JP2020130061A - combine - Google Patents

Abstract

To provide an inside combine that makes it easy to collect the discharged dust.SOLUTION: A dust discharge cover (33) for covering an ejection outlet of a combine is provided in which a side plate (33c) inside of a machine body among the opposed side plates of the dust discharge cover (33) is extended vertically in the left and right directions of the machine body. Also, a distance (L1) in the left and right directions between the side plate (33c) inside of the machine body and the middle position (C1) between a pair of travel devices (2a, 2b) is made shorter than both distances (L2, L3) in the left and right directions between the side plate (33c) inside of the machine body and each travel device (2a, 2b) (L1<L2, L3).SELECTED DRAWING: Figure 6

Description

The present invention relates to a combine in which the outlet of the threshed dust is covered with a dust cover.

In general, the combine harvests the culms cut in the harvesting section, threshs the culms in the threshing section, and then sorts the combine into grains and dust in the sorting section. The grains sorted by the sorting section are transported to the grain tank and discharged to the outside of the machine via the discharge auger. In addition, dust such as waste straw sorted by the sorting section is discharged to the outside of the machine from the discharge port provided behind the threshing section, but especially in the case of a general-purpose combine, all the harvested culms are threshed. Since it is thrown into the unit, a large amount of dust is discharged from the discharge port to the outside of the machine.

In such a general-purpose combine, a dust cover that covers the discharge port is attached to the rear end side of the traveling machine body, and the dust discharged from the discharge port is already collected through the guide plate provided inside the dust cover. A technique for discharging to the cut ground side is conventionally known (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-029657

However, in the general-purpose combine described in Patent Document 1, dust such as waste straw, which is guided and guided to the mowed ground side by the dust cover, falls over the running traces of one of the left and right crawlers. It was troublesome to collect the dust that had fallen on the travel trace.

Therefore, an object of the present invention is to provide a combine that facilitates recovery of dust.

The combine according to the present invention includes a machine body (3) supported by a pair of left and right traveling devices (2), a cutting section (5) provided on the front side of the machine body (3) so as to be vertically movable, and the cutting section (5). A threshing sorting unit (7, 9) that performs threshing and sorting processing on the grain shavings cut in 5), and a grain tank (10) that stores the grains selected by the threshing sorting unit (9). , A discharge port (31) for discharging the dust discharged from the threshing sorting unit (9) to the outside of the machine (3), and a dust discharge cover (33) for covering the discharge port (31). Among the side plates of the dust exhaust cover (33) facing each other in the left-right direction of the machine body, the side plate (33c) inside the machine body is extended in the vertical direction, and the side plate (33c) inside the machine body and the said The distance (L1) in the left-right direction between the center position (C1) between the pair of traveling devices (2a, 2b) is the distance between the side plate (33c) inside the machine body and each traveling device (2a, 2b). It is characterized in that it is arranged so as to be shorter than any of the distances (L2, L3) in the left-right direction (L1 <L2, L3).

Further, for example, referring to FIG. 6, the guide guide (37) for guiding the dust discharged from the discharge port (31) is provided, and the guide guide (37) is a guide surface for guiding the dust. Is inclined downward toward the inside of the machine, and when the machine (3) is viewed from the rear, an extension line (Y1) of the guide surface of the guide guide (37) and a side plate inside the machine. The extension line (P) of the guide surface for guiding the dust discharged (33c) is between the left and right traveling devices (2a, 2b) and above the ground contact surface of the traveling device (2a, 2b). It is preferable that it is configured to intersect at.

Further, the guide guides (37) are provided from a central position between the pair of traveling devices (2a, 2b) in the left-right direction among the plurality of guide guides (37, 38) provided in the left-right direction. It is preferable that it is the farthest guide.

Further, the grain removal sorting unit (7, 9) is provided with a handling cylinder (20) that rotates around a rotation axis (C2) extending in the front-rear direction of the machine body, and the dust exhaust cover (33) is the rotation axis. The distance (L4) between (C2) and the side plate (33c) inside the machine body is larger than the distance (L5) between the center of rotation (C2) and the side plate (33c) outside the machine body (L4> L5). Suitable.

The reference numerals in the parentheses are for comparison with the drawings, but do not limit the configuration of the present invention.

