JPH1023821A - Check system of working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the check system of a working machine, facilitating to quickly check on the spot the working machine on check information memorized in the check system, e.g. when a service man visited a user does not have a check device, and, if necessary, further connects the check device to the working machine for a highly functional check. SOLUTION: This check system of a working machine is provided with a working part and a control part 7 for controlling the operations of the working part. Check information for checking the operations of the working part is memorized in the control part 7, and a check device having check information for checking the operations of the working part is disposed in a state capable of being communicably connected to the control part 7. The control part 7 can be switched into an ordinary mode for controlling the operations of the working part, a self check mode for checking the operations of the working part on check information memorized in the check system itself or an outer check mode. In the outer check mode, the check device connected to the control part 7 transmits command information to the control part 7 and simultaneously check the operations of the working part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work machine inspection system including a work unit and a control unit for controlling the operation of the work unit.

[0002]

2. Description of the Related Art In a working machine inspection system, the operation of a working unit such as a reaping unit or a threshing unit is conventionally inspected in a combine for agricultural work, which is an example of a working machine. Actuating the actuator of
In order to check the detection operation of the detection means such as a sensor, there is one in which the control unit of the combine performs an inspection based on the inspection information stored therein (for example, the applicant of the present invention). Proposed in Japanese Patent Application No. Hei 7-2187
In addition, there is another type in which an external inspection device such as a portable type provided with inspection information is connected to a control unit on the work machine side, and inspection is performed while command information is transmitted from the inspection device side ( For example, see JP-A-6-269058).

[0003]

However, in the prior art described above, in the former case, since the inspection information needs to be stored in the control unit of the work machine, there is a limit to increasing the amount of the information, so There is a problem that only a single function inspection can be performed.On the other hand, in the latter case, a high-performance inspection can be performed by increasing the amount of information provided in the inspection apparatus. Inspections cannot be performed when the user does not have the inspection device, and it is necessary to bring an inspection device each time when performing a simple inspection, which is inconvenient. The present invention
The purpose of the present invention is to solve the above-mentioned disadvantages of the related art, for example, when a service person does not have an inspection device, using inspection information provided in a work machine. It is an object of the present invention to make it possible to perform a high-performance inspection by an inspection device as needed while performing an inspection quickly on the spot according to a request of a user.

[0004]

According to the structure of the first aspect, the control unit of the work machine is switched between a normal mode, a self-inspection mode, and an external inspection mode. The operation is controlled for work, and in the self-inspection mode, the operation of the working unit is inspected based on the inspection information stored in the control unit. In the external inspection mode, the inspection device connected to the control unit on the work machine side Inspects the operation of the working unit while transmitting command information to the control unit.

Therefore, by switching the operation mode to the self-inspection mode while allowing the work machine to perform the work in the normal mode, even if the service person does not have the inspection device, for example, the inspection information provided in the work machine can be obtained. Inspection can be performed quickly on the spot by using the inspection apparatus, and by switching to the external inspection mode, for example, when a finer inspection is required for a defective portion found by the above-described self-inspection, etc., the inspection apparatus can be used to inspect the defect. A functional inspection can be performed, and an inspection system that can appropriately respond to various inspection requests can be obtained.

According to the configuration of claim 2, in the configuration of claim 1, when the inspection device is connected to the control unit on the work machine side, the mode is switched to the external inspection mode. Cannot switch to inspection mode.

Therefore, when the inspection apparatus is connected to the control unit of the work machine in order to perform the inspection by the inspection apparatus, the mode is automatically switched to the external inspection mode. For example, a switch for manual external inspection switching is provided. The external inspection can be performed in a more reliable state as compared with the case of providing, so that the preferable means of the configuration of claim 1 can be obtained.

According to the configuration of claim 3, claim 1 or 2
In the configuration of (1), when the mode switching means provided in the control unit on the work machine side or the auxiliary control unit communicable with the control unit is manually operated, the control unit is switched to the self-inspection mode.

