JPH0137364Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a direction control device for a reaper such as a combine, particularly a small reaper that performs two-row cutting.

In general, there are two types of mowing work: row mowing, in which the work is carried out along the rows, and so-called horizontal mowing, in which the work is carried out in a direction perpendicular to the rows. The installed left sensor, that is, the row cutting sensor, allows
It follows the grain culm row on the left side of the cutting width, and during horizontal cutting work, the grain culm row is uneven, and the left sensor cannot control the direction, and there is a gap between the cut area and the uncut area. It is necessary to control the direction using the right side sensor, that is, the sensor for horizontal mowing, which follows the mowing condition.For this purpose, direction sensors are provided on both the left and right sides, and a switch is operated to manually switch between the sensors on both the left and right sides depending on the cutting conditions. I was trying to switch it. For this reason, the operation when turning the reaper, which requires many operations, becomes even more complicated, making the operation extremely troublesome.

On the other hand, a direction control device has also been proposed that automatically switches the sensors for row mowing and horizontal mowing according to the mowing operation by detecting the condition of grain culm rows peculiar to row mowing or horizontal mowing. However, with this device, if there are no plants over a relatively wide area due to missing plants, etc., the horizontal cutting sensor issues a direction command to the uncut side (left and right) during horizontal cutting, and the machine moves to the uncut side. This caused some uncut parts to be left behind on the already cut side, making automatic direction control impossible in the next stroke.

Also, JP-A-52-127832 and Utility Model Application No. 53-
As shown in Publication No. 123032, if the grain culm does not touch both the left sensor and the right sensor,
Direction control devices that maintain automatic direction control in a straight-ahead state are known.

With this directional control device, if the reaper moves without contact due to stock shortages, etc., depending on the row of plants and the direction of movement of the reaper, when it moves to a situation where it comes into contact with the grain culm, it may There is a possibility of it coming off on both the mowing side and the already cut side, especially if it comes off on the uncut side.
It cannot be harvested in the next step and remains as an uncut culm.

Therefore, the present invention is configured to issue a turning command to the already cut side not only during row mowing but also during horizontal mowing when both the row mowing and horizontal mowing sensors do not come into contact with the grain culm. It is an object of the present invention to provide a direction control device for a reaper that eliminates the above-mentioned drawbacks.

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

As shown in Figs. 1 and 2, the reaper for two-row mowing has a left-hand divider 1, a center divider 2, a right-hand divider 3, a grain culm conveying device 6, etc. at the front of the machine. The driver's seat 7 is arranged on the right side thereof. As shown in an enlarged view in FIG. 2, the divider frame 1a supporting the left divider 1, that is, the divider on the uncut area side, is provided with a left sensor, that is, a row cutting sensor 10. It has a sensor bar 11 that protrudes to the right. Further, the divider frame 3a supporting the right divider 3, that is, the divider on the cut area side, is provided with a right side sensor, that is, a horizontal cutting sensor 12, and the sensor 12 has a sensor bar 13 that protrudes to the left side. There is. Left side sensor 10
, the sensor bar 11 is biased counterclockwise by a spring (not shown), and when the sensor bar 11 is in the rotation range A, only switch S _A in the sensor 10 (described later) is turned on, and the rotation is stopped. If it is in range C, sensor 1, which will also be described later,
If only switch S _B in 0 is turned on, and in the rotation range RO between them, both switches S _A ,
The configuration is such that both S and _B are in the off state. In addition, the right sensor 12 is connected to the sensor bar 13.
is biased clockwise by a spring (not shown), and when the sensor bar 13 is in the rotation range A', only switch S _C in the sensor 12, which will be described later, is turned on, and when the sensor bar 13 is in the rotation range C'. In this case, only the switch S _D in the sensor 12, which will also be described later, is in the on state, and in the rotation range RO' between that time, both the switches S _C and S _D are in the off state.

