JPS6312656Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic direction control device for automatically causing a combine harvester to follow grain culm rows.

Generally, in combine harvester work, there are two types of work: row mowing, which involves working along the rows, and so-called horizontal mowing, which involves working in a direction perpendicular to the rows. When using the right side direction sensor, especially when the combine width of cut is wider than the total width between the rows of grain culms, the vibration of the machine may cause the rows of grain culms on the left to be cut or left uncut, leading to the next crop being cut. This makes it difficult for the right direction sensor to follow the rows of grain culms during this work. Therefore, during row mowing work, it is preferable to use the left direction sensor provided on the divider section on the uncut side to follow the rows of grain culms on the left side of the cutting width. Also, when using a combine harvester for horizontal mowing,
Since the grain culm rows are not aligned, the direction cannot be controlled using the left direction sensor, and it is necessary to control the direction using the right direction sensor that follows between the cut and uncut sections.

Therefore, as shown in FIGS. 1 and 2, on the left and right dividers 3a and 3b of the combine 1,
An automatic direction control device has been proposed which includes left and right direction sensors 7, 8 having inwardly protruding sensor arms 5, 6, respectively. Left sensor 7
When the sensor arm 5 does not come into contact with the grain culm 10, it is rotated to the A position by the spring 11, and the limit switch 12 is actuated to issue a clockwise rotation command, and the arm 5 comes into close contact with the grain culm 10 and is rotated to the A position. When the arm 5 is properly installed in the grain culm and is in the ``ro'' position, the limit switch 13 is actuated to issue a left turning command.
does not operate and does not issue a turn command. In addition, when the sensor arm 6 does not come into contact with the grain culm 10, the right sensor 8 is rotated to the C' position by the spring 15, actuating the limit switch 16 and issuing a left turning command, and the arm 6 When the limit switch 17 is rotated to the A' position in close contact with 10, the limit switch 17
When the arm 6 is in proper contact with the grain culm and is in the RO' position, both switches 16 and 17 do not operate and do not issue a turning command. Note that 10' indicates the already cut grain culm. Then, the automatic direction control device uses the right sensor 8 as a reference.
According to the sensor's straight-ahead command B' and right-turn command A', the combine harvester 1 is controlled to go straight and to the right, respectively, and according to the left-hand turn command C' of the right-hand sensor 8, the left-hand sensor 7 is activated. The left sensor 7
The circuit is set to control the combine harvester 1 in the corresponding direction based on the
-Refer to No. 159544). As a result, during row cutting, especially when the cutting width of the combine harvester 1 is wider than the total width between the grain culm rows as shown in FIG. 1A, the right sensor 8 is in the left turning command state. So,
The control is based on the left sensor 7, and since the space between plants is narrow during horizontal mowing, the left sensor 7 is always in the left turning command C state, so the right sensor 8 issues the left turning command C'. Immediately, the combine 1 is turned to the left and, based on the right-hand sensor 8, the combine 1 is controlled along the grain culm 10 at the cut end.

By the way, there is no problem with the automatic direction control device if the rows are arranged as shown in FIG. Even if the arm 5 is in the A position without contacting the grain culm and the switch 12 for clockwise rotation command is ON, the arm 6 of the right sensor 8 is in the B' position with moderate contact with the grain culm. In this case, combine 1 has right sensor 8.
Go straight based on. However, in this state, if the combine 1 shifts slightly to the right, the arm 6 will move to the H' position and the left turn command switch 16 will be activated.
It turns on and activates the left sensor 7, but at this time,
The switch 12 of the left sensor 7 has a timer that configures a predetermined dead time in which it does not operate due to the spacing of plants, etc., so when the switch 16 is turned on, the switch 12 of the left sensor 7 is turned on, and the timer is activated. The combine harvester 1 is not able to follow the automatic tracking mechanism and moves off to the left, and the left divider 3a grabs the row on the left side of the cutting width, pushes down or cuts off the adjacent row on the left, and causes hunting in the missing stroke. This will cause problems.

Therefore, the present invention is designed to immediately control the direction of the combine 1 in the right direction without using a timer, even if the right sensor 8 is in the straight-ahead command B state, and the left sensor 7 is in the right turn command A state. Combine harvester 1 which is configured as follows and eliminates the above-mentioned drawbacks.
The object of the present invention is to provide an automatic direction control device.

Hereinafter, the present invention will be specifically explained based on Examples.

In FIG. 3, 20 is a main switch, 21 is a lever switch, and 22' is a grain culm detection switch. Also, 8
is the right sensor, whose left and right turning command switches 16 and 17 are connected to relays 25 and 26, respectively. Further, 7 is the left sensor, and its right and left turn command switches 12 and 13 are connected to relays 27 and 29, respectively. Also, 2
5a is a contact that is turned on when the relay 25 is energized, and contacts 27a and 29 are branched from the contact 25a and are activated by relays 27 and 29, respectively.
It is connected to timers 30 and 31 via a. Timers 30 and 31 are connected to relays 32 and 31, respectively.
33, and relays 32 and 33 can turn on contacts 32a and 33a, respectively. Contact 33a is connected to a left solenoid 35, which operates a solenoid valve to disconnect the clutch transmitting power to the left crawler. In addition, the contact 26 that is turned on when the relay 26 is energized
a, contact 32a turned ON by relay 32, or contact 27b turned ON by energization of relay 27;
A right solenoid 36 that operates to cut off the power transmission of the right crawler is connected through a normally closed contact 25b that is turned OFF when the relay 25 is energized and a normally closed contact 26b that is turned OFF when the relay 26 is energized. .

