JP3771080B2 - Tractor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a tractor provided with a control device.
[0002]
[Prior art]
In general, this type of tractor is equipped with a control device that performs automatic control such as automatic tilling control and automatic tilt control, and it is possible to optimize the control state of automatic control based on setting changes such as control sensitivity. There is something that you can do. However, conventionally, since the number of setting operation tools is provided as many as the number of setting items, the number of parts is not allowed to increase, and there is a problem that setting change operations of various setting items and confirmation of setting states become complicated.
[0003]
[Problems to be solved by the invention]
Therefore, a setting display unit that can display various setting states of the control device and a setting operation unit that can change various setting states of the control device are provided so that the various setting states can be confirmed and changed in one place. However, when the setting display unit and the setting operation unit are not properly arranged, the visibility of the setting display unit and the operability of the setting operation unit may be reduced.
[0004]
[Means for Solving the Problems]
The present invention has been created in order to solve these problems in view of the above situation, and the invention of claim 1 is a tractor including a meter panel and a steering wheel in front of a driver's seat. When the tractor is provided with a setting display unit capable of displaying various setting states of the control device and a setting operation unit capable of changing various setting states of the control device, the setting display unit is provided in the meter panel. On the other hand, the setting operation unit is arranged on the lower side of the setting display unit and shifted in the left-right direction, and set on the setting operation unit according to the operation. A menu switch for displaying the menu, a selection switch for sequentially switching setting items set in the setting menu according to the operation, and a setting item according to the operation A tractor, characterized in that the determination switch for changing display settings configured by arranged side by side in the lateral direction and displays the current settings. In other words, various setting states can be confirmed and changed at the front position of the driver's seat with excellent visibility and operability, and the setting operation unit is shifted to the lower right or lower left of the setting display unit. Therefore, the setting operation unit can be operated with the right hand or the left hand without difficulty while viewing the setting display unit from the front.
A second aspect of the present invention is the tractor according to the first aspect, wherein the setting display section and the setting operation section are concentrated on the right side or the left side of the center of the steering wheel. That is, it is possible to improve visibility and operability as compared with the case where the setting display unit and the setting operation unit are arranged in a left-right distribution manner.
A third aspect of the present invention is the tractor according to the first aspect, wherein the setting operation portion is arranged in the vicinity of the upper side of the key switch which is the engine start operation portion. That is, since the setting operation unit is arranged in the vicinity of a key switch having a high operation frequency, the position of the setting operation unit is easily recognized, and the setting operation unit is located above the key switch. The inconvenience that the key holder hangs down and the operability is lowered can be avoided as in the case where the key holder is disposed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of a tractor, and a work machine 3 is connected to a rear portion of the traveling machine body 1 via a lifting link mechanism 2. The work implement 3 moves up and down with the vertical hydraulic operation of the lift arm 5 that suspends the lift link mechanism 2 via a pair of left and right lift rods 4, and is interposed between the left and right lift rods 4. While the lift rod cylinder 6 inclines left and right with the hydraulic expansion and contraction operation, these basic configurations are all conventional.
[0006]
Reference numeral 7 denotes a driver seat provided at the rear of the traveling machine body 1. A steering wheel 8 for steering the traveling machine body 1 is provided in front of the driver seat 7, and a meter panel 9, key switch (engine start A front panel 12 including an operation tool 10 and a light switch 11 is provided.
[0007]
Meters such as an engine tachometer 13 and monitor lamps such as a charge lamp 14 are incorporated in the meter panel 9. Further, various settings of the control device 15 are provided at the lower right end of the meter panel 9. A setting display unit 16 capable of displaying the state is provided. In other words, the setting display unit 16 is composed of a liquid crystal panel having display dots of n rows and m digits, and displays various setting states as arbitrary character strings or figures in accordance with display drive signals from the control device 15. Be able to.
[0008]
A setting operation unit 17 is provided at the lower right end of the front panel 12. The setting operation unit 17 includes a menu switch 18 for displaying a setting menu on the setting display unit 16 , as will be described later. Selection switches 19 and 20 for selecting setting items and a decision switch 21 for sequentially switching and displaying the setting values of the selected setting items are arranged in the left-right direction. That is, by operating the setting operation unit 17 while looking at the setting display unit 16, it is possible to check or change various setting states of the control device 15, but the setting display unit 16 and the setting operation unit 17 are Since it is provided on the front panel 12, various setting states can be confirmed and changed at the front position of the driver's seat 7 having excellent visibility and operability.
