JP2000356164A - Tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items and simplify the set change operation by arranging a set change operation switch used also for a plurality of set data change operations near a steering wheel in the front of a driver's seat. SOLUTION: A set change operation switch (set operation part) 39 is provided on the right lower end of a front panel 34, and a menu switch 40 for displaying a set menu on a set display part 37, selection switches 41, 42 for selecting the set menu or a set parameter, and a determination switch 43 for determining the selected set menu or set parameter are laterally arranged in a row. The set display part 37 and the set operation part 39 are provided in the front of a driver's seat and arranged in the vicinity position of a steering wheel 16 having an extremely high frequency of operation. According to this, satisfactory visual confirmability and operability can be ensured at the time of set confirmation or change, and the set operation part 39 can be naturally operated by the right hand while watching the set display part 37.

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 tractor capable of changing a plurality of setting data referred to by a control device.

[0002]

2. Description of the Related Art Generally, a tractor of this kind is provided with a control device for executing automatic control such as position control, automatic plowing depth control, automatic tilt control, and the like. Some of them can be optimized based on the change of.

[0003]

Conventionally, however, setting operation tools are provided by the number of setting data, so that the number of parts cannot be increased and the operation of changing the setting of various setting data becomes complicated. Was.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above situation, and can change and operate a plurality of setting data referred to by a control device. In the tractor described above, a setting change operation switch used also for the plurality of setting data change operations is arranged near a steering wheel in front of a driver's seat. That is, since a plurality of setting data can be changed at one place, the number of components can be reduced and the setting change operation can be simplified, and the setting change operation switch has improved visibility and operability. Since it is provided near the steering wheel in front of the excellent driver's seat, it is not permissible to easily confirm the position of the setting change operation switch, and good operability can be secured. Further, a setting display unit also used for displaying a plurality of setting data and a signal display unit for displaying an operation signal output by the control device are provided side by side. That is, since a plurality of setting data can be displayed in one place, the setting state of the setting data cannot be easily checked, and the operability at the time of changing the setting can be improved. Since the output operation signal of the control device is displayed on an independent signal display unit, there is no inconvenience of confusing the setting data display with the operation signal display.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling body of a tractor, and a working machine 3 such as a rotary is mounted on a rear portion of the traveling body 1 via a lifting link mechanism 2. The working machine 3 is provided with a lift arm 5 that suspends the lifting link mechanism 2 via a pair of left and right lift rods 4.
While the ascent / descent is performed based on the hydraulic operation of the (lift cylinder 6), it is inclined left and right based on the hydraulic operation of the lift rod cylinder 7 interposed between the left and right lift rods 4.
All of these basic configurations are conventional.

Reference numeral 8 denotes a main control unit provided in the traveling body 1. The main control unit 8 is constituted by using a so-called microcomputer (including MPU, ROM, RAM, etc.), and has an input side. The lift arm sensor 9 detects the vertical swing angle of the lift arm 5, the lift rod sensor 10 detects the operating length of the lift rod cylinder 7, the position sensor 12 detects the operation position of the position lever 11, and the rear cover 3a. Work machine 3 based on the swing angle of
Depth sensor 13 for detecting the plowing depth of the vehicle, an inclination sensor 14 for detecting the left-right inclination of the traveling aircraft 1, a reverse detection sensor 15 for detecting the aircraft backward operation, and detecting the aircraft turning operation based on the turning angle of the steering wheel 16. Turning detection sensor 1
7. Automatic changeover switch 18 which also serves as ON-OFF operation tool for automatic plowing depth control and automatic tilting control, plowing depth setting volume 19 which is a target plowing depth setting operation tool for automatic plowing depth control, target inclination setting operation for automatic tilting control Setting knob 20 as a tool, raising height setting volume 21 as a lifting height setting operating tool for the working machine 3, mode switching switch (working machine switching switch) 22 as a control mode switching operating tool, lift arm manual operating tool Lift arm manual switch 23,
A reverse input control switch 24, which is an ON-OFF operation tool for reverse control, a turning control switch 25, which is an ON / OFF control tool for turning control, and a setting operation unit 39, which will be described later, are provided with a predetermined input interface. On the other hand, on the output side, an ascending solenoid 26a and a descending solenoid 26b of the lift arm electromagnetic hydraulic valve 26, an extending solenoid 27a and a reducing solenoid 27b of the lift rod electromagnetic hydraulic valve 27, A front wheel speed increasing solenoid 28a of the front wheel speed increasing clutch electromagnetic hydraulic valve 28, various monitor lamps, a signal display unit 44 described later, and the like are connected via a predetermined output interface circuit.

