JPS6337767Y2 - - 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.

In recent years, automatic direction control devices have installed direction sensors on the dividers on the unmown side (left side) and the cut side (right side), and usually the left sensor detects the row spacing on the unmown side and controls the direction.
Furthermore, a device has been proposed in which, when a thrust occurs to the left side, a sensor on the right side prevents further thrust. However, as shown in FIG. 9, when galling 1a occurs in the grain culm 1, this device generally causes bending in the same part of each row.
Even if a collision occurred to the left, the right sensor 2 did not work and the collision occurred to the left. Also, the 11th
As shown in the figure, when there was a long missing plant in the detection line of the left sensor 11, the line sometimes moved off to the right side and remained as it was. Furthermore, as shown in Fig. 13, even if the middle divider splits the plants and runs due to narrow planting row spacing or uneven planting, the left sensor 11 continues to run automatically. Stocks split by dividers were cut too high, resulting in problems such as unhandled crops and poor cutting marks.

Therefore, in the present invention, a direction sensor is installed in the divider part on the uncut side to detect the area where the grain culm introduction path is divided into three parts, and a direction sensor is installed in the divider part on the uncut side end to detect the area where the grain culm introduction route is divided into 3 parts, and a direction sensor is installed in the divider part at the end of the cut side to the divider part one row inside. A priority direction sensor having a sensor bar is installed, and the priority direction sensor detects the grain culm on the cut side grain culm introduction route of the divider section and issues an uncut side direction command, and Detecting a three-part area on the cutting side grain culm introduction route,
If the grain culm does not come into contact with the sensor bar of the priority direction sensor, the direction is automatically controlled based on the direction sensor, and if the grain culm comes into contact with either the left or right side of the sensor bar, the priority direction It is characterized by automatic direction control based on sensors,
It is an object of the present invention to provide an automatic direction control device for a combine harvester that eliminates the above-mentioned problems.

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

The combine 5 has a fuselage 6 as shown in FIG.
It has a reaping section 7 in front of the reaping section 7, and a large number of dividers 9, a grain culm conveying device 10, etc. are arranged in the reaping section 7. A left direction sensor 11 is arranged on the left side, that is, the divider 9a at the uncut side end, and a right side direction sensor 12, which constitutes a priority direction sensor, is arranged on the right side, that is, the divider 9c one row inside from the cut side end divider 9b. Furthermore, a main sensor 13 is arranged in the grain culm conveying device 10 to detect the flow of the reaped grain culm. The left direction sensor 11 has a case 15, as shown in FIGS. 2 and 3, and a sensor shaft 16 is rotatably supported by the case 15. Further, a sensor bar 17 that protrudes inwardly is fixed to one end of the sensor shaft 16, and a stopper 20 biased by a spring 19 contacts the notch 16a of the sensor shaft 16. As a result, the sensor bar 17 is biased to the upright position a as shown by the solid line in FIG. In addition, the shaft 16 has two
cams 21 and 22 are fixed, and cam 2
1 and 22 are limit switches 23 and 24, respectively.
can be activated. That is, the sensor bar 17 is at position a.
When the bar 17 is at position c, the left switch 24 is turned on, and when the bar 17 is at position b between them, both switches 23 and 24 are turned off. On the other hand, the right direction sensor 12 has a case 25, as shown in FIGS. 4 and 5, and a sensor shaft 26 is rotatably supported by the case 25. Further, at the end of the sensor shaft 26 protruding from the case 25, a sensor bar 27 is provided, one end of which is bent into a U-shape.
The ratio of the left and right protrusion amount can be adjusted freely by bolt 2.
9 or the like, and the bar 27 has a main detection section 27a protruding leftward and a U-shaped auxiliary detection section 27b protruding rightward. Furthermore, sensor axis 2
6, when the stopper 31, which is biased by the spring 30, comes into contact with the notch 26a,
The sensor bar 27 is biased to position a' as shown by the solid line in FIG. Further, two cams 32 and 33 are fixed to the shaft 26, and the cams 32 and 33 are fixed to the shaft 26.
33 can actuate limit switches 35 and 36, respectively. That is, when the sensor bar 27 is at position a', only the left switch 35 is turned on, and when the bar 27 is at position c', only the right switch 36 is turned on.
Further, when the bar 27 is at position b' between them, both switches 35 and 36 are turned off, and the auxiliary detection section 2
When the grain culm is in contact with 7b and is at position e, both switches 35 and 36 are turned on.

