JPS6337768Y2 - - 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.

Generally, in the case of mowing, there are two types of work: row mowing, which is done along the rows, and cross mowing, which is done perpendicular to the rows. During row mowing, the left sensor, i.e., the row mowing sensor, installed behind the divider on the uncut area side detects the direction of the mowing.
The reaper follows the culm row on the left side of the mowing width, and when mowing horizontally, the culm rows are not uniform, so the left sensor cannot control the direction, and it is necessary to control the direction using the right sensor, i.e., the sensor for mowing horizontally, which follows the row between the already mowed area and the unmowed area. For this reason, direction sensors are provided on both the left and right sides, and the sensors on both the left and right sides are manually switched by operating a switch depending on the mowing conditions. In other words, when mowing in rows, the left (unmowed area) divider detects the correlation distance with the culm using a sensor provided on the left divider so that the divider runs through the middle of the row, and the direction of the reaper is controlled by manually switching the sensor provided on the left divider (unmowed area) to detect the culm at the outermost edge of the unmowed area, and when mowing horizontally or scattering, the direction of the reaper is controlled by manually switching the sensor provided on the right divider (already mowed area) to detect the culm. Therefore, when the harvester is turned around, which requires many operations, the operator must manually operate the switch every time the harvester changes from row harvesting to side harvesting or vice versa, which causes considerable inconvenience to the operator. Also, if the operator neglects or forgets to perform the switching operation, the harvester cannot be properly controlled with respect to the stalks, resulting in some stalks being left uncut or rows being removed.

In order to eliminate the above-mentioned drawbacks, the present applicant:
A sensor for row mowing and a sensor for horizontal mowing are installed on the left and right sides of the reaper, and these sensors detect the condition of the grain culm that is unique to row mowing or horizontal mowing, thereby controlling the direction control circuit for row mowing or horizontal mowing. Directional control of the reaping machine that can automatically switch to correspond to the direction of the reaping machine and control the moving direction of the reaping machine, and also maintains that state for a certain period of time when the direction control circuit is switched to the horizontal cutting state. We have proposed a device, but even with this device, the holding time in the horizontal cutting state is constant, so when the reaper is running at high speed, the holding time is too long and the control tends to be too far away from the uncut grain culm. On the other hand, when the reaper is running at a low speed, the holding time is too short and the reaper is controlled to tend to rush into the uncut grain culm, creating a new problem in that stable horizontal cutting control cannot be performed.

Therefore, the present invention is designed to maintain the direction control circuit of the reaper in the horizontal mowing control state for a certain period of time (T ₁ ) by detecting the grain culm condition peculiar to horizontal mowing using the left and right sensors proposed by the applicant. In this type of reaping machine, the holding time _T1 can be changed to enable horizontal mowing control according to row spacing and vehicle speed, thereby eliminating the drawbacks of the conventional reaping machine, and furthermore, the present applicant proposed the above. It is an object of the present invention to provide a direction control device for a reaper that eliminates the problems of the reaper.

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 are connected _in series, and further includes a circuit having a relay R B operated by a switch S _B built in the left sensor 10 and a relay R _C operated by a switch S _C built in the right sensor 12. The circuits having the same function are connected in parallel. Additionally, there is an intermediate splitting switch S _N which is switched to the contact a side during splitting work and always switched to the contact b side when controlling the direction of the reaping machine, and a relay contact S which is turned on when the relay R _B is energized. _RB1 and said relay R _C
A sensor switching circuit c is connected in parallel to operate a relay Ry, which is connected in series with a relay contact S _RC1 and a timer T _U1 , which are turned off when _energized . Switch so that the state shown in the figure is reversed. Also,
When the relay Ry is de-energized, the switching contact a of the relay contact S _RY is turned on and the switch S _A built in the left sensor 10 is turned on, or when the switching contact b of the relay contact S _RY is turned on and the relay is turned on. They are connected in parallel to a relay contact S _RC2 which is turned on by energization of R _C so that a delay timer T ₂ is activated. Furthermore, the continuity of relay contact S _RB2 , which is turned on by energization of contact a and relay R _B , or the continuity of switching contact b and switch S _D built in the right sensor 12, and the switching contact c or d of relay contact S _RY . Due to the continuity between the timer contact S _T2 , which is energized by the delay timer _T2 , and the switching contact e or f of the relay contact S _RY ,
The solenoid S IL operates the clutch on the left drive of the reaper and the solenoid _IL also operates the clutch on the right drive so that they are respectively driven.
S _IR is connected in parallel. As shown in FIG. 4, the timer T _U1 outputs an output at the same time as it is activated by the input, and the output continues for a predetermined period of time even after the input is cut off.
For example, the holding time T ₁ can be set in stages or non-stop by a variable resistor V manually operated by a switching device installed near the driver's seat ₇ . The holding time _T1 is normally set to the time required for the reaper to move between one row. As another example, the running speed V of the reaper is detected by a running speed detector V installed at a suitable location on the reaper body, and the holding time T ₁ is determined based on the running speed V, as shown in FIG. The output changes approximately linearly, increasing at low speeds and decreasing at high speeds, and as shown in Fig. 5, the delay timer _T2 outputs the output after a certain period of time t after activation, as shown in Fig. 5. sensor bar 1 between grain culms
A dead zone is formed so that the actuators 1 and 13 do not operate even if they reach rotational positions A and A'. Furthermore, the relay
The relay contact S _RY operated by _R
is closed and contacts b, d, and f are open, and after operation, contacts a, c, and e are open and contacts b, d, and f are closed.

