JPS60262518A - Harvester - 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 a harvester equipped with a threshing device.

[Prior art] The harvester feeds the shell culm harvested by the reaping section to the threshing device η using the conveyor device, the shell culm is threshed by the threshing device, and the threshed grain is further processed by the threshing device. It is used to sort and extract fine grains.

Among such harvesters, one has been developed that detects the load on the handling barrel of the threshing device and controls the traveling speed, engine speed, etc. of the machine so that the load is in an appropriate state.

For example, by automatically adjusting the engine speed according to the rotation speed of the handling cylinder and keeping the rotation speed of the handling cylinder within an appropriate range, work efficiency can be significantly improved, but recently, work efficiency has been improved even further. In order to achieve this goal, a harvester has been developed that can control the engine speed to be increased as much as possible as long as the speed of the handling barrel is within an appropriate range (insensitive). However, in such harvesters, when the handling barrel rotation speed rises beyond the appropriate range, control is performed to reduce the engine rotation speed.
When the rotational speed of the handling cylinder falls within the appropriate range, control is performed to increase the engine rotational speed, which can lead to unnecessary hunting.

(Purpose) The present invention was made in view of the above circumstances, and its "first objective is to improve the work efficiency by controlling the engine speed based on a predetermined threshing load." 1
In addition, W11 is achieved by preventing hunting by 11.
The aim is to improve the stability of m+ by 110 degrees, and this is also the purpose of this harvester.

〔composition〕

The present invention increases or decreases the engine speed for a predetermined period of time based on the load placed on the degreasing device, and increases or decreases the engine speed for a predetermined period of time.
The difference is 10 when it is 1 and when it is decreased by -1.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on drawings showing embodiments thereof. FIG. 1 is an external perspective view of a harvester according to the present invention.

In the figure, l is a roller that runs, and is driven by the driving force of the engine, the main clutch, the keyed mesh sub-transmission device, the main transmission using a power shift transmission, and the roller that runs through the clutch. The information is transmitted to l to make the machine run, while the moving roller l is transmitted to the threshing device 3 of the
The handling barrel, the winnowing device, etc., and the cutting blade 2 that goes into the cutting section 4 at the front of the machine. It is designed to drive the lifting device 7 and the like.

In addition, 9 in the figure is an operation column installed on the front blade of the driver's seat 8,
Reference numeral 6 denotes an auxiliary operation column installed on the side of the driver's seat 8, and the auxiliary operation column 6 includes a main transmission lever 93 for changing the traveling speed stage, and a main transmission lever 93 for changing the traveling speed stage. An auxiliary gear shift lever 95 is provided to change the descending speed stage.In addition, 10 is a vertical conveyance device, the terminal end of which faces the starting end of feed chain 2 of the culm pinching transfer device 11. Near this, on the front side of the threshing device 3, there is a husk culm sensor 62 that detects the general feeding of the husk being fed to the threshing device.
LJ has been established. The culm sensor 62 is not limited to this position, but may also be placed at the starting end side force of the culm pinching transfer device 11 or within the conveyance path of the vertical conveyance device IO.
In a harvester equipped with a node device, it may be configured to be used in common with a sensor provided for detecting culm length.

The culm pinching transfer device consists of foot chain I2 and pinching rod)
13, and is installed along the handling opening of the threshing device 3.

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

The threshing device '3 is located in the handling room 1, which is located in the machine casing'4.
Within 5, a large number of extracted teeth 16. 16 ... The body to be examined 17
is mounted on a shaft, a handling L1 is extended parallel to the axial direction of the handling cylinder 17, and a receiving net 18 is stretched in the lower part of the handling chamber 15,
Furthermore, a swing sorting device 19 is provided at the lower part of the handling chamber 5, which is substantially parallel to the axial direction of the handling cylinder 17. Handling trunk 17
is provided with a handling cylinder sensor 9/59 that detects its rotational speed. Furthermore, the upper right blade of handling barrel 17 (closer to the center of the fuselage)
A processing chamber 50 for reprocessing the first reduced product is installed at the position of , and a large number of processing chambers are installed in this processing chamber 50 with the axial direction of the processing chamber 50 aligned with the axial direction of the processing cylinder 17. Teeth 52.52
A processing unit 5I that carries out ... is mounted on a shaft.