According to the first aspect of the present invention, the distance in the left-right direction between the side plate inside the machine body of the dust exhaust cover and the central position between the pair of traveling devices is between the side plate inside the machine body and each traveling device. It is configured to be shorter than any distance in the left-right direction. For this reason, dust that falls along the side plate inside the machine body of the dust cover can be accumulated between the running traces (wadachi) of the left and right crawlers, facilitating the dust collection work. it can.

According to the second aspect of the present invention, the guide guide is provided between the extension line of the guide surface and the extension line of the guide surface for guiding the dust discharged from the side plate inside the machine body between the left and right traveling devices. , It is configured to intersect above the ground plane of the traveling device. Therefore, the guide guide can guide the dust between the running traces (wadachi) of the left and right crawlers.

According to the third aspect of the present invention, the guide guide is the guide guide farthest from the central position between the pair of traveling devices in the left-right direction among the plurality of guide guides provided in the left-right direction. There is. Therefore, even if the guide guide is the outermost guide guide, the dust can be guided between the running traces (wadachi) of the left and right crawlers.

According to the fourth aspect of the present invention, in the dust exhaust cover, the distance between the rotation axis of the handling cylinder and the side plate inside the machine body is larger than the distance between the rotation axis of the handling body and the side plate outside the machine body. It has become. By doing so, the dust can be collected between the running traces (wadachi) of the left and right crawlers without expanding the dust exhaust cover to the outside of the machine body.

A side view of a general-purpose combine to which the present invention is applied. Top view of a general-purpose combine to which the present invention is applied. The cross-sectional view which shows the threshing part and the sorting part. The rear view of the general-purpose combine to which this invention is applied. Top view of the main part on the rear side of the machine including the dust cover. Explanatory drawing which shows the discharge route of the dust waste.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the general-purpose combine 1 has an airframe 3 supported by a traveling device 2 which is a pair of left and right crawler type traveling devices. On the front side of the machine body 3, a cutting section 5 for cutting the grain culm in the field is provided so as to be able to move up and down, and an operator sits on one side in front of the machine body 3 to operate the general-purpose combine 1. An operation unit 6 is provided. A threshing section 7 for threshing the culms cut and transported by the cutting section 5 is provided on the other side of the machine body 3, and a threshed selection is placed below the threshing section 7. A sorting unit 9 for sorting is provided. Behind the operation operation unit 6, a grain tank (grain tank) 10 for storing the grains sorted by the sorting unit 9 and grains stored in the grain tank 10 are discharged to the outside of the machine. A discharge auger 11 for the purpose is provided.

The cutting section 5 is arranged on a divider 12 for weeding the grain culms in the field, a reciprocal cutting blade 13 for cutting the culms sown by the divider 12, and a rear side of the cutting blade 13. A bucket-shaped platform 14 and a scraping reel 15 arranged above the divider 12 and the cutting blade 13 are provided, and the culm scraped into the platform 14 by the scraping reel 15 is cut. The blade 13 is configured to mow. The grain culms cut by the cutting blade 13 are laterally fed to the transport device 16 by a platform auger (not shown) in the platform 14, and then a feeder 19 (FIG. 3) arranged inside the transport device 16. (See) to be transported to the rear side. The terminal portion of the feeder 19 is connected to the upper front end side of the threshing section 7, and is configured to put the harvested grain into the threshing section 7 together with the cut grain culm.

As shown in FIG. 3, the threshing section 7 is rotatably supported in a handling chamber 17 into which the grain culms cut by the cutting section 5 are put, and in the handling chamber 17, and has a spiral shape on the outer peripheral surface thereof. The guide plate 20a is provided with a handling cylinder 20 to which a guide plate 20a is attached, and the guide plate 20a is provided with a plurality of protruding handling teeth 20b on which a grain culm is hooked and rotated together with the handling cylinder 20. A transmission pulley 21 is attached to the rear end of the handling cylinder 20, and the transmission pulley 21 is surrounded by a transmission system cover 22 provided on the rear end side of the handling chamber 17. Further, the handling chamber 17 has a lower side (lower portion of the handling cylinder 20) formed by a semi-cylindrical receiving net 23 along the outer periphery of the handling cylinder 20, and the grains thrown into the handling chamber 17 are formed. The culm is rotated together with the handling cylinder 20 by the handling teeth 20b, and is rubbed and threshed by the receiving net 23 while being conveyed to the rear side of the machine body by the guide plate 20a.

