JP2013027355A - Reaping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping device preventing berry drop in taking over grain culm from a grass separating guide separating grain culm to a raising device.SOLUTION: The reaping device includes: an upper inclined face (12u) more gently inclined upward than the angle of tilt of the grain culm raising device (8) formed on an upper part of the grain culm raising device (8); grass separating guides (74, 75) extending upward from the grass separator (7); and topside grass separating parts (74s, 75s) on the upper part of the grass separating guides (74, 75), continuing with the upper inclined face (12u) toward the low end (12c) of the upper inclined face (12u).

Description

  The present invention relates to a reaping device.

  In the prior art disclosed in Patent Document 1, a combine harvester including a weed body and a cereal raising device includes a weed guide extending upward from the weed body. By providing a weeding guide, the head side of the cereal is divided by the weed body, the tip side is sown by the weeding guide, and the cereal is guided smoothly into the path of the cedar raising device. can do.

JP 2008-182990 A JP 2002-176825 A

However, the weed guide described in Patent Document 1 is connected to the culm pulling device in a side view substantially orthogonally to the culm pulling apparatus, so that the tip of the culm that is guided by the weed guide There was a problem that the portion was caught on the upper end of the weed guide and water droplets and mud were scattered from the cereal cocoon, the grain was shed, and the cocoon was broken. In addition, in order to prevent the scattering of grains and the like, in Patent Document 2, a cover body is provided on the upper part of the cereal pulling apparatus. In the case of changes, there is a problem that the scattered matter cannot be effectively blocked, and the scattered grains etc. accumulate on each part of the mowing device, so that the transportation of the cereal can not be carried out smoothly, or the scattered water droplets The durability of the reaping device may be reduced by adhering to the transmission portion.

The present invention that has solved the above problems is as follows.

  That is, the invention according to claim 1 is a culm raising device (7) for weeding planted cereals, and a culm pulling device in an upward inclined posture for raising the cereals weeded by the weeding body (7) ( 8), an upper inclined surface (12u) is formed on the upper portion of the culm pulling device (8), the upper inclined surface (12u) sloping upward gently from the inclination angle of the culm pulling device (8), A weeding guide (74, 75) extending upward from the weeding body (7) is provided, and at the upper part of the weeding guide (74, 75), a lower end portion of the upper inclined surface (12u) ( 12c), the upper weeding portion (74s, 75s) continuous with the upper inclined surface (12u) is formed.

  The invention according to claim 2 is provided with a cover body (15) for covering the upper part of the raising path (K) of the grain raising apparatus (8) above the grain raising apparatus (8). (15) The reaping device according to claim 1, wherein the reaping device is switchable between a closed state along the inclination of the upper inclined surface (12u) and an open state in a posture rotated upward from the closed state. .

  According to a third aspect of the present invention, the cover body (15) is rotatably supported around the cover body support shaft (16) in the left-right direction on the upper part of the grain raising device (8) at the left and right ends. The weeding guide (74) is provided between two intermediate pulling devices (8c) arranged with the non-lifting working side where the pulling lug (14) does not protrude facing each other to open the cover body (15). The reaping device according to claim 2, wherein when the state is changed, a cereal passage space (15s) is formed between an upper end portion of the intermediate pulling device (8c) and the cover body (15). .

  According to a fourth aspect of the present invention, the cover body (15) is rotatably supported around the cover body support shaft (16) in the left-right direction on the upper part of the grain raising device (8) at the left and right ends. The weeding guide (74) is provided between two intermediate pulling devices (8c) arranged so that the non-raising action side where the raising lug (14) does not protrude is opposed to each other, and above the weeding guide (75). The weed portion (75s) is extended upward from the upper end portion of the central pulling device (8c), and the cover body support shaft (16) is rotatably supported on the upper end portion of the upper weed portion (75s). A reaping device according to claim 2.

  According to a fifth aspect of the present invention, there is provided an adjusting body (50) supported at the front end of the cover body (15) so as to be rotatable around a support shaft (51) in the left-right direction. A reaping device according to claim 4.

