JP3102019B2 - Threshing sorting control equipment in combine harvesters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a threshing / sorting control device in a combine for the purpose of reducing the third loss when the aircraft circulates.

(Prior art)

Conventionally, a swingable control valve is provided at a dust discharge port formed at the end of the wind selection unit, and the control valve is operated automatically in accordance with the degree of the third loss to automatically operate the control valve. A technique that allows the user to change is known, for example, from Japanese Utility Model Laid-Open No. 56-96948.

[Problems to be solved by the invention]

In such a conventional apparatus, there is a problem in that the supply of grain stalks into the handling room is reduced during the recirculation of the aircraft, so that the sorting wind acts strongly, and a large amount of grains are scattered outside the machine from the dust outlet. .

[Means for solving the problem]

The present invention, when the threshing amount in the threshing machine is small, for example, at the time of the body revolving, controlling the dust control plate to operate in the direction to automatically close the dust outlet, also control the dust control plate In order to solve the problem by reducing the amount of processed material in the handling room, the following technical measures were taken.

That is, in the first invention, a dust control plate 19 for controlling the opening and closing of the dust outlet 13 formed at the end of the wind selection unit 7 is provided, and the harvesting operation of one stroke is completed and the process shifts to the harvesting operation of the next stroke. When the operation detecting mechanism 21 detects the raising operation of the cutting unit A, the threshing unit B maintains the horizontal posture and performs the dust control. A threshing / sorting control device in a combine is characterized in that the plate 19 is operated to close the dust outlet 13.

In the second invention, a dust feed control plate 24 for controlling the feed of the processed material is provided in the handling room, and the raising operation of the cutting unit A at the time of completing the cutting operation of one stroke and shifting to the cutting operation of the next stroke. When the operation detecting mechanism 21 detects the raising operation of the cutting unit A, the threshing unit B operates to the feed resistance side while the threshing unit B maintains the horizontal posture. A threshing / sorting control device in a combine, which is characterized by being relatedly configured.

In the third invention, a dust outlet formed at the end of the wind selection unit 7
A dust control plate 19 for controlling the opening and closing of 13 is provided, and a dust control plate 24 for controlling the feed of the processed material is provided in the handling room. When the operation detecting mechanism 21 detects the raising operation of the cutting unit A, the threshing unit B keeps the horizontal position, and the threshing unit B detects the raising operation of the cutting unit A. Is operated so as to close the dust discharge port 13, and the dust sending control plate 2 is configured to be operated so as to be operated on the feed resistance side. It is.

[Action]

When one cycle of reaping work is completed and you move to the next step,
The mowing part A is raised to the non-working position, and the threshing part B
Rotates while maintaining the horizontal posture, but during such rotation, the supply of grain culm to the threshing machine is reduced or stopped compared to normal mowing work, so the inside of the threshing machine is Threshing is greatly reduced. In such a case, in the first embodiment, the dust control plate 19 is operated to close the dust outlet 13.

In the second invention, the dust control plate 24 operates on the feed resistance side.

In the third aspect, the dust control plate 19 is operated to close the dust outlet 13, and the dust control plate 24 is operated to the feed resistance side.

〔The invention's effect〕

Therefore, for example, even in the state where the threshing amount is very small, such as at the time of the aircraft going around, in the first invention,
Since the threshing machine B is maintained in a horizontal position and the dust outlet 13 is closed, the grains are not blown off from the dust outlet 13 by the sorting wind, and the scattering loss to the outside of the machine can be prevented. .

In the second invention, since the threshing machine B maintains the horizontal posture and the dust sending control plate 24 operates on the feed resistance side, the discharge of straw waste from the handling room to the wind sorting unit 7 is reduced, and sorting is performed. The performance can be prevented from deteriorating. Also, by giving resistance to the feeding action in the handling room, the recovery rate of the sari grains mixed in the straw waste is improved.

