JPS60218102A - Working machine - Google Patents

Abstract

PURPOSE:To improve operability and workability by holding the present state when manual operation is executed at a time of automatic control, and then restoring the operation to the automatic control. CONSTITUTION:A control device 80 of a working machine such as harvester is constituted of a CPU81, a RAM82, a ROM83, and input and output interfaces 84, 85. For instance, a detecting signal of the 2nd sensor 60 is inputted to an input port a1 through an A/D converter 61 and a switch circuit 86 is connected to an output port b1 to execute various control such as lighting of a light emitting diode 91. When the change of a vertical carrier device which may be supposed by the driving of a motor 73 does not coincide with the detected result of its sensor 78, the manual operation of an operation lever is decided and the automatic control of the vertical carrier device is inhibited for a prescribed period. When the state due to the manual operation exceeds an automatic control range, the state is restored to the automatic control range after the passage of a prescribed period and then the automatic control is restarted.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to working machines such as harvesters and threshing machines.

[Prior art]

For example, in threshing equipment that threshes harvested husks with a handling barrel and separates fine grains with a swinging sorter, the angle of the fins of the chaff sheave can be changed in recent years, and the threshing process is We aim to improve sorting accuracy by automatically adjusting the fin angle according to the amount. The fin angle can also be changed manually, but since manual operation usually takes priority, automatic adjustment is not performed after manual operation, and a special operation is required to return to automatic adjustment. It was necessary.

〔the purpose〕

The present invention has been made in view of the above circumstances, and its purpose is to maintain the manually operated state for a predetermined time and then return to automatic adjustment when manual operation is performed during automatic adjustment. To provide working machines with improved operability and workability.

〔composition〕

The present invention is designed to control a controlled member by manual adjustment or automatic adjustment based on a predetermined detection signal, and if the state of the controlled member at the time of automatic adjustment does not correspond to the control result by automatic adjustment, After the automatic adjustment of the controlled member is prohibited for a predetermined period of time, automatic adjustment is restored.

〔Example〕

The present invention will be described below based on drawings showing embodiments thereof.

FIG. 1 is an external perspective view of a harvester equipped with a threshing device according to the present invention. In the figure, reference numeral 3 denotes a threshing device mounted on the machine body on three sides of the running roller 1. It is located at the front of the machine body and is composed of a weeding rod 4, a cutting blade 2, a pulling device 7, etc. The husks cut by the reaping section K are sent to the threshing device 3 via upper and lower conveying devices (not shown), where they are threshed, and the threshed grains are sent to the paddy tank 5.

In addition, 9 in the figure is an operation column provided in front of the driver's seat 8;
10 is a vertical conveyance device, the terminal end of which faces the starting end of the feed chain 12 of the shell culm transfer device 11;
A shell culm sensor 6 is provided near this for detecting the feeding of the shell culm to the threshing device. The shell culm sensor 6 is not limited to this position, but may be placed on the side of the starting end of the shell culm transfer device 11 or within the conveyance path of the vertical conveyance device 10, etc., or in a harvester equipped with an automatic handling depth adjustment device. In the machine, the sensor may be used in common with a sensor provided for culm length detection. The husk culm transfer device 11 is composed of a feed chain 12 and a husk rod 13, and is provided along the handling opening of the threshing device 3.

FIG. 2 is a partially cutaway vertical sectional view of the threshing device 3.

The threshing device 3 has a handling cylinder 17 having a large number of handling teeth 16, 16, mounted in a handling chamber 15 formed in the upper part of the machine housing 14, and parallel to the axial direction of the handling cylinder 17. In addition to extending the handling port, a receiving net 18 is installed in the lower part of the handling chamber 15, and a swing sorting device 19 is installed in the lower part of the handling chamber 15, which is substantially parallel to the axial direction of the handling cylinder 17. It was established. Furthermore, a processing chamber 50 for reprocessing the second reduction product is provided at the upper right side of the handling barrel 17 (near the center of the machine), and inside this processing chamber 50, the handling barrel extends in the axial direction. A processing cylinder 51 having a large number of handling teeth 52, 52- is mounted on a shaft in the same direction as the axial direction of the processing cylinder 17.

