JP2022002482A - Harvesting device - Google Patents

Abstract

To provide a harvesting device being less likely to cause harvesting loss.SOLUTION: A harvesting device H provided in a harvester for performing harvesting work in a field, comprises a harvesting frame 20 for receiving reaped grain culms, and a reaping blade 15 supported by the harvesting frame 20 and extending in a direction of the harvesting width. The harvesting frame 20 includes left/right sidewalls 21, a rear wall 22 located at a rear end of the harvesting frame 20 and extending across the left/right sidewalls 21, where a guide part 6 for guiding reaped grain culms reaped by the reaping blade 15 is attached to at least any one of the left/right sidewalls 21, and the guide part 6 is located at a rear side of the reaping blade 15 and extends in such a state as to become closer to a central side in the harvesting width direction, toward the rear side.SELECTED DRAWING: Figure 2

Description

The present invention relates to a harvesting device provided in a harvesting machine that performs harvesting work in a field.

As the harvesting apparatus as described above, for example, the one described in Patent Document 1 is already known. This harvesting device (“cutting unit” in Patent Document 1) includes a harvesting frame (“cutting frame” in Patent Document 1) and a cutting blade supported by the harvesting frame (“cutting device” in Patent Document 1). I have.

The harvesting frame then accepts the harvested culm cut by the cutting blade.

Japanese Unexamined Patent Publication No. 2019-180319

In the harvesting apparatus described in Patent Document 1, when the upper part of the harvested grain culm in the standing position located near the left and right side walls of the harvesting frame falls outward in the harvest width direction, the upper part of the harvested grain culm is the side wall of the harvesting frame. It becomes a state where it protrudes from the harvest frame to the outside in the harvest width direction.

And such harvested culms tend to spill out of the harvest frame. As a result, harvest loss occurs.

An object of the present invention is to provide a harvesting apparatus in which harvest loss is unlikely to occur.

The feature of the present invention is a harvesting device provided in a harvester that performs harvesting work in a field, and has a harvesting frame that accepts harvested grain shavings and a cutting blade that is supported by the harvesting frame and extends in the harvest width direction. The harvesting frame has left and right side walls and a rear wall located at the rear end of the harvesting frame and extending over the left and right side walls, and has at least one of the left and right side walls. A guide portion for guiding the harvested grain stalk cut by the cutting blade is attached to the above, and the guide portion is located on the rear side of the cutting blade and on the rear side toward the center in the harvest width direction. It is in the state of being extended.

According to the present invention, the harvested grain culm is guided toward the center side in the harvest width direction by the guide portion. As a result, it is easy to prevent the harvested culm from protruding outward from the harvest frame in the harvest width direction. Further, the harvested culm that protrudes from the harvest frame to the outside in the harvest width direction tends to be contained inside the harvest frame by receiving the guiding action of the guide portion. As a result, harvest loss is unlikely to occur.

That is, according to the present invention, it is possible to realize a harvesting apparatus in which harvest loss is unlikely to occur.

Further, in the present invention, a reel for scraping the planted culm while being driven to rotate and a reel cylinder for raising and lowering the reel are provided, and the front end of the guide portion is located on the front side of the reel cylinder. Is suitable.

When the front end of the guide portion is located on the rear side of the reel cylinder, the harvested grain culm in a state of protruding outward in the harvest width direction from the harvest frame tends to be caught on the reel cylinder. Then, the harvested culm caught on the reel cylinder is liable to spill from the harvest frame without being guided by the guide portion.

Here, according to the above configuration, the front end of the guide portion is located on the front side of the reel cylinder. Therefore, the harvested culm received by the harvesting frame is guided by the guide portion before reaching the position of the reel cylinder in the front-rear direction. This makes it difficult for the harvested culm to come into contact with the reel cylinder. Therefore, it is possible to realize a harvesting device that can easily avoid the situation where the harvested grain culm is caught in the reel cylinder.

Further, in the present invention, it is preferable that the guide portion is provided at a position overlapping the upper portion of the side wall in a side view.

