JP5297412B2 - Grain feeder - Google Patents

Abstract

The utility model provides a driven rotation body and a combine harvester for overall small stalk conveying equipment, and the conveying chains of the stalk conveying equipment are hard to incline. In the stalk conveying equipment, a conveying chain (20a) is hanged on both the driven rotation body (23) and a driving chain wheel, and the driven rotation body (23) is driven to rotate by the rotation force from the driving chain wheel. A plurality of concave parts for accommodating pins (20b) of the conveying chains (20a) are formed on the periphery part (23A) of the driven rotation body (23), the concave parts being of circular arc shape in the cross section; the concave parts (24) are so formed that when the pins (20b) are accommodated in the concave parts (24), the centers (X) of the pins (20b) are positioned in the center of the driven rotation body (23), and on the outer lateral circle (L) of the periphery part (23A) introduced along the outsides of the concave parts (24) or on the outer side of the outer lateral circle (L).

Description

The present invention is related to culms conveying device harvester combine, and the like.

  Conventionally, as shown in Patent Document 1, in a cereal conveying apparatus such as a combine, there is one in which a conveying chain is wound around a drive sprocket and a driven rotating body. Usually, a drive sprocket and a follower rotating body used in a grain haul transport device have a plurality of deep recesses in which the entire pins of the transport chain are recessed in the outer peripheral portion. Therefore, the rotational force of the drive sprocket is reliably transmitted to the transport chain and the driven rotor, and the cereal is smoothly transported toward the feed chain.

  In this case, the same drive sprocket is often used as the driven rotator, and the outer peripheral portion of the driven rotator other than the recess is transported in a state where the pins of the transport chain are housed in the recess of the driven rotator. Located at the same position as the outermost part of the chain pin (on the same circle centered on the center of the driven rotator, the outer peripheral part of the driven rotator other than the recess and the outermost part of the transport chain pin Part is located).

JP 2001-238518 A

  In patent document 1, the deep recessed part into which the whole pin of a conveyance chain inserts in the outer peripheral part of a driven rotary body is formed, and the outer diameter of a driven rotary body tends to become large. However, in the pre-cutting processing unit of the combine, the space for the cereal conveying device is limited, and it may be difficult to arrange when the outer diameter of the driven rotor is large. In this case, it is conceivable to change the driven rotor to a roller-like rotor that does not have a recess in the outer peripheral portion, so that the entire diameter is reduced. However, the amount of the driven rotor that enters the transport chain decreases, and the transport chain Becomes easy to incline with respect to the driven rotor.

The present invention is intended to be whole while downsizing obtain grain稈搬OkuSo location where the conveyor chain hardly inclined.

The first characteristic feature of the grain稈搬OkuSo location according to the present invention includes a driving sprocket, conveyor chain with the drive sprocket is wound, and the slave moving rotator you rotated by the rotational force of the drive sprocket comprises is, only in the driven rotor of the prior SL driving sprocket and the driven rotary member, said concave pin cross section in which is accommodated a circular arc shape of the conveyor chain is a plurality formed in the outer peripheral portion, in the inner recess In the state in which the pin is housed, the concave portion is positioned so that the center of the pin is located on the outer circle passing through the outer peripheral portion other than the concave portion or on the outer side of the outer circle with the driven rotor center as the center. It is in the point that is formed.

[Action]
A pin of the transport chain is inserted into a recess formed in the outer peripheral portion of the driven rotating body, and the driven rotating body receives the rotational force of the transport chain from the transport chain and rotates. Here, in a state where the pin of the transport chain is housed in the recessed portion of the driven rotator, with the center of the driven rotator as the center, on the outer circle passing through the outer peripheral portion other than the recessed portion of the driven rotator or the outer circle Since the concave portion of the driven rotator is formed outward so that the center of the pin of the transport chain is located, more than half of the pins protrude from the outer peripheral portion of the driven rotator. In other words, the driven rotator has an outer diameter that is substantially the same as or smaller than the pitch circle that passes through the center of the pin of the transport chain that is recessed in the recess of the driven rotator, and is thus small overall.

  Since the pins of the transport chain are recessed in the recess of the driven rotor, the driven rotor enters the transport chain compared to the case where a roller-like rotor that does not have a recess on the outer periphery is used as the driven rotor. The amount gets bigger. When the amount of the driven rotator entering the transport chain increases as described above, the support region of the transport chain in the driven rotator increases, so that the transport chain does not easily tilt with respect to the driven rotator.

  In addition, the conveyance chain pin is recessed only about half at the maximum with respect to the recess of the driven rotating body. However, the conveying chain is moderately removed from the driven rotating body as compared with the case where a large-diameter roller or the like is externally fitted to the pin. In the case where an excessive load is generated on the transport chain due to clogging of the cereal, etc., the transport chain is easily detached from the driven rotating body.

[effect]
The driven rotating body is reduced in size as a whole, and the arrangement in the cereal conveying apparatus is facilitated. Moreover, since the conveyance chain is less likely to be inclined with respect to the driven rotating body, the cereals can be stably conveyed. Moreover, while making it difficult for the transport chain to come off moderately and ensuring reliable transmission, it is possible to easily remove the transport chain in the event of abnormalities such as clogging of the cereals and to avoid failure of the cereal transporting device.

The second characteristic feature of the grain稈搬OkuSo location according to the present invention, the curvature of the upstream side portion and downstream side portion of the driven rotor rotation direction of the recess lies in that is larger than the curvature of the bottom of the recess.

[Action]
The curvature of the upper side and lower side of the driven rotor rotating direction at the bottom of the recess is made larger than the curvature of the bottom of the recess, so that the pin of the transport chain that receives the rotation of the drive sprocket is the lower side of the recess. Is smoothly housed in the recess, and then is smoothly detached from the upper portion of the recess to the outside of the recess. Further, when the curvature of the upper side portion and the lower side portion of the concave portion becomes larger than the curvature of the bottom portion of the concave portion, the pins of the transport chain housed in the concave portion of the driven rotating body are connected to the upper portion and the lower portion of the concave portion. The contact area between the pin and the recess is small because the contact area is small even if it does not contact the part or even if it contacts.

[effect]
The pin of the transport chain can be stably transported with respect to the recessed portion of the driven rotating body so that the cereal can be stably transported. In addition, since the contact area between the pin and the concave portion of the transport chain is reduced, the driven rotating body is suppressed from wear damage by the pin, and the durability is improved.

It is a side view of a combine equipped with the present invention. It is a top view of a combine. It is a front view of a combine. It is a schematic plan view of a pre-cutting processing unit. It is a top view of a stockholder side conveyance device. It is VI-VI arrow sectional drawing of FIG. It is a figure which shows the state by which the conveyance chain was wound by the driven sprocket (driven rotary body). It is a figure which shows the structure of the chain guide plate of a stock-source side conveying apparatus, Comprising: (a) is a VIIIa-VIIIa arrow sectional drawing of FIG. 5, (b) is an exploded view. It is a figure which shows the structure of a tension roller, Comprising: It is IX-IX arrow sectional drawing of FIG. It is a figure which shows a handling depth adjustment apparatus. It is an enlarged view of a handling depth adjustment apparatus. It is XII-XII arrow sectional drawing of FIG. It is a top view of the drive mechanism of a reaping device. FIG. 14 is a cross-sectional view taken along arrow XIV-XIV in FIG. 13 and is a cross-sectional view of a crank portion. It is a figure which shows the state by which the conveyance chain was wound by the driven sprocket (driven rotary body) in another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a left side view showing the entire combine according to the embodiment of the present invention. FIG. 2 is a plan view showing the entire combine according to the embodiment of the present invention.

This combine harvests rice and wheat.
That is, the traveling machine body includes an engine (not shown) provided on the right side portion on the front end side of the body frame 2, and drives the pair of left and right traveling devices 1L and 1R by the output of the engine to self-run. The traveling machine body includes a boarding type driving unit 6 equipped with a driver's seat 6a provided above the engine, and is of a boarding type so as to board and drive the driving unit 6.

  The pre-processing unit frame 11 of the pre-cutting processing unit 10 is connected to the body frame 2 of the traveling machine body so as to be swingable up and down around an axis P that faces the traveling machine body at the left lateral side portion of the driving unit 6.

Reaper preprocessing unit 10 before by being swung processing unit frame 11 by the lifting cylinder 10 6, reaper three minute grass instrument 12L located alongside the traveling machine body transverse direction in the front end portion of the pre-processing unit 10 , 12C, 12R are moved up and down to a lowered working position where the grass cutters 12L, 12C, 12R are raised from the ground.

  When the pre-cutting processing unit 10 is lowered to the lowering work position and the traveling machine body is caused to travel, the pre-cutting processing unit 10 causes a planted culm and also cuts the chopped culm and starts the threshing feed chain 3a of the threshing device 3. Supply to the department. The threshing device 3 sandwiches the stock side of the harvested cereal meal by the threshing feed chain 3a and conveys it to the rear side of the traveling machine, thereby supplying the tip side of the harvested grain meal to the handling room (not shown). To process. The rear portion of the threshing device 3 is connected to a waste straw processing device 4 for processing the waste straw that is the cereal mash after the threshing treatment. The threshing grain bag packing unit 5 collects and stores the threshing grains that have been subjected to the sorting process as having been made into a single grain state by the sorting unit (not shown) of the threshing device 3 and then stores them in the grain tank. throw into.

The pre-cutting processing unit 10 will be described in detail.
As shown in FIGS. 1 and 2, the pre-processing unit frame 11 of the pre-cutting processing unit 10 includes a main frame 11 a that is also used as a transmission case supported by the machine body frame 2 so as to be swingable up and down. The three weeding tool support rods 11b extending forward from the front end of the traveling machine body are provided. The three weeding tool support rods 11b are arranged at a predetermined interval in the lateral direction of the traveling machine body, and a pair of adjacent weeding tool support rods 11b and 11b form one pulling path 13 as a whole. Two pull-up paths 13 and 13 are formed.

  FIG. 3 is a front view of the combine, and FIG. 4 is a plan view showing the pre-cutting processing unit 10. As shown in FIGS. 1 to 4, the pre-cutting processing unit 10 includes the three weeding tools 12L, 12C, and 12R, and the raising that is provided in each raising path 13 behind the weeding tools 12L, 12C, and 12R. A pair of left and right scraping wheels 16a, 16b and a pair of left and right scrapers provided above the harvesting device 15 with a clipper-type trimming device 15 provided behind the lower end side of the pulling device 14. Provided with endless belts 17a, 17b, and provided with a cereal conveying device 18 having a conveying start end positioned above the pair of left and right scraped ring bodies 16a, 16b, to raise up to four planted culm The cutting process and the supply of the harvested cereal to the threshing device 3 are performed.

  Among the three weeding tools 12L, 12C, 12R, the distance between the tips of the middle weeding tool 12C located at the center and the outer weeding tool 12R located on the driving unit 6 side, and the three weeding tools 12L, 12C and 12R, the distance between the tips of the outer weeding tool 12L and the middle weeding tool 12C, which are located on the opposite side of the driving unit 6 side, is set to an interval at which two rows of planted cereal can be introduced. It is set.

  Each pulling device 14 has a tilting case 14a that is positioned slightly rearward on the upper end side, and a plurality of pulls that protrude from the pulling case 14a to the side and are raised and transferred along the case 14a. A claw 14b is provided, and the planted cereal rice cake introduced into the corresponding erecting path 13 is raised and lifted by the claw 14b to be raised and processed.

  The scraping endless belt 17a on the left side and the scraping ring body 16a on the left side act on the scraping arm 17c or the scraping claw 16c on the planting side of the planted cereal that has been raised and processed by the pulling device 14 on the left side. Then, the stocker side of the planted cereal grains on which the pulling device 14 on the left side is acting is scraped while being laterally fed toward the meshing point Z of the pair of left and right scraping wheels 16a, 16b. The right scraping endless belt 17b and the right scraping ring body 16b act on the scraping arm 17c or the scraping claw 16c on the planting side of the planted cereal that is raised and processed by the right pulling device 14. Then, the stocker side of the planted cereal rice cake on which the right pulling device 14 is acting is scraped while being laterally fed toward the meshing point Z of the pair of left and right scraping wheels 16a, 16b.

  Thereby, the reaping device 15 reaws the planted cereals that are caused and processed by the left and right pulling devices 14 on the stock side.

  The pair of left and right scraping endless belts 17a and 17b and the pair of left and right scraping wheels 16a and 16b continue to push the scraping arm 17c or the scraping claw 16c toward the stock side of the harvested cereal that has been trimmed by the harvesting device 15. The stocker side of the harvested cereal mash is fed to the rear of the reaping device 15 and supplied to the transport start end of the cereal transporter 18. The pair of left and right scraping endless belts 17a and 17b act on the planted culm and the harvested culm at a position where the arrangement height is lower than the arrangement height of the uppermost end portion in the rear part of the left and right weeding tools 12L and 12R.

The grain culm transporting device 18 includes a tip side transporting device 19 that locks and transports the head side of the harvested cereal cocoon and a stock source side transporting device 20 that sandwiches and transports the stock side of the harvested cereal cocoon. The harvested cereal meal is conveyed laterally outward and rearward of the pre-harvest processing unit 10 and supplied to the conveyance start end of the threshing feed chain 3a of the threshing device 3. In the tip side transport device 19, the tip side of the harvested cereal basket is latched and conveyed by the locking arm 19 a, and the stock source side transport device 20 holds the stock side of the harvested cereal rice cake by the transport chain 20 a that is an endless rotating chain. Transport.

Hereinafter, the stock source side conveyance device 20 will be described in detail.
As shown in FIG. 5, the stock transportation device 20 includes a drive sprocket 21 closer to the rear of the machine, a driven sprocket 22 closer to the front of the machine, and a driven sprocket 23 closer to the rear outer side of the drive sprocket 21 (corresponding to a driven rotor). ), The conveyor chain 20a is wound around, and the drive sprocket 21 is driven to rotate in the direction of the arrow in FIG. As shown in FIGS. 5 and 6, the driven sprocket 23 is rotatably supported by a support shaft 23a fixed to the support member 23b, and is bolted to the support frame 25 together with the support member 23b having a Z-shaped longitudinal section. It is detachably fixed at A and is configured to be exchangeable. Therefore, even if the driven sprocket 23 is worn and damaged by long-term use or the like, it can be easily replaced.
A tip part of the support member 23b is inclined obliquely downward and is formed with a triangle-like detachment prevention part 23bA in a plan view to prevent the conveyance chain 20a from coming off.

  An inverted U-shaped ridge 26 is disposed in the middle part in the longitudinal direction of the grain culm transporting device 18. One end of the inverted U-shaped flange 26 is fixed to a support frame 26b that elastically supports a guide rod 27 facing the transport chain 20a, and the other end is fixed to the support frame 25. Slide rods 29 are attached to the front and rear of the guide rod 27, and the guide rod 27 and the slide rod 29 are urged against the support frame 26b so as to be pressed against the transport chain 20a via a spring 29a.

  As shown in FIG. 7, the driven sprocket 23 is formed with a plurality of concave portions 24 each having an arcuate cross section in which the pin 20b of the transport chain 20a is recessed in the outer peripheral portion 23A. In a state where the pin 20b is housed in the recess 24, the pin of the transport chain 20a is placed on the outer circle L passing through the outer peripheral portion other than the recess 24 around the center of the driven sprocket 23 (center of the support shaft 23a). A recessed portion 24 of the driven sprocket 23 is formed so that the center X of 20b is located.

  The pin 20b of the transport chain 20a is recessed in the recess 24 formed in the outer peripheral portion 23A of the driven sprocket 23, and the driven sprocket 23 receives the rotational force of the drive sprocket 21 from the transport chain 20a and rotates. At this time, since the concave portion 24 is formed on the outer circle L passing through the portion of the outer peripheral portion 23A other than the concave portion 24 of the driven sprocket 23 so that the center X of the pin 20b is located, the outer peripheral portion 23A of the driven sprocket 23 On the other hand, approximately half of the pin 20b protrudes outward. That is, the driven sprocket 23 has an outer diameter that is substantially the same as the diameter of the pitch circle M that passes through the center of the pin 20b of the transport chain 20a that is recessed into the recess 24, and is thus small overall.

  When the pin 20b of the transport chain 20a is recessed in the recessed portion 24 of the driven sprocket 23, the driven sprocket 23 is compared to the case where a roller-shaped rotating body that does not include the recessed portion 24 is used as the driven rotating body. The amount of entry E into the transport chain 20a increases. When the penetration amount E increases in this way, the support region of the transport chain 20a in the driven sprocket 23 increases, so that the transport chain 20a is difficult to tilt.

  Further, the pin 20b of the transport chain 20a is recessed only up to about a half with respect to the recess 24 of the driven sprocket 23, but it is transported from the driven sprocket 23 as compared with a case where a large diameter roller or the like is externally fitted to the pin 20b. If the chain 20a is not easily detached and an excessive load is generated on the conveying chain 20a due to clogging of the cereal, etc., the conveying chain 20a is easily detached from the driven sprocket 23.

The curvature of the upper side portion 24B and the lower side portion 24C in the rotational direction of the driven sprocket 23 in the concave portion 24 of the driven sprocket 23 is configured to be larger than the curvature of the bottom portion 24A of the concave portion 24. Therefore, the pin 20b of the transport chain 20a receives the rotational force of the drive sprocket 21 and is smoothly accommodated in the recess 24 from the lower side portion 24C of the recess 24, and then from the upper side portion 24B of the recess 24 to the outside of the recess 24. Leave smoothly. Further, in a state where the pin 20b is housed in the recess 24, the pin 20b contacts only the bottom 24A and does not contact the upper side portion 24B and the lower side portion 24C, or the contact area is small even if they contact. Therefore, the contact area between the pin 20b and the recess 24 is reduced, and the driven sprocket 23 is prevented from being damaged by the pin 20b.

  As shown in FIGS. 5, 8 (a), and 8 (b), the stock transporter 20 includes a rear side of the driven sprocket 22 around which the transport chain 20 a is wound, and a front side of the driven sprocket 23. A guide plate 28 of the transport chain 20a is disposed. The guide plate 28 is formed in a shape in which a front end portion is bent inward, and a rear end portion is formed in a shape curved inward, and from the lateral outer side with respect to the guide plate support member 25b fixed to the support frame 25. It is detachably fixed with a countersunk screw B. Therefore, the guide plate 28 and the like can be easily replaced when the transport plate 20a continues to rub against the guide plate 28 due to long-term use and the guide plate 28 is worn.

  As shown in FIGS. 5 and 9, the tension of the transport chain 20a of the stock-source-side transport device 20 is adjusted by a tension roller 30b. The tension arm 30 constituting the tension adjusting mechanism supports a tension roller 30b on a shaft 30a provided at one end and swings on a member 26a attached to the inverted U-shaped rod 26 via a shaft 30c provided at the other end. It is supported freely. The tension adjusting mechanism further includes a tension spring 31 and a position changing portion 32 of the tension arm 30 provided across the intermediate portion of the tension arm 30 and the support arm 25a of the support frame 25.

The position changing portion 32 includes an end portion of the tension spring 31 and a screw portion 32a installed on the tension arm 30 , and a screw position holding portion 32b fixed to the tension arm 30 and holding the position of the screw portion 32a. By changing the position of the screw part 32a with respect to the screw position holding part 32b, the position of the tension roller 30b is moved toward or away from the transport chain 20a to adjust the tension applied to the transport chain 20a. To do. In this way, tension is applied to the transport chain 20a without inclination by the tension roller 30b, so that the transport chain 20a can be made difficult to come off from the sprockets 21, 22, and 23.

