JPS6334487Y2 - - 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. If you use the right side direction sensor, especially when the combine width is wider than the total width between grain culm rows, the left grain culm row may be cut or left unmown due to vibration of the machine. This made it difficult for the right direction sensor to follow the grain culm row during the next operation. Therefore, during row mowing work, the left direction sensor installed behind the divider on the uncut area side allows
It is preferable to follow the grain culm row on the left side of the cutting width. 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, sensors are provided on the mowed plot side and the uncut plot side, and the mowed plot side turning solenoid is excited by the cut plot side turning command from the cut plot side sensor, and the mowed plot side sensor The unmown area side sensor is activated by the unmown area side turning command, and the turning solenoid in the corresponding direction is energized by the turning command of the unmown area side sensor. A direction sensor device has been proposed that switches between left and right sensors according to operating conditions.

However, in this device, the machine body suddenly rotates in response to a signal from a sensor, causing an unpleasant sensation to the worker as if he were being shaken off, and there was also a risk of an accident occurring, such as the worker being thrown off.

Therefore, in the present invention, an already-mown area side sensor is provided in the divider part on the side of the already-mown area, and an un-mown area-side sensor is provided in the divider part on the un-mown area side, and the already-mown area side sensor is Immediately energize the mowed area side turning solenoid without delay time by the side turning command, and immediately put the unmown area side sensor into an operating state by the uncut area side turning command of the already cut area side sensor, Further, the unmown area side turning command from the unmown area side sensor is connected to the already mowed area side turning solenoid via a timer that emits a pulse signal that rises after a predetermined delay time from the generation of the command, and The uncut area side turning command from the cutting area side sensor is connected to the uncut area side turning solenoid via a timer that emits a pulse signal that rises immediately without delay time, and the timer is further connected to an intermittent pulse signal. By setting the solenoid to emit a continuous signal after emitting it a predetermined number of times, and then energizing the redirection solenoid intermittently, it is possible to perform a smooth direction correction similar to an inching operation. It is an object of the present invention to provide a direction sensor device for a combine harvester that can follow and control grain culm rows that are extremely curved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention and examples on which they are based will be described below with reference to the drawings.

As shown in FIG. 1, the combine 1 has a pre-processing section 4 including a large number of dividers 2, cutting blades 3, a grain culm conveying device 3, etc. at the front of the machine. Further, a driver's seat 5 is arranged on the right side thereof, and a grain culm detection sensor 6 that is activated by the grain culm is further arranged in the grain culm distribution path of the grain culm conveying device 3. Divider 2 on the right side, that is, at the end of the already cut area A side
A right side sensor 8 is provided on the divider frame 7a supporting the frame 7a, and the sensor 8 has a sensor bar 10 projecting to the left side.
Also, the divider 2 at the left end, that is, the end of the uncut area B side.
A left sensor 11 is provided on the divider frame 7b supporting the sensor 1.
1 has a sensor bar 12 protruding to the right side. As shown in FIG. 2, the right sensor 8 has a sensor bar 10 biased clockwise by a spring 13, and a cam 15 provided at its rotating portion that connects two limit switches 16, 1.
7 can be touched and activated. That is, the sensor bar 10
When is in the rotation range a, the limit switch 16 for left rotation command is turned on, and when it is in rotation range c, the limit switch 17 for right rotation command is turned on.
is in the ON state and in the rotation range b between that time, both limit switches 16 and 17 are turned on.
It becomes OFF state. In addition, the left sensor 11 has a sensor bar 12 urged counterclockwise by a spring 18, and two limit switches 21, 22 by a cam 20 provided on the rotating part.
can be touched and activated. That is, when the sensor bar 12 is in the rotation range c', the limit switch 21 for the clockwise rotation command is turned on, and when the sensor bar 12 is in the rotation range a', the limit switch 22 for the left rotation command is turned on.
When it is in the ON state and in the rotation range b' during that time, both limit switches 21 and 22 are
It becomes OFF state.

