JPH039602Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a direction control device suitable for use in a reaping machine such as a combine harvester, particularly a small reaping machine that performs two-row cutting.

(b) Prior art In general, in reaping work, there are two types of reaping operations: row cutting, which involves cutting along the rows, so-called horizontal cutting, which involves cutting in a direction perpendicular to the rows, and cutting from the middle of the field into the rows. There is so-called mid-splitting, in which the grain is cut in the middle, but during row cutting and mid-splitting work, the left side sensor, i.e. the row cutting sensor, installed behind the divider on the uncut side divides the grain along the rows of grain culms on the left side of the cutting width. Also, during horizontal mowing work, the grain culm rows are uneven, and the left sensor cannot control the direction, so the right sensor, that is, the horizontal mowing sensor, follows between the mown area and the uncut area. It is necessary to control the direction, and for this purpose, direction sensors are provided on both the left and right sides, and depending on the cutting conditions, the sensors on both the left and right sides are manually switched by operating a switch.

(c) Problems to be solved by the present invention However, in addition to the automatic direction control operation switch, a changeover switch must be provided to select between row cutting, horizontal cutting, and mid-splitting, and it is also necessary to provide a changeover switch for selecting row mowing, horizontal cutting, and mid-splitting. Automatic direction control off, neutral together and on the other hand
There is also a switch that has horizontal cutting on the other side, but in general, reaping work is done by alternating row cutting and horizontal cutting, so-called circular cutting, so it is necessary to switch the switch every time you perform one stroke. This makes the operation when turning the reaper, which requires many operations, even more complicated, making the operation very 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 reaping operation by detecting the condition of grain culm rows peculiar to row mowing or horizontal mowing. However, this directional control device has the disadvantage that the row mowing and side mowing sensors frequently switch during splitting, making it impossible to run stably.

(d) Means for solving the problem The present invention aims to solve the above-mentioned problems by interposing an intermediate switching switch consisting of a row cutting/side cutting contact and an intermediate cutting contact in the direction control circuit.
In addition, the switch is linked to a mid-split detection sensor that detects whether grain culms are present on the already cut side of the reaper, and during mid-split work, the switch is switched to the mid-split contact based on the mid-split detection sensor. The present invention is characterized in that only the row mowing sensor is activated regardless of the grain culm detection status of the row mowing and horizontal mowing sensors.

(E) Effect Based on the above-mentioned means, when the mid-split sensor detects a grain culm, the mid-split changeover switch automatically switches to the mid-split contact regardless of the grain culm detection status of the row mowing sensor and horizontal mowing sensor. Instead, only the row mowing sensor is activated.

(F) Embodiment The present invention will be specifically described below 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. has a sensor bar 11 protruding to the right side. 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 1
3 is biased clockwise by a spring (not shown), and when the sensor bar 13 is in the rotation range A', the switch S _C in the sensor 12, which will be described later, is activated.
If only the switch S D in the sensor 12, which will also be described later, is turned on and within the rotation range C', only the switch S _D in the sensor 12, which will also be described later, is turned on, and the
, both switches S _C and S _D are turned off. Further, as shown in Fig. 1, an in-between detection sensor 20 having a sensor bar 19 protruding to the left side is installed in the narrow guide 17 portion on the right side of the machine, and the in-between detection sensor 20 is used during in-between work. , contact the grain culm and switch the intermediate division changeover switch S _N.

Next, the direction control circuit of this embodiment will be explained based on FIG. The circuit is the main switch
S _M are connected in series, and the circuit further has a relay R B actuated _by a switch S _B built in the left sensor 10. The circuit has a relay R _C actuated by a switch S _C built in the right sensor 12. The circuits are 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. , intermediate switch S _N
is switched to the row mowing and horizontal mowing contact x and the splitting contact y, and the timer _T1 outputs an output at the same time as it is activated, as shown in FIG. 4, and the output continues even after the input is cut off. It is designed so that it can be turned off continuously for a certain period of time T. Furthermore, the timer
A relay R _Z is connected in series with T ₁ , and the relay
When _RZ is energized, it switches relay contact S _RZ from the state shown in the figure to the opposite state. That is, relay R _Z
When is not energized, contacts a, c, and e are on, and contacts b, d, and f are off, and when relay R _Z is energized, contacts a, c, and e are off,
Contacts b, d, and f are switched on.
Then, branched from contact a, the left sensor 10
Relay contact S _RB2 , which is activated by energization of switch S _A and relay R _B , is connected, and contact B
Relay contact S _RC2 branched from and activated by energization of relay R _C and right sensor switch S _D
is connected. In addition, the switch S _A and the relay contact S _RC2 are connected to a delay timer T ₂ , and the timer T ₂ turns on the timer contact S _T2 after a predetermined time delay t after being activated, as shown in Fig. 5. 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 contact S _RZ , and timer contact S _T2 is connected to contacts e and f.
Furthermore, contacts c and f are connected to the solenoid S _lL that operates the clutch on the left drive section of the reaper, and contacts d and e are connected to the solenoid S _lR that operates the clutch on the right drive section of the reaper.
are connected to each.

