JPH1175524A - Discharge dust controller for thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject controller capable of detecting high accurately a flow amount of a material to be treated in a tailing return barrel for treating second crops by means of detecting a grain amount so that a dust-discharging capacity is increased/decreased and a selecting performance in a thresher is improved. SOLUTION: This controller is applied to a thresher comprising; a handling barrel 2 axially supported within a threshing chamber 1, a treating barrel 4 axially supported within a treating chamber 3 mounted parallel to one side of the threshing chamber 1, and a selecting chamber 6 with a swingable selecting shelf 5 under the threshing chamber 1 and treating chamber 3, wherein there a tailing return barrel 7 is formed in the front half of the treating barrel 4 so as to treat second returned crops and return them to the swingable selecting shelf 5 and a discharge dust-treating barrel 8 is formed in the rear half thereof so as to receive thresh treatment residual tailings for re-treatment and discharge them, and wherein the controller is designed to control automatically a revolution number of a discharge fan 10 for discharging discharge tailings outwardly according to detected values by a flow detector 9 positioned properly on the side of the tailing return barrel 7 in the treating chamber 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust control device for a threshing device, and belongs to the technical field of a threshing device for a combine or a harvester as an agricultural work machine.

[0002]

2. Description of the Related Art A processing chamber having a processing cylinder mounted on a shaft is disposed in parallel with one side of a threshing chamber having a processing cylinder mounted on a shaft. The second part is a second processing cylinder that returns the second material to the rear end and agitates it while sending it forward and discharges it to the sorting room from the front end discharge port.The second part is handled in the threshing room. The threshing process, which receives the threshing residue that does not leak from the net and reprocesses it while sending it backward, leaks it to the sorting chamber, and discharges it to the sorting chamber from the rear-end discharge port. It is well known that a threshing operation is performed in a configuration in which a dust disposal cylinder is connected on the same axis.

[0003] However, during the threshing operation, normally, the dust-discharging ability of the dust-exhaust fan for discharging the sorted dust to the outside of the machine is constant. Shortage, the sorting performance decreases,
There was a drawback that it was difficult to continue stable threshing work in good condition. Therefore, according to the present invention, the rotation speed of the dust discharge fan is automatically adjusted and controlled in accordance with the detection of the flow rate of the object to be processed by the flow rate detection means provided in the processing chamber of the second processing cylinder.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a processing drum 2 which is shaft-mounted in a threshing chamber 1 and a processing drum which is shaft-mounted in a processing chamber 3 provided in parallel with one side of the threshing chamber 1. In a threshing apparatus having a threshing chamber 4 and a sorting chamber 6 on which a swinging sorting shelf 5 is mounted below the threshing chamber 1 and the processing chamber 3, the first half of the processing cylinder 4 is treated with a second reductant. The second processing cylinder 7 is returned to the rocking sorting shelf 5 and the second half is sorted into a dust processing cylinder 8 that takes in the threshing processing residue from the threshing chamber 1 and reprocesses and discharges dust. Flow rate detecting means 9 provided at an appropriate position in the processing chamber 3 on the side of the second processing cylinder 7 for detecting the flow rate of the processing object.
, The number of rotations of the dust discharge fan 10 that discharges the dust to the outside of the apparatus is automatically adjusted and controlled according to the detection value of the dust control device.

[0005]

According to the above construction, the thresh-processed by the handling cylinder 2 and leaked from the handling net are subjected to the swing sorting by the swing sorting shelf 5 of the sorting room 6 and the wind sorting by Karamin to make the largest grain. The second grain is sorted and the first grain is transported to the Glen tank, and the second grain is returned to the processing chamber 3.

In such a threshing operation, the second product transferred to the processing chamber 3 is the second processing cylinder 6 in the first half of the processing cylinder 4.
The second reduced material which has been reduced to the rear end and a part of the threshing material which has leaked from the upper side of the net is subjected to a stirring process while being sent forward by the second processing cylinder 7, and the second processed material is processed. The processed material is discharged from the front end side discharge port onto the swinging sorting shelf 5. When such a stirring process is performed, the flow rate detecting means 9 provided at an appropriate position in the processing chamber 3 on the side of the second processing cylinder 7. Processing room 3 by
Even if the flow rate of the second processed material sent through the inside changes greatly, for example, this change is electrically detected based on the amount of grain, and the detected value is compared with a preset threshold value. By operating the actuator and the like to automatically adjust and control the rotation speed of the dust discharge fan 10, it is possible to maintain an appropriate dust discharge capacity.

