide member are configured to be switchable to a separated state in which the guide member is separated, and the reaping unit includes a stem base frame that supports the endless rotating body of the outermost stem transporting device, The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum. It is provided with a lock mechanism capable of switching between a locked state for fixing the position of the stock base frame and an unlocked state for releasing the fixed position of the stock base frame, and a plurality of the lock mechanisms are provided .

According to this characteristic configuration, the space between the endless rotating body and the guide member is widened by switching the outermost stock base conveying device to the separated state. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed in the outermost root conveying device.
Further, according to this characteristic configuration, in the stock base conveying device on the outermost side, when the endless rotating body swings away from the guide member with the support portion as a fulcrum, the endless rotating body and the guide member swing. The interval becomes wider as the transport start end is approached. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed from the conveying start end side.
In addition, according to this characteristic configuration, when a normal harvesting operation is performed, by switching the lock mechanism to the locked state, the stem base conveying device can be stably held in a usable state. Then, when removing the clogged harvested culms, by switching the lock mechanism to the unlocked state, the stock base conveying device can be easily switched to the separated state.
Further, according to this characteristic configuration, the position of the stock base frame is fixed by a plurality of lock mechanisms in a state where the outermost stock base conveying device is in use. As a result, the outermost stock transfer device can be more stably held in use.

Another feature of the present invention is that it comprises a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body, wherein the harvesting section is configured to pinch and convey the base of the harvested grain culms. and a plurality of stalk base conveying devices arranged in the cutting width direction, wherein the stalk base conveying device includes an endless rotating body and a guide member provided facing the endless rotatable body for guiding the stump base of the harvested grain culms. and the outermost stock base conveying device positioned on the outermost side in the cutting width direction among the plurality of stock base conveying devices has a use state in which the endless rotating body and the guide member approach each other; The rotating body and the guide member are configured to be switchable to a separated state in which the guide member is separated, and the reaping unit includes a stem base frame that supports the endless rotating body of the outermost stem transporting device, The stem base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stem base frame as a fulcrum. and a side cover frame supporting a lower portion of the side cover. The side cover frame is provided with a holding portion for holding the stock base frame in the separated state. It is in the

According to this characteristic configuration, the space between the endless rotating body and the guide member is widened by switching the outermost stock base conveying device to the separated state. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed in the outermost root conveying device.
Further, according to this characteristic configuration, in the stock base conveying device on the outermost side, when the endless rotating body swings away from the guide member with the support portion as a fulcrum, the endless rotating body and the guide member swing. The interval becomes wider as the transport start end is approached. As a result, harvested grain culms stuck between the endless rotating body and the guide member can be easily removed from the conveying start end side.
Further, according to this characteristic configuration, the outermost stock base conveying device can be stably held in a separated state.

It is a left view which shows a combine. It is a top view which shows a reaping part. It is a top view which shows a right stock origin conveying apparatus and its peripheral structure. It is a right view which shows the lower part of a reaping part. FIG. 11 is a plan view showing a conveying end portion of the right stock base frame; FIG. 11 is a cross-sectional view showing a conveying end portion of the right stock base frame; It is a right side view showing the first locking mechanism in a locked state. FIG. 11 is a right side view showing the first locking mechanism in an unlocked state; It is a right side view showing the second locking mechanism in a locked state. FIG. 10 is a right side view showing the second lock mechanism in an unlocked state; It is a top view which shows the right stock base conveying apparatus of a separated state.

A mode for carrying out the present invention will be described based on the drawings. In the following description, the direction of arrow F (see FIGS. 1 and 2) is the "front of the fuselage", the direction of arrow B (see FIGS. 1 and 2) is the "rear of the fuselage", and the direction of arrow L (see FIG. 2) is ) is the "left side of the aircraft", and the direction of the arrow R (see FIG. 2) is the "right side of the aircraft".