Next, based on FIG. 3, an electric circuit of an embodiment that is the basis of the present invention will be explained. In this circuit, a main switch 23, a lever switch 25, and a switch 6a operated by a grain culm detection sensor 6 are connected in series, and a relay 1 operated by limit switches 16 and 17 of the right sensor 8 is connected in series.
A circuit having 6a and 17a is connected in parallel. Further, a circuit having timers 21a and 22a operated by limit switches 21 and 22 of the left sensor 11 is connected in parallel via a relay contact 16b which is turned ON when the relay 16a is energized. The timers 21a and 22a are as shown in FIG.
As shown in b, intermittent pulse signals B and D are output in response to signals A and C of the limit switches 21 and 22. At this time, while the timer 22a emits a pulse at the same time as the left turn command switch 22 is activated, the timer 21a
is set to be emitted one pulse later than the operation of the right turn command switch 21 in order to form a dead zone between the grain culms. In addition, the output pulse signals B and D are connected to the relay 2 of the circuit connected in parallel.
1b and 22b, respectively. Further, a circuit is connected in parallel to a left turn solenoid 26 of a solenoid valve that disconnects and operates the clutch of the left crawler via a relay contact 22c that is turned on when the relay 22b is energized. In addition, relay contact 1 is turned ON when relay 17a is turned on.
7b or a relay contact 21c which is turned on by energization of the relay 21b, is connected to a right-turning solenoid 27 of a solenoid valve for disengaging the clutch of the right crawler. In addition, 29 in FIG. 1 shows a grain culm, and 30 in FIG. 3 is a battery.

Since the embodiment that is the basis of the present invention has the above configuration, the combine harvester ₁ is used for row cutting as shown in C in FIG. When the sensor bar 10 of the right sensor 8 comes into moderate contact with the grain culm and rotates to the rotation range b, both the switches 16 and 17 are turned OFF, and the relays 16a, 17 are turned OFF. 17a is not energized and contact 16b, contacts 22c and 21c, and contact 17b are also in the OFF state, so combine harvester 1 moves straight. Now, when the combine 1 shifts to the right, the sensor bar 10 is returned to the rotation range a by the spring 13, and the switch 16 is turned on to energize the relay 16a and turn the contact 16b on. At the same time, since the row spacing l ₁ of the grain culm 29 and each divider 2 are approximately aligned, the left sensor 1
The sensor bar 12 of No. 1 is rotated to the rotation range a' by the grain culm, and the switch 22 is turned on and the timer 22 is turned on.
A is energized, and as shown in FIG. 4B, an intermittent pulse signal D is transmitted to the relay 22b. As a result, the contact point 22c is intermittently turned ON to intermittently excite the solenoid 26, and by operating the solenoid valve, the combine 1 is smoothly moved to the left by an operation similar to the inching operation performed by a skilled driver. Correct the direction. At this time, as shown in FIG. 4b, since the pulse signal rises immediately upon turning on the switch 22, it can follow the grain culm without causing a delay in response. Also, if the combine harvester 1 shifts to the left, the sensor bar 1 of the right sensor 8
0 rotates to rotation range c and turns on switch 17
Then, the relay 17a is energized. Then, Figure 4c
As shown in FIG. 2, the same signal is transmitted to the contact point 17b, and the solenoid 27 is continuously energized, causing the combine harvester 1 to turn sharply to the right, thereby preventing the generation of uncut plants.