According to the first aspect of the present invention, the upper weeding which is continuous with the upper inclined surface (12u) toward the lower end (12c) of the upper inclined surface (12u) is provided on the upper portion of the weeding guide (74, 75). By forming the portion (74s, 75s), the cereal husk guided by the upper weed portion (74s, 75s) of the rearward rising slope is formed in a continuous slope with the upper weed portion (74s, 75s). It can be smoothly inherited to the upper inclined surface (12u).
According to invention of Claim 2, in addition to the effect by the invention of Claim 1, it is guided to the weeding guide (74, 75) or the upper inclined surface (12u) of the grain raising device (8). Even if grains, water droplets, etc. are scattered upward from the cereal cocoon in the state of being scattered, the scattered matter is effectively blocked by rotating and adjusting the cover body (15) according to the scattered state. be able to.
According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, when the cover body (15) is changed to the open state, the cover body (15) and the intermediate pulling device (8). Cereal passing space (15 s) is formed between the upper part of the intermediate pulling device (8), and even in the long cocoon where the tip part is present to a position higher than the upper end part of the intermediate pulling device (8) 15) or detachment due to interference with the intermediate pulling device (8) can be prevented.
According to the invention described in claim 4, in addition to the effect of the invention described in claim 2, the cover body (15) is connected to the grain raising device (8) and the weed guide (75) at the left and right ends. Since it supports, the support rigidity of a cover body (15) can be improved.
According to the invention described in claim 5, in addition to the effect of the invention described in claim 2 or claim 3 or claim 4, the adjusting body (50) is rotated about the support shaft (51) in the left-right direction. Thereby, scattering of the grain etc. to the upper part of a grain raising apparatus (8) can be prevented still more effectively.

It is a side view of a combine. It is a front view of the main part of a combine. It is a top view of a combine main part. It is a side view of the principal part of a grain raising apparatus. It is a side view of a combine. It is a front view of the main part of a combine. It is a top view of a combine main part. It is a side view of the principal part of a grain raising apparatus. It is a side view of a combine. It is a front view of the main part of a combine. It is a top view of a combine main part. It is a side view of the principal part of a grain raising apparatus. It is a principal part side view of a combine. It is a front view of the principal part of a grain raising apparatus and an auxiliary raising apparatus. It is a side view of the principal part of a grain raising apparatus and an auxiliary raising apparatus. It is a side view of a reaping device. It is a front view of a reaping device. It is a side view of a reaping device. It is a front view of a reaping device. It is a top view of the principal part of a reaping device. It is explanatory drawing which shows the principal part of a reaping apparatus.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  1 to 4, FIGS. 5 to 8, and FIGS. 9 to 12 show the combine in different states. This combine is provided with a pair of left and right traveling crawlers 2, 2 on a traveling vehicle body 1, a mowing device 4 is installed in front of a threshing device 3 mounted on the rear, and a driver's seat 5 and an operation are installed on the side of the mowing device 4. A driving operation unit such as a box 6 is provided, and a Glen tank G for temporarily storing threshing grains is provided behind the driving operation unit.

  The reaping device 4 is a herb body 7, 7... Which divides the cereal planted in the field to the left and right, and four hulls cereal cereal erection that causes the cereal after the weeding to occur along the path K. Devices 8, 8, 8, 8; a cutting blade device 9 that cuts near the root of the culm after raising and reaps the culm; and a cutting blade that rakes the root of the cereal after splitting There is a scraping and transporting device 10 that transports backward through the device 9, and a lifting transport and supply device 11 that changes the posture while taking up and transporting the cereal straw after the scraping and transporting it to the threshing device 3. Is.

  The reaping device 4 is equipped with a reaping main frame 21 so as to be movable up and down with respect to the traveling vehicle body 1. More specifically, the cutting main frame 21 is configured to rotate up and down with a cutting input shaft 23 provided on the cutting suspension base 22 as a fulcrum, and the cutting device 4 moves up and down by the expansion and contraction operation of the cutting lifting cylinder 24. It is like that.

  A transmission frame 72 is fixed to the front end of the cutting main frame 21 along the left-right direction at the lower part of the cutting device 4. The weed bodies 7, 7... Are attached to the front end portions (front end portions) of a plurality of weed frame 73 extending forward from the transmission frame 72, respectively.

