JPS60244227A - 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 in the reaping section to the threshing device using a conveyance device, the shell culm is threshed by the threshing device, and the threshed grains are further sorted and refined. It is for extracting.

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

〔the purpose〕

The present invention relates to a harvesting machine capable of automatically controlling the running speed and engine rotational speed, and particularly to a harvesting machine that maximizes its threshing processing ability.

〔composition〕

The present invention automatically controls the traveling speed and engine speed of the aircraft so that the rotation speed of the handling drum is within the appropriate range, and increases the engine speed for a predetermined time if the handling drum rotation speed is within the appropriate range. This is what I did.

〔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, 1 is a running roller, and the driving force of the engine is transmitted to the running roller 1 through a main clutch, a gear mesh type sub-transmission, a main transmission using a power shift transmission, and a side clutch. While being transmitted to make the machine run, it also drives the handling cylinder, winnowing device, etc. in the threshing device 3 above the running rollers 1, and the cutting blade 2, pulling device 7, etc. in the reaping section 4 at the front of the machine. It has become.

In addition, 9 in the figure is an operation column provided in front of the driver's seat 8;
6 is an auxiliary operation column provided on the side of the driver's seat 8;
The auxiliary operation column 6 is provided with a main shift lever 93 for changing the running speed in the main transmission, and an auxiliary shift lever 95 for changing the running speed in the auxiliary transmission. Also 1
Reference numeral 0 denotes a vertical conveying device, the terminal end of which faces the starting end of the feed chain 12 of the shell culm transfer device 11, and near this and in front of the threshing device 3, there is a device for feeding the grain to the threshing device. A shell culm sensor 62 is provided to detect the conveyance of the shell culm. Note that the culm sensor 62 is not limited to this position.
It may be placed on the side of the starting end of the culm cutting device 11 or within the conveyance path of the vertical conveyance device 10, and in a harvester equipped with an automatic handling depth adjustment device, it is configured to be used in common with a sensor provided for culm length detection. You can also use it as The culm pinching transfer device is composed of a feed chain 12 and a 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 has a handling barrel 17 having a large number of handling teeth 16, 16... mounted on a shaft in a handling chamber 15 formed in the upper part of the machine housing 14, and parallel to the axial direction of the handling barrel 17. In addition to extending the handling port, a receiving net 18 is provided in the lower part of the handling chamber 15, and a swing sorting device 19 is provided in the lower part of the handling chamber 15, which is substantially parallel to the axial direction of the handling cylinder 17. It is something that The handling cylinder 17 is provided with a handling cylinder sensor 59 that detects its rotational speed.

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 shaft 51 having a large number of handling teeth 52, 52, .

The swinging sorting device 19 includes a swinging sorting board 20 extending in an inclined manner,
It is composed of a chaff sheave 21 provided at the lower rear of the swinging sorting board 20, a stroke rank 22, etc. connected to the rear of the chaff sheave 21, and a swinging arm that swings in conjunction with a drive source. 23.24 said handling cylinder 17
It is configured to swing in the longitudinal direction of the axis.

Further, below the swing sorting device 19, there is a first grain removal 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.
1 is formed.

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 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 No. 2 screw 29 is provided with a No. 2 rotation sensor 63 that detects the rotation speed of the screw 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. An original sensor 64 is provided.

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 suction/discharge seat device 37 using an axial fan is provided at the rear and upper part of the stroke rank 22, and an upper suction cover 38 is disposed above the suction/discharge seat device 37, and a lower suction cover 39 is disposed below the suction/discharge seat device 37. The suction port 40 of the suction/discharge seat device 37 is opened to the air passage 31 side, and the air exhaust port 4 is opened to the air passage 31 side.
1 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, through which the created grains taken out from the culm after threshing, that is, the waste straw, are collected through the straw. - The rack 22 is configured to be returned upward.

FIG. 3 is a schematic block diagram of the control system of the machine of the present invention.

In the figure, 80 is a control unit using a microcomputer, and an input port a1 in its input interface receives the output of a handling cylinder sensor 59 that is attached to the rotating shaft of the handling cylinder 17 and detects the rotation speed of the handling cylinder 17. It is being

The input port a2 is attached to the output shaft of the engine 72,
The output of an engine sensor 60 that detects the engine speed is given.