The control software storage memory M of the main control unit 8 has a position control for automatically raising and lowering the working machine 3 so as to maintain the set height set by the position lever 11, and a cultivation depth setting volume. Plowing depth automatic control for automatically raising and lowering the work machine 3 so as to maintain the set depth set in 19, and automatically tilting the work machine 3 right and left so as to maintain the set slope set in the slope setting volume 20 Automatic tilt control, front wheel speed increase control during turning to increase front wheel rotation during turning operation, turning up control to automatically raise work machine 3 during body turning, reverse movement to automatically raise work machine 3 during body reversing Although control software such as time rise control is written in advance, the main control unit 8 of the present embodiment includes a flash memory capable of electrically rewriting the storage content as the control software storage memory M1. Therefore, if a defect of the control software is found after shipment, it becomes possible to correct the control software with a personal computer PC connected to the flash writer W. As a result, the main control when correcting the control software is performed. Compared with the related art in which the unit 8 has been replaced, the cost for correcting the control software can be greatly reduced.

Reference numeral 29 denotes an operation panel provided on one side of the driver's seat 30. The operation panel 29 includes the position lever 11, the automatic changeover switch 18, the tillage setting volume 19, and the inclination setting volume. 20, lift height setting volume 21, mode changeover switch 22, lift arm manual switch 23, reverse rise control switch 24,
Although operating tools such as the turning-time ascending control switch 25 are provided, in the present embodiment, in selecting an operating tool to be provided on the operation panel 29, a sensitivity setting tool for automatically controlling the tillage depth, which has a low operation frequency, or the like. Since the sensitivity setting tool for automatic tilt control is intentionally excluded, the arrangement of the operation tools on the operation panel 29 can be simplified, and the operability of each operation tool can be improved.

In front of the driver's seat 30, a front panel 34 including a meter panel 31, a key switch 32, a light switch 33 and the like is provided in addition to the steering wheel 16 described above. The meter panel 31 incorporates meters such as an engine tachometer 35 and monitor lamps such as a charge lamp 36. Further, a main control unit 8 is provided at the lower right end of the meter panel 31. Is provided with a setting display section 37 capable of displaying setting data and the like. That is, the setting display section 37 is configured by a liquid crystal panel having display dots of n rows and m digits, and various setting data can be arbitrarily set in accordance with a display drive signal from a display control section 38 forming an integrated unit. It can be displayed as a character string or a graphic.

The setting operation section (setting change operation switch)
Reference numeral 39 denotes a menu switch 40 for displaying a setting menu on the setting display unit 37, and a selection switch for selecting a setting menu or a setting parameter. Switch 4
1, 42 and a decision switch 43 for deciding the selected setting menu or setting parameter are arranged in the left-right direction. In other words, by operating the setting operation unit 39 while viewing the setting display unit 37, various setting data of the main control unit 8 can be checked and changed at one place, so that the number of setting operations is equal to the number of setting data. This makes it possible to reduce the number of components and simplify the setting change operation as compared with the related art in which tools are provided.

The setting display section 37 and the setting operation section 39 are provided in front of the driver's seat 30 and are disposed in the vicinity of the steering wheel 16 where the operation frequency is extremely high. Good visibility and operability can be ensured at the time of change, and in this embodiment, since the setting display section 37 and the setting operation section 39 are centrally arranged at a position near the right side of the steering wheel 16, the setting display The user can operate the setting operation section 39 with his right hand while watching the section 37 without difficulty.

Reference numeral 44 denotes a signal display unit provided in the meter panel 31. The signal display unit 44 includes a plurality of light emitting diodes LED arranged in the left-right direction. In response to the light emission drive signal from the controller, the output status of the hydraulic control signal and the like is displayed by light emission. That is, in displaying various setting data and output operation signals of the main control unit 8, two types of display units 37 and 44 having different display methods are provided side by side, so that setting data display and operation signal display can be performed simultaneously. Instead, the display can be prevented from being confused.

A setting display unit 37 is connected to the display control unit 38 via an output interface circuit.
It is connected to the main controller 8 via a serial communication interface circuit and a serial communication cable 45. Then, the display control unit 38 sets the ON / OFF display screen of the automatic cultivation depth control and the automatic inclination control as the initial screen, and in response to the operation of the selection switches 41 and 42, the cultivation depth display screen of the work implement 3 and the traveling machine 1 The status display screens such as the tilt display screen, the engine speed display screen, and the like are sequentially displayed on the setting display unit 37, and the depth sensitivity setting (tilling depth automatic control sensitivity) and the tilt sensitivity are performed according to the operation of the menu switch 40. Setting (inclination automatic control sensitivity), lift cylinder operation speed setting, lift rod operation speed setting, dashing height setting, parallel return setting,
Setting change screens such as a hitch setting and a lower link hole setting are sequentially displayed. Further, in each setting change screen, setting data is switched and displayed by operating the selection switches 41 and 42, and the operation of the decision switch 43 is performed. Are stored in accordance with the setting data.

