JP2005065659A - Turning control of cereal grain-discharging auger in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve an effectiveness (continuous holding property and handling property) of a releasing means allowing the intrusion movement of a cereal grain-discharging auger into a limited region for the turning movement in a combine harvester equipped with an auger-operating means for operating the lifting up and down and turning of the cereal grain-discharging auger and an auger-controlling means limiting the turning movement within a prescribed lifting up and down range of the grain-discharging auger. <P>SOLUTION: This combine harvester is constituted so as to release the limiting region of turning movement of the cereal grain-discharging auger 10 on judging that a detecting signal by an auger turning position-detecting means (a potentiometer) 37 for detecting the turning position relative to the machine body of the cereal grain-discharging auger 10, is abnormal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a turning control device for a grain discharge auger in a combine provided with a predetermined turning range with respect to the airframe and a restriction region for a lifting range.

Conventionally, a grain discharge auger provided for discharging grain from a combine grain tank is provided so as to be pivotable about a longitudinal axis with respect to the machine body, and an auger in a lateral feed position is an auger in a vertical feed position. The grain discharge auger is configured to be movable between the grain discharge work position and the storage position.

  And it is configured to be able to switch between the state of automatically moving the grain discharge auger and the state of manually operating the grain discharge auger, and when moving the grain discharge auger manually, it traverses the top of the control unit If the auger in the posture turns in a low posture, there is a risk that it will come into contact with the operator, the cabin, etc. In order to avoid this, the grain discharge auger has a predetermined movement range, that is, the auger in the lateral feed posture has a predetermined height. A restriction region for prohibiting a swivel movement within a predetermined range is set for the following posture, and further includes a lift position detection means for detecting the lift position of the grain discharge auger, and a swing position detection means for detecting the swing position. On the basis of the detected information, intrusion prohibition control for prohibiting the grain discharge auger from entering the restricted area is executed.

Also, when a combine grain discharge auger is moved manually in a building with a relatively low ceiling, such as a barn or warehouse, the height of the ceiling of the building is lower than the lifting restriction area of the grain discharge auger. Since the grain discharge auger cannot be raised to a height exceeding the lifting restriction area and swung to the desired position, the position of the grain discharge auger must be set before storing the combine in a barn or warehouse. You have to change or move the combine stored in the barn or warehouse to correct the position of the grain discharge auger, and store the combine in the barn or warehouse. In order to allow the grain discharge auger to enter the swivel regulation region, manual operation type release means for releasing the intrusion prohibition control is provided so that the grain discharge auger can be moved by manual operation even in the state It is known to have (for example, see Patent Document 1.).

Japanese Patent No. 3200548

However, the manually operated release means for releasing the above-described intrusion prohibition control of the grain discharge auger is provided with an emergency stop switch (hand push button switch) that always urges the intrusion prohibition control release signal to return to the non-output state side. If this emergency stop switch breaks down, the intrusion prohibition control release signal cannot be output to the control unit, so the grain discharge auger enters the turning restriction area. It is impossible to move, and also when a manual operation type release means for releasing the invasion prohibition control of the grain discharge auger is provided alone, if there is a failure etc. of this release means, it is the same It is impossible to move the grain discharge auger into the turning restriction area.
Therefore, when the combine is stored in a narrow place such as a barn or a warehouse, the grain discharge auger cannot be moved and adjusted to a desired position.

  The problem to be solved is that, in a combine equipped with an auger control means for restricting a swiveling operation in a predetermined lifting range of the grain discharge auger, the grain discharge auger into the restricted region of the swiveling operation of the grain discharge auger. An effective release means that allows intrusion movement is provided.

  The present invention cancels the restriction of the turning operation of the grain discharge auger by the auger control means when it is determined that the detection signal by the auger turning position detection means for detecting the turning position of the grain discharge auger with respect to the machine body is abnormal. It is configured as described above.

  The turning control of the grain discharging auger in the combine according to the present invention is performed when the detection signal by the auger turning position detecting means for detecting the turning position of the grain discharging auger with respect to the airframe is abnormal. The grain discharge auger is allowed to enter the restricted area of the turning action of the grain discharge auger, and the restriction area of the turning action of the grain discharge auger described above is released. Since the state can be continuously maintained, the effectiveness (continuous retention and handling) as the turning restriction area releasing means is improved.