  The grain raising device 8 is driven by being wound around front and rear raising cases 12 and 13 that can be divided into front and rear, and transmission sprockets and tensioning wheels (not shown) that are housed in the raising cases 12 and 13. It has an endless pull-up chain and pull-up lugs 14 attached to the pull-up chain at a predetermined interval. The raising lug 14 raises from the cases 12 and 13 and protrudes to the side on the path K side to raise the cereal when the raising lug 14 moves upward and obliquely upward along with the raising chain. The front raising case 12 is configured to be detachably attached to the rear raising case 13, and when it is pulled upward, the locked state is released and can be taken out to the front side. The front side of each of the front raising cases 12, 12,... Has a rearward inclined posture in which the upper inclined surface 12u is inclined more gently than the lower side (the inclination angle of the front surface of the upper inclined surface 12u with respect to the vertical surface is larger than the lower end side). As shown in FIG. 9, the operator's line of sight is shown by a two-dot chain line in FIG. 9, the field of view near the weeding position is good in the sitting position, and the weeding position is good in the standing position. It is configured to be visible. Reference numeral 12c indicates the bent position (the lower end of the upper inclined surface 12u).

  The cutting blade device 9 is of a clipper type, and is disposed on a weed frame 73 protruding forward from the lower end of the cutting main frame 21 that supports the cutting device 4. The planter side of the planted cereal rice cake in a state where the stocker side receives the scraping action by the scraping conveyance device 10 is cut.

  After harvesting, the culm is transported rearward by the scraping and transporting device 10 and delivered to the lifting and transporting supply device 11, and the posture is changed in the lifting and transporting process by the lifting and transporting supply device 11. It is delivered and supplied to the threshing device 3. As the lifting and conveying supply device 11, a known configuration in which the stock side is held between a chain and a holding rod and the tip side is picked up by a transfer lug and transferred can be adopted.

(Mowing balance spring)
A cutting balance spring 90 is provided between the cutting main frame 21 and the traveling vehicle body 1 to raise and bias the cutting device 4. When the reaping device 4 receives a pushing-up force due to unevenness or the like of the farm scene, the reaping force is easily raised by the urging force of the reaping balance spring 90. Therefore, it is possible to cut and travel while the cutting unit moves up and down along the unevenness of the farm scene.
An end portion of the balance spring 90 on the traveling vehicle body 1 side is attached to a left-right frame portion 1 f corresponding to a front end portion of the traveling vehicle body 1 on the threshing device side.

(Scratch transfer device)
FIG. 20 and FIG. 21 show the scraping and conveying apparatus 10. The above-described scraping and transporting device 10 includes a scraping device 10a that scrapes the cereal after raising, and an intermediate transporting device 10b that takes over the culm from the scraping device 10a and delivers it to the lifting and feeding and feeding device 11. Prepare.

  The take-up device 10a has a take-up lug device 80 in which a front end portion is brought close to the back side of the grain raising device 8 and a lug belt is wound around a driven wheel at the front end portion and a drive wheel at the rear, and the take-up lug The driving wheel of the device 80 includes a plurality of driven star wheels 82 that are driven coaxially, and the driven star wheel 82 faces above the cutting blade device 9.

The stocker-side transport device of the intermediate transport device 10b sandwiches and transports the cereal straw that has been cut and fed backward by the stir-in star wheel 82. Note that, in the four-row mowing device 4, the right conveying device 81R and the left conveying device 81L convey cereals corresponding to two items, respectively.
Of the above-mentioned starfoil 82, two of the left side cereals are scraped, and one of the rightmost ones is a large diameter starfoil 82b formed to have a large diameter, and the largemost rightmost wheel 82b. One that meshes with the diameter star wheel 82b is a small diameter star wheel 82s formed with a smaller diameter than the large diameter star wheel 82b. Since the small-diameter star wheel 82s is arranged close to the conveyance path of the right conveyance device 81R, the small-diameter star wheel 82s has a small diameter in order to secure the conveyance path of the right conveyance device 81R.
A scraper 83 for removing swarf and the like accumulated on the upper surface of the cutting blade device 9 is provided on the lower surface side (the cutting blade device 9 side) of the rightmost large diameter star wheel 82b and the small diameter star wheel 82s. ing. A rubber plate 83a is attached to the lower part of the scraper 83 and is deformed by the unevenness of the upper surface of the cutting blade device 9, so that it also acts on a part such as a concave part where it is difficult to remove sawdust and can be effectively removed. .
Further, any of the scrapers 83 (small-diameter star wheel 82 s side in the illustrated example) is biased from the rotation center of the star wheel, so that the culm can be prevented from being caught between the scrapers 83.