The swinging sorting device 19 includes a swinging sorting board 20 extending in an inclined manner,
It is composed of a variable-angle chaff sheave 21 (to be described later) provided at the lower rear of the swinging sorting board 20, and a stroke rack 22 connected to the rear of the chaff sheave 21, which swings in conjunction with a drive source. Moving swinging arm 23.24
Accordingly, it is configured to swing in the axial direction of the handling cylinder 17.

Further, below the swing sorting device 19, there is a first grain collecting section (first) 2 consisting of a first grain plate 25 and a first screw 26.
7, and a second grain removal section (second port) 30 consisting of a second flow grain plate 28 and a second screw 29.
is formed.

Some of the grains that have fallen into the grain removal section 27 are removed from the screw 2.
6 to the paddy tank 5, and also to the second grain take-out section 30.
The grains that have fallen are blown up from the second screw 29 into the second thrower cylinder 48 by the blower 47, and are sent to the processing cylinder from the processing cylinder cover 53 protruding above the processing chamber 50 of the roof plate of the threshing device 3. 51 to be re-sorted. The second screw 29 is provided with a second rotation sensor 69 that detects the rotation speed of the screw 29, and the processing cylinder cover 53 is provided with a second rotation sensor 69 that detects the amount of reduced material returned to the processing cylinder. 60 are provided.

In the air passage '31, a grain sieve 32 is provided below the chaff sieve 21, and a winnowing device 33 is provided on the wind raising side of the air passage 31. Then, the airflow from the karate device 33 is rectified by the rectifier plates 34 and 35, and then passes through the air passage 31 and is discharged to the outside of the machine from a dust exhaust port (third port) 36 at the rear of the machine. There is.

A suction/discharge seat device 37 using an axial fan is provided at the rear upper part of the stroke rank 22, while the suction/discharge seat device 3
An upper suction cover 38 is disposed above the suction cover 38 and a lower suction cover 39 is disposed below the suction/discharge seat device 37.
is opened toward the dust exhaust port 36.

Above the upper suction cover 38, a fourth gutter 43 is provided that extends diagonally upward from both ends to form a fourth gutter 44, and the created grains taken out from the culm after threshing, that is, the waste straw, are drawn into the straw. - The rack 22 is configured to be returned upward.

FIG. 3 is a side sectional view of the vicinity of the fin angle changing operation lever shown together with a part of the chaff sheave. The chaff sheave 21 includes a large number of fins 21b extending in the left-right direction of the fuselage, which are arranged in parallel in the front-rear direction between the left and right frame members (not shown) extending in the front-rear direction of the fuselage among the rectangular frame members, and each upper part is arranged in parallel in the front-back direction. It is pivoted to the frame material. The lower part of each fin 21b extends in the front-rear direction.
They are respectively pivotally supported by adjustment levers 21c of the book, and the middle of the rotation shaft 21d is fixed to the front part of the adjustment levers 21c.

The rotation shaft 21d is pivotally supported at a position above the adjustment link 21c, and the front end of the tension spring 21e is locked to the upper part of the rotation shaft 21d. The other end of the tension spring 21e is locked in the opening in the threshing chamber. One end of a push-pull wire 21f is locked to the lower end of the rotation shaft 21d, and the other end of the push-pull wire 21f is connected to the base end of an operating lever 71 provided on the front surface of the threshing device 3 on the side of the driver's seat 8. It is pivotally supported by a rotating piece 72 attached to the section.

Therefore, by pulling the push-pull wire 21f, the lower part of the rotating rod 21d is rotated rearward, and the adjusting rod 21c is moved rearward, and the fin 21b is erected and the fin angle (fin 21b and adjusting rod 21c is The bow angle) γ becomes larger, and the gap between the fins 2Ib becomes larger.

On the other hand, when the push-pull wire 2]f is pressed, the rotation rod 2
The lower part of 1d is rotated forward, the adjustment link 21c is moved forward, the fins 21b are tilted, the fin angle γ becomes small, and the gap between the fins 21b becomes small.