According to this configuration, the guide portion is provided at a relatively high position. Therefore, the guide portion tends to act on the upper part of the cut grain culm. As a result, it is easier to effectively guide the cut grain culm as compared with the case where the guide portion acts on the lower part of the cut grain culm.

Further, in the present invention, it is preferable that the guide portion is provided so as to extend over the side wall and the rear wall.

According to this configuration, the rear end of the guide portion is more likely to be located on the center side in the harvest width direction than in the case where the guide portion is short enough not to reach the rear wall. As a result, the harvested culm is surely guided to the center side in the harvest width direction by the guide portion. As a result, it is easier to more reliably prevent the harvested culm from protruding outward from the harvest frame in the harvest width direction. Further, the harvested culm protruding from the harvest frame to the outside in the harvest width direction tends to be more reliably contained inside the harvest frame by receiving the guiding action of the guide portion.

Further, in the present invention, it is preferable that the guide portion has a rod shape.

When the guide portion has a plate shape, it is assumed that the cut grain culm is damaged due to the action of the edge portion of the guide portion on the cut grain culm.

Here, according to the above configuration, the guide portion has a rod shape. Therefore, it is easier to prevent the cut grain culm from being damaged by the action of the guide portion as compared with the case where the guide portion has a plate shape.

It is a left side view of the combine. It is a top view which shows the structure of a harvesting apparatus. It is a front view which shows the structure of a harvesting apparatus. It is a perspective view which shows the structure of a harvesting apparatus. It is a top view which shows the structure of the lateral feed member. FIG. 5 is a cross-sectional view taken along the line VI-VI of FIG.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F shown in FIGS. 1, 2, 5 and 6 is referred to as “front” and the direction of the arrow B is referred to as “rear”, as shown in FIGS. 2, 3 and 5. The direction of the arrow L is "left", and the direction of the arrow R is "right". Further, the direction of the arrow U shown in FIGS. 1, 3 and 6 is "up", and the direction of the arrow D is "down".

[Overall composition of combine harvester]
As shown in FIG. 1, the ordinary type combine 1 (corresponding to the “harvester” according to the present invention) includes a harvesting device H, a crawler type traveling device 11, a driving unit 12, a threshing device 13, and a grain tank 14. It is equipped with a transport unit 16, a grain discharge device 18, and an engine E.

The traveling device 11 is provided at the lower part of the combine 1. Further, the traveling device 11 is driven by the power from the engine E. The combine 1 can be self-propelled by the traveling device 11.

Further, the operation unit 12, the threshing device 13, and the grain tank 14 are provided on the upper side of the traveling device 11. An operator who monitors the work of the combine 1 can be boarded on the driving unit 12. The operator may monitor the work of the combine 1 from outside the combine 1.

The grain discharge device 18 is provided on the upper side of the grain tank 14. The harvester H is provided at the front of the combine 1. The transport unit 16 is provided on the rear side of the harvesting device H. Further, the harvesting device H includes a cutting blade 15 and a reel 17.

The cutting blade 15 cuts the planted culm in the field. Further, the reel 17 is driven to rotate around the reel axis 17b along the left-right direction of the machine body to scrape the planted grain culm to be harvested. The cut grain culm K (see FIG. 4) cut by the cutting blade 15 is sent to the transport unit 16.

That is, the harvesting device H includes a reel 17 that scrapes the planted culm while being rotationally driven.

With this configuration, the harvester H harvests the grain in the field. Then, the combine 1 can be cut and run by the running device 11 while cutting the planted grain culms in the field by the cutting blade 15.

The harvested grain culm K harvested by the harvesting device H is transported to the rear of the machine body by the transport unit 16. As a result, the harvested grain culm K is transported to the threshing device 13.

In the threshing device 13, the harvested grain culm K is threshed. The grains obtained by the threshing treatment are stored in the grain tank 14. The grains stored in the grain tank 14 are discharged to the outside of the machine by the grain discharging device 18 as needed.

Here, the harvesting device H is provided in the combine 1 that performs harvesting work in the field. Hereinafter, the configuration of the harvesting apparatus H will be described in detail.

