JP3280152B2 - Dust suction unit structure of threshing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for suctioning dust from a threshing machine.

[0002]

2. Description of the Related Art Conventionally, a threshing machine having a processing cylinder in addition to a handling cylinder is provided with a swinging sorting body from the lower side of the handling cylinder toward the rear, and a body case located behind the sorting body is closed. A dust exhaust suction fan is provided beside the sorting body end, and the exhaust dust is sucked by the suction fan and discharged to the outside of the machine body.

In the dust suction fan, a suction hole is formed in the body side plate, and a fan case is provided in an overhanging state so as to cover the suction hole on an outer surface of the body side plate, and suction is performed in the overhanging fan case. The fan is housed.

[0004]

Therefore, the dust discharged from the end of the swing sorting body is sucked directly from the suction hole of the body side plate, and at the time of suction, the end of the swing sorting body and the suction fan are removed. The body side plate forming the suction hole periphery directly separates the space between them, and the ability to suck the dust from the end of the sorting body is reduced by the side plate on the suction hole periphery and weakened, and the other side facing that much There is a drawback that the paddy is directly sucked from the processing drum disposed in the hopper and discharged out of the machine body.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a machine body side plate is extended above a terminal end of a sorting unit of a threshing machine having both a handling cylinder and a processing cylinder, outside the width side edge of the sorting unit. The lower surface of the fuselage side plate has an inwardly sloping inclined surface, a suction hole for dust is formed in the side plate, and a suction case containing a suction fan is provided outside the suction hole. The present invention is to provide a dust suction unit structure for a threshing machine.

Further, according to the present invention, a machine body side plate is formed so as to protrude outward from a width side edge of a sorting unit above a terminal end of a sorting unit of a threshing machine having both a handling cylinder and a processing cylinder to form an overhang space. At the same time, a suction case is attached to the inner surface of the body side plate to be located in the overhang space, and the upper corner of the suction case is cut diagonally and the straw is transported from the feed chain through the outlet side plate of the handling chamber. It is an object of the present invention to provide a dust suction unit structure of a threshing machine configured so as not to interfere with the above.

[0007]

According to the present invention, the harvested grain culm is threshed by the handling cylinder, sorted by the sorting section to collect the grains, and the dust is sucked and discharged outside the machine by the suction fan at the end of the sorting section. At this time, above the terminal end of the sorting unit, the dust is first sucked into the overhang space along the inclined surface of the lower side surface of the body side plate, and then the suction hole of the overhanged body side plate. The air is sucked into the suction case by the suction fan and discharged to the outside of the machine.A smooth suction angle is taken by the overhanging body side plate and the downward inclined surface, and the suction flow of the dust is smoothed. The suction fan can be reached, and furthermore, the suction fan is located on the opposite side of the processing cylinder and can be separated from the processing cylinder by the overhang of the machine body side plate, so that the suction fan does not suck the paddy from the processing cylinder. hand It is intended to play a real aspiration dust removing function.

According to the present invention, since the upper side of the suction case is cut obliquely in the case where the body side plate is extended outward and the suction case is disposed in the overhanging space, the suction case is conveyed from the feed chain. When the culm is threshed in the handling room and is carried out from the exit side plate of the handling room,
The straw transport path can smoothly transport the straw without interfering with the suction case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall side view showing a combine A having a feed chain structure according to the present invention.
Is a machine a capable of traveling by a crawler traveling section B
A threshing unit C and a sorting unit D are provided on the upper left side, and a cutting unit E is mounted in front of the threshing unit C so as to be able to move up and down. G and a paddy receiving section H are provided, and a waste straw processing section I is provided at the rear end of the body a.

In the threshing unit C, as shown in FIG. 2, the handling cylinder 1 is rotatably mounted with the axis line directed in the front-rear direction of the handling chamber C '.
A processing cylinder 2 is rotatably mounted on the right rear position of the handling cylinder 1 with the axis line extending in the front-rear direction, and the processing cylinder 1 and the processing cylinder 2 are disposed substantially parallel to the left-right width direction in plan view. ing.

As shown in FIG. 2, the sorting section D is provided with a carrot 3 at the front, a swingable swinging body 4 at the rear, and a wind-selectable grain below the body. The first gutter and the second gutter for collecting the grains and the second grain are arranged and configured.
And 8 indicate the first and second conveyors provided for each gutter.

As shown in FIG. 2, the cutting unit E pivotally supports the rear end of the cutting frame 9 at the front of the machine body a so as to be vertically rotatable, and is vertically movable by a lifting hydraulic cylinder. 9 Weeding board 1 sequentially from the front end to the rear end
1, the raising tine 12, the cutting blade 13, and the raking body 14 are arranged.

The operating section F is provided on a step plate 16 protruding from the right front edge of a substantially flat chassis 15 constituting a part of the body a, and an operation column standing on the step plate 16.
An operation lever 18 protrudes from 17.

As shown in FIG.
15 is disposed behind the step plate 16 protruding from the chassis, that is, to the traveling section B, threshing section C, sorting section D, reaping section E, and waste straw processing section I via an interlocking mechanism. It is configured to transmit power.

In the combine A configured as described above, the gist of the present invention resides in the structure of the suction fan 19 for discharging dust disposed above the end of the swinging sorter 4 of the sorting unit D.

That is, the swinging sorter 4 constituting the sorting section D disposed in front of the suction fan 19 is composed of a chaff sheave 20 having a large number of fins and a mesh-like sieve 21 disposed below the chaff sheave 20. Above the sieving line 22 located at the end of the swing sorting body 4, a certain space, that is, the overhang space S is held from the line L on the width side edge of the swing sorting body 4 as shown in FIG. The fuselage side plate 23 extends outward.

Further, the overhang position is provided on the side opposite to the side where the processing cylinder 2 is located, and the lower surface of the machine body side plate 23 holding the overhang space S has an inwardly inclined surface having a downward slope of about 45 degrees. 24.

A suction hole 25 for sucking dust is formed in the overhanging body side plate 23 with a predetermined size.
Further, a suction case 26 protrudes outside the suction hole 25.

The suction edge 28 of the machine body side plate forming the peripheral edge of the suction hole 25 is formed to have a smaller diameter than the outer peripheral edge of the suction case 26.
A suction fan 19 is housed in the suction case 26, and a discharge cylinder 27 is provided in a lower part of the suction case 26 in a diagonal direction to communicate therewith.

The overhanging body side plate 23 is thus formed.
Since the suction case 26 protrudes, the distance between the processing cylinder 2 and the suction fan 19 is separated by the overhang space S.
Since there is no possibility that the suction fan 19 will suck the paddy carried into the processing drum 2 and the lower surface of the overhanging machine body side plate 23 has an inclined surface 24 of about 45 degrees, the swing sorting body 4
It is easy for dust to flow smoothly from the terminal end portion into the overhanging space S, so that it is easy to be sucked from the overhanging space S by the suction fan 19, and the suction edge 28 at the peripheral edge of the suction hole 25 is unlikely to hinder dust suction. Has an effect. Further, since the body side plate 23 is overhanging, the internal space is widened by that amount, and it is also possible to easily secure a straw transfer passage that is transferred from the outlet side plate 29 of the handling room C 'by the feed chain 30.
This contributes to the downsizing of the entire aircraft.

Further, the positional relationship between the suction fan 19 and the processing drum 2 will be described in more detail. The processing drum 2 is housed in a processing drum case 2-2, and the inner wall of the case 2-2 has a dust discharge. A hole 2-3 is provided, and a discharge wing 2-1 is protrudingly provided at a position corresponding to the dust discharge hole 2-3 at the end portion of the processing cylinder 2.
The second kernel treated by the method falls through the lower mesh 2-4 to the lower rocking sorter 4, and the waste chips and the like remaining on the mesh are removed in the terminal direction by the screw blades of the processing drum 2. It is configured to be conveyed and discharged by the discharge blades 2-1 through the exhaust holes 2-3 onto the sieve line 22.

As shown in FIGS. 3 and 4, the dust holes 2-3 have a positional relationship with the suction holes 25 of the suction fan 19. The other part is dropped on the oscillating sorter 4 or the sieve wire 22 to be sorted and sucked by the suction fan 19.

The processing cylinder case 2-2 below the processing cylinder 2 is provided with an opening 2-5 which opens toward the rear of the swing sorter 4, and the opening 2-5 is provided at the bottom. Shaking sorting body 4 facing
Suction fan that is formed in the horizontal direction
The opening direction of the suction hole 25 is different from that of the 19 suction holes 25, and the danger of sucking the grains from the processing cylinder 2 by an amount that the position of the suction holes 25 is separated by the overhang space S is avoided.

In the drawing, reference numeral 19 'denotes a rotating shaft of the suction fan 19, which receives power from the prime mover G via a belt, a pulley and the like. Reference numeral 19 ″ denotes a scraping claw for scraping off the scraps and the like at the periphery of the suction hole 25.

FIG. 5 shows another embodiment in which the position of the suction fan 19 is provided on the inner side of the body side plate 23. As shown in FIG. At the end position of the swinging sorting body 4 to be configured, the body side plate 23 projects outward to form an overhang space S, and the overhanging body side plate 23 is formed.
The suction case 26 is attached to the inner surface of the suction case 23. The suction case 26 is disposed so as to fit in the overhang space S. The suction hole 25 formed in the center of the suction case 26 It is located substantially on the same line as the line L on the width side edge of the body 4 or outside thereof.

Further, as shown in FIG.
Is formed at a predetermined interval M between the front end of the handle and the outlet side plate 29 of the handling chamber C 'to form a transfer passage for straw which is transferred by the feed chain from the outlet side plate.

The upper corner portion of the suction case 26 disposed in the overhang space S inside the machine body forms a cutting inclined surface N which is cut obliquely as shown in FIG. The blades of the suction fan 19 are also cut obliquely to form a blade cutting surface n in correspondence with the corner cutting of the suction case 26.

As described above, a constant gap M for the straw conveying passage is maintained between the outlet side plate 29 of the handling chamber C 'and the front end of the suction case 26, and the corner of the suction case 26 is cut in an inclined manner. By doing so, it is possible to reliably secure the straw transport passage, avoid interference between the suction case 26 and the transported straw, improve the straw transport posture, and improve the removal of the straw from the outlet side plate 29 of the handling chamber C ′. Things.

In the other embodiment shown in FIG. 6, the suction case 26 disposed on the upper side of the end of the swinging and sorting body is shifted rearward to maintain the distance M. The rear side plate located at the rear end of the suction case 26 is swelled rearward in order to shift the
A part of the rear part of the suction case 26 is configured to be located in the inside of the suction case 26, and the swelling part 32 is located on the space side below the upper low-speed blade 34 of the cutter 33 as the discharge straw processing part I. Therefore, the suction case 26 extends to the extra space below the low-speed blade 34 of the cutter.

As described above, by shifting the position of the suction case 26 backward, the outlet side plate 29 of the handling chamber C 'and the suction case
26 can be ensured as wide as possible with the front end of the feed chain 30.
To secure a straw transport path, which is advantageous for making the entire machine compact.

Further, behind the outlet side plate 29 of the handling room C ', a fourth gutter inclined plate 35 for forming the fourth gutter T and a vertical plate 36 are integrally connected as shown in FIG. The fourth gutter inclined plate 35 and the vertical plate 36 are provided with a suction case.
Arranged as close as possible to an imaginary line that is tangent to the front arc line of 26 to promote the fall of dust during the transport of waste straw and maintain a sufficient space M with the outlet side plate 29 In this way, a transport path for straw from the exit side plate 29 is secured.

FIG. 8 shows an integrally molded structure of the fourth gutter T disposed below the waste straw chain 37 at the rear of the machine body, and has the following structure.

That is, in the conventional configuration of the fourth gutter, the fourth gutter plate facing the front, the body cover on the right side, the body cover on the left side, and the side of the fourth gutter plate are arranged. A fourth gutter side plate was used, and each member was connected by bolts or spot welding.

In the embodiment of the present invention, the fourth gutter T is all integrally formed, and has the following structure. A central fourth gutter plate 38 is provided substantially at the center toward the front of the sorting unit D,
The central fourth gutter plate 38 has a top plate 39 having a mountain-shaped cross section having an upper and lower inclined surface, a fourth inclined plate 40 integrally connected to the lower end of the front inclined surface of the top plate, and an integral connection to the lower end thereof. A chain recess 42 is provided at the center of the top plate 39 so as to allow the waste straw chain 37 to cross.

On the left side of the central fourth gutter plate 38, a left cover 43 located above the suction case 26 is integrally connected. On the right side of the central fourth gutter plate 38, there is provided a right cover. 4th gutter
44 are integrally connected, and the fourth gutter 44 on the right side is
Right cover 45 that covers the upper part of the right side and a fourth right inclined plate 46 that is integrally connected to the lower end thereof, and a right vertical plate that is integrally connected to the lower end thereof
Consists of 47 and more.

These fourth gutters T are integrally formed of synthetic resin. Therefore, compared to the conventional disassembly of the fourth gutters,
The number of parts and the number of fastening parts are reduced and the weight is reduced, and the assembling is simple, since the integrally formed fourth gutter T is placed from above, and the incompatibility of the parts does not occur. It has an effect, and furthermore, the shape can be integrally formed into a shape in which dust and paddy do not accumulate, so that there is an effect that inconveniences caused by residual dust and paddy can be eliminated.

[0037]

According to the present invention, according to the first aspect of the present invention, the body side plate projects outward, the lower surface of the projecting side plate is inclined, and a suction case is attached to the side plate via a suction hole. Since the overhanging body side plate and the downwardly inclined surface can form a smooth suction angle of the dust discharged from the swing sorting body end, the suction flow of the dust can smoothly reach the suction fan. It has the effect, and furthermore, since the distance between the suction fan and the processing drum can be made large by the overhang of the machine body side plate, it is difficult for the suction fan to suck the paddy from the processing drum, and a reliable suction and dust discharge function can be achieved. Has an effect.

In the case of the suction case attached to the inside of the overhanging body side plate, the upper corner is cut obliquely so as not to interfere with the transport path of the straw. Because of this, it has an effect that the handling room can be smoothly removed from the exit side plate and the straw can be transported smoothly, and the body side plate is extended outward from the width side edge of the sorting part, and the overhang space Since a suction case can be attached to the inside, the distance between the suction fan and the processing drum can be increased, and there is a possibility that paddy from the processing drum is discharged to the outside of the machine through the suction fan. It has an effect that can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view of a combine having a dust suction structure according to the present invention.

FIG. 2 is a side view of the appearance.

FIG. 3 is a rear view of a main part of the dust suction structure of the present invention.

FIG. 4 is an explanatory plan view of the whole;

FIG. 5 is a rear view of a main part showing another embodiment of the dust suction structure of the present invention.

FIG. 6 is an overall explanatory view showing a relationship between a dust suction structure of the present invention and a fourth gutter.

FIG. 7 is an explanatory view of another embodiment showing a suction case of a dust suction structure of the present invention.

FIG. 8 is an explanatory view showing a fourth gutter.

[Explanation of symbols]

 A Combine 19 Suction fan T No. 4 gutter S S Overhang space M Spacing 23 Airframe side plate 24 Inclined surface 25 Suction hole 26 Suction case 29 Exit side plate

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tadayoshi Sato 428 Enami, Okayama City, Okayama Prefecture Inside of Sairei Industry Co., Ltd. (56) References Japanese Utility Model 55-2230 (JP, U) Japanese Utility Model Utility Sho 60-182747 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/54 A01F 12/00 A01F 12/18

Claims (2)

(57) [Claims] 1. An upper portion of a threshing machine having both a handling cylinder and a processing cylinder, an upper portion of a body side plate extending outward from a width side edge of the sorting portion above a terminal end of a sorting portion. The thruster has a downwardly sloped surface, a suction hole for dust is formed in the side plate, and a suction case containing a suction fan is provided outside the suction hole to project dust. Suction unit structure. 2. An overhanging space is formed above the terminal end of the sorting unit of a threshing machine having both a handling cylinder and a processing cylinder, outside the width side edge of the sorting unit, to form an overhanging space and The suction case is attached to the inner surface of the fuselage side plate so that it is located at the top, and the upper corner of the suction case is cut obliquely so as not to interfere with the transfer path of the straw transported from the feed chain through the outlet side plate of the handling room. The structure of the dust suction unit of the threshing machine.