JP2000139170A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle easy for an operator to operate as much as possible by arranging a hand-operating type information-inputting part for inputting necessary information for its control and a hand-operating lever for traveling the vehicle body, reasonably at positions close to its operating seat. SOLUTION: This working vehicle is provided by installing a hand-operating type information-inputting part MU1 for inputting necessary information for executing the control for a work as arranged closely to an operating seat 31A in an operating part 31, and also a hand-operating lever 7 for traveling the vehicle body in a state of extending from a farther side than the position of the information-inputting part MU1 based on the operating seat 31 to the upper direction of the information-inputting part MU1 so as to position its lever grip part 7A in the upper direction of the information-inputting part MU1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle provided with a manually operated information input section for inputting information necessary for executing work control.

[0002]

2. Description of the Related Art In the above-mentioned work vehicle, in a combine for reaping work (a reaper work vehicle) as one example, a vehicle body is driven by operating a manual operation lever for running the vehicle body such as a shift lever. Controls for work such as cutting height control to maintain the cutting height at an appropriate height, threshing control to properly perform threshing, and control of a discharge device that discharges grains after threshing from the storage tank to the outside. Information necessary for execution (a control start command, a control target value, and the like) is input by a manually operated information input unit including a manual switch, a volume, and the like. Conventionally, the manual operation type information input unit and the manual operation lever for traveling the vehicle body are arranged such that a manual operation lever (for example, a shift lever) is located on a side near a seat at a side portion of a driver seat. A manually operated information input unit (each operation switch) may be disposed at a position far from the seat (for example, see Japanese Patent Application Laid-Open No. H10-84748), or a manually operated information input unit may be located near the driver's seat. On the side, manual operation levers were arranged at positions far from the seat.

[0003]

In the above-mentioned prior art, the manual operation lever for driving the vehicle body, which is arranged near the driver's seat, is in a state where it can be easily operated by the driver. The part is far from the seat, and it is difficult to operate because the manual operation lever is in front, and in the latter,
Conversely, there is a problem that the manually operated information input unit is easy to operate, but the manually operated lever is difficult to operate.

The present invention has been made in view of the above circumstances, and has as its object to provide a manually operated information input unit;
By manually arranging the manual operation lever for traveling the vehicle body at a position close to the driver's seat, both the information input section and the manual operation lever can be easily operated by the driver.

[0005]

According to the first aspect of the present invention, a manually operable information input unit for inputting information necessary for executing work control is provided in the control unit in proximity to the driver's seat. An upper side of the information input unit from a side farther than a position of the information input unit with respect to a driver's seat such that a manually operated lever for traveling the vehicle body positions the lever grip unit above the information input unit. It is provided in a state extending toward. Therefore, the driver can operate the manually operated information input unit disposed in the vicinity of the driver's seat to input information necessary for executing work control with good operability, and to hinder the operation of the information input unit. In order to prevent the vehicle body from moving, the manual lever for vehicle body running extends from the side farther than the position of the information input unit with respect to the driver's seat toward the upper side of the information input unit, and The driver can operate the lever grip portion of the manual lever to perform the operation for traveling the vehicle body with good operability, so that the manually operated information input unit and the manually operated lever for traveling the vehicle body are By arranging them rationally at a position close to the driver's seat, it is possible to make the driver's operation as easy as possible.

According to a second aspect of the present invention, in the first aspect, the cutting unit for cutting the planted grain culm is located in front of the traveling vehicle body, and the threshing unit for threshing the cut grain culm cut by the cutting unit is provided. It is located on the rear side of the body of the reaping unit, and on the right side of this threshing unit,
A grain tank for storing the grain after threshing in the threshing unit is located, and the control unit is provided in a state in which the control unit is located in front of the grain tank, and a right front side of the driver's seat is provided. The information input unit and the manual operation lever are disposed on the left side of the driver's seat, and the steering operation of the traveling vehicle body and the lifting / lowering operation of the reaper are manually performed in front of the driver's seat. A single mowing operation tool is provided. Therefore, for example, in a harvesting / harvesting work vehicle such as a combine harvester, in order to improve the visibility on the front side in the harvesting operation, the control section is provided on the rear side of the harvesting section on the front right side of the traveling vehicle body on the front side of the grain tank. In this case, the driver located in the driver's seat operates the single reaping operation operating tool arranged in front of the seat with the right hand to instruct the steering operation of the traveling vehicle body and the raising / lowering operation of the reaping unit, A good controllability is ensured by operating the information input unit disposed on the left side for inputting control operation information and a manual operation lever for traveling the vehicle such as a shift lever with the left hand. Thus, the preferable means of claim 1 is obtained.

According to a third aspect, in the second aspect, a grain discharging device for discharging the grains stored in the grain tank to the outside is provided on the rear side of the vehicle body, and the grain discharging device is provided on the right side of the driver's seat. A grain discharging operation unit for commanding a grain discharging operation of the discharging device is provided. Therefore, while the operator located on the driver's seat faces the rear of the vehicle body and looks at the grain discharge device on the rear side of the vehicle body, the operator operates the grain discharge operation unit disposed on the right side of the seat, and the kernel of the grain discharge device is operated. Since the discharge operation is commanded, the worker can command the grain discharge operation with good operability by the operation unit rationally arranged near the seat in a state of avoiding the getting-in / out portion on the right front side of the seat, Thus, the preferable means of claim 2 is obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention applied to a combine as a work vehicle for reaping and harvesting will be described with reference to the drawings. As shown in FIGS. 1 to 3, the combine includes a pair of right and left crawler traveling devices 30.
A cutting unit 1 for cutting planted grain culms is attached to the front of a traveling vehicle body V equipped with a cutting and raising / lowering cylinder 5 so as to be vertically swingable around a horizontal axis X. And a threshing unit 2 for threshing the harvested stalks mowed by the reaping unit 1, and a grain after the threshing process is stored on the right side of the threshing unit 2. Each of the grain tanks 3 is provided, and the grain tank 3 is provided with an unloader 32 as a grain discharging device for discharging the stored grains to the outside. Further, the control unit 31
Is provided on the right side of the threshing unit 2 and in front of the grain tank 3.

As shown in FIG. 2, the cutting unit 1 has a weeding tool 33 attached to the tip, a grain stalk raising device 34, a cutting blade 35 for cutting the root of the raised grain stalk, and a cut portion. Auxiliary transport device 3 that collects and transports culms to the rear
7, a vertical transport device 36 for receiving the harvested culm on the tip side and transferring it to the feed chain 52 of the threshing unit 2. Also provided are an ultrasonic sensor S6 for detecting the height of the cutting unit 1 with respect to the ground, and a stock sensor S2 for turning on when the grain stem touches to detect that the cutting operation is being performed. Then, based on the information of the ultrasonic sensor S6, the cutting height control for controlling the operation of the cutting and lifting cylinder 5 is executed so that the ground height of the cutting unit 1 is maintained at the target set height.