The sorting unit 9 includes a swing sorting body 24 that swings and sorts threshing that has passed through the receiving net 23, a sorting case 25 that includes the swing sorting body 24, and a wall insert fan 26 that blows sorting air. It is equipped with a second sorting fan 27 that discharges the dust after sorting to the outside of the machine. As a result, the threshing that has fallen from the receiving net 23 is dropped on the chaff sheave 28 of the rocking sorter 24, and is further leaked downward while being sorted by the chaff sheave 28. The leaked threshing is sorted into the first grain and the second sorted by the sorting wind from the wall insert fan 26. The selected grains are conveyed into the grain tank 10 for storing the grains by the fried grain spiral 29, and are discharged to the outside of the machine through the discharge auger 11 extending from the rear end of the upper surface of the machine body 3.

Further, the second product is reduced to the swing sorting body 24 by the reducing spiral 30 and the sorting operation is performed again. In the present embodiment, the general-purpose combine 1 is provided with a discharge port 31 behind the threshing section 7, and the waste straw that has been threshed in the threshing section 7 and a receiving net 23 fall from this discharge port 31. Of the threshing on the rocking sorter 24, dust such as waste straw sorted by the sorting unit 9 is discharged to the outside of the machine. That is, in the present embodiment, the threshing sorting units 7 and 9 are configured to perform threshing and sorting processing on the grain culms cut by the cutting section 5 by the threshing section 7 and the sorting section 9 described above. The dust discharged from the sorting unit is discharged from the discharge port 31. The discharge port 31 is surrounded by a dust discharge case 32 formed in the shape of a gate, and the dust discharge case 32 is provided with a dust cover 33 for guiding and dropping the discharged dust to the field scene. There is.

As shown in FIGS. 4, 5 and 6, a fuel tank 34 and a fuel filler port 35 thereof are arranged on the rear side of the grain tank 10, and a part of the fuel tank 34 is a threshing section. It is arranged in the space portion S extending in the left-right direction defined between the 7 and the Glen tank 10. Further, the main frame 36 at the rear end of the machine body is provided with a pair of left and right vertical frames 36a and 36b, and these vertical frames 36a and 36b are arranged on the extension lines of the left and right inner side walls of the threshing portion 7. The rear end frame 36c bridged over the vertical frames 36a and 36b supports the shaft portion of the handling cylinder 20, and the rear end frame 36c extends from the vertical frame 36b on the right side toward the center of the machine body to provide a space portion. An extension frame 36d that reaches the inside of S is formed.

The dust exhaust cover 33 is composed of a back plate 33a facing the discharge port 31 and a pair of side covers 33b and 33c provided on the left and right sides of the back plate 33a. The back plate 33a is inclined downward from the rear end frame 36c toward the rear of the machine body, and the pair of side covers 33b and 33c are vertically arranged in the vertical direction with the back plate 33a interposed therebetween. Of these side covers 33b and 33c, the side cover 33b located on the outside of the machine body (left side when viewed from the back surface of the dust exhaust cover 33) extends rearward from the vertical frame 36a on the left side of the machine body. The side cover 33c located on the inside (on the right side when viewed from the back surface of the dust cover 33) extends rearward from the extension frame 36d formed closer to the center of the machine body than the vertical frame 36b on the right side. In this way, by extending the side cover 33c on the right side of the dust exhaust cover 33 to the rear of the extension frame 36d extending to the space S, the side cover 33c is formed by the left and right crawlers 2a and 2b of the traveling device 2. It is arranged along a vertical straight line (two-dot chain line P in FIG. 6) passing through the central portion of the above.

That is, among the side plates of the dust exhaust covers 33 facing each other in the left-right direction of the machine body, the side cover 33c as the side plate inside the machine body is extended in the vertical direction, and the crawler as a pair of traveling devices with the side cover 33c. Arranged so that the distance L1 in the left-right direction between the central position C1 between 2a and 2b is shorter than any distance L2 and L3 in the left-right direction between the side cover 33c and the crawler 2a and 2b. are doing.