Since the present invention has the above-described configuration, the reaper can be used for row mowing, which involves cutting along rows as shown in Figures 7 (a), (i), and (c). The sensor bar 13 of the horizontal mowing sensor 12 on the right side in the direction of movement, that is, on the side of the already cut area, is in the rotation range A' in FIG. Yes, there is a switch S _C built into the horizontal mowing sensor 12.
is on, relay R _C is energized, which opens relay contact S _RC1 and starts the timer.
T _U1 is not activated and relay R _Y is not energized.
Therefore, relay contact S _RC2 is closed, but the relay contact
Switching contact b of S _RY is opened, and the electric circuit of the reaper is automatically set to the row cutting state so that the direction of movement of the reaper is controlled only by the row cutting sensor 10 on the uncut area side, that is, the left side. .

Under these circumstances, the row mowing work was carried out,
When the rows of grain culms are in the state shown in (A) in Figure 7, the sensor bar 11 of the sensor 10 does not come into contact with the unstubbed stubble 15b, so it is in the rotation range A, and the built-in switch S _A of the sensor 10 is activated. is turned on. This activates the delay timer _T2 , which turns on the timer contact S _T2 , which forms a dead zone to prevent activation between the grain culms, after a delay of t, and activates the solenoid S _IR that operates the right-hand drive of the reaper. ,
The reaper turns to the right. Next, when the state (i) is reached,
Since the sensor bar 11 comes to the rotation range B, the switches S _A and S _B built into the sensor 10 are both turned off, and in this state, the solenoid S _IR that operates the right drive section and the solenoid S that operates the left drive section are turned off. Neither _IR is operated at all, and the reaper remains straight ahead. Furthermore, in state (C), the sensor bar 11 enters the rotation range C, so
Only switch S _B built into sensor 10 is turned on, relay R _B is energized, relay contact S _RB2 is turned on, and the circuit including switching contact a, relay contact S _RB2 , and switching contact c becomes conductive. , solenoid S _IL is activated, causing the reaper to turn to the left. In this way, the moving direction of the reaper body can be controlled to follow the lateral displacement of the grain culm in the row direction based on the detection by the row mowing sensor 10.

Next, a horizontal mowing operation in which the reaper is used to cut across the row mowing as shown in FIGS. 7(e), (o), and (f) will be described. In this case, for convenience of explanation, I will explain (o), (k), and (e) in this order.

First, when the reaper is in the (O) position relative to the row of grain culms, the sensor bar 1 of the left sensor 10
1 is rotated in the rotation range C, and the sensor bar 13 of the right side sensor, that is, the horizontal mowing sensor 12 is rotated in the rotation range B'. As a result, only switch S _B in sensor 10 and sensor 12
Since both switches S _C and S _D in the switch are turned off, relay R _B is energized and its relay contact S _RB1 is turned on, and relay contact S _RC1 is also in the on state, and the relay is activated via timer T _U1 . R _Y is energized. As a result, relay contact S _RY of relay R _Y switches,
The switching contacts b, d, and f are turned on, and the switching contacts a, c, and e are turned off, and the circuit of switch S _A and relay contact S _RB2 , that is, the left row mowing sensor 10
The circuit is cut off, and the circuit switches to the circuit of relay contact S _RC2 and switch S _D , that is, the circuit of the right side mowing sensor 12, but the relay contact after switching contact b
Since S _RC2 and switch S _D are both off, no current flows through the left and right solenoids S _IL and S _IR , and therefore the reaper moves straight. next,
When the state (a) is reached, the sensor bar 11 is in the state C, the sensor bar 13 is also in the state H', the switch S _A of the sensor 10 is off, the switch S _B is on, and the switch S _C of the sensor 12 is turned off. is off and switch S _D is on, so switch S _D
The circuit state is the same as state (o) above except that the switch is turned on, and therefore the circuit formed by changeover contact b, switch S _D , and changeover contact d becomes conductive, and solenoid S _IR is energized, causing the reaper to move to the right. do. When state (e) is reached, this state (e) at first glance corresponds to state (i) or (c) in the case of row mowing work explained earlier, but normally (e) is the case. or timer T _U1 after state
Since T occurs within ₁ hour, relay R _Y is kept energized for a certain period of time by timer T _U1 ,
Therefore, since the relay contact _SRY is switched and held, the sensor bar 13 is in the rotation range A', and the switch _SC in the sensor 12 is turned on.
Even if relay contact S _RC1 is turned off via relay R _C , delay timer T ₂ is activated by switching contact b and relay contact S _RC2 , and after t time, timer contact S _T2 is activated.
is turned on, and due to the on state of the switching contact f connected in series thereto, the solenoid S _IL is energized for a time T ₁ -t, and the reaper turns to the left. That is, the sensor bar 13 is in the rotation range A', and the horizontal mowing sensor 12 is operated to the row mowing sensor 10.
Even if the operation is switched, the direction is not immediately switched, but the direction is controlled by the side mowing sensor 12 for the holding time of the timer T _U1 , which is appropriately set according to the row spacing and vehicle speed. In addition, due to long bends in the rows of uncut grain culms, timer T _U1
T Even if the condition (e) continues after ₁ hour,
Once the control state is switched to the state controlled by the row mowing sensor 10 on the left, but since the grain culms are not aligned during horizontal mowing, the rotation state of the sensor bar 11 of the sensor 10 on the left is almost in the state shown in C. Therefore, the reaper is moved to the left under the same control as the state (c) during row mowing described above, and immediately returns to the above state (o) or (c) and returns to the horizontal mowing operation.

