JP2003259719A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively evade the discharge of grains with dust to the exterior of the threshing apparatus. <P>SOLUTION: The threshing apparatus has partitions 7a and 7b at the site positioning just before a dust-sending opening 4 of a receiving net 5, and at a site of a ceiling plate 6 of a threshing chamber, facing to the position just before the dust-sending opening 4. A treating material-dropping hole 5d of a part 5b positioned at the rear side of the threshing chamber of a receiving net 5 is formed so as to be larger than a treating material-dropping hole 5c of a part 5a positioned at the front side of the threshing chamber. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device equipped with a handling cylinder which rotates about an axis in the front-back direction of a handling room.

[0002]

2. Description of the Related Art In the above threshing device, a dust inlet is provided at the rear end of the handling chamber, and dust such as straw dust generated in the handling chamber is discharged from the dust outlet.

[0003]

In the threshing apparatus described above, conventionally, when the grains flowed to the rear part of the handling chamber without falling from the net, it was easy for the grains to flow out from the dust feed port together with straw dust. As a result, the grains were likely to be discharged out of the thresher together with dust such as straw chips.

It is an object of the present invention to provide a threshing device which makes it easy to avoid dust loss while preventing dust from being mixed into the grain.

[0005]

The constitution, action and effect of the invention according to claim 1 are as follows.

[Structure] A threshing device provided with a handling cylinder that rotates around a longitudinal axis of the handling room, which is located immediately before the dust inlet of the receiving net of the handling room and the ceiling of the handling room. A partition plate that provides resistance to the backward flow of the threshing processed material in the handling chamber is provided at a portion of the plate facing the position immediately before the dust-sending port. The size is made larger than the size of the processing object drop hole in the portion located on the front side of the handling room.

[Operation] Even if the threshed material flows to the rear part of the handling room and is positioned immediately before the dust inlet, the threshing material is immediately delivered due to the resistance of the receiving net and the partition plate provided on the top of the handling room. It does not easily flow out from the dust port, stays in front of the dust port, and is easily handled and unraveled by the handling cylinder. Then, the grains that have flowed to the rear of the handling chamber are less likely to flow out from the dust inlet, and easily leak from the net. The grains that had entered the lumps of straw scraps are also unraveled and easily leak from the net.
Grains are also likely to leak from the net because of the large processed product drop hole in the rear part of the handling net of the net.

Since the size of the processed product dropping hole in the rear part of the handling chamber of the receiving net is larger than that in the front part of the handling chamber, dust leaks from the receiving net on the front side of the handling chamber to form grains. While making it easy to avoid mixing, it is possible to make it easier for the grains to drop from the net due to the labor of the dust inlet.

[Effect] Therefore, the collection efficiency can be improved so that the grains easily leak from the net and are less likely to be discharged together with the dust out of the thresher. Moreover, it is difficult for dust to mix into the grain on the front side of the handling room, and the grain can be collected in a state in which the amount of dust is small.

The structure, operation, and effect of the invention according to claim 2 are as follows.

[Configuration] In the configuration of the invention according to claim 1, the rear portion of the handling chamber of the receiving net is made of sheet metal, and the front portion of the handling chamber is made of synthetic resin.

[Operation] The front portion of the receiving chamber of the receiving net is made of resin,
Since the rear part of the net of the receiving net is made of sheet metal, it is possible to make it less likely to adhere even if the grain is wet, as compared to those made entirely of resin or sheet metal, and the threshed product remains. Therefore, even if a load or friction is applied, it is possible to prevent abrasion due to the large processing object dropping hole and to exhibit strength and prevent deformation.

[Effect] Therefore, it is possible to obtain a grain having a high grain recovery efficiency in a highly durable state such that it can be threshed even if the grain culm is slightly moist.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a handling chamber 1 located at the upper end on the front end side in a threshing machine, and inside the handling chamber 1 is freely rotatable about a shaft center 2a in the front-back direction of the handling chamber. The threshing section A having the handling barrel 2 located at, the swingable sorting device 10 having the front end side located below the handling chamber 1, and having the swingable drive, and located below the front end side of the swing sorting device 10. By the sorting section B provided with the Karako 20 and the collecting section C provided with the No. 1 screw conveyor 25 and the No. 2 screw conveyor 26 which are located side by side in the longitudinal direction of the threshing machine body at the bottom of the sorting section B, A threshing device for combine harvesters is configured. This threshing device is for threshing a harvested grain culm of rice, wheat, etc., which has been harvested by the harvesting section of the combine to recover grain, and is specifically configured as follows.

