JP2006016916A - Display device for construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow an operator of a construction machine to intuitively and clearly recognize the role of a button. <P>SOLUTION: A monitor 13 consists of a screen part 13A and a button part 13B. The screen part 13A is divided into a first display region FA for displaying information for the construction machine and a second display region SA having fine band regions. The second display region SA is further divided into a plurality of section forming parts, which are provided corresponding to the buttons of the button part 13B. In each section forming part, an icon is displayed relating to the button of the button part 13B. The operator depresses the button corresponding to the icon. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device for a construction machine disposed in a cab of a construction machine such as a hydraulic excavator.

  For example, a construction machine such as a hydraulic excavator is configured such that a hydraulic pump is driven by an engine, and pressure oil output from the hydraulic pump is supplied to hydraulic cylinders and hydraulic motors attached to respective operating parts. Each of these operating parts is operated by an operator such as an operating lever when an operator gets on the driver's cab and performs operations such as excavation of earth and sand.

  Various instruments are provided in the operator's cab of the construction machine so that the operator can visually recognize the operation status of the construction machine. Examples of display by such instruments include a cooling water temperature gauge, a hydraulic oil temperature gauge, a fuel fuel gauge, an engine speed meter, and the like. In addition, an hour meter indicating the time during which the construction machine is operating, information on whether or not the gate lock lever is in a proper position, and the like can be displayed as appropriate. Display on a monitor such as a liquid crystal display.

  The various information described above is a screen (hereinafter, referred to as a machine status screen) that is mainly displayed during the work of the construction machine, but there are various setting screens for performing various settings. For example, work other than normal excavation work can be performed by exchanging the attachment of the front work machine from a bucket to a hook, breaker, grapp, or the like, but various settings need to be made depending on the application.

  As an example, a crane can be operated by using a hook for the attachment, but in order to prevent the machine from falling over at this time, so-called ML (Moment Limiter) function needs to be set. In addition, when working such as side grooving using an offset construction machine, so-called cab interference that restricts the operating range of the front work machine to prevent the front work machine from coming into contact with the cab. It is necessary to set the function. In addition, various settings such as setting of optional functions of construction machines other than attachment replacement, setting of screens, setting of e-mails sent and received between the management company managing the construction machines and the construction machines, and other various settings, etc. These various settings are performed on the setting screen after switching from the machine state screen to the setting screen as described above.

  In this way, in addition to setting various functions provided in the construction machine, an image of the surveillance camera that monitors the rear of the construction machine is displayed, and when an abnormality occurs in the construction machine, an alarm / The monitor plays an extremely important role because it can issue warnings and perform various functions. Such a monitor includes a screen unit for displaying a screen and a button unit for operating the screen. Therefore, as the function of the monitor increases, the information displayed on the screen section is very diverse, and the number of buttons for operating the information displayed on the display screen increases accordingly.

  By the way, it is preferable that the monitor such as a liquid crystal display has a compact shape as much as possible from the viewpoint of securing the field of view of the operator. Therefore, in order to secure a certain area of the display unit for displaying information, the area allocated for the button is inevitably narrowed. Along with this, when the number of buttons provided on the monitor is reduced and the role played by the buttons is increased, there is a problem that the absolute number of assigned buttons is insufficient. On the other hand, as the number of buttons increases, it becomes difficult for an operator to quickly find a target button from among many buttons, and there is a demand to suppress the number of buttons as much as possible from the viewpoint of operator operability. .

In view of this, among the plurality of setting items, a common button is used for each setting item (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 2002-67736

  In the invention of Patent Document 1 described above, buttons are shared to a certain extent. However, if there are a wide variety of operations that can be performed on a monitor, many buttons are required. In addition, since one button plays a different role depending on the case, the operator cannot easily grasp each role. For example, in Patent Document 1, the button “L” for selecting the crane mode plays a secondary role of “4” of the numeric keypad, but is essentially a button for selecting the crane mode. What is explicitly displayed to the operator is “L” indicating the crane mode. On the other hand, “4” of the numeric keypad has a secondary role, and therefore, “4” is displayed small diagonally above the button. Accordingly, the operator can find the button for selecting the crane mode relatively easily, but it takes time to find the button for selecting “4” of the numeric keypad, which is problematic from the viewpoint of operability. .