Next, the electric circuit of this embodiment will be explained with reference to FIG. A main switch 39, a lever switch 40, and a switch 13' operated by the main sensor 13 are connected in series from the power source 37, and each switch 2 of the left direction sensor 11 is connected in series.
3, 24 and the switches 35, 36 of the right direction sensor 12 are connected in parallel, and the switches 23, 24, 35, 36 are connected to relays 41, 42, 43, 44, respectively.
Relay 41 turns on normally open contact 41a when energized, and relay 42 turns on normally open contact 42 when energized.
The relay 43 turns on the normally open contacts 43a, 43b by the energization, and the relay 44 turns the normally open contacts 44a, 44b on by the energization.
Furthermore, a relay 46 is connected via contacts 43a and 44a, and when energized, the relay 46 turns on the normally open contact 46a and turns off the normally closed contact 46x. In addition, a control unit 47 consisting of left and right control sections 47l and 47r has respective contacts 43b and 42a.
or connected via 41a, unit 4
7 constitutes a dead zone for a predetermined time so as not to operate between the grain culms, and is connected to a rotation sensor 50 that detects the rotation of the combine harvester 49.
The width of the dead zone can be appropriately adjusted according to the traveling speed of the vehicle. Furthermore, the left control part 47l can actuate the relay 51, which by its operation closes the normally open contact 5.
Turn on 1a. Further, the right control section 47r can operate the relay 52, and the relay 52 turns on the normally open contact 52a by the operation. Furthermore, the left solenoid 5 of the switching valve operates to disengage the left side clutch of the combine 5 via the contact 51a or 46a.
31 is connected, and contact 52a or 44b
A right solenoid 53r of a switching valve for disengaging the right side clutch is connected via 46x and 46x.

Next, the operation of this embodiment will be explained with reference to FIG.

Right direction sensor 11 and left direction sensor 1
2 are not in contact with the grain culm 1 and are in the No. 1 state, relays 41 and 43 are energized and contacts 43b and 4
The right control section 47r is activated via 1a, and therefore the relay 52 is activated. Then, the contacts 52a, 46
The right solenoid 53r is energized via x, and the combine 5 is corrected to the right. In addition, the main detection part 27a of the bar 27 of the left side direction sensor 12 detects the grain culm 1.
When the contact point 43 contacts properly and reaches the state of No. 2,
b is turned off, and therefore both control sections 47l and 47r are not operated and the combine harvester 5 moves straight. On this occasion,
As shown in Fig. 8, even if galling 1a occurred in the rightmost row in the previous step, the second row from the right end is detected, so erroneous operations as shown in Fig. 9 are avoided. do not have. Furthermore, when the grain culm comes into deep contact with the main detection part 27a of the sensor bar 27 and enters the No. 3 state, the relay 44 is energized and the right solenoid 53r is energized via the contacts 44b and 46x, and the combine harvester 1 is immediately activated. Correct to the right. In addition, the grain culm comes into contact with the auxiliary detection part 27b of the sensor bar 27, and No. 4
In this state, both the relays 43 and 44 are energized, and the relay 46 is energized via the contacts 43a and 44a. Then, the left solenoid 53l is energized via the contact 46a, and the combine 5 is immediately corrected to the left. That is, as shown in FIG.
Even if there is a missing stock in the row on the left side of the reaping width and the combine harvester 5 corrects it to the right as described in No. 1, it will immediately move to the left due to the contact of the rightmost row with the auxiliary detection part 27b. This prevents the strip from slipping off to the left as shown in FIG. At this time, the contact 44b is turned on by the relay 44 being energized, but the contact 46x is turned off by the relay 46 being energized, so the right solenoid 53r is not energized. In addition, the grain culm is in moderate contact with the sensor bar 17 of the left direction sensor 11, and the grain culm is not in contact with the sensor bar 27 of the right direction sensor 12, or is in moderate contact, and the state is No. 5 and 6. , both contacts 42a and 41a are in the off state,
In addition, since the relay 44 is not energized, the left and right solenoids 53l and 53r are not energized and the combine 5
goes straight. Also, when the grain culm comes into deep contact with the bar 27 of the right direction sensor 12 and reaches the state No. 7,
The contact 44b is turned on via the relay 44, and the combine 5 is immediately corrected to the right. In addition, the grain culm comes into contact with the auxiliary detection part 27b of the sensor bar 27,
When the state No. 8 is reached, the relay 46 is energized, turns on the contact 46a, and immediately corrects the combine harvester 5 to the left. Therefore, as shown in FIG. 12, the direction of the middle dividers 9c, 9d, etc. is corrected so that they do not run so as to cut through the rows, and the problem shown in FIG. 13 can be prevented. In addition, when the sensor bar 17 of the left direction sensor 11 is largely in contact with the grain culm, and the grain culm is not in contact with the bar 27 of the right direction sensor 12, and the state is No. 9, the relay 4
2 and 43, the contacts 42a and 43b are turned on, respectively, and the left control section 47l is activated. Then, the contact 51a is turned on via the relay 51, energizing the left solenoid 53l, and correcting the combine harvester 5 to the left. Further, in the state No. 10, the combine harvester 5 moves straight. Further, when the grain culm comes into deep contact with the main detection part 27a of the sensor bar 27 and reaches the state No. 11, the contact 44b is turned on via the relay 44, and the combine harvester 5 is immediately corrected to the right. Further, when the grain culm comes into contact with the auxiliary detection part 27b of the sensor bar 27 and the state becomes No. 12, the contact 46a is turned on via the relay 46, and the combine harvester 5 is immediately corrected to the left.

As explained above, according to the present invention, since the priority direction sensor 12 capable of detecting both sides is provided in the divider portion 9c one row inside from the already-cut side edge,
It is possible to eliminate detection failures of the direction sensor 12 due to variations between the strips.
a, or even if there is a missing plant in the detection row of the direction sensor 11 located on the uncut side, the direction can be controlled appropriately, and even if the planting row spacing is narrow, the medium divider 9c, It is possible to prevent stock splitting due to 9d.... Furthermore, if the direction sensor 2 is installed on the divider 9b at the end of the mowed side, it may be deformed when it hits a ridge or the like, but since the priority direction sensor 12 is installed inside, problems such as deformation can be prevented. Furthermore, if the sensor bar 27 of the preferred direction sensor 12 is configured to be able to adjust the ratio of its left and right protrusion, it is possible to easily accommodate all planting conditions.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a combine harvester to which the present invention is applied, Fig. 2 is a plan view showing a left direction sensor, Fig. 3 is a sectional view thereof, and Fig. 4 is a plan view showing a right direction sensor. Figure 5 is its cross-sectional view, and Figure 6
The figure is an electric circuit diagram according to an embodiment of the present invention, FIG. 7 is a diagram showing the operation in each state, and FIGS. 8, 10, and 12 are schematic plan views showing different operating states according to the present invention. Figures 9, 11 and 1
FIG. 3 is a schematic plan view showing different operating states of the already proposed automatic direction control device. 5...combineer, 9a...uncut side divider, 9b...already cut side divider, 9c...1
Divider inside the strip, 11... (left side) direction sensor, 12... (right side) priority direction sensor, 2
7...Sensor bar.

Claims (1)

[Scope of Claim for Utility Model Registration] In a combine harvester having a plurality of divider parts forming three or more grain culm introduction routes at the front of the machine, three or more grain culm introduction routes are provided in the uncut side divider part.
A direction sensor for detecting the divided area is installed, and a priority direction sensor having a sensor bar protruding left and right is installed in the divider part one row inside from the divider part at the end of the cut side, and the priority direction sensor detects the divided area. Detecting grain culms on the cut side grain culm introduction route of the divider part and issuing an uncut side direction command, detecting an area divided into three on the uncut side grain culm introduction route of the divider part, and using the priority direction sensor. When the grain culm does not come into contact with the sensor bar, the direction is automatically controlled based on the direction sensor, and when the grain culm comes into contact with either the left or right of the sensor bar, the direction is automatically controlled based on the priority direction sensor. An automatic direction control device for combine harvesters that controls direction.