JP2012244924A - Ordinary-type combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve smooth cutting operation by making it hard to bring a distal end apex of a divider into contact with a field and also making it hard to disturb the posture of planted crop to be guided.SOLUTION: A combine harvester includes: a pair of right and left dividers 20; a raking reel between the dividers 20; a cutting device 12; and an auger 13 capable of carrying the cut crop to a rear feeder 6. The divider 20 includes: a pair of partition plates 30 opposite to each other on both right and left sides; and a grass dividing rod 31 for guiding the planted crop to the inside of a cutting width inside the partition plates 30. The partition plates 30 include: a top part 30D, the front edge part of which is projected forward at the vertically middle part; and a lower edge part 30E having a downward inclination from the top part 30D to a lower edge part 30B. The grass dividing rod 31 is disposed forward and backward with the distal end part 31a fixed to the vicinity of the top part 30D, and with the rear end part 31b located in the vicinity of the auger 13.

Description

  The present invention provides a pair of left and right dividers capable of weeding a planted crop in front of a self-propelled aircraft over a predetermined cutting width, and can be driven to rotate around a horizontal axis of rotation, and between the pair of dividers. A scraping reel capable of scooping up the planted crop, a harvesting device capable of harvesting the planted crop scraped by the scraping reel, a rotational drive around a horizontal rotation axis, and the cutting The present invention relates to an ordinary combine that is provided with an auger capable of transporting a crop cut by the apparatus to a rear feeder.

Conventionally, as this type of ordinary combine, there has been a configuration in which the divider is provided with a pair of wedge-shaped partitions pointed forward at the left and right sides of the scraping reel (for example, Patent Documents). 1).
The partition is formed in a triangular shape in a side view of the self-propelled aircraft, and one of the three vertices of the triangle (the tip vertex portion) is located at the front end and extends backward from the tip vertex portion. The base is provided in a state of being substantially horizontal, and the divider is disposed in front of the scraping reel in the operating state of the divider.
Therefore, when the combine is advanced, the tip apex of the partition enters the root of the planted crop located at the left and right boundary of the cutting width, and the planted crop within the cutting width can be weeded from other ranges. .
In addition, among the planted crops that have been weeded by the partition, there is also one in which a weed culm for guiding the planted crops at both ends in the width direction to the center side is attached to the inside of the partition .
Specifically, the weed shears are composed of round bars, the front end of the weed shears is fixed to the apex of the front end of the partition, and the rear end is directed slightly toward the auger in plan view. It is attached in a state of being inclined inward and slightly upward in a side view.

JP 2009-27992 A (FIGS. 1 to 3)

The divider can be weeded by being interrupted at the root of the planted crop, so that the divider is used at a position very close to the field surface. Therefore, if there is unevenness on the field surface in front of the self-propelled aircraft, the tip apex of the divider may interfere with the convex part of the field.
In addition, since the divider is arranged in front of the self-propelled aircraft, when the self-propelled aircraft swings up and down due to traveling on the uneven surface of the field, the divider moves further up and down at the position of the divider. The tip apex easily comes into contact with the surface of the field, and as a result, there is a possibility that it becomes an obstacle to traveling.
In order to shorten the overall length of the combine and make it more compact, it is conceivable to reduce the front and rear dimensions of the divider. In this case, although the height position of the rear edge of the weed ridge does not change, the weeds Since the tip of the cocoon is fixed to the tip of the tip, it moves to the rear at a low position, and the weed frog has a steep slope. As a result, the contact position with the planted crop to be guided changes greatly from the bottom to the top as the vehicle travels, and the posture of the planted crop may be easily disturbed.

  Therefore, an object of the present invention is to solve the above-mentioned problems, make it difficult for the tip end of the divider to pierce the field, make it difficult to disturb the posture of the planted crop to be guided, and perform the cutting operation smoothly. There is a place to offer a combine.

