Tractor display device

Abstract

To provide a display device for a tractor that displays the states of a work machine connected to the tractor in an easy-to-understand manner.SOLUTION: A display device for a tractor includes: a work machine display unit D1 that shows an operation status of a work machine 100 in the center of a screen of a display 210; a depth display unit D3 that displays a working depth of the work machine 100 in a right area of the display area of the work machine display unit D1, a tilt display unit D4 that displays a tilt of the work machine 100 in an area lower than the display area of the work machine display unit D1; various sensors that detect the states of the work machine such as the operation state of the work machine 100, the working depth of the work machine, and the tilt of the work machine; switches C1 to C5 that switch various display contents on the screen; and a control unit that controls the display units D1 to D4, the sensors, and the switches C1 to C5.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a display device for a tractor capable of displaying the state of a working machine attached to the tractor.

Background Art

[0002] For a tractor, an agricultural working machine such as a rotary tiller is attached as a working machine. The agricultural working machine attached to the tractor is usually attached to the rear side of the tractor to perform agricultural work. Therefore, in order to visually confirm the state of the agricultural working machine, the operator needs to face the rear side and check the agricultural working machine on the rear side of the tractor. At this time, by performing display by some display device at the operator's hand and performing the state and operation of the agricultural working machine, more accurate agricultural work can be performed.

[0003] Patent Document 1 describes a configuration in which, in a remote control system for an agricultural working machine, different agricultural working machines can be operated by changing an operation display screen for each type of working machine on a touch panel unit.

[0004] Further, Patent Document 2 proposes a display device that displays the state of a working machine such as a rotary tiller connected to the rear side of a tractor, for example, the storage state, the work standby state, the depth of the working machine during work, the inclination of the working machine, etc.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Although Patent Document 1 describes operation display screens that vary depending on the model, it does not describe displaying changes in the status of agricultural implements attached to the tractor.

[0007] Regarding Patent Document 2, there was room for improvement in terms of the clarity of the display and the clarity of the corresponding operation.

[0008] This invention has been made in view of the above-mentioned problems, and is a tractor display device that can clearly display the status of implements attached to the tractor. Propose It is intended for use in the public. [Means for solving the problem]

[0009] The tractor display device according to the present invention is a tractor display device that displays various information about implements connected to a tractor on a screen, and is characterized by comprising: an implement display unit that displays the operating status of the implement on the screen; a depth display unit that displays the working depth of the implement in either the left or right region of the implement display unit; a tilt display unit that displays the tilt of the implement in either the upper or lower region of the implement display unit; and a control unit that controls each of the display units.

[0010] In this tractor display device, the implement has a configuration that includes an opening and closing section. The operating status of the work machine displayed by the work machine display unit includes at least one of the following: the work machine open state with the opening / closing part open; the work machine opening / closing operation in progress with the opening / closing part in the process of opening / closing; and the work machine closed state with the opening / closing part closed.

[0011] In this tractor's display device, a work type display unit is provided in the area to the left or right of the depth display unit, which displays the type of work performed by the implement.

[0012] In this tractor display device, the implement is configured to have a pressurizing section that becomes pressurized, and when the part of the implement display unit corresponding to the pressurizing section is selected, a pressurizing state display unit is provided to display the pressurized state of the pressurizing section.

[0013] In this tractor display device, the implement is configured to have a plurality of opening / closing parts, and the display device operation display unit is provided in one of the upper, lower, left, or right areas of the screen, which includes at least one of the following: a lock state operation unit for selecting and setting the locked or unlocked state of the opening / closing parts; an opening / closing part selection operation unit for selectively setting which of the plurality of opening / closing parts will perform the opening / closing operation; and an opening / closing operation unit for executing the opening / closing operation of the opening / closing parts.

[0014] Furthermore, the tractor display device is a tractor display device that displays various information about an implement equipped with an opening and closing section on a screen, and is characterized by comprising: an implement display section in the center of the screen that shows the operating status of the implement; a depth display section in either the left or right area of ​​the implement display section that shows the working depth of the implement; a work type display section in either the left or right area of ​​the implement display section that shows the type of work the implement does; a tilt display section in either the upper or lower area of ​​the implement display section that shows the tilt of the implement; an implement operation section in either the upper or lower area of ​​the implement display section that operates the implement; a pressurized state display section in either the upper or lower area of ​​the implement display section that shows the pressurized state of the pressurized section of the implement; and a control unit that controls each of the display sections. [Effects of the Invention]

[0015] According to the present invention, there is provided a display device for a tractor that displays various information of a working machine connected to the tractor on a screen, comprising: a working machine display unit that displays the operating status of the working machine at the center of the screen; a depth display unit that displays the working depth of the working machine in one of the left and right regions of the working machine display unit; and a tilt display unit that displays the tilt of the working machine in one of the upper and lower regions of the working machine display unit. The display device further includes a control unit that controls each display unit, and can display the state of the working machine connected to the tractor on the screen in an easily understandable manner.

Brief Description of the Drawings

[0016] [Figure 1] Side view showing a tractor and a working machine according to the present invention. [Figure 2] Rear view showing the state of use (fully extended) of the working machine according to the present invention. [Figure 3] Rear view showing the stored (folded) state of the working machine according to the present invention. [Figure 4] Rear view showing the state where the working machine according to the present invention is raised. [Figure 5] Block diagram showing the configuration of the display device for the entire tractor and working machine according to the present invention. [Figure 6] Explanatory diagram showing one aspect of the display state on the display according to the present invention (side rake open). [Figure 7] Explanatory diagram showing another aspect of the display state on the display according to the present invention (extension rake open). [Figure 8] Explanatory diagram showing a modification of the display state on the display according to the present invention. [Figure 9] Explanatory diagram showing yet another aspect of the display state on the same display (during opening and closing of the side rake). [Figure 10] Explanatory diagram showing yet another aspect of the display state on the same display (side rake closed). [Figure 11] Flowchart showing the operation flow of the display device according to the present invention. [Figure 12] (A) to (C) are transition diagrams showing the operation of the opening and closing operation unit according to the present invention.

Best Mode for Carrying Out the Invention

[0017] <Embodiment> Next, embodiments of the invention will be described with reference to the drawings. FIG. 1 is a side view showing a tractor 10 and a working machine 100 according to an embodiment of the present invention.

[0018] 1. [Configuration of Tractor] The tractor 10 shown in FIG. 1 can mount various working machines 100 such as a rotary, a harrow, a loader, a plow, a box scraper, etc. on the vehicle body 11 as needed, and perform various operations by the working machine 100 supported by the vehicle body 11. In FIG. 1, an example using a harrow for tilling is shown as the working machine 100. In the following description, when simply referring to "left side", "right side", etc., it means the left side and the right side in the direction in which the tractor 10 moves forward.

[0019] As a general configuration, the tractor 10 includes a vehicle body 11, a pair of left and right front wheels 12, a pair of left and right rear wheels 13, a cab 30, a control device 50, a tractor-side sensor A, and a display device 200 including a display 210, as shown in FIGS. 1 and 5. A bonnet 14 is arranged at the front of the vehicle body 11, and an engine 15 is arranged inside the bonnet 14.

[0020] A transmission case 16 is arranged between a pair of left and right rear wheels 13. The output of the engine 15 is transmitted to the front wheels 12 and the rear wheels 13 after being shifted by a hydraulic transmission device (not shown) arranged inside the transmission case 16.

[0021] A pair of lower links 18 are arranged on the rear part of the transmission case 16, and one top link 19 is arranged. Further, a PTO shaft 20 protrudes from the rear part of the transmission case 16. The working machine 100 is connected to the lower links 18 and the top link 19 and is driven by the PTO shaft 20.

[0022] The rear of the vehicle body 11 is provided with a work implement lifting mechanism 25, a work implement angle changing mechanism 26, and a connecting member 28.

[0023] The work equipment lifting mechanism 25 comprises a pair of left and right lift arms 21 and a lift cylinder (work equipment lifting section) 22 configured as a hydraulic cylinder. The tip of one of the left and right lift arms 21 is connected to one of the lower links 18 via a link member 23, and the tip of the other lift arm 21 is connected to the other lower link 18 via a rolling cylinder 24, which will be described later. With this configuration, the height at which the work equipment 100 is supported by the vehicle body 11 can be changed by driving the lift cylinder 22.

[0024] The work implement angle changing mechanism 26 includes a rolling cylinder 24 configured as a hydraulic cylinder. The rolling cylinder 24 is positioned to connect the right-side lift arm 21 and the right-side lower link 18 of a pair of left and right arms. With this configuration, by driving the rolling cylinder 24, the tilting posture in the left-right direction relative to the vehicle body 11 can be changed.

[0025] The connecting member 28 is a member for connecting the lower link 18 and the top link 19 with the work machine 100.

[0026] Above the transmission case 16 and behind the bonnet 14, a cabin 30 for the operator is located. Inside the cabin 30, there is an instrument panel 31 that can display the travel speed, engine speed, status of the work equipment, warning lights, etc. This information may also be displayed on a display 210 located in the cabin 30.

[0027] Furthermore, a driver's seat 32 is provided inside the cabin 30, and various operating devices are provided near the driver's seat 32.

[0028] The implement 100 is a harrow used for puddling. Puddling is the process of breaking up the soil and leveling the surface of a field after it has been flooded with water.

[0029] As shown in Figure 1, the work implement 100 is equipped with a connecting part 2 for connecting the work implement 100 to a connecting member 28 provided at the rear of the vehicle body 11. The connecting part 2 may be configured to connect directly to the lower link 18 and the top link 19 without going through the connecting member 28.

[0030] A tilling cover 102 is provided behind the connecting member 28. A tilling rotation shaft 103 is rotatably mounted on the tilling cover 102. The tilling rotation shaft 103 rotates with its axis of rotation in the left-right direction by power transmitted from the PTO shaft 20 via a power transmission mechanism (not shown in the figure). Multiple tilling tines 104 are connected to the tilling rotation shaft 103 in a left-right direction. With this configuration, the tilling tines 104 rotate together with the tilling rotation shaft 103, allowing the soil in the field to be broken up.

[0031] A leveling plate (sometimes called a "rake") 105 is positioned at the lower rear of the tilling cover 102. The leveling plate 105 is mounted to the tilling cover 102 so as to rotate as a pivot axis. The leveling plate 105 is also biased and pressurized downward by a biasing member (e.g., a hydraulic cylinder or electric motor) not shown in the figure. This configuration allows the field surface to be leveled. As shown in Figure 2, extension leveling plates (sometimes called "side rakes") 106 are provided on the left and right outer sides of the leveling plate 105 to widen the leveling width.

[0032] 2. [Configuration of tractor-side control device and tractor-side sensor] The control device 50 includes a control unit 51, a communication unit 52, and a display control unit 53. On the other hand, the tractor-side sensor A includes a work implement depth (height) sensor A1, a 3P sensor A2, and a tilt sensor A3 for the tractor 10, among others.

[0033] (Tractor-side control device) The control unit 51 is connected to the outputs of the aforementioned implement depth (height) sensor A1, 3P sensor A2, and tilt sensor A3, whose input is tractor-side sensor A.

[0034] (Tractor-side sensor) The work equipment depth (height) sensor A1 is a sensor that detects the height of the work equipment 100, and for example, it is a sensor that detects the position of the cylinder rod of the lift cylinder 22 (length of the lift cylinder 22).

[0035] The 3P sensor A2 detects the amount of extension and retraction of the hydraulic cylinder for horizontal control, and is a sensor that detects how the entire implement 100, including the lower link for lifting the implement 100 such as a rotary tiller, the top link for determining the front and rear posture of the implement 100, and the hydraulic cylinder for horizontal control, is tilted horizontally relative to the tractor 10.

[0036] The tilt sensor A3 is a sensor for detecting the tilt of the tractor 10, specifically the tilt of the tractor 10 relative to the ground.

[0037] The control unit 51 controls the height at which the implement 100 is supported by the vehicle body 11 (implementation height) by controlling a solenoid valve located between the lift cylinder 22 and the hydraulic pump. The implementation height can be divided into a lowered position, which is the height when working in the field, and an elevated position, which is higher than the lowered position and is the height of the implement 100 when traveling. The control unit 51 also controls the tilting posture of the implement 100 in the left-right direction by controlling a solenoid valve located between the rolling cylinder 24 and the hydraulic pump.

[0038] The communication unit 52 performs communication processing with the work machine side communication unit 152 on the work machine side control device 150, which is installed on the work machine 100. The communication unit 52 may be configured to perform wired communication or to perform wireless communication as in this embodiment. As a result, the control device 50 can receive information from the work machine side control device 150.

[0039] The display control unit 53 performs control to display information related to the work machine 100 on the display 210 or the like.

[0040] 3. [Configuration of the work equipment] The work machine 100 is equipped with a work machine-side control device 150 and a work machine-side sensor B. The work machine-side control device 150 comprises a work machine-side control unit 151 and a work machine-side communication unit 152.

[0041] The implement-side control unit 151 collects data from the implement-side sensor B and sends this data wirelessly to the control device 50 on the tractor 10 side via the implement-side communication unit 152.

[0042] The implement-side communication unit 152 performs communication processing with the tractor-side communication unit 52. The communication method of this communication unit 52 may be a wired communication method such as CAN (Controller Area Network) communication, or a wireless communication method such as Wi-Fi (Wireless Fidelity) or Bluetooth. In this embodiment, information is exchanged via wireless communication.

[0043] The work machine side sensor B is equipped with various sensors, for example, in this embodiment, as will be described in detail later, an open / closed state detection sensor B1 and a leveling plate rotation angle sensor (hereinafter referred to as "tilt (depth) sensor B2"). In this embodiment, the information transmitted to the control device 50 includes, for example, the type of work machine 100 (rotary, harrow, etc.), special functions of the work machine 100 (for example, whether or not it has a storage function), the detected value of the open / closed state detection sensor B1, the detected value of the tilt (depth) sensor B2, etc. Details of these sensors B will be described later.

[0044] Furthermore, as shown in Figures 2 and 3, the work machine 100 is configured to be openable and closable. Specifically, the implement 100 has a three-part structure and comprises a central tilling section 100A and left and right lateral tilling sections 100B. The central tilling section 100A and the lateral tilling sections 100B are each provided with a tilling cover 102, a tilling rotation shaft 103, tilling tines 104, and a leveling plate 105. The lateral tilling sections 100B are rotatably connected to the central tilling section 100A via a pivot shaft member (not shown). Specifically, the lateral tilling sections 100B are rotatably connected to the central tilling section 100A by a hinge section that constitutes an opening and closing means equipped with an opening and closing drive device. A locking mechanism is attached to the hinge section, and the lateral tilling sections 100B are fixed (locked) in an open or retracted state by the locking mechanism.

[0045] Furthermore, the central tilling section 100A and the lateral tilling sections 100B are connected by an opening / closing cylinder 107. By extending or retracting the opening / closing cylinder 107, the implement 100 can be switched between a stored state (Figure 3) and a usage state (Figure 2). The stored state is when the two lateral tilling sections 100B are positioned above the central tilling section 100A, that is, when the two lateral tilling sections 100B are folded and stored. The usage state is when the two lateral tilling sections 100B are positioned to the left and right of the central tilling section 100A to widen the working width. In the usage state, after operating the lift cylinder 22 shown in Figure 1 to lower the implement 100 (at the position of the lower dashed line in Figure 4), the implement 100 performs work on the field.

[0046] (Sensor on the work machine side) As shown in Figure 5, the work machine 100 is equipped with the following sensors B on the work machine side: an open / closed state detection sensor B1, a leveling plate rotation angle sensor (tilt (depth) sensor B2), and a work type detection sensor B3.

[0047] The open / closed state detection sensor B1 is a sensor that detects whether the implement 100 is in the stored state or in the use state (in other words, whether the lateral tilling section 100B is extended or not). The open / closed state detection sensor B1 is a limit switch and is configured to make contact with one of its parts and conduct electricity when the lateral tilling section 100B is in the stored state. Since the open / closed state detection sensors B1 are arranged in pairs on the left and right, the state of both the left and right lateral tilling sections 100B can be detected individually.

[0048] The tilt (depth) sensor B2 detects the rotation angle of the leveling plate 105 (in other words, how much the leveling plate 105 moved up and down during leveling). The tilt (depth) sensor B2 is a potentiometer that detects the rotation angle of, for example, the leveling plate 105 or a link attached to its rotation axis.

[0049] The work type detection sensor B3 detects which of the selectable types of work is currently set to be performed. For example, in this embodiment, two types of work can be selected: "puddling" and "hilling." The selection of these two types of work can be set by, for example, the operator manually selecting a work operation button located on the control panel near the meter panel 31 of the tractor 10. In this configuration, the work type detection sensor B3 can detect which work is currently set by detecting the output of a selection signal associated with this manual selection operation.

[0050] In this invention, for example, instead of directly transmitting the detection value of the open / closed state detection sensor B1 to the control device 50, the implement-side control unit 151 of the implement-side control device 150 may determine whether the implement 100 is in a stored state or in use state, and transmit the determination result to the control device 50. Alternatively, it is possible to mathematically calculate the tilling depth on the implement 100 side by performing calculations using trigonometric functions, for example, based on the tilt (depth) sensor B2 data and the resulting tilt angle. Once the depth for the implement 100 can be calculated, this depth data may be transmitted to the control device 50. As mentioned above, the structure of the three sensors (open / closed state detection sensor B1, leveling plate rotation angle sensor (tilt (depth) sensor B2), and work type detection sensor B3) is just an example, and other structures are also possible for the implement-side sensor B. For example, the open / closed state detection sensor B1 may be configured to detect the rotation angle of the pivot axis of the lateral tilling unit 100B, or it may be configured to detect the extension / retraction length of the open / closed cylinder 107. Furthermore, the work machine-side sensor B of the present invention may also include, for example, a left-right tilt detection sensor that detects the left-right tilt of the work machine 100, in addition to the embodiment described above. When this left-right tilt sensor is installed on the work machine 100, the detected left-right tilt information can be displayed on the display 210 of the display device 200.

[0051] 4. [Display device configuration] Next, the display device 200 of the tractor in this embodiment will be described with reference to Figure 5. 4.1 (Display device configuration) Figure 5 is a block diagram showing the overall configuration of a display device according to an embodiment of the present invention. The display device 200 of this embodiment generally comprises the aforementioned control device 50, tractor-side sensor A, and display 210 on the tractor 10 side, and an implement-side control device 150 and implement-side sensor B on the implement 100 side. Since the components other than Display 210 have already been explained, we will omit the explanation of those components here and focus on explaining Display 210.

[0052] 4.2 (Display Configuration) The display 210 in this embodiment is a touch panel type and includes a work machine display unit D1, a work type display unit D2, a depth display unit D3, a tilt display unit D4, a pressurization status display unit D5, a message display unit D6, and a work machine operation display unit C. The display control unit 53 provided in the control device 50 described above controls these display units and operation units.

[0053] In this embodiment, the display 210 of the display device 200 has a graphic section as shown below, which is a display section corresponding to the various devices provided by the tractor 10 and the implement 100. In other words, 1) Tractor graphic section T corresponding to tractor 10, 2) Working machine graphic section I corresponding to working machine 100, 3) Central tilling unit geometric part CP corresponding to the central tilling unit 100A, 4) Side tilling section (opening / closing section) 100B corresponding side tilling section geometric section SP, 5) Cultivator cover graphic section PC corresponding to cultivator cover 102, 6) Rake shape section R corresponding to leveling board (rake) 105, 7) Side rake shape section ER corresponding to extension leveling board (side rake) 106, 8) Hinge section figure H, which corresponds to the hinge section that is the connecting portion of the lateral tilling section 100B to the central tilling section 100A.

[0054] Furthermore, the display 210 has a function to display the type of work machine being used in the lower left corner of the screen and the current time in the lower right corner, but these are not particularly essential, and other display functions may also be included.

[0055] 4.2-1 (Work equipment display section) The implement display unit D1 has an implement graphic section I in the center of the display 210 screen that shows the operating status of the implement 100, based on the state detection information from the open / closed state detection sensor B1. For example, in this embodiment, the implement 100 connected to the tractor 10 has a lateral tilling section 100B that can be opened and closed via a hinge that constitutes an opening and closing mechanism. Corresponding to this configuration, the implement display unit D1 displays a lateral tilling section graphic section SP corresponding to the open or closed state of the lateral tilling section 100B. In addition, in this embodiment, a leveling plate 105 is provided at the bottom of the implement 100, and other leveling plates, i.e., extended leveling plates 106, are attached to both sides of the leveling plate 105. Corresponding to this configuration, the implement display unit D1 displays a rake graphic section R and side rake graphic sections ER on both the left and right sides of the rake graphic section R.

[0056] The open / closed states of the lateral tilling unit 100B and the extended leveling plate 106 include the following states: as shown in Figure 3, the lateral tilling unit 100B and the extended leveling plate 106 are folded (closed); as shown in Figure 2, the lateral tilling unit 100B is unfolded (open); and as shown in Figure 4, the extended leveling plate 106 is unfolded (open). These states are displayed on the implement display unit D1 in the same way as the actual machine, through the display modes of the lateral tilling unit graphic section SP and the side rake graphic section ER. Such situations can be intuitively and quickly read through the graphical screen display of the display 210, as shown in Figures 6 to 10.

[0057] There are three main types of display modes in the work equipment display unit D1 that correspond to the operating status of the work equipment 100. • The working machine is shown in the open state with the left and right lateral tilling sections 100B open (see Figures 6 and 7). • The state of the implement during opening and closing operation, showing the left and right lateral tilling sections 100B in the process of opening and closing (see Figure 9). • The working machine in the closed state, showing the left and right lateral tilling sections 100B closed (see Figure 10). These three embodiments are configured to be displayable on the work machine display unit D1.

[0058] Specifically, as shown in Figures 6 and 7, when the implement is open, the lateral tilling section graphic section SP is displayed open relative to the central tilling section graphic section CP. That is, the lateral tilling section graphic section SP is displayed to the left and right outside of the central tilling section graphic section CP, in a manner that extends the central tilling section graphic section CP outward to the left and right.

[0059] Furthermore, as shown in Figure 9, during the opening and closing operation of the work implement, the state in which the lateral tilling unit shape SP is in the process of rotating around the hinge part shape H relative to the central tilling unit shape CP is displayed. That is, the lateral tilling unit shape SP is displayed to appear as if it is floating above the left and right sides of the central tilling unit shape CP via the hinge part shape H.

[0060] Furthermore, as shown in Figure 10, when the implement is closed, the lateral tilling unit shapes SP are displayed closed relative to the central tilling unit shape CP. That is, the left and right lateral tilling unit shapes SP overlap the upper part of the central tilling unit shape CP, and together with the central tilling unit shape CP they are displayed as a single, integrated rectangular shape.

[0061] In this way, the display mode (display position, display angle, etc.) of the lateral tilling unit graphic section SP via the hinge unit graphic section H relative to the central tilling unit graphic section CP on the display 210 allows the open / closed state and the intermediate state of the opening / closing of the lateral tilling unit 100B on the implement 100 to be displayed according to the operation mode of the actual machine. In this embodiment, the configuration is not limited to displaying all three of the above modes, and a configuration that displays at least one of these three modes is also possible.

[0062] 4.2-2 (Work Type Display Section) The work type display unit D2 displays the selected status transmitted from the work machine 100. In this embodiment, the work type display unit D2 displays the work type of the work machine 100 in an area opposite to the depth display unit D3, with the work machine display unit D1 as the reference. In addition, as shown in Figure 6, the work type display unit D2 of this embodiment allows selection of two types of work: "puddling" and "earthing". Specifically, the work type display unit D2 has a puddling display unit D2a corresponding to puddling work and an earthing display unit D2b corresponding to earthing work. Specifically, the puddling display unit D2a is a display unit in which the word "puddling" and the "○" display unit to its left are enclosed in a frame. The earthing display unit D2b is a display unit in which the word "earthing" and the "○" display unit to its left are enclosed in a frame.

[0063] The work type display unit D2 indicates the selected state of either the puddling display unit D2a or the soil mounding display unit D2b by illuminating a "○" or coloring the entire frame of each display unit. Conversely, the unselected state of each display unit is indicated by turning off the "○" or making the entire frame of each display unit colorless. As for the display method of the work type display unit D2, for example, the entire frame of the selected display unit (either puddling display unit D2a or soil mounding display unit D2b) may be displayed relatively brighter than the frame of the unselected display unit.

[0064] Regarding the detection and display of these two types of work selections, for example, as in this embodiment, the work type detection sensor B3 may be used to detect and display whether either work is to be performed. However, if the selection is made using a work selection button (not shown) on the control panel near the meter panel 31 of the tractor 10, the work type may be detected from the operation of this selection button, and the information of the detected selected work may be output to the display 210.

[0065] Furthermore, in this embodiment, as described above, the operator can manually select the work operation button on the control panel of the tractor 10 to mechanically set and change the type of work. However, the puddling display unit D2a or the soil-mounting display unit D2b, which constitute the work type display unit D2, also function as the respective work switches. In other words, these display units also function as means of operation to actually mechanically change the type of work. For example, if the "soil-mounting switch" is turned ON while "puddling" is selected, the implement switches to soil-mounting work. Also, if the "puddling switch" is turned ON while "soil-mounting" is selected, the implement switches to puddling work.

[0066] 4.2-3 (Depth Indicator) The depth display unit D3 displays the working depth of the work implement 100 in either the left or right area of ​​the work implement display unit D1, based on depth information from the work implement depth (height) sensor A1. In this embodiment, the depth display unit D3 is located to the right of the center of the screen, as shown in Figures 6 to 10, but it may be located on the opposite side. The depth displayed here is a relative comparative display, where a reference level is set in the center, and the difference in height from that level is displayed as "depth" by moving an indicator up and down.

[0067] Therefore, it is first necessary to set a level that will serve as a reference for comparing depths. In this embodiment, as shown in Figures 6 to 9, a touch sensor TS1 named "reference setting" is provided near and directly below the depth display unit D3. By touching this sensor TS1, the height of the work machine 100 at that time is set as the reference and stored in a memory unit (not shown) located inside the display control unit 53. On the screen of the display 210, the work machine 100 at this time is displayed as having a depth of zero, with the index aligned to the center of the memory.

[0068] 4.2-4 (Tilt Indicator) The tilt display unit D4 calculates the tilt of the implement 100 based on data from the aforementioned 3P sensor A2 and tilt sensor A3, which detects the tilt of the tractor 10, and displays the tilt information of the implement 100 obtained from the calculation result in either the upper or lower area of ​​the implement display unit D1. In this embodiment, the tilt display unit D4 is installed in the area below the center of the screen, but it may also be in the upper area. The tilt displayed here is a relative value that graphically displays the actual "tilt" by tilting the implement, rather than displaying an angle, by setting a reference level as 0 degrees and then showing how much it is tilted to the left or right relative to that level. Therefore, it is first necessary to set a reference horizontal level.

[0069] In this embodiment, a touch sensor TS2 titled "Reference Setting" is provided near and directly below the depth display unit D3. By touching this sensor TS2, the orientation of the work machine 100 at that time is set to zero tilt as the reference horizontal level and stored in a memory unit (not shown) located inside the display control unit 53. Furthermore, the state of the work machine 100 at this time is graphically displayed on the screen of the display 210, with the work machine graphic unit I in a horizontal orientation.

[0070] 4.2-5 (Pressure level indicator) The pressurized state display unit D5 displays the pressurized state of the pressurized part of the work machine 100. In this embodiment, as shown in Figure 7, it is installed diagonally above the work machine display unit D1. In this embodiment, the pressurized state display unit D5 becomes active when information from a pressurized sensor (not shown) or the like, indicating the pressurized state of the leveling board 105, is input to the display control unit 53. It is also possible to display a pop-up message on the message display unit D6, which will be described next, with an explanation such as "rake pressurized". At the same time, as shown in Figure 7, a line L appears indicating which part of the work machine 100 is pressurized, and is displayed on the pressurized state display unit D5 facing the pressurized part.

[0071] 4.2-6 (Message display section) The message display unit D6 automatically displays messages as needed, based on control signals from the display control unit 53 on the tractor 10, to prompt warnings regarding operations, confirmations, etc.

[0072] 4.2-7 (Work equipment operation section) As shown in Figure 6, the work equipment operation display unit C is configured to have operation switches for operating the work equipment 100 in either the upper or lower area of ​​the work equipment display unit. The work equipment operation display unit C is a menu bar in which multiple operation display units for selectively executing predetermined operations on the work equipment 100 are displayed in series and arranged horizontally. In this embodiment, the work equipment operation display unit C is provided along the upper edge of the screen of the display 210. In this embodiment, a touch panel type is used for the display 210, so the work equipment operation display unit C functions as switches in the tabs displayed in the upper area of ​​the display 210.

[0073] As shown in Figure 6, the operation switches constituting the work machine operation display unit C of this embodiment are tab switches with the functions of left / right, main body opening / closing, side opening, side closing, and back, respectively, and five types of tabs are arranged side by side: left / right tab C1, main body opening / closing tab C2, side opening tab C3, side closing tab C4, and back tab C5.

[0074] The left and right tabs C1 constitute the opening / closing section selection operation unit as one of the selection menus for opening or closing operations for either or both of the left and right lateral tilling sections 100B of the implement 100 in the implement operation display unit C. Specifically, as shown in Figure 6, the left and right tabs C1 have a left selection display unit C1a that shows whether the left lateral tilling section 100B is selected and a right selection display unit C1b that shows whether the right lateral tilling section 100B is selected, arranged side by side. In this embodiment, the left selection display unit C1a and the right selection display unit C1b each have a "○" display unit below the words "left" or "right," and the display mode is such that the selected state is indicated by lighting up the "○" and the unselected state is indicated by turning off the "○". For example, by touching the tab corresponding to the lateral tilling unit 100B that you want to open or close, the selected lateral tilling unit 100B will be set to a state where it can be operated using the main unit open / close tab C2, the side open tab C3, and the side close tab C4. The display mode of the left selection display unit C1a and the right selection display unit C1b, which allow the selected lateral tilling unit 100B to be easily visible, may be such that the selected unit is displayed relatively brighter than the unselected unit.

[0075] Furthermore, the left and right tabs C1 of this embodiment do not merely function as one of the selection menus for opening and closing operations for either or both of the left and right lateral tilling sections 100B of the work machine 100. For example, in Figure 7, similar operation and display functions can also be provided for the left and right extension leveling plates 106. In that case, as shown in Figure 8, for example, in addition to the left and right selection display sections C1a and C1b, a left selection display section C1c that indicates whether the left extension leveling plate 106 is selected and a right selection display section C1d that indicates whether the right extension leveling plate 106 is selected may be provided side by side directly below them.

[0076] The main body opening / closing tab C2 constitutes a lock state operation unit, which is a switch for selecting and setting the lock or unlock operation for the opening / closing state of the lateral tilling unit 100B that makes up the opening / closing part of the work implement 100. By operating the main body opening / closing tab C2, the lock state and unlock state of the lock mechanism that locks the opening and closing operation of the lateral tilling unit 100B are switched.

[0077] The side opening tab C3 shown in Figure 6 constitutes the opening and closing operation unit, and is the operation unit for opening the extension leveling plate 106 selected by operating the left and right tabs C1. Here, "open" means to release (extend) the extension leveling plate 106 relative to the central tilling unit 100A as shown in Figure 2. For example, in Figure 6, the opening and closing of the lateral tilling unit 100B is performed by unlocking the main body opening / closing tab C2, then operating the sub-control valve for external hydraulic output on the tractor 10 side, and activating the opening / closing cylinder 107 shown in Figure 2.

[0078] Similarly, the side closing tab C4 shown in Figure 6 constitutes the opening and closing operation unit, and is the operation unit for closing the selected extension leveling plate 106 (see Figures 7 to 9) by operating the left and right tabs C1. Here, "closing" means folding the extension leveling plate 106 relative to the left and right lateral tilling units 100B (see Figure 10) by an opening and closing drive device (not shown), as shown in Figure 3.

[0079] The "Back" tab C5 returns you to the previous screen. In other words, it exits the screen displaying the work equipment information.

[0080] [Function and Effects of Display Devices] The operation of the display device 200, which has the configuration described above, will be explained with reference to the flowchart in Figure 11. The worker gets into the tractor 10 and turns on the power to the tractor 10 (Step 1 S1).

[0081] Then, the control device 50 of the tractor 10 determines whether or not horizontal and tilling depth information is transmitted from the implement 100 connected to the tractor 10 (second step S2).

[0082] As a result, for example, if the control device 50 determines that the above information has been transmitted from the work machine 100, it will display each of the received pieces of information on the display 210 of the display device 200 (third step S3).

[0083] On the other hand, if the control device 50 determines that the above information has not been transmitted from the work machine 100, it displays the data calculated by the control unit 51 on each display unit of the display 210 (fourth step S4).

[0084] (Operation and effects of the work equipment control unit) Furthermore, the specific operation of the work machine operation display unit C of the display device 200 of the present invention will be explained with reference to Figure 12.

[0085] For example, if you want to open (extend) the left and right lateral tilling sections 100B, perform the following operation. 1) Touch the left and right display sections c1a and c1b of the left and right tab C1. This activates the operation of the left and right lateral tilling units 100B. In this way, the display 210 can be easily set to a state where it is waiting for the control signal for the release operation of both the left and right lateral tilling units 100B. 2) Next, by touching the adjacent main unit opening / closing tab C2, the locked state can be released, and the hinge, which is the opening / closing part that was locked, becomes an active state that can be operated. In this way, the state of waiting for the input of the opening signal can be easily set on the display 210 side. 3) By operating the sub-control valve for external hydraulic output on the tractor 10 side and activating the opening / closing cylinder 107 shown in Figure 2, the left and right lateral tilling sections 100B rotate around the hinge and open. 4) After performing the above operations, the message display unit D6 will show the message, "After operation, press the main unit open / close button to lock." Following this instruction, simply lightly touching the main unit open / close tab C2 will lock the lateral tilling unit 100B in the open position. In this way, the lateral tilling unit 100B can be easily opened with a simple operation on the display 210.

[0086] In this embodiment, the display 210 allowed users to set each setting simply by touching the desired display area. However, for displays that are not touch-sensitive, the following operations can be used as alternatives. For example, by rotating a stick-type dial attached to the side of the display, the cursor can be moved to each display area on the screen, and that display area can be selected to be activated. Furthermore, if a pressure button is provided in the center of the aforementioned dial, the selected display area can be activated by pressing that pressure button.

[0087] In addition to the various display and operation units described above, the display of this embodiment is also configured to display the type of work machine currently in use in the lower left corner of the display 210, and the current time in the lower right corner, as shown in Figure 6, for example. The items that can be equipped on the screen of this display are not limited to those described above, and various other items can be provided.

[0088] It should be noted that the present invention is not limited to the embodiments described above, and also includes configurations in which the components disclosed in the embodiments described above are substituted for each other or their combinations are changed, known inventions and configurations in which the components disclosed in the embodiments described above are substituted for each other or their combinations are changed, and so on. Furthermore, the technical scope of the present invention is not limited to the embodiments described above, but extends to the matters described in the claims and their equivalents. [Explanation of symbols]

[0089] 2 Connecting part 10 tractors 11 Car body 12. A pair of front wheels (left and right) 13. A pair of rear wheels (left and right) 14. Hood 15 Engine 16 Transmission Case 18 Lower Link 19 Top Links 20 PTO shafts 21 Lift Arm 22. Lift cylinder (work equipment lifting mechanism) 23 Link members 24 Rolling Cylinders 25. Lifting mechanism for work equipment 26. Working machine angle adjustment mechanism 28 Connecting member 30 cabins 31 Meter Panel 32 Driver's seat 50 Control device 51 Control Unit 52 Communications Department 53 Display Control Unit 100 work machines 100A Central Cultivation Department 100B Side tilling section (opening / closing section) 102 Tiller cover 103 Tillage rotation shaft 104 Cultivating Claw 105 Ground leveling board (rake) 106 Extension leveling board (side rake) 107 Opening / Closing Cylinder 150 Work machine side control device 151 Work machine side control unit 152 Work machine side communication unit 200 Display device 210 displays (screens) A tractor-side sensor A1 Work machine depth (height) sensor A2 3P sensor A3 Tilt Sensor B. Sensor on the work machine side B1 Open / Close State Detection Sensor B2 Ground leveling plate rotation angle sensor (tilt (depth) sensor) B3 Work Type Detection Sensor C Work equipment operation display section C1 Left and right tabs (open / close selection operation section) C2 Main unit opening / closing tab (lock status operation section) C3 Side opening tab (opening / closing operation part) C4 Side closing tab (opening / closing operation part) C5 Back tab D1 Work equipment display section D2 Work type display area D3 Depth Indicator D4 Tilt Indicator D5 Pressure Status Indicator D6 Message display unit CP Central Cultivation Section Graphics Section ER extension leveling plate figure section H hinge part shape I. Working Machine Diagram Section PC Cultivation Cover Graphics Section R rake figure section SP Lateral Cultivation Section Figure T Tractor Shape Section

Claims

1. A tractor display device that displays various information about implements attached to the tractor on a screen, A work machine display unit that displays the operating status of the work machine on the screen, A depth display unit is provided in either the left or right area of ​​this work machine display unit to display the working depth of the work machine, The work machine display unit includes a tilt display unit that displays the tilt of the work machine in either the upper or lower region, A control unit that controls each of the aforementioned display units, Equipped with, The aforementioned work machine has a central part and opening / closing parts provided on the left and right sides of the central part that open and close, The operating status of the work machine displayed by the work machine display unit is as follows: The working machine is in the open state with the aforementioned opening / closing section open, The state of the work machine during the opening and closing operation of the opening and closing section, Includes a closed state of the work machine with the aforementioned opening / closing part closed. A tractor display device characterized by the following features.

2. The work machine display unit is provided with a work type display unit in the other area, either left or right, to display the type of work performed by the work machine. The tractor display device according to feature 1.

3. The aforementioned work machine has a configuration that includes a pressurizing section that is in a pressurized state, When the portion of the work machine display unit corresponding to the pressurizing unit is selected, the machine is equipped with a pressurizing state display unit that displays the pressurizing state of the pressurizing unit. A tractor display device according to claim 1 or 2.

4. The aforementioned work machine has a configuration that includes multiple opening and closing parts, In any of the top, bottom, left, or right areas of the aforementioned screen, A lock state operation unit for selecting and setting the locked or unlocked state of the opening / closing part, An opening / closing unit selection operation unit for selectively setting which of the multiple opening / closing units will perform the opening / closing operation, The work machine operation display unit includes at least one of the following: an opening / closing operation unit for performing the opening and closing operation of the opening / closing unit; and A tractor display device according to any one of claims 1 to 3.

5. A tractor display device for a tractor that connects to an implement equipped with an opening and closing mechanism, which displays various information about the implement on a screen, The screen includes a work machine display unit in the center that shows the operating status of the work machine, In either the left or right area of ​​this work machine display unit, a depth display unit is provided to display the working depth of the work machine, A work type display unit for displaying the type of work performed by the work machine is provided in the other area of ​​the work machine display unit, either left or right. A tilt indicator unit is provided in either the upper or lower region of the aforementioned work machine display unit to display the tilt of the work machine, In the upper or lower area of ​​the aforementioned work equipment display unit, there is a work equipment operating unit for operating the work equipment, A pressure status display unit is provided in the upper or lower region of the aforementioned work machine display unit, which displays the pressure status of the pressurizing section of the work machine. A control unit that controls each of the aforementioned display units, Equipped with, The aforementioned work machine has a central part and opening / closing parts provided on the left and right sides of the central part that open and close, The operating status of the work machine displayed by the work machine display unit is as follows: The working machine is in the open state with the aforementioned opening / closing section open, The state of the work machine during the opening and closing operation of the opening and closing section, This includes a closed state of the work machine with the opening / closing part closed, The pressurization status display unit displays the pressurization status towards the pressurized part of the work machine. A tractor display device characterized by the following features.

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