JPS5913165B2 - Waste straw processing equipment in combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a first processing state in which the waste straw sent out from the threshing section is sent to a cutter to be shredded and discharged to the field;
The present invention relates to a combine harvester having a mechanism for switching the waste straw treatment state to a second treatment state in which long culms are discharged into the field.

Conventionally, the straw removal processing state switching mechanism of this type of combine harvester has been one that simply switches the processing state arbitrarily by manual operation, or one that counts the number of times the dropper is released, as shown in Japanese Utility Model Application Publication No. 132581/1981. It is known that the processing state is manually switched according to the display.

However, all of these systems rely on manual operation, which means that people forget to switch, or are distracted by operating the aircraft and the timing of the switch shifts, resulting in the shredded straw being spread across the entire field. In addition to the inconvenience of distributing the waste straw evenly and making it difficult to release long culm waste straw regularly and orderly, it is necessary to constantly be aware of the switching operation of the waste straw processing state while operating the machine. However, this method also has the disadvantage of placing a psychological burden on the operator of the aircraft and an operational burden of performing the switching operation at the same time as the aircraft control operation.

The technical problem to be solved by the present invention is to automatically switch the straw removal processing state without manual operation, and to do so without placing psychological or operational burdens on the operator of the aircraft. To provide a waste straw processing device capable of uniformly distributing cut straw over a field and releasing long culm waste straw in a state where subsequent recovery work is easy.

The technical means taken by the present invention to solve the above problems are a first processing state in which the waste straw sent out from the threshing section is sent to a cutter, shredded and released into the field, and a In the combine harvester, the waste straw processing state switching mechanism can be switched to a second processing state in which the removed straw is discharged to the field. The switched processing state is maintained from when the sensor starts detecting the next row of grain culms until it detects the end of a predetermined row of grain culms; An automatic switching mechanism is provided which is configured to switch to a different processing state from the previously maintained processing state when the end of the grain culm row is detected. The effects of the above technical means are as follows: If the machine is moving along a row of shell culms and discharging the waste straw as shreds or long culms, the processing state is maintained until it reaches the end of the row of shells, and the processing state is maintained until the end of the row of shells is reached. When the sensor detects the end of the row of shell culms, the straw removal processing state switching mechanism is activated to switch to a processing state other than the above-mentioned processing state, and the processing is continued while maintaining the other processing state. When the work is continued and the end of a predetermined row of husk culms is detected thereafter, the straw removal processing state switching mechanism is operated so that the processing state is changed to a processing state different from the processing state maintained until then. As always, the processing state is alternately and repeatedly switched between the first processing state and the second processing state in relation to the detection result of the end of a predetermined culm row.

The above action provides the following effects.

■ The waste straw processing state can be automatically switched between shredding and scattering on the field and discharging down to -1 long straw onto the field, so there is no need to forget to switch or lag the timing. Of course, there is no need for the pilot to have to carry out the operational burden of switching processing states or the psychological burden of having to keep reminding himself not to forget the switching operation, and the pilot can concentrate on operating the aircraft and perform comparisons. It has the advantage of being easy to maneuver.

■ Since the automatic switching of the straw removal processing state is performed based on the detection result of the end of a predetermined husk row, it is assumed that the processing state is switched based on the operation of a timer device, for example, and compared with this. Not only can the shredded straw be uniformly discharged into the field, but all the discharged long culm straws are arranged in an orderly manner from one end of the culm row to the other, so they are not irregularly distributed. There is an advantage that the collection work itself is easier than when collecting discharged long culm waste straw that is part way to the middle of the culm row.

Embodiments of the present invention will be described below with reference to the drawings.

When the solenoid S is inactive, the waste straw sent from the threshing section 1 of the combine to the rear side of the machine via the feed chain 6 is swung downward by its own weight, and when the solenoid S is activated, it is electromagnetically attached. By swinging upward against gravity, the feed chain 6 is fed into a first processing state in which it is fed into a cutter 2 installed at the lower end of the feed chain 6, shredded and discharged into the field, and A waste straw processing state switching mechanism 3 is provided near the end of the feed chain 6, which is capable of switching to a second processing state in which the long straw is discharged into the field.

This switching mechanism 3 includes a shielding plate 3c, one end of which is pivotally supported on the fuselage body, at the end of a rod 3b connected to a magnetic body 3a slidably inserted into a solenoid S. The middle part of the closing plate 3c and the middle part of the cutter upper opening opening/closing plate 3d pivotally supported on the machine body are pivotally connected to each other via a connecting rod 3e, and the other end of the closing plate 3c is , is configured to be located near the upper end of the outer wall 2a of the cutter 2 in the first processing state.

On the other hand, the lateral side of the aircraft near the ground on the uncut field side was forcefully swung backwards by contacting the row of uncut husk culms, and the forced oscillation was released after passing through the end of the culm row. At this point, the sensor 4 is pivoted forward by about 90 degrees by a tension spring 7 and a stopper 8 fixed to the fuselage.

