JP3720660B2 - Combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a combine equipped with automatic storage control means for automatically turning a grain discharging auger to a storage position.
[0002]
[Prior art]
Generally, in this type of combine, a grain discharging auger that can pivot with respect to the fuselage, an auger turning actuator that forcibly turns the auger, and a storage position detecting means for detecting the storage position of the auger And an automatic storage control means for automatically turning the auger to the detection position of the storage position detection means.
[0003]
[Problems to be solved by the invention]
However, in the above, if the storage position detection means fails, the auger does not automatically stop at the storage position, but continues to turn to the mechanical turning limit position, so that the auger comes into contact with an obstacle. May occur.
[0004]
[Means for Solving the Problems]
The present invention has been created in view of the above-mentioned circumstances and has been created for the purpose of solving these problems. The invention of claim 1 includes a grain discharging auger that is swivelable relative to a machine body, An auger turning actuator for forcibly turning the auger, an auger position detecting means for detecting the turning position of the auger, a storage position detecting means for detecting the storage position of the auger, and a detection position of the storage position detecting means automatically pivoted actuating the auger to at combine with an automatic storage control means that automatically housing the auger on the basis of the stored position detection of the stored position detecting means, the said automatic storage control unit, automatic auger during storage turning operation, whether the auger has passed the storage position is determined based on the detection signal of the auger position detecting means, the auger is also stored position detecting means through the storage position If no, the it is judged that the abnormality based on the detection signal of the storage position passing auger position detection means, automatically stops without turning the automatic storage pivoting movement of the auger until the auger mechanical turning limit position storage The combine is characterized by providing an abnormality determining means. In other words, even if the storage position detection means fails, the auger automatic storage turning operation can be stopped in the vicinity of the storage position, so that the auger does not continue to turn to the mechanical rotation limit position. Inconvenience such as contact of an auger with an obstacle can also be avoided.
According to a second aspect of the present invention, in the first aspect, the storage position detecting means comprises a limit switch for detecting the storage position of the auger which is a fixed position, while the auger position detection means is an auger that can be arbitrarily changed. It is the combine characterized by being comprised with the potentiometer in order to detect the grain discharge position of this. In other words, in order to determine the abnormality of the storage position detection means by using a potentiometer for detecting the grain discharge position, it can be implemented with an easy change to the extent that the program is partially rewritten. It is possible to avoid the increase in the number of parts and the complexity of the structure without adding.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, one 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 for cutting stem stalks, a threshing selection unit 3 for threshing grains from the cutting stalks and sorting the grains, and selected grains Is composed of a grain tank 4 for storing sewage, a post-processing unit 5 for discharging threshed waste, a crawler-type traveling unit 6, an operation unit 7 provided with various operation tools, and the like. Are both conventional.
[0006]
The grain stored in the grain tank 4 includes a fixed pipe (not shown) fixed to the lower end of the rear surface of the grain tank 4, and a vertical pipe 8 rotatably connected to the fixed pipe. In addition, it is discharged out of the machine via a grain discharging auger 9 that can rotate integrally with the upper end of the vertical pipe 8 and that can be raised and lowered in the vertical direction (movable up and down). Yes. That is, a first spiral transport body (not shown) facing in the front-rear direction is disposed at the bottom of the grain tank 4, and the grain transported to the fixed pipe by the first spiral transport body is transferred to the vertical pipe. 8 and the auger 9 are configured to take over the second and third spiral carriers (not shown).
[0007]
The auger 9 moves up and down in accordance with the expansion and contraction operation of the lifting hydraulic cylinder 10 interposed between the vertical pipe 8 and the auger 9, while the forward and reverse of the turning electric motor 11 that rotates the vertical pipe 8. Although it turns with drive, it is stored in a predetermined storage position during non-discharge work. In other words, a substantially Y-shaped auger storage stand 12 is erected at a predetermined position on the upper part of the machine body, and the auger 9 is stored by turning to a position above the auger storage stand 12 and then lowering. It has become so.