  A first characteristic configuration of the present invention includes a pair of left and right dividers capable of weeding a planted crop in front of a self-propelled aircraft over a predetermined cutting width, a rotational drive around a horizontal rotation axis, and the pair A scraping reel that can scrape planted crops that are weeded between the dividers, a reaping device that can harvest planted crops that have been scraped by the scraping reel, and a rotational drive around the horizontal axis And an ordinary combine that is provided with an auger capable of transporting the crop harvested by the harvesting device to a rear feeder, wherein the divider is opposed to the left and right sides of the scraping reel. A pair of partition plates arranged, and a weed culm provided on the inner surface of the partition plate to guide the planted crop into the cutting width, the partition plate having a front edge portion The upper and lower middle part of And a descending edge having a descending slope from the top to the lower edge, and the weed ridge is fixed at the vicinity of the top and the rear end at the vicinity of the auger. It is located in the front-rear direction so as to be located.

According to the first characteristic configuration of the present invention, the partition plate includes a top portion where the upper and lower intermediate portions of the front edge portion protrude forward, and a downward edge portion having a downward slope from the top portion to the lower edge portion. Therefore, the top will be located at a position higher than the lower edge of the partition plate (position away from the field), and even if there are irregularities in the field, the top will pierce and obstruct travel. It becomes easy to prevent.
Further, since the tip of the weed cocoon is fixed to the tip apex portion of the partition plate, the tip position of the weed candy is also higher than the conventional position. On the other hand, if the height position of the rear edge of the weed cocoon is the same as the conventional one, the difference between the front edge height position and the rear edge height position of the weed moth will be smaller, so the slope will be gentler than before. Therefore, the displacement of the contact position with the planted crop to be guided can be reduced, and the posture of the planted crop is hardly disturbed. This effect can be realized regardless of the size of the divider in the longitudinal direction. In particular, when the divider is shortened, the difference from the conventional one is remarkably exhibited. Therefore, shortening the divider size and making the combine compact can also be expected as a secondary effect.
As a result, the tip apex of the divider is unlikely to pierce the field, and the posture of the planted crop to be guided is hardly disturbed, so that the cutting operation can be performed smoothly.

  According to a second characteristic configuration of the present invention, the weed ridge is arranged such that an extension line on the rear end side thereof intersects with the rotation axis of the auger.

  According to the 2nd characteristic structure of this invention, a planted crop can be guide | induced toward the rotating shaft center of an auger with a weed weed. Accordingly, the planted crop is guided to the auger while being cut by the reaping device, and can be guided to the auger without waste, so that the efficiency of guiding the planted crop to the auger can be improved.

  According to a third characteristic configuration of the present invention, the partition plate is configured such that the position of the descending edge portion is the same as the position of the rotation axis of the scraping reel in the operating state or a rear position. There is somewhere.

The scraping reel has a function to guide the planted crop to the auger while catching the planted crop by tine, but the target planted crop is in a state of falling down for some reason in addition to being upright Can also be guided to the auger while being caused by tine.
Therefore, planted crops that fall from the area of the cutting width to the adjacent area and planted crops that fall from the adjacent area to the area of the cutting width can be caused by the tine.
In particular, when pulling back planted crops that have fallen from the area of the cutting width to the adjacent area, it is better not to hold down the tip side of the crop that has fallen outside the cutting width from the tine position as much as possible. It can be pulled back without it.
If the part of the crop that has fallen to the outside of the cutting width is pressed with a divider, the tip side will be restrained, and it will not be able to be pulled back even if it is hooked with a tine, or the part where the tine is locked There is a risk that the planted crop will be cut and the planted crop on the tip side may not be recovered.
According to the third characteristic configuration of the present invention, the partition plate is configured such that the position of the descending edge portion is the same as the position of the rotation axis of the scraping reel in the operating state, or is positioned rearward. Therefore, even when the tine reaches the lowest point, the descending edge portion of the partition plate is located on the side thereof, and a gap can be secured between the field surface and the descending edge portion.
Therefore, when the planted crop that has fallen to the adjacent area is pulled back by the tine, it is prevented that the planted crop is pressed by the partition plate, and the fallen portion of the planted crop passes through the gap. Return to the cutting width.
As a result, the planted crop that has fallen can be pulled back and cut without being left, and guided to the auger, thereby preventing the occurrence of uncut crops.

