JP3831699B2 - Combine control device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a turning control device for a grain discharge cylinder in a combine equipped with a grain discharge cylinder that turns based on actuator driving.
[0002]
[Prior Art and Problems to be Solved by the Invention]
Generally, in this kind of combine, a grain discharge cylinder for discharging and transporting the harvested grain to the outside of the machine is configured to rotate based on the actuator drive, and the harvested grain is discharged at a desired turning position. There is something that can be done, but in order to turn the grain discharge cylinder to the desired discharge position, it is not necessary to keep the turning operation switch ON, but confirm that the desired discharge position has been reached Therefore, it is necessary to turn off the turning operation switch. For this reason, during the turning operation of the grain discharge cylinder, there is no room for other work due to the switch operation.
Therefore, a rotation position detection sensor for detecting the rotation position of the grain discharge cylinder, a discharge position setting device for setting the discharge position of the grain discharge cylinder, and an automatic rotation switch for starting automatic rotation control, and When the automatic turning switch is operated, the one that automatically turns the grain discharge tube to the set discharge position has already been put into practical use.
[0003]
[Means for Solving the Problems]
In view of the above circumstances, the present invention was created for the purpose of providing a swivel control device for a grain discharge cylinder in a further improved combine. A turning actuator for turning the grain discharge cylinder, a turning position detection sensor for detecting a turning position of the grain discharge pipe, a storage position detection switch for detecting a storage position of the grain discharge pipe, and a grain discharge A discharge position setting device for setting the discharge position of the cylinder, an automatic rotation switch for starting automatic rotation control, and turning control of the grain discharge cylinder to the set discharge position automatically when the automatic rotation switch is operated in combine comprising a turning control section that, the the swivel control unit, setting value change ignore to ignore this be changed set value by the operation of the discharge locator during the automatic turning Provided with a stage, once when the automatic turning operates the automatic turning switch again after finishing is characterized in that the control automatically turning on the basis of the set value changed by the operation of the discharge locator .
[0004]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a combine, and the combine 1 includes a pre-processing unit 2 that cuts the stems, a threshing selection unit 3 that threshs the grains from the cut stems and selects the threshed grains, It comprises a post-processing unit 4 that discharges the threshed waste, a grain tank 5 that stores the selected grains, a crawler type traveling unit (not shown), a driving unit 8 provided with a driver's seat 7, and the like. However, these basic configurations are all conventional.
[0005]
At the bottom of the grain tank 5, a lateral conveying spiral 9 facing in the front-rear direction is installed horizontally, and the grains in the tank are laterally conveyed to the rear of the tank based on the rotational drive of the lateral conveying spiral 9. Since the lower end portion of the vertical conveying cylinder 10 erected at the rear of the tank is connected to the rear end of the conveying spiral 9, the grains horizontally conveyed to the rear of the tank are vertically incorporated in the vertical conveying cylinder 10. Based on the rotational drive of the transport spiral 11, it is lifted and transported to the upper end of the vertical transport cylinder 10.
[0006]
Reference numeral 12 denotes a grain discharge cylinder connected to the upper end of the vertical conveying cylinder 10 so as to be swingable and swivelable. The grain discharging cylinder 12 is connected to the vertical conveying spiral 11 for discharging. Since the transport spiral 13 is internally provided, the grain lifted and transported to the upper end of the vertical transport cylinder 10 can be discharged out of the machine from the tip of the grain discharge cylinder 12.
[0007]
Further, a hydraulic cylinder 14 for undulation operation (hereinafter referred to as raising / lowering operation) and a motor for turning operation (turning actuator) 15 are connected to the base end portion of the grain discharge cylinder 12. In other words, the grain discharge cylinder 12 stored in the lowered posture at the predetermined storage turning position can be raised to the desired discharge turning position by the operation of the motor 15 after being raised by the operation of the hydraulic cylinder 14. However, the grain discharge cylinder 12 further includes a potentiometer (turning position detection sensor) 16 (built in the motor 15 in this embodiment) for detecting the turning position and an upper limit switch 17 for detecting the rising limit position. Are connected to a storage limit switch (storage position detection switch) 18 for detecting the storage state.