[0007]

As described above, the amount of the second processed material to be agitated while being sent forward by the second processing cylinder 7 in the first half of the processing cylinder 4 in the processing chamber 3 is electrically detected by the flow rate detecting means 9. A comparison is made between the detected value and a preset threshold value, and based on the result of the comparison, the actuator or the like can be operated to automatically adjust and control the rotation speed of the dust discharge fan 10. Since the dust removal capacity of the dust removal fan 10 is constant, when the flow rate of thresh increases, the sorting performance is reduced due to the lack of the dust removal capacity, and it is not difficult to continue stable threshing work. By detecting the flow rate of the object flowing through the second processing cylinder 7, it is possible to determine the flow rate of the threshed material relatively easily and with high accuracy. Adjust and control , By maintaining good sorting performance with adequate dust removing capability, it is possible to continue a stable threshing work.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings as to a combine as a farm work machine. FIG. 11 shows the overall structure of the combine. A traveling device 13 having a pair of left and right traveling crawlers 12 traveling on the soil surface is provided below the chassis 11 of the combine.
A grain tank 15 for threshing the harvested culm supplied by being pinched and conveyed to the feed chain 14, sorting and collecting the threshed grain, and temporarily storing the grain, and transferring the stored grain to the outside of the machine 1 Threshing device 1 having a threshing auger 16 for discharging
7 is mounted.

In front of the threshing device 17, a weeding body 18 for weeding the planted grain culm from the front end side thereof, a raising part 19 for raising the weeded grain culm, and a mowing of the raised grain culm. A cutting device 20 having a cutting blade portion 20 and a grain stalk transporting portion 21 for transporting the harvested grain stalks rearward and transferring the harvested stems to the feed chain 14 is mounted on a soil surface by a telescopic cylinder 23 driven by hydraulic pressure. It is configured to work vertically.

An operation device 24 for controlling the operation of the combine is provided on one side of the threshing device 17 and an operation seat 2 for this operation.
The engine 26 is mounted below the operation seat 25, and the Glen tank 15 is disposed behind the operation seat 25. A cabin 27 that covers the operation device 24 and the operation seat 25 is provided, and these traveling devices 1
3, the threshing device 17, the mowing device 22, the operating device 24, the engine 26 and the like constitute a combine body 28.

The threshing apparatus 17 comprises a threshing chamber 1 and a processing chamber 3 on the upper side, and a sorting chamber 6 on the lower side, and a large number of teeth 2a are planted in the threshing chamber 1. Then, the handling cylinder 2 for threshing the grain stalks is provided with a shaft mounted from the front side to the rear side. Threshing device 1 parallel to the right side of the threshing room 1 in plan view
The processing chamber 3 extended to the outlet side wall 29 of 7 has:
A large number of agitation teeth 7a for agitating the reduced second product while feeding them forward and a discharge blade 7b on the front end side are provided in the first half, that is, up to the exhaust port partition plate 30 of the threshing chamber 1. Between the second processing cylinder 7 and the latter half thereof, that is, between the dust outlet partition plate 30 and the rear end, the dust outlet 30 of the threshing chamber 1 is provided.
The threshing process residue discharged from a is taken in through the front end inlet 8b, and the dust processing cylinder 8 in which a number of dust processing teeth 8a to be reprocessed while being sent backward is integrated on the same axis. The processing cylinder 4 connected to the processing cylinder 2 is configured to be internally mounted on a shaft so as to rotate in the same direction as the rotation direction of the handling cylinder 2.