The vertical transport device 36 (in FIG. 2, there is a part that is partially different from that in FIG. 1 in order to explain the function of the vertical transport device 36). It is composed of a stock feeder 36a for nipping and conveying, a head conveying device 36b for locking and conveying the front side of the grain culm, and a head guide plate 36c, and is swingable about the same axis as the swing axis X of the cutting unit 1. It is supported and is provided so as to be swingably adjustable by a handling depth motor M1, whereby the pinching point of the grain culm received from the auxiliary transport device 37 is changed in the culm length direction, and the handling depth in the threshing unit 2 is adjusted. It is configured to be able to. Also, in the transporting path of the harvested grain culm, it is juxtaposed at intervals in the culm length direction on the lower side in the conveying direction from the handling depth adjustment point by the handling depth motor M1 and swings when the grain culm contacts. Switch-type pair of tip sensors S8a, S8
b is provided. Then, the pair of head sensors S
The state in which the tip of the grain stem is located between 8a and S8b (the state in which the stock sensor S8b is on and the tip sensor S8a is off) is set as an appropriate handling depth state, and is maintained in the appropriate handling depth state. As described above, the depth control for controlling the operation of the depth motor M1 is executed.

As shown in FIG. 3, the second weeding tool 33 from the left as viewed from the front of the vehicle body includes a lateral body of the traveling car body V with respect to the grain train introduced between the plurality of weeding tools 33. In order to detect the position in the direction, a pair of left and right direction sensors S1 provided with a detection bar that swings toward the rear side of the vehicle body in contact with the grain culm is provided. Then, based on the information from the pair of direction sensors S1, the left and right steering for turning on / off the power transmission to the left and right crawler traveling devices 30 so that the traveling vehicle body V automatically travels along the planted grain culm. Clutch 20L, 20
R for operating the steering cylinders 9L and 9R (FIG. 19)
Direction control for controlling the operation of the ref. That is, since the traveling vehicle body V turns to the side of the left and right crawler traveling devices 30 to which power transmission has been cut off, if the traveling vehicle body V is displaced from an appropriate position, the crawler traveling device on the opposite side to the above-described displacement is displaced. The traveling direction is corrected by operating the steering cylinders 9L and 9R so as to cut off the power transmission to 30.

Each of the left and right crawler traveling units 30 has a left and right track frame 30d having a driving sprocket 30a, a tension wheel 30b, and a plurality of driven wheels 30c.
And the left and right track frames 30d
Is provided with a rolling cylinder 30e for individually driving the vehicle body V up and down, and a rolling sensor S4 for detecting the inclination of the vehicle body V with respect to the horizontal plane.
Is provided. And the rolling sensor S4
Based on the information of the left and right rolling cylinders 30e
Of the vehicle body V regardless of the state of the ground
Is automatically adjusted to a predetermined target attitude such as a horizontal attitude (horizontal control).

The unloader 32 has a discharge port 32a with a downward attitude at the tip end, and is supported by a support portion 32b with its base end side swingable up and down around a horizontal axis Z.
An unloader hydraulic cylinder 62 for raising and lowering the unloader 32 is provided, and the support portion 32b is pivotally supported by the traveling vehicle body V in a state where the unloader 32 can be turned around the vertical axis Y, and the unloader 32 is turned. Turning motor M3
Is provided. An unloader position sensor S3 composed of a potentiometer is provided to detect the turning position of the support portion 32b. FIG. 3 shows a state in which the unloader 32 has been moved to the storage home position during a mowing operation or the like.

As shown in FIG. 1, a bottom screw 3a is provided at the bottom of the grain tank 3 for transporting grains in the tank to the rear side, and is transported to the unloader 32 by the bottom screw 3a. And a horizontal screw 32c for conveying the grains conveyed by the vertical screw 32d toward the discharge port 32a. And the bottom screw 3a
And the vertical screw 32d, and the vertical screw 32d and the horizontal screw 32c are linked and connected by a bevel mechanism (not shown), and the power of the engine E disposed below the control unit 31 is discharged by a belt tension type discharger. The transmission is transmitted to the bottom screw 3a via the clutch CL, and the discharge clutch CL is configured to be turned on and off by the forward / reverse drive of the discharge motor M7.

The unloader position sensor S3
The operation of the unloader hydraulic cylinder 62, the turning motor M3, and the discharge motor M7 is controlled based on information such as a limit switch (not shown) for detecting a limit position of the ascending operation and the turning operation in the left-right direction. Unloader control is performed.

As shown in FIG. 4, the threshing unit 2 includes
A, a feed chain 52 that transports the stalks supplied from the reaper 1, a turtle 53 and a rocking sorter 5
4, a first port 55 for collecting kernels, and a second port 56 for recovering a mixture of kernels and straw waste.
Etc. are provided. Then, of the processed products threshed in the handling room A, the single-grained products are leaked to the sorting device B from the receiving net 57 provided at the lower part of the handling room A, and the other processed products are received by the receiving net 57. From the rear end to the sorting device B.

As shown in FIG. 2, a pinch rail 52a is disposed on the feed chain 52 so as to be opposed to the feed chain 52 in a state where the pinch rail 52a is pressed and urged toward the feed chain 52, and the feed chain 52 and the pinch rail 52a are driven to rotate. Thus, the base of the culm is held and transported. However, the holding rail portion located on the front side of the handling room A is configured to be movable to an upper position separated from the feed chain 52 by the rail lifting motor M2 or the like. Thereby, together with the normal state of threshing while nipping and transporting the cut culm on the lateral side of the handling room A, and when the culm length of the cut grain culm is extremely short, the entire culm of the grain culm is transferred to the handling room A. It is configured such that rail control for driving the rail raising motor M2 and the like can be executed so as to be turned on.

The swinging sorting plate 54 of the sorting device B is
3 is provided with a Glen pan 58 located above, a chaff sheave 59 located behind, and a Glen sheave 61 located below. The chaff sheave 59 is composed of a plurality of strip-shaped members juxtaposed in the processing object transfer direction, and an interval between adjacent strip-shaped members (chaff opening degree) is changed by a chaff opening degree adjusting motor M4. S10 is a sheave sensor that detects the thickness of the processed material on the swing sorting plate 54.

The turret 53 is used to blow off the straw chips on the oscillating sorting plate 54, and is operated by opening and closing the fan case cover 53a on the rear side by the turtle wind adjusting motor M5. The wind force (Tumi wind force) exerted on the processed material on 54 is changed in such a state that the larger the degree of opening of the cover, the smaller the forward wind force and the smaller the Toumi wind force. That is, the sorting wind in the chaff sheave 59 is generated by the torsion 53.

Then, in order that the sorting process in the sorting device B is performed properly, the sorting process is performed in accordance with the amount of the material to be leaked from the handling room A.
Threshing control is performed to control the operation of the chaff opening adjustment motor M4 so as to maintain the chaff opening at the target value, and to control the operation of the toumi wind power adjustment motor M5 to maintain the tofu wind power at the target value. Here, when the traveling speed increases, the amount of cut corn culm supplied to the handling room A increases, and the amount of the processed material leaking from the handling room A increases. Therefore, it is determined based on the information of the vehicle speed sensor S7 described later. The target value of the chaff opening and the target wind power is controlled to increase as the grain culm supply amount to the handling room A increases.

Next, a power transmission system is shown in FIG. The output of the engine E mounted on the traveling vehicle V is the threshing clutch 37
To the threshing unit 2 via the traveling clutch 38 and the continuously variable transmission 39.
0 is transmitted to the mission section 40. Mission section 40
Is transmitted to the crawler traveling device 30 via an auxiliary transmission (not shown) provided in the transmission section 40 and transmitted to the reaper 1 via the reaping clutch 47. S9 is a threshing switch for detecting the on / off state of the threshing clutch 37, and S7 is a transmission unit 40.
S5 is a vehicle speed sensor for detecting the traveling speed based on the input rotation speed to the engine, and S5 is an electromagnetic pickup type engine rotation speed sensor. Further, a shift motor M6 for shifting the continuously variable transmission 39 and a hydraulic clutch (not shown) for shifting the auxiliary transmission are provided. Here, since the engine speed decreases as the load on the engine E increases, the load on the engine E is determined based on the amount of decrease in the engine speed from the engine speed under no load (reference speed). Then, in order to use the capacity of the engine E as effectively as possible, under the condition that the running speed detected by the vehicle speed sensor S7 does not exceed the set upper limit speed, based on the information of the engine speed sensor S5. The vehicle speed control for controlling the operation of the speed change motor M6 is executed so that the determined engine load is maintained in an appropriate range.

Next, information for inputting information such as start commands and control target values for the various controls described above (cutting height control, depth control, direction control, horizontal control, unloader control, rail control, threshing control, etc.). Input means and various information display means will be described.

As shown in FIGS. 6 and 7, on the left side of the driver's seat 31A of the control unit 31, in order from the side closer to the seat, a basic switch module MU1 (see FIG. 8), and a horizontal control switch module MU3 (see FIG. 10) having a horizontal control start switch, a manual operation switch, and the like.
Further, the manual shift lever 7 for shifting the running speed is provided with the grip 7A and the basic switch module MU1.
It is provided in a state of being located above. The speed change motor M6 is driven in accordance with the operation of the manual speed change lever 7. In other words, a manually operable information input unit for inputting information necessary for executing work control is configured by the basic switch module MU1, and is provided in the control unit 31 so as to be disposed adjacent to the left side of the driver's seat 31A. A side farther than the position of the basic switch module MU1 with respect to the driver's seat 31A such that the manual shift lever 7 as a manual operation lever for traveling the vehicle body positions the lever grip 7A above the basic switch module MU1. And is disposed on the left side of the driver's seat 31A in a state of extending upward from the basic switch module MU1.

On the other hand, a loading / unloading section 31B is provided on the right front side of the driver's seat 31A, and an unloader switch provided on the right side of the driver's seat 31A with a switch for operating the unloader 32 such as turning and lifting / lowering. Module MU2
(See FIG. 9). That is, unloader 3
The grain discharging operation unit for instructing the second grain discharging operation is constituted by the unloader switch module MU2.

In front of the driver's seat 31A of the maneuvering section 31, a mowing lift lever for manually raising and lowering the mowing section 1 and a steering lever for manually turning the traveling vehicle body V to the left and right are configured. Cross-operated cutting height steering lever 8
Is provided. That is, a single mowing operation tool for manually instructing the steering operation of the traveling vehicle body V and the raising / lowering operation of the mowing unit 1 is constituted by the mowing height steering lever 8. When the lever 8 is pivoted rearward, the reaper 1 is raised, while when the lever 8 is pivoted forward, the reaper 1 is lowered. On the other hand, when the swing operation is performed to the right, the vehicle body turns right. In order to detect the amount of swinging operation of the cutting height steering lever 8 in each direction of the cutting elevation and the steering operation, the cutting elevation detection sensors S12 each constituted by a potentiometer.
And a steering operation detection sensor S13. A display module MU4 (see FIG. 11) for displaying various information is provided on the left front panel of the control unit 31.

The basic switch module MU1 includes:
As shown in FIG. 8, an operation unit 41 for threshing and handling depth control, an operation unit for vehicle speed control 42, an operation unit for direction control 43, an operation unit for cutting height control 44, an operation unit for rail control 45 and a spare operation unit 46 are provided. The spare operation unit 46 is used as an operation unit when control other than the above is added.

In the threshing and handling depth control operation unit 41, one crop condition is selected from among a depth control start switch 41a configured as an illuminated push button switch, wheat, rice and wet. Crop switching volume 41b,
A chaff volume 41c for adjusting the chaff opening,
And toumi volume 4 for adjusting toumi wind
1d is integrally formed. Here, in the one crop condition, as the chuff volume 41c is turned to the open side, the control state of the chaff opening degree with respect to the cereal culm supply amount is changed and adjusted as a whole to the open side, and the tomato volume 41c is adjusted.
As d is turned to the higher side, the control state of the wind power of the turtle with respect to the grain culm supply amount is changed and adjusted as a whole to the higher side. or,
By the selection of crop conditions, the control state of the chaff opening degree is changed and adjusted to the open side as a whole in the order of wheat, rice, wetness,
The control state of the wind power is changed and adjusted as a whole to the strong side.

The vehicle speed control operation unit 42 is integrally formed with a vehicle speed control start switch 42a formed as an illuminated push button switch and a vehicle speed limit volume 42b for setting an upper limit vehicle speed. The direction control operation unit 43 is integrally formed with a direction control start switch 43a configured as an illuminated push button switch and a turning force switching volume 43b for adjusting the turning force. Here, when the turning force switching volume 43b is turned to the large side, the steering cylinder 9 driven by the duty is driven.
The ratio of the ON time to the OFF time of L and 9R (the duty ratio) is changed to a large side to increase the turning force, and when the L and 9R are turned to a small side, the duty ratio is changed to a small side and the turning force is reduced. The cutting height control operating unit 44 is integrally formed with a cutting height control start switch 44a configured as an illuminated push button switch and a cutting height adjustment volume 44b for setting a target cutting height. ing. The rail control operation unit 45 is integrally formed with a rail control start switch 45a and a rail control lamp 45b for displaying an on / off state of the rail control. FIG. 8 shows the chaff volume 41c and the toumi volume 41.
d, the switching by the vehicle speed limiting volume 42b, the turning force switching volume 43b, and the cutting height adjustment volume 44b can be adjusted in seven stages.