Since this embodiment has the above-described configuration, when performing circular mowing work using automatic direction control,
Since the grain culm does not come into contact with the middle split sensor bar 19, the middle split detection sensor 20 does not operate, and the middle split changeover switch S _N is maintained at the contact point x.
When performing row mowing work 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
_RC is energized, relay contact S _RC 1 is in the off state, and relay R _Z is not energized. This results in
Relay contact S _RZ is in the state shown in the figure, with contact a in the on state, and relay contact S _RB2 operated by switch S _A and switch S _B is in the operating state, and the left side,
That is, the direction is controlled by the row cutting sensor 10. Therefore, when the sensor bar 11 is in the rotational position A, the switch S _A is turned on and the delay timer T ₂ ,
The right solenoid S _lR is energized via timer contact S _T2 and contact e, and the aircraft is corrected to the right.
Furthermore, when the sensor bar 11 is in the rotational position C,
Switch S _B turns on, relay R _B and relay contact S _RB2
The left solenoid S _lL is energized via contact c and the aircraft is corrected to the left.

Furthermore, when one stroke of row mowing work is completed, the work shifts to horizontal mowing work, but since the grain culm spacing is narrow in horizontal mowing work, the sensor bar 1 of the left sensor 10
1 is at rotational position C, and switch S _B is turned on.
Then, relay R ₂ is energized via switch S _N , relay contacts S _RB1 , S _RC1 and timer T ₁ ,
As a result, relay contact S _RZ is switched so that contact a turns off and contact b turns on, and relay contact S _RC2 and switch S _D , which are activated by switch S _C , are activated, and therefore the right side, ie side The direction is controlled by a mowing sensor 12. That is, when the sensor bar 13 is at the rotational position C', the switch S _D is turned on, the right solenoid S _lR is energized via the contact d, and the aircraft is corrected to the right. Furthermore, when the sensor bar 13 is in the rotational position A', the switch S _C is turned on and the relay contact S _RC1 is turned off via the relay R _C , but the timer _T1 maintains the T output state for a predetermined period of time. Therefore, the relay R _Z is still energized, the relay contact S _RZ is held in the horizontal cutting state, and the left solenoid S _lL is energized through the relay contact S _RC2 , delay timer T ₂ , timer contact S _T2 and contact f. and the aircraft is corrected to the left.

In addition, when performing the middle splitting work, the grain culm comes into contact with the middle splitting sensor bar 19, and the middle splitting detection sensor 2
0 automatically switches the intermediate changeover switch S _N from contact x to y. Then, regardless of the operating status of switches S _B and S _C , that is, regardless of the status of the grain culm row, the relay will be activated.
The power supply to _RZ is cut off, and the relay contact S _RZ is maintained in the illustrated state in which the contact a is in the on state. Therefore, the row mowing sensor 10 on the left side is automatically controlled along the row without being disturbed by the grain culm on the right side of the machine body.

(g) Effects of the invention As explained above, according to the invention, in the case of generally used round mowing work, the row mowing sensor 10 and the side mowing sensor 12 can be manually switched according to the cutting conditions. There is no need to switch by operating the switch, making it easy to operate when turning, and preventing the strip from coming off due to erroneous operation and leaving uncut parts. Automatically maintains only the row mowing sensor in operation, thereby preventing frequent switching of the operation of both sensors and allowing stable driving.
Furthermore, since the intermediate division detection sensor 20 automatically switches, it is possible to reliably prevent malfunctions caused by forgetting to switch when the intermediate division is not used often.

[Brief explanation of drawings]

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 according to the present invention, and Fig. 4 5 is a diagram showing the operation of the time limit timer, and FIG. 5 is a diagram showing the operation of the delay timer. 1... Unmown side divider part, 3... Already cut side divider part, 7... Driver's seat, 10... Sensor for row mowing, 12... Sensor for horizontal mowing, 17
... Narrow guide, 19 ... Intermediate sensor bar, 20 ... Intermediate detection sensor, S _A , S _B ...
Direction control switch for row mowing, S _C , S _D ... Direction control switch for horizontal mowing, S _N ... Intermediate cutting switch, x ... Row mowing and horizontal cutting contact, y ... Intermediate cutting contact.

Claims (1)

[Scope of Claim for Utility Model Registration] In a reaper that is equipped with a row cutting sensor on the uncut side divider section and a horizontal cutting sensor on the cut side divider section, depending on the grain culm detection status by these two sensors, Automatically switching the direction control circuit of the reaper to correspond to row mowing or horizontal mowing work, further interposing an intermediate switching switch having a row mowing and horizontal mowing contact and an intermediate contact in the direction control circuit, In addition, an in-between detection sensor is provided to detect whether or not grain culms are present on the already-cut side of the machine, and the in-between split detection sensor is linked to the in-between changeover switch so that the in-between changeover switch is activated during the in-middle cutting operation. A direction control device for a reaper configured such that only a row mowing sensor is operated by switching to a middle contact point, regardless of the grain culm detection situation.