KR102394965B1 - Work vehicle - Google Patents

Abstract

An object of the present invention is to provide a work vehicle in which an operator can confirm, on the work vehicle side, which work machine is interlocked, and can also set which work machine is interlocked. To this end, the tractor 1 to which the work machine can be mounted, a liquid crystal panel 21 for selectively displaying the mounted interlockable work machine, and a liquid crystal panel 21 for identifiably displaying the interlocking work machine, and the liquid crystal panel 21 . The operation unit (encoder dial 22, enter button 23, and command buttons 24-28) for selecting, determining, and operating the work device displayed in A control device 3 for controlling to interlock and to interlock the work machine whose determination has been operated is provided.

Description

work vehicle {WORK VEHICLE}

The present invention relates to a work vehicle.

BACKGROUND ART Conventionally, a working vehicle such as a tractor for agricultural work or a wheel loader for civil work has been known. Some of these work vehicles are equipped with a work machine that matches the work content and are used. In addition, some work machines can be interlocked with a work vehicle. For example, a tractor is interlockable with a loader, a sprayer, a broadcaster, etc. (refer patent document 1).

In general, the work machine is provided with an interlocking switch for turning on/off interlocking with the tractor, and an indicator lamp indicating interlocking with the tractor, to operate and display the interlocking state with the tractor.

Patent Document 1: Japanese Patent Laid-Open No. 2004-329067

However, the tractor has no means for operating and displaying the interlocking state with the work machine. Therefore, it was necessary for an operator riding on the tractor to get off the tractor and move to the work machine to confirm and operate the interlocking state. In particular, when the work machines are mounted on the front and back at the same time, such as a loader and a midwife, the operator needs to go to both machines to check, which takes time.

An object of the present invention is to provide a work vehicle in which an operator can confirm which work machine is interlocked and set which work machine is interlocked on the work vehicle side.

According to the present invention, in a work vehicle to which a work machine can be mounted, a display unit for selectively displaying a mounted interlockable work machine and identifiably displaying an interlocking work machine, and selecting and determining the work machine displayed on the display unit and a control unit configured to operate, and a control unit configured to control such that, when a desired work machine is determined and manipulated by the manipulation unit, the interlocking work machine is made non-interlocked and the determined work machine is interlocked.

In the above-mentioned work vehicle, it is also possible to display a work machine that is not equipped with the display unit, but which can be interlocked, so that it can be identified and at the same time non-selectable.

Further, in the above-mentioned work vehicle, the control unit may control so as to detect the mounted interlockable work machine at a predetermined period.

Further, in the work vehicle, the operation unit may be a plurality of buttons and encoder dials provided integrally with the display unit.

In addition, in the above work vehicle, a shift lever connected to the control unit and a switch provided on the shift lever are provided, and when a sprayer is interlocked as the work machine, the switch provides a function to start/stop spraying of the sprayer, Any one function of the spraying amount adjustment function of the said atomizer, the expansion/contraction adjustment function of the boom of the said atomizer, the inclination adjustment function of the boom, the opening/closing adjustment function of the boom, and the raising/lowering adjustment function of the boom may be assigned.

In addition, in the work vehicle, a shift lever connected to the control unit and a switch provided on the shift lever are provided, and when a midwife is linked as the work machine, the switch provides a function to start/stop the spraying of the midwife. Alternatively, the spraying amount adjustment function of the midwife may be assigned.

According to the work vehicle of the present invention, by providing means for operating and displaying the interlocking state with the work machine on the work vehicle side, the operator can set and confirm the interlocking state with the work machine on the work vehicle side. Therefore, there is no need to get off the work vehicle and move to the work machine in order to confirm which work machine the operator riding in the work vehicle is interlocking with or to set which work machine is interlocked. , the work efficiency is improved.

On the other hand, in the work machine, if the means for operating and displaying the interlocking state with the work vehicle is omitted, the cost can be reduced. In addition, if the work machine is provided with means for operating and displaying the interlocking state with the work vehicle, the operator can set and confirm the interlocking state from either the work vehicle or the work machine, thereby improving convenience.

In addition, according to the work vehicle of the present invention, by displaying a work machine that is not mounted but can be linked in a identifiable way, the operator can identify the work machine at a glance, which is highly convenient. In addition, by making the non-mounted but interlockable work machine unselectable, it is possible to prevent the operator from erroneously selecting the work machine.

Further, according to the work vehicle of the present invention, by detecting the mounted interlockable work machine at a predetermined period, it is possible to display the latest state as to which work machine is in the interlockable state.

Further, according to the work vehicle of the present invention, by using a plurality of buttons and encoder dials provided integrally with the display unit as the operation unit, intuitively quick operation is possible.

Further, according to the work vehicle of the present invention, by configuring a switch provided on the shift lever to be able to assign a desired function for operating the work machine in linkage, when the operator operates the assigned function, releasing the shift lever There is no need, and it does not take time because it can be operated simply by hand. That is, the operability and work efficiency are improved, and the burden on the operator can be reduced.