The oscillating sorting device t9 is an oscillating sorting device that extends in an inclined manner! 20 and
It consists of a chaff sheave 2I installed at the rear F of the oscillating sorting board 20, a stroke rack 22 connected to the rear of this chaff sieve 21, etc., and a oscillator that oscillates in conjunction with a drive source. The handling cylinder 17 is moved by the movable arms 23,24.
It is configured to swing in the longitudinal direction of the axis.

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 (No. 2 1'') 30 consisting of a No. 2 grain plate 28 and a No. 2 screw 29.

The grain that fell first into the grain removal section 27 is the first grain that has fallen into the first 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 from the second screw 29 to the upper part of the second thrower tube 8 by the blower 47, and then passed through the processing barrel cover protruding above the processing chamber 50 on the roof plate of the threshing device 3. 53 onto the processing cylinder 51 to be re-sorted. The two No. 2 screws are provided with a No. 2 rotation sensor 63 that detects the number of rotations of the screws 29, and the processing cylinder cover 53 is provided with a No. 2 rotation sensor 63 that detects the amount of the No. 2 reduced material returned to the processing cylinder. A reduction substance amount server 64 is provided.

In the air passage 31, a drain sheave 32 is installed below the chaff sheave 21, and on the wind raising side of the air passage 31, a t
, pt Mino equipment 33 + installation C is included. Zoshi゛(This Karakino device 6° 3j (airflow from /J!L) J to Le 34□35
, (After being rectified, the air passes through the air path 3I) (1 behind the monument) 1 dust 1-1 and the first 11) 3 [From i to I-IJI
It is designed to be blown away by the wind.

Said step 1. +: After the l-sock 22, the I-force of the device 37 is installed (J, using an axial flow noan/, ;) suction IJI dust device 37, the suction Jul !7) 1-)
Japanese suction cover 38, and F section suction cover ()
9 is arranged and the suction of the oij recorder J37 (1) is carried out. + [+ open to wind path 31 full 1-IJ and co-otsuko, that (] 1 wind 1141 1 no 11 no moon 13 [j
It is facing LJ and opening 1-1.

+ii+Note-1f+l(Suction cover
-] Construct No. 4 gutter 43 to form No. 4 1-144 1
-7. Threshing (the culm, i.e. the stubs taken out from the waste) 11-1-Rack 22 Upper blade 6. It is composed of 7.

Figure 3 i11 Schematic block diagram of the control system of the present invention I melon
There is. In Fig. 1, 8 (H; i microphone I-J 21 mp-1-1) is a control unit that uses a microphone I-J, and a human capo 1-, 11 that enters the human power interface is connected to the rotation axis of the handling barrel 17. The output of the handling cylinder sensor 59 that is mounted and detects the rotation speed of the handling cylinder 17 is selected.

An engine sensor 60 that is attached to the output shaft of the engine 72 and detects the engine rotation speed is attached to the human capo-I and -U2.
The output of ``1'' is obtained.

Capo)~a3. a4. A5 is a main transmission using a power shift 4: A shift l-sensor 61 using a potentiometer, which is attached to the base end pivot of the speed change lever 93 and outputs a potential corresponding to the amount of rotation thereof. is connected, and the main shift lever 1]3 is set to 4th forward gear rF4J, 3rd gear 1st gear, 3rd gear 1st gear, 2nd gear [I-1, 1 Advance stage Gear 11, Q, Neutral gear [N1] [7 [J].

The output of a culm sensor 62 for detecting the conveyance of the grain culm to be fed to the threshing device 3 is input to the input capo 1'6.