(Cover body)
The upper part of each grain raising apparatus 8 has a structure covered with a cover body 15 that is long in the lateral direction. The cover body 15 can be formed of a metal plate or a resin such as polycarbonate. In this case, it is preferable that the cover body 15 is transparent or semi-transparent to ensure visibility through the cover body 15.

  The cover body 15 is disposed on the upper extension line of the rising locus of the raising lug 14 that rises along the raising path K of the grain raising device 8, and in the side view, the upper inclined surface 12 u of the front raising case 12 is raised. The tilting posture in the front-rear direction can be freely changed to a state along the tilting posture and a state of covering the upper part of the raising path K in the raising lug 14 that moves up and down. And as an attitude | position change means of this cover body 15, although it can also be set as the slide structure of front and back, up and down, as shown in FIGS. 9-12 in a present Example, the back part of the grain raising apparatus 8 of a left end and a right end Support stays 8s and 8s are respectively provided on the side, and a cover body support shaft 16 extending in the left-right lateral direction is installed between the support stays 8s and 8s. As a rotation fulcrum, it is configured to swing open and close so as to swing up and down. The posture change state (open posture) in which the open side upward of the cover body 15 is raised and covers the upper side of the path K, and the posture change state in which the close side downward is raised forward to cover the front surface of the upper inclined surface 12u of the case 12 is performed. (Closed posture). The cover body 15 can be opened and closed by a tension spring 17 provided in the vicinity of the rotation fulcrum so that the spring tension direction can be switched between the closed side and the open side with respect to the fulcrum of the cover body support shaft 16. Can be swing open and closed.

  The cereals after weeding are caused by the raising lugs 14 that are raised from the raising cases 12 and 13 of the grain raising device 8 and project and rise in the path K from the plant side to the tip side. The grain or the like may be scattered toward the operator of the driver's seat 5 due to the pulling action, but the cover body 15 is raised to the lag by changing the posture to an open posture intersecting with the scattering direction of the grain or the like. The grains scattered by 14 can be effectively blocked by the cover body 15.

  The cover body 15 can be formed in an appropriate shape such as a flat plate shape. However, as in the present embodiment, the cover body 15 is substantially U-shaped in a side view so as to be composed of an upper surface cover portion 15a and a rear surface cover portion 15b. If it is formed in the upper surface cover portion 15a, the lower surface portion of the upper surface cover portion 15a can prevent upward scattering of grains and the like, and the lower surface portion of the rear surface cover portion 15b can prevent scattering of grains and the like rearward and upward. Therefore, it is preferable because it is possible to reliably prevent the grains and the like from being scattered to the driver's seat 5.

  The cover body 15 is preferably arranged so that the upper surface cover portion 15a is raised and intersects with the upward extension line of the rising locus of the lug 14 in the open state, but the rear surface cover portion 15b is raised and intersects with the upper extension line of the rising locus of the lug 14 It is also possible to arrange them. Further, the cover body 15 is raised and shifted from the upper extension line of the rising locus of the lug 14 to the rear side, and the adjusting body 50 described later is raised by the front enlargement of the cover range to be positioned on the upper extension line of the raising locus of the lug 14. A structure is also possible.

  Like the multi-row harvesting combine of the present embodiment, when each of the left and right sides of the pulling device in the middle in the left-right direction has a path to be raised, the grain of the adjacent row is separated by the weed body in front of the lower part of the pulling device. Introduced into each of the wake-up paths. However, in the case where the culm is a long culm, it is cut by the cutting blade device 9 while being crossed across the pulling device without being entangled and separated by the tip of the adjacent culm and transported backward. There is. At this time, if the upper end of the pulling device and the cover body 15 are in contact with each other, a cross portion straddling the pulling device is caught by the contact portion and cannot be passed rearward and is clogged. Moreover, even if the entanglement of the tip is forcibly solved by the conveying force of the cereal, the grain of the tip is shattered by the squeezing action between the tips or the squeezing action by the cover 15 and the corners of the cases 12 and 13. It is hard to avoid. Therefore, when it has a raising path on both the left and right sides of the grain raising apparatus 8 (intermediate raising apparatus 8c) in the middle in the left-right direction, the grain passing space is at least between the upper end of the grain raising apparatus 8 and the cover body 15. It is preferable to have a structure in which 15s is ensured, and by connecting the raised paths on the left and right sides by this culm passage space 15s, the structure passes through the rear as it is even if the tip part of the culm is crossed.