  Moreover, when the button configuration as in Patent Document 1 is adopted, there is a problem that it takes some time to find a button that plays a primary role. For example, when the crane mode is selected, the “L” button is pressed. At this time, a button “L” for selecting the crane mode from a group of buttons in which a plurality of buttons form rows and columns. "" Must be selected, so it cannot be found very quickly. Accordingly, there is a problem from the viewpoint of operability because it may take time for the operator to search for the target button for buttons that play a primary role as well as secondary ones.

  Therefore, the present invention provides a display of a construction machine that allows an operator to intuitively and quickly grasp the role of a button while suppressing an increase in the number of buttons due to one button playing multiple roles. An object is to provide an apparatus.

  A display device for a construction machine according to the present invention includes a screen portion on which a plurality of types of information are displayed so as to be switchable, and a button portion including a plurality of buttons provided at positions close to the screen portion. The screen section includes a first display area for displaying the information, and a second display area for displaying an icon indicating a role for operating the information displayed in the first display area. The button part is provided at a position close to the second display area, and at least one button of the button part plays a role of the icon.

  The present invention suppresses an increase in the number of buttons due to a single button playing a plurality of roles, and an operator can grasp the role of each button intuitively and quickly.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a view showing a hydraulic excavator as an example of a construction machine applied to the present embodiment. The construction machine of the present embodiment includes a crawler type lower traveling body 1, an upper swing body 2, excavation work means, and the like. The front work machine 3 is schematically configured. The upper swing body 2 is provided with a cab 4 for an operator to board and operate the machine. Inside the cab 4, traveling by the lower traveling body 1, the upper swing body is provided. Operation means including an operation lever for performing operations such as operation of the boom 3A, the arm 3B, and the bucket 3C constituting the front work machine 3 for performing operations such as turning by 2 and excavation of earth and sand are provided.

  Further, a monitoring camera 10 for securing a rear view is attached to the counterweight 5 at the rear position of the upper swing body 2 of this construction machine, and in the vicinity of the tip of the arm 3B in the front work machine 3 A camera 11 for confirming the excavation state is attached. Furthermore, an antenna 12 </ b> A for performing communication with the outside is provided in the upper part of the cab 4.

  The construction machine as described above is provided with a hydraulic mechanism that drives a hydraulic actuator such as an engine, a hydraulic motor, or a hydraulic cylinder in order to perform a normal excavation work. Are provided with an ML (Moment Limiter) function for preventing a fall and an interference preventing function for setting a limit of the operation range of the front work machine 3. Note that another function may be provided instead of or in addition to the two functions of the ML function and the interference prevention function.

  In order for the operator to use these functions, a monitor 13 as shown in FIG. 2 is installed inside the cab 4 of the construction machine. The screen of the monitor 13 usually displays machine state information mainly including instrument information such as the water temperature, oil temperature, and remaining amount of fuel of the construction machine, and uses functions such as ML function and interference prevention function. When this is done, a function screen for displaying information related to this function is displayed. Such a monitor 13 needs to be compact because it needs not to disturb the operator's field of view. As shown in FIG. 2, the monitor 13 is attached to the pillar 7, for example.

  Next, the monitor 13 will be described. The monitor 13 is composed of a liquid crystal screen or the like, and as shown in FIG. 3, a screen portion 13A for displaying various information and a button portion 13B for an operator to operate at a position close to the screen portion 13A. It is configured. The screen portion 13A is divided into a first display area FA and a second display area SA, and the second display area SA is formed as a thin band-like area at the bottom of the screen section 13A. Is divided into a plurality of sections. In the normal time, the water temperature gauge M1, the oil temperature gauge M2, and the fuel fuel gauge M3 are displayed in analog form in the first display area FA, and a clock M4 indicating the current time is displayed in the upper part. An hour meter M5 that is the operation time of the construction machine is displayed. In this embodiment, the screen on which these pieces of information are displayed is referred to as a machine state screen. However, since the oil temperature gauge M2, the clock M4, and the hour meter M5 are not necessarily required, the machine state screen includes at least the water temperature gauge M1 and What is necessary is just to have the fuel fuel gauge M3.

  In the present embodiment, as shown in FIG. 3, the second display area SA is divided into seven sections, and the divided sections are defined as section forming portions D1 to D7. The area of the screen portion 13A other than the second display area SA, which is a thin band-like area, is assigned to the first display area FA.