The output of the first sensor 63 that detects the rotation speed of the -1st screw r--29 is connected to the input boat a, and the second sensor 9'63 is connected to the second When the number of revolutions of the boat reaches a predetermined number of 111, a high-level signal is output, and when the boat a7 is set to high-level, the second and second screw alarms LliD71 are turned on.

The output of the second reduction sensor 64 that detects the amount of the second reduction product is given to the input capos 1 to aB, and when the amount of the second reduction product reaches a predetermined value or more, the second reduction sensor 64 outputs a high level signal. Then, the bow 1-a8 is set to high level and the second return alarm LED 72 is lit.

An automatic switch 65 for controlling the vehicle speed is connected to the input boat a9, and heavy speed control is performed when the switch/chiro 5 is turned on.

A reaping switch 66 that is turned on when the reaping latch is in the stopped state is connected to the input capo 1a ++, and a reaping switch 66 that is turned on when the threshing clutch is in the stopped state is connected to the input capo-1a ++. The threshing switch 67 is connected, and each sui-nochi 66 and 67 are turned on.
fl+ aI+ each becomes high level.

Input port -'+2. A13 is provided with an auxiliary shift lever switch 633, which is provided at the base end pivot portion of the auxiliary shift lever 95 connected to the gear-meshing type auxiliary transmission device, and which operates according to the rotational position of the auxiliary shift lever 95. The sub-shift lever 95 is in the low gear state r1. If J, enter capo t□ a
12 is low level hell 2 a13 is high level level, and when it is in middle gear state rMJ, both cabots a, 2, and a13 are in high level gear state, and furthermore, in high gear state "FI"
In this case, the input port a+2 becomes high I/hell, and the input port a+2 becomes low hel.

A regulator switch 69 is connected to the input capo 1□ a ++, which is turned on when the regulator lever 73a on the engine 73 reaches the rotation limit position (maximum engine output! 3). When turned on, the input boats all become high rails.

An emergency engine switch 70 is connected to the input capo T-215, which is turned on when stopping the aircraft in an emergency.
L a 15 becomes Lore Hell.

On the other hand, a shift motor 74 for rotating the main shift lever 93 is connected to the output boats b1 and l)2 of the output interface connected to the control unit 80, and the output boat b+ is Hi-Rehel, and the output boat b2 is Low-Rehel. When the gear becomes low, the shift 1 motor 74 rotates to ilE, and the main gear shift lever 93 is rotated to the high speed gear side, and conversely, the output cap l b 1 changes to low μ.
When the output capole 1b2 becomes the high rail, the motor 74 rotates in the reverse direction and the gear shift lever 93 is rotated to the low speed gear side.

An accelerator motor 75 for rotating the accelerator lever 94 is connected to the output boats lJ3 and b4.
When -b becomes high level and output boat b becomes low μ＼, the accelerator motor 75 is rotated forward and the accelerator lever 94 is rotated to the i rotation side, and conversely, the output boat b is rotated in the forward direction. l
-b 3 is low μ...le, output port b 4 is high
When it reaches ＼, the accelerator motor 75 is reversed and activated.
1 rotation wheel 1] 4 is rotated to the low rotation side.

An automatic lamp 76 that lights up when in an automatic control state is connected to the output boat b5.
Automatic lamp 76 depending on I・l+, 0 month no...l output
lights up.

The output coupler is connected to an IW/increase finger lever 77 that indicates that the auxiliary gear shift lever 613 should be rotated to the high speed side, and the output coupler is connected to the output coupler. A deceleration instruction lamp 7, which prompts the auxiliary shift lever 68 to be rotated to the low speed side, is connected, and each output capo-1-be.

Each lamp 77, 78 is turned on by the low level signal b7.

An alarm buzzer 79 is connected to the output boat bl, and the buzzer 79 sounds in response to a high-level signal from the output boat bo.

Output boat b has V! signal 1 and ED90 are connected, and the high level signal of the port b9 causes [, ED9
0 lights up.