The feed chain 14 for pinching and transporting the grain stalk along the handle 1a on the left side in plan view of the threshing chamber 1 and a clamping rod 31 for clamping the grain stalk to the feed chain 14 are provided. A handling net 33 is provided to surround the lower part of the outer peripheral edge of the handling teeth 2 a of the handling cylinder 2 from the handling port 1 a to the handling cylinder cover 32. A front end side discharge for discharging the non-perforated stirring receiving plate 34 surrounding the lower part of the outer peripheral edge of the stirring processing teeth 7a of the second processing cylinder 7 on the handling net 33 side by appropriately providing the space C by the discharge blade 7b. In addition to the outlet 34a, the pressure at which a grain contained in the object to be processed collides with a piezoelectric element or the like due to the rotational centrifugal force of the discharge blade 7b is provided at an appropriate position near the front end side discharge port 34a. , The grain amount sensor 9 as a flow rate detecting means for determining the amount of the agitated material flowing through the second processing cylinder 7 is detected.

A dust receiving plate 35 surrounding the lower part of the outer periphery of the dust processing teeth 8a of the dust processing cylinder 8 is connected to a rear end side discharge port 35a.
The stirring receiver plate 34 is provided with a step. Note that the dust receiving plate 35 has a cutout portion 35b so that only the portion where the dust processing teeth 8a are linearly arranged can leak. The threshing in the threshing room 1 and the threshing which has been leaked from the handling net 33 and the second processed material which has been agitated in the processing room 3 and discharged from the discharge port 34a of the agitating receiving plate 34 are transferred to the sorting room 6. A vertically long swing sorting shelf 5 that performs sorting while providing a swing fulcrum 36 at the front end with the front side being the good side along the axial direction of the handling cylinder 2 and extending and extending toward the rear side, It is swingably mounted by a swing drive cam 37 provided at its rear end. On the lower side of the rocking sorting shelf 5,
The rotation of the plurality of Karamin blades 39a provided in 8 causes a Karamin 39 to be generated to generate a sorting wind and to be sent to the sorting air passage W.

The swing sorting shelf 5 includes a rack-shaped transfer shelf 40 for transferring the threshed material and the second processed material to the lower side of the area above the Karamin 39, and a downstream side following the transfer shelf 40. In order to adjust the gap S by the opening and closing action of the armor-shaped blade 41a to adjust the amount of leakage of threshing material and second processed material, and from the rear end of the chaff sheave 41 to the lower side A straw rack 42, which receives the waste discharged from the rear end side discharge port 35a of the dust receiving plate 35 together with the contaminants that do not leak from the sheave 41 and performs rough sorting, is disposed in the upper stage, respectively. A mesh-like grain sieve 43 for medium-sorting the coarsely-selected material leaked from the lower portion 41 is arranged at the lower stage.

Below the sheave 43, the sheave 43 is provided.
In addition to providing a first sorting unit for carefully sorting out the most grain by blowing air from the Karamin 39 on a fixed first sorting shelf 44, A second sorting unit for roughly sorting the second items by blowing air from Karino 39 on the fixed second sorting shelf 45 is provided on the fixed second sorting shelf 45, and the first sorting unit and the second sorting unit are provided with the second sorting unit. A selection air passage W is formed, in which the air is distributed by the air splitter 46 positioned at the Karamino discharge port.

The bottom plate of the Karino wind drum 38 is extended linearly toward the lower side to form a lower lip portion 38b of the Karino outlet.
The end of this lower lip 38b is connected to the upper side of the first gutter 48, which accommodates the first grain to be sorted down from the first sorting shelf 44 and feeds it by the first spiral 47, and The lower side is connected to the lower end of the first sorting shelf 44, and this first sorting shelf 44
On the back side near the upper end portion, the upper end of the upper side of the second receiving gutter 50 that accommodates the second item to be sorted down from the second sorting shelf 45 and feeds the second item horizontally by the second spiral 49 is provided at an appropriate interval. The lower side of the second sorting shelf 45 is placed in a double-contact state with an appropriate space below and near the lower end of the second sorting shelf 45, and the upper end of the second sorting shelf 45 is arranged to be opened outside the machine. Configuration.

A second reduction cylinder having a lifting spiral 51a with an upper end portion serving as a reduction blade, which takes over the second product laterally fed by the second spiral 49 and lifts it to the processing chamber 3 on the upper side. 5
1 is obliquely provided on the outer wall surface of the right side wall 52 in plan view of the threshing apparatus 17, and the return port 51 b of the second reduction cylinder 51 is fed to the second processing cylinder 7 of the processing chamber 3 through the returned second reduced product. It is configured to be opened to return to the rear end position.