A shift sensor 61 using a potentiometer is connected to the input port a3+ al+ a5, which is attached to the base end pivot portion of the main shift lever 93 in the main shift device using a power shift, and outputs a potential corresponding to the amount of rotation thereof. The output potential of the shift sensor 61 causes the main shift lever 9 to
3 is the 4th forward gear rF4J', the 3rd forward gear rF3J, the 2nd forward gear rF2J, the 1st forward gear "Fl", and the neutral gear r
Determine which state NJ is in.

The output of a shell culm sensor 62 for detecting the conveyance of the shell culm to be fed to the threshing device 3 is provided to the input capo a6.

The input port a7 is given the output of a second sensor 63 that detects the number of rotations of the second screw 290, and the second sensor 63 detects the number of rotations when the number of rotations of the second screw 29 falls below a predetermined value. output a high level signal, and
Set 7 to high level and turn on the second screw alarm LED.
71 is lit.

The output of the second reduction sensor 64 that detects the amount of the second reduction product is given to the input port ae, and when the amount of the second reduction product exceeds a predetermined value, the second reduction sensor 64 outputs a high level signal to detect the amount of the second reduction product. The boat 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 capo AS, and when the switch 65 is turned on, the vehicle speed is controlled.

A reaping switch 66 that is turned on when the reaping latch is in the stopped state is connected to the input port AGO, and a threshing switch 66 that is turned on when the threshing clutch is in the stopped state is connected to the input port AU. 67 is connected, and when each switch 66, 67 is turned on, input ports a+n+a
I+ becomes high level.

The input capo) a121a13 is provided with a sub-shift gear shifter 68 which is provided at the base end pivot portion of the sub-shift lever 95 in the gear-meshing type sub-transmission device and operates according to the rotational position of the sub-shift lever 95. So, the sub-shift lever 95 is in the low gear position! 3 "L", input port a12 becomes low level + a13 becomes high level, middle gear state 1M.
If it is, then both capo) a12 and a13 will be high level, and if it is a high-speed stepped fi rHJ, input capo) a12 will be high level, input port a
13 becomes low level.

The input port a++ has a regulator switch 69 that is turned on when the regulator lever 73a in the engine 73 reaches the rotation limit position (maximum engine output state).
is connected, and when the switch 69 is turned on, the input ports a and 4 become high level.

An emergent engine switch 70 that is turned on when stopping the aircraft in an emergency is connected to the input port a.
15 becomes low level.

On the other hand, a shift motor 74 for rotating the main speed change lever 93 is connected to the output capo) b+ and b2 of the output interface in the control unit 80, and the output capo) b+ is at a high level and the output port b2 is at a low level. When this happens, the shift motor 74 rotates in the normal direction and the main gear shift lever 93 is rotated to the high speed gear side.On the other hand, when the output capo hb+ becomes a low level and the output port b2 becomes a high level, the motor 74 rotates in the reverse direction and the main gear shift lever 93 is rotated to the high speed gear side. 93 is rotated to the low-speed traveling gear side. ' The accelerator motor 75 for rotating the accelerator lever 94 is connected to the output ports b3 and b, and when the output port b3 becomes high level and the output port b< becomes low level, the accelerator motor 75 rotates forward. Accelerator lever 9
4 is rotated to the high rotation side, and conversely, when the output port b3 becomes low level and the output port b becomes high level, the accelerator motor 75 is reversed and the accelerator lever 94 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 port b5, and the automatic pump 76 lights up due to the low level output of the output port b5.

A speed increase instruction lamp 77 is connected to the output port b6, which prompts the auxiliary shift lever 68 to be rotated toward the high speed side, and the output port b7 is connected to the output port b7, which prompts the auxiliary shift lever 68 to be rotated toward the low speed side. A deceleration instruction lamp 7th is connected to remind the user what to do, and the lamps 77 and 78 are turned on by low level signals from the output ports b6 and b7, respectively.

An alarm buzzer 79 is connected to the output capo-be.
The buzzer 79 sounds in response to the high level signal at the output port bθ.