In the third invention, the threshing machine B is maintained in the horizontal position, the dust outlet 13 is closed, and the dust sending control plate 24 operates on the feed resistance side. It is possible to prevent scattering loss to the outside of the machine without being blown off from the outside, and also to reduce the discharge of straw waste from the handling room to the air selection unit 7 and prevent the sorting performance from deteriorating. Also, by giving resistance to the feeding action in the handling room, the recovery rate of the sari grains mixed in the straw waste is improved. Thereby, it is possible to provide a threshing apparatus with further improved sorting performance, and it is possible to provide a combine threshing apparatus with greatly improved work efficiency.

〔Example〕

 Hereinafter, embodiments of the present invention will be described.

A denotes a combine harvester, B denotes a threshing machine, C denotes a traveling crawler, and the harvester A is configured to be able to move up and down around a fulcrum P.

The threshing machine B has a handling room 2 equipped with a handling cylinder 1 for implanting and threshing teeth, and a front wall and a rear wall of the handling room 2 for supporting a shaft of the handling cylinder 1 include: A supply port 3 for supplying grain culm to the handling room 2 and an outlet for discharging threshed grain culm are provided, respectively. A feed chain 4 for nipping and transferring the source is provided.

Below the receiving net 5 stretched along the outer periphery of the handling cylinder 1 below the handling room 2, there is provided a sorting unit 6 equipped with a sorting device 6 for receiving and sorting threshing material falling from the receiving net 5. 7 are provided.

The sorting device 6 comprises an oscillating sorting device 8 and a pressurized air fan 9 for sending a sifting wind to the oscillating sorting device 8, and the oscillating sorting device 8 is provided with a Glen pan 10 and a Glen sheave on a frame that can be driven to swing. 11 are provided in a series of front and rear directions, and a chaff sheave 12 is provided from above to behind the Glen Sheave 11.

Then, the thresh that has leaked from the receiving net 5 is received by the Glen pan 10 and rocked and transported to the rear Glen Sheave 11 while sorting by specific gravity difference. Release from

On the other hand, the dust-exhausted material discharged from the dust-falling port 2a of the handling chamber 2 is received on the chaff sheave 12, and is sifted and swayed to the rear while being sieved. Is discharged to the outside of the machine together with the sorting wind through the dust opening 13 opened by the
14 allows suction and discharge.

The bottom of the wind selection unit 7 is provided with a first gutter 15 and a second gutter 16,
Reference numeral 17 denotes a second reduction shelf that is obliquely provided between the dust outlet 13 and the second receiving gutter 16. The dust outlet 13 is provided with a dust control plate 19 that can swing around a horizontal axis 18 that opens and closes this portion.

Reference numeral 20 denotes a power steering lever, which is configured to be able to control the rotation of the aircraft left and right by swinging in the left and right direction.
When the rocking operation is performed in the front-rear direction, the cutting unit A is controlled to move up and down.

In the embodiment, the operation detecting mechanism 21 for detecting the mowing-up operation during the rotation of the machine by the power steering lever 20, that is, the switch SW for detecting that the mowing unit has been raised to a predetermined non-working position is provided. , The detection switch
Based on the detection result of SW, the control unit 22, the motor M, the interlocking mechanism 23
The dust control plate 19 is configured to swing automatically in a direction to close the dust discharge port 13 via the like.

When the mowing part A is lowered to the predetermined mowing work position, it goes without saying that the dust control plate 19 automatically swings in a direction to open the dust outlet 13.

On the other hand, in the handling chamber 2, a dust feed control plate 24 that is tilted at a predetermined angle with respect to the handling cylinder axis direction and that can change the tilt angle between a direction that promotes feeding and a direction that imparts resistance to feeding is provided. Provided.

The dust feeding control plate 24 can swing around the pin shaft 25, and can adjust the inclination angle change via the operation arm 26, as shown in FIG.
When the state is changed from the state (2) to the state (2), the processing object feed resistance is applied, and the residence time in the handling room is lengthened. Conversely, the state (2) shifts from the state (2) to the state (2). When the adjustment is changed, the feeding of the processed material is promoted, and the residence time in the handling room is shortened.