[0009]
Further, the setting operation unit 17 is arranged below the setting display unit 16 and shifted to the right side. For this reason, the setting operation unit 17 can be comfortably operated with the right hand while viewing the setting display unit 16 from the front. In addition, since the setting display unit 16 and the setting operation unit 17 are centrally arranged on the right side of the center of the steering wheel 8, the setting display unit 16 and the setting operation unit 17 are arranged in a laterally distributed manner. Visibility and operability can be improved compared with the case where it did.
[0010]
The setting operation unit 17 is disposed in the vicinity of the upper side of the key switch 10 that is frequently operated. Therefore, the position of the setting operation unit 17 can be easily recognized and the lower side of the key switch 10 can be recognized. As in the case where the setting operation unit 17 is disposed, the inconvenience that the key holder hangs down and the operability is lowered can be avoided. In the present embodiment, when the setting operation unit 17 is disposed between the meter panel 9 and the key switch 10, the setting operation unit 17 is formed in a horizontally long shape. The setting operation unit 17 can be arranged using the existing space effectively without increasing the interval.
[0011]
Reference numeral 22 denotes a signal display unit provided in the meter panel 9. The signal display unit 22 includes a plurality of light emitting diodes LED arranged in parallel in the left-right direction, and a light emission drive signal from the control device 15. In response to this, the output status of the hydraulic control signal or the like is displayed by light emission. That is, since two types of display units 16 and 17 having different display methods are provided and different information is displayed independently of each other, various types of information can be displayed while ensuring good visibility. It has become.
[0012]
By the way, the signal display unit 22 is provided in the vicinity of the lower side of the engine tachometer 13 because the relevance to the setting operation unit 17 is low. And since this position is the approximate center of the meter panel 9, good visibility can be ensured, and since it is appropriately spaced from the setting display section 16, both the display sections 16 and 22 can be connected simultaneously. Even if it is actuated, it is possible to avoid inconveniences that lower the other visibility.
[0013]
The control device 15 is configured using a microcomputer (including a CPU, a ROM, a RAM, and the like). On the input side thereof, in addition to the menu switch 18, the selection switches 19 and 20 and the determination switch 21 described above, The plowing depth sensor 23 for detecting the plowing depth of the work implement 3, the tilt sensor 24 for detecting the horizontal tilt of the traveling machine body 1 or the work implement 3, the lift arm sensor 25 for detecting the arm angle of the lift arm 5, and the lift rod cylinder 6 A lift rod sensor 26 for detecting the cylinder length, a position sensor 28 for detecting the operation position of the position lever 27, a tilling depth setting volume 29 for setting a target tilling depth of "cultivation depth automatic control" described later, and an "tilt automatic control" described later. An inclination setting volume 30 or the like for setting the target inclination is connected via a predetermined input interface circuit. On the other hand, on the output side, in addition to the setting display unit 16 and the signal display unit 22 described above, the lift arm electromagnetic valve 31 lift and lower solenoids 31a and 31b, the lift rod electromagnetic valve 32 extension and reduction solenoid 32a, 32b and the like are connected via a predetermined output interface circuit. That is, the control device 15 automatically controls the lift arm electromagnetic valve 31 so that the detected height of the work implement 3 maintains the set height, and the detected tilling depth of the work implement 3 maintains the set till depth. Automatic “plowing depth automatic control” for automatically controlling the lift arm electromagnetic valve 31 and “tilt automatic control” for automatically controlling the lift rod electromagnetic valve 32 so that the detected inclination of the work implement 3 maintains the set inclination. The display control routine includes display control routines such as “setting display control” for display control of the setting display unit 16 and “signal display control” for display control of the signal display unit 22, and is a main part of the present invention. A control procedure of “setting display control” will be described based on a flowchart.