An alarm LED 90 is connected to the output port b9, and the LED 90 lights up in response to a high level signal from the port b9.

A load monitor 91 that displays the rotation speed of the handling cylinder is connected to the output port b + o, and the output port ' bll
is a self-diagnosis LE that displays a predetermined display related to an abnormality when an abnormality is discovered by the self-diagnosis of the control unit 80.
D92 is connected.

The operation of the apparatus of the present invention constructed as described above will be explained based on the flowcharts shown in FIGS. 4 to 8.

When the key switch is turned on, a flag K indicating that it is time to start mowing, an engine flag S indicating that engine speed control has been performed at the start of work, and a memory of the traveling speed stage of the main shift lever 95 in the main transmission device. The value Pi and the stored value PS of the speed stage of the sub-shift lever 95 are all reset (-0). Then, it is determined whether the engine 73 is started based on the output of the engine sensor 60.

Now, the engine is started, and the automatic switch 65 is turned on to control the vehicle speed, and the threshing clutch is set to the relay state and the threshing switch 67 is turned on.
is ready for vehicle speed control.

That is, the reaping latch is cut off and the reaping switch 66 is off, and since no reaping work is being performed, there is no conveying culm, the culm sensor 62 is off, and the engine flag S is is in the reset state S-O, the control device 80 flashes the automatic lamp 76 to notify that automatic control based on the rotation speed of the handling cylinder has not been started, and also sets the engine rotation speed to the appropriate rotation speed during work. The range is (α-β). This is done by determining whether the rotation speed of the engine 73 is within the appropriate range (α-β) based on the detected value of the engine sensor 60, and if the detected value is below the minimum value α (or the maximum value β) of the appropriate range. or above), the control unit 80 continuously outputs a predetermined signal to continuously drive the accelerator motor 75 in forward (or reverse) rotation, and controls the accelerator lever 94 so that the engine speed increases (or decreases). Rotate the engine in the direction shown below 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, the engine speed is within the appropriate range.

The reaping latch is set to the engaged state, and the main gear shift lever 93 is
When work is started by manually setting the speed range to a predetermined running speed, the husk cut by the reaping section 4 is fed to the threshing device 3, the culm sensor 62 is turned on, and the automatic lamp is turned on. 76 is turned on, and the accelerator motor 75 is rotated in the normal direction for a predetermined time t2 to slightly increase the engine speed above the appropriate range. This means that when you start work with the engine running at the proper speed, the handling cylinder 17. Because the load is suddenly applied to the first screw 26, etc., the engine speed decreases, and while the engine speed is brought back within the appropriate range, threshing processing accuracy, sorting accuracy, etc. deteriorate, resulting in grain loss. This was done in order to avoid such a situation, as there is a risk that this may occur.

When the engine speed reaches a value slightly higher than the appropriate range, the engine flag S, which indicates that the predetermined control of the engine speed at the start of work, is set to S = 1.
It is said that In this case, since the mowing start flag is in the reset state = 0, automatic control of the vehicle speed and engine speed based on the rotation speed of the handling drum is performed after waiting for the elapse of the predetermined time t. During this time t, since the amount of husks transported is not constant at the start of work and the threshing work is also unstable, if automatic control is performed based on the rotation speed of the handling cylinder in such an unstable state, The aircraft is controlled to increase its speed, which is extremely dangerous, so this situation was designed to be avoided. This time t.

If the rotational speed of the handling barrel becomes abnormally low during the time t4, or if the No. 2 screw 29 becomes clogged and the No. 2 rotation sensor 63 turns on during the time t4, the aircraft In order to stop traveling, the shift motor 74 is driven in reverse to continuously downshift to the neutral position rNJ. In addition, if the amount of the second reduction product becomes too large and the second reduction sensor 64 is turned on, the shift motor 74 is activated as shown in FIG.
to shift down by driving in reverse.

When the predetermined time t has elapsed, the mowing start flag is set to the center state (K=1), and if the main gear shift lever 93 is not in the neutral state rNJ and the machine is in a running state, the mowing start flag is set to the cent state (K = 1), and when the main shift lever 93 is not in the neutral state rNJ and the machine is running, the mowing start flag is set to the cent state (K = 1). If the control is performed and the aircraft is in a stopped state, the control device 8o will be in a standby state.