Next, the direction control circuit of this embodiment will be explained based on FIG. The circuit is the main switch
S _M and the grain culm detection sensor S _K arranged in the grain culm conveying device 6 are connected in series, and a circuit including a relay R _B operated by a switch S _B built in the left sensor 10 and the right sensor Relay operated by switch S _C built in 12
A circuit with R _C is connected in parallel. In addition, an intermediate changeover switch S _{N and a timer T 1 are connected in series to the relay contact S RB1 , which is} turned on when the relay R _B is energized, and the relay contact S _RC1 , which is turned off when the relay RC is energized. , the intermediate switch S _N is switched to the row cutting and side cutting contact x and the intermediate cutting contact y, and the timer T ₁ is switched to the fourth contact point y.
As shown in the figure, the output is output at the same time as it is activated, and the output continues to be turned off for a certain period of time _t1 so that it continues even after the input is turned off. Furthermore, a relay R _Z is connected in series with the timer T ₁ , and when the relay R _Z is energized, the relay contact S _RZ
Switch from the state shown in the figure to the reverse. In other words, if relay R _Z is not energized, contacts a,
When c and e are on, contacts b, d, and f are off, and relay R _Z is energized, contacts a,
The contacts c and e are switched off, and the contacts b, d, and f are switched on. Further, a circuit having a switch S _A of the left sensor 10 is connected in parallel, and is branched from the switch S _A to a delay timer T via a relay R _A and a relay contact S _RC3 which is turned on when relay R _C is energized. ₃ are connected. The timer _T3 operates with a delay of a predetermined time _t3 , and after confirming that the stock shortage continues for the predetermined time, the timer contact closes.
Close S _T3 and energize alarm device A such as a buzzer.
In addition, a relay contact S _{RA is branched from contact a of relay contact S RZ} and _is turned on when relay R _A is energized, and a relay contact is activated when relay R _B is energized.
Relay contact S _RS2 is connected to S _RB2 and is branched from contact b and activated by energization of relay R _C.
and the right sensor switch S _D is connected. In addition, the relay contacts S _RA and S _RC2 are connected to a delay timer T ₂ , and the timer T ₂ turns on the timer contact S _T 2 after a predetermined time delay t ₂ after being activated, as shown in FIG. A dead zone is formed between the grain culms so that the sensor bars 11 and 13 do not operate even if they reach rotational positions A and A'. In addition, relay contact S _RB2 and switch S _D are connected to contacts c and d of relay connection S _RZ , and timer contact S _T2 is connected to contacts e and f, and contacts c and f are connected to the left side of the reaper. Solenoid S _lL that operates the clutch of the moving part
In addition, contacts d and e are respectively connected to a solenoid S _1L that operates the clutch of the right drive section.

Since the present invention has the above-described configuration, when mowing work is to be performed using automatic direction control, the main switch _SM is turned on and the intermediate changeover switch S _N is held at the contact point x. When row mowing work is performed in this state, the sensor bar 13 of the right sensor 12 does not come into contact with the grain culm, and therefore the switch S _C is in the on state, so the relay R _C is energized and the relay contact S _RC1 is turned on. In the off state, relay R _Z is not energized. As a result, relay contact S _RZ becomes contact a
is in the on state as shown, and the switch is turned on.
Relay contact S _RA activated by S _A and relay contact S _RB2 activated by switch S _B are activated and directionally controlled by sensor 10 for the left side, ie for row mowing. Therefore, when the sensor bar 11 is in the rotational position A, the switch S _A is turned on, and the relay R _A , relay contact S _RA , delay timer T ₂ , and timer contact S _T2 are turned on.
The right solenoid S _lR is energized via contact e and the aircraft is corrected to the right. Furthermore, when the sensor bar 11 is in the rotational position C, the switch S _B is turned on, and the left solenoid S _lL is energized via the relay R _B , the relay contact S _RB2 , and the contact c, and the aircraft is corrected to the left. Ru. Furthermore, when the sensor bar 11 is in the rotational position B, both switches S _A and S _B are in the OFF state, and the aircraft continues to move straight. Furthermore, as shown in Figure 8, the number of stocks 2 over a wide range due to stock shortages
If 0 is not present, the sensor bar 11 is in the state of rotational position A, and the predetermined time t ₂ by the delay timer T ₂
Afterwards, the aircraft is corrected to the right as described above.
When this state continues for a predetermined period of time _t2 , the delay timer _T3 is outputted via the relay contact _SRC3 which is turned on by the switch S _A and the switch S _C , and the timer contact S _T3 is closed to activate the alarm device A. and notifies the operator that the abnormality detection state has continued for a long time. This allows the operator to make manual corrections or the like to prevent a large deviation to the right.

Furthermore, when one stroke of row mowing work is completed and the transition to horizontal mowing work is started, the sensor bar 11 of the left sensor 10 is in the rotation position C because the grain culm spacing is narrow in horizontal mowing work, and switch S _B turns on. Then, relay _RZ is energized via switch S _N , relay contacts S _RB1 , S _RC1 , and timer T ₁ , and as a result, relay contact S _RZ turns off contact a and contact b.
is switched on, and relay contact S _RC2 and switch S _D operated by switch S _C are activated, so that the right side mowing sensor 12
The direction is controlled by That is, the sensor bar 13
When is at rotation position C, switch S _D turns on,
The right solenoid S _lR is energized via contact d,
The aircraft is corrected to the right. Also, when the sensor bar 13 is in the rotation position RO', both switches S _C and S _D
Both are off, and the aircraft continues to fly straight. Furthermore, when the sensor bar 13 is at the rotational position A',
Switch S _C is turned on and relay contact S _RC1 is turned off via relay R _C , but since timer T ₁ holds the output state t ₁ for a predetermined time, relay R _Z is still in the energized state and the relay Contact point S _RZ is held in the horizontal cutting state. Therefore, the delay timer _T2 is energized via the relay contact _SRC2 . Then, after a delay time t ₂ by the delay timer T ₂ , the timer contact ST ₂ is turned on, the left solenoid Sl _L is turned on via the contact f, and the aircraft is corrected to the left. Furthermore, when this state continues and the delay time elapses, the timer contact ST ₂ is turned off and the aircraft moves straight, and then when the predetermined time t ₁ of the timer T ₁ elapses,
When the timer _T1 expires, the relay contact S _RZ is switched to the row cutting state, and the switch S _B of the right sensor 10 is turned on, so that the aircraft is corrected to the left as described above. Furthermore, as shown in FIG.
both stand up and take the rotational positions A and A', but they move straight for a predetermined time _t2 set by the delay timer _T2 , and after the predetermined time _t1 set by the timer _T1 has elapsed, the left sensor 10 is activated, and the sensor 11 switch
When S _A is turned on, delay timer _T2 is energized via relay R _A and relay contact S _RA , and after a delay of a predetermined time t ₂ , the right solenoid S _lR is energized via timer contact S _T2 and contact e. The aircraft is veered to the right. Note that if t ₁ > t ₂ due to the time settings of time limit timer T ₁ and delay timer T ₂ , t ₂
It moves straight for 2 seconds, then is corrected to the right for t ₁ - t ₂ seconds, and then corrected to the left, but even in that case, the predetermined time t ₁ of the timer T ₁ is not very long, and the reaper is Corrected to the right. When this state continues for a predetermined time _t2 , the delay timer _T2 outputs an output, closes the timer contact S _T3 , and activates the alarm device A, notifying the operator that the abnormality detection state has continued for a long time.

Note that if there is no grain culm to be harvested, the reaper will detect the grain culm detection sensor after a predetermined time delay caused by the grain culm conveying device 6.
S _K is turned off and automatic direction control is canceled.

As explained above, according to the present invention, even if there are no plants over a wide area due to missing plants, the machine runs away to the already cut side, and the machine does not rush into the uncut side, so there are no uncut plants, It is possible to prevent automatic control by the sensors 10 and 12 from being disabled in the next stroke due to irregular entry into the uncut side. Furthermore, the uncut side and the cut side also consist of one row mowing sensor 10, 12 for side mowing, two switches each are sufficient, and a simple device including a control device is sufficient. Even if two rows of plants enter the row cutting sensor 10 during row mowing, a turning command is immediately issued to the uncut side, returning to the normal state where only one row is present, and reliable direction control is performed. Furthermore,
When the row mowing sensor 10 is in the state of commanding the direction to the already mowed side, the reaping machine 7 is directed to the already mowed side regardless of the command state of the side mowing sensor 12. If the side rows have missing stubble or over-stubble from the previous process, the horizontal cutting sensor 12
Even if the machine issues a command to turn to the uncut side, it is controlled based on the row cutting sensor 10 and reliably prevents the machine from turning to the uncut side due to the above-mentioned missing plants, etc., resulting in uncut areas. be able to. Further, if an abnormal state in which both the row mowing sensor 10 and the horizontal mowing sensor 12 do not detect grain culms continues for a predetermined period of time _t3 , the alarm device A is configured to operate.
It is possible to quickly notify the operator that the machine is moving off the line towards the already cut side, and by appropriate manual operation by the operator, it can be prevented from going too far towards the already cut side and making automatic control impossible in the next stroke. can. Further, in this case, an alarm can be issued in the same way to notify the operator of abnormal conditions such as weeds being wrapped around the sensor or malfunction.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing the front part of a reaper to which the present invention is applied, Fig. 2 is an enlarged plan view showing the direction sensor portion thereof, Fig. 3 is an electric circuit diagram thereof,
Figure 4 shows the operation of the timer, Figure 5 shows the operation of the delay timer, Figure 6 shows the operation of the delay timer that activates the alarm, and Figure 7 shows the direction sensor section. FIG. 8 is a schematic plan view showing the operation during row mowing work, and FIG. 9 is a schematic plan view showing the operation during horizontal mowing work. 1... Unmown section side divider, 3... Already cut section side divider, 10... Row mowing sensor,
12...Sensor for horizontal mowing, S _A ...Already-cut side direction command for the row mowing sensor, S _B ...Uncut side direction command for the row mowing sensor, S _C ...Unmoved side direction command for the row mowing sensor Mowing side turning command, S _D ... Already mowing side turning command of horizontal cutting sensor, T ₁ ... Time limit timer, t ₁ ...
...Predetermined time, _T3 ...Delay timer, S _T3 ...Timer contact, A...Alarm device.

Claims (1)

[Claim for Utility Model Registration] A row cutting sensor is provided in the uncut side divider section to detect the position of the introduced grain culm in an area divided into 3 parts, and a row cutting sensor is provided in the cut side divider section to detect the introduced grain culm position in an area divided into 3 parts. Detecting the position of the culm in an area divided into three parts 1
In a reaper equipped with horizontal mowing sensors, when the row mowing sensor is in an uncut side turning command state, the horizontal mowing sensor is maintained in an operating state for a predetermined time, and in other cases, the above Automatically switches the row mowing sensor to the operating state, and when the row mowing sensor is in the already cut side turning command state, regardless of what command state the horizontal mowing sensor is in. The present invention relates to a direction control device for a reaper configured to direct the reaper exclusively toward the already-mown side.