As explained above, according to the present invention, the row cutting sensor 10 and the side cutting sensor 12 are provided on the left and right sides of the reaper, respectively, and these sensors 10,
12 detects the state of the grain culm peculiar to row mowing or horizontal mowing, so that the direction control circuit can be automatically switched to correspond to row mowing or horizontal mowing work, thereby controlling the advancing direction of the reaper. In addition, when the direction control circuit is switched to the horizontal mowing state, the timer T _U1 , which has a variable set time, holds that state for a predetermined time, so that it is possible to switch from row mowing to horizontal mowing or vice versa. When the arrangement of grain culms changes from horizontal mowing to row mowing, the driver does not need to perform a switching operation to respond to the change in the mowing condition, and the timer T _U1 can be operated using a switching device near the driver's seat. When the horizontal mowing control time is adjusted, the operation is easy and the planting conditions of the field can be adjusted by the operation, so stable horizontal mowing and
It becomes possible to control the direction of the reaper by row cutting switching control, and if the above-mentioned timer T _U1 is set to change the horizontal cutting control time of the reaper in accordance with the running speed of the reaper, Since the holding time corresponding to the running speed is automatically obtained, there is no need to change the timer value every time the running speed of the reaper is changed. One row mowing and side mowing sensor 10, 1 is provided on the uncut side and the already cut side.
2, and only 2 switches are required for each, and a simple device including a control device is sufficient.Furthermore, for example, when row mowing, two switches are required for the row mowing sensor 10.
Even if a row of plants enters, a turning command is immediately issued to the uncut side, returning to the normal state where only one row is inserted, and reliable direction control is performed.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing the front part of the reaper according to the present invention, Fig. 2 is a schematic enlarged plan view showing the sensor part, Fig. 3 is an electric circuit diagram according to the invention, and Fig. 4 is a time limit timer T. A time chart of the holding time T ₁ at _U1 , FIG. 5 is a time chart of the delay timer T ₂ , and FIG. 6 is an explanatory diagram showing the relationship between the running speed V of the reaper and the holding time T ₁ of the timer T _U1 ,
FIG. 7 is a diagram showing the relationship between the sensor portion of the reaper and the grain culm to explain the operation of the present invention. 1... Unmown section side divider, 3... Already cut section side divider, 10... Row mowing sensor,
12...Sensor for horizontal mowing, S _A ...Switch for turning direction on the uncut side of the sensor for row mowing, S _B ...Switch for turning direction on the already cut side of the sensor for row mowing,
S _C ...Turning command switch on the side of the mowed area of the sensor for horizontal mowing, S _D ...Turning command switch on the side of the uncut area of the sensor for horizontal mowing, C...Sensor switching circuit,
T _U1 ...Timed timer.

Claims (1)

[Scope of claim for utility model registration] (1) The position of the grain culm is set at 3 on the uncut side divider part.
There is one row cutting sensor that detects the divided area, and one row cutting sensor that detects the position of the grain culm in the divided area is installed on the divider part on the already cut side.
In a reaper equipped with horizontal mowing sensors, the direction of the reaper is controlled in the corresponding direction based on the row mowing sensors, and the horizontal mowing sensor also controls the direction of the mowing machine in the corresponding direction based on the row mowing sensors. When the non-mow side turning command is released, the horizontal mowing sensor is switched to the operating state, and furthermore, the horizontal mowing sensor is activated for a certain period of time by the non-mow side turning command of the horizontal mowing sensor. 1. A direction control device for a reaping machine, characterized in that a timer is provided to keep the timer in operation, and the holding time of the timer can be changed. (2) Utility Model Registration In the direction control device for a reaper described in claim 1, the holding time set by a timer can be changed to stepless or stepwise by a switching device installed near the driver's seat. A direction control device for a reaper, characterized by: (3) Utility Model Registration In the direction control device for a reaper as described in claim 1, the holding time set by a timer is determined by a speed signal from a running speed detector installed at an appropriate location on the reaper body. A direction control device for a reaper, characterized in that it can be changed depending on the situation.