JP2010263852A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester that carries out an operation in a middle division reaping state of four row crops and a simple structure and performs an operation in a round reaping state in an excellent finish condition. <P>SOLUTION: An interval W1 between both ends of a middle separation device 12C and an outer separation device 12R of an operation unit side and an interval W2 between both ends of an outer separation device 12L on the opposite side of the operation unit side and the middle separation device 12C are set so as to introduce two-row planted grain culms. A raking wheel 16b for raking the stock base side of planted grain culms from the middle separation device 12C and the outer separation device 12R of the operation unit side to a reaping device 15 and a raking wheel 16a for raking the stock base side of planted grain culms from the middle separation device 12C and the outer separation device 12L at the opposite side of the operation unit side to the reaping device 15 are engaged and linked. A part Z in which a pair of the raking wheels 16a and 16b are engaged is biased to the opposite side of the operation unit side relative to the end position of the middle separation device 12C. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes a traveling machine body having a pair of left and right crawler traveling devices and a riding-type driving unit, and a pre-cutting processing unit including three weeding tools arranged in the lateral direction of the traveling machine body includes The present invention relates to a combine coupled to a lateral side portion of a driving unit.

  Conventionally, as shown in, for example, Patent Document 1, the combine includes three dividers 80L, 80C, and 80R arranged in the lateral direction of the traveling machine body, planted crops from the right divider 80R and the central divider 80C, the left divider 80L, and There was one provided with a pair of left and right scraping rotary packers 12L and 12R that scrape and merge planted crops from the central divider 80C.

JP 2009-34103 A (paragraph [0065], FIGS. 11, 12, and 15)

  Of the three weeding tools, the distance between the tips of the middle weeding tool located in the center and the outer weeding tool located on the outside on the driving unit side, and the outside on the side opposite to the driving unit side If the distance between the tips of the outer weed tool and the middle weed tool is set to an interval that allows the introduction of two rows of planted cereals, only two raising paths will be provided behind the weed tool. Although the structure is simple, an advantageous combine can be obtained so that four rows of planted cereal can be harvested when working in the middle cut mode.

  In order to obtain this type of combine, a pair of stirring rings are engaged and interlocked with each other, and the planted cereal and the middle weed tool and the other outer weed from the middle weed tool and one outer weed tool. The stocker side with the planted cereal cocoon from the tool is sent into the reaping device by a pair of scraping wheels, and the stocker of the slaughtered cereal is sent behind the reaping device by a pair of scraping wheels. With this configuration, it is possible to obtain a transmission structure with a simple structure such as only transmitting the driving force to one of the raking wheels without transmitting the driving force to both of the raking wheels.

However, when the above-described conventional technique is applied, a problem may occur in the finish after cutting.
That is, when a pair of scraping ring bodies is provided by applying the conventional technique, the position where the pair of scraping ring bodies mesh with the position of the tip of the middle weed tool matches in the lateral direction of the traveling machine body.
Normally, when working in the form of swivel cutting, one set of planted cereals is introduced between the middle weed tool and the outer weed tool on the driving side, and the outer weed tool on the side opposite to the driving part side It is carried out in the form of introducing two rows of planted cereals between the mid-part grass tools. Among the two rows of planted cereals introduced between the outer weed tools and the middle weed tools on the opposite side of the driving unit side, When the scraping ring body is scratched, it is drawn over a long distance toward the meshing portion of the scraping ring body. Therefore, the lodging angle caused by the pulling of the planted cereals closer to the outer weeding tools becomes larger, and the harvesting points by the harvesting device of the planted cereals closer to the outer weeding tools and the middle weeding tools The difference in height from the cutting portion by the cutting device for the planted cereals on the near side becomes large, and unevenness of the stump height after cutting tends to be noticeable.

  An object of the present invention is to provide a combine that can perform the work in the middle cutting mode with four lines and the structure is simple, and can perform the operation in the turning mode in a good finished state.