[0008]
Reference numeral 13 denotes a turning drive mechanism in which the turning electric motor 11 is incorporated. The turning drive mechanism 13 is connected to a speed reducer 14 that decelerates the power of the turning electric motor 11 and an output shaft 15 of the speed reducer 14. The rotary drive gear 16 is provided integrally, and the ring gear 17 meshes with the rotary drive gear 16. Since the ring gear 17 is integrally fixed to the outer peripheral portion of the vertical pipe 8, the vertical pipe 8 and the auger 9 are integrally swiveled with the forward / reverse drive of the swivel electric motor 11. The turning position of the auger 9 is detected by an auger position detection sensor (potentiometer) 18 incorporated in the turning drive mechanism 13 and transmitted to a control unit 19 described later.
[0009]
Reference numeral 20 denotes a storage position detection switch provided at a position facing the outer peripheral portion of the vertical pipe 8. The storage position detection switch 20 is a limit for detecting the pushing operation of the detection lever 20a formed in a substantially L shape in plan view. It consists of a switch (microswitch). That is, a mountain-shaped pushing member 21 protrudes from the outer peripheral portion of the vertical pipe 8, and when the pushing member 21 pushes the detection lever 20a at the auger retracted position, the storage position detection switch 20 is activated. The detection signal is transmitted to the control unit 19.
[0010]
Reference numeral 22 denotes an auger operation unit provided in the operation unit 7. The auger operation unit 22 includes an auger manual operation lever (joystick) 23 for performing manual turning operation and manual lifting operation of the auger 9, which will be described later. A turning position setting dial 24 for setting an automatic stop position of “auger automatic turning control”, an auger automatic turning switch 25 for executing “auger automatic turning control”, and “auger automatic storage control” described later. An auger automatic storage switch 26, an auger automatic turning operation, and an emergency stop switch 27 for stopping the auger automatic storage operation are provided.
[0011]
The control unit 19 is configured using a microcomputer (including a CPU, a ROM, a RAM, and the like), and has an auger position detection sensor 18, a storage position detection switch 20, an auger manual operation lever described above on its input side. 23, a turning position setting dial 24, an auger automatic turning switch 25, an auger automatic storage switch 26, and an emergency stop switch 27, an auger upper limit switch 28 for detecting the upper limit position of the auger 9 and the like are provided via a predetermined input interface circuit. On the other hand, on the output side, in addition to the turning electric motor 11 described above, a raising solenoid 29a, a lowering solenoid 29b, etc. of an auger lifting electromagnetic valve 29 are connected via a predetermined output interface circuit. . That is, the control unit 19 performs “auger manual operation control” for turning and raising / lowering the auger 9 according to the operation signal of the auger manual operation lever 23, and the detected position of the auger position detection sensor 18 is the set position of the turning position setting dial 24. Control programs such as “auger automatic turning control” for automatically turning the auger 9 until it coincides with “automatic auger storage control” for automatically turning the auger 9 to the storage position (lifting control). Hereinafter, the control procedure of the “auger automatic storage control”, which is the main part of the present invention, will be described with reference to flowcharts.
[0012]
In the “auger automatic storage control”, first, a rising signal (OFF → ON) of the auger automatic storage switch 26 is determined, and when the rising signal is determined, a storage flag is set. Then, in the storage flag set state, the set state of the rising end flag is determined. If it is determined that the rising end flag is in the reset state, the auger 9 is automatically raised for a predetermined time and then raised. Set the end flag. If it is determined that the ascent end flag is in the set state, the set state of the turning end flag is determined. If it is determined that the turning end flag is in the reset state, the storage position detection switch 20 is The auger 9 is automatically turned until turned ON, and then the turning end flag is set. On the other hand, when it is determined that the turning end flag is in the set state, the auger 9 is automatically lowered for a predetermined time, then all the flags are reset and the auger automatic storing operation is ended. That is, the “auger automatic storage control” automatically performs a series of auger storage operations such as a raising operation of the auger 9, a turning operation to the storage position, and a lowering operation at the storage position. When is turned on, all the flags are immediately reset and the automatic storing operation of the auger 9 is stopped.