In the threshing section A, the root side of the cut culm is sandwiched and conveyed by the threshing feed chain 3 in the rearward direction of the machine, the tip side is supplied to the handling chamber 1, and the tip side is threshed by the handling barrel 2. The threshing discharge straws are discharged by the threshing feed chain 3 from the dust inlet 4 located at the rear end of the handling chamber 1, and the threshing-treated products such as grains are leaked from the receiving net 5 of the handling chamber 1 to generate straw scraps. The threshing-treated product is discharged from the dust sending port 4.

The swing selecting device 10 is supported by the threshing machine body on the front end side through the swinging link 11 and on the rear end side by the eccentric drive mechanism 12, and reciprocally swings in the front-back direction of the threshing machine body. A selection frame 13 driven like this,
A portion L of the receiving net 5 located on the front side of the handling room, and a length L corresponding to about ⅔ of the entire length of the receiving net 5 in the front-back direction of the handling room.
1 is located below the front side portion 5a (FIG. 4) having 1 and is attached to the front end side of the selection frame body 13, and the front end portion is located near the lower rear end portion of the Glen pan 14. And has a length L2 which is a portion of the receiving net 5 located on the rear side of the handling chamber and corresponds to about 1/3 of the entire length of the receiving net 5 in the front-back direction of the handling chamber. An opening / closing chaff sheave 3 arranged on the sorting frame body 13 so that the front end side is located below the rear side portion 5b (FIG. 4).
0, a fixed chaff sheave 15 attached to the selection frame body 13 so that the front end is located near the rear end of the opening / closing chaff sheave 30, and a front end is located near the rear end of the fixed chaff sheave 15. And the straw rack 16 attached to the sorting frame 13 and the opening / closing chaff sheave 3
0 and a fixed structure 17 arranged above the fixed chaff sheave 15 and attached to the selection frame body 13, and a Glensieve 18 arranged below the opening and closing chaff sheave 30 and attached to the selection frame body 13. Configured.

The fixed chaff sheave 15 is composed of a plurality of fixed chaf flip plates which are fixed to the sorting frame 13 side by side in the longitudinal direction of the swing sorting device 10 on the rear side of the opening / closing chaff sheave 30, and which are to be processed. The opening of the drop hole is fixed.

As shown in FIG. 2 etc., the sorting structure 1
7, a front end side is located below the dust delivery port 4, and a rear end is located above a rear end portion of the opening / closing chaff sheave 30. The swing sorting device extends rearward from a plurality of locations, and the extended end of the straw rack 17b is located above the fixed chaff sheave 15, and the swing selection of the Glen pan 17a from a plurality of locations in the swing sorting device lateral direction. The screen line 17c extends rearward of the apparatus and has an extended end located above the fixed chaff sheave 15 and one line between the straw racks 17b.

As shown in FIG. 2 and the like, the opening / closing chaff sheave 30 includes a plurality of movable chaf sheave plates arranged in the front-rear direction of the swing sorting device 10 between the left and right side frame portions 13a of the sorting frame body 13. It is constituted by 31. As shown in FIGS. 3 and 6, the upper ends of the movable chaflip plates 31 at both ends are connected to the movable chaflip plate 31 so as to be rotatable relative to each other.
And a side plate portion 13a of the selection frame body 13 via one support plate 33 supporting the connecting pin 32 of each movable chuck flip plate 31 so as to rotate around the axis 32a of the connecting pin 32. It is installed. Support 33 for each of the connecting pins 32
One connecting member 34 is attached to the end portions protruding from the side opposite to the movable chuck flip plate 31. An interlocking pin 35 having one end rotatably inserted into a pin connecting portion 31a located at a lower end side of each movable chaflip plate 31 on both ends of the movable chaflip plate 31, and the interlocking movement of each movable chaflip plate 31. The lower end sides of the movable chuck flip plates 31 are interlocked with each other by one interlocking member 36 fixed to the other end side of the pin 35.