  The button unit 13B is a button pressed by an operator, and is configured to have nine buttons F1 to F9 located at the lower part of the screen unit 13A as shown in FIG. That is, the buttons F1 to F7 are arranged in a line immediately below the screen part 13A, and the buttons F8 and F9 are arranged in a line further directly below the button parts F1 to F7. Among these, the button F8 is a button for starting up a function for performing initial settings, and the button F9 is a button for projecting an image provided for securing a visual field behind the construction machine. These buttons F8 and F9 are not necessarily essential buttons.

  On the other hand, the buttons F1 to F7 are provided so as to correspond to the partition forming portions D1 to D7 directly above the buttons F1 to F7, respectively. In the partition forming portions D1 to D7, icons indicating the roles played by the buttons F1 to F7 located immediately below are displayed. For example, in FIG. 3, the icon IC6 “ML” displayed on the partition forming unit D6 is an icon for calling the ML function screen, and “interference” displayed on the partition forming unit D7. The icon IC7 is an icon for calling up the interference prevention function screen. That is, in this case, the button F6 plays a role for calling the ML function screen, and the button F7 plays a role for calling the interference prevention function screen. The operator presses the button F6 immediately below the icon IC6 “ML” when calling the ML function screen, and presses the icon IC7 “interference” when calling the interference prevention function screen. As a result, the operator only has to press the button directly below the icon, and thus can intuitively and quickly grasp the button to be pressed.

  Here, since the second display area SA is divided into seven sections, seven different icon ICs can be displayed simultaneously. Of course, the number of displayed icons is not limited to seven. However, when the number of icons that can be displayed decreases, the number of buttons corresponding to the icons also decreases, and the number of roles assigned to each button also decreases. On the other hand, when the number of icons to be displayed increases, the number of buttons corresponding to the icons also increases, which may cause the operator to press an unintended button, and there is a problem in the operability of the operator. Accordingly, although the number of icon ICs is seven, the number of icons may be slightly increased or decreased as long as the above-described problem is avoided.

  The monitor 13 is provided with a display control device 20 for performing display control of the screen unit 13A. As shown in FIG. 4, the display control apparatus 20 includes a ROM (Read Only Memory) 21, a CPU (Central Processing Unit) 22, a RAM (Random Access Memory) 23, a button input control unit 25, and a screen unit output control unit 26. A vehicle body communication unit 27, an icon display position storage unit 28, and a function screen storage unit 29 are connected via a bus 30.

  The ROM 21 is a storage device for storing a program for performing display control, the CPU 22 is a processing device for executing the program stored in the ROM 21, and the RAM 23 is used as a work area when the program is executed. Storage device. The button input control unit 25 is a control unit that outputs information to the CPU 22 when the buttons F1 to F7 are pressed. The screen unit output control unit 26 is a control unit for controlling the screen displayed on the screen unit 13A. The vehicle body communication unit 27 is performed between the information recording device 51, the engine control device 52, the hydraulic control device 53, the ML function device 54, the interference prevention function device 55, and the display control device 20, which will be described later, via the vehicle body network 60. This is a communication unit for controlling the exchange of information. The icon display position storage unit 28 is a storage unit for storing the type of icon currently displayed in each of the partition forming units D1 to D7. The function screen storage unit 29 is a storage unit for storing function screens such as an ML function screen and an interference prevention function screen. A cooling water temperature gauge 41, a hydraulic oil temperature gauge 42, and a fuel fuel gauge 43 are connected to the bus 30. The cooling water temperature gauge 41, the hydraulic oil temperature gauge 42, and the fuel fuel gauge 43 detect the cooling water temperature gauge 41. The cooling water temperature, the hydraulic oil temperature, and the remaining fuel amount are always sent to the display control device 20 as digital data.