The plurality of operation units 42 to
Numerals 45 are provided so as to be selectively attachable to the basic switch module MU1, respectively, and are configured so that their positions can be freely changed. In FIG. 8B, the operation units 42 and 44 for vehicle speed control and cutting height control are assembled.
Operation units 43 and 4 for direction control and rail control
5 is not assembled. The presence / absence of attachment of each of these operation units is automatically determined as described later.

As shown in FIG. 9, the unloader switch module MU2 includes an automatic switch 50a for automatically operating the unloader 32, a stop switch 50b for stopping the unloader 32, and a cross operation key. A manual operation switch 50c for manually ascending, descending, turning right and turning left, and a fir discharge switch 50 configured as an illuminated push button switch.
d, tank open switch 50e, tank close switch 50
f, and the target stop position of the unloader 32 is
A stop position selection volume 50g selected from the rear side of the vehicle body and the right side of the vehicle body is integrally formed.

The horizontal control switch module MU3 includes:
As shown in FIGS. 10 and 29, an automatic switch 6 for starting horizontal control, which is configured as an illuminated push button switch,
0a, a horizontal mode changeover switch 60b configured as an illuminated push button switch for switching a horizontal control mode between an up reference and a down reference, a reverse vehicle body lift switch 60c configured as an illuminated push button switch, a cross control key And a manual operation switch 60 for manually operating the body posture to the right-up, right-down, left-up, and left-down states.
d and a horizontal adjustment volume 60e for setting the target tilt state when the horizontal control is activated (automatic mode).

As shown in FIG. 11, the display module MU4 includes a pointer-type fuel meter 70a, a pointer-type tachometer 70b, a water temperature meter 70c, and the grain tank 3.
There are provided a fir LCD 70d for displaying the amount of fir in the car, a main LCD 70e for displaying various messages, graphs, and the like. Further, left and right blinker lamps 70f, and various types of charging, charging, brake, oil, and checking are provided. 70g, and a sub-transmission lamp 70h for displaying whether the switching state of the sub-transmission is in a high-speed, normal, lodging, or neutral state. In the figure, a bar graph showing the load level of the engine is shown on the upper side of the main LCD 70e, and a bar graph showing the amount of the processed material on the swing sorting plate 54 of the threshing unit 2 detected by the sheave sensor S10. What is displayed is illustrated on the lower side.

Then, as shown in FIGS. 12 and 13,
Central control unit C for centrally executing control of the entire combine
U and a plurality of terminal control units LU (LU1) which are distributed and arranged in each part of the vehicle body such as the reaping unit 1, the threshing unit 2, the tank unit (configured by the grain tank 3 and the unloader 32), and the machine unit 4.
To LU5) and MU (MU1 to MU4) are connected to the communication line T.
1 and T2 so as to be communicable with each other. Further, a working actuator AK, a sensor SW for detecting control information, and a display means HS for displaying information are connected to any one of the plurality of terminal control units LU and MU, and are connected thereto. It is configured to input and output signals to and from the terminal control units LU and MU.

Here, the actuators AK include the hydraulic cylinders, electric motors, and the like for operating the working devices provided in each part of the vehicle body, and the sensors SW include:
It is composed of a switch for detecting various control information as ON / OFF binary information. Specifically, as illustrated in FIG. 12, from the terminal control unit LU3 arranged in the reaper 1,
A drive signal for the handling depth motor M1 is output, and the direction sensor S1, the stock sensor S2, and the tip sensors S8a, S8b are sent to the terminal control unit LU3.
Is input. Further, from the terminal control unit LU4 arranged in the threshing unit 2, the rail raising motor M2,
A drive signal is output to the chaff opening degree adjustment motor M4 and the turtle wind adjustment motor M5.

Also, of the two terminal control units LU1 and LU2 arranged in the main unit 4, one terminal control unit LU2
A drive signal for the speed change motor M6 is output, and a signal of the threshing switch S9 and a sub speed change switch (not shown) for switching the speed change state of the auxiliary speed change device are input to the terminal control unit LU2. The terminal control unit LU1 is configured as a terminal control unit dedicated to hydraulic output,
From the terminal control unit LU1, the cutting and lifting cylinder 5
And drive signals for the solenoids for driving the steering cylinders 9L and 9R, the rolling cylinder 30e, and the unloader hydraulic cylinder 62 are output. In addition, a drive signal for the turning motor M3 and the discharge motor M7 is output from the terminal control unit LU5 disposed in the tank unit, and stored in the grain tank 3 in the terminal control unit LU5. The detection signal of the fir sensor S11 for detecting the amount of the grain present is input.

The display lamps provided in each of the switch modules MU1-3 and the meters, LCD displays and lamps provided in the display module MU4 correspond to the display means HS.

The central control unit CU has the communication lines T1,
As T2, a high-speed communication line T1 for high-speed communication and a low-speed communication line T2 for low-speed communication are connected, and among a plurality of terminal control units LU and MU, high-speed communication processing for driving actuators AK. Terminal control units (hereinafter referred to as high-speed terminal units) LU1 to LU5 for inputting / outputting a signal for which a high-speed communication process is not required. MU1 to MU4 (that is, each of the switch modules MU1 to 3 and the display module MU4) are connected to the low-speed communication line T2.
That is, the output of the drive signal to the actuators AK and the input of the detection information from the sensors SW require high-speed processing in executing the control of each part of the vehicle body.
The high-speed terminals LU1 to LU5 to which the actuators AK and the sensors SW are connected are connected to a high-speed communication line T1. On the other hand, the switch module MU1
Since the control information and the drive signal for display to the display means HS, which are manually input in the steps (1) to (3), do not require high-speed processing to execute the control of each part of the vehicle body, each switch module MU1 is not required. 3 and the display module MU4 are connected to the low-speed communication line T2.

As shown in FIG. 13, the central control unit CU is provided with a microcomputer CPU for control processing, and the microcomputer CPU is connected to the high-speed communication line T1.
A gate array GA1 is provided as a communication IC on the central side for relaying data transfer between the two. here,
The microcomputer CPU and the gate array GA1
Is transmitted and received via an 8-bit bus line. On the other hand, each high-speed terminal unit LU1-5 connected to the high-speed communication line T1 has a gate as a terminal-side communication IC that relays data exchange between the sensors SW and actuators AK and the high-speed communication line T1. An array GA2 is provided.

The control microcomputer C
The PU receives an analog input signal from an analog sensor that detects continuously changing information, such as a potentiometer, and a pulse input signal from a pulse sensor that detects the number of revolutions and the like via a signal processing circuit. Input port Po
A drive signal to the engine stop solenoid SOLe for inputting to rt1 and rt2 and for stopping the engine by shutting off the fuel supply to the engine E is output from the output port Port4. Here, as the analog input signal, the unloader position sensor S
3, the rolling sensor S4, the ultrasonic sensor S
6. Each detection signal from the sheave sensor S10, the cutting and lifting detection sensor S12, and the steering operation detection sensor S13 is input, and a detection signal from the vehicle speed sensor S7 is input as the pulse input signal. Signal of the main switch MW is input.

Also, the control microcomputer C
A non-volatile memory MEM such as an E2 ROM is connected to the PU, and various error information and the like are stored in the memory MEM. In the drawing, PS1 is a DC voltage source that supplies a power supply voltage and a reset signal when the power is turned on to the microcomputer CPU, the gate array GA1, and the like.

As shown in FIG. 13, each high-speed terminal unit L
Four harnesses AD1 to AD4 for generating an address signal for U1 to U5 are provided by combining a low-level voltage harness connected to the ground and a non-connected harness, and the harnesses AD1 to 4 and the sensors SW And a connector CN integrally formed with the actuators AK
Is connected to each of the high-speed terminal units LU1 to LU5. The harnesses AD1 to AD4 are connected to address setting external terminals A0 to A3 of the gate array GA2, and
A low-level voltage signal is supplied from the W-level voltage harness, and a high-level voltage signal that is pulled up to the power supply side inside the gate array GA2 is supplied to the unconnected harness. Each address is set. In the example of FIG. 13, the high-speed terminal unit LU3 is configured such that all of the external terminals A0 to A3 are LO
It is at the W level and set as address 0. The sensors SW and the actuators AK are connected to an input / output port of the gate array GA2 via a signal processing circuit and a drive circuit, respectively. In the drawing, PS2 is a DC voltage source that supplies a power supply voltage to the gate array GA2 and the like.

The high-speed communication line T1 is, for example, RS485
As shown in FIG. 13, each gate array GA1 is connected to a contact between the two-wire communication line Ln and the communication line Ln in the central control unit CU and each of the high-speed terminals LU1 to LU5. And the transmission data received from RS
485, etc., and converts the signal into a signal conforming to the communication line Ln.
While the signal on the communication line Ln is input,
A communication driver DR for outputting the received data to each of the gate arrays GA1 and GA2 is provided.

The gate array GA1 on the center side and the gate array GA2 on the terminal side are configured to switch the mode of the gate array GA formed on the communication IC having the same specifications. Hereinafter, a specific description will be given based on FIG.

As shown in FIG. 14A, when the MODE terminal is set to the LOW level, the internal circuit of the gate array GA is switched to the master mode in which the internal circuit functions as the center gate array GA1.
The gate array GA includes an input / output buffer 11 for holding data input / output via the CPU and the bus line, a transmission buffer 13 for holding parallel data for transmission from the input / output buffer 11, and a transmission buffer 13 for the transmission buffer 13. P / S for converting parallel data into serial data
A communication control circuit 16 for transmitting the serial data from the P / S converter 14 with CRC data for error detection from a CRC generator 15 as transmission data; S / P converter 18 for serial-to-parallel conversion, error detector 17 for checking the received serial data for CRC and the like to detect the presence or absence of a communication error, and parallel data and error detector from S / P converter 18 A reception buffer 19 for holding the error data from 17 and outputting it to the input / output buffer 11, and an R / W (read / write) signal and an STB (data strobe) signal, which are control signals for data input / output, are input from the CPU. Interrupt to CPU
The configuration includes a CPU I / F unit 12 that outputs a T signal.

The gate array GA is shown in FIG.
As shown in (b), when the MODE terminal is set to the HIGH level, the internal circuit is switched to the slave mode functioning as the gate array GA2 on the terminal side. In this slave mode, the gate array GA includes the sensors SW and the actuators AK. An input / output port 21 for inputting / outputting data to / from the input / output port; a transmission buffer 13 for holding detection signals from the sensors SW input via the input / output port 21 as parallel data; To convert serial data into serial data
An S conversion unit 14, a communication control circuit 16 for transmitting the serial data from the P / S conversion unit 14 plus CRC data for error detection from a CRC generation unit 15 as transmission data, An S / P converter 18 for converting the received serial data into a CRC and an address and detecting the presence or absence of a communication error;
The parallel data and error detector 17 from the converter 18
And a reception buffer 19 for holding the error data from the I / O port 21 and outputting it to the input / output port 21, and an address setting unit 22 for setting an address for each of the high-speed terminal units LU1 to LU5.

The input / output port 21 is composed of three ports PA, PB and PC each having 8 bits. The input / output buffer 11 in the master mode is connected to the port PB of the input / output port 21 in the slave mode. It is shared.

Then, the central control unit CU performs high-speed communication processing between the high-speed terminal units LU1 to LU5 connected to the high-speed communication line T1 via the gate arrays GA1 and GA2 and the high-speed communication line T1. Is configured to execute. More specifically, as shown in FIG. 15, the central control unit CU specifies an address set for each of the high-speed terminal units LU1 to LU5, and uses the polling selecting method to specify each of the high-speed terminal units LU1 to LU5. And multiplex communication. That is, the microcomputer CPU of the central control unit CU
A request signal (data input of each sensor SW or output request to each actuator AK) to each of the high-speed terminal units LU1 to 5 is output to the gate array GA1 by a transmission interrupt process at a set time interval, and each of the high-speed terminal units is output. Gate array GA receiving return signals (input data or ACK data of each sensor SW) from LUs 1 to 5
In response to the reception interrupt process started by the interrupt signal from No. 1, return signals from the high-speed terminal units LU1 to LU5 are received. The set time interval is set so that communication with all the high-speed terminal units LU1 to LU5 can be performed at the set polling cycle Tp (for example, 5 ms).

The microcomputer CPU of the central control unit CU has a serial communication interface function as a standard function. On the other hand, as shown in FIG. 17 and FIG.
The controller 29 for input / output signal processing provided in
Similarly, it is composed of a one-chip microcomputer having a serial communication interface function as a standard function.

In the basic switch module MU1, as shown in FIG. 27, each of the operation units 42 to 45 other than the operation unit 41 for threshing / handling depth control provided in a fixed state has its own and other units. Is input to the controller 29 via each connection connector CNN and the signal line SL in a state where the operation unit is identified. That is, the plurality of signal lines SL are divided into lines SL1 to SL4 dedicated to signal input from each operation unit, and the connection connectors CNN of each unit are connected to the lines SL1 to SL4 assigned to themselves among the signal lines SL. It is configured to be connected to. FIG. 28 illustrates the case of the vehicle speed control operation unit section 42. And the controller 29
Is configured to execute communication processing of transmitting information input from each of the operation units 42 to 45 to the central control unit CU while identifying each of the operation units 42 to 45.