The display control section 38 includes a setting data storage memory M3 provided on the main control section 8 side and independent of the setting data storage memory M2, and stores the various setting data in its own setting data storage section. The data is stored in the memory M3 and transferred to the main controller 8.
When the setting data in the setting data storage memory M3 is lost due to the exchange of the display control unit 38 or the like, the transfer of the setting data stored in the setting data storage memory M2 of the main control unit 8 is requested. It automatically restores its own configuration data. In other words, the main control unit 8 is used to back up its own setting data. Therefore, even if the setting data is lost for some reason, there is no need to manually restore the setting data, and the setting data is not restored. As described above, it is possible to avoid inconveniences such as a decrease in control accuracy based on a difference in setting data.

On the other hand, the main control unit 8 also transfers data (for example, failure history data, etc.) other than the setting data stored in the setting data storage memory M2 to the display control unit 38, and stores the data in the setting data storage memory M2. M3 is backed up, and if the data in the setting data storage memory M3 is lost due to replacement of the main control unit 8 or the like, the display control unit 3
The transfer of the data stored in the setting data storage memory M2 of No. 8 is requested to automatically recover the own data.

In the apparatus configured as described above, a plurality of setting data referred to by the main control unit 8 can be changed. A setting operation unit 39 that can be used for the plurality of setting data changing operations is provided. With this configuration, it is possible to reduce the number of components and simplify the setting change operation as compared with the related art in which setting operation tools are provided by the number of setting data. Since it is provided in the vicinity of the steering wheel 16 which is excellent in operability, it is not permissible to easily confirm the position of the setting operation section 39, and good operability can be secured.

Further, since the setting display section 37 which can be used for displaying a plurality of setting data and the signal display section 44 which displays the operation signal output from the main control section 8 are provided side by side, the setting data display and the operation signal display can be performed simultaneously. It is possible to prevent the display from being confused and erroneously recognized as compared with the case where both displays are performed in one place.

In addition, the sensitivity setting tool for automatic control of cultivation depth and the sensitivity setting tool for automatic inclination control, which are infrequently operated, are intentionally excluded from the operation panel 29, and the sensitivity of both controls is set by the setting operation section 39. However, the number of components on the operation panel 29 can be reduced, and the operability can be improved by simplifying the arrangement of the operation tools.

In the setting operation section 39, the operating speed (reference speed setting) such as the operating speed of the lift cylinder and the operating speed of the lift rod can be set. Any operating speed can be set according to the above.

[Brief description of the drawings]

FIG. 1 is a side view of a tractor.

FIG. 2 is a plan view of an operation panel.

FIG. 3 is a sectional view of the same.

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

FIG. 5 is a block diagram showing input and output of a main control unit and a display control unit.

FIG. 6 is a flowchart showing data transfer control.

[Explanation of symbols]

 Reference Signs List 1 traveling machine 3 work machine 8 main control unit 29 operation panel 30 driver's seat 34 front panel 37 setting display unit 38 display control unit 39 setting operation unit 40 menu switch 41 selection switch 42 selection switch 43 decision switch 44 signal display unit 45 serial communication Cable M1 Memory for storing control software M2 Memory for storing setting data M3 Memory for storing setting data

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeji Tanaka 667 Idai-cho, Oji, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Satoshi Tamura Ichiya, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 667 1 Incorporated in Mitsubishi Agricultural Machinery Co., Ltd. 667 1 Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Masahiro Nishikori Ojiya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 667 1 Mitsubishi-Industrial Machinery Co., Ltd. 667 machi 1 Mitsubishi Fuki Co., Ltd. F term (reference) 2B304 KA08 MA02 MA06 MB02 PA08 PB06 3D030 DB13 DB16 3D044 AA21 AB07 AC39 AC41 AC57 BA04 BA16 BB 07 BC01 BD01 3G084 AA06 FA04

Claims (2)

[Claims] In a tractor capable of changing a plurality of setting data referred to by a control device, a setting change operation switch also used for the plurality of setting data changing operations is provided.
A tractor arranged near the steering wheel in front of a driver's seat. 2. The tractor according to claim 1, further comprising: a setting display unit also used for displaying a plurality of setting data; and a signal display unit for displaying an operation signal output by the control device.