[0008]
On the other hand, 19 is a control unit (turning control unit) configured by using a so-called microcomputer. The control unit 19 is described later in addition to the potentiometer 16, the upper limit switch 17, and the storage limit switch 18 described later. Automatic discharge switch (automatic swivel switch) 20 for starting automatic discharge control, discharge position setting volume (discharge position setting device) 21 for setting the discharge position of the grain discharge cylinder 12, and automatic discharge control are interrupted While a signal is input from the stop switch 22 or the like, an operation command is output to the motor 15, the lifting solenoid valve 14a and the lowering solenoid valve 14b of the hydraulic cylinder 14, the horn 23 that generates an alarm sound, or the like. It is like that. That is, the control unit 19 is a discharge cylinder control that performs automatic discharge control ON / OFF and target value calculation, an automatic discharge control that actually controls the movement of the grain discharge cylinder 12 to a set discharge position (subroutine for discharge cylinder control), etc. Hereinafter, the control procedure of the discharge cylinder control and the automatic discharge control will be described with reference to a flowchart.
[0009]
In the discharge cylinder control, first, it is determined whether or not the stop switch 22 is ON / OFF. If the determination is ON, signal output to the motor 15, the raising solenoid valve 14a and the lowering solenoid valve 14b is stopped. In addition, an automatic discharge stop process for resetting the start flag of the automatic discharge control is performed. When it is determined that the stop switch 22 is OFF, the start flag is subsequently referred to. Then, when the start flag is in the reset state, it is determined whether the storage limit switch 18 is ON or OFF, and only when the determination is ON, the operation of the automatic discharge switch 20 (signal change from OFF to ON) is performed. It comes to judge. That is, the operation of the automatic discharge switch 20 is enabled only when the grain discharge cylinder 11 is stored, and the automatic discharge stop process described above is performed in other states.
[0010]
When the operation of the automatic discharge switch 20 is determined, first, it is determined whether the detected value of the potentiometer 16 is “0” or “other than 0”, and when the detected value is “0”. After determining that a failure of the potentiometer 16 has occurred and issuing a warning from the horn 23, the automatic discharge stop process described above is executed.
[0011]
On the other hand, when the detected value of the potentiometer 16 is “other than 0”, the set value of the discharge position setting volume 21 is added to the detected value of the potentiometer 16 at the storage position, and this value is set as the turning target value. ing. In other words, the detection value of the potentiometer 16 at the storage position is used as a reference, and the setting value of the discharge position setting volume 21 is added to this to obtain the turning target value. Even if it does not correspond to this, the turning target value corresponding to the set value of the discharge position setting volume 21 can be acquired.
[0012]
Further, after calculating the turning target value, it is determined whether the turning target value is greater than or equal to a preset overflow value FFH (hexadecimal number) or less than the overflow value FFH. When the value is equal to or greater than the overflow value FFH, it is determined that a failure has occurred in the potentiometer 16, the discharge position setting volume 21, etc., an alarm is issued from the horn 23, and then the automatic discharge stop process described above is executed. It has become.
[0013]
On the other hand, when the turning target value is less than the overflow value FFH, the automatic discharge control which is a subroutine is executed after setting the start flag. After the start flag is set once, the calculation of the turning target value described above is performed. Since the automatic discharge control is directly executed without passing through the routine, even if the set value of the discharge position setting volume 21 is erroneously changed during the provisional automatic discharge control, the automatic discharge control is performed based on the initially set turning target value. Is to be executed.
[0014]
And when automatic discharge control is performed, after raising the grain discharge cylinder 12 automatically until the upper limit switch 17 is turned on, the grain discharge cylinder 12 is automatically turned by driving the motor 15, By stopping the automatic turning when the detected value of the potentiometer 16 becomes equal to or greater than the turning target value, the grain discharge cylinder 12 is automatically set at the set discharge position.
