JPS60218101A - Working machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 The sorting accuracy is improved by automatically adjusting the fin angle within a predetermined range depending on the amount. It is also possible to change the fin angle by manual operation, but since energized manual operation has priority, automatic adjustment will not be performed after manual operation, and a special operation is required to return to automatic adjustment. It was necessary.

Further, even if the fin angle is returned to automatic adjustment when it is out of a predetermined range due to manual operation, automatic adjustment is not performed, and normal control by automatic adjustment cannot be performed.

〔the purpose〕

The present invention has been made in view of the above circumstances, and its purpose is to control the state to a predetermined state when a controlled member is manually operated outside the control range of the automatic adjustment during automatic adjustment. The object of the present invention is to provide a working machine that improves operability 2 by holding the controlled member for a certain period of time and then returning the controlled member to tM in the automatic adjustment by setting it within the control range of the automatic adjustment.

〔composition〕

The present invention aims to control a controlled member by manual adjustment and automatic adjustment based on a predetermined detection signal over a predetermined range, and the state of the controlled member during automatic adjustment corresponds to the control result by the automatic adjustment. If it is outside the range, automatic adjustment of the controlled member is prohibited for a predetermined period of time, and then the controlled member is brought within the predetermined range and automatic adjustment is resumed.

〔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, it is a threshing device mounted on the machine body above the roller l that runs three times, and 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, which is
The grains after threshing are sent to the paddy tank 5.
will be sent to

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 end of which faces the starting end of the foot chain 12 of the shell culm transfer device II,
A shell culm sensor 6 is provided near this to detect 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 pinning transfer device 11, or within the conveyance path of the vertical conveyance device 10, etc. Also, the shell culm sensor 6 may be provided with an automatic handling depth adjustment device. In the harvester, it may be configured so that it is shared with a sensor installed for detecting culm length. The husk culm transfer device 11 is composed of a fee chain 12 and a husk culm 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. The set number is also a thing. Furthermore, the handling cylinder 17
A processing chamber 50 for reprocessing the second reduction product is provided at the upper right side (near the center of the machine), and the axial direction of the processing chamber 50 is aligned with the axis of the handling barrel 17. A processing cylinder 5I having a large number of handling teeth 52, 52, . . . in the same direction as the longitudinal direction is mounted on a shaft.

a swinging sorting device 19; 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 take-out part (second [1) 30] consisting of a second flow grain plate 28 and a second screw 29.
1 is formed.

The grains that have fallen into the first grain removal section 27 are transferred to the second 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 tube 48 by the blower 47, and then processed from the processing trunk cover 53 protruding from one side of the roof board processing chamber 50 of the threshing device 3. They are dropped onto a barrel 51 and re-sorted. The second screw 29 is equipped with a second rotation sensor 69 that detects the number of rotations of the screw 29.
Further, the processing cylinder cover 53 is provided with a second sensor 60 for detecting the amount of the second reduction substance returned to the processing cylinder.

In the air passage 31, a drain sheave 32 is provided below the chaff sheave 21, and a drooping 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 rectifying plates 34 and 35, and then passes through the air passage 31 and is discharged to the outside of the machine from the dust exhaust port (third port) 36 at the rear of the machine. There is.

A dust suction/exhaust device 37 using an axial fan is provided at the rear and upper part of the Nutro roller sock 22, while the dust suction/exhaust device 3
An upper suction cover 38 is disposed above the 7, and a lower suction cover 39 is disposed below the dust suction/discharge device 37.
is opened toward the dust exhaust port 36.

Above the upper suction cover 38, a fourth gutter 43 is provided which extends diagonally upward from both ends to form a fourth gutter 44, which collects the prickly grains taken out from the culm after threshing, that is, from the waste straw. The straw rank 22 is configured to be reduced to one side.

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 at the second portion thereof. 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 2.1f is attached to 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 base end of.

Therefore, by pulling the pull wire 21f,
The lower part of the rotating rod 21d is rotated backward and becomes the adjusting rod 21c.
moves rearward, the fins 21b stand up, the fin angle (the angle between the fins 21b and the adjustment rod 21c) γ increases, and the gap between the fins 2Ib increases.