  Here, an information recording device 51, an engine control device 52, a hydraulic pressure control device 53, an ML function device 54, and an interference prevention function device 55 are connected to the vehicle body network 60. Among these, the information recording device 51 is a function for recording the state of the engine, the hydraulic mechanism, etc., the engine control device 52 is a function for controlling the engine speed, etc., and the hydraulic control device 53 is This is a function for controlling a hydraulic mechanism such as a solenoid valve. Further, when carrying out the crane work, interference for setting limits on the operation range of the ML function device 54 and the front work machine 3 for displaying the actual load, the rated load, the work radius and the height of the suspended load on the monitor 13. The prevention function device 55 is connected to the vehicle body network 60. As described above, the ML function device 54 and the interference prevention function device 55 are provided in order to use the ML function and the interference prevention function. However, when another function is added, the device for realizing the function is designated as the vehicle body network 60. Connect to. Further, the other functions may be connected to the display control device 20 without being connected to the vehicle body network 60 and capable of inputting information to the display control device 20.

  In the display control device 20 as described above, the icons displayed on the partition forming units D1 to D7 are not fixed but variable, and the icon display position storage unit 28 stores the partition forming units D1 to D7 of the screen unit 13A. Each of them remembers which icon is currently displayed. Therefore, the display control device 20 can grasp the role of each button immediately below each icon. Therefore, when any of the buttons B1 to B7 is pressed, the display control device 20 plays a role based on the type of icon stored in the icon display position storage unit 28. Here, while the buttons B1 to B7 are fixedly provided, the icon immediately above them is variable, and the buttons B1 to B7 play various roles depending on the occasion. In other words, one button can play a plurality of roles by changing the icon immediately above it. Hereinafter, an icon for calling the ML function and an icon for calling the interference prevention function will be described as examples of roles played by the icon.

  First, the ML function will be described. For example, the ML function can be performed by attaching an attachment with a hook to perform a crane operation at the front end of the front work machine 3, and is provided for the purpose of preventing a fall during the crane operation. . The ML function screen displays four pieces of information: rated load, actual load, work radius, and suspended load height. Of these, the rated load refers to the limit value of the load of the suspended load, and the actual load refers to the actual load of the suspended load. These four pieces of information are calculated by the ML function device 54, and the calculation results are output to the display control device 20.

  For example, in a construction machine, a boom angle detector that detects an angle of the boom 3A (not shown), an arm angle detector that detects an angle of the arm 3B, a bottom pressure detector that detects a bottom pressure of a boom cylinder that operates the boom 3A, and When a rod pressure detector for detecting the rod pressure of the boom cylinder is provided, the values detected by these detectors are input to the ML function device 54, and the ML function device 54 holds itself as a fixed value. The rated load, the actual load, the working radius, and the height of the suspended load are calculated from the length of the boom 3A, the length of the arm 3B, and the value detected by each detector. When the operator uses the ML function, each value calculated by the ML function device 54 is transmitted to the display control device 20 via the vehicle body network 60.

  Next, the interference prevention function will be described. For example, when digging a gutter, the work is performed using an offset construction machine as shown in FIG. In FIG. 5, the offset construction machine is the same as the construction machine as shown in FIG. 1, the lower traveling body 1 and the upper swing body 2, but the front work machine 3 is different. In other words, the front work machine 3 of the offset construction machine includes a lower boom 3L that is provided so as to be pivotable in the vertical direction, an upper boom 3U that is pivotably coupled to the tip of the lower boom 3L, and an upper boom 3U. An arm connecting portion 3J provided at the tip so as to be swingable in the left-right direction, an arm 3B, and a bucket 3C are configured. In addition, it is assumed that the lower boom 3L, the upper boom 3U, and the arm 3B are provided with angle detectors (not shown) for detecting angles. In such an offset type construction machine, in order to prevent the front work machine 3 from colliding with the cab 4, a maximum value that can be offset is set, and work that exceeds this maximum value is limited. To do. At this time, the restriction of the work is to lock the cylinders of the arm 3B, the upper boom 3U, and the lower boom 3L by cutting the hydraulic pressure.

  Further, depending on the work site, there may be a restriction on the height of the front work machine 3. For example, when working indoors or when there are obstacles such as electric wires, it is necessary to limit the height of the front work machine 3. Further, depending on the work site, there may be a depth limitation of the front work machine 3. For example, when there is an obstacle such as a buried pipe at the work site, it is necessary to provide a depth limit to the front work machine 3.

