JPH10313639A - Rake-in and carrying part of combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rake-in and carrying part of combine in a structure for stabilizing a rake-in position at the time of raking in and carrying cut grain culms. SOLUTION: A rake-in body 24 on the outermost side on an already cut ground side in the rake-in bodies 23 and 24, around rake-in belts 29 and 31 are wound on the outer peripheral side where adjacent sides are opened in a chevron shape toward a front part at a prescribed angle provided in a pre- processing part 5 freely vertically movably attached to the front part of a traveling machine body is made horizontally movable to an open posture O for moving the tip side to the outer side and the closed posture of an initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine transporting unit provided with a scraping body in which a scraping belt for rolling and transporting a harvested grain stalk rearward is provided in a pretreatment unit.

[0002]

2. Description of the Related Art Conventionally, a pre-processing unit which is attached to the front of a traveling body of a combine so as to be able to ascend and descend is provided with a raking belt for wrapping a raking belt around an outer peripheral side and raking and transporting a harvested grain culm rearward. There has been a configuration in which the adjacent side of the scraping body is supported and provided in a state of opening in a C-shape toward the front at a predetermined opening degree.

[0003]

[0005] However, the work at the ridge in the case of the reaping work in which the reaping is performed while sequentially turning inward from the outer periphery of the field, and the middle splitting operation in which the reaping work is started from a substantially central portion of the field. In order to prevent the crawler traveling device from damaging the ridge or the right culm row due to stepping on the ridge or the right culm row, etc., one of the right (cutted side) cereal culm row is used. The body is positioned so as to be squeezed and transported by the squeezing belt of the outermost squeezed body on the right side, but in the above state, the rightmost grain stem to be squeezed and conveyed is a unit of the squeezed belt. It is squeezed and transported in a state where it is overturned by necessity, it is squeezed and transported on the upper side compared to other grain stems,
There were drawbacks such as the position of the tip relative to the handling cylinder was changed, and unhandled portions occurred.

[0004]

In order to solve the above-mentioned problems, a squeeze transport section of a combine according to the present invention has a pre-processing section 5 attached to the front of a traveling body 1 so as to be able to move up and down. Scraping belts 29 and 31 are wound around the outer periphery, and raked bodies 23 and 24 for squeezing and transporting the harvested grain stalks rearward are provided. The adjacent sides of the raked bodies 23 and 24 have a predetermined opening degree. In the combine where the scraping bodies 23 and 24 are supported in a state of opening in a C-shape toward the front, the outermost scraping body 24 on the cut ground side is used.
The first feature is that the front end is supported so as to be movable left and right in an open posture O in which the distal end moves outward and a closed posture S in an initial state.

An operating lever 38 for moving the scraping body 24 is protruded from the scraping body 24, and a positioning portion 42 for positioning and fixing the operating lever 38 so that the scraping body 24 is fixed in the open position O is provided. This is the second feature.

A third feature is that an elastic member 46 is provided between the squeezing body 24 and the preprocessing unit 5 so that the squeezing body 24 moves elastically in the opening posture direction.

[0007]

1 and 2 show a main part side view and a main part plan view of a pre-processing part of a combine to which the present invention is applied. A pre-processing unit 5 is supported in front of the traveling machine body 1 supported by the traveling device (crawler) 2 so as to be able to move up and down around the horizontal axis 4, and a handle cylinder 7 a is provided behind the pre-processing unit 5.
A threshing unit 7 provided with At this time, the pre-processing unit 5 includes a pre-processing frame 6 below,
A mowing part 11 composed of a cutting blade 10 and the like, a plurality of dividers 8, a grain stalk raising device 9, a scraping transporter 14, a handling depth transporter 16, and scraping parts 12a and 12b having a configuration to be described later. Have been.

The pre-processing frame 6 is provided with a horizontal frame 6c disposed in front thereof, and protrudes forward from both left and right ends of the horizontal frame 6c so as to protrude forward.
b, a center divider frame 6a positioned substantially at the center between the side divider frames 6b, and a middle divider frame 6d positioned substantially at the center between the center divider frame 6a and the side divider frame 6b.
Are provided so as to protrude forward from the horizontal frame 6c, respectively.

When the traveling body 1 travels by the traveling device 2, the culm is first vegetated by the divider 8, and the falling culm is raised by the raising device 9. After that, the grain stalk is cut by the cutting blade 10, and the cut grain stalk is scraped by the scraping units 12 a and 12 b in an operation described later, and the scraped grain stalk forms the scraping transport body 14. The bodies 17a and 17b, the stem transporters 18a and 18b, and the stock transport chains 19a and 19b take over and are fed rearward along a Y-shaped scraping path in an upright state to join. Then, the combined grain culm is transferred to the handling depth transfer body 16, conveyed with the spikes tilted toward the center of the machine body, transferred to the feed chain 26 in a substantially lying state, and fed to the threshing unit 7.
And threshing.

Next, the structure of the scraping portions 12a and 12b will be described. As shown in FIG. 2, the scraping portion 12a is located on the left side of the center divider frame 6a (the uncut side).
In addition, the scraping portions 12b are provided on the right side (cut side) of the center divider frame 6a, and the scraping wheels (star wheels) 27 and 28 corresponding to the left and right with the middle divider frame 6d as a center. A scraping unit 23 provided above the star wheel 27 and wound around the outer periphery with a scraping belt 29 for scraping and transporting the harvested grain stem rearward; and a scraping unit 23 provided above the star wheel 28 and scraped outward. And a scraping unit 24 around which a catch belt 31 is wound.

At this time, a pair of left and right scraping units 23, 2
4 is a state in which the adjacent side is opened in a C-shape with a predetermined opening toward the front, that is, a state in which the scraping belt 29 and the scraping belt 31 are opened in a C-shape with a predetermined opening toward the front. Supported. On the other hand, the star wheels 27 and 28 are rotatably supported by the support frame 21 projecting from the horizontal frame 6c, and are provided on the uncut side (left side in plan view) of the scraping portion 12a. A drive pulley 20 is provided on the upper surface of each of the star wheels 28 of the scraping portion 12b on the cut side (the right side in plan view), as shown in FIGS.

A stock carrier chain 19a or 19b is wound around the two drive pulleys 20, respectively.
When the stock carrier chains 19a and 19b are driven in the Y direction, the star wheel 2 of the left scraping portion 12a is driven.
7 and the star wheel 28 of the right scraping portion 12b are driven to rotate in the X direction. Further, the star wheels 27 and 28 of the left scraping portion 12a and the star wheel 27 of the right scraping portion 12b have a spur gear shape having a plurality of teeth 30. The star wheels 27 and 28 are engaged.

When the star wheel 27 of the rake unit 12a is driven to rotate, the engagement causes the rake unit 1 to rotate.
The star wheel 2a and the star wheel 27 of the scraping unit 12b are respectively driven to rotate in the X direction. The star wheel 28 of the scraping portion 12b has a large number of projections 32 curved so as to have a receding angle, is not connected (engaged) with the other three star wheels, and is driven independently. It is configured.

On the other hand, above the star wheels 27 and 28, as shown in FIGS.
In each of the star wheels 2 and 3, the pulley 40 is rotated integrally with the star wheels 27 and 28 in the covers 36 of the third and the fourth wheels 24.
7 and 28, and are provided so as to be supported by the rotation support shafts 33.
Further, the scraping units 23 and 24 (the cover 36) themselves are rotatably supported by the rotation support shaft 33 and are attached to the support frame 21 side.

At this time, in front of the pulleys 40 in the cover 36, free rotation pulleys 34 are rotatably mounted on the cover 36 and supported by the cover 36, respectively.
0 and the free rotating pulley 34 and the projection 29 at regular intervals.
The scraping belt 29 or 31 having the protrusion a or 31a is wound around, and the scraping belts 29 and 31 rotate with the rotation of the star wheels 27 and 28.
The cover 36 is composed of a base portion 36a covering the lower side of each pulley 40, 34 and a cover portion 36b covering the upper side. The cover 36, the free-rotating pulley 34, the scraping belt 29 or 31, the pulley 40, etc. The scraping unit 23 or 24 is constituted by the above.

The star wheel 27 of the scraping portion 12a,
The base unit 36a is fixedly attached to the attachment unit 21a of the support frame 21 by bolts 35 shown in FIGS. Has been
The scraping unit 2 above the star wheel 28 of the scraping unit 12b (that is, the outermost star wheel 28 on the cut ground side)
Reference numeral 4 denotes a case where the bolt 35 is not provided and the base portion 3
6a is in contact with the mounting portion 21a of the support frame 21 and is positioned in the vertical direction, but is not fixed,
The star wheel 28 is swingable about a rotation shaft 33.

Next, the star wheel 2 of the scraping portion 12b
The mounting structure of the upper scraping unit 24 will be described. The scraping unit 24 is swingable about the rotation support shaft 33 with respect to the star wheel 28 (pulley 40) and the support frame 21 by the above-described structure.
As shown in FIGS. 3 and 5, the swaging unit 24 is swung so that the opening degree of the pair of the scraping belts 29 and 31 of the scraping unit 12 b is changed. The leading end side of the loading unit 24 (the scraping belt 31) swings.

On the other hand, from the cover 36 of the scraping unit 24, an operation lever 38 which can swing up and down within a predetermined range is provided to protrude outward, and the operation lever 38 is fixed to the support frame 21. The swing range of the raking unit 24 is regulated by the guide hole 41 by being inserted into the guide hole 41 of the lever guide 39. At this time, the raking unit 24 moves the operation lever 38 to the front end of the guide hole 41. When it is positioned, the squeezing belt 29 and the squeezing belt 31 of the squeezing section 12b are in the closed state S in the initial state in which the above-described predetermined opening degree is formed.

When the operation lever 38 is positioned at the rear end of the guide hole 41, the squeezing unit 24
The leading end side swings outward so that the opening degree of the first scraping belt 29 becomes larger than the predetermined opening degree, but the rear end of the guide hole 41 is bent downward to operate the operating lever 38. And a positioning portion 42 that engages with
By moving the operation lever 38 to the rear end of the guide hole 41 and swinging downward and engaging the operation lever 38 with the positioning portion 42, the scraping unit 24 is fixed in the open position O.

On the other hand, an arm 43 is provided protruding rearward from the cover 36, and a tension spring 46 as an elastic member is provided between the arm 43 and the support arm 44 protruding from the support frame 21. The tension spring 46 biases the squeezing unit 24 to the closed position S so as to resiliently move in the opening position O (against the biasing force of the tension spring 46). That is, when the engagement between the operation lever 38 and the positioning portion 42 of the guide hole 41 is released, the scraping unit 24 causes the operation lever 38 to elastically contact the front end of the guide hole 41 by the urging force of the tension spring 46. Then, the operation lever 38 automatically returns to the closed position S, and is positioned in the closed position S by the contact between the operation lever 38 and the front end of the guide hole 41.

The combine of the present invention having the above-described structure can be used in the reed-cutting operation for cutting the grain stalks while sequentially turning inward from the outer periphery of the field, or from the center of the field. In the middle splitting operation for starting the mowing operation, the traveling device 2 prevents damage to the ridges and the right culm rows due to stepping on the ridges and the right culm rows, and the like, in order to prevent damage to the ridges and the right culm rows. The scraping unit 24 is set to the open position O, and the scraping unit 12b scrapes and transports one row of the grain culm row on the right side (the side of the cut area) more than in the normal operation (1 row). Is positioned between the scraping units 23 and 24 extra) to start the mowing operation.

At this time, the rake unit 24 of the rake unit 12b
Is in the open position O, the inconvenience such as pushing down the uncut mushroom culm in front at the tip portion of the scraping unit 24 or the like is prevented,
The flow of the cereal stalk becomes smooth, and the rightmost cereal culm conveyed by squeezing is not tilted more than necessary, and the other squeezing belt 2
The grain stalks 9 and 31 are squeezed and conveyed by the squeezing belt 31 at substantially an inclination.

For this reason, the scraping belt 3 of the scraping portion 12b
1, the raked and conveyed position of the grain stalk conveyed and squeezed and conveyed by the other squeezing belts 29 and 31 is substantially the same as the stalked and conveyed position of the cereal stalk conveyed by the other squeezing belts 29 and 31. Is stable, the variation in handling depth is small, and the remaining unhandled portion is reduced. However, when the harvested culm is a short culm, it is more effective because it cannot be deeply handled. In the above-mentioned mowing work state, the scraping unit 1
Although a relatively large amount of grain culm is sent and scraped into 2b, the cut grain culm is easy and smooth because the opening between the scraping belts 29 and 31 is larger than in the case of the closed posture S. Is transferred to the rake section 12b, and the rake belt 2 at the time of rake transfer is
The impact on the protrusions 29a, 31a of the 9, 31 is alleviated, and the grain stalks are scraped in order.

On the other hand, when the harvesting operation is performed in a state other than the above-mentioned operation state, the culm 12b has a smaller amount of the cut culm than the above-mentioned state.
Is set in the closed position S with high working efficiency, but in this case, the squeezing belts 29 and 3 of the squeezing section 12b are set.
Since the degree of opening between them is relatively small (initial setting value), inconveniences such as culm displacement and spilling do not occur particularly in the case of short culm and the like, and threshing efficiency does not deteriorate.

In this embodiment, the rake unit 24 of the rake unit 12b is elastically set to the closed position S in a state where swinging to the open position O is allowed. In addition to the effect, when a relatively large number of harvested stalks are sent when the scraping unit 24 is in the closed position S, the raked units 24 are resiliently opened to the open position O by the sent stalks.
The stalks are swung in the direction, and the degree of opening between the scraping belts 29 and 31 increases according to the amount of the cut culm, so that the cut culm can be reliably and easily scraped.

The scraping unit 24 of the scraping section 12b
The operation lever 38 is not provided on the cover unit 36 as shown in FIGS.
a) and a mounting hole 47 for inserting the bolt 35 into the mounting portion 21a of the support frame 21 that supports the scraping unit 24 (the star wheel 28 facing the scraping unit 24).
And 48, and one or both mounting holes 4 are formed.
7, 48 (the mounting holes 48 in FIG. 5) are elongated holes extending in the swinging direction of the scraping unit 24, and the mounting holes 4
The scraping unit 24 by bolts 35 through 7, 48
May be positioned and fixed in a predetermined posture (open posture O or closed posture S).

That is, in the range of the above-mentioned long hole, the scraping unit 24
Is rocked, and the bolt 35 is tightened at an arbitrary position in the long hole to fix the scraping unit 24, so that the outermost scraping unit 24 on the cut ground side moves outward at the tip end side. It is possible to swing left and right between the posture O and the closed posture S, and the same effect as in the above embodiment can be obtained. Further, one or both of the mounting holes 47 and 48 are provided in a plurality in the swinging direction of the raking unit 24, and the fixing position by the bolt 35 is changed so that the raking unit 24 is opened.
And the closed posture S.

[0028]

According to the structure of the present invention constituted as described above, the plurality of grain culm rows on the cut ground side (right side) are connected to the outermost raking belt on the cut ground side by the scraping belt. When performing a reaping operation such as squeezing and transporting with a squeezing belt opposed to the squeezing belt, the outermost squeezed body on the slashed ground side is set to the open position, so that the squeezed body is on the slashed ground side. The outermost grain stalks are not brought into contact with each other, and the grain stalks of the grain stalks are prevented from being tilted more than necessary. This has the same effect as the inclination of the grain stalk conveyed by scraping, so that the position of the spike tip with respect to the handling cylinder is stable and the variation in handling depth is reduced.

In particular, the structure in which the scraping body is fixed in the open position by the operation lever can easily be changed to the open position or the closed position of the scraping device, and the workability is good. Further, when the scraped body is supported by the elastic member so as to move elastically in the opening posture direction, a relatively large number of harvested grain culms are sent when the scraped body is in the closed posture. Even so, since the scraped body is elastically moved in the opening posture direction, the scraped culm can be easily and smoothly scraped.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a pre-processing unit of a combine.

FIG. 2 is a plan view of a main part of a pre-processing unit of the combine.

FIG. 3 is a perspective view of a scraping unit portion.

FIG. 4 is a sectional side view of a main part of the scraping unit.

FIG. 5 is a plan view of a main part of the scraping unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 5 Preprocessing part 23 Scraping unit (scraping body) 24 Scraping unit (scraping body) 29 Scraping belt 31 Scraping belt 38 Operation lever 42 Positioning part 46 Tension spring (elastic member) O Opening posture S Closed posture

Claims (3)

[Claims] 1. A pre-processing unit (5) in front of a traveling body (1).
Is mounted so as to be able to move up and down freely, and scraping belts (29) and (31) are wrapped around the pre-processing portion (5) on the outer peripheral side to scrape and transport the harvested grain culm backward. 24), and the scraping members (23), (2) are opened in a state where the adjacent sides of the scraping members (23), (24) are opened forward in a C-shape at a predetermined opening degree.
In the combine where 4) is supported, the outermost scraped body (24) on the cut ground side is moved left and right between an open position (O) in which the tip side moves outward and a closed position (S) in the initial state. Combine squeeze transport unit that is supported as possible. 2. An operation lever (38) for moving the scraping body (24) is protruded from the scraping body (24), and the scraping body (24) is provided.
Operating lever (38) so that is fixed in the open position (O)
2. The combine conveying device according to claim 1, further comprising a positioning portion (42) for positioning and fixing the moving portion. 3. An elastic member (46) is provided between the side of the scraping body (24) and the side of the pretreatment section (5) so that the scraping body (24) moves elastically in the opening posture direction. A squeeze transport unit for the combine according to claim 1 or 2.