  According to a fourth characteristic configuration of the present invention, the feeder is arranged so as to be biased from the center in the longitudinal direction of the auger to the side opposite to the operating portion, and from the feeder among the left and right weed fences. The far side weed ridge is located at a position where the protruding distance protruding inward from the partition plate is larger than that of the other weed fold.

According to the fourth characteristic configuration of the present invention, when guiding the planted crop toward the auger, the planted crop can be efficiently and efficiently guided by the communication unit to the feeder.
In other words, the larger the weed ridge protrusion distance, the greater the amount of lateral guidance, and the larger the protrusion distance of the weed moth farther from the feeder position is proportional to the bias of the feeder. The planted crop can be guided by the allocation, and the planted crop can be guided more efficiently.

Combine left side view Top view of the combine Side view of main part showing divider Plan view of the main part showing the divider Divider perspective view Combine rear view Perspective view showing the drainage cover

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an entire side surface of a normal combine according to the present invention, and FIG. 2 shows an entire plane thereof.

In this combine, a self-propelled machine body 2 provided with a pair of left and right crawler traveling devices 1 is provided with an axial-flow type threshing device 3 and a grain recovery unit 4 arranged in parallel on the left and right sides. A driving unit 5 is provided in front. At the front part of the threshing device 3, a feeder 6 for conveying the harvested crop is connected to the front end of the fulcrum X so as to be swingable up and down. ing.
Therefore, the planted crop is cut by the cutting unit 7 and sent from the feeder 6 to the threshing device 3, and the threshing process is performed, and the grain is collected by the grain collecting unit 4. It is discharged rearward from a discharge port 3a provided at the rear.

The mowing unit 7 has a structure in which a clipper type mowing device 12 and an auger 13 that laterally feeds the harvested crop to the middle of the mowing width are installed over a pair of right and left weed frames 11.
Dividers 20 capable of weeding planted crops in front of the self-propelled aircraft 2 over a predetermined cutting width are provided at the front ends of the pair of weed frames 11 respectively.
The auger 13 is configured to be able to rotate around a horizontal rotation axis b, and the auger 13 has a spiral blade 13 a for lateral feed and a scraping finger that feeds the cut crop that has been laterally fed to the starting end of the feeder 6. 13b (see FIG. 3).
The feeder 6 includes a scraping conveyor 14 in which a conveyor bar 14b is horizontally connected across the left and right chains 14a that are wound in a longitudinal direction, and the harvested crop fed by the scraping fingers 13b is fed to the feeder 6. It is scraped and conveyed along the bottom surface and is supplied to the front end of the threshing device 3.
The feeder 6 is disposed so as to be biased to the left side of the self-propelled machine body (the side opposite to the operation unit 5) from the center in the longitudinal direction of the auger 13 because of being provided in front of the threshing device 3.

  A hydraulic cylinder 15 is installed between the front part of the main frame 8 and the lower part of the feeder 6 in the self-propelled aircraft 2, and the cutting part 7 together with the feeder 6 swings around the fulcrum X by the expansion and contraction operation of the hydraulic cylinder 15. It can be moved up and down. Above the front part of the mowing unit 7, a scraping reel 16 for scraping and raising the planted crop backward is provided.

The scraping reel 16 is supported on a front portion of a pair of left and right support arms 17 that can swing up and down around a fulcrum a via a support bracket 18. A gas damper 19 is attached between the support arm 17 and the weed frame 11. The gas damper 19 assists when the scraping reel 16 is swung up and down by an operation lever (not shown), and the scraping action height of the scraping reel 16 can be easily changed.
Also, the support bracket 18 can be slid along the support arm 17 to adjust the scraping action position back and forth.