A load monitor 91 that displays the rotational speed of the handling cylinder is connected to the output capo b+o, and the output capo 1-bll is connected to a load monitor 91 that displays the rotation speed of the handling cylinder. Self-diagnosis LED that displays a predetermined indication regarding the abnormality
92 is connected.

The operation of the inventive machine configured as shown in Figures 4 to 8 shows
This will be explained based on the flowchart shown in the figure.

When the key switch is turned on, a flag K indicates that it is time to start mowing, an engine flag S indicates that single rotation speed control has been performed at the start of work, and a main transmission 6.
1. Notes on the traveling speed stage of the partial shift lever 95 in IJ. !
477 Pm, and the stored value Ps of the speed stage of the sub-shift lever 95 is reset (=0). Soshi'C
It is determined whether or not the engine 73 is started based on the output of the engine sensor 0.

Now, when the engine is started and the automatic switch 65 is turned on to control the vehicle speed, the threshing clutch is engaged and the threshing switch 67 is turned on, the control device 80
is ready for vehicle speed control.

That is, the reaping latch is closed and the reaping switch 66
Since the conveyor culm is in a state where it is in a state where it is not being harvested and the reaping work is not being carried out, there is no transport culm, and the culm sensor 6211 *
The engine flag S is in the off state, and the engine flag S is 1-5 (=
Since S=Q, the control device 80 controls the automatic lamp 7fi.
-U flashes to notify that automatic control based on the rotational speed of the handling cylinder has not been started, and the engine rotational speed is set within the appropriate rotational speed range (α-β) during work. This is done by determining whether the rotation speed of the engine 73 is within the appropriate range (α-β) based on the detection fi& of the engine and sensor 60, and if the detected value is 2 or less than the minimum value α of the appropriate range (or the maximum value β or more), the control unit 80 continuously outputs a predetermined signal to continuously drive the accelerator motor 75 in forward (or reverse) rotation, and moves the accelerator lever 94 as the engine speed increases (or (decrease) to keep the engine speed within the appropriate range.

Even when the engine speed falls within the appropriate range, the engine flag S is not set to the cent state and remains in the reset state.

Now, with the engine speed within the appropriate range, set the reaping latch to the engaged state, and manually operate the main gear shift lever 93 to set the predetermined travel speed to start work.
The culm harvested by the reaping section 4 is fed to the threshing device 3, the culm sensor 62 is turned on, the automatic lamp 76 is turned on, and the accelerator motor 75 is activated for a predetermined period of time L2.
The engine is rotated in the normal direction over a period of time, increasing the engine speed slightly above the appropriate range. This means that when you start work with the engine running at the proper speed, the handling cylinder 17. Ichiban Screw 26
As the load is suddenly applied to the grains etc., the engine speed decreases, and while the engine speed is again within the appropriate range, the threshing processing accuracy, sorting pile, etc. are changed to yH (leading to loss of 14 i of grain, etc.). I have skin that's rough, so I avoid this feeling of skewering.
] It is done in order to

If the number of rotations of the engine is within the appropriate II range, 1, or slightly increased, it will be slightly higher than I'4. l! J: Every time the predetermined control of M is performed, the
It is said that In this case, the mowing start flag 1 (receiver 1 Fuyu K = o) (, wait for the predetermined 1.5 period to elapse - (, to the rotational speed of the handling cylinder) AJ < - i + i speed O
・Dynamic control of engine rotation speed is performed. This time (
, is the number at the start of work, 11 The amount of culm to be generally fed is constant -
11-4", the threshing operation is also unstable, so the automatic control based on the rotation speed of the handling cylinder is in a very unstable state. is controlled to increase the speed - (non-1) is dangerous - (there is a situation like this, 1) -
It was made by sea urchin. This time (.