The low-speed communication line T2 is connected to the high-speed communication line T
1, the communication line Ln ′ is configured using, for example, the RS485 standard, and as shown in FIG.
And the transmission data received from the CPU of the central control unit CU and each controller 29 is transmitted to each contact between the CPU of the central control unit CU and the communication line Ln 'in each of the modules MU1 to MU4.
485, etc., and converts the signal to a signal conforming to the standard.
A communication driver DR 'is provided for outputting a signal on the communication line Ln' and outputting the received data to the CPU of the central control unit CU and each controller 29 while outputting the signal on the communication line Ln '.

The microcomputer C on the center side
Using both the serial communication interface functions provided in the PU and the controller 29 on each module side, the central control unit CU directly performs low-speed communication processing with each of the modules MU1 to MU4 via the low-speed communication line T2. Is configured to execute. Specifically, as shown in FIG. 16, the central control unit CU
The data from each module MU1 to MU4 (data of each manual switch and adjustment volume) are sequentially specified by the addresses of U1 to U4 by the polling selecting method.
And outputs data (display data of each lamp and display unit) to each of the modules MU1 to MU4. That is, the microcomputer CPU of the central control unit CU
A request signal is transmitted to each of the modules MU1 to MU4 by a transmission interrupt process at a set time interval.
Upon receiving a reply signal from each of the terminal control units LU1 to LU5, a reception interrupt is activated, and a reply signal from each of the modules MU1 to MU4 is received in the reception interrupt processing.
If the timing of the communication process on the low-speed communication line T2 and the timing of the communication process on the high-speed communication line T2 are simultaneous, the communication process on the high-speed communication line T2 is executed with priority. Here, it takes about 15 ms to transmit a request signal to one of the modules MU1 to MU4 and to receive a response signal from the module MU1 to MU4, and perform communication to all of the four modules MU1 to MU4. The set time interval is set so as to be executed within a predetermined time (maximum 60 ms).

As shown in FIG. 17, in each of the switch modules MU1 to MU3, the controller 2 of each module
Numeral 9 inputs the state of each manual switch as a binary (ON / OFF) digital signal, inputs the operation state of each adjustment volume as an analog signal, and performs AD conversion processing to 8-bit digital data. On the other hand, the controller 29 outputs a drive signal to each lamp based on the display data transmitted from the central control unit CU to perform a display operation.

As shown in FIG. 18, in the display module MU4, the controller 29 sends to the controller 29 a detection signal from a fuel (fuel) sensor, a water temperature sensor, the engine speed sensor S5, an oil switch, and an alternator. And the output voltage is input, and the controller 29
Based on these input signals and display data transmitted from the central control unit CU, a fuel meter 70a, a tachometer 70b, a water temperature meter 70c, a fir LCD 70d, a main LC
D70e, sub transmission lamp 70h, and alarm lamp 70
The check lamp of g is operated for display. The controller 29 transmits detection information from the engine speed sensor S5, the fuel sensor, the water temperature sensor, and the like in response to a transmission request from the central control unit CU. On the other hand, the left and right turn signal lamps 70f are turned on by turning on the respective turn signal switches, the charge lamps of the alarm lamps 70g are turned off by the output voltage from the alternator, and the brake lights are turned on by the turn on operation of the brake switch. The oil lamp is turned on by turning on the oil switch.

Then, the central control unit CU includes a terminal control unit L
U, MU (each high-speed terminal unit LU1-5 and each module M
U1 to 4), the appropriate drive contents for all the actuators AK are determined based on the input data from the sensors SW and the input units from the respective operation units, and the appropriate drive contents are used as control data for the actuators AK. Is transmitted to the connected high-speed terminals LU1 to LU5, while the high-speed terminals L to which the actuators AK are connected.
U1 to U5 are configured to output drive signals to the actuators AK based on the control data received from the central control unit CU.

Next, as a specific example of the drive control of the actuators AK, a high-speed terminal LU1 provided in the main unit 4 will be described.
A description will be given of a drive configuration for the cutting and raising / lowering cylinder 5 and a pair of left and right steering cylinders 9L and 9R. As shown in FIG.
Is supplied with hydraulic oil from a three-position switching hydraulic control valve 6 operated by a pair of solenoids L1 and L2. The drive terminals (one end) of the solenoids L1 and L2 are connected to the collector terminals of the drive transistors Tr1 and Tr2, respectively. The outputs of the two AND circuits 25 and 26 are connected to the respective bases of the transistors Tr1 and Tr2, and one input side of each of the AND circuits 25 and 26 is connected to the port output terminals a and b of the gate array GA2. The other input side is connected to the collector terminals of the transistors Tr2 and Tr1 opposite to the transistors Tr1 and Tr2 to which the outputs of the AND circuits 25 and 26 are connected. Thereby, the transistors Tr1 and Tr
2 are not turned on at the same time, and solenoids L1 and L
2 is driven in accordance with the output of the port output terminals a and b. However, the hydraulic control valve 6
Is biased to return to the center position when neither of the solenoids L1 and L2 is driven.

On the other hand, as shown in FIG. 20, the left and right steering cylinders 9L, 9R are connected to a pair of solenoids L3, L4.
Pressure oil is supplied from a three-position switching type hydraulic control valve 10 that is operated by the controller, and the drive terminals (one end) of the solenoids L3 and L4 are connected to the collector terminals of the drive transistors Tr3 and Tr4, respectively. I have. Two AND circuits 27 and 2 are provided at each base of the transistors Tr3 and Tr4.
8 are connected, one input side of each AND circuit 27, 28 is connected to the port output terminal c, d of the gate array GA2, and the other input side is each AND circuit 2
Transistor Tr to which outputs of 7, 28 are connected
Transistors Tr4 and Tr3 opposite to Tr3 and Tr4
Connected to the collector terminal. Thus, the transistors Tr3 and Tr4 are not turned on at the same time, and one of the solenoids L3 and L4 is driven according to the output of the port output terminals c and d. However, when none of the solenoids L3 and L4 is driven, the hydraulic control valve 10 is biased to return to the center position.

