JP3044733B2 - Threshing and sorting equipment for combine harvesters - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a threshing / sorting device such as a combine and the like, which changes and controls a sorting wind and a sorting gap of a sorting rack of an oscillating sorting shelf according to a vehicle speed. .

(Prior art and problems to be solved by the invention) By changing the number of rotations of the sorting machine and the clearance of the sorting rack of the swinging sorting shelf according to the vehicle speed, the sorting ability is adjusted and controlled according to the amount of harvested grain culm. If the vehicle speed changes,
Immediately, the rotation speed of Karino and the clearance of the sorting rack were switched,
In the vicinity of the switching boundary, control hunting is likely to occur with a change in the engine speed, and control is likely to be unstable.

(Means for Solving the Problems) A first invention is a threshing / sorting device 4 which receives threshed in a threshing device 1 on a rocking sorting shelf 2 and sorts while rocking and transporting and blowing by Karino 3. In accordance with the vehicle speed of the traveling device 5, the rotation speed of the Karamin 3 is controlled to be high or low, and the clearance of the sorting rack 6 of the swing sorting shelf 2 is switched between wide and narrow. A threshing / sorting device, such as a combine, is configured by setting the rotation speed of the car to 3 narrow and the switching speed of the sorting rack 6 wide to a high gap with respect to the switching speed L to the narrow gap of the sorting rack 6.

In the second invention, when the switching vehicle speed L is detected, the rotation speed of Karino 3 and the clearance of the sorting rack 6 are reduced immediately,
The structure of the threshing / sorting apparatus for combine and the like according to the first aspect of the present invention, wherein upon detection of the switching vehicle speed H, the rotation speed of the carving 3 and the clearance of the sorting rack 6 are widened immediately. I do.

(Operation) The grain rod that is cut while moving forward by the drive of the traveling device 5 is supplied to the threshing device 1 and threshed. The thresh is oscillated and sorted by the oscillating sorting shelf 2 and is subjected to a sifting wind generated by the rotation of the Karamin 3 to be sifted.

The higher the vehicle speed, the higher the threshing efficiency of the stalks.
In addition to increasing the number of rotations of the Karamin 3 and widening the gap between the sorting racks 6 of the swing sorting shelf 4, the swing sorting efficiency of thresh is increased. At this time, when the vehicle speed changes from the low speed range to the constant high speed range H, the rotation speed of the car is automatically switched from low A1 to high A2, and the gap of the sorting rack 6 is narrowed to B1.
Is switched to wide B2.

Further, when the vehicle speed is reduced from the high speed region to the low speed region, the rotation speed of the Karamin 3 is automatically switched from the high A2 to the low Al by changing to the low speed region L lower than the high speed region H. The gap of the sorting rack 6 is switched from wide B2 to narrow B1.

Furthermore, in the second invention, when the switching vehicle speed L is detected, the rotation speed of the car 3 and the clearance between the sorting racks 6 are reduced immediately.
And the gap between the sorting racks 6 is widened.

(Effects of the Invention) The rotation speed of the carving 3 and the gap between the sorting racks 6 of the swing sorting shelf 2 that are switched and controlled by the vehicle speed as described above are different depending on whether the vehicle speed is in the high speed range or the low speed range. Since there is a constant difference between the high speed H and the low speed L at the boundary of the switching control, the control can be stabilized by the hysteresis phenomenon.

In particular, as an effect of the second invention, even if the vehicle speed is sharply increased, the rotation speed of the Karamin 3 is immediately increased by detecting the vehicle speed,
Also, since the gap between the sorting racks 6 is widened, even if the amount of material to be treated in the threshing apparatus 1 increases, it is possible to immediately cope with it.
The first sorting failure can be prevented. In addition, even if the vehicle speed is rapidly reduced, the rotation speed of Karamin 3 is reduced immediately upon detection of the vehicle speed, and the gap between the sorting racks 6 is reduced.
Even if the amount of material to be treated in the threshing device 1 is small, it can be dealt with immediately, preventing the third scattering, and improving the grain recovery rate.

(Example) In the figure, a combine is illustrated, and an engine 8 and a vehicle 8 are provided on a vehicle body 7 having a traveling device 5 in the form of a crawler.
A cockpit 9 and cockpit 10 are provided, and a front support frame is provided.
A threshing device 1 that supports a reaper frame 13 of a reaper 12 on the upper part 11 so as to be freely rotatable up and down, and on the rear, threshing while transferring and transferring the grain stalks that are reaped and transferred by the reaper 12, and A grain tank containing threshing grains selected by threshing by this threshing apparatus 1
It has 14 mag.

The reaper frame 13 is provided with a lift cylinder 15 that is expanded and contracted by hydraulic pressure between itself and the vehicle body 7, and is moved up and down around an upper support shaft 16 by expansion and contraction of the lift cylinder 15 to adjust and control the reaping height. And The reaping device 12 is provided with a weeding frame 18 and a cereal stem raising device 19 in front of the cutting blade device 17 for cutting the cereal stem, and guides the cereal stem to the cutting posture, and the upper cereal stem collecting and feeding device 20. The root portion of the grain stem is harvested by the cutting blade device 17 while being collected. At the rear part of the collecting device 20, there is provided a grain culm transfer device 22 which sandwiches the stock side and the spike side of the harvested grain culm and transfers it to the threshing room 21 of the threshing device 1 on the upper rear side. A grain stalk sensor 23 that detects that the grain stalk to be harvested is located in the collection device 20 or the like is provided at the front of such a reaper 12.
Is provided.