  At this time, the position of the bucket 3C is the deepest in the depth direction, but in the height direction, depending on the posture of the front work machine 3, the base end of the arm 3B is positioned at the highest position and the bucket 3C. May be located at the highest position. Therefore, it is necessary to perform control so that the position of the bucket 3C does not exceed the depth limit and the position of the bucket 3C or the position of the proximal end of the arm 3B exceeds the height limit. is there. Therefore, when the limit is exceeded, the cylinders of the arm 3B, the upper boom 3U, and the lower boom 3L are locked by cutting the hydraulic pressure.

  Thus, in order to prevent the front work machine 3 from colliding with the cab 4 or coming into contact with an obstacle, it is necessary to set the offset limit, height limit, and depth limit of the front work machine 3. . The interference prevention function device 55 according to the present embodiment enables operations within the limits of the offset limit value, the height limit, and the depth limit, and prohibits operations from being performed outside this range. Therefore, the interference prevention function device 55 always detects the offset value, the base end position of the arm 3B, and the position of the bucket 3C from the above-described angle detectors and the lengths of the arm 3B, the upper boom 3U, and the lower boom 3L. When the set limits of the offset limit, the height limit, and the depth limit are exceeded, the hydraulic pressure is cut to stop the cylinders of the arm 3B, the upper boom 3U, and the lower boom 3L.

  When using the interference prevention function, the operator uses the monitor 13 to set an offset limit, a height limit, and a depth limit. At this time, the setting of the offset restriction, the height restriction, and the depth restriction is performed by setting the posture of the front work machine 3 when setting, that is, the position of the base end of the arm 3B, the position of the bucket 3C, and the offset when setting Done by value.

  Next, a display control method when using the ML function will be described with reference to the flowchart of FIG. First, as shown in FIG. 3, in the first display area FA of the screen portion 13A, machine status screens of a water temperature gauge M1, an oil temperature gauge M2, a fuel remaining amount gauge M3, a clock M4, and an hour meter M5 are displayed. The icon IC6 “ML” is displayed on the partition forming portion D6 of the second display area SA, and the icon IC7 “interference” is displayed on the partition forming portion D7.

  When the screen as shown in FIG. 3 is displayed, the operator presses the button F6 immediately below the icon IC6 “ML” displayed in the section forming unit D6 (step S11). When the button F6 is pressed, a signal to that effect is input to the CPU 22. The CPU 22 refers to the icon display position storage unit 28, and the icon IC6 displayed on the partition formation unit D6 immediately above the button F6 is displayed. Recognize that it is an icon for calling the ML function. The CPU 22 acquires an ML function screen corresponding to the icon IC 6 for calling the ML function from the function screen storage unit 29 (step S12). At this time, since the values of the rated load, the actual load, the working radius, and the height of the suspended load are displayed on the ML function screen, these values are transferred from the ML function device 54 to the display control device 20 via the vehicle body network 60. Input (step S13). The CPU 22 controls the screen unit output control unit 26 so that the ML function screen acquired from the function screen storage unit 29 and each value input from the ML function device 54 are displayed in the first display area FA. Further, in order to give a new role to the second display area SA, the CPU 22 does not display the icon IC6 “ML” and the icon IC7 “interference” which are displayed in the partition forming units D6 and D7, respectively. Then, the screen unit output control unit 26 is controlled so that the icon IC7 “display switching” is newly displayed on the partition forming unit D7. The screen unit output control unit 26 displays the ML function screen as shown in FIG. 7 in the first display area FA and the second display area SA of the screen unit 13A (step S14).

  The operator displays the ML function screen while performing the crane work, and grasps the rated load, the actual load, the work radius, and the height of the suspended load. Then, when it is no longer necessary to display the ML function screen such as when the crane work is finished, the button F7 immediately below the icon IC7 “display switching” displayed in the section forming unit D1 is pressed (step S15). ). When a signal indicating that the button F7 has been pressed is input to the CPU 22, the CPU 22 controls the screen unit output control unit 26 so that a machine status screen as shown in FIG. 3 is displayed. On the other hand, when the button F7 is not pressed (step S15), the ML function screen is continuously displayed. At this time, the values of the rated load, actual load, work radius, and suspended load displayed on the ML function screen are as follows. Since these values are constantly changing, these values are always obtained from the ML function device 54 (step S13), and the ML function screen is displayed (step S14).

  Next, display control of the interference prevention function will be described with reference to the flowcharts of FIGS. First, as in the ML function, as shown in FIG. 3, a machine state screen is displayed on the screen unit 13A, and an icon IC6 “ML” is displayed on the partition forming unit D6. Is displayed with an icon IC7 of “interference”.