[Overall configuration of combine harvester]
FIG. 1 shows a self-threshing combine. The combine is provided with a traveling machine body 1. - 特許庁A traveling machine body 1 is provided with a crawler type traveling device 2 and a body frame 3 supported by the traveling device 2 . A reaping unit 4 is provided in front of the traveling machine body 1 for reaping planted grain culms and conveying the harvested grain culms toward the rear of the machine body. A driving unit 5 is provided on the right side of the front part of the traveling machine body 1 . An engine E is provided below the operating section 5 .

A threshing device 6 for threshing the harvested grain culms is provided behind the harvesting unit 4 . That is, the harvesting part 4 is provided in front of the threshing device 6 . A feed chain 7 is provided on the left side of the threshing device 6 for holding and conveying the base of the harvested grain culms. A grain storage tank 8 for storing grains after threshing is provided on the right side of the threshing device 6 . The grain storage tank 8 is connected with a grain discharge device 9 for discharging the grains in the grain storage tank 8 .

[Reaping part]
As shown in FIGS. 1 and 2 , the harvesting unit 4 harvests a plurality of rows (six rows in this embodiment) of planted grain culms, merges the harvested grain culms, and conveys them toward the threshing device 6 . It is configured. The reaping part 4 has a reaping work position (lowered position) in which the reaping work of the planted grain culms is performed and a non-reaping position in which the reaping work of the planted grain culms is not performed. It is configured to be swingable between a working position (raised position). The reaping unit 4 includes a plurality of (seven in this embodiment) dividing tools 10 for dividing the planted grain culms, and a plurality of (six in this embodiment) raising devices for raising the planted grain culms. 11, a plurality of (six in this embodiment) raking belts 12 for raking the base of the planted grain culm, a cutting blade device 13 for cutting the planted grain culm, and the base of the harvested grain culm. A plurality (six in this embodiment) of raking packers 14 for raking, a conveying device 15 for conveying harvested grain culms toward the rear of the machine body, and a harvesting frame 16 for supporting these are provided.

According to such a configuration, the planted grain culms in the field are divided by the dividing tool 10 , and the planted grain culms divided by the dividing tool 10 are raised by the lifting device 11 . The planted culm raised by the raising device 11 is raked by the raking belt 12 , and the planted culm raked by the raking belt 12 is cut by the cutting blade device 13 . The harvested grain culms cut by the cutting blade device 13 are raked up by the raking packer 14, and the harvested grain culms raked up by the raking packer 14 are conveyed toward the rear of the machine body by the conveying device 15. Become.

[Conveyor]
As shown in FIG. 2, the transport device 15 includes a left transport device 17, a middle transport device 18, a right transport device 19, a depth transport device 20, and a supply transport device 21. .

The left conveying device 17 is configured to convey two rows of harvested culms on the left side. The left conveying device 17 is provided with a left stem conveying device 22 (corresponding to the “harvest conveying device” according to the present invention) and a left tip conveying device 23 .

The left stem base conveying device 22 is configured to pinch and convey the stem bases of the left two rows of harvested grain culms. The left stalk conveying device 22 includes a left stalk chain 22A (corresponding to an "endless rotating body" according to the present invention) with projections, and a left stalk chain 22A provided facing the left stalk chain 22A. and a drive sprocket 22C around which the left stock chain 22A is wound. The stems of harvested grain culms are pinched and conveyed by the left stem root chain 22A and the left stem root guide 22B.

The left tip conveying device 23 is configured to hold and convey the tips of the left two rows of harvested grain culms. The left tip conveying device 23 is arranged above the left root conveying device 22 . The left tip conveying device 23 includes a left tip chain 23A, a plurality of pawls 23B attached to the left tip chain 23A and engaging the tips of harvested grain culms, a drive sprocket 23C around which the left tip chain 23A is wound, and the like. is provided.

The left ear tip conveying device 23 assumes a standing posture in which the claw 23B stands up against the left ear tip chain 23A in the portion of the left ear tip chain 23A on the transport route R1 side for transporting the harvested grain culm, and the left ear tip chain 23A is reaped. In the portion on the return route R2 side where the culm is not conveyed, the claw 23B is configured to be in a laid down posture with respect to the left tip chain 23A.

The intermediate conveying device 18 is configured to convey two streaks of harvested culms on the central side. The middle conveying device 18 is provided with a middle stem base conveying device 24 (corresponding to the “stock base conveying device” according to the present invention) and a middle tip conveying device 25 .

The medium stock base conveying device 24 is configured to clamp and convey the stock base of two streaks of harvested grain culms on the central side. In the medium stock transfer device 24, a medium stock chain 24A (corresponding to the "endless rotating body" according to the present invention) with projections is provided facing the medium stock chain 24A, and the stock base of the harvested grain culm is provided. and a drive sprocket 24C around which the middle stock chain 24A is wound. The base of the reaping grain culm is pinched and conveyed by the medium stock base chain 24A and the medium stock base guide 24B.

The middle tip conveying device 25 is configured to hold and convey the tips of the harvested grain culms of the two rows on the central side. The middle tip conveying device 25 is arranged above the middle stock base conveying device 24 . The middle-breast conveying device 25 includes a middle-breast chain 25A, a plurality of pawls 25B attached to the middle-breast chain 25A and acting to engage the tips of harvested grain culms, and a driving sprocket 25C around which the middle-breast chain 25A is wound. is provided.

The middle tip conveying device 25 takes a standing posture in which the claw 25B stands up against the middle tip chain 25A in the part of the middle tip chain 25A on the side of the conveying route R1 that conveys the harvested grain culm, and the middle tip chain 25A is reaping. In the portion on the return route R2 side where the grain culm is not conveyed, the claw 25B is configured to be in a laid down posture with respect to the middle tip chain 25A.

The right conveying device 19 is configured to convey two rows of harvested grain culms on the right side. The right conveying device 19 is provided with a right stem conveying device 26 (corresponding to the "plant conveying device" or "outermost stem conveying device" according to the present invention) and a right tip conveying device 27. there is

The right stem base conveying device 26 is configured to pinch and convey the stem bases of the right two rows of harvested grain culms. The right stalk conveying device 26 has a right stalk chain 26A (corresponding to the "endless rotating body" according to the present invention) with a projection, and is provided facing the right stalk chain 26A. , a driving sprocket 26C, a driven sprocket 26D and rollers 26E and 26F (respectively, the " (corresponding to "rotating wheel"), etc. are provided. The stem of the harvested grain culm is pinched and conveyed by the right stem root chain 26A and the right stem root guide 26B.

The right tip conveying device 27 is configured to hold and convey the tips of the right two rows of harvested grain culms. The right tip conveying device 27 is arranged above the right root conveying device 26 . The right ear tip conveying device 27 includes a right ear tip chain 27A, a plurality of pawls 27B attached to the right ear tip chain 27A and acting to engage with the tip of the reaping grain culm, a drive sprocket 27C around which the right ear tip chain 27A is wound, and the like. is provided.

The right ear tip conveying device 27 assumes a standing posture in which the claw 27B stands up against the right ear tip chain 27A in the portion of the right ear tip chain 27A on the transport route R1 side for transporting the harvested grain culm, and the right ear tip chain 27A is reaped. In the portion on the return route R2 side where the culm is not conveyed, the claw 27B is configured to be in a laid down posture with respect to the right tip chain 27A.

The threshing depth conveying device 20 is configured to receive the stems of harvested grain culms from the left stem root transporting device 22, the middle stem root transporting device 24, and the right stem root transporting device 26, and hold and transport them. The threshing depth conveying device 20 is configured to be vertically swingable at the front fulcrum. The threshing depth is adjusted by vertically swinging the threshing depth conveying device 20 at the front fulcrum.

The threshing depth conveying device 20 is provided with a threshing depth chain 20A having projections and a threshing depth guide 20B provided facing the threshing depth chain 20A and guiding the base of the harvested grain culms. ing. The base of the harvested grain culm is pinched and conveyed by the threshing depth chain 20A and the threshing depth guide 20B.