  For the purpose of providing an effective release means that allows the grain discharge auger to enter the restricted area of the turning operation of the grain discharge auger, a potentiometer that is a sensor for detecting the turning position of the grain discharge auger with respect to the aircraft is used. Realized.

  As shown in FIG.1 and FIG.2, the combine 1 selected the pre-processing part 2 which cuts a stem cocoon, and the threshing part 3 which threshs the grain from the cutting stalk and sorts out this grain. A grain tank 4 that stores grains, a post-processing unit 5 that discharges threshed waste, a crawler-type traveling unit 6, and an operation unit 7 that is provided with a driving seat 7a and various operation tools. I have.

The grains stored in the grain tank 4 are a fixed pipe 8 fixed to the lower end of the rear surface of the grain tank 4, a vertical pipe 9 that is pivotally connected to the fixed pipe 8, and a vertical pipe 9. It is discharged out of the machine via a grain discharge auger 10 that can rotate integrally with the upper end and that can be raised and lowered in the vertical direction (can be moved up and down).
That is, a first spiral transport body 11 facing in the front-rear direction is disposed at the bottom of the grain tank 4, and the grain transported to the fixed pipe 8 by the first spiral transport body 11 is transferred to the vertical pipe 9 and It is comprised so that it may be handed over by the 2nd, 3rd spiral conveyance body (not shown) housed in the grain discharge auger 10.

The grain discharge auger 10 is moved up and down in accordance with the expansion and contraction of an auger lifting cylinder 12 interposed between the vertical pipe 9 and the grain discharge auger 10, and an auger turning motor 13 that rotates the vertical pipe 9. Is turned according to the forward / reverse drive.
And the left turning operation of the grain discharge auger 10 is as shown in FIG.
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The left limit position is mechanically restricted, and the right turn operation is mechanically restricted at the right limit position.
Further, in the turning region between the left limit position and the right limit position, the storage position A for storing the grain discharge auger 10, the driving seat position B that is directly above the driving seat 7 a, and the traveling direction of the fuselage A reference position such as a right-hand discharge position C extending rightward and rightward is set, and between the storage position A and the right-hand discharge position C, the grain discharge auger 10 is connected to the grain tank 4 or The operation restriction for avoiding contact with the operator is performed.

  As shown in FIG. 4, an operation device 21 that is an operation means for horizontally turning (changing direction) and raising and lowering the grain discharge auger 10 is provided behind the driver seat 7 a. Is a turning / undulation operation lever 22 for manually turning and raising and lowering the grain discharge auger 10 to an arbitrary position, an automatic storage switch 23 for automatically turning and returning the grain discharge auger 10 from the discharge position to a predetermined storage position, A turning position setting dial 24 for setting the automatic turning stop position of the grain discharge auger 10, an automatic turning switch 25 for automatically turning to the automatic turning stop position of the grain discharge auger 10 set by the turning position setting dial 24, and an emergency stop switch 26 A grain discharge switch 27 for transferring the grain in the grain tank 4 to a storage tank of a truck or other transport vehicle is provided.

As shown in FIG. 5, the combine 1 is provided with a control unit 31 configured using a microcomputer (including a CPU, a ROM, a RAM, and the like). The input unit of the control unit 31 includes an upper limit switch 32 that detects the rising limit position of the grain discharge auger 10, a right turn switch 33 that detects a right turn operation of the turn / undulation operation lever 22, and a turn / undulation operation lever. A left turn switch 34 that detects the left turn operation of the turn 22, a lift switch 35 that detects the lift operation of the turn / undulation operation lever 22, a lower switch 36 that detects the lower operation of the turn / undulation operation lever 22,
While an auger turning position detection sensor (potentiometer) 37 for detecting the turning position of the grain discharge auger 10 is connected via a predetermined input interface circuit, in addition to the auger turning motor 13 described above, the auger turning motor 13 is connected to the output unit. An electromagnetic brake 38 that applies brake braking to the output shaft of the swing motor 13, an ascending solenoid 41a, an descending solenoid 41b, an alarm buzzer 42, and the like of the electromagnetic valve 41 for the auger elevating cylinder 12 are connected via a predetermined output interface circuit. .