The operating lever 71 is provided on the front right side of the threshing device 3, and can be operated by a worker seated in the driver's seat 8.゛An operation panel 70 is attached to the side of the operation lever 71 on the front side of the threshing device 3, and a frame 77 that is U-shaped in plan view and whose front part is open is attached to the rear surface of the operation panel 70. , an operating lever 71 is provided on the side of the frame 77.
is supported. The front part of the operating lever 71 passes through an elongated hole formed in the operating panel 70 and protrudes forward, and the lower part of a rectangular rotating piece 72 is fixed to the base end of the operating lever 71. One end of the push-pull wire 21f is locked.

A rotating shaft 75 is mounted vertically on the front part of the frame 77, and a feeding member 7 using a spiral is attached to the rotating shaft 75.
6 is fixed at both ends and an appropriate part in the middle. Further, a lower end portion of the rotating shaft 75 projects downward from the frame 77, and this projecting portion is inserted into the gear box 74. This gear box 74 is attached to a motor 73 with its output shaft at the front, and a worm gear transmits the driving force of the motor 73 to a rotating shaft 75 to rotate a feeding member 76. The aforementioned operation lever 71
is urged toward the rotating shaft 75 by an appropriate method (not shown), and is engaged with the rotor of the feed member 76.

Therefore, when the motor 73 is driven and the feeding member 76 rotates, the operating lever 71 is sent into the spiral of the feeding member 76 and moves in the vertical direction, and the operating lever 71 is engaged with the spiral of the feeding member 76. It is also possible to remove it and operate it manually. Operation lever 71 is manual or motor 7
When the push-pull wire 21f is rotated in the direction shown by the solid line (or broken line) in FIG.
is pulled (or pressed), the fins 21b stand up (or tilt), and the gap between the fins becomes larger (or smaller). A lever position detection sensor 78 using a potentiometer is provided at the base end pivot portion of the operation lever 71.
The sensor 78 outputs a voltage corresponding to the rotational position of the operating lever 71, and hence a voltage corresponding to the fin angle.

FIG. 4 is a circuit diagram of the control system of the device of the present invention.

In the figure, 80 is a control device using a microcomputer, CPII 81. RAM 82. ROM
83. Input interface 84. It consists of an output interface 85.

The detection signal of the second highest sensor 60 is converted into a digital signal by the A/D converter 61 and input to the input port a1 of the input interface 84.

In the input boat a2, the output of a lever position detection sensor 78 using a potentiometer is provided at the base end of the fin angle changing operation lever 71 of the chaff sheave 21 described above.
The signal is converted into a digital signal by a /D converter 62 and input.

A threshing switch 63 that is turned on when the threshing clutch is put into the connecting state is connected to the input boat a3, and when the threshing switch 63 is turned on, the input boat a3 becomes high level.

A reaping switch 64 that is turned on when the reaping latch is in the engaged state is connected to the input boat a4, and when the reaping switch 64 is turned on, the manual boat a becomes at a high level.

An automatic switch 65 that is turned on when the fin angle of the chaff sheave should be automatically adjusted is connected to the input capo-1-a, and when the automatic switch 65 is turned on, the input port a5 becomes high level.

A grain changeover switch 66 is connected to the input port a6, which is operated to switch depending on whether the grain to be threshed is rice or wheat. The switch 66 is turned on in order to reach the high level.

At the input port a7, there is a dry/wet switch 67 which is operated depending on whether the grain to be threshed is soft wood or wet wood.
Is it connected? f1. ．． In the case of +4, the switch 67 is turned on to set the input port a7 to a high level.

The input boat a8 is connected to the culm sensor 6 that detects the conveyance of the culm to the threshing device, and when the sensor 6 detects the conveyance of the culm, the input capo ae goes to a high level. .

The output of a switch circuit 68 is given to the input capo 1-89, and the switch circuit 68 is connected to the second rotation sensor 69.
When the second rotation sensor 69 detects the low rotation of the second screw 29 and the output of the sensor 69 becomes high level, the switch circuit 68 is turned on and the input port a9 becomes high level. . The output of the switch circuit 68 is a light emitting diode (LED) whose one end is grounded to the body.
)99 is given.