  Such a cereal pass space 15s may be formed so as to be formed regardless of the posture of the cover body 15. In that case, in the closed state of the cover body 15, the lower end of the cover body 15 and the upper end portion of the culm pulling device 8 are overlapped in a front view while forming a gap between the cover body 15 and the culm pulling device 8. Is desirable.

In addition, a pulling transmission shaft that extends across the plurality of the grain raising devices 8 is provided in the left-right direction on the upper portion of the grain raising device 8, and the drive shaft is branched from the raising transmission shaft toward each of the grain raising devices 8 to be driven. In this embodiment, the support stay 8s of the cover body 15 is fixed to the upper part of the pulling transmission shaft.
Thereby, the support rigidity of the cover body 15 can be improved.

  In this embodiment, the cutting side covers 18 and 18 arranged on the left and right sides of each grain raising device 8 are divided into an upper side cover 18a and a lower side cover 18b, and the upper side cover 18a is a lower side cover. The cover 18b is superposed on the upper side and the outer side, and is integrated with the cover body 15 by being connected to the cover 18b. The cutting side covers 18 and 18 and the upper side cover 18a may be formed as a single cover member. Thus, the upper side cover 18a can be used as a handle, and the cover body 15 can be swung together with the upper side cover 18a. Therefore, the posture change operation of the cover body 15 can be easily performed without providing a dedicated handle. Will be able to. In this embodiment, the cover body 15 and the upper side cover 18a cannot be removed unless the cover body 15 and the upper side cover 18a are rotated upward. Has a structure that functions as a lock mechanism that locks the case 12 and the lower side cover 18b by raising the front side by the downward movement thereof. Therefore, the lower side cover 18b superposed on the lower part of the upper side cover 18a can be easily attached and detached, and the maintenance of the cutting part is also easy.

(Regulator)
The adjusting body 50 attached to the front end portion of the cover body 15 so as to be rotatable by the support shaft 51 can effectively prevent the grains and the like from being scattered to the operator by rotating and projecting forward. In particular, when the adjustment body 50 is further extended forward in a state in which the cover body 15 is changed to an open posture that intersects with the scattering direction of the upper grain of the cereal habit raising device 8, the scattering prevention effect is enhanced.
And this adjustment body 50 can be stored in the back surface side of the cover body 15, and if the cover body 15 is made into a closed state in the state which stored the adjustment body 50, the adjustment body 50 will interfere with a grain candy. Can be prevented.
Further, the adjusting body 50 is formed with a folded portion at the tip side, and the rigidity of the adjusting body 50 can be increased by the folded portion, and the folded portion is bent downward, so that accumulation of sawdust is prevented. it can.