If the Φum number becomes low in the optical path' during the treatment +11i1 time, or time 1. If the No. 2 rotation sensor 963 is damaged due to a blockage in the C4 No. 2 screwdriver 29 during the interval, the aircraft will stop traveling as shown in Fig. 5 and the motor 74 will be driven in reverse. and neutral position ii'2 r N
Continuously shift 1-down-1 until J. Further, when the amount of the second reduction product becomes too large and the switch 64 is turned on at the first reduction, the shift I motor 74 is driven in the reverse direction to shift down as shown in FIG.

After a predetermined period of time has passed, the mowing start flag will be set!
a<K=+), and the main gear shift lever 93 is in the neutral state BoN.
If the aircraft is in a running state where it is not, automatic control is performed depending on the rotational speed of the handling trunk, and if the aircraft is at a standstill, the control device 80 goes into a standby state.

Next, regarding the automatic control of vehicle speed and engine rotation speed based on the rotation speed of the handling cylinder, flowchart 1 shown in FIGS. 6 to 8.
- and will be explained based on Tables 1 and 2. Table 1 summarizes the relationship between the rotational speed of the handling cylinder X and the control system, etc.

(Left below) 5.1 Table Vehicle speed and engine rotation speed are controlled based on the rotation speed of the handling cylinder, but the rotation speed of the handling cylinder X is generally 1 [range ((,<X<d)
, the first low rotation range () lower than the appropriate range (X≦C)
, furthermore, the first low rotation range, J, the lower second low rotation range (, U<X≦1)), the lower low rotation range (X≦, I) than the second low rotation range, appropriate It is distinguished into six stages: a first il'l+ rotation range (d≦X<a) higher than the above range, and a 219th rotation range (e≦X) which is further 11+ higher than the j-th high rotation range.

Now, to explain the control contents for each range,
When the rotation speed of the handling cylinder falls within the second Ai rotation range ((U≦X), the control device 80 drives the shift 1-moke 74 to the 11: axis and rotates the main shift lever 93 to the high speed side. , ・Set up the speed stage.The dirt is handled by the cylinder 1'h 4::j;
/J
The amount of grain culm that is handled and fed to 11jl is increased by a certain amount.

One power, handling cylinder rotation speed is in the second low rotation range (a<) (≦1)
), the soft motor 74 is driven in the reverse direction to rotate the main shift lever 93 to the low speed side, and -speed gear 71- is lowered. At the same time, the accelerator motor 75 is driven to rotate in the normal direction for a predetermined time tu to increase the engine speed by a predetermined amount. This is because the handling torso load is heavy on non-electricity, so by decelerating the aircraft and reducing the shell culm fed to the handling torso, and by slightly increasing the engine speed, the handling torso is This is intended to slightly increase the rotational speed. After such a vehicle speed change, wait for a predetermined time t7 (or t.) to elapse, check the handling cylinder rotational speed, and check if the handling cylinder rotational speed is still in the second high rotational speed range (e≦X) (or If the rotation speed is within the second low rotation speed range (a<X≦b), the same control is repeated.

By repeating this control, even if the traveling speed of the main shift lever 93 reaches the 4th gear rF4j (or I gear rFIJ), the handling cylinder rotation speed remains in the second high rotation speed range (e≦X) [or the second If the rotation speed is within the low rotation speed range (a<X≦b), the accelerator motor 75 is driven in reverse (or forward rotation) for a predetermined time td (or tu) to reduce the engine rotation speed by a predetermined amount n'. (or increase) If the rotational speed of the handling cylinder is still within the second high rotational speed range (e≦X)C or the second low rotational speed range (a<X≦b) even after the predetermined time tll has elapsed, the sub-shift A speed increase (or deceleration) instruction lamp 77 that prompts you to change the auxiliary speed change lever 95 on the device to the high speed side (or low speed side).
(or 78) flashes.

When the sub-shift lever 95 is operated to change, the sub-shift lever switch 6
8 is switched, or the sub-shift lever 95 is set to high speed gear I.
When the vehicle is in N (J (or low speed drive stage rLJ)), the speed increase (or deceleration) instruction lamp 77 (or 78) does not blink.