[0015]
In the embodiment of the present invention configured as described above, when automatic discharge control is executed by operating the automatic discharge switch 20, the grain discharge tube 12 is automatically raised from the storage position, and then the detected value of the potentiometer 16 is The motor 15 is driven until the turning target value is exceeded, and the grain discharge cylinder 12 is automatically set to the set discharge position of the discharge position setting volume 21, but only when the storage limit switch 18 is in the ON state. When the operation of the automatic discharge switch 20 is validated and the valid switch is operated, the set value of the discharge position setting volume 21 is added to the detected value of the potentiometer 16 at the storage position, and this value is used as the turning target value. Automatic discharge control will be performed. That is, the detected value of the potentiometer 16 at the storage position is used as a reference, and the set value of the discharge position setting volume 21 is added to this to obtain the turning target value. Even if not, the turning target value corresponding to the set value of the discharge position setting volume 21 can be acquired. Therefore, unlike the conventional case where the set value of the discharge position setting volume 21 is used as the turning target value as it is, it is not necessary to make the detected value of the potentiometer 16 correspond to the set value of the discharge position setting volume 21 in advance. As a result, the potentiometer 16 ( Fine adjustment work when assembling the motor 15) is unnecessary, and the assembling workability can be improved.
[0016]
In addition, when the effective operation of the automatic discharge switch 20 is determined, it is determined whether or not the detected value of the potentiometer 16 or the calculated turning target value is an abnormal value, and when it is determined to be an abnormal value. Determines that a failure has occurred in the potentiometer 16, the discharge position setting volume 21, etc. and issues a warning from the horn 23, and then regulates signal output to the motor 15, the raising solenoid valve 14a and the lowering solenoid valve 14b. Since the start of the automatic discharge control is canceled, it is possible not only to notify the failure of the potentiometer 16, the discharge position setting volume 21, and the like, but it is also possible to prevent malfunctions based on abnormal values.
[0017]
Furthermore, once the automatic discharge control is started, the automatic discharge control is directly executed without going through the calculation routine for the turning target value. Therefore, it is assumed that the set value of the discharge position setting volume 21 is erroneously changed during the temporary automatic discharge control. However, this change in the set value can be ignored, and as a result, the grain discharge cylinder 12 can be automatically controlled to the original set discharge position without being affected by an erroneous operation.
Further, when the automatic discharge switch 20 is operated again after the automatic discharge control is completed, the start flag is reset, so that the setting of the changed discharge position setting volume 21 is changed by passing through the turning target value calculation routine again. It can be automatically controlled based on the value.
[0018]
[Function and effect]
In short, the present invention is configured as described above, so that when the automatic turning switch is operated, the grain discharge cylinder is automatically turned to the set discharge position, and the automatic discharge control is in progress. Even if the set value of the discharge position setter is changed by mistake, this change in the set value can be ignored, and as a result, the grain discharge cylinder can be automatically returned to the original set discharge position without being affected by erroneous operation. Can be controlled.
[Brief description of the drawings]
FIG. 1 is a plan view of a combine.
FIG. 2 is a perspective view of an operation panel.
FIG. 3 is a block diagram showing input / output of a control unit.
FIG. 4 is a flowchart showing discharge cylinder control.
FIG. 5 is a flowchart showing automatic discharge control.
[Explanation of symbols]
1 Combine 12 Grain discharge cylinder 15 Motor (turning actuator)
16 Potentiometer (turning position detection sensor)
18 Storage limit switch (Storage position detection switch)
19 Control unit (turn control unit)
20 Automatic discharge switch (automatic turning switch)
21 Discharge position setting volume (Discharge position setting device)

Claims (1)

A swivel-supported grain discharge cylinder, a turning actuator for turning the grain discharge pipe, a turning position detection sensor for detecting the turning position of the grain discharge pipe, and a storage position of the grain discharge pipe A storage position detection switch to detect, a discharge position setter for setting the discharge position of the grain discharge cylinder, an automatic turn switch for starting automatic turn control, and a grain discharge when the automatic turn switch is operated In a combine comprising a turning control unit for automatically turning the cylinder to a set discharge position,
The turning control unit is provided with setting value change ignoring means for ignoring the setting value even if the setting value is changed by operating the discharge position setting device during the automatic turning .
When the automatic turning switch is operated again after the automatic turning is finished, the automatic turning control is performed based on the set value changed by the operation of the discharge position setting device. Control device.

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