Furthermore, as shown in D in _FIG .
0 is in the rotation range b, the combine 1 will move straight as described above regardless of the rotation position of the sensor bar 12 of the left sensor 11, but the combine 1 will further shift slightly to the right and the right sensor 8 will move. Even if the sensor bar 10 rotates to the rotation range a, the sensor bar 12 of the left sensor 11 is in the rotation range b', and therefore the switches 21 and 22 are both in the OFF state, so the combine 1 moves straight. That is, in this state, the combine harvester 1 is normally controlled by the left sensor 11. Therefore, when the combine harvester 1 shifts further to the right, the sensor bar 12 is rotated to the rotation range a', and the switch 22 is turned on to turn on the timer. The relay 22b is intermittently energized via the relay 22a, thereby intermittently turning on the contact 22c as described above.
Turn on and smoothly correct combine 1 to the left. Furthermore, when the combine harvester 1 shifts to the left, the sensor bar 12 is rotated to the rotation range c',
Switch 21 is turned on to energize timer 21a. Then, the timer 21a sends an intermittent pulse signal A to the relay 21b, as shown in FIG. 4a.
The combine 1
Correct smoothly to the right. In this case as well, if there is a protruding grain culm such as unstubble on the right side, that is, on the already cut area A side, the sensor bar 10 of the right sensor 8 will rotate to the rotation range c, and the relay 17a will be activated in the same way as described above. It operates and turns contact 17b into the ON state.
Continuously energize the solenoid 27, combine harvester 1
The grain suddenly turns to the right in order to meet the protruding grain culm.

Furthermore, when the combine harvester 1 is used for horizontal mowing or loose sowing, the gap between the grain culms _is narrow and the grain culms are not aligned, so the sensor bar 12 of the left sensor 11 is moved within the rotation range a'. The sensor bar 10 of the right sensor 11 rotates, and therefore the sensor bar 10 of the right sensor 11 moves to the uncut section B.
A combine harvester 1 is controlled along the grain culm row at the end. That is, when the sensor bar 10 is in the rotation range b,
As before, the combine 1 moves straight. Further, when the combine harvester 1 is shifted to the right and the sensor bar 10 is rotated to the rotation range a, the switch 16 is turned on, energizing the relay 16a and turning on the contact 16b. At this time, sensor bar 1 of left sensor 11
2 is in the rotation range a' and the switch 22 is in the ON state, so the relay 22 is activated via the timer 22a.
energize b and turn contact 22c on. As a result, the solenoid 26 is intermittently excited, and the combine 1 is smoothly corrected to the left. Further, when the combine harvester 1 shifts to the left and rotates the sensor bar 10 to the rotation range c, the switch 17 is activated.
Turn ON to energize relay 17a. This results in
The solenoid 27 is energized by turning on the contact 17b, and the combine harvester 1 is rapidly corrected to the right so as not to leave any uncut leaves.

Next, an embodiment according to the present invention will be described based on FIGS. 5 and 6. In this embodiment, timer 2
Signal converters 21d and 22d are interposed between 1a and 22a and relays 21b and 22b, which count pulses and convert them to continuous signals when the number of pulses exceeds a set value.

Therefore, as shown in FIG. 6, when the timer 21a or 22a is energized by the switch 21 or 22, a predetermined number of pulse signals are sent to the relay 21.
b or 22b, and as a result, the direction of the combine 1 is smoothly corrected by several inching operations as described above. Normal bends in the grain culm row can be followed by direction control using several inching operations, but for large curvatures in the grain culm row that cannot be followed by this inching operation, the signal converter is used after the inching operation. Continuous signals are sent to relays 21b and 22b by 21d and 22d, and contact 21
Turn on c or 22c and turn on solenoid 26.
Alternatively, the combine harvester 1 can be turned rapidly and followed by continuously exciting the combine harvester 27.

As explained above, according to the present invention, the already mowed area side sensor 8 and the uncut area side sensor 11 are connected to each other.
Although it is capable of automatically switching depending on the operating state to cope with row mowing, horizontal mowing, etc., when the already mowed section side sensor 8 issues the already cut section side turning command 17, the combine harvester 1 is given priority. Since the correction is made immediately and directly without inching, even if there is a slight protruding grain culm, or even during horizontal cutting, the reaping action can be performed reliably without leaving any uncut residue. Furthermore, even if the operation is automatically switched from the mowed section side sensor 8 to the uncut section side sensor 11, the direction is smoothly controlled by the inching operation by the timers 21a and 22a, so that there is no risk of being swayed by the operator. It does not cause discomfort, and it is possible to prevent accidents such as the operator being thrown off. Furthermore, by simply using the timers 21a and 22a for performing the above-mentioned inching operation, with and without a delay time until the pulse rises, the timers 21a and 22a for performing the inching operation can be used to control the timer 21a and 22a when the unmown area side sensor 11 is commanded to turn to the already mowed area side. It is possible to form a dead zone between grain culms, and the responsiveness is not impaired at the time 22 when the uncut section turning command is issued.