The scraping reel 16 includes a rotating support shaft 22 horizontally supported by the left and right support brackets 18, a pair of regular square reel frames 23 connected to the left and right of the rotating support shaft 22, and left and right reel frames 23. Four tine mounting shafts 24 horizontally supported at the four tops of the tine, a plurality of tines 25 mounted in parallel at a fixed pitch on each tine mounting shaft 24, and a reel axis P of the reel frame 23 The auxiliary reel frame 26 having a square shape and the like, which is supported so as to be rotatable about an eccentric shaft core Q which is shifted rearward by a set distance.
The auxiliary reel frame 26 is disposed only on the right side of the right reel frame 23.
The auxiliary reel frame 26 and the pair of reel frames 23 are formed in substantially the same outer shape.

A rotation restricting arm 27 is integrally projected backward from the right end of each tine mounting shaft 24, and the free end of the turn restricting arm 27 is pivotally connected to each top portion of the auxiliary reel frame 26.
The distance from the axis R of each tine mounting shaft 24 to the free-end pivot point S of the rotation restricting arm 27 and the direction of the imaginary line connecting both the points R and S are from the reel axis P to the eccentric axis Q. And the direction of the imaginary line connecting both axes P and Q, the reel axis P, the eccentric axis Q, the axis R of the tine mounting shaft 24, and the free end of the rotation restricting arm 27 The pivot point S is a fulcrum of the parallel quadruple link.

Accordingly, when the reel frame 23 is rotated around the reel axis P, the auxiliary reel frame 26 rotates around the eccentric axis Q following this, so that the tine mounting shaft 24 revolves around the reel axis P. However, it is rotated synchronously around the axis R in the opposite direction, so that the tine mounting shaft 24 is always maintained in a constant rotational posture.
Note that the scraping reel 16 is rotationally driven by a pulley G3 provided at the left end portion of the rotary support shaft 22, a driving pulley G1, a driving belt G2 provided over both pulleys G3 and G1, and a driving belt G2. This is implemented by transmitting a rotational force from the drive system by a transmission mechanism including a pair of tension pulleys G4 that are in contact with each other.

  As shown in FIGS. 3 to 5, the divider 20 is provided on a pair of partition plates 30 that are opposed to each other on both the left and right sides of the scraping reel 16, and provided on the inner surface of the partition plate 30. And a weed culm 31 for guiding a crop within the cutting width.

The partition plate 30 is formed in a substantially rectangular shape in which the bottom end side of a substantially right triangle is chamfered in a side view of the self-propelled aircraft 2 (see FIG. 3).
The rear edge portion 30A is provided with a flange portion 30a bent in the thickness direction, and the divider 20 is integrally attached by fixing the flange portion 30a to the flange portion 11a of the weed frame 11 with screws. . The flange portion 30a extends in a bent state at the upper end portion in the longitudinal direction, and is fixed to the upper edge portion of the weeding frame 11 with screws.

The lower edge portion 30B is formed substantially at right angles to the rear edge portion 30A, and is provided with a reinforcing flange portion 30b. The reinforcing flange portion 30b is formed in a shape narrower toward the tip side. Further, the rear end side of the reinforcing flange portion 30 b extends to the lower edge portion side of the weed frame 11, and the extended end portion is fixed to the weed frame 11 with screws.
The upper edge portion 30C is formed with a downward slope forward from the upper end of the rear edge portion 30A, and is provided with a reinforcing flange portion 30c bent in the thickness direction. The upper edge portion 30C is formed to have a steep slope as compared with the upper surface portion of the weed frame 11 to which the upper end bent portion of the flange portion 30a is attached.
The reinforcing flange portion 30c is also formed narrower toward the distal end side, like the reinforcing flange portion 30b.
The lower edge portion of the upper edge portion 30C is a tip vertex portion (corresponding to the top portion of the characteristic configuration of the present invention) 30D of the partition plate 30, and the descending edge portion of the descending slope extends from the tip vertex portion 30D to the lower edge portion 30B. 30E. The tip apex 30D and the descending edge 30E are both formed in a curved shape so as not to be sharp. As an example, a round bar m is welded from the lower end portion of the upper edge portion 30C to the front end portions of the tip vertex portion 30D, the descending edge portion 30E, and the lower edge portion 30B to finish the curve (see FIG. 5).
The front and rear positions of the descending edge 30E are set so as to be directly below the rotation axis P of the scraping reel 16 in the operating state (see FIGS. 1 and 3).