Therefore, for example, when the control unit is configured with the minimum control function and a control function for improving the function is added to the auxiliary control unit, the self-inspection is performed according to the actual control configuration of the machine. The mode switching means can be provided in an appropriate state, for example, provided at a position where the operator can easily operate the control section, and thus the preferred means of the first or second aspect is obtained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a combine for agricultural work as a working machine will be described below with reference to the drawings. As shown in FIG. 1, the combine has a reaper 12 provided at a front portion of a body V having a pair of right and left crawler traveling devices 11.
A control unit 13, a threshing unit 14 for threshing and sorting the harvested grain culm, a Glen tank 15 for storing grains supplied from the threshing unit 14, and the like are mounted behind. Here, the reaper 12
The threshing unit 14 and the like correspond to a working unit.

The cutting unit 12 receives a weeding tool 16 attached to the tip, a grain stalk raising device 17, a cutting blade 18 for cutting the root of the caused grain stalk, and a cut grain culm on the tip side. And a transporting device 19 for transporting to the threshing unit 14. Further, an ultrasonic sensor S1 for detecting the height of the cutting unit 12 from the ground and a stock sensor S2 for turning on when the grain stalk touches to detect that the cutting operation is being performed are provided. The height information from the ground by the ultrasonic sensor S1 is used for cutting height control when cutting the culm, and the detection information of the stock sensor S2 is used as one of control start conditions.

Further, in order to maintain the handling depth in the threshing unit 14 in an appropriate state, the tip sensor S3 ( 5 (see FIG. 5) are provided in the culm length direction (ear side and root side). Then, based on the detection information of the pair of head sensors S3, the transport front end side of the transport device 19 is swung in the culm length direction with respect to the rear end side,
An adjustment is made so that the head of the grain stem is located between the pair of head sensors.

The right and left crawler traveling devices 11 are configured to be able to be individually driven up and down with respect to the machine body V. As a result, it is possible to perform the rolling control for maintaining the body V horizontal regardless of the inclination of the ground or maintaining the body V at the set angle. For this purpose, a rolling sensor S4 for detecting the inclination of the body V with respect to the horizontal is provided.

The threshing unit 14, as shown in FIG.
1, a feed chain 22 for transporting grain culms supplied from the mowing unit 12, a sorting device B including a torsion 23 and a rocking sorting plate 24, a first port 2 for grain recovery.
5, and a second port 26 for collecting a mixture of grain and straw waste. Of the processed material threshed in the handling room A, the single-grained product is supplied to the receiving net 2 provided at the lower part of the handling room A.
7 and leaked to the sorting device B,
7 falls into the sorting device B from the rear end.

The oscillating sorting plate 24 of the sorting device B includes
3 includes a Glen pan 28 located above, a chaff sheave 29 located behind and a Glen sheave 30 located below. In the chaff sheave 29, the interval between adjacent strip-shaped members (referred to as chaff opening) is changed by simultaneously changing the angle of the plurality of strip-shaped members arranged in the processing object transfer direction around the horizontal axis. A chaff opening sensor S8 using a potentiometer for detecting the chaff opening.
(See FIG. 5).

The torsion 23 is for blowing off the straw debris on the oscillating sorting plate 24. The larger the degree of opening of the fan case cover 23a, the greater the amount of air that escapes from the opening. The wind force (referred to as toumi wind force) exerted on the processed material on the swing sorting plate 24 is reduced. A toumi wind sensor S9 (see FIG. 5) using a potentiometer for detecting toumi wind is provided.

With respect to the sorting apparatus B, the control (sorting control) for adjusting the chaff opening and the wind power of the turtle according to the conditions such as the amount, type, and humidity of the processed material is performed as described above.
The grains leaking from the grain sieve 30 are oscillated on the sorting plate 2
The mixture of the grain and the straw waste collected from the first port 25 provided below and stored in the Glen tank 15 and dropped from the rear end of the chaff sheave 29 or the rear end of the Glen sheave 30 is discharged from the second port 26. It is collected and returned to the swing sorting plate 24.