Therefore, when the airplane circulates, the amount of processed material in the handling room is reduced, and the load is reduced. If the dust control by the dust sending control plate 24 is changed to the feeding resistance side (state (b)), Since the discharge of the processed material to the wind selecting unit is reduced, the third scattering loss is also reduced.

Therefore, simultaneously with the control of the dust control plate 19, the dust feed control plate 24 is automatically sent via the control unit 22, the control motor M, the interlocking mechanism 27, etc., based on the detection result of the detection switch SW. It is configured to control to the resistance side.

In another embodiment, E is an engine, 28 is a traveling gear box, 29 is an HST (hydraulic drive), 30 is an HST output shaft, and the power from the output shaft 30 is cut via a cutting tension clutch 31. It is configured to be input to the input shaft 32 to the unit A.

33 is a feed chain input shaft, 34 is a feed chain drive gearbox, 35 is a feed chain drive sprocket,
Reference numeral 36 denotes a threshing counter shaft, which is interlockingly configured to drive the handling drum 1 and the compressed air fan 9 via transmission belts 37 and 38.

Power from the engine E is transmitted through the transmission belt 39 to the HST29
And transmitted to the threshing counter shaft 36 via a threshing tension clutch 40.

Also, power from the HST output shaft 30 is to be input to the feed chain input shaft 33 via a feed chain engagement clutch 41a, and according to such a transmission system, when the HST is neutralized, The drive of the feed chain 4 is stopped. At this time,
If the feed chain input shaft 33 is configured to be driven from the threshing counter shaft 36 via the feed chain tension clutch 41b, a pillow handling operation with the machine stopped is possible.

Reference numeral 42 denotes an HST lever (running speed change lever), and reference numeral 43 denotes a reaping clutch lever, which links the reaping tension clutch 31 and the feed chain tension clutch 41a. Reference numeral 44 denotes a threshing clutch lever, in which the threshing tension clutch 40 can be turned on and off independently and a threshing tension clutch.
The structure is such that both the feed chain 40 and the feed chain engagement clutch 41b can be switched to a state in which the on / off operation can be performed in conjunction with each other.

[Brief description of the drawings]

Fig. 1 shows an embodiment of the present invention. Fig. 1 is a side sectional view of a threshing machine, Fig. 2 is a schematic side view showing an operation state of main parts, and Fig. 3 is a side view of main parts of a combine. FIG. 4 shows a transmission path diagram of the combine. Description of symbols A: cutting section, B: threshing machine, 7: wind selection section, 13: dust outlet, 19: dust control plate, 21: motion detection mechanism, 24:
Dust control plate.

Claims (3)

(57) [Claims] A dust control plate (19) for controlling the opening and closing of a dust outlet (13) formed at the end of a wind selection unit (7) is provided. An operation detecting mechanism 21 for detecting an ascending operation of the reaper A is provided.
When the cutter 21 detects the raising operation of the mowing unit A, the threshing unit B is configured to operate the dust control plate 19 to close the dust outlet 13 while maintaining the horizontal posture. Threshing sorting control equipment in combine harvesters. 2. A dust feeding control plate 24 for controlling the feeding of the processed material is provided in the handling room, and the raising operation of the cutting unit A when the cutting operation of one stroke is completed and the cutting operation of the next stroke is started. When the operation detecting mechanism 21 detects the raising operation of the reaping unit A, the threshing unit B moves the dust sending control plate 24 to the feed resistance side while maintaining the horizontal posture. A threshing / sorting control device in a combine having a related configuration. 3. A dust control plate 19 for controlling the opening and closing of a dust outlet 13 formed at the end of the wind selection unit 7; An operation detecting mechanism 21 is provided for detecting the raising operation of the reaping unit A when the reaping operation in one stroke is completed and the process shifts to the reaping operation in the next stroke. When the operation detecting mechanism 21 detects the raising operation of the reaping unit A, The threshing unit B is configured so that the dust control plate 19 operates to close the dust discharge port 13 while maintaining the horizontal posture, and the dust feed control plate 24
A threshing / sorting control device in a combine, wherein the threshing / sorting control device is configured to operate on the feed resistance side.