On the other hand, when the Psoshuffle Wire 1-21f is pressed, the lower part of the rotation rod 21d is rotated forward, the adjustment rod 21c is moved forward, the fins 21b are tilted, the fin angle γ becomes small, and the gap between the fins 2Ib is becomes smaller.

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 having an opening in plan view is attached to the rear surface of the operation panel 70. An operating lever 71 is pivotally supported on the side surface of the frame 77. The front part of the operating lever 71 projects forward through a long hole formed in the operating panel 70, 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 in the front, and the driving force of the motor 73 is transmitted to a rotating shaft 75 by a worm gear to rotate a feeding member 76. The aforementioned operation lever 71
is pressed toward the rotating shaft 75 by an appropriate method (not shown), and is engaged between the spirals of the feed member 76.

Therefore, when the motor 73 is driven and the feed member 76 rotates, the operation lever 71 is moved to the right direction of the feed member 76! It is sent to l'Jl' rotation and moves in the vertical direction, and the operation lever 7
I can also be manually operated by disengaging the feed member 76 from the spiral. When the operating lever 71 is rotated manually or by reverse rotation (or forward rotation) of the motor 73 in the direction shown by the solid line (or broken line) in FIG. 3, the push-pull wire 21f is pulled (or pressed) and the fin 21b is As it stands up (or leans down), 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 operating lever 71, and a voltage corresponding to the rotational position of the operating lever 71, and thus a voltage corresponding to the fin angle, is detected from the sensor 78. Output.

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. l? OM
83. Input interface 84. It consists of an output interface 85.

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

The input port a2 is provided at the base end of the fin angle changing operation lever 71 of the chaff sheave 21, and receives the output of a lever position detection sensor 78 using a potentiometer.
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 placed in the transfer state is connected to the input port a3, and when the threshing switch 63 is turned on, the input port a3 becomes high level.

A reaping switch 64 that is turned on when the reaping latch is placed in the connecting state is connected to the input port a4, and when the reaping switch 64 is turned on, the input port a+ becomes high level.

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

In the input capos 1 to a, there are grain changeover switches 66 which are operated depending on whether the grain to be threshed is rice or wheat.
is connected, and in the case of wheat, the switch 66 is turned on to set the input port a to a high level.

A7 is a dry/wet selector switch 6 which is operated depending on whether the grain to be threshed is dry or wet.
7 is connected, and in the case of wet material, the switch 67 is turned on to set the input port a7 to a high level.

A culm sensor 6 that detects the conveyance of the husk to the threshing device is connected to the input port 1-as, and when the sensor 6 detects the conveyance of the husk, the input boat a8 goes to a high level. Become.

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

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 91 lights up. The output capo 11g 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 b2, and when the switch circuit 87 is turned on, the light emitting diode 92 is turned on.
lights up. The output capo-1-b2 outputs a high-level signal when each sensor or switch is not operating normally, and the light-emitting diode 92 is turned on by the high-level signal.

A switch circuit 88 is connected to the output port b3, and when the switch circuit 88 is turned on, the automatic lamp 93 is turned on. The output capo 1-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 94C of the electromagnetic relay 294 is excited.
4 has an interlocking normally open contact 94a and a normally closed contact 94b, and the normally open contact 94a is connected to the power supply line and the chaff sheave 21.
The operating lever 71 for tilting and raising the fin 21b is interposed between one end of the motor 73 (a terminal that becomes high voltage when the motor 73 is reversed), and the normally closed contact 94b is connected to the motor 73. It is interposed between the same terminal and body ground. The output port b.

When the fins 21b of the chaff sheave 21 are tilted (
outputs a high-level signal □ when reducing the fin angle).

A switch circuit 90 is connected to the output port b, 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
outputs a high level signal when raising the 74-in 21b of the chaff sheave 21 (when increasing the fin angle).

Therefore, when output port b becomes high level, electromagnetic relay 9
No. 4 excitation coil 94C 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 port b6, and when the switch circuit 96 is turned on, an alarm buzzer 97 and a light emitting diode 98 light up. As described later, the output port b6 outputs a high level signal when the second reduction amount does not fall within a predetermined range even if the fin angle of the chaff sheave 2I reaches the upper or lower limit of the control range in automatic adjustment. .

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
is raised or lowered, and the fin angle becomes larger or smaller.

When harvesting and threshing work is performed in such a state, the husk cut by the reaping section is transferred to the husk culm transfer device 11 of the threshing device 3.
will be sent to. The husk culm inherited by the husk culm transfer device 11 is inserted into the handling chamber 15 through the handling opening of the threshing device 3 with its tip side, and the handling tooth 16.16 of the handling barrel 17 which is being driven to rotate
..., and the threshed grains and other grated materials pass through the receiving net 18 and fall onto the swinging sorting device 19, and are subjected to specific gravity sorting by the swinging of the device 19. , the fins 21b of the chaff sieve 21, 21b... The fine grains, etc., which are caught in the gaps between them, fall first to the extraction section 27,
The second reduced product and the third reduced product are blown onto the straw rack 22 by the wind generated by the windshield device 33, hit the prevention cloth 42, fall onto the straw rack, and are then blown onto the straw rack 22.
Re-sorting is performed while being loosened by the shaking action of No. 2, and the No. 2 reduced products such as ear cut grains and grains with stalks attached fall to the No. 2 grain removal section 30 and are passed from the No. 2 screw 29 to the blower 47.
The liquid is blown up into the second thrower cylinder 48 and re-sorted in the processing cylinder 51. Relatively large pieces of straw, etc., are transported to the rear by the wind sent from the winnowing device 33 while being interfered with by the prevention sheath 1-42, and are discharged outside the machine from the dust exhaust port 36, while relatively lightweight debris etc. is sucked through the suction port 40 of the dust suction/exhaust device 37 and discharged to the outside of the machine through the exhaust port 41.

Next, automatic adjustment of the fin angle in the chaff sheave 21 will be explained based on the flowcharts of FIGS. 5, 6, and 7. First, when the key switch 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 (-〇 ), and each condition is set according to the grain to be threshed.

That is, whether the grain is rice or wheat is set with the grain selection switch 66, whether it is rolled or wetted material is set with the dry/wet selection switch 7, and then the grain is threshed. Depending on whether the work is performed at high speed or low speed, the upper limit α and lower limit β of the appropriate range of the secondary reduction amount, and the upper limit of the control range when automatically adjusting the angle of the fin 21b in the chaff sheave 21. value, the same lower limit value S, and the chaff angle M that should be set at the start of mowing.
Set them respectively. 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. , the stored value P of the fin angle 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 lower limit value S is reached, and the fin angle is determined based on the detection result p of the lever position detection sensor 78, and when the lower limit value S is reached, the drive of the motor 73 is stopped.

When the machine is running in this state and the reaping work Q and the threshing work are started, the harvested culm is conveyed to the threshing device 3, the culm sensor 6 is turned on, and the automatic lamp 93 is turned on. Notify that automatic adjustment can be performed. The reaping switch 64 with the reaping latch in the engaged state
is on and the pillar and reaping flag K is in the reset state (K-0), the fin angle is set to the smallest and the high sorting accuracy state is selected for the predetermined time T1, and the predetermined time T, After waiting for the time to elapse, the motor 73 is continuously driven in the reverse direction to bring the fin angle back to the set angle M at the start of mowing. When the lever position detection sensor 7F detects that the fin angle has reached the set angle M based on the detection value p of the lever position detection sensor 7F, the motor 73 is stopped and the reaping flag K is set to state (K-1)
shall be.

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. Words that automatically adjust the fin angle based on the
Since the sorting accuracy will be significantly reduced, after the culm is fed lJu, for a predetermined time T, the fin angle is sorted in the lowest state S of the control range in automatic adjustment, that is, in the state with the highest sorting precision. After a predetermined time period of 1'' has passed during which the threshing amount has stabilized, the fin angle is immediately set to the set angle M, and after achieving this state, the fin angle is controlled centering on the state of this fin angle M. This is done by intermittently driving the fins 2]b in correspondence with the second reducing portion based on the detection results.

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 of the automatic δ1111 node.
b is set to be the most tilted, high sorting accuracy state, and the culm can be transported.

Next, the control of the fin angle based on the amount of secondary reduction detected by the secondary 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 force rough BZ is in the reset state 1@ (BZ = 0) and the buzzer 97 has not sounded yet, the lever position The fin angle p corresponding to the lever position detected by the detection sensor 78 is read as the stored value P. Then, the amount of the second reduced material detected by the second sensor 60 allows proper sorting to be performed in the chaff sieve 21.
If the value is greater than or equal to the second limit value α (or less than the lower limit value β),
Whether the fin angle is the upper limit LJ2n (or lower limit S or lower) of the control range during automatic adjustment is determined from the detection value p of the lever position detection sensor 78, and the upper limit is 12 or lower (or lower limit S or higher). In the case of
or small), the amount of grains etc. passing through the gap is increased (or decreased), and the amount of grains to the second take-out section 30 is decreased (
or increase).

If the amount of secondary reduction product does not fall within the predetermined range (α-β) even with a change in fin angle of 0 Δp due to short-time driving of the motor 73, the motor 73 is driven for a short time again and the fin angle is changed to Δp again. The motor 73 is driven intermittently until the amount of the second reduced product falls within a predetermined range.

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 The detected value p of 7B is the motor 73
If the fin angle does not match the expected fin angle (P+Δp or P-Δp) from the drive of the motor 73 despite the drive of the motor 73 (■, ■) If the fin angle is changed even though the motor 73 is not driven (■), the operating lever 71 is manually operated to change the fin angle. The predetermined manual holding control shown in FIG. 7 is performed as 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.
It is determined whether the fin angle exceeds the fin angle control range (S-I-) during automatic adjustment (■, ■). If the fin angle is within the range where 81M automatic knots can be made (S≦p≦L), the manually operated fin angle state is maintained for a predetermined period of time T+ in order to give priority to the manual operation state. After that, the mowing start flag D is set to the 1-state (D=1), and the alarm counter BZ is set to the reset state jW (BZ=0), and the automatic adjustment based on the second reduction amount is restarted (■).

On the other hand, if the fin angle p is smaller than the lower limit value S of the control range in automatic adjustment (or the upper limit value is larger) due to the operation of the operating lever 71, the predetermined time T5 is The state of the manually operated fin angle is maintained (■), and then the motor 73 is rotated 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. Set the state (D-1) and the alarm counter BZ to the reset state (BZ-〇), and restart the automatic adjustment based on the amount of the second reduction product (■).

The predetermined time T5 in this case is set longer than the predetermined time T when the above-mentioned change in the fin angle by manual operation is within the control range of automatic adjustment.

In some cases, T4 = T5 or T4 > T5 may be satisfied.

In this configuration, when a manual operation is performed in response to a temporary change in the amount of secondary reduction material in the harvested culm, priority is given to the manual operation and the state is maintained for a predetermined period of time, and the temporary change is This is intended to improve workability by allowing the operator to deal with the problem and then returning to automatic adjustment based on the amount of the second reduced product.

In addition, if the fin angle is outside the control range of automatic adjustment due to manual operation, the fin angle is brought within the control range of automatic adjustment after a predetermined period of time 34 has elapsed, and then the automatic adjustment is returned to automatic adjustment. This prevents runaway behavior when restarting.

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 alarm counter BZ is
The duration of this state is measured, and the count is incremented by 11'' at regular intervals. The chaff sieve 21 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 sounds and The light emitting 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 movement 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 between the fins 2Ib 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 No. 2 screw 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 state is restored. to automatically adjust the fin angle.

- 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 the second reduced material, the sorting accuracy will be significantly degraded, so automatic adjustment based on the amount of the second reduced material is prohibited, and the automatic lamp 93 is set to a blinking state. 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 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 with the fins in the most recent state, that is, in the state with the highest accuracy.

At this time, the reaping flag is set to a rectangular shape S<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 during the predetermined time T1 when the grain flow rate is low, the grain is sorted by the chaff sieve 21. can be carried out in a high sorting accuracy state where the fin angle has reached the lower limit value S, or after the elapse of a predetermined time T1, the fin angle can be set to the stored value at the end of reaping, and
In this state, automatic adjustment of the fin angle based on the amount of the second reduction product is restarted.