A switch circuit 86 is connected to the output port b1 of the output interface 85, and when the switch circuit 86 is turned on, the light emitting diode 9 lights up. The output port b
1 outputs a high level signal when the control device 80 is not operating normally, and the light emitting diode 91 is lit by the high level signal.

A switch circuit 87 is connected to the output port 1-b2, and when the switch circuit 87 is turned on, the light emitting diode 9 is turned on.
2 lights up. The output port b2 outputs a high-level signal when each sensor or switch is not operating normally, and the light-emitting diode 92 is lit by the high-level signal.

A switch circuit 88 is connected to the output port b3, and an automatic lamp 93 is turned on when the switch circuit 8B is turned on. The output port b3 outputs a high level signal when the automatic switch 65 for automatically adjusting the fin angle of the chaff sheave 21 is turned on, and the automatic lamp 93 is turned on by the high level signal.

A switch circuit 89 is connected to the output port b, and when the switch circuit 89 is turned on, the excitation coil 94G of the electromagnetic relay 94 is excited. This electromagnetic relay 94 has a normally open contact 94a and a normally closed contact 94b that are interlocked, and the normally open contact 94a is connected to the power supply line and the fin 2 of the chaff sheave 21.
11) is interposed between one end of the motor 73 for driving the operating lever 71 (the terminal that becomes high voltage when the motor 73 is reversed) and the normally closed contact 94b.
is interposed between the same terminal of the motor 73 and body ground. The output port 11° outputs a high level signal when the fin 21b of the chaff sheave 21 is tilted (2) (when the fin angle is made small).

A switch circuit 90 is connected to the output port b5, and when the switch circuit 90 is turned on, an excitation coil 95G of the electromagnetic relay 95 is excited. This electromagnetic relay 95 has a normally open contact 95a and a normally closed contact 95b that are interlocked, and the normally open contact 95a connects the power supply line to the other end of the motor 73 (the terminal that becomes high voltage when the motor 73 rotates forward). A normally open contact 94b is interposed between the same terminal of the motor 73 and body ground. The output port b5
When the fins 21b of the chaff sheave 21 are raised (
outputs a high-level signal when increasing the fin angle).

Therefore, when output port b becomes high level, electromagnetic relay 9
No. 4 excitation coil 94G is excited, and its normally open contact 94a
is closed, the motor 73 rotates in reverse, and when the output port b5 becomes high level, the excitation coil 95C of the electromagnetic relay 95 is excited, its normally open contact 95a is closed, and the motor 73 is driven in normal rotation.

A switch circuit 96 is connected to the output capo-1-b6, and when the switch circuit 96 is turned on, an alarm buzzer 97 and a light emitting diode 98 light up. As will be described later, the output boat b outputs a high level signal when the amount of secondary reduction product does not fall within a predetermined range even if the fin angle of the chaff sieve 21 reaches the upper or lower limit of the control range in automatic adjustment. do.

The operation of the harvester having such a configuration will be explained.

When manually adjusting the fin angle, turn off the automatic switch 65 and operate the operating lever 71 to adjust the feed member 76.
When the lever 71 is rotated, the push-pull wire 21f is pulled or pressed, and the fin 21b
stands up or leans down, and the fin angle becomes larger or smaller.

When harvesting and threshing operations are carried out under such conditions, the husk cut by the reaping section is fed to the grain racks 10 and 16 of the threshing device 3. The shell culm inherited by the shell culm transfer device 11 has its tip side passed through the handling port of the threshing device 3 into the handling chamber 15.
The handling teeth 1.6 of the handling cylinder 17 are inserted into the interior and driven to rotate.
．． 16..., and the treated grated material such as the threshed grains passes through the receiving net 18 and falls onto the swinging sorting device 19, and the specific gravity sorting is performed by the swinging of the rack M19. I, the fins 21b, 21b of the chaff sieve 21...
- The fine grains etc. that have passed through the gap fall into the first extraction section 27, and the second reduced product and third reduced product are blown onto the straw rack 22 by the wind generated by the windshield device 33, and are removed by the prevention cloth. 42, it falls onto the straw rack 22 and is re-sorted while being massaged by the swinging action of the straw rack 22, to remove second-reduced grains such as ear cut grains and branch stalks (-1 grains). The straw particles fall into the second grain removal section 30, are blown up from the second screw 29 into the second thrower tube 48 by the blower 47, and are re-sorted by the processing cylinder 51. Relatively large straw waste etc. The blown wind transports it backwards while being interfered with by the prevention sheet 42, and it is discharged outside the machine from the dust exhaust port 36, while relatively lightweight debris is removed from the suction/discharge seat device 3.
The air is sucked in through the suction port 40 of No. 7 and discharged to the outside of the machine through the exhaust port 41.

Next, automatic fin angle adjustment in the chaff sheave 21 will be explained based on the flowcharts of FIGS. 5, 6, and 7. First, when the key switch 5 is turned on, the alarm counter BZ indicating that the buzzer 97 has sounded, the cutting flag K indicating that the cutting operation is in progress, and the cutting start flag D indicating that it is time to start cutting are all reset (= 0), and further set each condition in accordance with the grain to be threshed.

That is, whether the grain is rice or wheat is set with the grain switch 6, whether it is dry grain or wet material is set with the dry/wet changeover switch 67, and then the grain is threshed. The upper limit value α and the lower limit value β of the appropriate range of the second reduction amount are determined depending on whether the work is performed at high speed or low speed, and the chaff sieve 2I
The upper limit value and lower limit value S of the control range during automatic adjustment of the angle of the fin 21b in , and the chaff angle M that should be set at the start of mowing are respectively set. This angle M is approximately the center value of the control range of the fin angle during automatic adjustment.

Now, the control device 80 determines whether or not the reaping work has started based on the reaping start flag D, and if the reaping start flag D is in the reset state (D-0), it is assumed that the reaping work has not started yet. , fin angle 6 is stored as the fin setting angle M at the start of mowing.

In such a state, when the automatic switch 65' is turned on to automatically adjust the fin angle, and the threshing switch 63 is turned on with the threshing clutch in the standby state to drive the threshing device 3, the control device 80 first adjusts the fin angle. The motor 73 is continuously driven in normal rotation so that the fin angle reaches the lower limit value S, and the fin angle is judged from the detection result p of the lever position detection sensor 78, and when the fin angle reaches the lower limit value S, the drive of the motor 73 is stopped. .

When the machine is run in this state and reaping work and threshing work are started, the harvested husk is conveyed to the threshing device 3, the husk sensor 6 is turned on, the automatic lamp 93 is turned on, and the automatic adjustment is performed. inform what can be done. When the reaping switch 64 with the reaping latch in the engaged state is on, and the reaping flag K is in the reset state (K
' = 0), during the predetermined time T1, sorting is performed with the fin angle set to the minimum high sorting accuracy state, and after the predetermined time TI has elapsed, the fin angle is changed to the state at the start of mowing described above.
The motor 73 is continuously driven in the reverse direction in order to obtain the set angle M that is equal to or less than Q. When it is detected that the fin angle has reached the set angle M based on the detection value p of the lever position detection sensor 78, the drive of the motor 73 is stopped, and the reaping flag K is set to the cent state (not indicating that reaping work has started). K-1).

This is because when the threshing operation starts, the amount of threshing is not constant, so the amount of the second reduced material is unstable, and the detection result of the second sensor 60 is also extremely unstable. Automatically adjusting the fin angle based on
Since the sorting accuracy will be significantly reduced, after the husk is sent,
For the predetermined time T1, sorting is performed in the lowest state S of the control range in automatic adjustment of the fin angle, that is, in a state with the highest sorting accuracy, and the fin angle is immediately set to the angle M after the elapse of the predetermined time T1 when the threshing amount is stable. After achieving such a state, the fin 21b is intermittently driven by controlling the fin angle based on the state of the fin angle M in accordance with the second reduction amount based on the detection result of the second sensor 60. I try to do it.

On the other hand, in a non-working state where either the automatic switch 65 or the threshing switch 63 is off or in a state where the fin angle is manually adjusted, the automatic lamp 93 is turned off.
If the conveyance culm is not detected, the automatic lamp 93 is blinked, and the motor 73 is continuously driven to set the fin angle to the lower limit value S in the automatic adjustment, and the fin 21b is kept in a high sorting accuracy state where it is most tilted. The culm is in a state where it can be transported.

Next, the control of the fin angle based on the second reduction amount detected by the second sensor 60 will be explained based on the flowchart of FIG. First, check the alarm counter BZ to see if the buzzer 97 has already sounded, and if the alarm counter BZ is in the reset 1- state (BZ=0) and the buzzer 97 has not sounded yet, the lever position detection The fin angle p corresponding to the lever position detected by the sensor 78 is read as the stored value P. Then, the amount of the second reduced material detected by the second sensor 60 is the upper limit α that allows proper sorting by the chaff sieve 21.
or above (or 9 is below the lower limit β), the fin angle is below the upper limit of the control range during automatic adjustment (or below the lower limit S).
The detection value p of the lever position detection sensor 78 determines whether
If the value is below the upper limit (or above the lower limit S), the motor 73 is rotated in reverse (or forward) for a short predetermined period of time to increase (or decrease) the fin angle by a predetermined amount Δp. 2Ib The gap is made large (or small) to increase (or decrease) the amount of grains etc. passing through the gap,
The amount of grains fed to the second take-out section 30 is reduced (or increased).

Change in fin angle Δp due to short-time driving of the motor 73
If the amount of the secondary reduction product does not fall within the predetermined range (α-β) even if The motor 73 is driven intermittently until then.

In this case, by driving the motor 73 for a predetermined time, the fin angle changes by Δp, and if the secondary reduction amount is within the predetermined range, the motor 73 is not driven and the fin angle is not changed, but the lever position detection sensor 78 between 0 and 0 The output value p is the motor 73
The expected fin angle (P+Δp or P−Δp
) do not match (■, ■) (Corresponding parts in the flowcharts of FIGS. 6 and 7 are shown with the same reference numerals.

If the fin angle is changing even though the motor 73 is not being driven (■), it is assumed that the fin angle has been changed by manually operating the operating lever 71, as shown in FIG. A predetermined manual holding control shown in FIG.

FIG. 7 is a flowchart of manual holding control, and when it is determined that the operating lever 71 has been manually operated, the operating amount is first determined by the detection value p of the lever position detection sensor 78.
Check whether the fin angle exceeds the fin angle control range (S-L) during automatic adjustment (■,
■). Then, the fin angle is within the range where it can be automatically adjusted (S≦
p≦L), the state of the manually operated fin angle is maintained for a predetermined period of time T4 in order to give priority to the manual operation state (■), and then the mowing start flag D is set to the cent state (D
= 1), and also sets the alarm counter BZ to the reset state (B
Z=0) and resume automatic adjustment based on the amount of the second reduced product (■).

On the other hand, if the fin angle p is smaller than the lower limit S (or larger than the upper limit) of the control range in automatic adjustment due to the operation of the operating lever 71, the predetermined time T, maintain this manually operated fin angle (■), and then rotate the motor 73 in reverse (or forward) for a short predetermined period of time to increase (or decrease) the fin angle.
If the fin angle is not within the specified range,
Furthermore, by increasing (or decreasing) the fin angle, and eventually increasing (or decreasing) the fin angle intermittently, the fin angle is brought within the control range in automatic adjustment, and in this state, the mowing start flag D is set to The state (D-1) and the alarm counter BZ are reset to the 1-state (BZ=0), and the automatic adjustment based on the amount of the second reduction product is restarted (■).

(The following is a margin) The predetermined time T5 in this case is set longer than the predetermined time T when the change in the fin angle by manual operation described above is within the control range of automatic adjustment.

In some cases, T 4 - T s or T4 >7'
It may be set to 5.

Such a configuration is designed to respond to temporary changes in the amount of harvested husk culms and the amount of secondary reduction material by giving priority to the manual operation and maintaining that state for a predetermined period of time. This is intended to improve workability by dealing with changes and then returning to automatic adjustment based on the amount of secondary reduction product.

In addition, if the fin angle is outside the automatic adjustment control range due to manual operation, the fin angle is brought within the automatic adjustment control range after a predetermined period of time has passed, and then the automatic adjustment is resumed. This prevents the vehicle from running out of control.

On the other hand, when the amount of secondary reduced product is greater than or equal to the upper limit value α (or less than or equal to the lower limit value β) and the fin angle is greater than or equal to the upper limit value (or less than or equal to the lower limit value S), the 3 alarm counter BZ The duration of the state is measured, and the count is incremented by 1 at regular intervals. Chaff sieve 2
1 performs sorting in such a state, but if the amount of the second reduced product does not fall within the appropriate range within a predetermined time until the count content of the alarm counter BZ reaches T2, the buzzer 97 will sound and a light will be emitted. Diode 98 is turned on. The alarm is canceled when the automatic switch 65 is turned off or when the alarm conditions are no longer satisfied.

During such work, the number 2 rotation sensor 69 detects that the number of items falling into the number 2 take-out section 30 has increased, the number 2 screw 29 has become overloaded, and its rotation speed has fallen below a predetermined value. If the fin angle is detected, automatic adjustment of the fin angle of the chaff sheave 21 is prohibited, the automatic lamp 93 is turned off, and the motor 73 is continuously reversed so that the fin angle is at the upper limit of the control range in automatic adjustment. By increasing the amount of grains passing through the gap and increasing the amount of grains that fall into the first grain removal section 27, the amount of second grains that fall into the second grain removal section 30 is decreased. In this case, the fin angle p at the time when the second screw 4-29 becomes overloaded is stored as a memory value P, and when the overload is eliminated, the fin angle is immediately set to that value p, and the fin angle is set to that value p. The fin angle is automatically adjusted depending on the condition.

- At the end of the reaping process, there is no transported culm and the culm sensor 6 is turned off, but at the end of such reaping work, the threshing amount is not constant, just like at the start of the work, and the second return Since the amount of material is also unstable, if the fin angle is controlled based on the amount of secondary reduction material, the sorting accuracy will be significantly degraded. The fin angle p at the time when the culm sensor 6 is turned off is stored as a memory value P, and the fin angle p is stored for a predetermined period of time T.
After 3, the motor 73 is continuously driven so that the fin angle of the chaff sheave 21 becomes the lower limit value S of the automatic adjustment control range,
Sorting is performed in a state where the fins are most inclined, that is, in a state with the highest accuracy.

At this time, the reaping flag is set to a recent state (K=O). Then, when the reaping work of the - stroke is finished, the turn is made to the next stroke, and the reaping work is started again, the culm is detected by the sensor 6, and the predetermined time '■゛1 when the grain flow rate is low is determined by the chaff sieve 21. Grain sorting can be performed in a high sorting accuracy state where the fin angle has reached the lower limit value S, but after the predetermined time T1 has elapsed, the fin angle is changed to 1. at the end of reaping. a
value, and in that state automatic adjustment of the fin angle based on the amount of the second reduction product is restarted.

Therefore, even when starting mowing in the -stroke, the sorting is performed in a high sorting accuracy state at first, and after a predetermined period of time, the fin angle is set to the final fin angle during automatic fin angle adjustment in the previous stroke. The fin angle is continuously driven, and automatic adjustment is restarted in this state.

On the other hand, automatic fin angle adjustment will be described when a harvester having such a configuration performs a threshing operation without performing a reaping operation.

In order to automatically adjust the fin angle, the automatic switch 65 is turned on, and the threshing clutch is engaged, and the threshing switch 63 is turned on.
When turned on, the fin angle of the chaff sieve 21 becomes small, as in the above-mentioned harvesting operation, resulting in the highest sorting accuracy. When the shell culm to be threshed is inserted into the handling chamber 15 in such a state, the shell culm sensor 6 is turned on. In this case, since the cutting threshing is done by hand, the reaping latch is in the disengaged state and the reaping switch 64 is in the off state, so the fin angle is automatically adjusted immediately without setting the fin angle to the standard state. The automatic adjustment is started at a fin angle state with high selection accuracy, and the automatic adjustment is performed centering around this fin angle state.

The subsequent automatic adjustment is similar to the automatic adjustment during the harvesting operation described above, and the fin 21 is
b is driven intermittently.

In the above embodiment, the fin angle was automatically adjusted based on the amount of the second reduction product, but instead of this, a configuration was adopted in which the fin angle was automatically adjusted based on the first flow rate, the third flow rate, and the culm supply amount. You can also use it as

Further, in the above-described embodiment, the fin angle of the chaff sheave in the threshing device is changed and adjusted, but the present invention is not limited to this. For example, when changing the tilt angle of the vertical conveyance device in a harvester to adjust the handling depth. The present invention can also be applied to FIG. 8 is a schematic diagram showing the implementation state in the seventh case. In the figure, reference numeral 17 indicates a handling cylinder, reference numeral 11 indicates a shell culm transfer device, and reference numeral 10 indicates a vertical conveyance device. The terminal end of the vertical conveyance device 10 is rotatably supported, and the operating lever 71' is fixed to the starting end.
The operating lever 71' is pressed by a suitable biasing member so as to be able to engage with a spiral feeding member 76 similar to the previous embodiment. The driving force of the motor 73 is transmitted to the feed member 76 via a gear box 74 and a rotating shaft 75. Accordingly, the operation lever 71' is moved by the rotation of the motor 73, and the terminal end of the vertical conveying device 10 approaches or separates from the shell culm pinning and transferring device 11, and the handling depth of the shell culm to be transported is changed. Also, move the operation lever 71' to the feed section + A7.
The handling depth can be changed by manually operating it by removing the connection with 6. The motor 73 is controlled by a grain length sensor (not shown) that is provided in front of the handling room and detects the length of the culm being transported. A vertical conveyance device position detecting sensor 78' using a potentiometer for detecting the rotational state of the vertical conveyance device 10 is provided at the end of the vertical general conveyance device 10.

8 In such a configuration, in the automatic adjustment control of the handling depth, the motor 73 is driven based on the detection result of the culm length sensor, and the handling depth is kept constant.
If the expected change in the vertical conveying device 10 due to the drive of step 3 does not match the actual state of the vertical conveying device 10 based on the detection result of the vertical conveying device position sensor 78', the operating lever 7
1' is manually operated, the automatic adjustment of the vertical conveyance device 10 is prohibited for a predetermined period of time, and if the state of the vertical conveyance device 10 due to manual operation exceeds the control range of automatic adjustment, the predetermined period of time has elapsed. After that, the vertical conveyance device 10 is returned to within the control range, after which the automatic adjustment is restarted, and this configuration is similar to the previous embodiment.

〔effect〕

According to the present invention, manual operation is reliably detected and this state is maintained for a predetermined period of time after manual operation, so manual operation is given priority and automatic adjustment is returned immediately after manual operation. Therefore, hunting when restarting automatic adjustment is prevented, and furthermore, excellent effects such as no need for special operation to return to automatic adjustment after manual operation are achieved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an external perspective view of a harvester equipped with the device of the present invention, FIG. 2 is a vertical sectional view of the device of the present invention, and FIG. 3 is a main part of the chaff sieve. and a side view of the vicinity of the operating lever, FIG. 4 is an electronic circuit diagram of the main part of the device of the present invention, FIG. 5, FIG. 6, and FIG. 7 are flow charts for explaining the operation of the device of the present invention, and FIG. FIG. 3 is a schematic diagram showing another embodiment of the invention. 3... Threshing device 6... Hull culm senna 11... Hull culm clamping transfer device ]7... Handling cylinder 21... Chaff sieve 21b... Fin 27... First grain removal Part 29... No. 2 screw 30... No. 2 grain removal section 50... Processing chamber 51... Processing cylinder 60... No. 2 sensor 63... Threshing switch 64... Reaping switch 65. ...Automatic switch 69...Second rotation sensor 71...Operation lever 73...Motor 76
...Feeding member 78...Lever position detection sensor 80.
...Control device 97...Buzzer patent Applicant: Yanmar Agricultural Machinery Co., Ltd. Agent Patent attorney: Noboru Kono

Claims (1)

[Claims] 1. The controlled member is controlled by manual adjustment or automatic adjustment based on a predetermined detection signal (None, if the state of the controlled member at the time of automatic adjustment does not correspond to the control result by automatic adjustment, the controlled member is 1. A working machine characterized in that automatic adjustment of a member is restored after prohibiting automatic adjustment for a predetermined period of time.