Next, automatic control of vehicle speed and engine rotation speed based on the rotation speed of the handling cylinder will be explained based on the flowcharts of FIGS. 6 to 8 and Tables 1 and 2. Table 1 summarizes the relationship between the handling cylinder rotation speed X and the control details.

Table 1 Vehicle speed and engine rotation speed are controlled based on the rotation speed of the handling drum. X≦c), and a second low rotation range lower than the first low rotation range (a<X
≦b), an abnormally low rotation range lower than the second low rotation range (
X≦a), first high rotation range higher than the proper range (d≦X
<e) A second high rotation range that is higher than the first high rotation range (
It is distinguished into six stages (e≦X).

Now, to explain the control contents in each range, when the handling barrel rotation speed falls within the second high rotation range (e≦X), the control device 80 drives the shift motor 74 in normal rotation to move the main shift lever 93 to high speed. It rotates to the side and performs a -speed stage shift amplifier. This is because the load on the handling torso is very light, so the speed of the aircraft is increased to increase the amount of shells fed to the handling torso.

On the other hand, the handling cylinder rotation speed is in the second low rotation range (a<) (≦b)
When the shift motor 74 is driven in the opposite direction, the main speed change lever 93 is rotated toward the lower speed side, and the -speed stage is shifted down. At the same time, the accelerator motor 75 is driven to rotate forward for a predetermined period of time to increase the engine speed by a predetermined amount. This is because the handling torso load is very heavy, so the aircraft is decelerated to reduce the amount of shell fed to the handling torso.
The purpose is to slightly increase the rotation speed of the handling barrel by slightly increasing the engine rotation speed. After such a vehicle speed change, wait for a predetermined time t7 (or t8) to elapse, check the handling cylinder rotational speed, and check if the handling cylinder rotational speed is still at the second high rotational speed - (e≦X) (or Second low rotation speed range (a<
) (≦b)), the same control is further repeated.

By repeating this control, even if the traveling speed of the main shift lever 93 reaches the 4th gear rF4J (or 1st gear "FLJ"), the handling cylinder rotational speed remains within the second high rotational speed range (e≦X) [or 2
If the engine speed is within the low engine speed range (a<X≦b), the accelerator motor 75 is driven in reverse (or forward) for a predetermined period of time to decrease (or increase) the engine speed by a predetermined amount. Even after the predetermined time t11 has elapsed, the rotational speed of the handling cylinder remains in the second high rotational speed range (e≦X) [or the second low rotational speed range (a<X).
≦b)), the speed increase (or deceleration) instruction lamp 77 (or 78) is flashed to prompt the user to change the sub-shift lever 95 in the sub-transmission device to the high speed side (or low speed side). .

When the sub-shift lever 95 is operated to change, the sub-shift lever switch 6
8 is switched, or the auxiliary gear shift lever 95 is set to high speed gear.
H" (or low speed drive stage "L"), the speed increase (or deceleration) instruction lamp 77 (or 78) does not flash.

When the rotational speed of the handling cylinder falls 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 period of time to slightly decrease (or increase) the engine speed, and then, after waiting for a predetermined period of time ts (or t6) to elapse, the handling cylinder is rotated. Check the rotation speed and make sure that the handling cylinder rotation speed is the first high (or low).
When the rotational speed is within the rotational speed range d≦X<e (or b<x≦C), the shift motor 74 is driven to shift amplify (or downshift) the traveling speed stage of the main transmission. In this case, if the handling barrel rotational speed is in the first high rotational speed range d≦X<e, the accelerator motor 75 is driven for a predetermined period of time to increase the engine rotational speed. Even if the main transmission and engine speed are controlled in this way, if the handling barrel rotation speed is within the first high (or low) rotation speed range d≦X<e (or b<) (≦C), the specified Similar control is performed after waiting for time 17 (or te) to elapse. And the running speed stage of the main transmission is 4.
When the speed rF4j (or 1st speed r'FIJ) is reached, the handling cylinder rotation speed remains within the first high (or low) rotation speed range d≦X<e (or b< )(≦
C), the speed increase (or deceleration) instruction lamp 77 (or 7
8) flashes. This lamp 77 (or 78) is displayed when the sub-shift lever 95 is operated and the sub-shift lever switch 68 is switched, or when the sub-shift lever 95 is set to high speed gear "H" (
or low speed (rLJ), it does not blink.