When the rotational speed of the handling cylinder is within the first high rotational speed range (d≦X<e) (or the first low rotational speed range (b < X≦c)), the time chart in Fig. 9 As shown in , the accelerator motor 75 is driven in reverse (or forward) for a predetermined time td (or tu) to slightly reduce the engine speed (
or increase) (where td>tu). After that, wait for the predetermined time Ls (or [5) to elapse, check the rotation speed of the handling cylinder, and check if the rotation speed of the handling cylinder is the first high (or low).
When the rotation speed range is within the range d≦X [<e (or b<X≦C), shift 9. Drives the motor 74 to shift the running speed gear of the main transmission to non-1.
- up (or shiso 1 - down). In this case, if the rotational speed of the handling cylinder is in the first l111 rotational speed range d≦X<e+, the accelerator Tanabata 7 at the same time as the Jit-J' knob.
5 is driven for a predetermined period of time and the engine rotational speed is increased to prevent the engine rotational speed from becoming low due to a sudden increase in the U-1 shell culm.

Even with the main transmission and the 11-speed control of the engine speed, the handling barrel speed remains within the first quotient (or low) speed range (
If j≦X<e (or b×≦(1), then the prescribed 11
The same control is performed after waiting for one period t-I (or t[I) to elapse. Then, when the traveling speed of the main transmission reaches 4th gear rF4j (or 1st gear rFIj), the handling cylinder rotational speed remains at the first high speed (
or low) rotation speed range (1≦X<e (or b<x≦C), a speed increase (or deceleration) instruction lamp 77 (or 7) () I
Destroy +1. The lamp 77 (or 78) is displayed when the auxiliary shift lever 95 is operated and the auxiliary shift lever switch 6B is switched, or when the auxiliary shift lever 950 is set to high gear 1l-IJ (or low gear "L"). It will not blink if .

When the rotational speed of the handling cylinder is within the appropriate range (c<) (<d), the accelerator motor 75 is driven to rotate forward for a predetermined time tu to increase the engine rotational speed.

If the rotational speed of the handling cylinder is within the appropriate range (c<X<d) even after the predetermined time L2, the accelerator motor 75
is rotated in the normal direction for a predetermined period of time tu to increase the engine speed, and the engine speed is eventually increased to the maximum speed of the engine 73 at which the regulator switch 69 is turned on.Work is carried out in this state. accelerator motor 75
The time tu for driving the accelerator motor 75 in the forward rotation is set to be shorter than the time td for driving the accelerator motor 75 in the reverse rotation in the first high rotation range of Mit'&(tu<td).

Therefore, the threshing operation is performed with the rotational speed of the handling cylinder within the appropriate range and the engine output being at its maximum, and the threshing operation is performed with high efficiency.

In addition, when the rotation speed of the handling cylinder is within the appropriate range, in order to increase the engine rotation speed, the shaft is driven by 1 for a predetermined time tll, and the rotation speed of the handling cylinder is increased to be within the first high rotation range. As mentioned above, the accelerator motor 75 is
The rotation speed of the engine is reduced by driving the accelerator motor 75 in reverse to reduce the rotation speed of the engine. Since the normal rotation drive time tu is set longer than the normal rotation drive time tu, the handling cylinder rotation speed is immediately brought within the JjF- range, and every time control is performed to increase the engine rotation speed as much as possible.

In addition, when the rotational speed of the handling cylinder is within the first high rotational range (d≦X<e), the rotational speed of the handling cylinder can also be reduced within the appropriate range (by driving the accelerator motor 75 in reverse for a predetermined time Ld
If c <

In addition, in controlling the vehicle speed and engine rotation speed of 1-J engine, after the shift 1-up or shift 1-down of the -1-mi transmission is performed, during a predetermined period of time, or +J engine rotation speed. was changed 1 wheat The rotation speed of the handling cylinder became abnormally low during the elapse of a predetermined period of time, and the rotation speed became abnormally low (X≦d)
If this occurs, or if the second rotation sensor 63 turns on due to blockage in the second screen 29, the vehicle speed and O/engine rotation speed based on the number of rotations of the handling cylinder are determined as shown in Fig. 5. Automatic control is not performed, and the shift motor 74 is driven in the reverse direction, the main transmission 6 is set to the neutral gear 1''NJ, and the traveling of the aircraft is stopped.