Next, the handling depth adjusting device 40 will be described.
As shown in FIG. 10, the cereal conveyance device 18 including the tip side conveyance device 19 and the stock source side conveyance device 20 is connected to the shaft core P so as to be swingable up and down. Use to swing up and down.

  As shown in FIG. 11, in the handling depth adjusting device 40, a motor 42 with a worm reduction gear and an arcuate gear 43 are attached to a support arm 11c that supports the raising device 14 via a base member 41. The arcuate gear 43 is engaged with the output shaft pinion 44, and the arcuate gear 43 swings up and down around the lateral axis Y. In addition, the handling depth adjusting device 40 is provided with a driving arm 45 that swings integrally with the arcuate gear 43 around the lateral axis Y, and this driving arm 45 conveys the cereals via the connecting rod 46. Connected to the device 18. Note that a tension spring 47 is disposed across the drive arm 45 and the support arm 11c, and urges the grain feeder 18 upward.

  Further, as shown in FIGS. 11 and 12, the gear pressing plate 48 is disposed in a substantially vertical direction (vertical direction) with respect to the arcuate gear 43. Both ends of the gear presser plate 48 are fixed to the base member 41 and the support arm 11c, and a portion facing the arcuate gear 43 is formed in a concave shape. The gear presser plate 48 maintains the occlusal state between the arcuate gear 43 and the motor output shaft pinion 44 even when receiving vibrations of the airframe. Further, since the gear presser plate 48 is disposed vertically with respect to the base member 41, the deformation of the base member 41 is suppressed by the gear presser plate 48, and the strength of the base member 41 is improved.

  As shown in FIG. 1, the waste straw which is the cereal mash after the threshing process carried out from the threshing device 3 is conveyed backward by the waste straw conveying device 4a provided in the upper part thereof. Although illustration is omitted, the waste straw processing apparatus 4 has a long straw discharge state in which the waste straw is discharged out of the vehicle in a long state, and a shredder that is cut out by a disk cutter provided inside and then discharged outside the vehicle. It can be switched to the discharge state.

As shown in FIG. 13, the clipper-type mowing device 15 is reciprocally driven left and right by a crank mechanism 50. The crank mechanism 50 includes a drive shaft 51 supported by a horizontal frame 11d laid across the left and right weeding tool support rods 11b and 11b, and a fly that is attached to the drive shaft 51 and rotates by the rotation of the drive shaft 51. The wheel 52, the crank yoke 53 attached to the flywheel 52, the crank rod 54 connected to the crank yoke 53, and the crank arm 55 connected to the crank rod 54. The crank rod 54 and the crank arm 55 are connected via a crank shaft 56, and the crank shaft 56 is provided at the rear portion of the crank arm 55. The crank arm 55 has a rod-shaped front portion and a fan-shaped rear portion, and an intermediate portion in the front-rear direction is supported by the horizontal frame 11d by a rotating shaft 57, and a cutting blade head 15a of the cutting device 15 is disposed at the front end. Is connected. Using the crank mechanism 50 configured as described above, the rotational motion of the drive shaft 51 is transmitted to the crank rod 54 via the flywheel 52 and the crank yoke, and the operation of the crank rod 54 is performed by the crank shaft 56 and the rotation shaft 57. It converts into the reciprocating motion of the crank arm 55, and the cutting blade 15b of the cutting device 15 is reciprocated to the left and right.

  As shown in FIG. 14, the boss portion of the crank rod 54 is fitted on the upper portion of the crankshaft 56 via a ball bearing 56a, the lower portion is connected to the boss portion of the crank arm 55, and the upper surface is covered. 56b. A ring portion 54a extends to the lower portion of the ball bearing 56a below the boss portion of the crank rod 54 that externally fits the crankshaft 56, and a rubber seal member 56c, for example, is disposed inside the ring portion 54a. Has been. The crankshaft 56 is pivotally supported in a state of projecting downward from the position of the boss portion of the crank arm 55 to which the lower portion is coupled. A step portion 55 a is formed on the outer periphery of the boss portion of the crank arm 55, and the lower portion of the ring portion 54 a of the boss portion of the crank rod 54 is formed on the step portion 55 a of the boss portion of the crank arm 55. In a state of entering, the boss portion of the crank arm 55 and the boss portion of the crank rod 54 are brought close to each other in the vertical direction of the crankshaft 56. As a result, the amount of water entering the crankshaft 56 is reduced, and there is a synergistic effect between the ring portion 54a and the seal member 56c, so that water can be prevented from entering the crankshaft 56.