Further, when looking at the dust cover 33 as a whole, the dust cover 33 is formed so as to extend inside the machine body with respect to the grain removal portion 7, and is formed with the rotation axis (rotation center) C2 of the handling cylinder 20 extending in the front-rear direction of the machine body. The distance L4 from the side cover 33c is larger than the distance L5 between the rotation axis C2 and the side cover 33b as the side plate on the outer side of the machine body (L4> L5).

Further, a guide plate 37 and an auxiliary guide plate 38 are provided inside the dust exhaust cover 33, and the dust discharged from the discharge port 31 is collected by the guide plate 37 and the auxiliary guide plate 38 in the left-right direction of the machine body ( For example, you will be guided to the already cut land side where the cutting work has already been completed). The guide plate 37 is erected between the inside of the back plate 33a and the inside of the left side cover 33b, and the auxiliary guide plate 38 is attached in an inclined posture with a predetermined space next to the guide plate 37. ing. In the guide plate 37 and the auxiliary guide plate 38 as the plurality of guide guides for guiding the dust, the end (lower end) of the dust cover 33 on the dust discharge port 39 side is the end on the discharge port 31 side, respectively. It is tilted down to the left and right of the aircraft so that it is inside the aircraft rather than the part (upper end).

Next, the flow until the discharged dust such as the discharged straw discharged from the discharge port 31 is discharged will be described with reference to FIG. As shown in FIG. 6, the dust outlet 39 is covered with a dust cover 33 so that dust is not scattered, and the guide plate 37 and the auxiliary guide plate 38 move downward toward the inside of the machine body. Will be guided.

The guide plate 37 is the outermost guide guide of the machine body discharged to the position farthest from the central position C1 between the crawlers 2a and 2b in the left-right direction among the plurality of guide plates, and is a guide for guiding the dust. The surface extension line Y1 is configured to intersect the extension line P of the side cover 33c at an intersection X1 between the left and right crawlers 2a and 2b and above the ground plane of the crawlers 2a and 2b. ing. Therefore, the dust discharged between the guide plate 37 and the auxiliary guide plate 38 is guided to the inside of the machine body along the path R2, and finally falls and accumulates between the crawlers 2a and 2b. ..

Further, in the auxiliary guide plate 38 as well as the guide plate 37, the extension line Y2 of the guide surface for guiding the dust is between the extension line P of the side cover 33c and the left and right crawlers 2a and 2b, and the crawlers. It is configured to intersect the ground planes of 2a and 2b and the intersection X2 above the intersection X1. Therefore, the dust discharged between the auxiliary guide plate 38 and the side cover 33c is guided to the inside of the machine body along the path R1, and finally falls and accumulates between the crawlers 2a and 2b. To do.

The dust that collides with the side cover 33c falls along the side cover 33c, which is a vertical wall. The side cover 33c is configured to protrude to the inside of the machine body to a position slightly beyond the central portion between the left and right crawlers 2a and 2b, more specifically, the central position C1 between the left and right crawlers 2a and 2b. ing. Therefore, the dust that collides with the side cover 33c also falls and accumulates in the central portion between the crawlers 2a and 2b along the side cover 33c.

As described above, in the general-purpose combine 1 according to the embodiment of the present invention, the airframe S on the rear side of the airframe existing between the threshing unit 7 and the grain tank 10 is effectively utilized to effectively utilize the airframe of the dust cover 33. By providing the inner side cover 33c near the center of the machine body, dust such as exhaust straw can be accumulated between the traveling traces (wadachi) of the left and right crawlers 2a and 2b. Further, the extension lines Y1 and Y2 of the guide plate 37 and the auxiliary guide plate 38 do not intersect with the outer line of the crawler 2a, and the intersections X1 and the extension lines Y1 and Y2 and the extension line P of the side cover 33c The fact that X2 is located between the crawlers 2a and 2b and that the intersection of the paths R1 and R2 is located between the left and right crawlers 2a and 2b are combined to more effectively discharge. Dust can be accumulated between the running traces (wadachi) of the left and right crawlers 2a and 2b.