The first aspect of the present invention includes a traveling machine body having a pair of left and right crawler traveling devices and a riding type driving unit, and the pre-cutting processing unit including three weeding tools arranged in the lateral direction of the traveling machine body includes the traveling machine body. In the combine coupled to the lateral side portion of the operating unit in
The distance between the tips of the middle weed tool located at the center of the three weed tools and the outer weed tool located on the outer side on the driving unit side, and the operating part of the three weed tools The distance between the tips of the outer weed tool and the middle weed tool located on the outer side opposite to the side is set to an interval at which two rows of planted cereal can be introduced,
The stocker side of the planted cereals from the middle weed tool and the outer weed tool on the operating unit side is raked into the reaping device, and the stocker side of the reaped cereal is sent to the rear of the reaping device. A scraping wheel that rotates in the manner described above, and the stocker side of the planted cereal from the outer weeding tool on the side opposite to the middle weeding tool and the driving unit side, A scraping wheel that rotates so as to send the stock side of the harvested cereal rice cake to the rear of the harvesting device, and interlocked by engagement,
A portion where the pair of scraping ring bodies are engaged with each other is arranged so as to be biased to a side opposite to the side where the operation unit is located with respect to the position of the tip of the middle weed tool.

  According to the configuration of the first aspect of the invention, the distance between the tips of the middle weed tool and the outer weed tool on the side of the driving unit, and the tips of the outer weed tool and the middle weed tool on the side opposite to the driving unit side. Since the interval of 2 is set to an interval that allows the introduction of 2 planted cereals, it is opposite to the driving side and the driving path on the rear side of the outer and middle weeds and the driving side. It is possible to perform work in the middle cutting mode by introducing two planted cereals into each of the raising paths behind the side outer weed tools and the middle weed tools.

  A stir ring that stirs the planted cereals from the middle weed tool and the outer weed of the driving section, and a planting from the outer weed tool on the opposite side of the middle weed tool and the driving section side. Since it is provided by interlocking with a scraping wheel that acts on the standing cereal rice cake, a pair of scraping wheels can be driven by simply transmitting a driving force to one of the scraping wheels. The planted cereals from the two weed tools can be mowed and transported as prescribed.

  Since the part where the pair of scraped ring bodies mesh is biased to the side opposite to the side where the driving part is located with respect to the position of the tip of the middle splitting tool, work is performed in the form of turning In this case, the planted cereal close to the outer sown cultivator out of the two sown cereals introduced between the outer divergence device and the middle divergence device on the side opposite to the driving unit side is The distance pulled toward the meshing part of the scraped ring body by shortening as much as possible is shortened as much as possible, and the lying angle by pulling the planted grain culm is minimized, and the planted grain stalk and medium Cutting can be performed in a state where the difference in height between the cutting points of the planted cereals close to the weeding tool is made small.

  Therefore, it is possible to efficiently perform the work in the middle cutting mode with four-row cutting while having a simple structure that only has two pull-up paths and only transmits power to one of the scraping wheels. In addition, the work in the form of swivel can be performed in a finished state in which the stump height is uniform.

In the second aspect of the present invention, the traveling body of the crawler belt in the crawler traveling device positioned on the side where the operating unit is located in the position of the distal end of the outer weeding tool on the operating unit side and the left and right crawler traveling devices. The position of the outer edge in the lateral direction matches or substantially matches the lateral direction of the traveling aircraft,
The crawler belt travels in the crawler travel device located on the opposite side of the position of the tip of the outer weed tool on the side opposite to the operation unit and the side on which the operation unit is located in the pair of left and right crawler travel devices. The position of the outer end in the lateral direction of the airframe coincides with or substantially coincides with the lateral direction of the traveling body.

