JP2013027350A - Reaping device for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate smooth raking and conveying of grain culm by enlarging active range of raking and conveying for grain culm in grain culm raising.SOLUTION: The reaping device includes a rotary driven raking and conveying star wheel (43) on the staring point of a raking belt (36) with a raking lug (37) raking and conveying grain and culm introduced within raising active range of right and left raising devices (15L, 15R) toward a rearward cutting device (16) side. The raking and conveying star wheel (43) is coaxially pivoted with a raking pulley (41) on the underside of the raking pulley (41) winding starting end side of the raking belt (36). The raking pulley (41) winding end point side of the raking belt (36) and the conveying star wheel (43) are integrally formed.

Description

  The present invention relates to a combine harvester.

  Conventionally, in a plan view, a scraping and transporting mechanism comprising a scraping belt that latches the stock of the cereal rice cake when it is raised from the back of the left and right pulling device and scrapes and transports it toward the center of the rear cutting blade. There is one arranged in a left and right C-shape (see, for example, Patent Document 1).

JP 2010-104346 A

  In the prior art, it is not possible to obtain a sufficient scraping guide area by the scraping belt corresponding to the scraping guide area of the pulling device.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is a scraping mechanism for scraping and conveying the cereals introduced into the raising action area of the left and right raising devices (15L, 15R) toward the rear cutting blade device (16). A combine reaping device is provided in which a scraping star wheel (43) that is driven to rotate is provided at the start end of a scraping belt (36) with a lug (37).

  The invention according to claim 2 is characterized in that the feeding star wheel (43) is disposed below the scraping pulley (41) wound around the starting end side of the scraping belt (36). The combine harvester according to claim 1, which is coaxially mounted.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the take-up pulley (41) and the feed star wheel (43) wound around the start end side of the take-up belt (36) are integrally molded. Combine harvester.

  According to a fourth aspect of the present invention, the left and right pulling devices (15L, 15R) are configured to cause the cereals chopped by the left and right weeding tools (14L, 14R) to move upward from below in a laterally projecting posture. The pulling path (Y2) caused by the pulling lug (29) and the pulling lug (29) in the downward projecting posture at the lower part of the pulling device (15L, 15R) are arranged on the lower end side of the pulling path (Y2). A scraping path (Y1) that moves toward the left and right direction and scrapes the stock of cereals is formed, and the scraping star wheel (43) is a pulling device (to form the scraping path (Y1)). The combine according to any one of claims 1 to 3, wherein the combiner is disposed behind the outer guide roller (28b) among the plurality of guide rollers (28a, 28b) disposed at a lower portion of 15L, 15R). This is a cutting device.

  The invention as set forth in claim 5 is a stir-up star wheel (34) that scoops and conveys cereals after cutting the rear part of the feed star wheel (43) wound around the start end side of the stir-up belt (36). The combine harvester according to any one of claims 1 to 4, wherein the combine harvester is vertically overlapped with a front portion of the combine.

  According to the first aspect of the invention, by providing the feeding star wheel (43) at the starting end of the taking-in belt (36), the feeding action range with respect to the cereal mash at the time of pulling can be increased, and the taking-in conveyance can be performed. Can be done properly.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the strainer side of the cereal is forcibly fed by the scraping star wheel (43), and the tip of the upper tip side is scratched. Since the feeding belt (36) is used for picking up and transporting, there is no movement of the cereals as in the case of providing the feeding star wheel (43) above the picking up belt (36), and the picking up and feeding is carried out in a stable posture in an orderly manner. be able to.

  According to invention of Claim 3, in addition to the effect by the invention of Claim 1 or Claim 2, the number of parts can be increased by integrally forming the scraping pulley (41) and the scraping star wheel (43). Can be reduced and can be realized at low cost.

  According to invention of Claim 4, in addition to the effect by the invention as described in any one of Claims 1 to 3, the scraping star wheel (43) is provided with a raising device (15L, 15R). Acts from the outside to the inside of the scraping path (Y1), and the stock of the cereal that is raised and scraped by the lug (29) is caught early and forced along the scraping path (Y1) After that, it can be scraped and conveyed backward.

