JPH05153849A - Threshing and grading apparatus - Google Patents

Abstract

PURPOSE:To provide a threshing and grading apparatus having an oscillating grading shelf to grade grains under oscillation transfer of threshed product and capable of performing a proper grading by changing ratio of the grading air flows of different directions according to the threshing state. CONSTITUTION:The apparatus has a main winnower 3 sending air to the main grading air channel 2 directing from the part under an oscillation grading shelf 1 toward the upper downstream side and a subsidiary winnower 4 sending air toward the downstream side along the lower face of the oscillation grading shelf 1. The rotational ratio and the air flow ratio of the main and subsidiary winnowers 3, 4 are made to be changeable according to the threshed state detected by a threshing sensor A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing selection device and can be effectively used as a combine threshing device.

[0002]

2. Description of the Related Art In a mode in which an oscillating sorting shelf is provided as a threshing sorting device, a swinging cullet which blows upward from below the oscillating sorting shelf is provided for oscillating transfer sorting. When the amount of threshing is large and the amount of threshing is small, the amount of air is increased, and when the amount of threshing is small, it is necessary to reduce the amount of air to prevent scattering of the selected products. Since it is difficult to widely change and adjust the air volume of Kara Tsubo according to the amount of such threshing, the present invention, in addition to the main selection Kara Tsubasa, is particularly effective for small threshing. By providing a sub Kara that blows along the lower surface, and changing the rotation ratio between these main and sub Kara, or the air volume ratio,
It is intended to make a wide range of appropriate selections depending on the threshing condition.

[0003]

SUMMARY OF THE INVENTION According to the present invention, an oscillating sorting shelf 1 is provided for sorting grains while receiving them by oscillating and transferring them while swinging them.
Below the rocking sorting shelf 1 and the main Kara Minoh 3 that blows the main sorting air passage 2 toward the upper and lower sides, and the sub-jet that blows toward the lower side along the lower surface of the rocking sorting shelf 1. The Karasou 4 is provided, and the threshing / sorting device is configured so that the rotation ratios or the air flow ratios of the main and the sub Karasou 3 and 4 can be changed by the detection of the threshing sensor A that detects the threshing state.

[0004]

[Operation and effect of the invention] While threshing to be threshed in the threshing chamber is received on the upper surface of the rocking sorting shelf 1 and is rockingly transferred,
After being sorted into grains and straw debris, the grains are leaked from the swing sorting shelf 1 and separated into a sorting wind blown from the sub Kara Minor 4 and a sorting wind blown from the main Kara Minoh 3. Received and wind-selected. Since the sorting air from the sub Kara Minor 4 is blown toward the lower side of the swing transfer direction in a state almost along the lower surface of the swing sorting shelf 1, it mainly leaks from the swing sorting shelf 1. The lower and middle leaked grains are selected by wind, and the main Karato 3 to the main selection air passage 2
The sorting wind blown by the air blows the straw on the upper surface of the rocking sorting shelf 1 as well as the grains and the like selected by the sub-sorting wind while blowing the end portion of the rocking sorting shelf 1 upward and downward. Supports swing selection and transfer by allowing dust and the like to float.

The threshing sensor A detects the threshing state. For example, when it detects that the threshing amount is large, it increases the rotation speeds of the main Kara-mino 3 and the sub Kara-miso 4 and detects that the threshing-amount is small. Then, these rotation speeds are controlled to be low, but when the rotation speeds at this time increase, the increase ratio of the main Karako 3 is made larger than the increase ratio of the sub Kara4. In this way, by changing the ratio of the air volume by the main Kara-mitsu 3 to the air volume by the sub-Kara-mitsu 4 depending on the threshing quantity, the air quantity along the lower surface of the rocking sorting shelf 1 by the sub-Karano 4 does not change greatly, and especially the threshing quantity When the number of rocks is small, scattering of grains from the top of the rocking sorting shelf 1 is reduced, and when the amount of threshing is large, the end portion side of the rocking sorting shelf 1 is blown up from the main Karasu 3 through the sorting air passage 2. By increasing the air volume, it is possible to promote the floating and transfer of straw waste, etc., and maintain good and stable selection regardless of the amount of threshing.

[0006]

[Example] A threshing device used for a combine has a feed cylinder 7 on which a handling cylinder 5 is rotatably mounted on a shaft 6.
And threshing rod 8 for threshing while holding and transporting the root portion, threshing chamber 9, processing chamber 11 having processing drum 10 inside, dust collecting chamber 13 having suction dust collector 12, and threshing culm. An culvert device 14 for sending is provided. Reference numeral 15 is a threshing net stretched below the threshing chamber 9.

In addition, under the threshing chamber 9 and the dust-exhausting chamber 13, etc., a swinging sorting shelf 1, main, sub-massages 3, 4, sorting air passages 2, and the first gutter 16, second gutter 17 etc. Is provided. The rocking / sorting shelf 1 extends from below the end of the threshing net 15 to below the discharge port 18 at the end of the threshing chamber 9 and below the suction / dust collector 12 with chaff sheaves arranged at appropriate intervals. 19, a stroll rack 20 at the end, a gren sheave 21 extending below the chaff sheave 19, and an inclined plate 2.
The eccentric shaft 24 at the rear end is rotated to oscillate back and forth to transfer the grain received on the upper surface to the straw outlet 25 side at the end of the Straw rack 20 while the grain is chaffed in the chaff sheave 19. Sorting is performed while leaking through the gaps such as Strawac 20 and Strawac 20.