  According to the configuration of the second aspect of the invention, when working in the middle cutting mode, the outside of the two planted cereals introduced between the outer weed tool and the middle weed tool on the driving unit side The position of the planted grain culm close to the weeding implement and the position of the outer end of the crawler belt of the traveling unit on the driving unit side are substantially matched in the direction of the traveling machine body, and the outer part on the opposite side to the driving unit side Of the two planted cereals introduced between the grass cutter and the middle chopsticks, the position of the planted potato pods close to the outer chopsticks and the traveling device on the side opposite to the driver side The position of the outer end of the crawler belt is substantially coincided with the direction of the traveling machine body, and it is easy to avoid stepping on the planted culm on the uncut ground by the left and right crawler belts.

  Therefore, it is easy to avoid stepping of the planted cereals in the uncut area with the crawler belt, and the work in the middle cutting mode can be easily performed.

It is a left view which shows the whole combine. It is a top view which shows the whole combine. It is a right view which shows the whole combine. It is a front view which shows the whole combine. It is a schematic plan view of a pre-cutting processing unit. It is a top view which shows the front part of a cutting pre-processing part. It is a top view which shows the arrangement | positioning structure of the scraping ring body in a pre-cutting process part, and a scraping endless belt. It is a front view which shows the arrangement | positioning structure of the scraping ring body in a pre-cutting process part, and a scraping endless belt. It is a side view which shows the arrangement | positioning structure of the scraping ring body in a pre-cutting process part, and a scraping endless belt. It is a top view which shows the front part of the process part between cuttings provided with 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. FIG. 3 is a right side view showing the entire combine according to the embodiment of the present invention. FIG. 4 is a front view showing the entire combine according to the embodiment of the present invention. As shown in these drawings, the combine according to the embodiment of the present invention includes a traveling machine body equipped with a pair of left and right crawler traveling devices 1L and 1R, and is connected to the front end portion of the body frame 2 of the traveling machine body. And a threshing device 3 and a grain bag packing unit 4 arranged side by side in the lateral direction of the traveling machine body on the rear side of the machine body frame 2 of the traveling machine body.

This combine harvests rice and wheat.
That is, the traveling machine body includes an engine 5 provided at the right end portion on the front end side of the body frame 2, and the pair of left and right traveling devices 1 </ b> L and 1 </ b> R are driven by the output of the engine 5 to self-run. The traveling machine body includes a boarding type driving unit 20 equipped with a driver seat 21 provided above the engine 5, and is of a boarding type so as to board and drive the driving unit 20.

  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 the axis P of the traveling machine body at the left lateral side portion of the driving unit 20.

  The pre-cutting processing unit 10 has three pre-processing unit frames 11 that are positioned side by side in the lateral direction of the traveling machine body at the front end of the pre-cutting processing unit 10 when the pre-processing unit frame 11 is swung by the lifting cylinder 6 (see FIG. 1). The weeding tools 12L, 12C, 12R are moved up and down to the lowering work position where the weeding tools 12L, 12C, 12R are lowered to the vicinity of the ground and the ascending non-working position where each weeding tool 12L, 12C, 12R is 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). Process.

  As shown in FIG. 3, the grain bagging unit 4 includes a cerealing device 4 a having a start end portion communicating with a grain carrying-out portion of the threshing device 3, and a grain having an input port communicating with a discharge portion of the cerealing device 4 a. The tank 4b is provided with two bagging hoppers 4c and 4c provided side by side in the longitudinal direction of the traveling machine at the bottom of the grain tank 4b.

  That is, the threshing grain bagging unit 4 inputs the threshing grains that have been selected by the sorting unit (not shown) of the threshing device 3 as having become a single grain into the grain tank 4b by the cerealing device 4a. Then, it is recovered and stored by the grain tank 4b. Each bagging hopper portion 4c is loaded with a straw bag at its discharge port 4d and opened to discharge the threshing grains stored in the grain tank 4b into the bag by natural outflow. .

