JP7183122B2 - combine - Google Patents

Description

The present invention relates to combine harvesters.

The reaping part (B) of the combine disclosed in Patent Document 1 is provided with a feeding and conveying device (23) that supplies reaping grain culms from the reaping device (7) to the threshing feed chain (FC). The outer merging conveying device (27) of the feeding conveying device (23) pinches the harvested grain culms from the two scraping rotors (25) on the left end side of the traveling machine body at the root side of the endless rotating chain (27a). The culms are conveyed to the middle of the conveying route of the main conveying device (23A) by the conveying and the locked conveying of the tip side by the endless rotating chain (27b), and joined with the harvested culms conveyed by the main conveying device (23A). .

At the time of confluence, the stem side portion of the harvested grain culm is transferred from the endless rotating chain (27a) to the stem clamping and conveying device (29). The tip side portion of the harvested grain culm is transferred from the endless rotating chain (27b) to the tip side locking and conveying device (30).

JP 2014-217330 A

When the root side portion of the harvested culm is transferred from the upstream endless rotating chain to the downstream endless rotating chain, if the conveying directions of these endless rotating chains intersect, the harvested culm is not immediately clamped by the endless rotating chain on the downstream side and stays at the transfer section for a while. Here, if the tip side portion of the harvested grain culm is immediately transferred to the conveying device on the downstream side, the tip side portion will be conveyed downstream while the root side portion remains in the transfer section. Then, as the tip side portion of the grain harvested culm advances downstream, the inclination of the grain harvested culm increases, and the grain harvested culm falls down. If the harvested culms fall excessively, there is a risk that the harvested culms may fall off from the harvesting portion, or that the attitude of the harvested culms being supplied to the threshing device may deteriorate.

SUMMARY OF THE INVENTION An object of the present invention is to provide means for suppressing the occurrence of falling of harvested grain culms in a harvesting section.

The combine of the present invention includes a harvesting unit that harvests planted grain culms and conveys them toward the threshing device at the rear, the harvesting unit includes a first conveying device that conveys the harvested grain culms toward the threshing device, a second conveying device arranged in a state in which the conveying direction thereof intersects with the first conveying device and receives harvested grain culms from the first conveying device and conveys them toward the threshing device, wherein the first conveying device is a first stock side conveying unit that conveys the base side portion of the harvested grain culm, and a tip side portion that is a portion on the tip side of the portion of the harvested grain culm that is conveyed by the first stock base side conveying unit. The second conveying device includes a second stock side conveying unit for conveying the base side portion of the harvested grain culm, and the second stock base side conveying unit for conveying the harvested grain culm. a second tip-side conveying unit that conveys a tip-side portion that is a portion closer to the tip than the portion that is conveyed by the side conveying unit; a stock base side chain; and a first stock base side guide member arranged along the conveying direction of the first stock base side chain and guiding harvested grain culms conveyed to the first stock base side chain, The second stock base side conveying unit is arranged along the conveying direction of the second stock base side chain that conveys the harvested culms and the second stock base side chain, and is conveyed to the second stock base side chain. a second root-side guide member for guiding the harvested grain culms, the first tip-side conveying unit and the second tip in the transfer portion of the harvested grain culms from the first conveying device to the second conveying device. A fall suppression member is provided below the side conveying unit and acts on the base side of the harvested grain culm to suppress the collapse of the harvested grain culm , and the fall suppressing member is attached to the first stock base side conveying unit. It is elastically deformable in a direction of approaching and separating, and when viewed from a direction orthogonal to the first conveying device, the base end portion of the collapse suppressing member is located on the first stock base side with respect to the first stock base side guide member. Positioned on the opposite side of the chain, the collapse suppressing member intersects the first stock side guide member and extends to the same side as the first stock side chain with respect to the first stock side guide member. characterized by

According to the above-described characteristic configuration, the collapse suppressing the collapse of the harvested culms by acting on the base side of the harvested culms below the first tip-side conveying unit and the second tip-side conveying unit in the delivery unit Since the suppressing member is provided, it is possible to effectively suppress the falling of harvested grain culms at the transfer section.
Further, according to the above-described characteristic configuration, the transportation of harvested grain culms by the first stock base side conveying section is less likely to be disturbed, and the harvested grain culms can be smoothly conveyed by the first stock base side conveying section.