[Structure of harvesting equipment]
As shown in FIGS. 1 to 3, the harvesting device H includes a harvesting frame 20. The harvesting frame 20 is configured to receive the cut grain culm K cut by the cutting blade 15.

That is, the harvesting device H includes a harvesting frame 20 that receives the harvested grain culm K.

The harvest frame 20 has left and right side walls 21, a rear wall 22, and a bottom plate 23. The rear wall 22 is located at the rear end of the harvest frame 20 and is provided so as to extend over the left and right side walls 21.

That is, the harvest frame 20 has left and right side walls 21 and a rear wall 22 located at the rear end of the harvest frame 20 and extending over the left and right side walls 21.

The bottom plate 23 is located at the bottom of the harvest frame 20. Further, the bottom plate 23 is provided so as to extend over the left and right side walls 21.

Further, a stretchable reel cylinder 17A is supported on the upper part of the left and right side walls 21. When the reel cylinder 17A is controlled in the extending direction, the reel 17 rises with respect to the harvest frame 20.

Further, when the reel cylinder 17A is controlled in the contraction direction, the reel 17 descends with respect to the harvest frame 20.

With this configuration, as shown in FIG. 1, the reel 17 can be raised and lowered with respect to the harvest frame 20. That is, the harvesting device H includes a reel cylinder 17A that raises and lowers the reel 17.

Further, as shown in FIGS. 2 and 3, the cutting blade 15 is supported by the bottom plate 23. Further, the cutting blade 15 extends in the left-right direction. In the present embodiment, the harvest width direction of the harvesting apparatus H is the left-right direction.

That is, the harvesting device H is supported by the harvesting frame 20 and includes a cutting blade 15 extending in the harvesting width direction.

The cutting blade 15 has a fixed blade 30 and a movable blade 31. The fixed blade 30 is provided so as to project forward. The fixed blade 30 is supported by the bottom plate 23. Further, the movable blade 31 reciprocates in the left-right direction of the machine body by the driving force transmitted from the movable blade driving mechanism (not shown). As a result, the movable blade 31 reciprocates in the left-right direction of the machine body with respect to the fixed blade 30. Then, the cutting blade 15 cuts the planted culm by the fixed blade 30 and the movable blade 31.

Here, the line P in FIG. 2 indicates the center position of the harvest frame 20 in the left-right direction of the machine body. The transport unit 16 is located on the left side of the line P. That is, the transport unit 16 is arranged at a position deviated to the left with respect to the center position of the harvest frame 20 in the left-right direction of the machine body. The front end portion of the transport portion 16 is communicated with the rear wall 22.

Further, the harvesting device H includes an auger 40. The auger 40 is rotationally driven around the auger shaft core 40b. The auger shaft core 40b is along the left-right direction of the machine body.

As shown in FIGS. 2 and 3, the auger 40 has a first screw body 41, a second screw body 42, and a scraping claw 43. The first screw body 41 and the second screw body 42 are formed in a spiral shape. Further, the scraping claw 43 has a rod shape and protrudes outward in the radial direction of the auger 40.

The scraping claw 43 is provided at a position facing the front end portion of the transport portion 16. Further, the first screw body 41 is provided on the right side of the scraping claw 43. Further, the second screw body 42 is provided on the left side of the scraping claw 43.

As the auger 40 is rotationally driven, the first screw body 41 conveys the harvested grain culm K received by the harvesting frame 20 to the left. At the same time, the second screw body 42 transports the harvested grain culm K received by the harvesting frame 20 to the right. Then, the scraping claw 43 scrapes the harvested grain culm K to the rear of the machine body.

Further, as shown in FIGS. 2 and 3, the harvesting apparatus H includes left and right dividers 50 projecting forward. The left divider 50 is supported by the front end of the left side wall 21. Further, the right divider 50 is supported by the front end portion of the right side wall 21.