  According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the rear portion of the feeding star wheel (43) and the stirring star wheel (34) Since the front part overlaps up and down, the transfer from the feeding star wheel (43) to the taking-in star wheel (34) can be carried out smoothly and satisfactorily.

Combine side view Top view of the combine Combine front view Front view of the main part of the mowing unit Side sectional view of the main part of the cutting part Top view of the main part of the take-up transport device Exploded perspective view of the take-up belt transport mechanism Front view of the main part of the mowing unit Top view of the main part Front view of the main part of the mowing unit Top view of the main part Top view of the main part Plan view of the main part of the cutting part

An embodiment of the invention will be described with reference to the drawings.
FIGS. 1 to 3 show an overall view of a combine. This traveling vehicle body 1 is provided with a pair of left and right traveling crawlers 2L and 2R driven via a traveling mission, and a threshing device ( A reaping device (reaping part) 4 is installed in front of the threshing part 3, and the side part of the reaping part 4 has a driver seat 5, a front operation box 6 in front of the driver seat, and a driver seat left side A driving operation unit including the side operation box 7 is provided, and a Glen tank G for temporarily storing threshing grains is provided behind the driving operation unit.

  On the right side of the front operation box 6, there is installed a power steering lever 8 that controls the advancing direction of the machine body in the left-right direction and controls the lifting device 4 in the up-down direction. On the side operation box 7 on the left side of the driver's seat 5, a cutting / clutching lever 9 that intermittently operates rotational power to the cutting unit 4 and the threshing unit 3 and a continuously variable transmission (not shown) are shifted to change the traveling speed. A transmission lever (HST lever) 10, a sub transmission lever 11, and the like are arranged.

  The cutting part 4 is supported by a rear support frame 31, and a rear end part (rear end part) of the rear support frame 31 is pivotally supported by a support part (not shown) provided in the traveling vehicle body 1. Then, the cutting unit 4 is moved up and down by hydraulic expansion and contraction of the cutting lifting cylinder S provided between the intermediate portion of the rear support frame 31 and the traveling vehicle body 1.

  The front and rear end portions (front end portions) of the rear support frame 31 are connected to the left and right intermediate portions of the horizontal support frame 32 in the left-right direction, and the weed support frame 21 is directed from the horizontal support frame 32 toward the front of the combine body. A plurality of them are arranged at predetermined intervals on the left and right.

  The mowing unit 4 includes left and right weeding tools 14L, 14R and a central middle weeding tool 14C for weeding the raised cereals to the left and right, and a pair of left and right cereal raising devices for raising the cereals after weeding. 15L, 15R (15), a clipper-type cutting blade device 16 that cuts the cedar after raising, and a scraping bell that squeezes and conveys the cereal introduced into the raising area from the front of the cutting blade to the rear It is equipped with a scraping and transporting device 17 such as a star wheel, a lifting transporting device 18 and the like that feeds the cereal mash after being transported to the threshing unit.

Each weeding tool 14 is attached to the tip of the weeding support frame 21.
The right and left weeding tools 14L and 14R pivot about a vertical axis 22 in the vertical direction provided in the middle part of the weeding support frame 21 so that the tip side turns toward the left inner side or the right outer side. I wear it.

  When performing a normal two-row cutting operation, the left and right weeding tools 14L and 14R are in a closed state, and one grain per grain between the left and right weeding tools 14L and 14R and the middle weeding tool 14C. Is introduced, and the cereals for two ridges are guided to the cutting blade side in total.

  Among the left and right weeding tools 14L and 14R, in the state where the left weeding tool 14L is opened outward (open state), two cereal grains are introduced between the middle weeding tool 14C and the left weeding tool 14L. In addition, three corn straws are introduced together with the one corn straw introduced between the middle weed tool 14C and the right weed tool 14R, and the three-row cutting operation becomes possible.

  Further, of the left and right weeding tools 14L and 14R, the state in which the right weeding tool 14R is opened outward (open state) is between the middle weeding tool 14C and the right weeding tool 14R. Is introduced, and three cereals are introduced together with the one cereal that is introduced between the middle weed 14C and the closed left weed 14L. Can be done.