A ratchet gear 9 that rotates independently of the sensor 4 is pivotally supported on the pivot shaft of the sensor 4, and a ratchet pawl 10 pivoted on the base side of the sensor 4 is configured to be able to engage with the ratchet gear 9. The ratchet gear 9 is rotated only in one direction (arrow A direction) only during forward swinging based on the detection of the end of the culm row, and the small diameter gear 11 is provided concentrically with the ratchet gear 9 in a state of integral rotation. The engaging large-diameter gear 12 and the cam body 13 fixed thereto are moved only in one direction (direction of arrow B) by about 4
Rotate 5 degrees.

The cam body 13 has a large diameter part 13a and a small diameter part 13b formed at 180 degrees each, and the support rod 5b of the roller 5a, which is pressed into contact with these through a bullet (not shown), slides in the longitudinal direction. The roller -5a can be freely configured, and the large diameter portion 13
b, the switch 5C connected to the solenoid S via a lead wire is configured to close.

That is, these 5a to 5c and the solenoid S constitute the automatic switching mechanism 5 of the waste straw processing state switching mechanism 3.

Therefore, when the planted husks in the field are harvested and threshed by mowing around the edges of the combine harvester, the cam body 13 is activated every time the sensor 4 detects the end of the grain culm row four times, that is, every time the combine goes around once. After half a turn, switch 5c from open to closed, or vice versa, and switch the waste straw processing state switching mechanism 3.
automatically switches from the first processing state to the second processing state or vice versa.

Therefore, as shown in Fig. 3, the waste straw after threshing is released onto the field alternately in the form of shredded straw and long culm-shaped straw in a rectangular concentric shape.

Reference numeral 14 denotes a dropper that, when a certain weight of long culm waste straw is accumulated, swings downward and releases it into the field, and returns to a horizontal position after being released.

FIG. 4 shows another embodiment of the automatic switching mechanism 5, in which the sensor 4
A pivot point and a contact point 5d provided near it.

5d is configured so that it can be connected when the sensor 4 swings forward, and both contacts 5d and 5d are connected to a permanent magnet V attached to a solenoid valve V for switching forward/reverse hydraulic pressure feeding direction via a counter circuit 5e.
It is configured so that the same waste straw treatment state switching mechanism 3 as above is switched by the expansion and contraction of the cylinder 5g connected to the excitation solenoid 5f wound around the pump P and connected to the pump P via the solenoid valve V. The counter circuit 5e
is configured to output once every four inputs based on the forward swing of the sensor 4, and in a state where the voltage is switched between forward and reverse, thus producing the straw discharge state as shown in Fig. 3, similar to the above. do.

The straw removal processing state may be switched every time the sensor 4 detects the end of the culm row once or twice, which is suitable for reciprocating mowing.

Moreover, in any case, by interposing another switch in the middle of the electric circuit and turning it off, the waste straw treatment state switching mechanism 3 can be changed.
It would also be nice to be able to switch between them manually.

Furthermore, the reaping section itself may be used as the sensor 4.

In other words, when passing through the end of the culm row, exiting to the single-phase headland, and turning around to start reaping, the reaping section is normally raised immediately after passing the end. It is raised to function as a grain culm row end detection function.

[Brief explanation of drawings]

The drawings show an embodiment of the waste straw processing device for a combine harvester according to the present invention, in which Fig. 1 is a vertical sectional side view of the main part, Fig. 2 is an enlarged plan view of the main part, Fig. 3 is an explanatory diagram of the working state, and Fig. 4 0 is a schematic diagram of main parts according to another embodiment 0 1... threshing section, 2... cutter, 3...
...Discharged straw processing state switching mechanism, 4...Sensor, 5-0.・・・Automatic switching machine

Claims (1)

[Claims] 1. The waste straw sent out from the threshing section 1 is transferred to the cutter 2.
In a combine harvester that has a discarded straw processing state switching mechanism 3 that can switch between a first processing state in which the straw is sent to the field, shredded and discharged to the field, and a second processing state in which the straw is discharged to the field as a long culm. The straw processing state switching mechanism 3 is automatically switched based on the detection result of the end of the grain culm row by the sensor 4 attached to the machine body, and the straw processing state switching mechanism 3 is switched automatically based on the detection result of the end of the grain culm row by the sensor 4 attached to the machine body. The switched processing state is maintained until the end of the grain culm row is detected, and when the predetermined end of the grain culm row is detected, the processing state is switched to a different processing state from the maintained processing state. A waste straw processing device for a combine harvester, characterized in that it is provided with an automatic switching mechanism 5 configured to operate. 2. The waste straw processing device in a combine harvester according to claim 1, wherein the automatic switching mechanism 5 is configured to operate when the sensor 4 detects the end of the culm row four times. 3. The waste straw processing device in a combine harvester according to claim 1, wherein the automatic switching mechanism 5 is configured to operate when the sensor 4 detects the end of the culm row once.