When the rotational speed of the handling cylinder is within the appropriate range (c<X<d), the accelerator motor 75 is driven to rotate forward for a predetermined period of time to increase the engine rotational speed. If it is still within the appropriate range (C<X<d,) after the predetermined time t2, the accelerator motor 75 is further driven in the forward direction to increase the engine speed, and the regulator switch 69 is turned on. The engine speed is increased to the maximum speed and the work is carried out in this state (see Figure 9).

Therefore, the threshing operation is performed with the rotation 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.

Furthermore, when the engine speed is increased by a predetermined amount, if the handling cylinder speed increases and falls within the first high speed range, the above-mentioned control will be performed, and if possible, an upshift will be performed. , it is possible to increase the speed of the machine and make the threshing process even more efficient.

In addition, in controlling the vehicle speed and engine speed mentioned above,
After the main transmission is shifted up or down, the engine speed becomes abnormally low during driving for a predetermined period of time, or during a predetermined period of time after the engine speed is changed. If the range (X≦a) or the second screw 29 is clogged, the second rotation sensor 63
is turned on, as shown in FIG. 5, automatic control of vehicle speed and engine speed based on the rotation speed of the handling cylinder is not performed, and the shift motor 74 is driven in reverse to shift the main transmission 6 to the neutral gear "N". ” and stops the aircraft.

In addition, the amount of the second reduction substance becomes too large, and the second reduction sensor 6
4 is 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 rNJ and the aircraft stops traveling.

- When the reaping operation of the stroke is completed, the shell culm sensor 62 is turned off, and the control device 80 stores the running speed stage of the main transmission as Pm at the time when the shell culm sensor +62 is turned off, and also stores the running speed of the auxiliary transmission as Pm. Store the speed as Ps,
Automatic control based on the rotation speed of the handling cylinder is prohibited and the automatic lamp 76 is flashed. Then, a predetermined rotation operation is performed, and after the shell culm sensor 62 has been turned off and the rotation operation has been turned off for a predetermined period of time, the engine speed is controlled to be within the appropriate range (α-β). . This control is similar to the above-mentioned control to keep the engine speed within the appropriate range at the start of mowing,
The accelerator motor 75 is continuously driven so that the engine speed is within the appropriate range. This is because the husk remains in the threshing device at the start of the rotation, which adds a load to the handling barrel, and at the time of the rotation, the load for rotation (such as the load added when the running rollers are stopped) is also added. In order to add, the culm sensor 6
If the herring rotational speed is controlled immediately after 2 is turned off, the engine will be at high rotational speed, but after that the husk in the threshing device 3 will be threshed, the load on the handling barrel will be reduced, and the rotating operation will be completed. Since there is no accompanying load after that, the engine speed becomes extremely high, so the engine speed is adjusted to an appropriate range after the rotation operation is completed.

When the rotation operation is completed and the shell culm sensor 62 detects the conveyed shell culm, the automatic lamp 76 lights up, the accelerator motor 75 is driven forward for a predetermined time L2, and the engine speed is made slightly higher than the appropriate value. After the predetermined time t9 has elapsed,
In order to set the main transmission and sub-transmission to the optimum running speed,
A predetermined traveling speed step setting control is performed.

FIG. 8 is a flowchart of the traveling speed stage setting control.

First, the control device 80 determines whether or not the sub-transmission has been operated to shift, based on the detection result of the sub-transmission gear shifter 68 and the stored value Ps.
If they match, it is assumed that the sub-shift lever 95 has not been operated, and the traveling speed stage of the main transmission is set to the speed stage before the rotation. That is, the current traveling speed is determined from the output signal of the shift sensor +61, and if the current speed does not match the stored value Pm of the previous speed, the shift motor is changed so that the traveling speed matches the stored value Pm. 74. Then, when the running speed stage of the main gear becomes equal to that before rotation,
After waiting for the predetermined time t4 to elapse, automatic control of the vehicle speed and engine rotation speed based on the rotation speed of the handling cylinder is performed.