The pre-cutting processing unit 10 will be described in detail.
As shown in FIGS. 1 and 6, the pre-processing unit frame 11 of the pre-cutting processing unit 10 includes a main frame 11 a serving as a transmission case that is supported by the machine body frame 2 so as to be swingable up and down, and this main frame 11 a. 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. 6 is a plan view showing the front part of the pre-cutting processing unit 10. As shown in this figure and FIGS. 1, 2, 4, and 5, the pre-cutting processing unit 10 includes the three weeding tools 12L, 12C, and 12R, and the rear of the weeding tools 12L, 12C, and 12R. A pair of left and right scraping wheels provided on the raising path 13, provided with a clipper-shaped cutting device 15 provided at the rear of the lower end side of the raising device 14, and provided above the cutting device 15. 16a, 16b and a pair of left and right scraping endless belts 17a, 17b, and a feeding device 18 having a conveying start end positioned above the pair of left and right scraping wheels 16a, 16b. The raising and cutting of the cereal mash and the supply of the chopped mash to the threshing device 3 are performed.

  That is, as shown in FIGS. 4 and 6, among the three weeding tools 12L, 12C, and 12R, the middle weeding tool 12C located at the center and the distal end 12c of the outer weeding tool 12R located on the operation unit 20 side, The distance W1 between 12b, and the front and rear ends 12a, 12c of the outer weeding tool 12L and the middle weeding tool 12C, which are located on the opposite side of the driving unit 20 side among the three weeding tools 12L, 12C, 12R. The interval W2 is set to an interval at which two rows of planted culm a can be introduced.

  That is, the pre-cutting processing unit 10, when an operation in the middle-split cutting mode, is performed, the two cultivated cereals a are separated from the driving unit side by the outer weeding tool 12 </ b> R and the cutting tool 12 </ b> C on the driving unit side. Is introduced into the raising path 13 and the two vegetated cereals a are caused to rise on the opposite side to the driving part side by the outer weeding tool 12L and the middle weeding tool 12C opposite to the driving part side. Introduced into No. 13 and harvested a total of 4 planted cereals.

  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.

  FIG. 7 is a plan view showing an arrangement structure of the scraping ring bodies 16a and 16b and the scraping endless belts 17a and 17b in the pre-cutting processing unit 10. FIG. FIG. 8 is a front view showing an arrangement structure of the scraped ring bodies 16a and 16b and the scraping endless belts 17a and 17b in the pre-cutting processing unit 10. As shown in these drawings and FIG. 6, each of the scraping ring bodies 16 a and 16 b includes a plurality of scraping claws 16 c that are provided so as to be integrally rotatable. One scraper ring body 16b of the pair of left and right scraper ring bodies 16a and 16b is supported by the main frame 11a so as to be freely driven, and the other scraper ring body 16a is supported by the main frame 11a so as to be freely rotatable. Yes. The idle-side scraping ring body 16a engages the pair of left and right scraping ring bodies 16a and 16b by meshing the scraping claw 16c with the scraping claw 16c of the driving-side scraping ring body 16b. As a result, the driving force of the driving side scraping ring body 16b is transmitted and driven. The location Z where the pair of left and right scraped ring bodies 16a and 16b mesh is arranged at a position where the bias distance D is biased on the side opposite to the side where the operating portion 20 is located with respect to the tip 12c of the middle blade 12C. is there.

  Each of the scraping endless belts 17a and 17b includes a driving pulley 30 that is rotatably provided integrally with the corresponding scraping ring body 16a and 16b, and an idle pulley 32 that is rotatably supported at the tip of the belt cover 31. It is wound and driven by a drive pulley 30. Each scraping endless belt 17a, 17b is provided with a plurality of scraping arms 17c that are integrally formed side by side in the rotational direction thereof.

  FIG. 9 is a side view showing an arrangement structure of the scraped ring bodies 16a and 16b and the scraping endless belts 17a and 17b in the pre-cutting processing unit 10. As shown in FIG. 7 and FIG. 7, the front end side of each scraping ring body 16a, 16b and the start end side of each scraping endless belt 17a, 17b protrude forward from the cutting edge 15a of the reaping device 15, Acts on the planting side of the planted cereal.