[0014]
The “setting display control” includes a sensor raw data output mode for displaying the raw data of the automatic control sensor on the setting display unit 16 and a setting change mode for changing various setting parameters in accordance with the operation of the setting operation unit 17. For example, when the menu switch 18 provided in the setting operation unit 17 is operated over a predetermined time, the setting change mode is switched, while the sensor raw data output mode is always executed. ing. In the sensor raw data output mode, it is determined whether “automatic tilling control” or “inclination automatic control” is ON. If “automatic tilling control” is ON, While the sensor value is displayed numerically or graphically on the setting display unit 16, when the “cultivation depth automatic control” is OFF and the “tilt automatic control” is ON, the inclination sensor value is numerically or graphically displayed. When the “plowing automatic control” and “tilt automatic control” are OFF, the position sensor value is displayed on the setting display unit 16 as a numerical value or a figure.
[0015]
On the other hand, in the setting change mode, a menu (diagnosis, inspection, demonstration, setting, display, storage, memory deletion, etc.) is displayed according to the operation of the menu switch 18 . For example, when “SETTING” is selected from the menu, the setting items (depth sensitivity, tilt sensitivity, parallel return, super hitch, lower link, dashing position, tires) are selected according to the operation of the selection switches 19 and 20. Size, etc.) are sequentially switched and displayed, and the current setting value of the corresponding setting item is displayed according to the operation of the decision switch 21 , and the setting value is changed. However, in the present embodiment, after performing the above setting change operation, the setting value before the setting change operation is held until “Store” is selected from the menu and the decision switch 21 is pressed. .
[0016]
In the configuration configured as described, a setting display unit 16 capable of displaying various setting states of the control device 15 on the traveling machine body 1 including the meter panel 9 and the steering wheel 8 in front of the driver's seat 7, and the control device 15. Since the setting display unit 16 is arranged in the meter panel 9 while the setting operation unit 17 is arranged below the setting display unit 16, various setting states can be changed. The setting state can be confirmed and changed at the front position of the driver's seat 7 having excellent visibility and operability, and the setting operation unit 17 is shifted to the right or left of the setting display unit 16. Therefore, the setting operation unit 17 can be operated without difficulty with the right hand or the left hand while viewing the setting display unit 16 from the front.
[0017]
Further, since the setting display unit 16 and the setting operation unit 17 are centrally arranged on the right side or the left side of the center of the steering wheel 8, compared to the case where the setting display unit 16 and the setting operation unit 17 are arranged on the left and right. Visibility and operability can be improved.
[0018]
Further, since the setting operation unit 17 is arranged in the vicinity of the key switch 10 having a high operation frequency, the position of the setting operation unit 17 can be easily recognized, and the setting operation unit 17 is located above the key switch 10. As in the case where it is arranged below the key switch 10, the inconvenience that the key holder hangs down and the operability is lowered can be avoided.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor.
FIG. 2 is a front view showing a steering wheel and a front panel.
FIG. 3 is a front view of a front panel.
FIG. 4 is a block diagram showing input / output of a control device.
FIG. 5 is a flowchart of “setting display control”;
FIG. 6 is an explanatory diagram showing display contents of a setting display unit.
FIG. 7 is an explanatory diagram illustrating a display example of a menu.
FIG. 8 is an explanatory diagram illustrating a display example of setting items.
FIG. 9 is an explanatory diagram illustrating a display example of set values.
FIG. 10 is an explanatory diagram showing a display example of a sensor raw data output mode.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Working machine 7 Driver's seat 8 Steering wheel 9 Meter panel 10 Key switch 12 Front panel 15 Control device 16 Setting display part 17 Setting operation part 22 Signal display part

Claims (3)

A tractor having a meter panel and a steering wheel in front of the driver's seat, a setting display unit capable of displaying various setting states of the control device on the tractor, and a setting operation unit capable of changing various setting states of the control device The setting display unit is composed of a liquid crystal panel disposed in the meter panel, while the setting operation unit is disposed below the setting display unit and shifted in the left-right direction, In the setting operation section, a menu switch for displaying a setting menu according to the operation on the setting display section, a selection switch for sequentially switching and displaying setting items set in the setting menu according to the operation, and that the determination switch for displaying changing settings configured by arranged side by side in the lateral direction and displays the current setting values of setting items in accordance Tractor and butterflies.   2. The tractor according to claim 1, wherein the setting display unit and the setting operation unit are concentrated on the right side or the left side of the center of the steering wheel.   The tractor according to claim 1, wherein the setting operation unit is disposed in the vicinity of the upper side of the key switch that is the engine start operation unit.

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