Furthermore, since the timers 21a and 22a are set to emit a continuous signal after emitting a predetermined number of intermittent pulse signals, the direction can be smoothly corrected by the inching operation in response to the normal bending of the grain culm row. , it is possible to respond to large bends in grain culm rows that cannot be handled by the inching operation using continuous control, and in this case, since continuous control is performed after inching control, it is possible to avoid shaking by the operator. It is safe because it does not cause any discomfort, and it does not cause accidents such as throwing the worker off.

Furthermore, when the timers 21a and 22a are set based on the rotation sensor 33 interposed in the transmission path of the pre-processing section 4, and are related to the traveling speed, the pulse time T ₂ ,
Since T ₃ can be adjusted according to the traveling speed, it is possible to perform appropriate direction control according to the traveling speed, and the sensor bar 12 is returned by the spring 18 based on the distance between the plants, and the switch 2 is intermittently activated.
The delay time T 1 that constitutes a dead zone for ignoring the signal when ₁ is activated can be made to correspond to the traveling speed, and it is possible to prevent operation delays and the like. Furthermore, if the rotation of the rotation sensor 33 is 0 or below the specified rotation speed, the timers 21a and 22a will not output any output, so if the travel clutch is disconnected during work and the travel is stopped, or if the pre-processing section clutch is disconnected and the conveyance device is 3, when driving with grain culms caught in the main switch 23 and grain culm detection switch 6.
Even if a is in the ON state, the automatic direction control is stopped, so there is no need to turn the main switch 23 on and off each time, and it is possible to prevent the aircraft from swinging to the left or right when traveling is resumed.

[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 schematic plan view showing the direction sensor portion thereof, FIG. 3 is an electric circuit diagram according to an embodiment that is the basis of the present invention, and FIG. 5 is a diagram showing the operation of a timer and a relay, FIG. 5 is an electric circuit diagram according to an embodiment of the present invention, and FIG. 6 is a diagram showing the operation of the timer. 1... Combine harvester, 2... Divider, 2a... Divider on the side end of the cut area, 2b... Divider on the uncut area side, 4... Pre-processing section, 8... Sensor on the already cut area (right) side, 11... Uncut area ( Left) side sensor, 16, 16a, 16b... Uncut area side turning command, 17, 17a, 17b... Already cut area side turning command, 21, 21b, 21c, 22, 22b, 22
c... Turning command, 21a, 22a... Timer, 21
d...Signal converter, 26...Uncut area (left) side turning solenoid, 27... Already cut area (right) side turning solenoid, 33... Rotation sensor.

Claims (1)

[Scope of utility model registration request] In a combine harvester having a large number of dividers, a cut section side sensor is provided at the divider portion at the end of the cut section side, and an uncut section side sensor is provided at the divider section at the uncut section side, and the The mowed plot side turning command immediately excites the mowed plot side deflection solenoid without any delay time, and the uncut plot side sensor is immediately activated by the uncut plot side turning command of the mowed plot side sensor. furthermore, connects the already-mown area side turning command of the un-mown area side sensor to the already-mown area side turning solenoid via a timer that emits a pulse signal that rises after a predetermined delay time from the transmission of the command;
The uncut area side turning command of the uncut area side sensor is
The solenoid is connected to the uncut section side redirection solenoid via a timer that emits a pulse signal that rises immediately without delay time, and the timer is further set to emit a continuous signal after emitting an intermittent pulse signal a predetermined number of times. A direction sensor device for a combine harvester.