[Another embodiment]
(1) As shown in FIG. 15, the driven sprocket 23 (corresponding to a driven rotor) has a recess 24 centered on the center of the driven sprocket 23 in a state where the pin 20 b of the transport chain 20 a is housed in the recess 24. The recess 24 may be formed so that the center X of the pin 20b is located outside the outer circle L that passes through the portion of the outer peripheral portion 23A.

  Since the recess 24 is formed so that the center X of the pin 20b is located outside the outer circle L that passes through the outer peripheral portion 23A other than the recess 24, the pin 20b with respect to the outer periphery 23A of the driven sprocket 23 is formed. It will protrude outwards over half of it. In other words, the driven sprocket 23 has a smaller outer diameter than the pitch circle M through which the center of the pin 20b of the transport chain 20a that is recessed into the recess 24 passes, and is more than the above embodiment (the driven sprocket 23 shown in FIG. 7). It becomes small.

  Further, since the recess 24 is formed shallower than in the above embodiment, the amount E of the driven sprocket 23 entering the transport chain 20a is reduced, but the transport chain 20a is excessive due to clogging of the cereal. When a load occurs, the transport chain 20a is easily detached from the driven sprocket 23.

(2) In the above embodiment, only the driven sprocket 23 located obliquely behind the drive sprocket 21 among the driven sprockets 22 and 23 in the stock-side transfer device 20 of the grain haul transfer device 18 is configured according to the present invention. Although adopted, the configuration according to the present invention may be adopted for the driven sprocket 22 positioned in front of the drive sprocket 21 instead of the driven sprocket 23, and the configuration according to the present invention is adopted for both the driven sprockets 22 and 23. May be.

(3) In the above embodiment, the driven sprockets 22 and 23 in the stock source side transport device 20 of the cereal transport device 18 for transport to the combine threshing device 3 have been described, but the cereal transport device according to the present invention. The driven rotating body for use in this case is a horizontal or vertical auxiliary conveying device provided between the conveying terminal portion of the cereal conveying device 18 and the conveying starting end portion of the threshing feed chain 3a, and the waste after the threshing of the combine. The same applies to the straw transport device 4a.

(4) Moreover, the driven rotary body for the grain feeder according to the present invention is not limited to a combine, and may be used for a driven sprocket for a grain feeder of a reaper.

  The corn straw transporting apparatus according to the present invention can be widely used not only for a combine but also for a harvester equipped with a corn straw transporting apparatus.

DESCRIPTION OF SYMBOLS 10 Pre-harvest processing part 18 Grain conveying device 19 Ear tip side conveying device 20 Stock source side conveying device 20a Conveying chain 20b Pin 21 Drive sprocket 23 Driven sprocket (driven rotor)
23A Outer peripheral portion 24 Recessed portion 24A Bottom portion 24B Upper side portion 24C Lower side portion L Outer circle M Pitch circle X Center of pin

Claims (2)

A drive sprocket,
Conveyor chain with the drive sprocket is wound, and the slave moving rotator you rotated by the rotational force of the drive sprocket is provided,
In only the driven rotor of the prior SL driving sprocket and the driven rotating body, the cross-section in which the pin of the conveyor chain are accommodated forming a plurality arcuate recesses on its outer peripheral portion, the pin into the inner recess The recess is formed so that the center of the pin is located on the outer circle passing through the outer peripheral portion other than the recess, or on the outer side of the outer circle, with the center of the driven rotor as the center. grain稈搬OkuSo location you have. Grain稈搬OkuSo location of the driven rotor curvature of the upstream side portion and downstream side portion of the rotational direction, according to claim 1 is larger than the curvature of the bottom of the recess in the recess.

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