JPS6245529Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a direction sensor device for a large combine harvester that cuts four or more rows.

In general, in combine harvester operation, there are two types: row mowing, which is carried out along the rows, and so-called horizontal cutting, which is carried out in a direction perpendicular to the rows. When using the right direction sensor, due to the cutting width, the grain culm row on the left side may be cut or left uncut due to machine shake, making it difficult to follow the grain culm row with the right direction sensor during the next operation. I was doing it. Therefore, during row mowing work, it is preferable to follow the rows of grain culms on the left side of the cutting width using a leftward direction sensor provided behind the divider on the uncut side.
In addition, when a combine harvester performs horizontal mowing work, the rows of grain culms are not aligned, so the left direction sensor cannot control the direction, and the right direction sensor, which follows between the cut and uncut sections, is used to control the direction. It is necessary to control the direction. For this reason, combine harvesters equipped with direction sensors on both the left and right sides have been proposed.
The switching is performed manually, which makes the operation when turning the combine harvester, which requires many operations, even more complicated, and there is a risk of erroneous operation.

Therefore, in the present invention, a first sensor is provided on the divider frame at the side end of the cut area, and the first sensor has two switches for turning commands for the cut area side and the uncut area side. In the frame
Second and third sensors each having one switch for commanding turning to the mowed area side or uncut area side are provided, and based on the signals from these sensors, the second and third sensors
If the switches of both sensors are on, the first sensor will control, and if the first sensor's switch for directing direction to the already mown area is on, it will be controlled with priority according to that command, and in other cases. is configured to be controlled by a second sensor and a third sensor, which automatically switches the sensors according to the working conditions, eliminating the above-mentioned drawbacks, and also eliminating the possibility that the combine harvester will come off to the side of the uncut area, resulting in uncut areas. It is an object of the present invention to provide a direction sensor device for a combine harvester that prevents this from occurring.

Hereinafter, the present invention will be specifically explained based on an embodiment shown in the drawings.

As shown in Fig. 1, the combine 1 has a large number of dividers 2..., cutting blades 3, and a grain culm conveying device 5 at the front of the machine, and a driver's seat 6 is arranged on the right side. There is. A first sensor 8 is provided on the divider frame 7a supporting the divider 2a at the right end, that is, the end of the cut section A side, and a sensor bar 10 is provided on the sensor 8 so as to protrude to the left side. There is. Further, a second sensor 11 is provided on the divider frame 7b that supports the second divider 2b from the left end on the uncut section B side, and the sensor 11 has a sensor bar 12 that protrudes to the left. There is. Furthermore, the divider 2c at the left end, that is, the end of the uncut area B side.
A third sensor 13 is provided on the divider frame 7c supporting the sensor 13.
has a sensor bar 14 projecting to the right, so that the sensor bars 12 and 14 are placed opposite each other with a distance slightly larger than the diameter d of the stock 15. As shown in FIG. 2, the first sensor 8 has a sensor bar 10 biased clockwise by a spring 16, and two limit switches 17, 18 by a cam 10' provided at its rotating part. can be touched and activated. That is, when the sensor bar 10 is in the rotation range a, the limit switch 17 for left rotation command is turned on, and when it is in the rotation range c, the limit switch 18 for right rotation command is turned on. In addition, if it is in the rotation range b between them, both limit switches 1
Both 7 and 18 are in the OFF state. Further, in the second sensor 11, the sensor bar 12 is connected to the spring 20.
When the bar 12 rotates against the urging force, the limit switch 21 is activated by the cam 12'. Further, in the third sensor 13, a sensor bar 14 is biased counterclockwise by a spring 22, and when the bar 14 rotates against the biasing force of the spring 22, a limit switch 23 is activated by a cam 14'. It is configured as follows.