Also, if the amount of the second reduction substance becomes too large, the second reduction sensor 64
When turned on, the shift motor 74 is driven in the reverse direction to downshift as shown in FIG.

In either case, the emergent engine switch 70
When turned on, the main transmission becomes neutral gear [N-1] and the aircraft stops traveling.

- When the reaping operation of the stroke is completed, the culm center 62 is turned off, and the control device 80 stores the traveling speed stage of the main transmission at the time when the culm sensor 62 is turned off as I'm. Record the running speed of the sub-transmission device as Ps1
．． a, the automatic control based on the number of rotations of the handling cylinder is prohibited and the automatic lamp 76 flashes. Then, after the predetermined rotation operation is performed and the shell culm sensor 62 is turned off, the engine rotation speed is adjusted to the appropriate range (α-β) after a predetermined time L3 when the operation is considered to have been completed. ili control. The control is as described above at the beginning of mowing.
This is similar to the control to keep the engine speed within the appropriate range, and the accelerator motor 75 is continuously driven so that the engine speed is within the appropriate range. This is because grain culms remain in the threshing device 6' at the start of the threshing process, which adds to the load on the handling barrel, and at the time of the rounding, the load for accompanying the grain (such as the load added when the running rollers are stopped) is also added. Therefore, if the herring rotation speed is controlled immediately after the shell culm sensor 62 is turned off, the engine will be set to high rotation, or the shell culm in the threshing device 3 will be threshed and the W is reduced and the turning action ends J7
Since the 14th rotation negative i is also eliminated, the engine speed is always high, so the engine speed is adjusted to an appropriate range after the turning operation is completed.

When the accompanying operation is completed and the shell culm sensor 62 detects the conveyed shell culm, the automatic lamp 76 lights up and the accelerator motor 75 is rotated 1L for a predetermined period of time (1. After the predetermined time t5 has elapsed, a predetermined travel speed setting control is performed to set the main transmission and the sub-transmission to the optimum travel speed.

FIG. 8 is a flowchart 1- of the traveling speed stage setting control. The control device 80 first determines whether or not the auxiliary transmission has been shifted to the first gear by comparing the detection result of the auxiliary transmission lever switch 68 with the stored value Ps, and if the two match, Assuming that the auxiliary gear shift lever 95 is not operated, the traveling speed gear of the main transmission device is set to the speed gear lower than the previous gear. That is, the current traveling speed is determined from the output signal of the shift down generator 61, and if the current speed does not match the stored value Pm of the previous speed, the driving speed is changed to the stored value Pm. The shift 1 motor 74 is driven. When the traveling speed stage of the main transmission becomes equal to that before the same, automatic control of the vehicle speed and engine speed based on the rotation speed of the handling cylinder is performed after waiting for the elapse of a predetermined time t4.

On the other hand, if the running speeds of the auxiliary transmission before and after the match do not match, the speed increase or deceleration instruction lamp 77 or 78 is displayed and the running speed before the match is 4th gear IF4 or 1 gear. When it is "Fl", the traveling speed stage of the main transmission is set so that the traveling speed after the entrainment is approximately equal to the traveling speed of the aircraft during the rotation O11. Table 2 shows the set speed stages of the main shift in this case.

Table 2, that is, the accompanying 1ijO main transmission is in 4th gear "F4",
When the auxiliary transmission is in the low speed gear "I7",
When the auxiliary transmission after accompanying is in medium speed gear I' M J, the main transmission is in 2nd gear "F2", and the auxiliary transmission after accompanying is in high speed traveling gear "H". At times, the shift motor 74 is driven in reverse so that the main transmission is in the first gear "Pl". In addition, the main transmission before traveling is in the 4th gear "F4", and the auxiliary transmission is in the middle speed running gear rMJ.
In this case, the auxiliary transmission after rotation is in high speed gear r.
When HJ is selected, the main transmission is in 1st gear "Fl".
”.