  When the left and right weeding tools 14L and 14R are opened outward, two strips are provided between the left weeding tool 14L and the middle weeding tool 14C, and between the right weeding tool 14R and the middle weeding tool 14C. Cereals are introduced, and left and right cereals are introduced for 4 knives so that 4-row mowing work can be performed.

  The left and right weeding tools 14L and 14R and the operation levers 13L and 13R for remotely operating them are interlocked and connected via operation wires or the like, and the operation operation of the operation levers 13L and 13R to the front side (front to rear) is performed. Accordingly, the left weeding tool 14L is operated to rotate leftward and the right weeding tool 14R is rotated to the right outer side.

  As shown in FIG. 4, the left and right grain raising devices 15L and 15R are provided in a raising case 25 configured in a bilaterally symmetric shape, a drive sprocket 26, a tension sprocket 27, and a lower portion in the case. It consists of left and right guide rollers 28a and 28b installed at predetermined intervals on the left and right sides, and an endless chain 30 with a pulling lug 29 wound around them. On the start end side of the left and right pulling devices 15L and 15R, a scraping path Y1 having a predetermined width in the lateral direction is provided to scrape the cereal introduced by the pulling lug 29 from the outside toward the inner pulling path Y2 side. Yes. The scraping path Y1 is configured between the left and right guide rollers 28a and 28b arranged at a predetermined interval, and the pitch between the left and right guide rollers 28a and 28b is set to the lag pitch between the raising lugs 29 and 29. By setting substantially the same, a plurality of pull-up lugs 29 and 29 are laterally moved in a downward acting posture in the scraping path Y1. In the raising path Y2, the raising lug 29 moves upward in a horizontal posture.

  That is, while the pulling lug 29 is moving in the vicinity of the end position of the scraping path Y1, or while moving while drawing an arc trajectory in the process of being pulled from the scraping path Y1 and moving to the path Y2, the grain lug 29 Even if it is disengaged from the state where it is engaged, it is possible to catch the cereals by the presence of another raising lug 29 in the scraping path Y1, and to prevent the cereals from being overlooked by the raising devices 15L, 15R. it can.

Therefore, according to the scraping route Y1 having the above-described configuration, even if two cereal grains are introduced on one side, the scraping route Y1 can be raised and reliably scraped into the route Y2.
The scraping and transporting device 17 is composed of a pair of left and right scraping star wheels 34 and 34 and a scraping belt 36 that are disposed opposite to each other on the cutting blade. The scraping belt 36 is raised and introduced into the region. Is locked and held by an elastically displaceable scraping lug 37 projecting at predetermined intervals, and is scraped and conveyed toward the rear cutting blade 16 side and further to the rear side. 35 is wound over a drive pulley 40 mounted on 35 and a drive pulley 41 mounted on a front end portion of a drive case 39 by a pulley shaft 42, and is disposed on the back of the left and right pulling devices 15L and 15R. Yes.

  On the start end side of the left and right scraping belts 36, 36, the strainer of cereals introduced into the scraping action area of the left and right pulling devices 15L, 15R is locked and scraped from the outside to the inside. A feed star wheel 43 is pivotally supported so as to be capable of forced rotation.

  The feeding star wheel 43 is installed coaxially with the pulley shaft 42 on the lower side of the take-up pulley 41, and the feed star wheel 43 and the take-up pulley 41 are integrally formed.

  The scraping star wheel 43 is disposed behind the outer guide roller 28b of the pulling path Y1 of the pulling device, and is moved as close as possible to the pulling lug 29 that moves along the scraping path Y1. Can be done well. If the arrangement is made so that the front end of the feeding star wheel 43 and the front end of the take-up belt 36 are in substantially the same position in a side view, the rice straw in an upright position or a forward tilted position can be securely locked and held by both. Can be scraped and conveyed.

  The feeding star wheel 43 at the starting end of the taking-in belt 36 and the taking-in star wheel 39 that takes in and transports the harvested culm are arranged so that the rear part and the front part overlap vertically. It is configured so that the transfer from the feeding star wheel to the stir-up star wheel can be carried out satisfactorily.