In the above configuration, the central control unit CU
By communication with the basic switch module MU1,
When it is determined that the start switch 44a of the cutting height control provided in the cutting height control operation unit 44 is on, the target height information input by the cutting height adjustment volume 44b and the ultrasonic sensor S6. The proper driving content for the cutting elevating cylinder 5 for maintaining the mowing height at the target height is determined based on the ground height information, and the mowing elevating cylinder 5 is connected with the proper driving content as control data. It is transmitted to the high-speed terminal unit LU1. Then, the high-speed terminal unit LU1 outputs the HI signal from one of the port output terminals a and b of the gate array GA2 according to the received control data.
A GH signal is output from the other, and a LOW signal is output from the other to drive one of the solenoids L1 and L2, thereby causing the mowing cylinder 5 to move up and down.

Similarly to the above, when the central control unit CU determines that the direction control start switch 43a provided in the direction control operation unit unit 43 is on by communication with the basic switch module MU1. Based on the ON / OFF information of each of the direction sensors S1 and S2 received from the high-speed terminal unit LU3 arranged in the mowing unit 1, the combiner adjusts the turning force set by the turning force switching volume 43b while combining. Is determined for the pair of left and right steering cylinders 9L and 9R for causing the vehicle to travel along the planted grain culm row, and the appropriate drive content is used as control data to control the speed of the steering cylinders 9L and 9R. It is transmitted to the terminal unit LU1. Then, the high-speed terminal unit LU1
Is the gate array GA according to the received control data.
A HIGH signal from one of the port output terminals c and d of
The other side outputs a LOW signal to output the solenoids L3 and L
4 to drive one of the pair of steering cylinders 9L and 9R. As a result, the vehicle body is steered to the operated steering cylinder 9L, 9R side (for example, to the left if the left steering cylinder 9L is operated).

The central control unit CU includes a terminal control unit LU,
MU (each high-speed terminal unit LU1-5 and each module MU1
4) determining the proper display contents to be displayed on the display means HS based on the input data from the sensors SW and the input units from the respective operation units, and using the display contents as display data. The terminal control units MU1 to MU4 connected to the HS are connected to the terminal control units MU1 to MU4, and the terminal control units MU1 to MU4 to which the display unit HS is connected are based on the display data received from the central control unit CU. It is configured to output a drive signal to the display means HS.

More specifically, the case of the cutting height control will be described. The central control unit CU checks the ON state of the cutting height control start switch 44a based on the data received from the basic switch module MU1. Command data for turning on the start switch 44a configured as an illuminated switch is transmitted to the MU1, and the main L is transmitted to the display module MU4.
A display command for displaying a cutting height control activation message is transmitted to the CD 70e. And the basic switch module MU
1 turns on the cutting height control start switch 44a in accordance with the lighting command data received from the central control unit CU, and the display module MU4 controls the main LCD 70e according to the display command received from the central control unit CU. The message "Cut height automatic [on]" is sent for a predetermined time (for example, 5
Display for seconds). When the start switch 44a for cutting height control is turned off, a message of "cutting height automatic [off]" is displayed on the main LCD 70e for a predetermined time (for example, 5 seconds).
When the target height information is changed by operating the cutting height adjustment volume 44b, the central control unit C is displayed.
Based on the communication between U and the display module MU4, the value of the target cutting height changed by the cutting height adjustment volume 44b is displayed as a bar graph on the main LCD 70e.

Similarly to the above, in the case of directional control,
The central control unit CU includes the basic switch module MU1.
Start switch 4 for direction control according to the received data from
When the ON state of the switch 3a is confirmed, command data for turning on the start switch 43a configured as an illuminated switch is transmitted to the basic switch module MU1, and the main LCD 70 is transmitted to the display module MU4.
A display command for displaying a direction control activation message is transmitted to e. Then, the basic switch module MU1 turns on the start switch 43a of the direction control according to the lighting command data received from the central control unit CU, and the display module MU4 operates according to the display command data received from the central control unit CU. On the main LCD 70e, a message of "direction automatic [on]" is displayed for a predetermined time (for example, 5 seconds). When the direction control start switch 43a is turned off, a message of "direction automatic [off]" is displayed on the main LCD 70e for a predetermined time (for example, 5 seconds).
When the information of the turning force is changed by operating the turning force switching volume 43b, the central control unit C is displayed.
Based on the communication between U and the display module MU4, the value of the turning force changed by the turning force switching volume 43b is displayed on the main LCD 70e as numerical information.

Next, a control operation in the central control unit CU will be described based on flowcharts shown in FIGS. When the main switch MW is turned on and the power is turned on to supply power to the central control unit CU (at this time, power is also supplied to each of the high-speed terminal units LU1 to LU5 and each of the modules MU1 to MU4). ) First, CP
The reset state of U is released and the control starts. Then, after performing the initialization processing, a set time interval (5
ms), the input processing of the analog signal from the analog sensor and the pulse signal from the pulse sensor is performed, and the operation of all the high-speed terminal units LU1 to LU5 and the modules MU1 to MU4 are stabilized after the main switch is turned on. The low-speed communication processing between the modules MU1 to MU4 is stopped until the time required for the operation (e.g., 250 ms) elapses, and the gate array GA1 is held in the reset state to communicate with the high-speed terminal units LU1 to LU5. The high-speed communication process is stopped (# 1 to # 6).

When the time necessary for stabilizing the operation of all the high-speed terminal units LU1 to LU5 and the modules MU1 to MU4 elapses, the CPU starts low-speed communication processing with each of the modules MU1 to MU4. Together with the gate array GA
1 is released, and high-speed communication processing with each of the high-speed terminal units LU1 to LU5 is started (# 7 to # 8). Here, the low-speed communication process and the high-speed communication process are performed by the interrupt process as described above. In the transmission interrupt process, as shown in FIG. 22, a request signal for input or output to each high-speed terminal LU and module MU is provided. In the reception interruption process, as shown in FIG. 23, a reception process for receiving a reply signal from each high-speed terminal LU and module MU is performed.

By the low-speed communication processing and the high-speed communication processing, the CPU sufficiently accumulates input data from the sensors SW, the manual switch, the adjustment volume, and the like, and confirms the start-up of the system. Of the actuators AK and display means H based on the
An arithmetic process for determining the display content of S is performed (# 5,
# 9). The drive data and display data obtained by this calculation are transmitted to each high-speed terminal unit LU and module MU in low-speed communication processing and high-speed communication processing.

When the main switch MW is turned off to stop the operation of the combine, the CPU stops the low-speed communication processing and resets the gate array GA1 to stop the high-speed communication processing (# 4, # 10 ~ #
11). Then, for 5 seconds after the main switch is turned off,
A solenoid for stopping the engine is driven to shut off fuel supply to the engine, and detection data, manual switches, and adjustments of the sensors in the terminal control units LU and MU stored in a memory such as a RAM in the CPU. A process of writing data such as volume (information of a control target and a control state) in the memory MEM is collectively performed, and after 5 seconds, the driving of the solenoid is stopped (# 12 to # 1).
5). The information on the control target and the control state written in the memory MEM is used as reference data at the start of the next control.