[Structure of guide part]
As shown in FIGS. 2 and 3, the harvesting apparatus H includes a guide portion 6. The guide portion 6 has a rod shape. Further, as shown in FIG. 2, the guide portion 6 is located behind the cutting blade 15.

In the present embodiment, the guide portion 6 is attached to the left side wall 21. The guide portion 6 is provided so as to extend over the left side wall 21 and the rear wall 22. The guide portion 6 extends so as to be located on the right side toward the rear side. That is, the guide portion 6 extends in a state of being located toward the center side in the harvest width direction toward the rear side.

That is, the guide portion 6 is located on the rear side of the cutting blade 15 and extends toward the rear side in a state of being located on the center side in the harvest width direction.

Further, the guide portion 6 is not attached to the right side wall 21.

However, the present invention is not limited to this. For example, the guide portion 6 may be attached to the right side wall 21 and the guide portion 6 may be provided so as to extend over the right side wall 21 and the rear wall 22. In this case, the guide portion 6 may or may not be attached to the left side wall 21.

That is, the guide portion 6 is provided so as to extend over the side wall 21 and the rear wall 22.

Then, as shown in FIG. 4, the guide unit 6 guides the harvested grain culm K located at the left end portion of the harvesting frame 20 to the right side.

That is, a guide portion 6 for guiding the cut grain culm K cut by the cutting blade 15 is attached to at least one of the left and right side walls 21.

Further, as shown in FIG. 2, the front end of the guide portion 6 is located on the front side of the reel cylinder 17A. Further, as shown in FIG. 1, the guide portion 6 is provided at a position overlapping the upper portion of the side wall 21 in the side view.

In this embodiment, the guide portion 6 extends linearly. However, the present invention is not limited to this, and the guide portion 6 may be bent or may be smoothly curved.

[Structure of lateral feed member]
As shown in FIGS. 2 and 5, the harvesting apparatus H includes left and right lateral feed members 70. The left and right lateral feed members 70 are fixed to the movable blade 31. As a result, the left and right lateral feed members 70 reciprocate in the left-right direction of the machine body together with the movable blade 31. Further, as shown in FIG. 6, each lateral feed member 70 is provided so as to extend rearward and upward from the movable blade 31.

As shown in FIG. 2, the length of the left lateral feed member 70 in the left-right direction is shorter than the length of the right lateral feed member 70 in the left-right direction. The left lateral feed member 70 is arranged at a position deviated to the left with respect to the transport portion 16. Further, the right lateral feed member 70 is arranged at a position deviated to the right with respect to the transport portion 16.

With the above configuration, the left lateral feed member 70 carries the cut grain culm K to the right while reciprocating in the left-right direction of the machine body. Further, the right lateral feed member 70 conveys the harvested grain culm K to the left while reciprocating in the left-right direction of the machine body.

Here, as shown in FIGS. 5 and 6, each lateral feed member 70 has a plurality of support portions 71 and a grain culm acting portion 72. As shown in FIG. 6, the support portion 71 and the grain culm action portion 72 are fastened to each other by the first bolt nut b1. Further, the support portion 71 is fixed to the upper surface of the movable blade 31 by the second bolt nut b2.

As shown in FIG. 6, the cutting blade support portion 51 is fixed to the front end portion of the bottom plate 23. The fixed blade 30 is fixed to the cutting blade support portion 51.

Further, the grain culm acting portion 72 has a plurality of protruding portions 72a. As shown in FIG. 2, in the left lateral feed member 70, the plurality of protrusions 72a extend toward the right rear. Further, in the right lateral feed member 70, the plurality of projecting portions 72a extend toward the left rear.

Here, the first bolt / nut b1 shown in FIG. 6 is configured to be removable. Then, by releasing the fastening of the first bolt nut b1, the support portion 71 and the grain culm acting portion 72 can be separated from each other. Then, as shown in FIG. 5, in a state where the grain culm acting portion 72 is turned upside down, the support portion 71 and the grain culm acting portion 72 are fastened again by the first bolt nut b1 to form a plurality of protruding portions 72a. The extending direction is reversed in the left-right direction.