At the upper side of the end of the swing sorting shelf 5, the sorting wind by the sorting wind of the Karamin 39 and the swing sorting of the swing sorting shelf 5, and the rear end side discharge port 35 a of the dust treatment cylinder 8. And a dust discharge fan 10 such as a cross flow fan for discharging the dust discharged from the apparatus to the outside of the apparatus. As shown in FIG. 3, a dust exhaust shaft 54 for fixing the dust exhaust fan 10 projects through the left side wall 55, and a supporting metal 56 for supporting the projected dust exhaust shaft 54 is provided on the outer wall surface of the side wall 54. Fixed,
A cam surface 56a provided on the support metal 56 and a cam ring 58 which slides on the cam surface 56a to slide on the adjustment pulley 57a side of the speed change pulley 57 for continuously variable transmission are provided. The adjustment pulley 57a is slid by a spline or the like by the rotation of, and is adjusted to be wider or narrower than the fixed pulley 57b fixed by the stopper 59. The cam arm 58a is projected from the cam ring 58, and a connecting rod (or wire) 62 is connected to the cam arm 58a and a wiper motor 61 as an actuator.
And so on.

As shown in FIG. 4, a grain amount sensor 9 as a flow rate detecting means is connected to an input side of a controller 63 which mainly carries out a CPU and performs arithmetic control, and a wiper as an actuator is provided at an output side. The motor 61 is connected and configured. The grain stalks nipped and transported by the feed chain 14 are threshed by the handling drum 2 in the threshing room 1, and most of the thresh that has leaked from the handling net 33 due to the threshing falls onto the transfer shelf 40 of the swing sorting shelf 5. Then, the coarsely-selected material sent from the transfer shelf 40 to the chaff sheave 41 and leaked from the chaff sheave 41 is further leaked by the Glen sheave 43, and the medium-selected material leaked by the Glen sheave 43 is a sorting wind from the Kara min 39 In the path W, the wind is sorted on the first sorting shelf 44, and the selected first grain falls to the first gutter 48 and is fed sideways by the spiral 47. Is temporarily stored in a Glen tank 15 via a not-shown fryer.

The threshing residue which does not leak from the handling net 33 is discharged from the dust outlet 30a of the threshing chamber 1 and taken in through the front end inlet 8b of the dust treatment drum 8 (see FIG. 8). The incorporated threshing residue is processed while being sent rearward by the dust-extraction teeth 8a, and a part of the processed material is allowed to leak onto the chaff sheave 41 from the cutout portion 35b (see FIG. 9). The paper is discharged from the rear end discharge port 35a onto the straw rack 42 (see FIG. 10).

The contaminants that do not leak from the chaff sheave 41 and the waste material roughly sorted by the straw rack 42 are
In the sorting wind path W from Karino 39, the second item selected by the wind on the second sorting shelf 45 falls into the second receiving gutter 50 and the second spiral 4
9 and the second product is further fed by the lifting spiral 51a of the second reduction cylinder 51, and the rear end position of the second processing cylinder 7 from the reduction port 51b at the upper end. While being sent forward along with a part of the threshing material that has leaked from the upper side of the handling net 33, the stirring process is performed by the stirring process teeth 7 a of the second processing cylinder 7 (see FIG. 7). The flow rate is determined by detecting the amount of grains discharged from the front end side discharge port 34a, and the agitation processed material discharged onto the transfer shelf 40 of the swing sorting shelf 5 is sorted by swing transfer. (See FIG. 6).

When the flow rate of the agitated product is increased, the detection of the kernel amount by the kernel amount sensor 9 causes the voltage value V detected by the kernel amount sensor 9 to be changed as shown in the flowchart of FIG. For the condition of A <V <B based on threshold values A and B preset in the controller 63, V
> B, when V> B, the wiper motor 61 is output to rotate the cam ring 58 via the cam arm 58a, and the rotation of the cam ring 58 causes the cam surface 56a to rotate the support metal 56. By sliding, the adjustment pulley 57a is slid with respect to the fixed pulley 57b toward the side where the belt pitch diameter is reduced, thereby increasing the number of revolutions of the dust discharge fan 10 and increasing the dust discharge capability.