(Weeding guide)
In FIGS. 16 to 19, a weeding guide 74 is provided between the middle two stalk raising devices 8 in order to effectively raise the stalks in a field state where the cereals are entangled in a lying state. The principal part of the reaping device 4 is shown. The weed guide 74 shown in FIGS. 16 and 17 is a hollow or solid rod-shaped member having a circular cross section, and the lower end portion is connected to the front portion of the grain raising device 8 in the weed frame 73 or the weed body 7. The upper part is fixed to the upper part of the grain raising apparatus 8.
And the weed guide 74 heads upwards with an inclination which increases as the space | interval with the front surface of the grain raising apparatus 8 goes upwards from the lower end part connected with the weed frame 73 by the lower connection part 74b in side view ( The lower weed portion 74v) is bent at a position corresponding to the central portion in the height direction of the cereal haul raising device 8 (bending portion 74c), and is substantially the same as the inclined surface of the upper inclined surface 12u of the front raising case 12 described above. Inclined rearward at the same inclination angle (upper weed portion 74s), bent backward in the vicinity of the bending position 12c of the upper inclined surface 12u, and attached portion 74u which is the upper end portion of the weed guide 74 Is attached to the upper part of the grain raising apparatus 8. Note that the inclination angle of the upper weed portion 74s is substantially the same as that of the cover body 15 in the closed state in a side view.
In this way, the inclination angle of the upper weed portion 74s of the weed guide 74 is raised to be set to substantially the same angle as the upper inclined surface 12u of the case 12, and the upper weed portion 74s and the upper inclined surface 12u are continuously formed. By forming it with a gentle slope, there is no risk of catching at the point where the weed guide 74 and the front surface of the case 12 intersect, and the path of the cedar that stands by the raising action of the raising lug 14 is raised. Since it can be taken in smoothly, it is possible to suppress degranulation or cutting of the stem due to handling of the tip. Further, when the cover body 15 is in the open state, the tip of the culm that has been raised and crossed across the path is weeded by the weed guide 74, and the crossed tip is smoothly guided to the upper inclined surface 12u, It can pass between the pulling device 8 and the cover body 15 and be conveyed backward.
Moreover, what is shown in FIG.18 and FIG.19 is the cutting device 4 provided with the weed guide of a different form.
The weed guide 75 is described above in that it is extended further upward than the upper end of the grain raising device 8 and the intermediate part of the cover body 15 is rotatably supported by the extended upper end. It is different from the one.
That is, the weed guide 75 moves upward with an inclination that increases as the distance from the lower end connected to the weed frame 73 by the lower connecting portion 75b to the front surface of the grain raising device 8 increases in a side view ( The lower weed portion 75v) is bent at a position corresponding to the center portion in the height direction of the cereal habit raising device 8 (bending portion 75c), and substantially the same as the inclined surface of the upper inclined surface 12u of the front raising case 12 described above. Inclined rearward at the same inclination angle (upper weed portion 75s), reaches the rear side and the upper side of the grain raising device 8, and is covered with the cover body support portion 75se at the upper end portion of the upper weed portion 75s. The cover body support shaft 16 of the body 15 is rotatably supported. In addition, the attachment part 75u is provided in the site | part of the upper weed part 75s in the vicinity of the upper end part of the cereal habit raising device 8, and it is fixed to the cereal habit raising device 8 by this attachment part 75u.
Thus, by providing the upper weeding part 75 s of the weeding guide 75 to the upper part of the grain raising apparatus 8, the tip length is very long and the tip part is higher than the upper end part of the grain raising apparatus 8. In the cereal weeds, the cedar that is raised and crossed across the path can be reliably weeded to the left and right and transferred to the rear conveying device. If the cereals are transported to the threshing device 3 while being crossed, there is a risk that the threshing load will increase, the work efficiency will decrease, or the noise from the threshing device will increase, but by separating the entangled cereals This problem can be solved. Moreover, the rigidity of the cover body 15 is increased by adopting a form in which the cover body support portion 75se of the upper weed portion 75s supports the intermediate portion of the cover body 15, and the cereal rice cake that passes above the cereal wakening device 8 is increased. There is also an advantage that even if it interferes with the cover body 15, it is difficult to deform.