The feeding and conveying device 21 is configured to receive the base of the reaping grain culms from the threshing depth conveying device 20 and hold and convey them. The supply transport device 21 is arranged on the upstream side in the transport direction with respect to the feed chain 7 . The supply conveying device 21 is arranged below the rear portion of the right tip conveying device 27 . That is, the right tip conveying device 27 is arranged above the supply conveying device 21 .

The supply transport device 21 includes a supply chain 21A with projections, a supply guide 21B provided facing the supply chain 21A to guide the base of the harvested grain stalk, a drive sprocket 21C around which the supply chain 21A is wound, and the like. is provided. The roots of harvested grain culms are pinched and conveyed by the supply chain 21A and the supply guide 21B.

According to such a configuration, the tips of the left two grain harvested culms held and conveyed by the left ear tip conveying device 23, the central two rows of harvested grain culms held and conveyed by the middle ear tip conveying device 25, and The tips of the two grain harvested culms on the right side that have been retained and transported by the right ear tip conveying device 27 join, and the tips of the merged grain harvested culms (the tips of the six grain harvested culms) are retained and transported by the right ear tip conveying device 27. and supplied to a threshing chamber (not shown) of the threshing device 6.

In addition, the base of the left two grain harvested culms pinched and conveyed by the left stock base conveying device 22, the stock base of the two central harvested grain culms pinched and conveyed by the middle stock conveying device 24, and the right stock base conveyance. The stems of the right two grain harvested culms pinched and conveyed by the device 26 join, and the combined harvested grain culms (six roots of the harvested grain culms) are conveyed by the threshing depth conveying device 20 and the supply conveying device. 21, and finally supplied to the feed chain 7 by the supply/conveyance device 21. As shown in FIG.

[Reaping frame]
As shown in FIGS. 3 and 4 , the reaping frame 16 includes a weed dividing frame 28 , a reaping shaft case 29 , a reaping drive case 30 , and a right stem base drive case 31 .

A plurality (seven in this embodiment) of the weed dividing frames 28 are provided corresponding to each of the plurality (seven in this embodiment) of the weed dividing tools 10 so as to support the weed dividing tools 10. there is The reaping shaft case 29 is configured to be swingable around a swing axis X1 (see FIG. 1). The reaping drive case 30 is connected to the front end portion of the reaping shaft case 29 so as to extend along the left-right direction of the machine body. The right stem base drive case 31 is provided upright in the front-rear intermediate portion of the reaping shaft case 29 . Inside the reaping shaft case 29, the reaping drive case 30, and the right stem base drive case 31, shafts (not shown) for transmitting power to the respective parts of the reaping unit 4 are provided.

The rear end portion of the rightmost outboard split weed frame 28 in the cutting width direction of the seven split weed frames 28 (the rightmost outboard split weed frame 28 ) and the right end portion of the reaping drive case 30 are covered with these A connection frame 32 is provided to connect the . A right frame 33 is supported by the connecting frame 32 .

[Right stock original frame]
As shown in FIGS. 3 and 4, a right stock base frame 34 (corresponding to a "stock base frame" according to the present invention) is provided to support the right stock base chain 26A. The right stem base frame 34 is supported by the rightmost outer splitting frame 28 , the right stem base drive case 31 and the right frame 33 .

The right stock base frame 34 includes a pipe frame portion 35 extending along the conveying direction of the right stock base conveying device 26 and a base portion 36 provided at the conveying end portion of the pipe frame portion 35 .

The pipe frame portion 35 is provided across the rightmost outer divided grass frame 28 and the base portion 36 . A front attachment portion 37 attached to the rightmost outer dividing grass frame 28 is provided at the front end portion of the pipe frame portion 35 . An attachment portion 38 to which a front attachment portion 37 is attached is provided on the rightmost outer divided grass frame 28 . The front mounting portion 37 is fixed to the mounting portion 38 by bolts 39 .