Next, the electric circuit of this embodiment will be explained based on FIG. The circuit passes through a main switch 25 and a side lever switch 26, and relays 17', 18', 21', 2 which are activated by turning on limit switches 17, 18, 21, 23, respectively.
A number of parallel circuits with 3' are connected.
Also, a normally open relay contact 17'a is turned ON by the operation of the relay 17', or a normally closed relay contact 21'a is turned OFF by the operation of the relay 21', and is turned OFF by the operation of the relay 18'. It is connected via a normally closed relay contact 18'a to a normally open relay contact 23'a which is turned ON by the operation of a relay 23', and the contact 23'a is connected to a solenoid 27 for operating the left clutch of the hydraulic control valve. It has a parallel circuit connected to. Further, a normally open type relay contact 21'b is turned ON by the operation of the relay 21', a normally closed type relay contact 23'b is turned OFF by the operation of the relay 23', or a normally closed type relay contact 23'b is turned OFF by the operation of the relay 18'.
A solenoid 28 for operating the right clutch of the hydraulic control valve via a normally open relay contact 18'b that is turned on.
It has a parallel circuit connected to. Note that 30 in the figure is a battery.

Since the present embodiment has the above-described configuration, as shown in FIG. 14 or not both. Now, the sensor bar 12 of the second sensor 11
When the stock 15 comes into contact with the cam 12' and the switch 21 is turned ON, the relay 21' is operated and the contact 21'a is turned OFF and the contact 21'b is turned ON.
become. At this time, even if the sensor bar 10 of the first sensor 8 is not in contact with the stock and the switch 17 is in the ON state, the sensor bar 14 of the third sensor 13 is not in contact with the stock, and the relay contact 23' a
is in the OFF state, so the left clutch operating solenoid 27 is not energized. Also, since the normally closed limit switch 23'b is in the ON state, the current flows as shown by the arrow g, and the right clutch operation solenoid 28 is energized, so that the combine 1 has the stock 15 in contact with the sensor bar 12. It is rotated to the right until it disappears (see Figure 4 B, F, N). Next, the sensor bar 1 of the third sensor 13
4 contacts the stock 15 and the switch 23 is turned on by the rotation of the cam 14', the relay 23' is operated, the contact 23'a is turned on, and the contact 23'b is turned on.
It turns off. At this time, the stock does not come into contact with the sensor bar 12 of the second sensor 11, and the relay contact 21'
a is in the ON state, and right end divider 2a
Since the operation is set so that the stock rows are not close to each other, the switch 18 will not be turned on by the sensor bar 10 of the first sensor 8, and the relay contact 1 will not turn on.
8'a is in the ON state, and relay contact 18'b
and 21'b are in the OFF state. Therefore, the current flows as indicated by the arrow f, the left clutch operating solenoid 27 is energized, and the combine harvester 1 is rotated to the left. (See Figure 4 C and L). In addition, the sensor bars 12 and 14 of the second and third sensors 11 and 13
If the stock 15 does not come into contact with any of them, the relay contact 23'a is in the OFF state and the relay contact 23'a is in the OFF state.
1'b is in the OFF state and normally relay contact 1
8'b is in the OFF state, so both the left and right clutch operating solenoids 27 and 28 are not energized.
Therefore, the combine harvester 1 moves straight (see Figure 4 D and E).

Next, when the combine harvester 1 is working by horizontal mowing, the stocks are usually planted by a rice transplanter,
For this reason, the trees are planted in rows, and the distance between the rows ₁₂ is narrower than the distance between _the rows 11. Contact 15. Therefore, relay contacts 23'a and 21'b are in an ON state, and relay contacts 21'a and 23'b are in an OFF state. In this state, when the stock 15 comes into contact with the tip of the sensor bar 10 of the first sensor 8 and the bar 10 is rotated to the rotation range b, both limit switches 17 and 18 are turned off. Therefore, relay contacts 17'a and 18'b are turned OFF, both solenoids 27 and 28 are not activated, and combine 1
Go straight ahead (see Figure 4). Now combine 1
If it moves to the right, stock 1 will be placed on the sensor bar 10.
5 does not come into contact with each other, the spring 16 causes the bar 10 to rotate within the rotation range a, and the switch 17 is turned on. This activates relay 17' and contacts 1
7'a is turned on, and current flows as shown by arrow e, energizing the left clutch operating solenoid 27, thereby correcting the direction of the combine 1 to the left (see Figure 4a). Next, sensor bar 1
0 is rotated by the stock to the rotation range c, the switch 18 is turned on and the relay 18' is activated. As a result, the relay contact 18'b is turned ON, and the current flows as shown by the arrow h, energizing the right clutch operation solenoid 28, and the direction of the combine 1 is corrected to the right (see Fig. 4). reference).