Further, when the dust removal cover 33 is enlarged in the left-right direction, the space portion S can be effectively used without increasing the size of the threshing portion 7, so that the left and right spaces at the rear part of the machine body can be used in a well-balanced manner. It is possible to achieve both effective utilization and facilitation of dust collection work. Further, since the dust exhaust cover 33 expands in the width direction toward the inside of the machine body, its opening (for example, the space between the auxiliary guide plate 38 and the side cover 33c) expands. Therefore, even if a large amount of dust is instantaneously discharged from the threshing sorting units 7 and 9, the dust can be smoothly discharged to the outside of the machine without clogging.

In the above-described embodiment, the full crawler type combine has been described, but the present invention is not limited to this, and the present invention may be applied to, for example, a combine provided with traveling wheels or a half crawler type traveling device. it can. Further, it can be applied not only to general-purpose combines but also to any kind of combine such as a self-removing type.

Further, in the above-described embodiment, the guide surfaces of the guide plate 37 and the auxiliary guide plate 38 have different inclination angles from the main surface that determines the injection direction of the dust and the surface on the lower end side. The extension lines Y1 and Y2 of the guide surface in the embodiment refer to the extension lines of the main surface that determines the injection direction of the dust exhaust. This also applies to the extension line of the side cover 33c. Further, in the above-described embodiment, the extension line P of the side cover 33c is configured to protrude to the inside of the machine body to a position slightly beyond the central position C1 between the left and right crawlers 2a and 2b. For example, the extension line P of the side cover 33c may be projected to the inside of the machine body to a position corresponding to the central position C1, or the extension line P of the side cover 33c may be in front of the central position C1 in the above-mentioned central portion. It may be configured so as to protrude.

Further, in the above-described embodiment, the configuration in which the dust discharged from both the threshing section 7 and the sorting section 9 is discharged from one discharge port 31 to the outside of the machine has been described, but the threshing sorting section describes the configuration. Discharge ports for discharging dust from the threshing unit 7 and the sorting unit 9 may be provided separately. Then, these separately provided discharge ports may be covered with one dust cover to which the present invention is applied, or the dust cover covering either of these separately provided discharge ports may be covered. The invention may be applied. That is, the dust removal cover may be configured to cover the discharge port for discharging the dust discharged from the threshing sorting unit to the outside of the machine.

1 combine (general-purpose combine)
2 Traveling device 3 Airframe 5 Cutting section 7, 9 Threshing sorting section 10 Grain tank (Glen tank)
31 Outlet 33 Dust cover 33c Side cover inside the machine 37 Guide guide (guide plate)
C1 Central position C2 Rotation axis P Extension line Y1 Extension line L1 to L5 Distance

Claims (4)

The aircraft supported by a pair of left and right traveling devices,
A cutting section provided on the front side of the machine so that it can be raised and lowered,
A threshing sorting section that performs threshing and sorting processing on the grain culms cut by the cutting section,
A grain tank for storing grains selected by the threshing sorting section, and
A discharge port for discharging the dust discharged from the threshing sorting unit to the outside of the machine body,
A dust cover that covers the discharge port is provided.
Among the side plates of the dust exhaust cover facing each other in the left-right direction of the machine body, the side plates inside the machine body are extended in the vertical direction, and the center position between the side plates inside the machine body and the pair of traveling devices. The distance between them in the left-right direction is shorter than any distance in the left-right direction between the side plate inside the machine body and each traveling device.
A combine that is characterized by that. A guide guide for guiding the dust discharged from the discharge port is provided.
In the guide guide, the guide surface for guiding the dust is inclined downward toward the inside of the machine body, and when the machine body is viewed from the rear, an extension line of the guide surface of the guide guide and the guide surface are described. The extension line of the guide surface that guides the dust discharged from the side plate inside the machine body is configured to intersect between the left and right traveling devices and above the ground contact surface of the traveling device.
The combine according to claim 1, wherein the combine is characterized by the above. The guide guide is, among the plurality of guide guides provided in the left-right direction, the guide guide farthest from the central position between the pair of traveling devices in the left-right direction.
The combine according to claim 2, wherein the combine is characterized by the above. The threshing sorting unit includes a handling cylinder that rotates around a rotation axis extending in the front-rear direction of the machine body.
In the dust cover, the distance between the rotation axis and the side plate inside the machine body is larger than the distance between the rotation axis and the side plate outside the machine body.
The combine according to any one of claims 1 to 3, wherein the combine is characterized by the above.

Images