(Auxiliary pulling device)
In FIGS. 14 to 15, the reaping device 4 is provided with an auxiliary pulling device 60 at a position in front of the culm pulling device 8 in order to effectively lift the culm in a field state where the culm is entangled in a lying state. The main part is shown. The auxiliary pulling device 60 is a device that pulls up and rotates while dividing the left and right with respect to the cereals that are entangled in a lying state with the auxiliary pulling lug 62 protruding forward. An endless auxiliary pulling chain 66 wound around and driven by a drive sprocket 64B and a tensioning wheel 65, and an auxiliary pulling trigger attached to the auxiliary pulling chain 66 at a predetermined interval. And a lug 62.
The auxiliary pulling device 60 is connected to the grain raising device 8 at the upper and lower intermediate portions by the drive case 63, and the lower portion is connected to the weeding frame 73 and fixed.
The drive case 63 is provided with a transmission shaft that rotates integrally with a pulling drive shaft 70 that drives the grain raising device 8 (not shown), a bevel gear at the end of the transmission shaft on the side of the auxiliary pulling device 60, and the left-right direction of the body. Is engaged with the bevel gear 63B of the intermediate shaft 63A. An intermediate sprocket 63C is provided at the end of the intermediate shaft 63A opposite to the bevel gear 63B. The intermediate sprocket 63C faces the inner side of the bulging portion 61A that bulges to the side opposite to the drive case 63 in the auxiliary raising case 61. The driving force input to the intermediate shaft 63A is transferred to the divider drive shaft 64 having the drive sprocket 64B by the chain hung around the intermediate sprocket 63C and the driven sprocket 64A located above the auxiliary pulling device 60. introduce. Note that the tensioning wheel 65 at the lower part of the auxiliary pulling device 60 is urged downward so that the auxiliary pulling is always caused and tension is applied to the chain 66.
The moving speed of the auxiliary pulling chain 66 of the auxiliary pulling apparatus 60 is set higher than the moving speed of the pulling chain of the grain raising apparatus 8.
In this way, the auxiliary pulling device 60 has the auxiliary pulling chain 66 wound around the drive sprocket 64B arranged above the pulling drive shaft 70 of the grain pulling device 8 and above the upper end of the pulling device 8. The auxiliary pull-up lug 62 attached thereto also weeds while rising to the height of the drive sprocket 64B. Therefore, in the conventional auxiliary pulling device, the upper end portion of the working range of the auxiliary pulling lug was substantially the same height as the drive sprocket of the wheat straw pulling device, so that the herbicidal properties of the long wheat straw are low, When there is a problem that the processing efficiency of the threshing device is lowered while the tip is tangled, the weeding performance is improved by the above configuration, and it is difficult to weed cereals such as long-clad lodging However, it is possible to reliably weed, prevent clogging in the grain raising apparatus and the conveying apparatus, and improve the threshing efficiency.
Moreover, since the moving speed of the auxiliary pulling chain 66 of the auxiliary pulling device 60 is set to be higher than the moving speed of the pulling chain of the grain raising apparatus 8, it is possible to efficiently raise the fallen grain straw. it can.

7 Herbaceous body 8 Grain raising device 8c Intermediate raising device 12c Lower end (bending position)
12u Upper inclined surface 14 Raising lug 15 Cover body 15s Grain pass space 16 Cover body support shaft 50 Adjustment body 51 Support shaft 74 Weeding guide 74s Upper weeding part 75 Weeding guide 75s Upper weeding part

Claims (5)

In a reaping device comprising a weed body (7) for weeding planted cereals, and a culm raising device (8) in an upwardly inclined posture for raising the cereals weeded by the weed body (7),
An upper inclined surface (12u) is formed on the upper portion of the cereal pulling device (8), and the upper inclined surface (12u) is inclined to rise more slowly than the tilt angle of the cereal pulling device (8).
A weeding guide (74, 75) extending upward from the weeding body (7) is provided, and at the upper part of the weeding guide (74, 75), a lower end portion of the upper inclined surface (12u) ( 12c), an upper weed portion (74s, 75s) continuous with the upper inclined surface (12u) is formed. A cover body (15) that covers the upper part of the raising path (K) of the cereal raising apparatus (8) is provided above the cereal raising apparatus (8), and the cover body (15) The reaping device according to claim 1, wherein the reaping device is configured to be switchable between a closed state along the inclination of the surface (12u) and an open state in a posture rotated upward from the closed state. The cover body (15) is rotatably supported around the cover shaft (16) in the left-right direction on the upper part of the grain raising device (8) at both left and right ends,
The weed guide (74) is provided between two intermediate pulling devices (8c) arranged so that the non-raising working side where the pulling lug (14) does not protrude is opposed to each other,
When the cover body (15) is changed to an open state, the cereal passage space (15s) is formed between the upper end portion of the intermediate pulling device (8c) and the cover body (15). Item 2. The cutting device according to item 2. The cover body (15) is rotatably supported around the cover shaft (16) in the left-right direction on the upper part of the grain raising device (8) at both left and right ends,
The weed guide (74) is provided between two intermediate pulling devices (8c) arranged so that the non-raising working side where the pulling lug (14) does not protrude is opposed to each other,
The upper weeding part (75s) of the weeding guide (75) is extended upward from the upper end part of the central pulling device (8c), and the cover body support shaft (16 The reaping device according to claim 2, which is rotatably supported. The cutting device according to claim 2, 3 or 4, wherein an adjustment body (50) is provided at a front end portion of the cover body (15) so as to be rotatable about a support shaft (51) in the left-right direction.

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