JP2000175544A - Mobile car for working - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile car for working capable of eliminating the need for a mode changeover operating tool for exclusive use and reducing both the number of parts and the cost by installing a specific check mode changeover means. SOLUTION: This mobile car for working is obtained by setting a usual mode for controlling output equipment based on an input signal from input equipment and a check mode for checking the input state from the input equipment or the output state to the output equipment in a control mode of a controller starting according to ON operation of a key switch. The controller is provided with a check mode changeover means for changing over the control mode to the check mode when a prescribed functional switch used in the usual mode is operated at the time of starting according to the ON operation of the key switch. In the process, the prescribed functional switch is preferably an automatic resetting type switch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a working vehicle such as a combine.

[0002]

2. Description of the Related Art In general, a traveling vehicle of this type includes a control mode of a control device which is started in response to an ON operation of a key switch, and a normal mode for controlling an output device based on an input signal from the input device. , A check mode for checking an input state from an input device or an output state to an output device is set. In this check mode, a switch, a single unit failure of a sensor, a disconnection of a connector, a contact failure of each part, a failure of a sensor In some cases, it is possible to easily diagnose a defective set, a defective single electromagnetic valve or the like.

[0003]

However, conventionally, when the control mode is switched to the check mode, a dedicated mode switching operation tool is provided, which leads to an increase in the number of parts and an increase in cost. Since the switching is always permitted, if the mode switching operation tool is erroneously operated, there is a possibility that the mode is switched to the check mode even during the operation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above-mentioned circumstances, and is directed to a control device which is activated when a key switch is turned on. In a working vehicle in which a control mode includes a normal mode for controlling an output device based on an input signal from an input device, and a check mode for checking an input state from the input device or an output state to an output device. The control device may further include a check mode switching unit configured to switch the control mode to the check mode when a predetermined function switch used in the normal mode is operated at the time of activation associated with the ON operation of the key switch. It is a feature. In other words, the mode is switched to the check mode by using the function switch used in the normal mode, so that a dedicated mode switching operation tool is not required, thereby reducing the number of parts and cost, and switching to the check mode. Is performed only when the key switch is turned on, so that the inconvenience of switching to the check mode due to an erroneous operation during the operation can be avoided. Further, the predetermined function switch is an automatic reset type switch. In other words, unlike the case where the mode is switched based on the ON signal of the residual switch, it is not possible to prevent the inconvenience of inadvertently switching to the check mode at the time of startup, and the normal mode is affected. Inconvenience can also be avoided. In addition, the check mode switching means, at the time of startup accompanying the key switch ON operation,
The control mode is switched to the check mode when a plurality of predetermined function switches used in the normal mode are simultaneously operated. That is, simultaneous operation of a plurality of function switches is required for switching to the check mode, so that the possibility of switching to the check mode due to erroneous operation can be reduced.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 is a pre-processing unit 2 for cutting stem culms, a threshing sorting unit 3 for threshing and selecting the cut stems and culms, and a grain for storing the selected kernels. A tank 4, an auger 5 for carrying out the grains in the grain tank 4 out of the machine, a post-processing section 6 for post-processing threshed culms, an operating section 7 provided with various operating tools, a crawler type traveling It is composed of the part 8 etc.
All of these basic configurations are conventional.

The operating section 7 is provided with a driver's seat 9 on which an operator sits, and a multi-lever 10 also serving as a steering lever and a pre-processing elevating lever is provided in front of the driver's seat 9.
While a key switch 11 also serving as a main switch and a starter switch is provided, on the left side of the driver's seat 9,
An automatic return (momentary) switch such as a main shift lever 12 for continuously changing the traveling speed, a horizontal automatic switch 13, a direction automatic switch 14, a sorting automatic switch 15, an automatic handling depth switch 16, a cutting height position switch 17, and the like. It is arranged.

Reference numeral 18 denotes a control device which is started when the key switch 11 is turned on. On the input side of the control device 18, in addition to the various switches described above, various volumes and various sensors are provided with predetermined inputs. On the output side, an actuator such as an electromagnetic valve or an electric motor or a notification device such as a lamp or a horn is connected via a predetermined output interface circuit to the output side. The main routine executed by the control device 18 includes “switch input” for setting signals input from various input devices to variables, and the threshing sorter 3.
"Handling depth control" for automatically controlling the handling depth of stems and stems, "Sorting control" for automatically controlling the opening degree of the chaff sheave in the threshing / sorting unit 3, and controlling the turning operation and lifting / lowering operation of the auger 5. Subroutines such as "auger control", "output control" to output signals to output devices, "input check" to check signal input status from input devices, and "output check" to check signal output status to output devices are defined. The "input check" and the "output check" are executed in the check mode, while the other subroutines are executed in the normal mode. In the normal mode, the horizontal automatic switch 13 and the direction automatic switch described above are used. 14, sorting automatic switch 15,
Automatic handling depth switch 16, Cutting height position switch 17
When an automatic reset type switch such as is turned ON, the corresponding switch flag (automatic control execution permission flag) is inverted, so that each time each switch is operated, the corresponding “depth control” and “sorting control” are performed. Automatic control such as ON and OF
The state can be alternately switched to the F state.