On the other hand, if the running speeds of the auxiliary transmission before and after the round do not match, the speed increase or deceleration instruction lamp 77 or 78 lights up and the running speed before the round is 4th gear rF4j or 1st gear. When the condition is "Fl", the traveling speed stage of the main transmission is set so that the traveling speed after entrainment is approximately equal to the traveling speed of the aircraft before entrainment. Table 2 shows the set speed stages of the main shift in this case.

Table 2: In other words, when the main transmission before the rotation is in the 4th gear "F4" and the auxiliary transmission is in the low-speed running gear rLJ, the auxiliary transmission after the rotation is in the middle-speed running gear rMJ. At times, the main transmission is set to 2nd gear "F2", and when the sub-transmission following the same is set to high speed traveling gear rHJ, the shift motor 74 is reversed so that the main transmission is set to 1st gear "F1". Driven. Also, the main transmission before the rotation is in the 4th gear “F4”.
'', and when the auxiliary transmission is in the middle speed gear "Mj" and the auxiliary transmission after rotation is in the high speed gear rHJ, the main transmission is in the first 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, When the main transmission is in the third gear "F3" and the sub-transmission after the same is in the low speed running gear r L J,
The main transmission is set to 4th gear rF4J. In addition, when the main transmission before the round is in the first gear "Fl" and the sub-transmission is in the middle-speed running gear rMJ, the sub-transmission after the round is in the low-speed running gear "I," At times, the main transmission is in third gear "F3".

When changing the running speed of the main transmission, if the speed before changing and the speed to be changed are two or more steps apart, the intermediate running speed is changed for a predetermined period of time tI.
The speed stage is sequentially changed while holding the speed for a period of O.

If the combination of the running gears of the main transmission and auxiliary transmission before the combination and the combination of the running gears of the auxiliary transmission after the same is other than the above-mentioned embodiment, the stored value Pm of the running speed of the main transmission is (Pm=0), and control is started at the travel speed set by the driver. The subsequent automatic control is the same as described above.

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

〔effect〕

According to the present invention, the traveling speed and engine speed of the aircraft are automatically controlled so that the handling barrel rotation speed is within the appropriate range, and when the engine speed is within the appropriate tightening adjustment, the engine speed is increased by a predetermined amount, If the rotation speed of the handling barrel remains within the appropriate range after a predetermined period of time has elapsed, the engine rotation speed is further increased by a predetermined amount, and the threshing process is performed with the engine rotation speed at its maximum, making the threshing process more expensive. This is done efficiently and maximizes the capabilities of the harvester.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective view of the appearance of the machine of the present invention, FIG. 2 is a partially cutaway vertical sectional view of the threshing device, and FIG. 3 is a diagram of the control system of the machine of the present invention. A schematic block diagram, FIGS. 4 to 8 are flowcharts for explaining the present invention in detail, and FIG. 9 is a time chart of a part thereof. 1... Running roller 3... Threshing device 6... Sub operation column 17... Handling cylinder 29... No. 2 screw 59... Handling cylinder sensor 60... Engine sensor 61... Shift sensor 62...Culm sensor 63
...Second rotation sensor 64...Second reduction sensor + 6
8...Sub-shift lever switch 73...Engine 7
4...Shift motor 75...Accelerator motor 76
...Auto run, b 77...Speed increase instruction lamp 78
...Deceleration instruction lamp 80...Control unit

Claims (1)

[Claims] 1. A detector for the rotation speed of the handling drum in the threshing device, a transmission that changes the traveling speed, an engine speed changer that changes the engine speed, and an appropriate rotation speed of the handling drum based on the detected rotation speed of the handling drum. means for automatically controlling the transmission or engine speed changer to keep the engine speed within the range; and means for controlling the engine speed changer to increase the engine speed by a predetermined amount when the detected handling cylinder speed is within the appropriate range. 1. A harvesting machine characterized by comprising: means for driving the harvester.