[0013]
In the “auger automatic storage control”, as described above, when it is determined that the turning end flag is in the reset state, the auger 9 is automatically turned until the storage position detection switch 20 is turned on. During automatic turning, it is determined whether or not the auger 9 has passed the storage position based on the detection signal of the auger position detection sensor 18, and if the determination is YES, all the flags are immediately reset. Thus, the automatic storing operation of the auger 9 is stopped. That is, even if the storage position detection switch 20 breaks down, the automatic storage turning operation of the auger 9 can be stopped in the vicinity of the storage position, so that the auger 9 does not continue to turn to the mechanical rotation limit position. In addition, inconveniences such as contact of the auger 9 with an obstacle can be avoided. In the present embodiment, the detection value of the auger position detection sensor 18 is stored as a reference value when the auger is stored, and the detection value of the auger position detection sensor 18 exceeds the reference value and the stroke is predetermined during automatic storage turning. By determining that the storage position detection switch 20 is abnormal when the angle (dead zone threshold) is reached, malfunction due to the detection error of the auger position detection sensor 18 is prevented.
[0014]
In the configuration as described above, a turning electric motor 11 for turning the auger 9, an auger position detection sensor 18 for detecting the turning position of the auger 9, and a storage position detection switch 20 for detecting the storage position of the auger 9. And “auger automatic storage control” for automatically turning the auger 9 to the detection position of the storage position detection switch 20. If the storage position detection switch 20 does not operate even after passing, the storage position detection switch 20 fails because the automatic storage turning operation of the auger 9 is stopped based on the detection signal of the auger position detection sensor 18. Even in this case, the automatic storage turning operation of the auger 9 can be stopped in the vicinity of the storage position. Not Motori is not to continue to pivot to a position, it is possible to auger 9 also avoids inconvenience such that contact with the obstacle.
[0015]
Moreover, in order to determine the abnormality of the storage position detection switch 20 using the existing auger position detection sensor (potentiometer) 18 which detects a grain discharge position, it can be implemented by an easy change that can be partially rewritten. As a result, it is not necessary to add a sensor or the like, and an increase in the number of parts and a complicated structure can be avoided.
[Brief description of the drawings]
FIG. 1 is a side view of a combine.
FIG. 2 is a plan view of the same.
FIG. 3 is a front view of the same.
FIG. 4 is a rear view of the above.
FIG. 5 is a side view of a turning drive mechanism.
FIG. 6 is a plan view of the same.
FIG. 7 is a plan view of an auger operation unit.
FIG. 8 is a block diagram showing input / output of a control unit.
FIG. 9 is a flowchart showing “auger automatic storage control”;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combine 4 Grain tank 8 Vertical pipe 9 Auger 10 Lifting hydraulic cylinder 11 Turning electric motor 12 Auger storage base 18 Auger position detection sensor 19 Control part 20 Storage position detection switch 23 Auger manual operation lever 24 Turning position setting dial 25 Auger Automatic swivel switch 26 Automatic auger switch 27 Emergency stop switch

Claims (2)

Grain discharging auger that can turn with respect to the machine body, an auger turning actuator that forcibly turns the auger, an auger position detecting means for detecting the turning position of the auger, and a storage position of the auger a housing position detection means for automatically pivoted actuating the auger to the detection position of the storage position detecting means, and an automatic storage control means that automatically housing the auger on the basis of the stored position detection of the stored position detecting means The automatic storage control means determines whether the auger has passed the storage position based on the detection signal of the auger position detection means during the automatic storage turning operation of the auger, and the auger passes the storage position. If the storage position detecting means and does not operate, the it is judged that the abnormality based on the detection signal of the storage position passing auger position detection means, an automatic storage turning of the auger The work, combine the auger is characterized by providing an automatic storage abnormality determination means for stopping without turning up the mechanical pivot limit position.   3. The storage position detection means according to claim 1, wherein the storage position detection means is constituted by a limit switch for detecting the storage position of the auger which is a fixed position, while the auger position detection means detects an auger grain discharge position which can be arbitrarily changed. A combine that features a potentiometer.

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