1 is an external perspective view of a tractor;
FIG. 2 is a view viewed from arrow X in FIG. 1 .
Fig. 3 is a view seen from the arrow Y in Fig. 1;
FIG. 4 is a view viewed from arrow Z of FIG. 1 .
5 is a view showing a power transmission system of the tractor.
It is a figure which shows the link mechanism of a tractor.
It is a figure which shows the driver's seat of a tractor and its surroundings.
8 is a diagram illustrating an operator's field of view.
Fig. 9 is a diagram showing an information network of a tractor;
10 is a diagram illustrating a display.
It is a figure which shows the part related to the display in the control system of a tractor.
12 is a diagram illustrating a screen displayed on a display.
13 is a diagram illustrating a screen displayed on a display.
14 is a diagram illustrating a screen displayed on a display.
15 is a diagram illustrating a screen displayed on a display.
16 is a diagram illustrating a screen displayed on a display.
17 is a view showing a steering tool provided on an arm rest.
18 is a diagram showing an example of CAN.
It is a figure which shows the outline|summary of CAN connection of a tractor and a work machine.
20 is a block diagram showing the configuration of CAN in the tractor.
21 is a diagram illustrating a screen displayed on a display.
22 is a view showing an instrument panel.
23 is a diagram illustrating a screen displayed on a display.
It is a schematic diagram which shows control at the time of increasing the spraying amount of a sprayer, (a) is a schematic diagram which shows vehicle speed constant control, (b) is a schematic diagram which shows spraying pressure constant control.
25 is a diagram illustrating a screen displayed on a display.
26 is a diagram illustrating a screen displayed on a display.

The technical idea of the present invention can be applied to all work vehicles. Hereinafter, it will be described using a tractor, which is a typical work vehicle.

First, the tractor 1 will be briefly described.

1 shows a tractor 1 . FIG. 2 is a view viewed from arrow X in FIG. 1 , and FIG. 3 is a view viewed from arrow Y in FIG. 1 . 4 is a view seen from the arrow Z of FIG. 1 . In addition, the front-back direction, the left-right direction, and the up-down direction of the tractor 1 are shown in a figure.

The tractor 1 is mainly composed of a frame 11 , an engine 12 , a transmission 13 , a front axle 14 , and a rear axle 15 . The tractor 1 also has a cabin 16 . The cabin 16 has an inside of the cockpit, and an accelerator pedal 162, a shift lever 163, etc. are arranged in addition to the driver's seat 161 (refer to FIG. 7).

The frame 11 forms the skeleton of the front part of the tractor 1 . The frame 11 together with the transmission 13 or the rear axle 15 constitutes the chassis of the tractor 1 . In addition, a pair of work machine support parts 32 for supporting a work machine (eg, a loading machine) mounted on the front part of the tractor 1 are provided on the frame 11 .

The work machine support part 32 is composed of a plate-shaped member protruding outward from the left and right side surfaces of the frame 11 and extending upward, respectively. A hole and a cutout for mounting the work machine are formed in the upper portion of the work machine support part 32 .

The engine 12 is supported by a frame 11 . The engine 12 converts thermal energy obtained by burning fuel into kinetic energy. That is, the engine 12 produces rotational power by burning fuel. On the other hand, an engine control device is connected to the engine 12 (not shown). When an operator operates the accelerator pedal 162 (refer FIG. 7), the engine control apparatus changes the driving state of the engine 12 according to the operation. In addition, the engine 12 is provided with an exhaust purification device 12E. The exhaust purification device 12E oxidizes particulates, carbon monoxide, hydrocarbons, and the like contained in exhaust gas.

The transmission 13 transmits the rotational power of the engine 12 to the front axle 14 or the rear axle 15 . The rotational power of the engine 12 is input to the transmission 13 through a coupling mechanism. Meanwhile, the transmission 13 is provided with a continuously variable transmission (I-HMT) 131 (see FIG. 5 ). When the operator operates the shift lever 163 (refer to FIG. 7), the continuously variable transmission device 131 changes the operating state of the transmission 13 according to the operation.

The front axle 14 transmits the rotational power of the engine 12 to the front tire 141 . The rotational power of the engine 12 is input to the front axle 14 through the transmission 13 . On the other hand, the steering device is provided side by side on the front axle 14 (not shown). When the operator operates the steering wheel 164 (refer FIG. 7), the steering apparatus changes the steering angle of the front tire 141 according to the operation.

In addition, a hydraulic pump 142 is provided on the front axle 14 (see Fig. 5). When the operator operates the joystick 176 (refer to FIG. 7 ), the hydraulic pump 142 transmits hydraulic pressure to a working machine mounted on the front of the tractor 1 according to the operation.

The rear axle 15 transmits the rotational power of the engine 12 to the rear tire 151 . The rotational power of the engine 12 is input to the rear axle 15 through the transmission 13 . On the other hand, the rear axle 15 is provided with a PTO output device 152 (see Fig. 5). When the operator operates the PTO switch 165 (refer to FIG. 7 ), the PTO output device 152 transmits rotational power to a towing working machine according to the operation. Further, a link mechanism 35 is provided on the rear axle 15 (refer to Fig. 6).

Next, the power transmission system of the tractor 1 is demonstrated.

5 shows the power transmission system of the tractor 1 . However, this drawing briefly shows only the parts necessary for the description of the present invention.

As described above, the transmission 13 transmits the rotational power of the engine 12 to the front axle 14 or the rear axle 15 . That is, the transmission 13 has a mechanism for transmitting rotational power to the front axle 14 and a mechanism for transmitting rotational power to the rear axle 15 . Here, a mechanism for transmitting rotational power to the front axle 14 will be described as the front drive mechanism 33 .

The front drive mechanism 33 has a drive shaft 331 , a constant speed drive gear 332 , and a speed increase drive gear 333 . Further, the front drive mechanism 33 includes a constant speed clutch 334 , a constant speed driven gear 335 , a speed increase clutch 336 , and a speed increase driven gear 337 . The front drive mechanism 33 also has an output shaft 338 .

The drive shaft 331 is rotatably supported via a bearing. The constant speed drive gear 332 is mounted on the drive shaft 331 . A speed increase drive gear 333 is also mounted on the drive shaft 331 . For this reason, the constant speed drive gear 332 and the increase drive gear 333 rotate in the state integrated with the drive shaft 331. As shown in FIG.

The constant velocity clutch 334 is rotatably supported via a bearing. The constant speed driven gear 335 is mounted on the inner hub of the constant speed clutch 334 in a state meshed with the constant speed drive gear 332 . For this reason, the constant speed driven gear 335 rotates in the state integrated with the internal hub of the constant speed clutch 334. On the other hand, the speed increase clutch 336 is also rotatably supported via a bearing. The speed increase driven gear 337 is mounted on the inner hub of the speed increase clutch 336 in a state meshed with the speed increase drive gear 333 . For this reason, the speed increase driven gear 337 rotates in a state integrated with the internal hub of the speed increase clutch 336 .

The output shaft 338 is rotatably supported via a bearing. The constant velocity clutch 334 has an external cylinder mounted on the output shaft 338 . For this reason, the external cylinder of the constant velocity clutch 334 rotates in the state integrated with the output shaft 338. As shown in FIG. On the other hand, the speed increase clutch 336 also has an external cylinder mounted on the output shaft 338 . For this reason, the outer cylinder of the speed increase clutch 336 rotates in a state integrated with the output shaft 338 .

With this structure, when the inner hub of the constant speed clutch 334 and the outer cylinder are connected (when the constant speed clutch 334 operates), the rotation of the drive shaft 331 is transmitted to the output shaft 338 . Then, the propeller shaft 43 rotates and the front tire 141 rotates via the differential mechanism 34 . Thus, when the constant-speed clutch 334 is actuated and it is set as four-wheel drive, the circumferential speed of the rear tire 151 and the circumferential speed of the front tire 141 become the same (referred to as constant-speed four-wheel drive).

Similarly, even when the inner hub and outer cylinder of the speed increase clutch 336 are connected (even if the speed increase clutch 336 operates), the rotation of the drive shaft 331 is transmitted to the output shaft 338 . Then, the propeller shaft 43 rotates and the front tire 141 rotates via the differential mechanism 34 . In this way, when the speed increase clutch 336 is actuated for four-wheel drive, the circumferential speed of the front tire 141 becomes faster than the circumferential speed of the rear tire 151 (referred to as a speed-increasing four-wheel drive).

Next, the link mechanism 35 of the tractor 1 is demonstrated.

6 shows the link mechanism 35 of the tractor 1 . The link mechanism 35 includes a top bracket 351 mounted on the rear portion of the rear axle 15 and a top link 352 mounted on a hinge portion of the top bracket 351 . Further, the link mechanism 35 includes a lower bracket 353 mounted to the lower portion of the rear axle 15 , and a lower link 354 mounted to a hinge portion of the lower bracket 353 .

In addition, the link mechanism 35 includes a lift arm 355 mounted on the side of the rear axle 15, an elevating actuator 356 mounted on the central portion of the lift arm 355, and a left lift arm 355, A lift link 357 mounted on the lower link 354 and an actuator 358 for hardness mounted on the right lift arm 355 and the lower link 354 are provided.

With such a configuration of the link mechanism 35 , the work machine mounted on the tractor 1 is supported so as to be able to move up and down and tilt it by three links by the top link 352 and the two lower links 354 .

Next, the cockpit of the tractor 1 is demonstrated.

7 shows the driver's seat 161 and its surroundings. 8 shows the operator's field of view. 17 : has shown the control tool provided in the arm rest 161r.

As described above, the inside of the cabin 16 is a cockpit, and in addition to the driver's seat 161, an accelerator pedal 162, a shift lever 163, and the like are arranged. In addition, around the driver's seat 161, a brake pedal 166 or a clutch pedal 167, a reverse lever 168, a speed dial 169, an instrument panel 170, a control panel 171, A shift lever 172 , a work machine raising/lowering switch 173 , a work machine raising/lowering fine adjustment switch 174 , and the like are disposed. The operator may control the tractor 1 by operating the accelerator pedal 162 or the shift lever 163 while sitting on the driver's seat 161 .

The control panel 171 is arranged inside the arm rest 161r that can be opened and closed, and is connected to the control device 3 . The control panel 171 is an operation tool for performing various settings related to the work machine. By operating the control panel 171, the operator can perform various settings suitable for the connected work machine.

The shift lever 172 is disposed on the upper surface of the front portion of the arm rest 161r and is connected to the control device 3 . The shift lever 172 is rotatable and is shift-operated by being arbitrarily tilted by an operator. Accordingly, the operator can freely adjust the running speed.

The work machine lifting switch 173 is disposed on the front side of the shift lever 172 (refer to FIG. 17 ). The work machine lifting switch 173 is a slide-type switch for raising and lowering the work machine mounted on the rear of the tractor 1 . The work machine lifting switch 173 is connected to the control device 3 , and is configured to raise the work machine when the work machine lift switch 173 slides upward, and to lower the work machine when it slides downward. Accordingly, the operator can freely raise and lower the work machine mounted on the rear of the tractor 1 .

The work machine raising/lowering fine adjustment switch 174 is disposed on the left side of the shift lever 172 in a pair of upper and lower sides (refer to FIG. 17 ). The work machine lifting switch 174 is a pushable switch for raising and lowering the work machine mounted on the rear of the tractor 1 in a small range. The work machine raising/lowering fine adjustment switch 174 is connected to the control device 3 and is configured to raise the work machine in a minute range when the upper switch is pressed, and to lower the work machine in the micro range when the lower switch is pressed. Accordingly, the operator can freely raise and lower the work machine mounted on the rear of the tractor 1 . Accordingly, the operator may roughly adjust the height of the work machine with the work machine raising/lowering switch 173 and then finely adjusting the height of the work machine with the work machine raising/lowering fine adjustment switch 174 .

Further, a joystick 176 is disposed on the right side of the driver's seat 161 (refer to FIG. 7). The operator can operate the joystick 176 while sitting on the driver's seat 161 to control a work machine (eg, a loading machine) attached to the front of the tractor 1 .

Moreover, in this tractor 1, the display 2 is provided in the vicinity of the driver's seat 161. As shown in FIG. The display 2 is arranged in front of the right side of the driver's seat 161 so that the operator can operate it with the right hand. Hereinafter, the display 2 and the control system including the display 2 will be described in detail along with a brief description of the information network of the tractor 1 .

9 shows the information network of the tractor 1 . 10 shows a display 2 . FIG. 11 shows the part related to the display 2 in the control system of the present tractor 1 . The control apparatus 3 is provided with the storage part 31, and can memorize|store information necessary for control. In addition, you may provide the memory|storage part 31 outside the control device 3 .

In this tractor 1, an information network is spread out in each place so that the maximum performance may be exhibited. Specifically, in addition to the engine 12 , the transmission 13 , the instrument panel 170 , the control panel 171 , and the display 2 can share information with each other via a Controller Area Network (CAN) constitutes

In addition, as shown in FIG. 18, CAN is good also as a structure including a work machine. The information exchanged between the tractor 1 and the work machines A to C through communication includes, for example, the number of revolutions or water temperature of the engine 12, vehicle speed, speed of the vehicle, the state of the transmission 13, and the link mechanism ( 35) state (depth, inclination, etc.) and the like. And while the engine 12, the transmission 13, and the link mechanism 35 are integratedly controlled by the control apparatus 3, such information and a warning are displayed on the instrument panel 170 and the display 2. In this way, by exchanging various types of information between the tractor 1 and the work machines A-C, a high degree of control is attained. Thereby, operability and work efficiency can be improved, and the burden on an operator can be reduced.

19 is a diagram showing an outline of CAN connection between the tractor 1 and the work machine. As shown in FIG. 19 , the tractor 1 is provided with a control device 3 that is a tractor-side controller, and a work machine-side controller 5 for controlling the work machine is provided on the work machine, and a tractor-side controller and a work machine-side controller 5 are provided. ) is connected via the connecting connector 6 . As the connection connector 6, a connector of the AG-PORT standard or the ISOBUS standard can be used. Thereby, bidirectional communication between the tractor-side controller and the work machine-side controller 5 is enabled. Accordingly, for example, it is possible to allocate the operation of the work machine to a lever on the tractor 1 side, etc., and it is possible to realize operability with a sense of unity. In addition, wiring in the cabin 16 can also be reduced.

20 is a block diagram showing the configuration of CAN in the tractor 1 . In FIG. 20, the structure which CAN connection is possible for a loading machine, a sprayer, and a midwife as a work machine to the tractor 1 is mentioned as an example, and it demonstrates. The tractor-side controller, the control unit 3, includes the display 2, the connection connector 6, the engine 12, the transmission 13, the instrument panel 170, the control panel 171, and the shift lever 172 via CAN. ), a work machine lifting switch 173 , a work machine raising/lowering fine adjustment switch 174 , an operation panel 175 for a loading machine, a CAN interface 177 , and a controller 181 for a midwife are connected. Moreover, the joystick 176 is connected to the operation panel 175 for loading machines. The CAN interface 177 is connected to the operation panel 178 for sprayers, the controller 179 for spraying, and the controller 180 for boom operation.

The operation panel 175 for loading machines is a dedicated operation tool for setting the loading machine. An operator can perform various settings regarding a loading machine by operating the operation panel 175 for loading machines. Accordingly, the control device 3 can acquire information about the content set in the operation panel 175 for the loading machine. In addition, by operating the joystick 176, the operator can operate the loading machine according to various settings.

The CAN interface 177 is an interface for connecting the operation panel 178 for sprayers, the controller 179 for spraying, and the controller 180 for boom operation to the control device 3 via CAN, respectively.

The operation panel 178 for atomizers is a dedicated operation tool for setting the atomizer. By operating the operation panel 178 for atomizers, an operator can implement various settings (setting of the pesticide spraying amount per unit area, etc.) regarding a atomizer. Thereby, the control device 3 can acquire information regarding the content set by the operation panel 178 for atomizers.

The spraying controller 179 is for performing the opening/closing operation of the spraying valve which supplies an agricultural chemical to a spray nozzle. The control apparatus 3 acquires the information regarding the spray valve state set with the controller 179 for spraying, and controls the spray valve. Thereby, by operating the controller 179 for spraying, an operator can perform spraying start/stop of an agricultural chemical, and adjustment of a spraying amount.

The boom operation controller 180 is for operating the expansion/contraction adjustment of the boom, the inclination adjustment of the boom, the opening/closing adjustment of the boom, the raising/lowering adjustment of the boom, and the like. The control apparatus 3 acquires the information regarding the boom state set by the controller 180 for boom operation, and controls a boom. Thereby, an operator can perform expansion/contraction adjustment of a boom, inclination adjustment of a boom, opening/closing adjustment of a boom, raising/lowering adjustment of a boom, etc. by operating the controller 180 for boom operation.

The controller 181 for midwives is for operating the spray start/stop of the midwives, adjustment of the spraying amount of the midwives, and the like. The control device 3 acquires the information regarding the midwife state set by the controller 181 for midwives, and controls the midwives. Accordingly, by operating the controller 181 for the midwife, the operator can start/stop the spraying of the midwives, adjust the spraying amount of the midwives, and the like.

In the present tractor 1, the display 2 is arranged above the side console (see Figs. 7 and 8). The display 2 is integrally provided with a liquid crystal panel (display unit) 21, an encoder dial (operation unit) 22, an enter button (operation unit) 23, and five command buttons (operation unit) 24-28. (see FIG. 10).

The liquid crystal panel 21 is provided in the front center of the display 2 . The liquid crystal panel 21 can display a predetermined screen based on an instruction from the control device (control unit) 3 . For example, the liquid crystal panel 21 can display the opening screen S1 based on an instruction from the control device 3 (see Fig. 12). Further, the liquid crystal panel 21 can display other screens based on an instruction from the control device 3 (refer to Figs. 13 to 16). On the other hand, the display unit is not limited to the liquid crystal panel 21, and a thin display panel such as an EL panel using organic electroluminescence (EL) or inorganic EL may be used.

The encoder dial 22 is provided on the upper right side of the display 2 . The encoder dial 22 has a built-in rotary encoder, and when selecting an element (item) displayed on the liquid crystal panel 21, an operator's intention (selection operation) to scroll a tab or traverse a highlight display is a control device (3) can be forwarded. For example, the encoder dial 22 can transmit, to the control device 3 , the operator's intention to scroll the tab (refer to FIG. 13 ) when selecting a displayed number or alphabetic character. Further, the encoder dial 22 can transmit, to the control device 3, an operator's intention to traverse the highlight display, when selecting the displayed icon (see Figs. 14 to 16).

The enter button 23 is provided integrally with the encoder dial 22 . The enter button 23 is an operation button corresponding to the vertical movement of the encoder dial 22 , and is operated by pressing the upper surface of the encoder dial 22 . On the other hand, the enter button 23 may be a push button provided on the upper end surface of the encoder dial 22 .

The enter button 23 can transmit to the control device 3 an operator's decision (decision operation) to the effect that one element has been determined among the elements (items) displayed on the liquid crystal panel 21 . For example, the enter button 23 may transmit an operator's intention to the effect that one of the displayed numbers or alphabetic characters has been determined to the control device 3 (refer to FIG. 13 ). In addition, the enter button 23 can transmit an operator's intention to the effect that one of the displayed icons has been determined to the control device 3 (refer to FIGS. 14 to 16 ).

The five command buttons 24-28 are operation buttons for determining and manipulating icons displayed at the top of the screen. Each of the command buttons 24-28 is horizontally provided on the front upper part of the display 2 , and each command button 24-28 corresponds to an icon directly below displayed on the liquid crystal panel 21 . The command buttons 24-28 can transmit an operator's intention to the effect that the icon immediately below has been determined to the control device 3 . When any one of the command buttons 24-28 is pressed, the control device 3 executes a command corresponding to the icon. Icons and commands assigned to each of the command buttons 24-28 are different for each screen, and necessary icons and commands can be assigned to each screen.

As the command, a command instructing switching to the first home screen S3 (icon is 'HOME'), a command instructing switching to a shortcut screen (screen arbitrarily set by the operator) (icon is 'Free 1') ' or 'Free 2'), a command instructing the determination of one element like the enter button 23 (icon is 'decision'), and a command instructing switching to the previous screen (icon is 'return') , commands that indicate the direction in which to scroll the tabs or the direction to traverse the highlight display (icons are arrows indicating the direction), and the like.

In addition, you may provide a touch panel in the liquid crystal panel 21 as an operation part. In this case, the encoder dial 22, the enter button 23, and the command buttons 24-28 can be omitted as appropriate.

However, there are some work machines that can be interlocked with the tractor 1 , and when the work machine capable of interlocking is mounted on the tractor 1 , the tractor 1 and the work machine can be interlocked. Interlocking means that the tractor 1 operates optimally according to the operation of the work machine. In addition, the interlocking|interlocking may include that a work machine operates optimally according to the operation|movement of the tractor 1 . As a working machine that can be linked to the tractor 1 , there are a loading machine mounted on the front part, a sprayer or midwife mounted on the rear part, and the like.

For example, when a loading machine is attached to and linked to the tractor 1, the tractor 1 is automatically controlled to the optimum setting for the loading machine. As a specific example, to avoid danger, it is automatically controlled from an increased speed four-wheel drive to a constant-speed four-wheel drive. Moreover, when it is predicted that raising a loading machine next, such as when it detects that a loading machine has fallen, it controls so that the speed of raising of a loading machine may be raised by raising the rotation speed of an engine.

For this purpose, a list of work machines that can be linked is stored in the storage unit 31 . Then, the control device 3 reads a list of work machines that can be linked from the storage unit 31 , generates a work machine link screen S5 (refer to FIG. 16 ), and controls it to be displayed on the liquid crystal panel 21 . Work machine linkage is added as one of the menus to a screen on which a plurality of menus are selectably displayed (see, for example, the second home screen S4), and the work machine linkage is selected and determined and manipulated, so that the work machine linkage screen S5 can be displayed. In the work machine interlocking screen S5 , the mounted interlockable work machine is selectively displayed and the work machine being interlocked is identifiably displayed.

With "selectable", any means may be used as long as the operator can select a desired working machine. For example, a desired working machine can be selected by traversing the highlight display by operating the operation unit (encoder dial 22, enter button 23, command buttons 24-28). With 'identifiable', any means may be used as long as the operator can distinguish the working machine being interlocked. For example, it is identified by superimposing a mark indicating that it is interlocking (such as an ON display) on the icon of the work device being interlocked, and displaying a mark indicating that it is not interlocking (such as an OFF mark) on the icon of the work instrument being interlocked. can make it possible

On the other hand, an unmounted but interlockable working machine is identifiable and displayed as non-selectable at the same time. For example, by making the icon gray, it is possible to make it possible to identify what is not attached, and by controlling so that it cannot be selected by operation of the operation unit, it can be made non-selectable. Accordingly, since the operator is not equipped but can identify the work machine that can be interlocked at a glance, the convenience is high. Moreover, since the work machine which is not mounted|mounted cannot be selected, it can prevent an operator from selecting it erroneously.

The control device 3 accepts selection and decision operations by the operation unit (encoder dial 22, enter button 23, command buttons 24-28) on the work machine interlocking screen S5, and the work machine in which the decision operation was performed is controlled to be stored in the storage unit 31 .

Also, when a desired work machine is determined and manipulated on the work machine interlocking screen S5 , if there is a work machine that is interlocking, the control device 3 makes it non-interlocked and controls the determined and manipulated work machine to be interlocked. Accordingly, even in a state in which the work machine is mounted before and after the tractor 1 , only one work machine is linked at the same time, so that there is no inconvenience in controlling the tractor 1 .

In addition, the control device 3 controls to detect the mounted work machine in the interlockable state at a predetermined period (for example, every 10 seconds or when work machine interlocking is determined and operated on the second home screen S4, etc.) do. Whether or not it is in a state capable of interlocking can be determined, for example, by communication with the work machine. Accordingly, it is possible to always display the latest state on the work device interlocking screen S5.

As described above, by providing the display 2 for operating and displaying the interlocking state with the work machine in the tractor 1 , the operator can set and confirm the interlocking state with the work machine on the tractor 1 side. Therefore, in order to confirm which work machine the operator riding on the tractor 1 is interlocking with or to set which work machine to interlock with, there is no need to get off the tractor 1 and move to the work machine, and get on the tractor 1 Since it can be carried out with the same, work efficiency is improved.

On the other hand, in the work machine, if the means for operating and displaying the interlocking state with the tractor 1 is omitted, the cost can be reduced. In addition, if the work machine is provided with means for operating and displaying the interlocking state with the tractor 1, the operator can set and confirm the interlocking state with either the tractor 1 and the work machine, thereby improving convenience.

Hereinafter, a screen displayed on the display 2 in relation to the linkage between the tractor 1 and the work machine and a method of operating the display 2 will be described.

12 to 16 show screens displayed on the display 2 . However, each drawing has shown briefly only the parts necessary for description of this embodiment.

First, the opening screen S1 is displayed on the display 2 (refer to FIG. 12). In the opening screen S1, a symbol mark Sm is displayed in the vicinity of the center. The symbol mark (Sm) is a design symbolizing the manufacturer. The symbol mark Sm floats on the black background image and gives a strong impression to the operator.

Next, the lock release screen S2 is displayed on the display 2 (see FIG. 13 ). On the lock release screen S2, four scroll boxes Sb1 to Sb4 for inputting a password are displayed in one horizontal column. In the scroll boxes Sb1 to Sb4, any selected one is highlighted (refer to part H in the figure). In the scroll boxes Sb1 to Sb4, numbers from 0 to 9 or alphabetic characters from A to F can be scrolled up and down.

Further, on the unlock screen S2, icons 251·261·271·281 corresponding to the command buttons 25 to 28 are displayed at the upper end. Moreover, on the unlock screen S2, the dialog box Db1 in which the name of an operator is written, and the dialog box Db2 in which the name of a work machine is written are displayed. The operator can check whether the operator's name and the working machine name are set correctly in such a dialog box (Db1 · Db2).

The operator can select by scrolling a number or alphabetic character by rotating the encoder dial 22 , and can determine by pressing the enter button 23 . In addition, on the unlock screen S2, by pressing the command button 25·26, it is also possible to scroll and select a number or an alphabetic character, and to determine it by pressing the command button 27. It is also possible to cancel the decision by pressing the command button 28 . When the password is incorrect, a message to that effect is displayed.

Next, the first home screen S3 is displayed on the display 2 (refer to FIG. 14 ). On the first home screen S3, icons Ia1 to Ia10 for selecting a menu or page are displayed. One of the icons Ia1 to Ia10 being selected is highlighted (refer to part H in the figure). Then, the highlight mark is traversed according to the rotation of the encoder dial 22 . Icons that cannot be selected are grayed out (refer to part G in the drawing). In addition, on the first home screen S3, icons 242·252·262·272·282 corresponding to the command buttons 24-28 are displayed at the upper part.

A method of registering the icon 242 of 'Free 1' or the icon 252 of 'Free 2' will be briefly described by taking the registration of 'Free 1' as an example. First, if the command button 24 corresponding to the icon 242 of 'Free 1' is long pressed (for example, 3 seconds), it moves to a registration screen (not shown). Then, on the registration screen, operate the encoder dial 22 to select a desired icon (eg, an icon of 'OFF'), and press the Enter button 23, the icon is changed to the icon 242 of 'Free 1' is registered, and the icon is displayed instead of the display of 'Free 1'.

In the first home screen S3 , the operator can select the desired icons Ia1 to Ia10 by rotating the encoder dial 22 , and can determine by pressing the enter button 23 or the command button 27 . Here, it is determined by selecting the icon Ia10 in which 'next page' is written.

Next, the second home screen S4 is displayed on the display 2 (see FIG. 15 ). On the second home screen S4, icons Ib1 to Ib10 for selecting a menu are displayed. As for the icons Ib1 to Ib10, any one of the selected icons is highlighted (refer to part H in the figure). Then, the highlight mark is traversed according to the rotation of the encoder dial 22 . In the second home screen S4, icons 243·253·263·273·283 corresponding to the command buttons 24-28 are displayed at the top.

In the second home screen S4 , the operator can select the desired icons Ib1 to Ib10 by rotating the encoder dial 22 , and determine by pressing the enter button 23 or the command button 27 . Here, it is determined by selecting the icon Ib2 described as 'work machine linkage'.

Next, the work machine interlocking screen S5 is displayed on the display 2 (see FIG. 16 ). On the work machine interlocking screen S5, the work machine name and three icons Ic1 to Ic3 indicating ON or OFF are displayed. Further, on the work machine interlocking screen S5, icons 244·254·264·274·284 corresponding to the command buttons 24-28 are displayed at the upper part.

Icons Ic1 to Ic3 are a list of work machines that can be linked. The icons Ic1 and Ic3 indicate the mounted and interlockable work machines, and are displayed so as to be selectable. On the other hand, the icon Ic2 indicates a work machine that is not mounted but can be linked, and is displayed as non-selectable. Icon Ic2 is displayed in gray to indicate that it is not selectable. And, the non-selectable icon Ic2 is not selected by rotation of the encoder dial 22 .

Accordingly, on the work machine interlocking screen S5, the operator selects the desired icon Ic1 or Ic3 by rotating the encoder dial 22, and presses the enter button 23 to switch ON and OFF. Do. ON indicates interlocking, and OFF indicates non-interlocking.

In Fig. 16, since the icon Ic2 is not selectable, when the icon Ic1 or the icon Ic3 is determined and manipulated, the corresponding icon Ic1 or the icon Ic3 changes from ON to OFF if there is a working device that is interlocking. By changing, it indicates that it is not interlocking, and when the icon Ic1 or Ic3 corresponding to the work device that has been determined and operated changes from OFF to ON, it indicates that it is interlocking. Therefore, only one working machine is interlocked at the same time.

21 shows another example of the work device interlocking screen. Icons Id1 to Id3 are a list of work devices that can be linked. In this work machine interlocking screen S51, a highlight display is used (icon Id1) to selectably display the attached work machine which can be interlocked. In addition, in the work machine interlocking screen S51, in order to display the interlocking work machine identifiable, the image Id4 of the green lamp is superimposed and displayed on the icon of the interlocking work machine. In addition, in the work machine interlocking screen S51, the background of the icon is displayed in gray in order to display the work machine which is not mounted but which can be interlocked so that it is identifiable and non-selectable at the same time (icon Id2).

In addition, in order to notify the interlocking state, as shown in FIG. 22, you may provide the interlocking|interlocking lamp 170a in the instrument panel 170. As shown in FIG. When the tractor 1 and the work machine are interlocking, the interlocking lamp 170a is turned on, and when the tractor 1 and the working machine are interlocking, the interlocking lamp 170a is turned off. Accordingly, the operator can easily check whether the work machine is interlocking or not interlocking by looking at the instrument panel 170 .

Next, another characteristic configuration related to the interlocking of the tractor 1 and the working machine will be described. Hereinafter, a case where the working machine to be interlocked is a sprayer and a case where the working machine is a midwife will be described.

When the working machine being linked is a sprayer, the spray start/stop function of the sprayer, the spray amount adjustment function of the sprayer, the expansion and contraction adjustment function of the boom of the sprayer, the tilt of the boom to the machine lift switch 173 and the machine lift fine adjustment switch 174 Any one of the adjustment function, the opening/closing adjustment function of the boom, and the raising/lowering adjustment function of the boom can be assigned. On the other hand, when the work machine is not interlocking, the assignment becomes invalid.

The operator can set in advance which function is assigned to which switch. This setting can be performed, for example, on the display 2 . When the tractor setting (icon Ia3) is selected and determined on the first home screen S3, various setting items of the tractor are displayed, and the switch assignment setting of the sprayer is called from among them. Then, the switch assignment screen S6 as shown in FIG. 23 is displayed.

On the switch assignment screen S6, two icons (Ie1, Ie2) in which assignable switch names are described, and an icon ( Ie3, Ie4) are indicated. Icons Ie3 and Ie4 are displayed in a selectable manner. Further, on the switch assignment screen S6, icons 244·254·264·274·284 corresponding to the command buttons 24-28 are displayed at the upper part.

In the switch assignment screen S6, the operator operates the encoder dial 22 to select a desired icon Ie3 or icon Ie4, and presses the enter button 23. Accordingly, the displayed content of the selected icon can be scrolled by the encoder dial 22 . Then, the operator operates the encoder dial 22 to select a desired function, and presses the enter button 23 . The selected function is then assigned to the switch indicated by the icon displayed on the left.

As an example, in FIG. 23 , the spray start/stop of the sprayer is assigned to the work machine raising/lowering switch 173 . Specifically, when the work machine lifting switch 173 slides upward, spraying is started, and when it slides downward, spraying is stopped. In addition, the lifting/lowering adjustment of the boom is assigned to the work machine raising/lowering fine adjustment switch 174 . Specifically, when the upper switch of the work machine raising/lowering fine adjustment switch 174 is pressed, the boom is raised, and when the lower switch is pressed, the boom is lowered.

In this way, by configuring the switch (the work machine lifting switch 173 and the work machine raising/lowering fine-adjustment switch 174) provided in the shift lever 172 such that a desired function for operating the work machine in interlocking can be assigned, the operator can In the case of operating the function, there is no need to remove the hand from the shift lever 172 and operate the controller 179 for spraying or the controller 180 for boom operation, since it can be operated simply in the hand, it does not take time.

In addition, when the working machine to be interlocked is a sprayer, two methods of controlling the vehicle speed constant control and the spray pressure constant control are possible. The constant vehicle speed control is control such that, when the spraying amount is changed, the spraying pressure is adjusted to keep the vehicle speed constant. On the other hand, spray pressure constant control is control which adjusts a vehicle speed and sprays constant spray pressure, when a spray pressure is changed.

Fig. 24 is a schematic diagram showing two controls when the spraying amount is increased, wherein (a) shows constant vehicle speed control and (b) shows constant spray pressure control. As shown in Fig. 24(a) , in the constant vehicle speed control, when the target spraying amount per unit is increased, the vehicle speed is automatically maintained constant and the spraying pressure is automatically increased. On the other hand, as shown in FIG.24(b), in the spraying pressure constant control, if the spraying amount per target stage is increased, the vehicle speed will become low automatically, and the spraying pressure will be automatically maintained constant. According to the constant spraying pressure control, since the particle size does not change and the spraying state does not change when the spraying amount is changed, a highly accurate operation|work can be performed.

And, which control is implemented is comprised so that an operator can set beforehand. The setting of the control mode can be performed, for example, on the display 2 . When the tractor setting (icon Ia3) is selected and decided on the first home screen S3, various setting items of the tractor 1 are displayed, and the setting of the sprayer control mode is called from among them. Then, the control mode selection screen S7 as shown in FIG. 25 is displayed.

On the control mode selection screen S7, two icons (If1, If2) in which selectable control modes are described are displayed, and an image of a green lamp (If3) is displayed on the icon of the set control mode in order to identifiably display the set control mode. ) are superimposed. Further, on the control mode selection screen S7, icons 244·254·264·274·284 corresponding to the command buttons 24-28 are displayed at the upper part.

On the control mode selection screen S7 , the operator operates the encoder dial 22 to select a desired icon If1 or If2, and presses the enter button 23 . Thereby, an image If3 of a green lamp is displayed to the right of the selected icon, and the control mode described in the icon is set. 25 shows a state in which the vehicle speed constant control mode is set.

In addition, when the tractor 1 before a work start is stopped, the operator can set a spraying amount, an appropriate vehicle speed, and an appropriate spraying pressure. Since the position (traveling vehicle speed information) of the shift lever 172 can be checked while the tractor 1 is stopped on the control panel 178 for the sprayer, if the position of the shift lever 172 is adjusted, driving is only started thereafter. Do it.

When the interlocking work machine is a midwife, the spray start/stop function of the midwife or the spray amount adjustment function of the midwife can be assigned to the work machine lifting switch 173 and the work machine raising/lowering fine adjustment switch 174 . On the other hand, when the work machine is not interlocking, this assignment becomes invalid.

The operator can set in advance which function is assigned to which switch. This setting can be performed, for example, on the display 2 . If the tractor setting (icon Ia3) is selected and determined on the first home screen S3, various setting items of the tractor are displayed, and the switch assignment setting of the midwife is called among them. Then, the switch assignment screen S8 as shown in FIG. 26 is displayed.

On the switch assignment screen (S8), two icons (Ig1, Ig2) in which assignable switch names are written, and an icon ( Ig3, Ig4) are indicated. Icons Ig3 and Ig4 are displayed in a selectable manner. Further, on the switch assignment screen S8, icons 244·254·264·274·284 corresponding to the command buttons 24-28 are displayed at the upper part.

In the switch assignment screen S8, the operator operates the encoder dial 22 to select the desired icon Ig3 or Ig4, and presses the enter button 23. Accordingly, the displayed content of the selected icon becomes scrollable with the encoder dial 22 . Then, the operator operates the encoder dial 22 to select a desired function, and presses the enter button 23 . The selected function is then assigned to the switch indicated by the icon displayed on the left.

As an example, in FIG. 26 , the spray start/stop of the midwife is assigned to the work machine raising/lowering switch 173 . Specifically, when the work machine lifting switch 173 slides upward, spraying is started, and when it slides downward, spraying is stopped. In addition, adjustment of the spraying amount is assigned to the work machine raising/lowering fine adjustment switch 174 . Specifically, when the upper switch of the work machine lifting/lowering fine adjustment switch 174 is pressed, the spraying amount is increased, and when the lower switch is pressed, the spraying amount is decreased.

In this way, by configuring the switch (the work machine lifting switch 173 and the work machine raising/lowering fine-adjustment switch 174) provided in the shift lever 172 such that a desired function for operating the work machine in interlocking can be assigned, the operator can In the case of operating the function, there is no need to release the shift lever 172 and operate the midwife controller, and it does not take time because it can be easily operated in the hand.

<Industrial Applicability>

The present invention can be applied to a work vehicle such as a tractor for agricultural work or a wheel loader for civil work.

1: Tractor (work vehicle)
3: Control unit (control unit)
21: liquid crystal panel (display unit)
22: Encoder dial (operation panel)
23: Enter button (control panel)
24, 25, 26, 27, 28: Command button (control panel)
172: shift lever
173: work machine lift switch (switch)
174: work machine lift fine adjustment switch (switch)

Claims (3)

In the tractor to which a working machine can be mounted,
The operation of the operation unit of the tractor is configured to be interlocked with the operation of the working machine,
Selecting the work machine from a plurality of types of work machines, and forming a decision operation unit that can be switched to a state of interlocking with the selected work machine,
The tractor has a display unit,
The display unit has a setting screen for assigning and setting a function of the working machine to an operating tool formed in the operating unit of the tractor,
A display portion in which the name of the operation tool is written is disposed on either side of the setting screen,
A display portion in which the name of the function of the working machine is described is disposed on the other side of the setting screen,
The tractor according to claim 1, wherein the function assigned to the operation tool is made effective when the work machine is put into an interlocked state by the determination operation unit. The method of claim 1,
Forming a control unit for controlling the working machine determined in the interlocking state in the determination operation unit,
While the operation unit of the tractor is connected to the control unit,
When a sprayer is linked as the working machine,
In the said operation tool, the spraying start/stop function of the said sprayer, the spraying amount adjustment function of the said sprayer, the expansion/contraction adjustment function of the boom of the said sprayer, the inclination adjustment function of the boom, the opening/closing adjustment function of the boom, the raising/lowering adjustment function of the boom Among them, at least one function is assigned
Tractor characterized by. The method of claim 1,
Forming a control unit for controlling the working machine determined in the interlocking state in the determination operation unit,
While the operation unit of the tractor is connected to the control unit,
When a midwife is interlocked as the working machine,
At least one function of the spraying start/stop function of the midwife and the spraying amount adjustment function of the midwife is assigned to the operation tool
Tractor characterized by.

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