  That is, the left-side scraping endless belt 17a and the left-side scraping ring body 16a are scraped to the root side of the planted cereal that has been raised and processed by the left-side pulling device 14, and the scraping claw 16c. The reaping device 15 is laterally fed toward the meshing point Z of the pair of left and right scraping wheels 16a, 16b with the left pulling device 14 acting on the left side. Crawl on. 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 to the reaping device 15 while being laterally fed toward the meshing point Z of the pair of left and right scraping wheels 16a and 16b. Bring

  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 meal is fed to the rear of the harvesting device 15 and supplied to the conveyance start end of the supply device 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 outer weed tools 12L and 12R. .

  The supply device 18 includes a stock source side transport device 18b that sandwiches and conveys the stock side of the harvested cereal rice bran by an endless rotating chain 18a, and a tip side transport device that latches and conveys the ear side of the harvested grain rice bran by the locking arm 18c. By 18d, the harvested cereal mash from the reaping device 15 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.

  The middle guide bar 35 shown in FIGS. 5 and 6 stirs the planted side of the planted grain barn located near the weeding tool support barn 11b located in the center, and the scraper endless belt 17a, Guide to 17b. The left guide rod 36 shown in FIGS. 6 and 7 forms a conveyance path by the left scraping endless belt 17a and the scraping ring body 16a. The right guide rod 37 shown in FIGS. 6 and 7 forms a conveyance path by the right scraping endless belt 16b and the left and right scraping ring bodies 16a and 16b. The left end 37a of the right guide rod 37 is fastened and fixed to the support provided on the main frame 11a by a connecting bolt. The right end portion 37b of the right guide rod 37 is fastened and fixed to the support portion provided on the weeding tool support rod 11b by a connecting bolt. It is constituted by a strip made of spring steel so as to be elastically deformed by the change in volume and absorb the volume change.

  As shown in FIGS. 2 and 4, the pre-cutting processing unit 10 is configured in a state where the right end of the pre-cutting processing unit 10 is positioned in front of the operating unit 20 in a state where the pre-cutting processing unit 10 is lowered to the lowering work position. That is, the overall processing width of the pre-cutting processing unit 10 is close to the distance between the outer ends of the crawler belts 1a of the left and right traveling devices 1 and 1, and the pre-cutting processing unit 10 The operation in the form is performed in a state in which it is easy to avoid stepping on the planted cereal by the crawler belt 1a.

  That is, as shown in FIG. 4, the position of the distal end 12b of the outer weeding tool 12R on the driving unit side and the travel located on the side (right side) where the driving unit 20 of the pair of left and right traveling devices 1L and 1R is located. The position of the outer end of the crawler belt 1a in the apparatus 1R in the lateral direction of the traveling machine body is substantially matched in the lateral direction of the traveling machine body. Traveling device 1L located on the opposite side (left side) of the position of the distal end 12a of the outer weeding tool 12L on the side opposite to the driving unit side and the side on which the driving unit 20 is located in the pair of left and right traveling devices 1L, 1R. The position of the outer end of the crawler belt 1a in the lateral direction of the traveling machine body is aligned in the lateral direction of the traveling machine body.

  Instead of this configuration, a configuration is adopted in which the position of the tip 12b of the outer weeding tool 12R on the driving unit side and the position of the outer end of the crawler belt 1a in the driving device 1R on the driving unit side are matched in the lateral direction of the traveling machine body. May be implemented. Further, the position of the tip 12a of the outer weeding tool 12L on the side opposite to the driving unit side and the position of the outer end of the crawler belt 1a in the traveling device 1 on the side opposite to the driving unit side are substantially the same in the lateral direction of the traveling machine body. You may implement by adopting the structure to make.