Also, when row mowing, normally work with plenty of time on the right side, that is, on the already cut area side, but if there is a risk that the combine 1 will come off to the left due to the inclination of the row of plants, etc., resulting in uncut areas, When the sensor bar 10 of the first sensor 8 is rotated to the rotation range c by the stock, the switch 18 activates the relay 18'. As a result, the relay contact 18'b is turned ON, and by energizing the right clutch operating solenoid 28, the combine harvester 1 is directed to the right with priority over the second and third sensors 11 and 13 even during row cutting. It can be modified (see Figure 4, F, G, and H).

It goes without saying that the relay 17' activated by the switch 17 of the first sensor 8 has a built-in timer that forms a dead zone. Further, in this embodiment, the second and third sensors 11 and 13 are provided in separate divider frames 7b and 7c, respectively, but they are provided in a single divider frame, and the sensor bars 12 and 14 are arranged in opposite directions. Of course, it may be made to protrude to the side.

As explained above, according to the present invention, during row cutting and mid-splitting work, the second and third
Since the direction is automatically controlled by the sensors 11 and 13, and also by the first sensor 8 on the already cut area side during horizontal mowing and loose sowing operations, it is not only possible to perform appropriate direction control under any conditions, but also to Since the switching can also be performed automatically, operations, especially when turning the combine harvester, which requires multiple operations at once, are facilitated, and erroneous operations can be reduced. Also, even during row cutting, which is normally controlled by the second and third sensors 11 and 13, the direction command from the first sensor 8 to the already cut area side takes priority, so depending on the inclination of the row of plants, etc. However, there is no risk of leaving uncut areas. Furthermore, in the conventional device in which the sensor 8 is installed only on the side of the already cut area, the switch 17 is turned on at the beginning and end of mowing, and the combine harvester 1 is turned on.
In order to prevent grain culm from turning toward the uncut area, a grain culm detection sensor was required in the path of the grain culm conveying device 5, but in the present invention, the sensor bar does not come into contact with the sensor bar even during horizontal mowing work. When there are no more plants left, the second and third sensors 11 and 13 automatically control the grain culm detection sensor, so there is no need to provide a grain culm detection sensor.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing the front part of the combine harvester according to the present invention, Fig. 2 is a plan view showing the direction sensor portion thereof, Fig. 3 is an electric circuit diagram according to the present invention, and Fig. 4 shows the operation of the present invention. This is a chart showing. 1... Combine, 2... Divider, 7a
... Already cut area side end divider frame, 7b,
7c...Divider frame on the uncut side, 8
...First sensor, 11...Second sensor, 13...
...Third sensor, 17...Switch for turning command to the uncut area side, 18...Switch for turning command to the already cut area side, 21...Switch for the second sensor,
23...Third sensor switch.

Claims (1)

[Scope of utility model registration request] In a combine harvester having a large number of dividers, a first sensor having two switches for turning commands on the cut side and the uncut side is provided at the divider part at the side end of the cut area, and the divider on the uncut side The second and third sections each have one switch for commanding turning to the mowed area side or uncut area side.
A sensor is provided, and based on the signals from these sensors, if the switches of the second and third sensors are both in the turning command state, based on the first sensor, the command for turning for the mown area side and the turning for the uncut area side is given. If both switches do not issue a turning command, the direction is controlled in the direction corresponding to the turning command from the command switch, and the direction is controlled in the straight direction when the turning command switch towards the already mowed section side of the first sensor is turned. If a command is issued, priority will be given to control according to the command, and in other cases, the second
A direction sensor device configured to perform direction control in a direction corresponding to a turning command from a switch for turning to the mowed area side or unmown area side based on the sensor and the third sensor.