As shown in FIGS. 5 and 7, one side of the movable frame flip plate 31 is attached to one end side of the interlocking pin 35. A chaff adjusting spring 37, which is a coil spring, is attached to the end of the adjusting lever 41, which is supported on the outer surface of the side frame portion 13a, and the end portion of the outer protruding portion 13a. This chaff adjustment spring 3
7 is a connecting pin 3 with the interlocking pin 35 along the elongated hole 13b.
All movable chuck flip plates 31 are connected to the connecting pins 32 by urging the movable chuck flip plates 31 to move upward around the axis 32a.
The shaft 32a is configured to be urged to swing upward.

That is, a pair of the movable chaflip plates 31 adjacent to each other of the plurality of movable chaflip plates 31 arranged in the front-rear direction of the rocking / sorting device 10 are used for leaking the sorting object of the opening / closing chaff sheave 30. A processed product drop hole is formed. When the interlocking pin 35 is moved around the shaft center 32a of the connecting pin 32 along the elongated hole 13b, all the movable chuck flip plates 31 are interlocked to move around the shaft center 32a of the connecting pin 32. It swings downwards to enlarge the workpiece drop hole, and swings upward to shrink the workpiece drop hole. When the total weight of the threshed material accumulated on each movable chaflip plate 31 changes, due to this weight change,
The chaff adjustment spring 37 changes to the extension side to lower the interlocking pin 35 to swing the movable chaflip plate 31 downwardly, and the chaff adjustment spring 37 changes to the shortening side to swing the interlocking pin 35 upward to swing each movable pin. The cha-flip plate 31 is raised and rocked. As a result, the chaff adjusting spring 37 senses the total weight of the threshing processed material accumulated on the opening / closing chaff sheave 30, and automatically adjusts the opening / closing chaf sheave 30 based on the total weight of the processed material. That is, as the total weight of the threshed products accumulated on the opening / closing chaff sheave 30 increases, the total weight of the threshing processed products accumulated on the opening / closing chaff sheave 30 decreases so that the opening degree of the treated product drop hole of the opening / closing chaff sheave 30 increases. The opening / closing adjustment is performed so that the opening degree of the processing object drop hole of the opening / closing chaff sheave 30 is reduced.

As a result, the rocking / sorting device 10 sorts the threshed products as follows. That is, the threshing-treated product dropped and supplied from the front portion 5a of the receiving net 5 is fed to the Glen pan 1
4, the sorting process is performed while being conveyed to the rear side of the swing sorting device, and the threshing process dropped and supplied from the dust feed port 4 of the handling chamber 1 is received by the sorting structure 17 and transported to the rear side of the swing sorting device. While sorting. Glen Pan 14
From the above, threshing product dropped and supplied from the rear part 5b of the receiving net 5, and the Glen pan 17a of the sorting structure 17
Each of the sorted products dropped and supplied from the rear end is received by the opening / closing chaff sheave 30 and is sorted while being transported to the rear side of the swing sorting device. At this time, when the total weight of the processed material accumulated on the opening / closing chaff sheave 30 increases, the opening degree of the opening / closing chaff sheave 30 is adjusted to the expansion side for automatic adjustment based on the weight sensing by the chaff adjusting spring 37, and the grain is removed. Sorting while making it easy to leak,
When the total weight of the processed material accumulated on the opening / closing chaff sheave 30 is reduced, the opening degree of the opening / closing chaff sheave 30 is adjusted to the reduction side for automatic adjustment based on the weight detection by the chaff adjusting spring 37, and dust such as straw dust is removed. Sorting is done while making it difficult to leak. The sorting processed product from the rear end of the opening / closing chaff sheave 30 and the sorting processed product dropped and supplied from the rear end of the sorting structure 17 are sorted by the fixed chaff sheave 15 and the straw rack 16 while being conveyed to the rear side of the swing sorting device. To process. The sorted product leaked from the open / close chaff sheave 30 is sorted by the Glen sieve 18.

Therefore, the sorting section B removes threshing products such as grains that have leaked from the receiving net 5 of the handling room 1 and threshing products such as straw debris that has fallen from the dust port 4 of the handling room 1. , Gravity sorting by the swing sorting device 10 that can swing freely, and wind sorting by the sorting wind that is supplied to the rearward direction of the machine by the Karako 20 sorts into grains and dust such as straw scraps. The particles are dropped from the swing sorting device 10, and the dust is discharged to the outside of the machine together with the sorting air from the discharge port 21a of the dust removal fan 21 and the dust discharge port 22 of the threshing machine located behind the swing sorting device 10.

The collecting section C swings and sorts the first processed material that has leaked out from the grain sieve 18 of the swing sorting apparatus 10.
The No. 1 screw conveyor 25 located below the front end side of the No. 1 conveys the No. 2 processed product to the lateral outside of the threshing machine body, and drops the No. 2 processed matter from each of the Glensieve 18, the fixed chaff sheave 15, and the Straw rack 16 of the rocking and sorting apparatus 10. The No. 2 screw conveyor 26 located below the rear end side of the rocking / sorting device 10, and the No. 2 screw conveyor 2
6 and the lifting device 27 connected to the transport end of the threshing machine body on the lateral outside of the threshing machine body, and conveys the threshing machine body to the front end side of the oscillating sorting apparatus 10 for reduction.

As shown in FIG. 2, FIG. 3, FIG. 4, etc., a partition plate 7a is provided at a portion of the receiving net 5 located immediately before the dust sending port 4.
Is provided, and a partition plate 7b is provided on the inner surface side of the handling room top plate 6 at a position facing the position immediately before the dust-sending port, and both partition plates 7a, 7b are aligned on the inner surface side of the lower tongue plate 8 with the handling room circumferential direction A partition plate 7c arranged so as to line up in a line, and a partition plate 9a provided between the front side portion 5a and the rear side portion 5b of the receiving net 5, and the front and rear direction of the handling chamber of the front side portion 5a of the receiving net 5. A partition plate 9b is provided at a portion located in the middle of. The partition plate 9b located on the front side portion 5a of the receiving net 5 and the partition plate 9a located between the front side portion 5a and the rear side portion 5b of the receiving net 5 project from the inside of the handling chamber toward the handling chamber. By imparting resistance to the threshing-treated product that flows rearward in the handling chamber through the front portion 5a of the receiving net 5, the threshing-treated product stays in the handling chamber 1 and is easily processed by the handling barrel 2, Is easily leaked from the front portion 5a of the receiving net 5 to the Glen pan 14.

The partition plates 7a to 7c attached to the rear portion 5b of the receiving net 5, the handling room top plate 6, and the lower tongue plate 8 are the inner surfaces of the receiving net 5, the handling room top plate 6, and the lower tongue plate 8. From the above, the rear side portion 5b of the receiving net 5 gives a resistance to the threshing processed material flowing backward in the handling room, so that the threshing processed material stays in the handling room 1 and It is made easy to be processed and the grains are easily leaked from the rear part 5b of the receiving net 5.

As shown in FIGS. 2 and 4, the front portion 5a of the receiving net 5 has through-holes as processing object dropping holes 5c arranged side by side in the longitudinal direction and the circumferential direction of the handling chamber 1. The rear side portion 5b of the receiving net 5 is made of a synthetic resin plate obtained by molding an ultra high molecular synthetic resin material on a perforated plate.
The through-holes as the processed-material dropping holes 5d are made of sheet metal that is pressed into a perforated plate that is open side by side in the longitudinal direction and the circumferential direction of the handling chamber 1. The size of the processed product drop hole 5c provided in the front part 5a of the receiving net 5 is smaller than the size of the processed product drop hole 5d provided in the rear part 5b. As a result, the receiving net front side portion 5 of the handling room 1
In the front part provided with a, while the culm is wet, it is difficult to adhere because it is made of resin in the net front part 5a,
Threshing is performed while dropping the grains in the grain pan 14 with a uniform distribution as much as possible due to the small treated product dropping holes 5c in the front net receiving portion 5a. In the rear side portion of the handling chamber 1 provided with the rear net-receiving portion 5b, the large processed material drop holes 5d in the rear net-receiving portion 5b make it easy for the grains to leak out, but at the same time, receive the grains. Threshing treatment is performed while the required strength is exhibited by the sheet metal of the net rear side portion 5b.

The height of the partition plate 9a located on the rear side of the two partition plates 9a and 9b of the front portion 5a of the receiving net 5 protruding from the inner surface of the receiving net toward the handling chamber. The height H1 is higher than the height H2 of the partition plate 9b located on the front side, which protrudes toward the handling chamber from the inner surface of the receiving net.

As shown in FIGS. 5 and 7, the interlocking pin 3 is
The proximal end side of the adjusting lever 41 having the through hole 41b into which the end portion 5 is inserted is rotatably connected to the outer surface side of the side wall portion 13a of the selection frame body 13 through the connecting pin 42. . Through hole 4 into which the end of the interlocking pin 35 is inserted
The base end side of the second adjusting lever 43 provided with 3a is also rotatably connected to the outer surface side of the side wall portion 13a via the connecting pin 42. Both adjusting levers 41 and 43 are connected to each other by a connecting pin 42.
The swinging operation can be separately performed around the axis of the.

That is, the adjusting lever 41 is attached to the side wall portion 13a.
While the operation portion 41c is elastically deformed toward the side away from the side wall portion 13a with the portion connected to the rocking fulcrum as the fulcrum, the operation portion 41c is removed from the positioning protrusion 44 fixed to the outer surface side of the side wall portion 13a. The adjusting lever 41 is swingably adjusted about the axis of the connecting pin 42, and the operating portion 41c of the operating lever 41 which has reached the adjustment target position is engaged with one selected from the plurality of positioning protrusions 44 by the positioning hole thereof. And the operating lever 41 is locked at the adjustment target position, and the second adjusting lever 43 is adjusted by swinging around the axis of the connecting pin 42 while the second adjusting lever 43 is also removed from the positioning protrusion 44 like the adjusting lever 41. When the target position is reached, the operating portion 43b is engaged with one positioning protrusion 44 through the positioning hole to lock the second adjusting lever 43 at the adjusting target position. By doing so, the stopper action of the stopper portion located at both ends of the through hole 41b of the adjusting lever 41 or the pushing action, and the stopper action of the stopper portion located at both ends of the through hole 43a of the second adjusting lever 43 can be achieved. By setting the swing limit position of the interlocking pin 35 or pushing the interlocking pin 35 against the chaff adjusting spring 37 by the pushing action, the movable chaflip plate 3 is pushed.
Adjust the limit position on the rising close side and the falling open side of 1,
It is possible to adjust the angular range in which the movable chaf plate 31 is rocked and adjusted by the chaff adjusting spring 37, or to adjust the spring force of the chaff adjusting spring 37. As shown in FIG. 5 and the like, a counter having one end side engaged with the interlocking pin 35 by a through hole, an intermediate part rotatably connected to the connecting pin 42, and a weight 45 on the other end side. The member 46 suppresses the opening / closing of the opening / closing chaff sheave 30 due to the swing of the swing selecting device 10.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of the whole combine threshing device.

FIG. 2 is a cross-sectional view of a portion where a sorting structure and an opening / closing chaff sheave are arranged.

FIG. 3 is a cross-sectional front view of the threshing unit.

FIG. 4 is a perspective view of the entire receiving net.

FIG. 5 is a plan view of an opening / closing chaff sheave opening adjustment section.

FIG. 6 is a cross-sectional view of a chaflip plate mounting portion.

FIG. 7 is an explanatory view showing an opening / closing chaff sheave opening adjustment structure.

[Explanation of symbols]

1 handling room 2 handle 2a Rotating axis of the handling cylinder 5 Receiving network 5a Front part of the receiving room of the receiving net 5c Treated material drop hole on the front side of the handling room of the net 5b Receiving room rear part of receiving net 5d Treated material drop hole on the rear side of the handling room of the net 6 Handling room top plate 7a, 7b Partition plate

Continued front page    (72) Inventor Takafumi Mitsui             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Yoshihiro Inoue             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F term (reference) 2B094 AA07 AA11 AJ13 AJ14 AJ15                       HA04 HA06 HD09

Claims (2)

[Claims] 1. A threshing device having a handling cylinder that rotates about an axis in the front-back direction of the handling room, the portion being located immediately before the dust inlet of the net of the handling room, and the handling room top plate. A partition plate that provides resistance to the rearward flow of the threshing processed material in the handling room is provided at a position opposite to the position immediately before the dust-sending port, and the size of the processed material drop hole in the portion located on the rear side of the handling room of the receiving net. The threshing device has a size larger than the size of the processed material dropping hole in the portion located on the front side of the handling room. 2. The threshing device according to claim 1, wherein the rear portion of the handling chamber of the receiving net is made of sheet metal, and the front portion of the handling chamber is made of synthetic resin.