  As shown in FIGS. 2 and 4, the pre-cutting processing unit 10 includes a weed bar 39 extending upward from a weed tool support rod 11 c located at the center. This weed bar 39 separates the planted side of the planted cereal introduced into the left raising path 13 and the planted side of the planted cereal introduced into the right induced path 13 by separating them. Let The connecting rod 38 shown in FIG. 4 connects the upper end sides of the pair of left and right pulling devices 14 and 14.

FIG. 10 is a plan view showing a front portion of the pre-cutting processing unit 10 having another embodiment. As shown in this figure, a comparison between the pre-cutting processing unit 10 having another embodiment and the pre-cutting processing unit 10 having the embodiment of the invention shown in FIG. The engagement point Z of the ring bodies 16a and 16b is different in terms of the magnitude of the deviation distance D in which the engagement point Z is deviated with respect to the tip 12c of the middle split grass tool 12C. In other respects, another embodiment is different. The pre-cutting processing unit 10 provided and the pre-cutting processing unit 10 provided with the embodiment of the invention shown in FIG. 7 have the same configuration.
The deviation distance D in the pre-cutting processing unit 10 having another embodiment is larger than the deviation distance D in the pre-cutting processing unit 10 having the embodiment of the invention shown in FIG.
In other words, the meshing point Z of the pair of left and right scraping ring bodies 16a, 16b in the pre-cutting processing unit 10 having another embodiment is such that the weeding tool support bar 11b is in relation to the central weeding tool support bar 11b. It is located at a position outside the lateral side.

  In the present invention, in addition to the combine provided with the driving unit 20 on the right side of the traveling machine body, the driving unit 20 is provided on the left side of the traveling machine body, and the pre-cutting processing unit 10 is connected to the right lateral side portion of the driving unit of the traveling machine body. It can also be used for other combine harvesters.

1L, 1R Crawler traveling device 10 Pre-cutting processing unit 12L External weeding tool on the side opposite to the driving unit side 12C Middle weeding tool 12R External weeding tool on the driving unit side 15 Cutting device 20 Driving unit 16a, 16b W1 Distance between the middle weed tool and the tip of the outer weed tool on the driving side W2 Distance between the middle weed tool and the tip of the outer weed tool on the side opposite to the driving part Z

Claims (2)

A pair of left and right crawler travel devices, and a traveling machine body having a riding-type driving unit, and a cutting pre-processing unit including three weeding tools arranged in the lateral direction of the traveling machine body are arranged next to the driving unit in the traveling machine body. A combine coupled to a side location,
The distance between the tips of the middle weed tool located at the center of the three weed tools and the outer weed tool located on the outer side on the driving unit side, and the operating part of the three weed tools The distance between the tips of the outer weed tool and the middle weed tool located on the outer side opposite to the side is set to an interval at which two rows of planted cereal can be introduced,
The stocker side of the planted cereals from the middle weed tool and the outer weed tool on the operating unit side is raked into the reaping device, and the stocker side of the reaped cereal is sent to the rear of the reaping device. A scraping wheel that rotates in the manner described above, and the stocker side of the planted cereal from the outer weeding tool on the side opposite to the middle weeding tool and the driving unit side, A scraping wheel that rotates so as to send the stock side of the harvested cereal rice cake to the rear of the harvesting device, and interlocked by engagement,
The combine which arrange | positions the location where the said pair of raking ring body meshes | biases with the side opposite to the side where the said operation part is located with respect to the position of the front-end | tip of the said middle part cutting tool. The outer end of the crawler belt in the lateral direction of the traveling body of the crawler belt in the crawler traveling device located on the side where the operating unit is located among the pair of left and right crawler traveling devices. , And the position of the same or almost match in the lateral direction of the traveling aircraft,
The crawler belt travels in the crawler travel device located on the opposite side of the position of the tip of the outer weed tool on the side opposite to the operation unit and the side on which the operation unit is located in the pair of left and right crawler travel devices. The combine according to claim 1, wherein the position of the outer end in the lateral direction of the airframe is coincident with or substantially coincides with the lateral direction of the traveling body.

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