On the other hand, when the main transmission before the rotation is in the 1st gear "Fl" and the auxiliary transmission is in the high speed gear rHJ, and the auxiliary transmission after the rotation is in the middle speed gear rMJ, The main transmission is set to the third gear "F3", and when the subsequent sub-transmission is set to the low speed running gear rLJ, the main transmission is set to the fourth gear "F4". In addition, when the main transmission before turning is in 1st gear rP1j and the sub-transmission is in medium-speed running gear rMJ, when the sub-transmission after accompanying is in low-speed running gear "L", the main transmission is in low-speed running gear "L". The transmission is a 3-speed 1-stage "F3".

7 When changing the running speed gear of the main transmission, if the speed gear to be changed is two or more gears apart from the speed gear changed after the rotation i;
The speed stages are changed sequentially while being held during the ID.

If the combination of the running speeds of the main transmission and auxiliary transmission before the rotation and the combination of the running speed of the auxiliary transmission after the rotation is other than the above-mentioned embodiment, the stored value I of the running speed of the main transmission 'm=7 degrees (1'm=0), and control is started at the travel speed set by the driver. The subsequent automatic control is the same as described in ii1.

In the above-described embodiment, a power shift transmission is used as the main transmission, but a hydrostatic drive may be used instead.

〔effect〕

According to the present invention, when the rotational speed of the handling cylinder increases and exceeds the appropriate range, the accelerator motor 75 is driven for a predetermined period of time to reduce the engine rotational speed to bring the rotational speed of the handling cylinder into the appropriate range. If the range is 8, the accelerator motor 7 is activated to increase the engine speed.
5 is driven for a predetermined period of time, and the driving time of the accelerator motor 75 when decreasing the engine speed is set longer than the driving time of the accelerator motor 75 when increasing the engine speed. Therefore, if the engine speed exceeds the appropriate range, it will be determined that it is within the appropriate range, and conversely, if the engine speed is within the appropriate range, the engine speed will be increased for a short period of time. As a result, threshing work is performed in a high engine speed range within the appropriate range of handling barrel speeds, significantly improving work efficiency, and furthermore, enabling stable control without the risk of hunting. Become.

Furthermore, in the embodiment described above, when the rotational speed of the handling cylinder is within the appropriate range, the accelerator motor 75 is driven to increase the engine rotational speed, and the work is performed with the engine rotational speed at the maximum. Able to work efficiently.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is an external perspective view of the machine of the present invention, Fig. 2 is a partially cutaway side view of the threshing device, and Fig. 3 is a schematic diagram of the control system of the machine of the present invention. block diagram, 4th
FIGS. 1 to 8 are time charts for explaining the details of the present invention. FIG. 9 is a time chart of a part of the chart.・・・
Sub-operation column j7... Handling cylinder 29... No. 2 screw 59... Handling cylinder upper part 60... Konishin Senna 61... Schiff 1-sensor 62... Culm sensor
63... Second rotation sensor 64... Second reduction sensor 68... Sub-shift lever switch 73... Engine 74... Shift I-motor 75... Accelerator motor 76... Automatic lamp 77 ...Speed increase instruction hump 7
8...Deceleration instruction lamp 80...Control unit patent Applicant: Yanmar Agricultural Machinery Co., Ltd. Agent Patent attorney: Noboru Kono

Claims (1)

[Claims] 1. A load detector on the threshing device, an engine speed changer for changing the engine speed, and a load detected by the load detector to increase at least the engine speed. means for discriminating into ranges and ranges for decreasing the engine speed and increasing the engine speed in each range, respectively; means for driving the engine speed changer in predetermined time units so as to increase the engine speed; A harvesting machine characterized by: