JP4824354B2 - Work vehicle - Google Patents

Description

  The present invention relates to a work vehicle such as a tractor having a plurality of automatic control functions.

  Work vehicles having a plurality of automatic control functions are known. For example, the automatic control function provided in the tractor includes a depth control function, an inclination control function, a quick up control function, a backup control function, a turning up control function, a front wheel acceleration control function, an auto brake control function, and the like.

  In such work vehicles, it is possible to improve work efficiency and work accuracy by setting the on / off state of each automatic control function according to the work conditions, but on the other hand, the automatic control function Since the setting becomes complicated and there is a possibility of causing an erroneous setting, a work vehicle capable of setting a plurality of automatic control functions on and off collectively has also been proposed (for example, see Patent Documents 1 and 2).

In the work vehicles described in Patent Documents 1 and 2, a plurality of on / off setting patterns are prepared for a plurality of automatic control functions, and by selecting a desired on / off setting pattern from among them, the on / off of each automatic control function is selected. The state can be switched all at once. Further, in a predetermined mode (for example, the operator mode of Patent Document 1), each automatic control function can be individually turned on / off according to the preference of the operator, and these on / off setting patterns are stored and retained in the next work. Can be reproduced.
JP 2003-219707 A JP 2004-159620 A

  However, in the conventional work vehicle described above, when the work type (for example, rotary, hello, and upright) is changed, the setting of the automatic control function becomes inappropriate or the automatic control function is set according to the operator's preference. Can be difficult. For example, in the operator mode described in Patent Document 1, since the previous setting is reproduced even if the work type is changed, the setting of the automatic control function becomes inappropriate, and the work accuracy may be lowered. In addition, in the work vehicle described in Patent Document 1, it is possible to return the setting of the automatic control function to the initial value (factory shipment state) for each work type by selecting the substitute mode or the rotary mode. Therefore, it is difficult to set an automatic control function according to the operator's preference.

  Further, the conventional work vehicle has a problem that it cannot be easily returned to the original on / off setting state when an inexperienced operator makes an on / off setting by mistake. For example, when an erroneous setting is performed in the operator mode of Patent Document 1, if another mode is selected, it is possible to simultaneously switch the on / off state of each automatic control function. Since it is stored and held as it is, there is a problem that if the operator mode is returned again, the erroneous setting state is reproduced.

The present invention, which was created for the purpose of solving these problems in view of the such circumstances above, the invention of claim 1, a work vehicle provided with a plurality of automatic control function, the Automatic control functions include a depth control function that automatically controls the working machine plowing depth, a tilt control function that automatically controls the left and right inclination of the work machine, and a backup control function that automatically raises the work machine as the machine moves backward. , Turning up control function that automatically raises the work machine according to the turning of the fuselage, front wheel double speed control function that drives the front wheels at double speed according to the turning of the fuselage, and the rear wheel inside the turning according to the turning of the fuselage the are those having an automatic brake control function to brake automatically, the control device of the working vehicle, the mode switching means comprising a single push button switch, to the working mode with at least driving mode With line configured to allow, with a work switching means for selecting a work type in the work mode, in the traveling mode, the depth control feature, tilt control function, a backup control function, turning up control function, the front wheel speed control function, and with prohibits control operation of the automatic brake control function, wherein in the working mode, to allow the on-off setting of the auto-control function in each selected task type by the working switching means, said input set It has been allowed to control operation of the automatic control function, a working vehicle and inhibits a control operation of switching the set auto-control function. In this way, in the work mode, an automatic control function can be set according to the operator's preference for each work type. Further, by performing appropriate setting for each work type, it is possible to avoid the inconvenience that the setting of the automatic control function becomes inappropriate due to the switching of the work type.
The invention of claim 2 is characterized in that the control device comprises a setting mode for returning the on / off setting of the automatic control function in the work mode to a preset value preset for each work type. The work vehicle according to claim 1. In this way, even if an erroneous setting is made in the work mode, the setting of the automatic control function in the work mode can be easily returned to the default value simply by shifting to the setting mode.
According to a third aspect of the present invention, the control device stores the automatic control function on / off setting in the work mode in the nonvolatile memory 10 for each work type, and changes from the power-off state to the power-on state, and when the transition to the working mode by said mode switching means 14, characterized in that the on-off setting of the auto-control function in the working mode, the settings stored in the nonvolatile memory 10 for each work type The work vehicle according to claim 1 or 2. In this way, the setting of the automatic control function set by the operator for each work type can be reproduced in the next work.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a traveling machine body of a tractor. The traveling machine body 1 includes a motor unit 2 on which an engine (not shown) is mounted, an operation unit 3 on which an operator gets on, and various working machines (see FIG. 1). (Not shown) and a work machine connecting part 4 that can be selectively connected, and a rotary tilling work in which a rotary is connected to the work machine connecting part 4 and a shaving work in which a harrow is connected to the work machine connecting part 4 In addition, it is used for erecting work in which a rotary erecter with a tail wheel is connected to the work machine connecting unit 4.

  As shown in FIG. 2, the traveling machine body 1 is provided with a control device 5 for realizing various automatic control functions. The control device 5 includes a microcomputer unit 6 including a CPU, a RAM, a flash memory (ROM), a digital input circuit 7 for inputting signals from various switches and sensors, and an analog input circuit 8 for inputting signals from a potentiometer and the like. , A driver 9 that drives a lamp, a buzzer, a solenoid, and the like, a nonvolatile memory 10 such as an EEPROM, and a communication circuit 11 that communicates with a monitor device that is separately installed.

  The automatic control function realized by the control device 5 includes a depth control function for automatically controlling the working depth of the work implement, a tilt control function for automatically controlling the right and left tilt of the work implement, and a work implement according to the operation of the quick up lever 12. Quick up control function that automatically raises and lowers the work machine to the maximum height or working height, backup control function that automatically raises the work machine as the machine moves backward, and automatic work machine as the machine turns Includes a turn-up control function that controls the vehicle to rise, a front wheel double speed control function that drives the front wheels at double speed according to the turning of the aircraft, and an automatic brake control function that automatically brakes the rear wheels inside the turn according to the turning of the aircraft It is.

  As shown in FIG. 3, the operation unit 3 is provided with a main panel 13 provided with mode switching means for switching the control mode of the control device 5 and individual on / off setting means for each automatic control function. The mode switching means is composed of a mode switching switch 14 consisting of a single push button switch, and the control mode selected by the mode switching switch 14 is displayed by a work mode lamp 14a and a traveling mode lamp 14b. Further, as individual on / off setting means, a backup switch 15 for setting on / off of the backup control function, a turn up switch 16 for turning on / off the turning up control function, a front wheel double speed for turning on / off the front wheel double speed control function and the auto brake control function. -Auto brake switch 17 and the like are included. Further, in the vicinity of each of the switches 15 to 17, a backup lamp 15a for displaying the on / off setting state of the backup control function, a turning up lamp 16a for displaying the on / off setting state of the turning up control function, and the on / off of the front wheel double speed control function. A front-wheel double speed lamp 17a for displaying the off setting state, an auto brake lamp 17b for indicating the on / off setting state of the auto brake control function, and the like are arranged.

  As shown in FIG. 4, the operation unit 3 is provided with a side panel 18 provided with work switching means for selecting a work type. The work switching means is composed of a work switch 19 composed of a single push button switch, and the work type selected by the work switch 19 is displayed by three lamps 19a to 19c. In this embodiment, these work types include “cutting” that suits uprighting work, “other” that suits shaving work, and “rotary” that suits rotary tillage work. Other work types may be included. In FIG. 4, 20 is a position lever, 21 is a depth setting volume for setting the target depth of the depth control function, 22 is a raised height setting volume for setting the maximum height of the work implement, and 23 is an inclination. It is an inclination setting volume for setting a target inclination of the control function.

As shown in FIGS. 5 to 7, the control mode of the control device 5 includes at least a travel mode and a work mode. In the driving mode, automatic control functions that are not required when driving on the road , ie, depth control function, tilt control function, backup control function, turning up control function, front wheel double speed control function, and auto brake control function are prohibited. and, in the working mode, while allowing the on-off setting of each automatic control function for each task selected by the task change-over switch 19 type, to allow control actuation of the input set auto-control function, switching setting The control operation of the automatic control function is prohibited . If comprised in this way, in work mode, the ON / OFF setting of the automatic control function according to an operator's liking for every work classification will be attained. Further, by performing appropriate setting for each work type, it is possible to avoid the inconvenience that the setting of the automatic control function becomes inappropriate due to the switching of the work type.

Moreover, it is preferable that the control apparatus 5 is provided with the setting mode which returns the on / off setting of the automatic control function in work mode to the default value preset for every work type. With this configuration, even if an erroneous setting is made in the work mode, the setting of the automatic control function in the work mode can be easily returned to the default value simply by shifting to the setting mode.

In addition, the control device 5 stores the automatic control function on / off setting in the work mode in the nonvolatile memory 10 for each work type, switches from the power-off state to the power-on state, and enters the work mode by the mode switch 14. When shifting, the on / off setting of the automatic control function in the work mode is set to the previous setting stored in the nonvolatile memory 10 for each work type. If comprised in this way, the setting of the automatic control function which the operator set for every work type can be reproduced also in the next work.

  The mode transition between the travel mode and the work mode is performed based on the normal operation of the mode switch 14. That is, every time the mode change switch 14 is operated, the mode is switched alternately between the running mode and the work mode. However, when the mode change switch 14 is continuously operated (long press operation) for a predetermined time or longer, the setting mode is set. To migrate. If it does in this way, while the single mode changeover switch 14 will be able to change three modes, possibility of changing to setting mode by mistaken operation can be reduced. In this embodiment, when the mode is shifted to the setting mode according to the above-described operation, the automatic control function on / off setting in the work mode is returned to the default value and then automatically returned to the work mode. .

  Moreover, the control apparatus 5 of this embodiment is provided with the change mode for changing the default value for every work classification mentioned above. With this configuration, for example, an on / off setting that seems to be optimal for the user can be set in advance as a default value for each work type by the service person, and as a result, even if an erroneous setting is made in the work mode. It is possible to return to the optimum setting state simply by shifting to the setting mode. Further, the transition to the change mode is executed by turning on the key switch while pressing the mode switch 14. Thereby, it is possible to shift to the change mode without adding a switch, and it is possible to prevent a shift to the wrong change mode. Note that when shifting to the change mode, it is preferable to notify the mode shift with a buzzer or the like.

  In the change mode, it is preferable to set each automatic control function on / off by the individual on / off setting means so that normal work can be performed. Then, the final on / off setting content can be stored in the nonvolatile memory 10 as the changed default value. With this configuration, not only can the default value of each automatic control function be changed in the change mode, but also the changed setting content (default value) can be reliably stored and held regardless of whether the power is turned on or off.

  In the change mode, it is preferable that the default value can be returned to a specific initial value in accordance with a predetermined operation. With such a configuration, for example, even if an inexperienced serviceman accidentally changes the default value, the default value can be easily returned to a specific initial value (for example, a factory shipment state). In the present embodiment, when the mode switch 14 is pressed and held in the change mode, the default value is returned to a specific initial value. This makes it possible to return the default value to the initial value without adding a switch, and by requesting a long press operation, initialization due to an erroneous operation can be prevented.

  Next, a specific processing procedure for realizing the above functions will be described with reference to FIGS. As shown in FIG. 8, in the main routine of the control device 5, first, initial setting is performed (S101), and then mode switching control (S102), depth control (S103), tilt control (S104), quick-up. Subroutines such as control (S105), backup control (S106), turning-up control (S107), front wheel double speed control (S108), and auto brake control (S109) are repeatedly executed.

  As shown in FIG. 9, in the initial setting, first, it is determined whether or not the mode switch 14 is ON when the key is ON (S201). When the determination result is YES, the buzzer is sounded for a predetermined time (S202), the work mode lamp 14a and the travel mode lamp 14b are blinked (S203), and the shift to the change mode is notified. Thereafter, the ON state of the mode change switch 14 is determined again (S204). Here, when the mode change switch 14 is OFF, the mode change mode is entered (S205), and the mode change switch 14 remains ON. If so, the buzzer is stopped (S206). That is, the mode is changed to the change mode only when the mode change switch 14 is released during the buzzer. In addition, when not changing to change mode, the on / off setting state at the time of the last control is reproduced, and work or driving | running | working is attained (S207).

  As shown in FIG. 10, in the mode switching control, first, the switching operation of the work changeover switch 19 is determined (S301), and if this determination result is YES, it is further determined whether or not it is the work mode (S302). ). If this determination result is also YES, the on / off setting of the work type selected by the work changeover switch 19 is read out from the previous on / off setting stored for each work type in the nonvolatile memory 10. This is reproduced (S303). In the mode switching control, the operation of the mode switching switch 14 is determined (S304). If the determination result is YES, it is determined whether or not the current control mode is the work mode (S305). If NO is determined, the mode is switched to the work mode (S306), a setting permission request is issued to each automatic control function (S307), and the on / off setting state is stored in the nonvolatile memory 10 for each work type. (S308). On the other hand, when the mode selector switch 14 is normally operated in the work mode, the mode is switched to the travel mode (S309), a setting prohibition request is issued to each automatic control function (S310), and further, it is necessary when traveling on the road. The automatic control function is forcibly turned off (S311). When the mode changeover switch 14 is operated for a long time in the work mode (S312), it is determined whether or not the mode is the change mode (S313). If the determination is NO, the on / off setting state of the work mode is changed to a preset value state stored in advance for each work type (S314), while if the change mode is set, the default value for each work type is changed. Is changed to a specific initial value (factory shipment state) predetermined for each work type (S315).

  As an example of the individual on / off setting processing routine of each automatic control function, a front wheel double speed control routine is shown in FIG. As shown in this figure, in front wheel double speed control, it is first determined whether or not the setting is prohibited (S401). If the determination result is YES, the following processing is skipped. On the other hand, when the determination result is NO, the operation of the individual on / off setting means is determined (S402). When the determination result is YES, the on / off setting state of the automatic control function is reversed (S403), This on / off setting state (automatic state) is stored in the nonvolatile memory 10 (S404). If it is the change mode (S405), the switched ON / OFF setting state is stored in the nonvolatile memory 10 as a default value (S406). Further, a check condition (forced cutting condition) is determined (S407), and if this is satisfied, the front wheel double speed control is forcibly turned off regardless of the current on / off setting state (S408). This check condition determination process is executed regardless of whether or not the setting is prohibited.

According to the present embodiment configured as described, the control device 5 is configured to be able to shift at least between the traveling mode and the working mode by the mode switching means (mode switching switch 14), and work in the working mode. A work switching means (work switch 19) for selecting a type is provided, and in the travel mode, an automatic control function that is not required when traveling on the road , that is, a depth control function, a tilt control function, a backup control function, and a turn-up control function. a front wheel speed control function, and with prohibits control operation of the automatic brake control function, the working mode, to allow the on-off setting of each automatic control functions on the work each type selected by the work switching means, said input set to allow control operation of the automatic control function, since the prohibiting control operation of the switching set auto-control function, the working mode Information, it is possible to set the automatic control function corresponding to the operator's preference for each work type. Further, by performing appropriate setting for each work type, it is possible to avoid the inconvenience that the setting of the automatic control function becomes inappropriate due to the switching of the work type.

In addition, since the control device 5 includes a setting mode for returning the on / off setting of the automatic control function in the work mode to a preset value set in advance for each work type, even if an erroneous setting is made in the work mode, the setting mode By simply shifting to, the automatic control function ON / OFF setting in the work mode can be easily returned to the default value.

Further, the control device stores the automatic control function on / off setting in the work mode in the nonvolatile memory 10 for each work type, switches from the power-off state to the power-on state, and shifts to the work mode by the mode switching means. The automatic control function on / off setting in the work mode is the previous setting stored in the non-volatile memory 10 for each work type, so the automatic control function on / off set by the operator for each work type is set. This setting can be reproduced in the next work.

It is a side view of a tractor. It is a block diagram of a control apparatus. It is a front view of a main panel. It is a top view of a side panel. It is explanatory drawing which shows the transition of a control mode. It is explanatory drawing which shows the setting content of each control mode. It is explanatory drawing which shows the initial value for every work classification. It is a flowchart which shows the main routine of a control apparatus. It is a flowchart which shows the initialization routine of a control apparatus. It is a flowchart which shows the mode switching control routine of a control apparatus. It is a flowchart which shows the front-wheel double speed control routine of a control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Operation part 5 Control apparatus 10 Non-volatile memory 13 Main panel 14 Mode change switch 15 Backup switch 16 Turning up switch 17 Front-wheel double speed and autobrake switch 18 Side panel 19 Work change switch

Claims (3)

A work vehicle having a plurality of automatic control functions, including a depth control function for automatically controlling the working depth of the work implement, a tilt control function for automatically controlling the right and left tilt of the work implement, A backup control function that automatically raises the work implement according to the turn, a turn-up control function that automatically raises the work implement according to the turning of the machine, and a front wheel double speed that drives the front wheels at double speed as the machine turns A control function and an autobrake control function that automatically brakes the rear wheels inside the turn according to the turn of the fuselage, and the control device for the work vehicle includes a mode switching means comprising a single push button switch by, with migratable configured to a working mode and at least the running mode, comprising a work switching means for selecting a work type in the work mode, in the traveling mode, before Depth control function, tilt control function, a backup control function, turning up control function, the front wheel speed control function, and prohibits the control operation of the automatic brake control function, and in the work mode, the work type selected by the working switching means wherein while allowing the on-off setting of the auto-control function for each, and characterized in that to allow controlled actuation of the input set auto-control function, inhibits the control operation of the switching set auto-control function Work vehicle. 2. The work vehicle according to claim 1, wherein the control device includes a setting mode for returning an on / off setting of the automatic control function in the work mode to a preset value set in advance for each work type. The control device stores the automatic control function on / off setting in the work mode in a nonvolatile memory for each work type, switches from a power-off state to a power-on state, and shifts to the work mode by the mode switching means. was when the working vehicle according to claim 1 or 2, characterized in that the on-off setting of the auto-control function in the working mode, the settings that are stored in the nonvolatile memory for each work type.

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