At the front portion of the pipe frame portion 35, of the six rake belts 12, the rake belt 12 positioned on the outermost right side in the cutting width direction (the outermost rake belt 12) and the six rake packers 14 are arranged. Of these, the raking packer 14 located on the outermost right side in the cutting width direction (the raking packer 14 on the outermost right side) is supported. That is, in addition to the right stock chain 26A, the right stock base frame 34 also supports the rightmost outer raking belt 12 and the rightmost outer raking packer 14 .

As shown in FIGS. 5 and 6, the base portion 36 is supported by the support portion 40 so as to be swingable about the swing axis Z1. In other words, the right stock base frame 34 is configured to be able to swing around the supporting portion 40 that supports the conveying end portion of the right stock base frame 34 as a fulcrum.

The base portion 36 is formed with an elongated hole 36a into which the upper end portion of the rotating shaft S1 of the roller 26E is inserted. The long hole 36a is formed in a shape along an arc centered on the swing axis Z1. That is, the right stock base frame 34 is configured to be swingable about the swing axis Z1 while the rotation shaft S1 of the roller 26E moves along the elongated hole 36a.

The support portion 40 is provided with an attachment shaft 40A to which the base portion 36 is attached, and bolts 40B for fixing the base portion 36 to the attachment shaft 40A. The mounting shaft 40A and the rotating shaft S1 of the roller 26E are erected on the base plate 41. As shown in FIG. The base plate 41 is bolted to the upper end of the right stock drive case 31 .

Here, the drive sprocket 26C and the rollers 26E are rotating wheels located on the transport end side among the drive sprocket 26C, the driven sprocket 26D and the rollers 26E and 26F. The support portion 40 is configured by a shaft parallel to the rotation axis S2 of the drive sprocket 26C and the rotation axis S1 of the roller 26E. That is, the support portion 40 is configured by a shaft different from the rotation shaft S2 of the drive sprocket 26C and the rotation shaft S1 of the roller 26E.

[First locking mechanism]
As shown in FIGS. 3 and 4, a locked state (see FIG. 7) in which the right stock base frame 34 is fixed in a state where the right stock base conveying device 26 is ready for use, and the positional fixation of the right stock base frame 34 is released. A first lock mechanism 42 (corresponding to the "lock mechanism" according to the present invention) that can be switched between the unlocked state (see FIG. 8) is provided. The first locking mechanism 42 is configured across the right stem base frame 34 and the rightmost outer dividing grass frame 28 . Specifically, the first lock mechanism 42 is configured across the front mounting portion 37 and the mounting portion 38 . The first lock mechanism 42 has a pin 43 and a hook 44 that can be hooked on the pin 43 .

The pin 43 is provided on the front attachment portion 37 so as to protrude rightward from the right side surface of the front attachment portion 37 . The pin 43 is configured by a pin with a head. The mounting portion 38 is formed with an engagement groove 38a opening rearward so that the pin 43 can be engaged therewith.

The hook 44 is positioned on the right side of the mounting portion 38 and is supported by the mounting portion 38 so as to be able to swing about a swing axis X2 extending along the left-right direction of the vehicle body. The hook 44 is provided with a handle 45 for swinging the hook 44 . The hook 44 is fixed to the front mounting portion 37 by a bolt 60 while being hooked on the pin 43 .

According to such a configuration, as shown in FIG. 7, when the hook 44 is swung by the handle 45 while the pin 43 is engaged with the engagement groove 38a, the hook 44 is hooked on the pin 43. , the first locking mechanism 42 is locked. In this way, the right stock base frame 34 is positionally fixed by the first lock mechanism 42 in a state where the right stock base conveying device 26 is ready for use. In other words, the first locking mechanism 42 is configured to connect the right stem base frame 34 to the rightmost outer dividing grass frame 28 in the locked state.

Then, as shown in FIG. 8, when the hook 44 is swung by the handle 45 with the bolt 60 removed to release the hook 44 from the pin 43, the first locking mechanism 42 is unlocked. . Thus, the positional fixation of the right stock base frame 34 by the first lock mechanism 42 is released.