That is, by turning over the grain culm acting portion 72 in the left lateral feed member 70, the plurality of projecting portions 72a in the left lateral feed member 70 are in a state of extending toward the left rear. Further, by turning over the grain culm acting portion 72 in the right lateral feed member 70, the plurality of projecting portions 72a in the right lateral feed member 70 are in a state of extending toward the right rear.

Here, FIG. 5 shows a reference line Q. The reference line Q is a line indicating the center position of the left and right bolt holes 72b in the grain culm acting portion 72. In other words, the reference line Q is a line located equidistant from the left and right bolt holes 72b. The arrangement of the plurality of protrusions 72a is symmetrical with respect to the reference line Q. As a result, when the grain culm acting portion 72 is turned upside down, the extending direction of the plurality of protruding portions 72a is reversed in the left-right direction, but the arrangement of the plurality of protruding portions 72a does not change. The bolt of the first bolt nut b1 is inserted into the bolt hole 72b.

For example, as shown in FIG. 5, the left culm acting portion 72 has three protruding portions 72a. Of the three protrusions 72a, the central protrusion 72a is provided at the position of the reference line Q. Further, the distance from the left protrusion 72a of the three protrusions 72a to the reference line Q and the distance from the right protrusion 72a of the three protrusions 72a to the reference line Q are equal to each other.

According to the configuration described above, the harvested grain culm K is guided toward the center side in the harvest width direction by the guide unit 6. As a result, it is easy to prevent the harvested grain culm K from protruding outward in the harvest width direction from the harvest frame 20. Further, the harvested grain culm K protruding from the harvest frame 20 to the outside in the harvest width direction tends to be contained inside the harvest frame 20 by being guided by the guide portion 6. As a result, harvest loss is unlikely to occur.

That is, with the configuration described above, it is possible to realize the harvesting apparatus H in which harvest loss is unlikely to occur.

[Other embodiments]
(1) The traveling device 11 may be a wheel type or a semi-crawler type.

(2) The guide portion 6 does not have to be rod-shaped. For example, the guide portion 6 may have a plate shape.

(3) The front end of the guide portion 6 may be located on the rear side of the reel cylinder 17A.

(4) The reel cylinder 17A may not be provided.

(5) The guide portion 6 may be provided at a position that does not overlap the upper portion of the side wall 21 in a side view.

(6) The guide portion 6 may be configured to be short enough not to reach the rear wall 22.

It should be noted that the configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in other embodiments as long as there is no contradiction. Moreover, the embodiment disclosed in the present specification is an example, and the embodiment of the present invention is not limited to this, and can be appropriately modified without departing from the object of the present invention.

The present invention can be used not only for the combine harvester but also for various harvesters other than the combine harvester.

1 combine (harvester)
6 Guide part 15 Cutting blade 17 Reel 17A Reel cylinder 20 Harvesting frame 21 Side wall 22 Rear wall H Harvesting device K Harvesting culm

Claims (5)

It is a harvesting device installed in a harvester that performs harvesting work in the field.
A harvest frame that accepts harvested culms,
It is equipped with a cutting blade that is supported by the harvest frame and extends in the harvest width direction.
The harvest frame has left and right side walls and a rear wall located at the rear end of the harvest frame and extending over the left and right side walls.
A guide portion for guiding the cut grain culm cut by the cutting blade is attached to at least one of the left and right side walls.
The guide portion is a harvesting device that is located on the rear side of the cutting blade and extends toward the rear side in a state of being located on the center side in the harvest width direction. A reel that squeezes the planted culm while being driven by rotation,
A reel cylinder for raising and lowering the reel is provided.
The harvesting device according to claim 1, wherein the front end of the guide portion is located on the front side of the reel cylinder. The harvesting device according to claim 1 or 2, wherein the guide portion is provided at a position overlapping the upper portion of the side wall in a side view. The harvesting apparatus according to any one of claims 1 to 3, wherein the guide portion is provided in a state extending over the side wall and the rear wall. The harvesting apparatus according to any one of claims 1 to 4, wherein the guide portion is rod-shaped.

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