On the upper side of the rocking sorting shelf 1, a threshing net 1
5 is provided with a transfer shelf 27 for receiving the grain that has leaked from the side of the supply port 26, and an auger 29 for arranging a cutting blade 28 is provided side by side on the transfer shelf 27. It is configured to transfer the grain removal to the upper surface of the starting end portion of the swing selection shelf 1. The main Karin 3 is located on the lower side of the swing sorting shelf 1 on the upper side,
From the top of the first trough 16, the Glensieve 21 is blown upwards on the lower side, and the end portion of the chaff sheave 19 is communicated with the selection air passage 2 which is blown upward on the lower side.
The grain removal that leaks through the grain sheave 21 and the grain sheave 21 is wind-selected, and the straw debris on the chaff sheave 19 and the straw rack 20 are floated up for sorting. As a result, the first sized grain is made to flow down to the first gutter 16 and the second one is made to flow down to the second gutter 17, and the first one is taken out by the maize lifting machine. Is reduced to the threshing chamber 9 by the fried machine 26 for processing.

The shaft 30 of the main Karotsu 3 and the shaft 31 of the sub Kara 4 are interlocked from the drive shaft 32 by belts 33, 34, 35, etc., and the main Kara 3 is connected to a continuously variable pulley 36 of the shaft 30. It is transmitted by the tension force of the tension pulley 37 of the wound belt 34, and the continuously variable transmission pulley 36 is expanded and contracted by the rotation of the transmission cam 38 to continuously change the speed.
In addition, the auxiliary Kara 4 is the continuously variable pulley 3 on the shafts 30 to 31.
Tension pulley 40 of belt 35 wound around 9
This continuously variable pulley 3 is transmitted by the tension force by
9 is expanded / contracted by the rotation of the speed change cam 41 to continuously change the speed. Each of the augers 29 includes a drive shaft 32 and a belt 4
2 and a lateral shaft 43 and the like.

When the drive shaft 32 is rotated by tensioning the tension pulleys 37 and 40, the belts 33 and 3 are rotated.
The main Karasu 3 shaft 30 is rotated through 4 and further this shaft 30
The sub Kara Minor 4 shaft 31 is rotated via the belt 35 from.
The speed change cam 3 of each of the above continuously variable speed change pulleys 36 and 39.
The operations of 8 and 41 are performed by the speed change motor M, and the forward and reverse driving of the speed change motor M causes the speed change cam 38 to move the speed change cam 38 through the crankshaft 42 and the link 43.
The split pulley diameter of the continuously variable pulley 36 can be changed by rotating the pulley about 0. Further, the split cam diameter of the continuously variable shift pulley 39 can be changed by rotating the shift cam 41 around the shaft 31 from the crankshaft 42 via the link 44.

The relationship between the rotation angle of the speed change motor M and the speed ratio of the continuously variable speed change pulleys 36, 39 by the speed change cams 38, 41 is set to a specific relationship. The threshing sensor A is
Although the amount of threshing that leaks from the threshing net 15 is provided as the flow rate sensor A1 by the infrared sensor, it may be provided as the flow rate sensor A2 that detects the flow rate supplied from the transfer shelf 27 by the auger 29 to the swing sorting shelf 1. Also, this auger 2
It may be provided as the load sensor A3 that detects the driving load acting on the drive unit 9. Further, the detection by the threshing sensors A at such plural places may be used as the input value to the controller CPU having a microcomputer.

The relationship between the grain flow rate Q and the air volume V is shown in FIGS.
For example, when threshing rice, as shown in FIG.
The air flow rate change line B1 and the air flow rate change line C1 of the sub Kara No. 4 are set in advance, and the air flow rate V is controlled by shifting the flow rate according to the detection of the flow rate Q of the threshing sensor A. Further, in the threshing of wheat, the air flow rate change lines B2 and C2 as shown in FIG. 5 are set. In the case of wheat, the amount of straw waste on the rocking sorting shelf 1 is larger than that of rice, but the amount of grain is not so large. Therefore, while the rotation of the sub-tower 4 is increased to prevent the straw waste from the chaff sheave 19 and the Glen sieve 21 from dropping, the rotation number of the main toot 3 is not increased so much and the grain from the upper surface of the swinging selection shelf 1 is increased. Can be reduced.

For rice and wheat, the position of the threshing sensor A may be selected and switched so as to detect it at an appropriate position.

[Brief description of drawings]

 The figure shows an embodiment of the invention.

FIG. 1 is a side sectional view.

FIG. 2 is a front sectional view.

FIG. 3 is a partial plan view.

FIG. 4 is a grain flow rate Q-air volume V line graph during rice threshing.

FIG. 5 is a grain flow rate Q-air flow rate V line graph during barley threshing.

FIG. 6 is a control block diagram.

[Explanation of symbols]

 1 Swinging sorting shelf 2 Main sorting air duct 3 Main Kara Minor 4 Sub Kara Minor A Threshing sensor

Claims (1)

[Claims] 1. An oscillating sorting shelf (1) below an oscillating sorting shelf (1) for picking up and sorting grains while receiving and removing the grains and oscillatingly transferring them.
A main Kara Minoh 3 that blows through the main sorting air duct 2 that faces upward and downward,
A threshing state is detected along the lower surface of the rocking and sorting shelf 1 with a sub Kara Minoh 4 that blows toward the lower side, and the threshing state is detected by the rotation ratio or air volume ratio of these main and sub Kara Minors 3, 4. Threshing sensor A
A threshing selection device that can be changed depending on the detection of.