The traveling device 5 has a traveling transmission case 25 equipped with a traveling transmission device for driving and driving the sprocket 24 of the crawler from the engine 8. The traveling transmission case 25 obtains rotation from an internal traveling transmission device to detect a vehicle speed. A vehicle speed sensor 26 is provided.

The threshing sorting device 4 of the threshing device 1 is located below the threshing room 21.
While rocking back and forth, the threshing material received on the upper surface of the sorting rack 2 is transported toward the rear dust outlet, and has a rocking sorting shelf 2 for rocking sorting. The angle can be controlled by the control motor M1 via the control rack M1, and the inclination angle of each of the sorting racks 2 can be changed to make the gap 28 between the front and rear sorting racks 2 wider, B2 and B1 narrower. In the case of B2 in which the gap 28 is wide, the swing sorting processing amount of the thresh becomes larger than in the case of B1 in which the gap 28 is narrow. Reference numeral 29 denotes a potentiometer indicating a control amount controlled by the control motor M1.

The Karamin 3 is provided at the front of a sorting air path formed below the swing sorting shelf 4, and is belt-driven by a split pulley 30.
By changing the pulley diameter of the split pulley 30, a continuously variable speed change is possible. The control of the number of rotations of the Karino 3 is performed by the rotation of the control motor M2 via the link mechanism 31 and the split pulley 30.
Are linked to change the pulley diameter. 32 is a potentiometer for detecting this shift position.

Threshing control is performed by a controller 33 having a microcomputer.On the input side of the controller 33, a threshing control switch 34, a Karamin rotation setting device 35,
Sorting rack gap setting device 36, grain sensor 23, vehicle speed sensor 2
6. A Karamin control motor M2 having a Karamin potentiometer 32, a rack gap potentiometer 29, an engine rotation sensor 26, and the like, and on the output side, switching and controlling the rotation of the Karamin 3 between a high speed range A2 and a low speed range A1. Karino relays R2, R1, and
It has rack gap relays R3, R4, etc. of a rack gap control motor M1 for switching and controlling the sorting rack gap 28 between a wide interval B2 and a narrow interval B1.

The threshing control switch 34 controls the control power of the controller 33.
It turns ON and OFF. Karino rotation setting device 35
Set the rotation speed (wind power) to high A2 and low A1.
In this configuration, while being output by the Karino relays R2 and R1 and driving the Karamin motor M2, the Karino potentiometer 32 detects and performs feedback control to switch between high A2 and low A1.

Similarly, the sorting rack gap setting device 36 has a configuration in which the rack gap 28 is switched between the wide B2 and the narrow B1 by the rack gap relays R3 and R4 and the rack gap potentiometer 29.

The relationship between the vehicle speed sensor 26, the Karino control motor M2, and the rack gap control motor Ml is shown in FIG. 5, when the vehicle speed rises from the low speed range and reaches the high speed range H, the high speed range H is changed to the vehicle speed. The detection by the sensor 26 causes the control motor M2 to control the switching of the Karino 3 to the high A2, and at the same time, the control motor M1 controls the switching of the rack gap 28 to the wide B2. Conversely, when the vehicle speed reaches the low-speed range L from the high-speed range, the low-speed range L is detected by the vehicle speed sensor 26, thereby similarly controlling the switching of the Karino 3 from high A2 to low Al.
The rack gap 28 is switched from wide B2 to narrow B1.

Here, the vehicle speed is maintained at an appropriate speed difference as H> L. For example, H = 0.55 m / sec and L = 0.45 m / sec.

Therefore, even if the vehicle speed changes from low speed to high speed C and the set low speed range L is detected, Karin 3 is at low speed A1 and the rack gap 28 is at narrow B1 and does not change. When the area H is detected, the switches 3 are controlled to switch from low A1 to high A2, and the rack gap 28 is switched from narrow B1 to wide B2. Conversely, when the vehicle speed changes from high speed to low speed D, even if the vehicle speed is detected in the high speed range H, Karamin 3 is at high A2 and the rack gap 28 is high.
Is in the wide area B2 and does not change, and when it is detected that the low speed range L has been reached, the switching of the karino 3 is changed from high A2 to low A1, and the rack gap 28 is switched from wide B2 to narrow B1. For this reason, the control boundary has a predetermined width = HL from the low speed range L to the high speed range H when the vehicle speed increases and decelerates. The control output is not hunted by the detection by 26.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a side view, FIG. 2 and FIG. 3 are side views showing some mechanisms, FIG. 4 is a control block diagram, and FIG. FIG. (Explanation of reference numerals) 1 threshing device 2 rocking sorting shelf 3 Karamin 4 threshing sorting device 5 traveling device 6 sorting rack

Claims (2)

(57) [Claims] 1. A threshing / sorting device (4) that receives threshed by a threshing device (1) on a swing sorting shelf (2) and sorts while swinging and blowing by Karino (3). High and low rotation speed of Karamin 3 and rocking sorting shelf 2
The switching speed of the sorting rack 6 is widened and narrowed, and the switching speed of the Karamin 3 rotation is high and the switching speed of the sorting rack 6 is narrow. Threshing / sorting device such as a combine that sets the vehicle speed H to a higher level. 2. When the switching vehicle speed L is detected, the rotation speed of the car rack 3 and the clearance of the sorting rack 6 are immediately reduced, and when the switching vehicle speed H is detected, the rotation speed of the car body 3 and the sorting rack are immediately increased. The threshing / sorting apparatus for combine and the like according to claim 1, wherein the gap of (6) is widened.