Next, FIG. 3 shows a power transmission system. The output of the engine E mounted on the machine body V is transmitted to the threshing unit 14 via the threshing clutch 31 and the traveling clutch 32
The transmission is transmitted to the transmission section 34 of the crawler traveling device 11 via the continuously variable transmission 33. Part of the output transmitted to the transmission section 34 is transmitted to the reaping section 12 via the reaping clutch 35. S7 is a threshing switch for detecting the on / off state of the threshing clutch 31, and S5 applies a magnetic field to the flywheel ring gear of the engine E to obtain a sine wave of a frequency corresponding to the number of teeth per unit time. S6 is a speed sensor for detecting the engine speed, which is formed by an electromagnetic pickup. S6 is a vehicle speed sensor provided in the transmission for detecting the vehicle speed.

A continuously variable transmission 33 for increasing or decreasing the vehicle speed
Is manually operated by a shift lever and automatically operated by an electric motor. That is, since the engine speed decreases as the engine load increases, the vehicle runs at a constant speed when the engine speed is optimum, but when the load increases and the engine speed decreases, the vehicle speed is reduced and If the load is reduced by reducing the threshing processing amount and conversely, if the load is reduced and the engine rotation speed becomes higher than the optimum rotation speed, the vehicle speed is increased to increase the cutting amount, that is, the threshing processing amount, so that the continuously variable transmission is performed. Vehicle speed control is performed to increase or decrease the running speed by performing a gear shift operation on the device 33. However, it does not become faster than the preset maximum vehicle speed.

As shown in FIG. 4, a display panel unit C for inputting command information such as start / stop of each control and displaying various control information is a combination of a liquid crystal display module and a membrane keyboard. The body-shaped panel is provided at a position that is easy for the operator of the control unit 13 to see and operate. On the front surface of the display panel unit C, a display screen 1 for displaying control information and key input units 2, 3, and 4 for inputting information are provided. The display screen 1 is configured by a dot matrix type liquid crystal graphic display, and various control information such as a remaining fuel amount, an hour meter (operating time), an engine speed, and a load state are displayed on the screen. The key input units 2, 3, and 4 are configured by push-button switches, and include a start / stop switch 2 for each control, a changeover switch 3, and a storage switch 4.

Next, a control configuration of the combine is shown in FIG. A meter controller 7 as a control unit (corresponding to a main control unit) for controlling the operation of each of the working units (the mowing unit 12, the threshing unit 14, etc.), and an RS485 interface for the meter controller 7 A control unit 8 as an auxiliary control unit that can communicate freely in a format is provided and configured using a microcomputer. Stock sensor S2 among the sensors S1 to S9,
Head sensor S3, rotation speed sensor 5, and threshing switch S
7 and the respective detection information of the fuel sensor S10 for detecting the remaining amount of fuel are input to the meter controller 7, and the respective detection information of the ultrasonic sensor S1, the rolling sensor S4 and the vehicle speed sensor S6 are input to the control unit 8. ing.

On the other hand, from the meter controller 7, an actuator (oscillation motor) M1 for adjusting the handling depth,
A drive signal for an AES (automatic engine stop) actuator (relay or the like) M2 is output, and the control unit 8 outputs cutting height control and rolling control actuators M3 to M4, vehicle speed control, and chaff opening adjustment. Signal is output to each of the electric motors M5 to M7 for controlling the wind power and the wind power of the windmill. The meter controller 7 and the control unit 8 control each actuator M based on the detection information of each sensor and the preset control information.
1 to M4, the electric motors M5 to M7, and the like are driven to execute the above-described controls (depth control, cutting height control, rolling control, sorting control, vehicle speed control, and the like).

The operation of the display screen 1 of the display panel unit C and the key input units 2, 3, and 4 is performed by the meter controller 7
Is controlled by The start / stop switch 2 has a plurality of switches corresponding to each control as shown in FIG. 4 to instruct start and stop for each control described above, and each switch is also used for start and stop. . That is, when the switch corresponding to the active control is pressed, the control is stopped, and when the switch corresponding to the stopped control is pressed, the control is activated. In addition, a changeover switch 3 (hereinafter referred to as C
In order to manually switch control states such as a normal mode and an inspection mode, two different operation states, specifically, an ON state in which a switch is connected to the ground and a state in which the switch is not pressed, are referred to as K-1. It is configured to be freely switchable between an open state and an open state.

In the meter controller 7, inspection information for inspecting the operation of each of the working units (the reaping unit 12, the threshing unit 14, etc.) is stored. Then, the meter controller 7 controls each working unit (the reaping unit 12, the threshing unit 14, and the like).
Each operation unit (the reaping unit 1) is controlled based on the normal mode for controlling the operation of the
2, the threshing unit 14) can be switched between a self-inspection mode for inspecting the operation of the threshing unit and an external inspection mode.

As shown in FIG. 6, a microcomputer checker MC as an inspection device provided with inspection information for inspecting the operation of each of the working units (the cutting unit 12, the threshing unit 14, etc.) on the combine side is operated by the combine operating unit. IC card 42 as a detachable storage medium for storing inspection information for inspecting the operation of the unit, an inspection control unit 41 for inspecting the operation of each working unit based on the information of the IC card 42, RS232
C interface 45, LCD (liquid crystal) display 43,
It is provided with operation keys 44 and the like for inputting information.
Note that the IC card 42 stores inspection information for different types of work machines of the same type (for example, a combine or a tractor as a work machine for agricultural work) or different types of work machines of the same type (for example, a combine). IC card 4
2 is stored.

RS232C on microcomputer checker MC side
The interface 45 is configured to be connected to the RS232C interface 6 on the microcomputer checker MC side via the wire harness 46. As a result, the microcomputer checker MC can be freely connected to the combine-side meter controller 7 in a communicable state. Then, in the external inspection mode, the microcomputer checker MC connected to the meter controller 7 is configured to inspect the operation of each working unit while transmitting command information to the meter controller 7.

Further, as shown in FIG. 5, when the microcomputer checker MC is connected to the meter controller 7, an external inspection starting switch 5 (hereinafter also referred to as CK-2) provided on the meter controller 7 side. Is connected to the ground and turned on. That is, when the microcomputer checker MC is connected to the meter controller 7, the meter controller 7 can be switched to the external inspection mode.

Next, activation of each control state on the combine side will be described. As shown in the flowchart of FIG. 7, after the main key is turned on to turn on the drive power (that is, power is supplied to each part of the machine), a set cycle (10 ms) is performed until a set time (500 ms or the like) elapses.
), The external inspection mode flag and the self-operation flag are set according to the state of the switches CK-1 and CK-2. Is). In particular,
When CK-2 is on, the external inspection mode flag is set. When CK-2 is off and CK-1 is on, the self-operation flag is set.
When both K-2 are off, no flag is set.

After a lapse of a set time (eg, 500 ms), if the external inspection mode flag is set, the external inspection mode is started. If the external inspection mode flag is in the reset state, the self-operation flag is in the reset state. If the self-operation flag is in the set state, the normal mode is started if the CK-1 is still on, but the self-test mode is started if the CK-1 changes to the off state. Start That is, as shown in FIG. 8A, the drive power supply is turned on in a state where the CK-1 is operated to the on state, and then the self-inspection mode is activated as the CK-1 changes to the off state. It is configured to be.
Thus, CK-1 or the changeover switch 3 corresponds to a manually operated mode switching means for switching the meter controller 7 to the self-inspection mode.

Further, in the self-inspection mode,
As shown in FIG. 8A, every time the changeover switch 3 is switched between the ON state and the OFF state, the above-described reaper 1
2. The threshing unit 14, the engine E, the body V, the traveling device 11, etc., are sequentially switched to the respective inspection modes for executing the inspection for the respective working units (specifically, the respective actuators, sensors, and the like). The contents of the inspection mode are displayed on the display screen 1.

Inspection of each working unit is performed by checking the inputs of the sensors S1 to S10 and checking the outputs of the actuators and the electric motors M1 to M7. And operation such as a model setting mode. In the input check, for example, the reaper 1
When the stock sensor S2 provided to the stock sensor 2 is swung by hand, as shown in FIG. 4, "stock sensor" is displayed on the display screen 1 and at the same time the buzzer is activated and the stock sensor S2 is turned on. It can be confirmed that the detection operation has been performed. In the output check, for example, in the depth adjustment, the depth automatic lamp is turned on, and the output to the deep side and the output to the shallow side are alternately repeated with a stop time. The operation of the adjustment actuator M1 can be confirmed. still,
At the time of this output check, "output check" is displayed on the display screen 1.
Is displayed.

In the fine adjustment mode, for example, a chaff opening volume is changed by operating a chaff setting volume (not shown), and data corresponding to the maximum and minimum end positions of the potentiometers constituting the chaff opening sensor S8 are stored. Read, and determine whether each data is a normal value. If the data is normal, the value is stored, and if the data is abnormal, the value is not stored and “chaff fully closed value error” is not stored.
Etc. are displayed. In the model setting mode, each time the changeover switch 3 is operated, the model name is sequentially displayed. Therefore, the storage switch 4 is operated while the model name to be controlled is displayed, and the operation of storing the model name is performed. Do.

As shown in FIG. 8B, in the normal mode, the control state is displayed in a predetermined order, and each time the changeover switch 3 is switched between the off state and the on state, the display is made. The control status of each part of the machine is sequentially displayed on the screen 1. 9A shows an hour meter (operating time) display, and FIG. 9B shows a bar graph display of the engine speed.
(C) shows a load level represented by a number from 1 to 4 (the larger the number, the greater the load), and the left side of each display shows a bar graph of the remaining fuel amount. As a supplement to the display in the normal mode, after starting the normal mode, the model display is performed for 2 seconds, the hour meter is displayed and the system waits. When the engine starts, the engine speed is displayed. The engine load is displayed as the state (rearing state) changes.

As shown in FIG. 8B, in the normal mode, the abnormality control mode is activated upon detecting any abnormality in each machine part, and the display screen 1 is changed from the normal display to the abnormality in each machine part. The display is switched to an alarm display, which is an abnormal display for displaying the state, and the display on the display screen 1 is returned to the normal display as the changeover switch 3 is switched between the off state and the on state in the abnormal control mode. Have been. The alarm display indicates a failure location and the like. In addition, an alarm sound may be generated by a buzzer or a blinking display may be performed by a lamp together with the alarm display. In this case, when the changeover switch 3 is operated, the alarm sound and the blinking display are stopped.

Next, the inspection contents in the external inspection mode will be described. In the “input function inspection mode” selected by the operation keys 44, the inspection control unit 41 on the microcomputer checker MC side is required for the input function inspection in accordance with a preset order for each of the plurality of input function inspection items. In addition to displaying an operation instruction (for example, an instruction for a climbing operation on the reaping unit) for the working unit on the LCD display 43, a sensor relating to the working unit (for example, the reaping unit) to be subjected to the input function test on the combine side. (Specific information of the mowing unit, elevating position sensor, ultrasonic sensor, etc.) is transmitted. On the combine side, when the specific information of the sensor is received, the detection information of the specified sensor is directed to the microcomputer checker MC side. When the inspection control unit 41 of the microcomputer checker MC receives the detection information of the sensor, Based on the content of the operation instruction to the part (elevating operation of the mowing part) and the detection information of the sensor (elevating position sensor of the mowing part, etc.), the input function of the working part (rearing part) to be subjected to the input function test is determined. Pass / fail judgment is made, and the judgment result is displayed on the LCD display 43.
The input function inspection control for executing the display is performed.

In the "output function test mode" selected by the operation key 44, the test control unit 41 of the microcomputer checker MC outputs the output function in accordance with a preset order for each of the plurality of output function test items. An operation instruction (eg, output of a front buzzer) of the actuator in the operation instruction and output function inspection required for the inspection is displayed on the LCD 43, and
The combiner transmits to the combiner the designation information of the working unit (in this case, the display / alarm unit connected to the meter controller 7) to be subjected to the output function inspection, and on the combiner side, Upon receipt of the designated information, output function inspection control is performed to execute actuation of the actuator (front buzzer) for the designated working unit.

In the "integrated function inspection mode" selected by the operation key 44, the inspection control section 41 on the microcomputer checker MC side performs the input function inspection control and the input function inspection control in accordance with a preset order of the integrated function inspection items. It is configured to execute an inspection for each inspection item in the output function inspection control.

Note that the combine meter controller 7
In the table, various types of error information about each working unit or sensor generated during the operation of the machine are stored. Here, as the error information during the operation of the machine, the operation lock of an actuator such as a motor, the number of occurrences of an abnormality in a detection value of a sensor (for example, a case where the value becomes impossible, or a case where the sensor does not operate at all) are stored. Is done. This error information is sent to the microcomputer checker MC side,
The information is displayed on the display 43 and is used as self-diagnosis data for specifying a failure location based on the probability of occurrence of the abnormality. Further, when an error information deletion command is received from the microcomputer checker MC, the stored error information is deleted. Further, the fine adjustment data is also transmitted to the microcomputer checker M in response to a request from the microcomputer checker MC.
It is sent to the C side and displayed on the LCD display 43.

Next, the control operation in the external inspection mode when the microcomputer checker MC is connected will be described with reference to the flowcharts shown in FIGS. In the main flow (FIG. 10), first, a request signal of model data and the like (in addition to the model, data such as format data, machine number, use time, and the like) is sent from the inspection apparatus, that is, the microcomputer checker MC side, to the work machine, that is, the combine side. When the combiner receives the request signal, the combiner transmits information such as stored model data. When the checker MC receives the information such as the model data, both the received model data and the model data input by the operation keys 44 are set to L.
In addition to displaying the data on the CD display 43, if the two types of data do not match, this fact is displayed and an instruction to re-enter the correct type data is issued. Inspection information corresponding to model data
A selection is made from information stored in the C card 42. When the all function check is instructed by the operation key 44, all the inspection items are executed for the "input function inspection" and the "output function inspection", and when not, the "integrated function inspection" is executed. The process of displaying the inspection result is executed until the end of the inspection is instructed.

In the "input function test" (FIG. 11), first,
A start message as shown in FIG.
Is displayed, the operation is performed according to the instruction (in this example, the engine is started). Next, when a confirmation key is input, an operation required for executing each input function inspection item is instructed. In the example illustrated in FIG. 15A, an instruction is given to raise the cutting unit. Next, the input signal of each sensor that should make a predetermined change in accordance with the operation is checked, and if there is a predetermined change, it is determined to be OK.
J is determined. Then, when the determination is OK, FIG.
After the OK display as shown in (b) is performed and the confirmation key is input, the process returns to the flow of the next operation instruction unless all the inspection items are completed. If the judgment is NG, after inputting the confirmation key, an NG display as shown in FIG. 15 (c) is performed for several seconds, and an error is recorded for the sensor for which the predetermined signal change was not obtained. The process returns to the flow of the next operation instruction, except for the case where the inspection item of the above is completed.

In the "output function test" (FIG. 12), first,
A start message as shown in FIG. 16 is displayed on the screen, and operation is performed according to the instruction (in this example, the engine is stopped). Next, when the confirmation key is input, the execution contents of each output function inspection item and the operation instructions necessary for the execution are displayed. In the example illustrated in FIG. 17, the execution of the output of the front buzzer is displayed. And
When the confirmation key is input, the process returns to the flow from the display of the execution contents of the output function inspection items and the operation instruction for the same, unless all the inspection items have been completed.

In the "integrated function test" (FIG. 13), first,
Various control names provided for the model are displayed on the screen based on the model data and so on.If a control to be inspected is selected from the screen, a function inspection item for input / output performed in the inspection of the control is searched. , The input and output inspection items are executed accordingly. The execution contents are “input function test” (FIG. 11) and “output function test” (FIG. 12).
For example, when the handling depth control is selected, a start message (starting of the engine) as shown in FIG. 14 is displayed on the screen. Next, an operation instruction as shown in FIG. 15 (a) is displayed. When the operation is performed according to the instruction and the result is OK, an OK display as shown in FIG. 15 (b) is displayed. The output content of the output inspection as shown in FIG. 18 (in this example, the output of the motor for adjusting the handling depth) is displayed. Then, the above flow is executed until all the inspection items are completed.