Therefore, even at the beginning of mowing in the -stroke, sorting is performed in a high sorting accuracy state at first, and after a predetermined period of time,
The fin angle is continuously driven so as to reach the final fin angle during automatic fin angle adjustment in the previous step, and automatic adjustment is resumed in this state.

On the other hand, automatic fin angle adjustment in the case where the harvesting operation 117 + 331 having such a configuration is performed without performing the reaping operation and instead performs the threshing operation will be explained.

The automatic switch 65 is turned on to automatically adjust the fin angle, and the threshing clutch is stopped 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 husk to be threshed is inserted into the handling chamber 15 in this state, the husk sensor 6 is turned on. In this case, because the threshing is done by hand, the reaping latch is in the disengaged state, and the reaping switch notch 64 is in the off state, so the fin angle can be automatically adjusted immediately without setting the fin angle to the standard state. Therefore, automatic adjustment is started at a fin angle state with high selection accuracy, and automatic adjustment is performed centering on 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 addition, in the above-mentioned embodiment, the fin angle was automatically adjusted based on the second reduction amount, but instead of this, the fin angle is automatically adjusted based on the first flow rate, the third flow rate, and the culm supply amount. It may also be a configuration.

Further, in the above embodiment, the fin angle of the chaff sheave in the threshing device is changed and adjusted, but the configuration is not limited to this. The present invention can also be applied to cases where the handling depth is adjusted by changing the inclination angle of the vertical conveyance device that goes down the machine.

FIG. 8 is a schematic diagram showing the implementation state in that case. In the figure, 17 is a handling cylinder, 11 is a shell culm transfer device, and ]O is a vertical conveyance device. [Vertical conveyance device] The terminal end of O is rotatably supported, and an operating lever 71' is fixed to its starting end, and this operating lever 71' is similar to that of the previous embodiment! ! ! It is pressed by a suitable biasing member so as to be able to engage with the spiral feeding member 76. The driving force of the motor 73 is transmitted to the feeding member 76 via a gear box 74 and a rotating shaft 75. Therefore motor 73
The operation lever 71' is moved by the rotation of , and the terminal end of the vertical conveying device 10 approaches or separates from the shell culm pinning transfer device 11, and the handling depth of the shell culm to be transported is changed. Further, the handling depth can be changed by manually operating the operating lever 71' by disengaging it from the feeding part lug 76. 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 potentiometer was used at the end of the vertical conveyance device 10 to detect the rotation state. A vertical conveyance device position detection sensor 78' is provided.

In such a configuration, in 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 3 does not match the actual state of the vertical conveying device 10 based on the detection result of the vertical conveying device position detection sensor 78', the operating lever 7
1' is assumed to have been manually operated, automatic adjustment of the vertical transport device 10 is prohibited for a predetermined period of time, and if the state of the vertical transport device 10 due to manual operation exceeds the control range of automatic adjustment, the predetermined period of time has elapsed. Later, the vertical conveying device 10 is returned to 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 prioritized and furthermore, the manual operation is controlled by manual operation. If the component is outside the automatic adjustment control range,
Since automatic adjustment is restarted after the controlled member is returned to within a predetermined range, there is no need for special operations to return to automatic adjustment, and subsequent compact automatic adjustment is possible. be effective.

[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, FIGS. 2 and 2 are longitudinal cross-sectional views of the device of the present invention, and FIG. 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 flowcharts for explaining the operation of the device of the present invention, and FIG. It is a schematic diagram which shows another Example of this invention. 3... Threshing device 6... Hull culm sensor 11... Hull culm transfer device 17... Handling barrel 21... Chaff sieve 21b... Fin 27... First grain removal section 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 to be controlled by manual adjustment or automatic adjustment within a predetermined range based on a predetermined detection signal, and the state of the controlled member/member during automatic adjustment does not correspond to the control result by automatic adjustment, A work characterized in that when the controlled member is outside a predetermined range, automatic adjustment of the controlled member is prohibited for a predetermined period of time, and then the controlled member is returned to within the predetermined range and automatic adjustment is resumed. machine for.