[Second lock mechanism]
As shown in FIGS. 3 and 4, a locked state (see FIG. 9) in which the right stock base frame 34 is fixed in a state where the right stock base conveying device 26 is ready for use, and the positional fixation of the right stock base frame 34 is released. A second lock mechanism 46 (corresponding to the "lock mechanism" according to the present invention) is provided which can be switched between the unlocked state (see FIG. 10) and the unlocked state (see FIG. 10). That is, in this embodiment, two "lock mechanisms" according to the present invention are provided.

The second lock mechanism 46 is configured across the right stock base frame 34 and the right frame 33 . Specifically, the second lock mechanism 46 is configured across the first stay 47 and the second stay 48 . The first stay 47 is provided on the pipe frame portion 35 . The second stay 48 is provided on the right frame 33 . The first stay 47 and the second stay 48 are fixed by bolts 49 . The second lock mechanism 46 is provided with a pin 50 and left and right hooks 51 that can be hooked on the pin 50 .

The pin 50 is provided on the second stay 48 so as to protrude leftward from the left edge of the second stay 48 and to protrude rightward from the right edge of the second stay 48 .

The left and right hooks 51 are supported by the first stay 47 so as to be integrally rockable about the rocking axis X3. A handle 52 is provided for swinging the left and right hooks 51 . The first stay 47 is provided with a holding portion 53 that holds the handle 52 while the left and right hooks 51 are hooked on the pin 50 . The handle 52 is fixed to the holding portion 53 by bolts 54 with the left and right hooks 51 hooked on the pins 50 .

According to such a configuration, as shown in FIG. 9, the left and right hooks 51 are swung by the handle 52 to hook the left hook 51 to the left end of the pin 50 and the right hook 51 to the pin. When hooked on the right end of 50, the second locking mechanism 46 is locked. In this way, the right stock base frame 34 is positionally fixed by the second lock mechanism 46 in a state where the right stock base conveying device 26 is ready for use.

Then, as shown in FIG. 10, when the left and right hooks 51 are swung by the handle 52 with the bolt 54 removed and the left and right hooks 51 are released from the pin 50, the second lock mechanism 46 is locked. Released. Thus, the positional fixation of the right stock base frame 34 by the second lock mechanism 46 is released.

[Switching the right stock base conveying device to the separated state]
As shown in FIG. 11, the positional fixation of the right stock base frame 34 by the first locking mechanism 42 and the second locking mechanism 46 is released, the fixation of the front mounting portion 37 by the bolt 39 is released, and the bolt 49 The fixation of the first stay 47 by is released.

Then, when the right stock base frame 34 is swung around the swing axis Z1 in the direction of the arrow, the right stock base chain 26A is separated from the right stock base guide 26B as the right stock base frame 34 swings. become. In this way, among the left pile base conveying device 22, the middle pile base conveying device 24, and the right pile base conveying device 26 arranged in the cutting width direction, the right pile base conveying device 26 located on the outermost right side is the right pile base chain 26A. and the right stock base guide 26B approach (see FIG. 3), and the separated state (see FIG. 11) in which the right stock base chain 26A and the right stock base guide 26B are separated.

As described above, in addition to the right stock chain 26A, the right stock base frame 34 also supports the right outermost rake belt 12 and the right outermost rake packer 14. As the base frame 34 swings, the rightmost outer raking belt 12 and the rightmost outer raking packer 14 also move integrally with the right stock base frame 34 .

Here, a tension roller 55 that applies tension to the right stock chain 26A is in contact with a portion of the right stock chain 26A near the roller 26F. The tension roller 55 is configured to be switchable between a tension application state in which tension is applied to the right stock base chain 26A and a tension release state in which tension application to the right stock base chain 26A is released.

When the tension roller 55 is switched to the tension released state, the tension of the right stock base chain 26A is loosened. As a result, when switching the right stock base conveying device 26 from the use state to the separated state, the right stock base chain 26A is less likely to be restricted, and the right stock base chain 26A can be largely separated from the right stock base guide 26B. can.

[Holding part]
As shown in FIG. 4, side covers 4A are provided on both left and right sides of the reaping unit 4, respectively. A side cover frame 56 that supports the lower portion of the side cover 4A on the side (right side) of the reaping unit 4 where the right stem base conveying device 26 is located in the cutting width direction is supported by the rightmost outer weed frame 28. there is The side cover frame 56 is provided with a holding portion 57 that holds the right stock base frame 34 in a separated state. The right stock base frame 34 is provided with a mounting portion 58 that is attached to the holding portion 57 when the right stock base conveying device 26 is switched to the separated state.

According to such a configuration, as shown in FIG. 8, the right stock base frame 34 can be held in the separated state by the holding portion 57 while the right stock base conveying device 26 is switched to the separated state. At that time, the mounting portion 58 is fixed to the holding portion 57 by the pin 59 .

[Another embodiment]
(1) In the above-described embodiment, the “outermost stock base conveying device” according to the present invention is the right stock base conveying device 26 . However, the “outermost stock base conveying device” according to the present invention may be the left stock base conveying device 22 .

(2) In the above-described embodiment, the support portion 40 is configured by a shaft parallel to the rotation axis S2 of the drive sprocket 26C and the rotation axis S1 of the roller 26E. However, the support portion 40 may be configured by the rotation shaft S2 of the drive sprocket 26C. Alternatively, the support portion 40 may be configured by the rotation shaft S1 of the roller 26E.

(3) In the above embodiment, the first lock mechanism 42 and the second lock mechanism 46 are provided as the "lock mechanism" according to the invention. That is, two "locking mechanisms" according to the present invention are provided. However, the number of "locking mechanisms" according to the present invention may be one. Alternatively, the number of "locking mechanisms" according to the present invention may be three or more.

(4) In the above embodiment, the holding portion 57 is provided on the side cover frame 56 . However, the holding portion 57 may be provided on a member different from the side cover frame 56 .

(5) In the above embodiment, the reaping unit 4 is configured for six-row reaping. However, the reaping unit 4 is not limited to six-row reaping.

INDUSTRIAL APPLICABILITY The present invention can be used for self-threshing combine harvesters.

4 reaping part 4A side cover 10 minutes grass tool
14 raking packer
22 Left stock conveying device (stock conveying device)
22A left stock chain (endless rotating body)
22B left stock base guide (guide member)
24 Medium Stock Transfer Device (Stock Transfer Device)
24A Medium Stock Chain (Endless Rotating Body)
24B medium stock base guide (guide member)
26 right stock base conveying device (stock base conveying device, outermost stock base conveying device)
26A right stock chain (endless rotating body)
26B Right stock base guide (guide member)
26C drive sprocket (rotating wheel)
26D driven sprocket (rotating wheel)
26E roller (rotating wheel)
26F roller (rotating wheel)
28 Fraction frame 34 Right share original frame (share original frame)
40 support portion 42 first lock mechanism (lock mechanism)
46 second lock mechanism (lock mechanism)
56 Side cover frame 57 Holding part S1 Rotation shaft S2 Rotation shaft

Claims (6)

Equipped with a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body,
The reaping unit is configured to hold and convey the base of the harvested grain culm, and has a plurality of base conveying devices arranged in the cutting width direction,
The base conveying device has an endless rotating body, and a guide member provided opposite to the endless rotating body for guiding the base of the harvested grain culm,
Among the plurality of stock base conveying devices, the outermost stock base conveying device located on the outermost side in the cutting width direction has a use state in which the endless rotating body and the guide member approach each other, and a state in which the endless rotating body and the guide member and is configured to be switchable between the separated state and the separated state,
The reaping unit has a stock base frame that supports the endless rotating body of the outermost stock base conveying device,
The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum,
Equipped with a plurality of raking packers for raking the base of harvested grain culms toward the base conveying device,
When the stock base frame swings to the side where the endless rotating body and the guide member in the outermost stock base conveying device are separated, the pair of raking packers corresponding to the outermost stock base conveying device are moved to each other. Self-throwing combine harvester in a separated state . Equipped with a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body,
The reaping unit is configured to hold and convey the base of the harvested grain culm, and has a plurality of base conveying devices arranged in the cutting width direction,
The base conveying device has an endless rotating body, and a guide member provided opposite to the endless rotating body for guiding the base of the harvested grain culm,
Among the plurality of stock base conveying devices, the outermost stock base conveying device located on the outermost side in the cutting width direction has a use state in which the endless rotating body and the guide member approach each other, and a state in which the endless rotating body and the guide member and is configured to be switchable between the separated state and the separated state,
The reaping unit has a stock base frame that supports the endless rotating body of the outermost stock base conveying device,
The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum,
The reaping unit has a side cover provided on a side portion on the side where the outermost stock base conveying device is located in the cutting width direction, and a side cover frame supporting a lower portion of the side cover,
A self- detachable combine harvester, wherein the side cover frame is provided with a holding portion for holding the stock base frame in the separated state. A locking mechanism capable of switching between a locked state in which the position of the stock base frame is fixed in a state where the outermost stock base conveying device is in the state of use and an unlocked state in which the position of the stock base frame is released. The self-threshing combine according to claim 1 or 2 . Equipped with a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body,
The reaping unit is configured to hold and convey the base of the harvested grain culm, and has a plurality of base conveying devices arranged in the cutting width direction,
The base conveying device has an endless rotating body, and a guide member provided opposite to the endless rotating body for guiding the base of the harvested grain culm,
Among the plurality of stock base conveying devices, the outermost stock base conveying device located on the outermost side in the cutting width direction has a use state in which the endless rotating body and the guide member approach each other, and a state in which the endless rotating body and the guide member and is configured to be switchable between the separated state and the separated state,
The reaping unit has a stock base frame that supports the endless rotating body of the outermost stock base conveying device,
The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum,
A locking mechanism capable of switching between a locked state in which the position of the stock base frame is fixed in a state where the outermost stock base conveying device is in the state of use and an unlocked state in which the position of the stock base frame is released. cage,
The reaper includes a plurality of weed dividing tools for dividing planted grain culms, and a plurality of weed dividing frames provided corresponding to each of the plurality of weed dividing tools and supporting the said weed dividing tools. have
In the locked state, the lock mechanism attaches the stem base frame to the outermost one of the plurality of grass division frames on the side where the outermost stem base conveying device is positioned in the cutting width direction. A self -threshing combine configured for coupling. Equipped with a harvesting section for harvesting planted grain culms and conveying the harvested grain culms toward the rear of the machine body,
The reaping unit is configured to hold and convey the base of the harvested grain culm, and has a plurality of base conveying devices arranged in the cutting width direction,
The base conveying device has an endless rotating body, and a guide member provided opposite to the endless rotating body for guiding the base of the harvested grain culm,
Among the plurality of stock base conveying devices, the outermost stock base conveying device located on the outermost side in the cutting width direction has a use state in which the endless rotating body and the guide member approach each other, and a state in which the endless rotating body and the guide member and is configured to be switchable between the separated state and the separated state,
The reaping unit has a stock base frame that supports the endless rotating body of the outermost stock base conveying device,
The stock base frame is configured to be swingable about a supporting portion that supports the conveying end portion of the stock base frame as a fulcrum,
A locking mechanism capable of switching between a locked state in which the position of the stock base frame is fixed in a state where the outermost stock base conveying device is in the state of use and an unlocked state in which the position of the stock base frame is released. cage,
A self -throwing combine harvester comprising a plurality of the lock mechanisms. The outermost stock base conveying device has a plurality of rotating wheels around which the endless rotating body is wound,
6. The self-detachable type according to any one of claims 1 to 5, wherein the support portion is configured by a shaft parallel to the rotation axis of one of the plurality of rotating wheels positioned on the conveying terminal side. combine.

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