The main routine includes a start-up processing portion that is executed only at the time of startup and a loop processing portion that is repeatedly executed in a loop. Then, in a loop processing portion for repeatedly executing each subroutine, the control mode (normal mode or check mode) is switched according to the set value (0 or 1) of the check mode entry flag (mode switching flag). Since the mode entry flag is set to a flag value only in the startup processing portion, it is possible to avoid the inconvenience of switching to the check mode due to an erroneous operation during operation.

On the other hand, in a start-up processing portion which is executed only at the time of start-up accompanying the ON operation of the key switch 11,
After executing "Switch input", switch 1
6 and ON of the sorting automatic switch 15 are determined. If both the switches 15 and 16 are ON, the check mode entry flag is set to "1". The entry flag is set to “0”. In other words, the mode is switched to the check mode by using the switches 15 and 16 used in the normal mode, so that a dedicated mode switching operation tool is not required, so that the number of parts can be reduced and the cost can be reduced. In the embodiment, since the simultaneous operation of the plurality of switches 15 and 16 is required for switching to the check mode, the possibility of mode switching due to erroneous operation is reduced as compared with the case where mode switching is performed by a single switch operation. Is available.

By the way, when the check mode is entered, the horn is blown for a predetermined time to notify the operator of the entry into the check mode before executing the "output check" and the "input check". . Therefore, when the user enters the check mode due to an erroneous operation, the inconvenience of continuing the operation without noticing it can be avoided.

In the apparatus constructed as described above, the control device 18 is activated when the key switch 11 is turned on.
In the control mode, a normal mode in which an output device is controlled based on an input signal from an input device and a check mode in which an input state from the input device or an output state to an output device is set are set. , The control device 18
Means that when the key switch 11 is turned on by the ON operation, the check mode is entered when the automatic handling depth switch 16 and the selection automatic switch 15 used in the normal mode are operated ON. That is, since the check mode is switched by using the switches 15 and 16 used in the normal mode, it is possible to reduce the number of parts and cost by eliminating the need for a dedicated operation tool for switching to the check mode. In addition, since the switching to the check mode is performed only when the key switch 11 is turned on, the inconvenience of switching to the check mode due to an erroneous operation during operation can be avoided.

Further, since the handling depth automatic switch 16 and the sorting automatic switch 15 are automatic reset type switches, they are carelessly started at the time of starting, as in the case where the mode is switched based on the ON signal of the residual type switch. The inconvenience of switching to the check mode can be prevented, and the switch automatically returns to the OFF state after the check mode switching operation, so that there is no inconvenience affecting the normal mode.

In this embodiment, the key switch O
At the time of startup associated with the N operation, the mode is switched to the check mode only when the handling depth automatic switch 16 and the sorting automatic switch 15 are simultaneously operated, so that compared to the case of switching to the check mode based on a single switch operation. The possibility of mode switching due to erroneous operation can be reduced.

The present invention is, of course, not limited to the above-described embodiment. For example, as shown in FIG. 7, a single switch operation is determined when the key switch is turned on and turned on. Then, the mode may be switched to the check mode based on the determination. Further, as shown in FIG.
When switching to the check mode based on a predetermined switch operation, it may be determined that switching of the predetermined switch from ON to OFF is performed before entering the check mode. In this case, since the check mode is not entered while the predetermined switch is being operated, it is possible to give the operator time to stop entering the check mode.

[Brief description of the drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a perspective view of an operation unit.

FIG. 3 is a front view of the key switch.

FIG. 4 is a front view of a switch panel.

FIG. 5 is a block diagram showing input and output of the control device.

FIG. 6 is a flowchart showing a control procedure of the control device.

FIG. 7 is a flowchart illustrating a control procedure according to the second embodiment.

FIG. 8 is a flowchart illustrating a control procedure according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 7 Operation part 9 Driver's seat 11 Key switch 13 Horizontal automatic switch 14 Direction automatic switch 15 Sorting automatic switch 16 Automatic handling depth switch 17 Cutting height position switch 18 Control device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideya Eda 667 Iida-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. No. 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Masahiro Nishikori 667 Idai-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 In-Mitsubishi Agricultural Machinery Co., Ltd. 667 No. 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Tatsuya Yamazaki 667 Ibicho, Iza-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F term in Mitsubishi Agricultural Machinery Co., Ltd. 2B076 EA10 EB04 ED21

Claims (3)

[Claims] 1. A control mode of a control device, which is activated in response to an ON operation of a key switch, includes a normal mode for controlling an output device based on an input signal from the input device, an input state from the input device, and an output device. In a working vehicle in which a check mode for checking an output state to a vehicle is set, the control device operates when a predetermined function switch used in a normal mode is operated at the time of startup accompanying an ON operation of a key switch. And a check mode switching means for switching a control mode to a check mode. 2. The working vehicle according to claim 1, wherein the predetermined function switch is an automatic return type switch. 3. The check mode switching means according to claim 1, wherein the check mode switching means switches the control mode to a check mode when a plurality of predetermined function switches used in the normal mode are simultaneously operated at the time of startup associated with the ON operation of the key switch. A work vehicle for driving, characterized in that it is switched to