  And the control part 31 is an auger manual control program which controls the turning operation | movement and raising / lowering operation | movement of the grain discharge auger 10 according to operation of the turning / undulation operation lever 22, and the grain discharge auger 10 is used for the grain tank 4 or an operator. Operation control for avoiding contact, that is, an auger turning (intrusion) prohibition control program for prohibiting entry of the grain discharge auger 10 into the turning restriction region, and an auger turning restriction release control for releasing the auger turning prohibition control The auger turning restriction release control procedure is described below with reference to the flowchart shown in FIG.

  First, in step S1, it is determined whether or not an auger turning position detection sensor (potentiometer) 37 that detects the turning position of the grain discharge auger 10 is operating normally, and the auger turning position detection sensor 37 operates normally. 7, that is, in a state where the connector (not shown) of the auger turning position detection sensor 37 shown in FIG. 7 is temporarily removed or a failure has occurred, the detection signal of the auger turning position detection sensor 37 is If it is determined that the abnormal state is not output, the process proceeds to step S2.

  In step S2, the turning restriction of the grain discharge auger 10 is released, and the turning / raising / lowering operation of the grain discharge auger 10 by operating the turning / undulation operation lever 22 becomes possible, and then the process proceeds to step S3.

  In step S3, it is determined whether or not the turning / raising / lowering operation of the grain discharge auger 10 by operating the turning / undulation operation lever 22 is performed. Move on to S4.

  In step S4, an alarm is output to the alarm buzzer 42. That is, since the alarm buzzer 42 notifies while operating the turning / undulation control lever 22 in a state where the turning restriction of the grain discharge auger 10 is released, the connector portion of the auger turning position detection sensor (potentiometer) 37 Never forget to restore the installation.

  The above-described auger turning restriction release control is such that when the detection signal by the potentiometer 37 that is the turning position detecting means of the grain discharge auger 10 is determined to be abnormal, the restriction of the turning operation of the grain discharge auger 10 can be released. By constructing, when the emergency stop switch breaks down, such as an emergency stop switch (hand push button switch), which is a manual operation type release means that releases the entry prohibition control of the conventional grain discharge auger Since it is possible to avoid the inconvenience that the prohibition control cancel signal cannot be output to the control unit, it is effective as a canceling means that allows the grain discharge auger 10 to enter the turning restriction area of the grain discharge auger 10. (E.g., continuity retention and handleability) is improved, and since existing equipment parts are used, there is an advantage that it can be constructed at low cost.

On the other hand, when a failure occurs in the auger turning position detection sensor (potentiometer) 37 and the detection signal is determined to be abnormal (step S1), the turning restriction of the grain discharge auger 10 is released in step S2, Next, in step S3, the turning / undulation control lever 22 is operated.
If an attempt is made to swivel and raise / lower the grain discharge auger 10 by operating the button, an alarm is output to the alarm buzzer 42 at step S4, so that the operator erroneously turns and undulates the grain discharge auger 10. By performing the above, it is possible to avoid the problem that the grain discharge auger 10 and peripheral devices collide and are damaged.

  Also applicable to storage control devices such as granule and the like, which has a storage tank for storing powder particles and the like, and a discharge auger having a turning mechanism in the storage tank, and a turning control provided with a turning restriction region of the discharge auger it can.

The side view of a combine. FIG. The top view which shows the turning range of a grain discharge auger. The perspective view which shows the operating device of a grain discharge auger. The block diagram which shows the input / output of a control part. The flowchart which shows auger turning regulation cancellation | release control. The side view which shows the base end part of a grain discharge auger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Grain discharge auger 21 Auger operation means 31 Auger control means 37 Auger turning position detection means

Claims (1)

A grain discharge auger (10) capable of moving up and down and turning with respect to the machine body, an auger operating means (21) for moving the grain discharge auger (10) up and down and turning, and a predetermined grain discharge auger (10) In the combine provided with the auger control means (31) for restricting the turning operation in the up-and-down range, the turning position of the grain discharge auger (10) relative to the machine body is detected by the auger turning position detecting means (37), and the auger turning When it is determined that the detection signal from the position detection means (37) is abnormal, the restriction of the turning operation of the grain discharge auger (10) by the auger control means (31) is released. Rotation control of the grain discharge auger in the combine.

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