The weed cage 31 is made of a round bar, the tip 31a is fixed to the inner surface of the divider near the tip apex 30D, and the rear end 31b is directed toward the rotation axis b of the auger 13. It extends to the vicinity of the spiral blade 13a. As can be seen in the figure, it is in a slightly inclined state.
An intermediate portion of the weed ridge 31 is fixed to a bracket 32 provided on the partition plate 30.
The length of the bracket 32 is different between the left and right dividers 20. Specifically, the bracket 32 on the right side of the self-propelled machine body (the one far from the feeder 6) is formed longer than the other. Accordingly, the projecting distances L1 and L2 from which the weed fence 31 protrudes from the partition plate 30 are such that the projecting distance L1 of the weed fence 31 on the right side of the self-propelled aircraft is larger than the projecting distance L2 of the other weed fence 31. (See FIG. 4).

  In addition, on the inner surfaces of the left and right partition plates 30 that are opposite to each other, the weed culm 31 that guides the planted crop within the cutting width inward is provided as described above. A strip-shaped guide plate 33 for guiding planted crops outside the cutting width to the outside is provided.

On the other hand, a scouring cover 40 is provided at the scouring port 3a of the threshing device 3 so as to cover from the rear.
As shown in FIGS. 6 and 7, the waste cover 40 is formed in a width dimension that matches the width of the waste outlet 3 a, and the support pillars 3 b provided on the left and right edge portions on the rear surface of the threshing device 3. In addition, the mounting flange portion 40a of the evacuation cover 40 is attached along with the screws fixed together.
The evacuation cover 40 is configured by integrally welding left and right side plate portions 41, a top plate portion 42 extending over the upper edge portions of the side plate portions 41, and a rear plate portion 43 extending over the rear edge portions of the side plate portions 41. is there. The mounting flange portion 40a is formed so as to be bent at right angles inward from the front edge portions of the left and right side plate portions 41.
In the following description, the left and right descriptions refer to the left side as the left and the right side as the right with respect to the front of the main frame 8.

The side plate portion 41 is formed in a trapezoidal shape in which a side view shape is chamfered at a rear upper corner in a vertically long rectangular shape.
The left and right side plate portions 41 are formed such that the upper edge portions are positioned at the same height, while the lower edge portion is formed such that the right side plate portion 41R is positioned below the left side plate portion 41L. It is.
The lower end portion of the left side plate portion 41L is located between the lower edge portion of the discharge port 3a and the lower edge portion of the right side plate portion 41R.

In addition, a guide inclined plate 44 having the same width and a downward slope on the right side is connected to the lower edge portion of the left side plate portion 41L.
The lower end portion of the guide inclined plate 44 reaches the vicinity of the position immediately below the central portion of the width of the discharge port 3a.

  The rear plate portion 43 has a rectangular rear plate chamfered portion 43a that extends over the chamfered portions of the both side plate portions 41, a rectangular rear plate hanging portion 43b that hangs downward below, and the guide slope below the rear plate hanging portion 43b. A triangular rear plate lid 43c extending over the plate 44 is integrally provided (see FIG. 7).

Since the upper space V1 of the guide inclined plate 44 is covered with the left side plate portion 41L on the left side and the rear plate lid portion 43c on the rear side, it is discharged from the discharge port 3a into the upper space V1. The waste can be guided to fall on the upper surface of the guide inclined plate 44.
Further, the waste is guided to the inclined downstream space V2 adjacent to the right side of the guiding inclined plate 44 and falls onto the ground while sliding on the upper surface of the guiding inclined plate 44 along the downward gradient.
At that time, the waste that slides down the guide inclined plate 44 is guided downward by hitting the right side plate portion 41R, and is prevented from scattering in a wide range.