Next, a control operation in each of the high-speed terminal units LU1 to LU5 will be described based on a flowchart shown in FIG. First, it is determined whether or not it is a polling signal for itself based on an address in received data. If it is determined that the signal is a polling signal for itself, it is determined whether it is a request for input data from the sensors SW or an output request for the actuators AK. , In the case of an input request, the sensors S
While the detection signal from W is input and response sensor data is created based on the detection signal, in the case of an output request, the received data is output as a drive signal to the actuators AK and response ACK data is created. I do. Then, it transmits the created sensor data or ACK data to the central control unit CU.

Next, a control operation in each of the modules MU1 to MU4 will be described based on a flowchart shown in FIG. First, it is determined whether or not the polling signal is for itself based on the address in the received data. If it is determined that the polling signal is for itself, a request for input data from a manual switch, an adjustment volume, or the like, a display lamp, a meter, or an LCD Judge whether it is an output request to the display, and in the case of an input request, input a detection signal from a manual switch or an adjustment volume, etc., and create reply data based on it, while in the case of an output request, A drive signal is output to a display lamp, a meter, or an LCD display based on the received data, and ACK data for reply is created. Then, the created reply data is transmitted to the central control unit CU.

[Another Embodiment] Next, another embodiment will be described. In the above embodiment, the driver's seat 3 of the control unit 31
A manually operated information input unit disposed in proximity to 1A is configured by the basic switch module MU1, and as work controls, threshing / handling depth control, vehicle speed control, direction control, cutting height control, and rail control. Although the information necessary for the execution of the control is input, the control for the work is not limited to these controls, and one of these controls may be omitted or a control other than the above may be added. It may be.

In the above-described embodiment, the manual operation lever for running the vehicle body is constituted by the shift lever 7 for shifting the vehicle speed. However, the present invention is not limited to this. The clutch lever may be a steering lever that steers the vehicle body.

In the above embodiment, the work vehicle is configured as a harvesting work vehicle (such as a combine harvester), a cutting section is provided at the front of the vehicle body, and a threshing section is provided on the left side on the rear side of the body of the cutting section.
Although the control unit is arranged on the right side, the threshing unit may be arranged on the right side of the reaping unit behind the vehicle body, and the control unit may be arranged on the left side. When the control unit is arranged on the left side of the vehicle body, a manual operation lever for traveling the vehicle body and a manually operated information input unit are arranged on the right side of the driver's seat.

In the above embodiment, the grain discharging device is a cylindrical unloader 32 with a built-in screw for transporting the grain.
However, in addition to this, for example, it may be one that transports and discharges grains by wind power.

In the above embodiment, the work vehicle is configured as a work vehicle (combine combine) for mowing work.
It may be composed of various work vehicles other than the reaping work vehicle,
The harvesting vehicle is not limited to the combine.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a front side view of the combine.

FIG. 3 is a schematic plan view of the combine.

FIG. 4 is a longitudinal side view of the threshing unit.

FIG. 5 is a power transmission diagram of the combine.

FIG. 6 is a plan view of a control unit.

FIG. 7 is a rear view of the control unit.

FIG. 8 is a front view of a basic switch module.

FIG. 9 is a front view of the unloader switch module.

FIG. 10 is a front view of the horizontal control switch module.

FIG. 11 is a front view of a display module.

FIG. 12 is a block diagram showing the entire control configuration of the combine;

FIG. 13 is a circuit block diagram showing a main part of a combine control configuration.

FIG. 14 is a circuit diagram of a communication IC.

FIG. 15 is a waveform diagram of a polling selecting signal in high-speed communication processing.

FIG. 16 is a waveform diagram of a polling selecting signal in low-speed communication processing.

FIG. 17 is a block diagram showing a control configuration of a switch module.

FIG. 18 is a block diagram showing a control configuration of a display module.

FIG. 19 is a schematic plan view of the front side of the combine.

FIG. 20 is a circuit diagram showing a drive configuration for mowing up / down and steering operations.

FIG. 21 is a flowchart showing a control operation in a central control unit.

FIG. 22 is a flowchart showing a control operation in a central control unit.

FIG. 23 is a flowchart showing a control operation in a central control unit.

FIG. 24 is a flowchart showing a control operation in a terminal control unit.

FIG. 25 is a flowchart showing a control operation in a terminal control unit.

FIG. 26 is a circuit diagram showing a signal input configuration in a basic switch module.

FIG. 27 is a circuit diagram showing a signal input configuration in a basic switch module.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cutting unit 2 threshing unit 3 kernel tank 7 manual operation lever 7A lever grip unit 8 cutting operation tool 31 control unit 31A driver seat 31B getting on / off unit 32 kernel discharging device MU1 information input unit MU2 kernel discharging operating unit V Traveling body

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tokumune Ozaki 64 Ishizukita-cho, Sakai-shi, Osaka F-term in Kubota Sakai Works (reference) 2B074 AA02 AB01 AC02 AD05 AF02 AG03 BA18 CA01 CB02 CE01 DA01 DA02 DA03 DB01 DB02 DB03 DB04 DC01 DE03 DE05 2B076 AA03 BA07 CD03 3D040 AA22 AB04 AC01 AD04 AD18 AE19 3J070 AA03 AA14 BA32 CB37 CC71 CE01 DA24

Claims (3)

[Claims] 1. A manually operated information input unit for inputting information necessary for executing control for work is provided in a control unit in proximity to a driver's seat, and a manually operated lever for traveling a vehicle body is provided. In order to position the lever grip portion above the information input portion, the lever grip portion is provided so as to extend from a side farther than the position of the information input portion with respect to the driver seat toward the upper side of the information input portion. Working vehicle. 2. A mowing part positioned at the front of the traveling vehicle body for mowing the planted grain culm, and a threshing processing for threshing the harvested grain culm mowing at the mowing part located at the rear side of the body of the mowing part. Unit, and each of the grain tank is located on the right side of the threshing unit and stores the grain after the threshing process is provided, the control unit is on the right side of the threshing unit, And it is provided in a state located on the front side of the grain tank, and a boarding / alighting section is provided on the right front side of the driver's seat. The information input section and the manual operation lever are arranged on the left side of the driver's seat. 2. The work according to claim 1, wherein a single reaping operation tool for manually instructing a steering operation of the traveling vehicle body and an elevating operation of the reaper is provided in front of the driver seat. car. 3. A grain discharging device for discharging grains stored in the grain tank to the outside is provided on a rear side of the vehicle body, and a grain discharging operation of the grain discharging device is provided on a right side of the driver's seat. The work vehicle according to claim 2, further comprising a grain discharging operation unit for instructing the operation.