When the flow rate of the agitated product is reduced, the detection of the kernel amount by the kernel amount sensor 9 causes the voltage value V detected by the kernel amount sensor 9 to be detected as shown in the flowchart of FIG. And V <A under the condition of A <V <B based on threshold values A and B preset in the controller 63. When V <A, the wiper motor 61 is output. By adjusting the belt pitch diameter to the side where the belt pitch diameter is increased by the reverse operation, the rotation speed of the dust discharge fan 10 is decreased to reduce the dust discharge capability.

As described above, the grain quantity sensor 9 provided near the discharge blade 7b of the second processing cylinder 7 in the first half of the processing cylinder 4.
By detecting the amount of grain of the second processed material flowing through the second processing cylinder 7 part, the increase in the amount of dust due to the increase in the flow rate of threshed can be sorted out due to the lack of the ability to discharge dust outside the machine. In order to prevent performance degradation, the controller 63 automatically controls the rotation speed of the dust exhaust fan 10 to increase the dust exhaust capacity, and conversely, reduces the amount of dust associated with the decrease in the flow rate of thresh. In order to prevent the increase of the third scattering of the grain, the rotation speed of the dust discharge fan 10 is controlled to decrease. In addition to the control of the rotation speed of the dust discharge fan 10, The rotation speed is adjusted and controlled by an actuator or the like so that the wind force of the sorting wind can be changed strongly.

With this configuration, when it is determined by the detection of the grain quantity sensor 9 that the flow rate of the object to be processed has become equal to or more than a certain value, the controller 63 first controls the Karamin 39.
By controlling the rotation speed of the dust fan 10 to increase, and by further controlling the rotation speed of the dust discharge fan 10 when the flow rate further increases, the airflow of both the Karin 39 and the dust discharge fan 10 is controlled according to the flow rate of the processing object. Therefore, more appropriate sorting performance can be obtained.

The combination and order of controlling and controlling the Karino 39 and the exhaust fan 10 are not limited to the present invention, and the wind control of the Karino 39 is not limited to only the rotation speed, but is a control valve for releasing the wind. It does not matter if it is used.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing the entire configuration of a threshing apparatus.

FIG. 2 is a plan view showing the entire configuration of the threshing apparatus.

FIG. 3A is a cross-sectional plan view showing a continuously variable transmission mechanism of a dust discharge fan. (B) A side view showing the continuously variable transmission mechanism of the dust discharge fan.

FIG. 4 is a block diagram showing an electric circuit of automatic control.

FIG. 5 is a flowchart illustrating a procedure for determining automatic control.

FIG. 6 is a front sectional view showing an aa section of FIG. 1;

FIG. 7 is a front sectional view showing a bb section of FIG. 1;

FIG. 8 is a front sectional view showing a section taken along line cc of FIG. 1;

FIG. 9 is a front sectional view showing a section taken along line dd of FIG. 1;

FIG. 10 is a front sectional view showing an ee section of FIG. 1;

FIG. 11 is a side view showing the overall configuration of the combine.

[Explanation of symbols]

 1. Threshing room 2. Handling cylinder 3. Processing room 4. Processing cylinder 5. Swing sorting shelf 6. Sorting room 7. Second processing cylinder 8. 8. Dust treatment cylinder Flow rate detecting means 10. Dust fan

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Eiichi Imamura 1st Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. In-house Engineering Department (72) Inventor Hiroshi Kugimiya 1 Toyo-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A handling drum 2 mounted on a shaft in a threshing room 1, a processing drum 4 mounted on a processing room 3 provided in parallel with one side of the threshing room 1, In a threshing apparatus having a sorting chamber 6 on which a swing sorting shelf 5 is mounted below the processing chamber 3, the first half of the processing cylinder 4 is processed with a second reductant and is placed on the swing sorting shelf 5. The second processing cylinder 7 is returned, and the latter half is sorted into a dust processing cylinder 8 that takes in the threshing processing residue from the threshing chamber 1 and reprocesses and discharges dust. The rotation speed of a dust discharge fan 10 for discharging dust to the outside of the machine is automatically adjusted and controlled according to a value detected by a flow rate detector 9 for detecting a flow rate of an object to be processed provided at an appropriate position in the chamber 3. A dust control device.