  According to the evacuation cover 40, the openings 40A are secured below and behind the inclined downstream space V2, so that the evacuation is difficult to clog and is discharged in a state of being prevented from scattering over a wide area. Can do. Further, it is possible to more easily perform internal maintenance work and the like through the rear opening 40A.

According to the ordinary combine of the present embodiment, the tip apex 30D is located at a position higher than the lower edge 30B of the partition plate 30 (a position away from the field). It is easy to prevent 30D from being stuck and obstructing travel.
In addition, since the gradient of the weed culm 31 is nearly horizontal, the displacement of the contact position with the planted crop to be guided can be reduced, the posture of the planted crop is hardly disturbed, and the protruding distance of the left and right weed culm 31 Planted crops can be efficiently guided to the auger 13 by making L1 and L2 different or by arranging the rear end of the weed pod 31 toward the rotation axis b of the auger 13.
Furthermore, even if the divider size is shortened, the slope of the weed basket 31 does not become steep, so that the combine can be made compact.
In addition, the planted crop that has fallen can be pulled back into the cutting width without being left behind, and can be guided to the auger 13 to prevent the occurrence of uncut cutting.

[Another embodiment]
Other embodiments will be described below.

<1> The weed basket 31 is not limited to the round bar described in the previous embodiment, and may be composed of, for example, a pipe or a strip.
<2> The scraping reel 16 is not limited to the shape described in the previous embodiment, and may be, for example, a polygon that is a pentagon or more, a circle, or the like other than a quadrangle.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

  The said combine can be utilized for the normal type combine which mounts a grain tank and an unloader as a grain collection | recovery part, or the hopper and bagging apparatus for bagging.

2 Self-propelled machine body 6 Feeder 12 Cutting device 13 Auger 16 Scraping reel 20 Divider 30 Partition plate 30B Lower edge 30D Tip apex (corresponding to the top of the characteristic configuration of the present invention)
30E Descending edge portion 31 Weeding rod 31a Tip portion of weeding rod 31b Rear end portion of weeding rod b Rotating shaft core of auger L1 Projection distance P Reel axis

Claims (4)

A pair of left and right dividers capable of weeding a planted crop in front of the self-propelled aircraft over a predetermined cutting width, and a planting that can be driven to rotate around a horizontal axis of rotation and is divided between the pair of dividers. A scraping reel capable of scraping a crop, a harvesting device capable of harvesting a planted crop scraped by the scraping reel, a rotational drive around a horizontal rotation axis, and a harvesting device A normal combine that is equipped with an auger capable of transporting the crops to the feeder
The divider includes a pair of partition plates arranged to face each other on both the left and right sides of the scraping reel, and a weed pod provided on the inner surface of the partition plate to guide the planted crop into the cutting width. It is configured with
The partition plate includes a top portion in which an upper and lower middle portion of a front edge portion projects forward, and a downward edge portion having a downward slope from the top portion to a lower edge portion,
The branch weed is a normal combine that is arranged in a front-rear direction so that a front end portion is fixed near the top portion and a rear end portion is located near the auger.   2. The ordinary combine according to claim 1, wherein an extension line on a rear end side of the weed shear is arranged so as to intersect a rotation axis of the auger.   3. The normal state according to claim 1, wherein the partition plate is configured such that the position of the descending edge is the same as the position of the rotation axis of the scraping reel in the operating state or a rearward position. Type combine.   The feeder is arranged so as to be biased from the center in the longitudinal direction of the auger to the side opposite to the operation unit, and among the left and right weed folds, the weed fold far from the feeder is the partition The normal type combine according to any one of claims 1 to 3, wherein a protruding distance protruding inward from the plate is larger than that of the other weed pod.

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