As shown in FIGS. 8 and 9, the non-working side outer peripheral portion of the scraping star wheel 43 is covered with the side cover 44, whereby the wrapping of the cereal can be prevented.
Further, as shown in FIG. 9, the left and right guide members 45 </ b> L and 45 </ b> R can prevent entrainment of wrinkles by making the shape along the locus of the root circle of the scraping star wheel 43 and the scraping star wheel 34. In addition, the conveyance force can be improved.

  In addition, by making the rotation speed of the scraping star wheel 43 faster than that of the stirring star wheel 34, it is possible to speed up the intake of the cereal at the time of scraping. The rotation speed of the scraping star wheel 43 is preferably about halfway between the scraping star wheel speed and the lug speed.

  The embodiment shown in FIGS. 10 to 12 has twin cutting blades 16L and 16R in which the cutting blade 16 is divided from the center in the case where the feeding star wheel 43 is provided at the start end of the driving belt 36, and the central side is the left and right end sides. The configuration is arranged in a V shape so as to be in the rear position. According to this, since it cut | disconnects ahead from a center side in the right-and-left end side of a cutting blade, the stock length after cutting | disconnection can be arrange | equalized.

  The central recess 46 of the V-shaped twin cutting blade is arranged and configured so as to coincide with the meshing line of the pair of left and right scraping star wheels 34, 34. The driving of the cutting blade is interlocked so that power is taken out from the cutting blade gear transmission case of the lateral support frame 32 and the cutting blade is reciprocated via the bevel gear mechanism 47 and the crank mechanism 48.

  By setting the setting angle α of the V-type twin cutting blade and the working line setting angle (or the tangential setting angle of the feeding star wheel and the stirring star wheel) β of the scraping belt to substantially the same angle, cutting the stock The length can be made uniform.

  The V-shaped twin cutting blades 16L and 16R in the example of FIG. 13 can be improved in cutting performance by arranging the blade edges so as to face the traveling direction.

14L Left weed tool 14R Right weed tool 14C Middle weed tool 15 Grain raising device 16 Cutting blade device 28 Guide roller 29 Raising lug 34 Scratching star wheel 36 Scratching belt 37 Scratching lug 41 Staking pulley 43 Scraping Star Foil Y1 Grain Flour Scavenging Path Y2 Grain Straw Raising Path

Claims (5)

  Scratch belt with a scooping lug (37) that transports the cereals introduced into the pulling action area of the left and right pulling device (15L, 15R) toward the rear cutting blade device (16) ( 36) A combine mowing device provided with a scraping star wheel (43) that is driven and rotated at the start end of 36).   The scraping star wheel (43) is pivotally mounted coaxially with the scraping pulley (41) below the scraping pulley (41) wound around the starting end side of the scraping belt (36). The combine harvester as described.   The harvesting device for a combine according to claim 1 or 2, wherein a scraping pulley (41) wound around a starting end side of the scraping belt (36) and a feeding star wheel (43) are integrally formed.   In the left and right pulling devices (15L, 15R), the cereals that have been weeded by the left and right weeding tools (14L, 14R) are raised by the pulling lugs (29) that move from the lower side to the upper side in a laterally projecting posture. A pulling lug (29) in a downward projecting posture at the lower portion of the pulling path (Y2) and the pulling device (15L, 15R) moves in the left-right direction toward the lower end side of the pulling path (Y2). A scraping path (Y1) for scraping the cereal stocks is formed, and the scraping star wheel (43) is arranged below the pulling device (15L, 15R) to form the scraping path (Y1). The combine harvester according to any one of claims 1 to 3, wherein the combine harvester is disposed behind an outer guide roller (28b) among the plurality of guide rollers (28a, 28b).   The rear part of the feeding star wheel (43) wound around the starting end side of the scraping belt (36) is moved up and down with respect to the front part of the stirring star wheel (34) for scraping and transporting the culm after cutting. The combine harvester according to any one of claims 1 to 4, wherein the combine harvester is overlapped.

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