In the display of the inspection result, when there is an NG item, the name of the sensor determined as NG is displayed as shown in FIG. 19, and when there is no NG item, a message indicating that there is no NG item is displayed. Is done.

[Alternative Embodiment] In the above embodiment, the working machine inspection system according to the present invention is applied to a farming combine as a working machine. It is also applicable to construction machines for civil engineering work. Then, the working unit and the specific configuration of the detecting means such as an actuator for operating the sensor and a sensor, and the inspection content in the self-inspection mode, and the inspection items of the input function, the output function, and the integration function in the external inspection mode, It is set appropriately according to the working machine.

In the above embodiment, the inspection apparatus MC and the control unit 7 of the work machine are configured so as to be communicably connectable.
Although it was configured by RS232C interface etc.,
It is not limited to this.

In the above embodiment, when the inspection device MC is connected to the control unit 7 on the work machine side, the mode is automatically switched to the external inspection mode. In addition, a manually operated switch is separately provided. Then, this switch may be operated to switch to the external inspection mode.

In the above embodiment, the control unit 7 is provided with the auxiliary control unit 8 which can communicate freely. For example, in the case of a simple model,
A configuration that can be controlled only by the control unit 7 is also possible.

In the above embodiment, the mode switching means 3 is provided in the control section 7. However, the mode switching means 3 may be provided in the auxiliary control section 8 or in both the control sections 7 and 8. As shown in FIG. 20, the control unit 7 is switched to the self-inspection mode by a communication request from the auxiliary control unit 8 having received the switching information from the mode switching unit 3. That is, the mode switching unit 3 can be provided in at least one of the control unit 7 and the auxiliary control unit 8.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a side perspective view of the threshing unit of the combine.

FIG. 3 is a power transmission diagram of the combine.

FIG. 4 is a front view of a display panel provided in the combine.

FIG. 5 is a block diagram of a control configuration of the combine.

FIG. 6 is a block diagram of a control configuration of the inspection device.

FIG. 7 is a flowchart of start control on the combine side;

FIG. 8 is a time chart showing a control operation in a normal mode and a self-inspection mode.

FIG. 9 is a diagram of a display screen in a normal mode state.

FIG. 10 is a main flowchart of control in an external inspection mode.

FIG. 11 is a flowchart of an input function inspection process;

FIG. 12 is a flowchart of an output function inspection process.

FIG. 13 is a flowchart of an integrated function inspection process.

FIG. 14 is a display example of a display screen on the inspection device side.

FIG. 15 is a display example of a display screen on the inspection device side.

FIG. 16 is a display example of a display screen on the inspection device side.

FIG. 17 is a display example of a display screen on the inspection device side.

FIG. 18 is a display example of a display screen on the inspection device side.

FIG. 19 is a display example of a display screen on the inspection device side.

FIG. 20 is a flowchart of start control on the combine side according to another embodiment;

[Explanation of symbols]

 12, 14 working unit 7 control unit MC inspection device 8 auxiliary control unit 3 mode switching means

Claims (3)

[Claims] 1. An inspection system for a working machine, comprising: a working unit; and a control unit for controlling the operation of the working unit, wherein the inspection information for inspecting the operation of the working unit includes the control information. An inspection device stored in the unit and provided with inspection information for inspecting the operation of the working unit is communicably connected to the control unit, and the control unit controls the operation of the working unit. It is configured to be freely switchable between a normal mode for controlling for work, a self-inspection mode for inspecting the operation of the working unit based on inspection information stored therein, and an external inspection mode. An inspection system for a work machine, wherein the inspection device connected to the control unit inspects the operation of the work unit while transmitting command information to the control unit. 2. The inspection system for a work machine according to claim 1, wherein the control unit is switched to the external inspection mode when the inspection device is connected to the control unit. 3. An auxiliary control unit communicable with the control unit is provided, and at least one of the control unit and the auxiliary control unit is manually operated to switch the control unit to the self-inspection mode. The inspection system for a working machine according to any one of claims 1 to 2, further comprising a mode switching unit.