In the present invention, it is preferable that the collapse suppressing member is positioned below the upper one of the first stock base side conveying section and the second stock base side conveying section.

According to the above-described characteristic configuration, the collapse suppressing member is positioned below the upper one of the first stock base side conveying section and the second stock base side conveying section. It can act effectively, and it is possible to more effectively suppress the occurrence of falling of harvested grain culms in the delivery section.

In the present invention, the collapse suppressing member extends rearwardly upward from a lower one of the first stock base side conveying section and the second stock base side conveying section, and the collapse suppressing member It is preferable that the rear end portion is positioned between the first stock base side conveying section and the second stock base side conveying section.

According to the above-described characteristic configuration, it is possible to easily support the collapse suppressing member, and to effectively suppress the occurrence of collapse of harvested grain culms in the delivery section.

In the present invention, it is preferable that the collapse suppressing member is positioned upstream of the second stock base side conveying section in the conveying direction of the second stock base side conveying section.

According to the above-described characteristic configuration, the grain harvested culms are suppressed from falling down, and the action of the tilting suppression member effectively assists the delivery of the harvested grain culms to the second stock base side conveying section, so that the threshing device It is possible to efficiently convey harvested grain culms to.

In the present invention, it is preferable that the collapse suppressing member is located at a position away from the first stock base side conveying section upstream in the conveying direction of the second stock base side conveying section.

According to the above-described characteristic configuration, the grain harvested culms conveyed in a normal posture are prevented from coming into contact with the collapse suppressing member, so that the harvested grain culms can be smoothly conveyed.

In the present invention, it is preferable that an end portion of the collapse suppressing member on the downstream side in the transport direction of the first stock base side conveying portion is positioned below the first stock base side conveying portion.

According to the above characteristic configuration, it is possible to effectively suppress the collapse of the reaping grain culms while being conveyed to the first stock base side conveying section.

It is a left view which shows the whole combine. It is a schematic plan view which shows a reaping part. It is the figure which looked at the delivery part of the reaping grain culm in the reaping part from the direction orthogonal to the left conveying apparatus. It is a schematic right side view showing a reaping part. It is a schematic left side view showing a reaping part when not provided with a fall prevention member. It is a schematic left side view showing the reaping part in the case of being provided with a fall control member. It is sectional drawing of the reaping part by the plane which cross|intersects the conveyance direction of the stock base side conveyance part of the left conveyance apparatus. It is a figure which shows the raking wheel which concerns on other embodiment. It is a figure which shows the rail of the stock base side conveyance part in the right conveyance apparatus which concerns on other embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the combine of this invention is described based on drawing. In the following description, regarding the machine body 1 of the combine harvester, the direction of arrow F shown in FIG. shall be referred to as the “right side of the fuselage”.

[Overall configuration of combine harvester]
As shown in FIG. 1, the combine has a machine body 1 constructed by combining bar-shaped frame members and the like, and crawler-type traveling devices 2 mounted on both lateral sides of the machine body 1 . A driving part 3 is formed at one lateral end of the front part of the fuselage 1 . A cabin 4 covering an operation space is provided in the operation part 3. - 特許庁A driving section having an engine 5 is formed below the operating section 3 . A reaping part 6 is provided in the front part of the machine body 1 . The reaping part 6 is supported on the lateral side of the front part of the machine body 1 on the side opposite to the operating part so that it can be swung up and down between a lowering working state and a rising non-working state. A threshing device 7 and a grain tank 8 are provided side by side in the rear part of the machine body 1.例文帳に追加A grain discharging device 9 is connected to the rear end of the grain tank 8 .

In this combine harvester, the harvesting work of rice, wheat, soybeans, etc. as field crops is performed by lowering the reaping part 6 to a lowering work state and running the machine body 1 in this state. That is, in the harvesting unit 6, planted stalks located in front of the machine body 1 are harvested by a clipper-type harvesting device 10, and after the harvested grain culms join, a conveying device 11 (an example of a second conveying device) threshes a threshing device 7. transported to the front of the In the threshing device 7, the base side of the harvested grain culm from the conveying device 11 after merging is sandwiched by the threshing feed chain 12 and conveyed toward the rear of the threshing device 7, and the tip side of the harvested grain culm enters the threshing chamber (not shown). ) and is threshed by a rotating threshing drum 13, and the grains after threshing are separated from dust. The sorted grains are conveyed to the grain tank 8 by a grain lifting device (not shown) and stored. Grains stored in the grain tank 8 are discharged by the grain discharging device 9 .

[Reaping part]
As shown in FIGS. 1 and 2, the reaping part 6 includes a reaping part frame 14 extending forward from the front part of the machine body 1 in a forwardly lowered posture and capable of swinging up and down, and a tip part of the reaping part frame 14. It has seven branching rods 15 extending forward from. The seven branch rods 15 are arranged side by side in the width direction of the body 1 at intervals. Between adjacent branching rods 15, an introduction path R for introducing the planting stalk of one planting row to the raising device 16 and the harvesting device 10 is formed. Six introduction paths R are formed as a whole.

A divider 18 is supported at the tip of each branching rod 15 . The width W is the distance between the leftmost divider 18 and the rightmost divider 18 . Six triggering devices 16 are provided on the rear side of the divider 18 so as to be aligned in the lateral width direction of the fuselage 1 . The six triggering devices 16 are arranged in the lateral width direction of the fuselage 1 in a state in which one triggering device 16 corresponds to one introduction path R. A clipper-type reaping device 10 is provided behind the lower part of the pulling device 16 . The reaping device 10 is provided in a state extending over the branching rods 15 at both lateral ends, and can act on planting stalks introduced into the six introduction paths R. As shown in FIG. A raking belt 21 is provided behind each of the six pulling devices 16 .

Three conveying devices 19 (right conveying device 19R, middle conveying device 19C, left conveying device 19L (an example of a first conveying device) and one post-merger conveying device over the upper part of the harvesting device 10 and the front side part of the threshing device 7 A device 11 (an example of a second conveying device) is provided.The three conveying devices 19 are arranged in the cutting width direction. The middle conveying device 19C and the left conveying device 19L are arranged so that their conveying directions intersect with the post-merging conveying device 11. The post-merging conveying device 11 includes three conveying devices 19. It is provided over the delivery part 20 located behind and the front part of the threshing device 7.

In the following description, for the six introduction paths R, the first introduction path R1, the second introduction path R2, the third introduction path R3, the fourth introduction path R4, the fifth introduction path R5, and the sixth introduction path R6 are described in order from the right end. called.

When harvesting is performed in the six-row harvesting mode, planted culms are processed in the harvesting unit 6 as follows. The divider 18 guides the planting stem culm of the first planting row from the right end of the six planting rows to the first introduction path R1, and the planted grain culm of the second planting row is guided to the second introduction path R1. You are guided to the road R2. The planted culms that have been guided are lifted up by the raising device 16 and raked into the reaping device 10 by the raking belt 21 to be reaped by the reaping device 10 . The harvested culms introduced into the first introduction path R1 and harvested and the harvested culms introduced into the second introduction path R2 and harvested are transported to the rear delivery section 20 by the right transport device 19R.

The divider 18 guides the planting stem culm of the third planting row from the right end of the six planting rows to the third introduction path R3, and the planted grain culm of the fourth planting row is guided to the fourth introduction path R3. You are guided to the road R4. The planted culms that have been guided are lifted up by the raising device 16 and raked into the reaping device 10 by the raking belt 21 to be reaped by the reaping device 10 . The harvested culms introduced into the third introduction path R3 and harvested and the harvested culms introduced into the fourth introduction path R4 and harvested are transported to the rear delivery section 20 by the middle transport device 19C.

The divider 18 guides the planting stem culm of the fifth planting row from the right end of the six planting rows to the fifth introduction path R5, and the planted grain culm of the sixth planting row to the sixth introduction route R5. You are guided to the road R6. The planted culms that have been guided are lifted up by the raising device 16 and raked into the reaping device 10 by the raking belt 21 to be reaped by the reaping device 10 . The harvested culms introduced into the fifth introduction path R5 and harvested and the harvested culms introduced into the sixth introduction path R6 and harvested are conveyed to the rear delivery section 20 by the left conveying device 19L.

The harvested culms transported to the delivery unit 20 by the right transport device 19R, the middle transport device 19C, and the left transport device 19L are further transported rearward by the transport device 11 after joining, and are transported to the transport start end of the threshing feed chain 12. supplied. In other words, the conveying device 19 conveys the reaping grain culms toward the threshing device 7 . The post-confluence conveying device 11 receives harvested grain culms from the conveying device 19 and conveys them toward the threshing device 7 .

Specifically, as shown in FIG. 2, the right conveying device 19R includes a pair of left and right raking wheels 22 provided above the harvesting device 10, and a pair of raking wheels 22 and the delivery unit 20. and a right rear transport section 23 provided over the entire length. The left and right scraping wheels 22 are provided with scraping claws provided around the outer periphery, and rotate in a state where the scraping claws of the left and right scraping wheels 22 are engaged with each other. A conveying start end 19a of the right conveying device 19R is formed by left and right scraping wheels 22. As shown in FIG. The right rear conveying unit 23 includes a stem side conveying unit 23a that conveys the stem side portion of the harvested grain culm, and a stem side portion that is closer to the tip side than the portion of the harvested grain culm that is conveyed by the stem root side conveying unit 23a. A tip-side conveying portion 23b that conveys the portion is provided. The stock base side conveying part 23a transports the endless rotating chain 23c with protrusions for transporting the harvested grain culms, and the harvested grain culms which are arranged along the transport direction of the endless rotating chain 23c and are transported by the endless rotating chain 23c. and a guiding rail 23d. The tip-side conveying part 23b holds and conveys the tip side of the cut stem culm by means of an endless rotating chain provided with a holding and conveying arm.

In the right conveying device 19R, two grain harvested culms, the harvested grain culms introduced into the first introduction path R1 and harvested, and the harvested grain culms harvested into the second introduction path R2, The left and right raking wheels 22 rake it backward and supply it to the right rear conveying section 23 (the stock side conveying section 23a and the tip side conveying section 23b). It is conveyed to the transfer section 20 by the conveying section 23a and the tip-side conveying section 23b).

Specifically, as shown in FIG. 2, the intermediate conveying device 19C includes a pair of right and left raking wheels 24 provided above the harvesting device 10, and a pair of raking wheels 24 and the delivery unit 20 and a middle/rear transport section 25 provided over the entire length of the belt. The left and right scraping wheels 24 are provided with scraping claws provided around the outer periphery, and rotate in a state where the scraping claws of the left and right scraping wheels 24 are engaged with each other. A conveying start end 19a of the middle conveying device 19C is formed by left and right scraping wheels 24. As shown in FIG. The middle and rear conveying unit 25 includes a stem side conveying unit 25a that conveys the stem side portion of the harvested grain culm, and a stem side conveying unit 25a that is a portion of the harvested grain culm closer to the tip side than the portion conveyed by the stem root side conveying unit 25a. and a portion of the right rear conveying portion 23 of the right conveying device 19R that reaches the delivery portion 20 from an intermediate portion. The stock base-side conveying unit 25a carries an endless rotating chain 25c with protrusions for transporting harvested grain culms, and a harvested grain culm arranged along the conveying direction of the endless rotating chain 25c and conveyed by the endless rotating chain 25c. and a guiding rail 25d. The tip-side conveying unit 25b holds and conveys the tip side of the cut stem culm by means of an endless rotating chain provided with a holding and conveying arm.

In the intermediate conveying device 19C, two harvested grain culms, one harvested grain culm introduced into the third introduction path R3 and harvested, and the other harvested grain culm introduced into the fourth introduction path R4 and harvested, The left and right raking wheels 24 rake it backward and supply it to the beginning of the transportation of the middle and rear conveying sections 25 (the stock base side conveying section 25a and the tip side conveying section 25b). It is conveyed to the delivery section 20 by the conveying section 25a and the tip-side conveying section 25b) and the right conveying device 19R. In other words, the middle portion of the right rear conveying portion 23 in the right conveying device 19R consists of the conveying of harvested grain culms of the first introduction path R1 and the second introduction path R2 and the harvested grain of the third introduction path R3 and the fourth introduction path R4. It is also used for transporting culms.

Specifically, as shown in FIG. 2, the left conveying device 19L includes a pair of left and right raking wheels 26 provided above the harvesting device 10, and a pair of raking wheels 26 and the transfer unit 20 and a left rear conveying section 27 provided over the entire length. The left and right scraping wheels 26 are provided with scraping claws provided around the outer periphery, and rotate in a state where the scraping claws of the left and right scraping wheels 26 are engaged with each other. A conveying start end 19a of the left conveying device 19L is formed by left and right scraping wheels 26. As shown in FIG. The left rear conveying unit 27 includes a stock base side conveying unit 27a (an example of the first stock base side conveying unit) that conveys the base side portion of the harvested grain culms, and the stock base side conveying unit 27a that conveys the harvested grain culms. and a tip-side conveying unit 27b (an example of a first tip-side conveying unit) that conveys a tip-side portion that is a portion closer to the tip than the portion.
The stock base side conveying portion 27a is arranged along the conveying direction of the endless rotating chain 27c (an example of the first stock base side chain) with projections for conveying the harvested culms and the endless rotating chain 27c. A rail 27d (an example of a first root side guide member) that guides the harvested grain culms conveyed by the chain 27c. The tip-side conveying part 27b holds and conveys the tip side of the cut stem culm by means of an endless rotating chain provided with a holding and conveying arm.

In the left conveying device 19L, two grain harvested culms, the grain harvested culm introduced into the fifth introduction path R5 and harvested, and the harvested grain culm harvested into the sixth introduction path R6, The left and right raking wheels 26 rake it rearward and supply it to the left rear conveying section 27 (the stock side conveying section 27a and the tip side conveying section 27b), and the left rear conveying section 27 (the stock side It is conveyed to the transfer section 20 by the conveying section 27a and the tip-side conveying section 27b).

As shown in FIG. 2, the post-confluence conveying device 11 includes a stock base side conveying unit 11a (an example of a second stock base side conveying unit), a stock base side conveying unit 11b, and a tip side conveying unit 11c (second tip). (an example of a side transport unit). The stem base side conveying unit 11a and the stem base side conveying unit 11b convey the stem base side portion of the reaping grain culms. The tip-side conveying unit 11c conveys the tip-side portion of the harvested grain culm that is closer to the tip than the portions conveyed by the base-side conveying units 11a and 11b.

The stock base side conveying unit 11a includes an endless rotating chain 11d (an example of a second stock base side chain) with projections for conveying harvested culms, and an endless rotating chain 11d arranged along the conveying direction of the endless rotating chain 11d. and a rail 11e (an example of a second root side guide member) that guides the harvested grain culms conveyed by the chain 11d. The stock base side conveying section 11a conveys the reaping grain culms conveyed to the transfer section 20 backward, and supplies them to the conveyance starting end portion of the stock base side conveying section 11b.

The stock base side conveying unit 11b transports the endless rotating chain 11f with protrusions for transporting the harvested culms, and the harvested culms arranged along the transport direction of the endless rotating chain 11f and transported by the endless rotating chain 11f. and a guiding rail 11g. The stock base side conveying part 11 b conveys the harvested grain culm conveyed to the conveying start end rearward and supplies it to the conveying start end of the threshing feed chain 12 .

The head-side conveying part 11c rearwardly locks and conveys the head side of the harvested grain culm transported to the delivery part 20 by an endless rotating chain provided with a locking conveying arm, and locks it near the front side of the threshing device 7. The transport is released to allow the threshing feed chain 12 to take over the harvested culms. The tip side transport portion 23b in the right rear transport portion 23 of the right transport device 19R is provided with an extension tip side transport portion extending from the delivery portion 20 near the front side of the threshing device 7, and the extension tip side transport portion joins the transport device 11 after joining. , the tip-side conveying portion 11c is configured.

11a is supported in a state in which the vertical posture can be changed. Along with the change in posture, the position of the end portion of the transfer is changed in the culm length direction of the reaping grain culm with respect to the base-side transfer portion 11b. By changing the attitude of the stock base side conveying part 11a, the depth of treatment of the reaping grain culms with respect to the threshing device 7 can be changed. In other words, an adjusting mechanism capable of adjusting the threshing depth of the reaping grain culms to the threshing device 7 is configured by the stock base side conveying section 11b.

[Collapse control member]
In the present embodiment, as shown in FIG. 3-5 , the tip-side transport portion 27b and the tip-side transport portion 11c in the delivery portion 20 of the harvested grain culms from the left transport device 19L to the post-merge transport device 11 are positioned below In addition, a collapse suppressing member 40 is provided which acts on the base side of the harvested grain culms to suppress the collapse of the harvested grain culms. The collapse suppressing member 40 is an elastically deformable thin rod-shaped member, and is formed by bending a piano wire, for example. A base end portion of the collapse suppressing member 40 is supported by a support portion 27e that supports the rail 27d.

As shown in FIG. 3 , the collapse suppressing member 40 extends from the base end in a direction that intersects the left-right direction of the fuselage, more specifically, in a direction substantially orthogonal to the left-right direction of the fuselage. As shown in FIG. 4 , the collapse suppressing member 40 extends rearward from the base end portion of the fuselage, and then extends rearward and obliquely upward.

In the present embodiment, as shown in FIG. 4, near the transfer section 20, the stock base side conveying section 27a of the left conveying device 19L is located above the stock base side conveying section 11a of the post-merging conveying device 11. As shown in FIG. The collapse suppressing member 40 is located below the stock base side conveying portion 27a of the left conveying device 19L. Specifically, the collapse suppressing member 40 extends rearwardly upward from the lower side of the stock base side conveying portion 11 a of the post-merging conveying device 11 . A rear end portion of the collapse suppressing member 40 is positioned between the stock base-side conveying portion 27a of the left conveying device 19L and the stock base-side conveying portion 11a of the post-merging conveying device 11 .

As shown in FIGS. 3 and 4, the conveying direction K1 of the stock base side conveying portion 27a of the left conveying device 19L is obliquely rear right and obliquely upward. The conveying direction K2 of the root-side conveying portion 11a of the post-merging conveying device 11 is diagonally backward to the left and diagonally upward. The collapse suppressing member 40 is positioned upstream of the stock base-side conveying section 11a in the conveying direction K2 of the stock base-side conveying section 11a. In addition, the collapse suppressing member 40 is located upstream of the stock base side conveying section 11a in the conveying direction K2 with respect to the stock base side conveying section 27a. Then, the end portion of the collapse suppression member 40 on the downstream side in the conveying direction K1 of the stock base side conveying portion 27a is positioned below the stock base side conveying portion 27a.

[Suppression of Falling of Harvested Grain Culls by Falling Suppression Member]
FIG. 5 shows how harvested grain culms are conveyed in the harvesting unit 6 in which the collapse suppressing member 40 is not provided. A crop (crop P51) in a field is cut by the harvesting device 10 and conveyed obliquely upward and rearward by the root-side conveying portion 27a and the tip-side conveying portion 27b of the left conveying device 19L (the harvested stalk P52). The harvested grain culms that have reached the transfer unit 20 are originally transferred to the 11a of the transfer device 11 after the confluence of the stem side portion, and the tip side portion is transferred to the tip side transfer portion 11c of the confluence transfer device 11. be handed over.

Here, compared to the tip-side conveying portion 11c, which is an endless rotating chain provided with a locking conveying arm, the stock-side conveying portion 11a that conveys the stem-side portion with the endless rotating chain 11d and the rail 11e has a , the harvested culms are difficult to be delivered. In other words, it is difficult for the harvested culms to enter between the endless rotating chain 11d and the rail 11e. When the stem-side portion is not conveyed by the stem-side conveying portion 11a and remains in the delivery portion 20, and the tip-side portion is conveyed by the tip-side conveying portion 11c and moves, the reaping grain culms are in a vertically extending posture (reaping Grain culm P52) becomes a posture of falling diagonally (reaped grain culm P53). If the grain harvested culm falls excessively, the tip-side portion of the grain harvested culm may drop off from the tip-side conveying unit 11c (grain harvested culm P54), and the entire harvested grain culm may drop to the field. Further, if the harvested culms are conveyed to the conveying device 11 after merging in a tilted posture, the harvested culms may be fed to the threshing device 7 in a bad posture. Such falling of the harvested grain culms due to retention of the harvested grain culms in the delivery unit 20 occurs when the amount of the harvested grain culms harvested by the harvesting device 10 and transported to the delivery unit 20 by the transport device 19 is small. more likely to occur. Here, when only some rows are harvested, for example, when only one row at the left end of a 6-row combine harvester is harvested, the harvested grain culms transported to the delivery unit 20 by the transport device 19 are less quantity. When the amount of grain harvested culms conveyed to the delivery unit 20 by the conveying device 19 is sufficiently large, the grain harvested culms that have reached the delivery unit 20 are pushed more and more by the following grain harvested culms, so that the grain harvested culms immediately reach the base side of the stock. Since the stock is conveyed by the conveying portion 11a, it is difficult for the portion on the side of the stock to remain in the transfer portion 20.例文帳に追加

FIG. 6 shows how harvested grain culms are conveyed in the harvesting unit 6 provided with the tilting suppression member 40 . A crop (crop P61) in a field is cut by the harvesting device 10 and conveyed obliquely upward and rearward by the root-side conveying portion 27a and the tip-side conveying portion 27b of the left conveying device 19L (cutted grain stalks P62). The harvested grain culms (harvested grain culms P63) that have reached the transfer unit 20 are transferred to 11a of the conveying device 11 after the stem side portion is joined, and the tip side portion is transferred to the tip side conveying portion 11c of the conveying device 11 after joining. passed to. At this time, it is assumed that the stem-side portion is not transported to the root-side conveying portion 11a and stays in the delivery portion 20, and the tip-side portion is transported to the tip-side transport portion 11c and moved. The grain harvested culms tend to fall obliquely from the vertically extending posture (grain harvested culms P63) like the grain harvested culms P54 in FIG. Then, the portion of the harvested grain culm P63 on the side of the root of the plant comes into contact with the suppressing member 40, and excessive collapse of the harvested grain culm is suppressed. Then, the base side portion of the harvested grain culm P63 is hooked on the projection of the endless rotating chain 11d and begins to be conveyed by the base side conveying portion 11a. In this manner, the harvested culms are conveyed by the root-side conveying portion 11a and the tip-side conveying portion 11c in a posture extending in the vertical direction (cropped grain culms P64).

FIG. 7 is a cross-sectional view of the delivery section 20 along the conveying direction K1 of the stock base side conveying section 27a. Harvested grain culms P71 are conveyed to the base-side conveying section 27a along the rail 27d and advance toward the transfer section 20 in the depth direction of the paper surface. The harvested grain culm P72 that has reached the transfer section 20 is separated from the rail 27d. When the grain harvested culms P72 tend to fall obliquely, the root side portion of the harvested grain culms P72 comes into contact with the suppressing member 40, and excessive collapse is suppressed. Then, the stem side portion of the harvested grain culm P72 advances between the endless rotating chain 11d and the rail 11e, is hooked on the projection of the endless rotating chain 11d, and is transported along the rail 11e by the stem side conveying section 11a. Transportation begins (culm harvest P73). In this manner, harvested grain culms are conveyed by the stem-side conveying portion 11a and the tip-side conveying portion 11c in a vertically extending posture.

[Other embodiments]
[1] The shape and arrangement of the collapse suppressing member 40 and the like are not limited to the example shown in the above embodiment. For example, the collapse suppressing member 40 may be positioned above the stock base side conveying portion 27 a of the left conveying device 19</b>L and the stock base side conveying portion 11 a of the post-confluence conveying device 11 . In the vicinity of the transfer section 20, the stock base side conveying section 11a of the post-merging conveying device 11 may be located above the stock base side conveying section 27a of the left conveying device 19L. It may be positioned below the stock base side conveying section 11 a of the device 11 .

[2] A plurality of collapse suppression members 40 may be provided. A plurality of fall suppression members 40 may be provided corresponding to each of the plurality of transport devices 19 . A plurality of fall-down suppressing members 40 may be provided corresponding to the transfer portion between one transport device 19 and the post-merge transport device 11 .

[3] As shown in FIG. 8, the scraping claw portion 22a of the scraping wheel 22 may be provided with a concave portion 22b. Since the harvested culms P81 are caught in the recess 22b, the harvested culms P81 can be reliably raked rearward by the raking wheel 22 and supplied to the right rear conveying section 23. As shown in FIG. Instead of or in addition to the concave portion 22b, the scraping claw portion 22a may be provided with a convex portion, or the surface of the scraping claw portion 22a may be surface-treated to increase the frictional force. The reliability of raking the harvested grain culms by the raking wheels 22 and supplying them to the right rear conveying section 23 can be increased similarly by the convex portion and the surface processing. Similar effects can be obtained for the rake wheel 24 and the rake wheel 26 by providing concave portions, convex portions, and surface finishing.

[4] FIG. 9 shows another form of the rail 23d of the stock base side conveying portion 23a in the right conveying device 19R. In this alternative form, the radius of curvature of rail 23d is larger than the radius of curvature of rail 23d in the above embodiment (see FIG. 2). As a result, the harvested grain culms harvested by the harvesting device 10 and sent rearward by the raking wheel 22 are more smoothly transported between the endless rotary chain 23c and the rail 23d. In this way, it is possible to prevent the harvested culms from being conveyed to the stem side conveying section 23a and the tip side conveying section 23b in a state of being greatly inclined. A similar effect can be obtained by increasing the radius of curvature of the rail 25d of the middle conveying device 19C and the rail 27d of the left conveying device 19L.

INDUSTRIAL APPLICABILITY The present invention can be used for a combine harvester (for example, a self-threshing combine harvester).

6: Reaping part 7: Threshing device 11: Conveying device after merging (second conveying device)
11a: stock base side conveying unit (second stock base side conveying unit)
11c: tip-side transport unit (second tip-side transport unit)
11d: endless rotating chain (second stock base side chain)
11e: Rail (Second stock base side guide member)
19L: Left conveying device (first conveying device)
20: Delivery unit 27a: Stock origin side conveying unit (first stock origin side conveying unit)
27b: tip-side transport unit (first tip-side transport unit)
27c: Endless rotating chain (first stock side chain)
27d: rail (1st share base side guide member)
40: Collapse suppression member K1: Conveyance direction K2: Conveyance direction

Claims (6)

Equipped with a harvesting unit that harvests planted grain culms and conveys them toward the rear threshing device,
The harvesting unit includes a first conveying device that conveys harvested grain culms toward the threshing device, and a conveying direction of the first conveying device that intersects with the first conveying device to receive the harvested grain culms from the first conveying device. and a second conveying device that conveys toward the threshing device,
The first conveying device includes a first stock side conveying portion that conveys the base side portion of the harvested grain culm, and a portion of the harvested grain culm that is closer to the tip than the portion conveyed by the first stock side conveying portion. A first tip-side conveying unit that conveys a certain tip-side part,
The second conveying device includes a second stock side conveying unit that conveys the base side portion of the harvested grain culm, and a portion of the harvested grain culm that is closer to the tip than the portion conveyed by the second stock side conveying unit. A second tip-side transport unit that transports a certain tip-side part,
The first stock base side conveying unit is arranged along the conveying direction of the first stock base side chain that conveys harvested culms and the first stock base side chain, and is conveyed to the first stock base side chain. a first stock base side guide member that guides the harvested grain culms,
The second stock base side conveying unit is arranged along the conveying direction of the second stock base side chain that conveys the harvested culms and the second stock base side chain, and is conveyed to the second stock base side chain. a second root side guide member for guiding the harvested grain culms,
Acts on the base side of the harvested culms below the first tip-side transporting unit and the second tip-side transporting unit in the delivery portion of the harvested grain culms from the first transport device to the second transport device and a collapse suppression member that suppresses the collapse of the harvested grain culm ,
the collapse suppressing member is elastically deformable in a direction of approaching or separating from the first stock base side conveying portion;
When viewed from the direction orthogonal to the first conveying device, the base end of the collapse suppressing member is located on the opposite side of the first stock base side chain from the first stock base side guide member, and the collapse A combine harvester in which a suppressing member intersects the first stock base side guide member and extends to the same side as the first stock base side chain with respect to the first stock base side guide member. 2. The combine according to claim 1, wherein said collapse suppressing member is positioned below one of said first stock base side conveying section and said second stock base side conveying section which is positioned above. The collapse suppressing member extends rearwardly upward from a lower side of the first stock base side conveying portion and the second stock base side conveying portion, and the rear end portion of the collapse restraining member The combine according to claim 1 or 2 located between said 1st stock origin side transportation part and said 2nd stock origin side transportation part. The combine according to any one of claims 1 to 3, wherein the collapse suppressing member is positioned upstream of the second stock base side conveying section in the conveying direction of the second stock base side conveying section. The combine according to claim 4, wherein the collapse suppressing member is positioned away from the first stock base side conveying section toward the upstream side in the conveying direction of the second stock base side conveying section. 6. The end portion of the collapse restraining member on the downstream side in the conveying direction of the first stock base side conveying portion is positioned below the first stock base side conveying portion. combine.

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