Since the present invention has the above-mentioned configuration, the sensor arm 6 of the right sensor 8 is large and can be attached to the grain culm 10.
When it comes into contact with and rotates to the A' position, the switch 1
7 is turned ON, therefore relay 24 is energized, and contact 2
6a turns on, the right solenoid 36 is energized, and the combine 1 is turned to the right (Fig. 5d,
(see e, f). Further, when the grain culm 10 is not in contact with the sensor arm 6 of the right sensor 8 and is in the C' position, the switch 16 is turned on and the relay 25 is energized, so that the left sensor 7 is activated.
That is, in this state, when the sensor arm 5 largely contacts the grain culm 10 and rotates to position C, the switch 13 is turned on and the relay 29 is energized, and the contact 29 is turned on.
a is turned on, the timer 31 is activated, and after a certain dead time, the relay 33 is energized, which causes the contact 33 to turn on.
Turn on the switch a to energize the left solenoid 35 and correct the direction of the combine harvester 1 to the left (see Figure 5b).
In addition, when the grain culm 10 rotates to the A position without contacting the sensor arm 5 and the switch 12 is turned on and the relay 27 is energized, the contact 27a is turned on and the timer 30 is activated, setting the total dead time. The rear relay 32 is energized, which turns on the contact 32a, energizes the right solenoid 36, and corrects the direction of the combine 1 to the right (see FIG. 5a). At this time, relay 2
Contact 27b is also turned on by energization of 7, but since relay 25 is energized, normally closed contact 25b is turned on.
It is in the OFF state, and the right solenoid 36 is not energized. Furthermore, the sensor arm 5 is connected to the grain culm 1.
0, both switches 12 and 13 are in the OFF state, and the combine harvester 1 moves straight (see Fig. 5c). In addition, the arm 6 of the right sensor 8 is in proper contact with the grain culm 10 and is in the low position, and both switches 16 and 17 are not turned on, and the arm 5 of the left sensor 7 is also in contact with the grain culm 1.
0, the combine 1 moves straight without turning on both switches 12 and 13 (see Figure 5i). Also, in this state, the sensor arm 5 rotates to the C position and the switch 13
Even if the relay 29 is energized by turning on the contact 25a
is in the OFF state, so the combine harvester 1 moves straight (see Figure 5h). Furthermore, the right sensor 8
When both switches 16 and 17 are not turned on, the arm 5 of the left sensor 7 rotates to the A position to turn on the switch 12, the relay 27 is energized and the contact 27b is turned on, and at this time, the relay 25 and Since both 26 and 26 are not energized, the normally closed contact 25
b and 26b are both in the ON state, and therefore, they are energized simultaneously with the ON of the right solenoid 36 or switch 12 without using a timer, and the combine 1 is immediately turned to the right (see FIG. 5g).

Next, another embodiment will be described based on FIG. 4.
In the above embodiment, as shown in Fig. 1B, it is preferable that the rows and the divider spacing are approximately the same, but as shown in Fig. 1A, the total width between the grain culm rows is It is not necessary if the cutting width is wide, and if there are many missing plants, combine 1
may shift to the right, causing the strip to become misaligned. Therefore, in this embodiment, the changeover switch 3
9 can be provided to disable the right turn circuit without a timer. In this case, when both switches 16 and 17 of the right sensor 8 are in the OFF state,
The combine moves straight regardless of the state of the left sensor 7.

As explained above, according to the present invention, even if the right sensor 8 is in the straight-ahead command state, if the left sensor 7 is in the right-turn command state, the combine 1 is immediately moved to the right without using the timer 30. Even if the row rows and the divider spacing are approximately the same, the unmown divider 3a can be reliably prevented from nibbling the row on the unmown side of the cutting width, and Hunting in the next stroke due to pushing down or cutting down one adjacent row can be prevented, and smooth and accurate directional control can be performed.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing the combine harvester which is the basis of the present invention, Fig. 2 is a schematic plan view showing its automatic direction control device, Fig. 3 is an electric circuit diagram according to the invention, and Fig. 4 is a part thereof. An electrical circuit diagram showing a modified embodiment, and FIG. 5 is a diagram showing the operation of the present invention. 1... Combine harvester, 3a... Uncut (left) side divider, 3b... Already cut (right) side divider, 7... Uncut (left) side sensor, 8... Already cut (right) side sensor, 12 , 17... Already cut (right) side turning command switch, 13, 15... Uncut (left) side turning command switch, 30... Timer.

Claims (1)

[Scope of utility model registration request] In a combine in which an uncut side sensor is provided in the uncut side divider section and a cut side sensor is provided in the cut side divider section, when the cut side turning command of the cut side sensor is performed, the uncut side sensor is Controls the direction of the combine harvester related to the command to the mowing side, and activates the uncut side sensor in accordance with the uncut side turning command of the already cut side sensor, and responds accordingly based on the uncut side sensor. The direction of the combine is controlled in the direction of the mowing side, and the direction of the combine is also controlled in the direction of the mowing side after a predetermined dead period after a predetermined dead time via a timer, at least when the direction of the already mowed side is directed. The combine is configured to move straight when the sensor commands to go straight and to turn to the uncut side, and to immediately control the direction of the combine to the cut side without using the timer when the uncut side sensor gives a command to turn to the cut side. automatic direction control device in a combined harvester.