  When the screen as shown in FIG. 3 is displayed, the operator presses the button F7 immediately below the icon IC7 “interference” displayed in the section forming unit D7 (step S21). When the button F7 is pressed, a signal to that effect is input to the CPU 22, and the CPU 22 refers to the icon display position storage unit 28, and the icon displayed on the partition forming unit D7 directly above the button F7 interferes. Recognize that the icon is for calling the prevention function. The CPU 22 acquires an interference prevention function screen corresponding to the icon IC 7 for calling the interference prevention function from the function screen storage unit 29 (step S22). At this time, since three types of information of height, depth, and offset are displayed on the interference prevention function screen, these three types of information are acquired from the interference prevention function device 55 (step S23). Here, among these three types of information, the depth is the position of the bucket 3C at that time, and the offset is the offset value of the front work machine 3 at that time. On the other hand, the height is a higher position of the position of the bucket 3C and the position of the base end portion of the arm 3B.

  The CPU 22 controls the screen unit output control unit so that the interference prevention function screen acquired from the function screen storage unit 29 and the height, depth, and offset information acquired from the interference prevention function device 55 are displayed in the first display area FA. 26 is controlled. Further, the CPU 22 gives an icon IC6 “ML” and “interference” respectively displayed on the partition forming portions D6 and D7 in order to give the second display area SA a role for making a new setting. The icon IC7 is set in a non-display state, a new icon IC1 “height restriction” is set in the section forming part D1, an icon IC2 “depth restriction” is set in the section forming part D2, and “offset limit” is set in the section forming part D3. The screen unit output control unit 26 is controlled so that the icon IC3 is displayed on the section forming unit D7 as an icon IC7 “switch display”. The screen unit output control unit 26 displays an interference prevention function screen as shown in FIG. 9 in the first display area FA and the second display area SA of the screen unit 13A (step S24).

  Here, unlike the ML function, the interference prevention function needs to set the height limit, the depth limit, and the offset limit. Therefore, the operator uses the buttons F1 to F3 as shown in FIG. Setting processing is performed (step S25). Here, the setting of the height limit, the depth limit, and the offset limit may be performed by inputting a numerical value that is known in advance or by setting the front work machine 3 to operate. A case in which 3 is set by operating will be described. That is, at the work site, the operator actually moves the front work machine 3 so that the front work machine 3 is in the height restriction, depth restriction, and offset restriction positions, and at that position, the height restriction and depth restriction are performed. And offset restriction. Therefore, when the height is limited by the height displayed on the interference prevention function screen, the button F1 is pressed (step S31), and the value is determined. When a signal indicating that the button F1 has been pressed is input to the CPU 22, the CPU 22 controls the interference prevention function device 55 via the vehicle body network 60 so as to limit the height at the current height (Step S1). S32). When the depth is limited to the depth displayed on the interference prevention function screen, the button F2 is pressed (step S33), and the value is confirmed. When a signal indicating that the button F2 has been pressed is input to the CPU 22, the CPU 22 controls the interference prevention function device 55 via the vehicle body network 60 so as to limit the depth to the depth at that time (step). S34). Further, when the offset is limited with the offset displayed on the interference prevention function screen, the button F3 is pressed (step S35), and the value is determined. When a signal indicating that the button F3 is pressed is input to the CPU 22, the CPU 22 controls the interference prevention function device 55 via the vehicle body network 60 so as to limit the offset according to the posture of the front work machine 3 at that time. (Step S36). The setting process is performed as described above.

  When the setting process is completed, the operator presses the button F7 immediately below the icon IC7 “display switching” displayed in the section forming unit D7 (step S26). When a signal indicating that the button F7 has been pressed is input to the CPU 22, the CPU 22 controls the screen unit output control unit 26 so that a machine status screen as shown in FIG. 3 is displayed.

  As described above, the monitor 13 is configured by the screen portion 13A and the button portion 13B, and the screen portion 13A is formed in a thin strip shape below the first display area FA where the normal machine state screen is displayed. A second display area SA is displayed, and the second display area SA is divided into a plurality of sections. A variable icon is displayed on each section forming unit, and a fixed button corresponding to one-to-one is provided immediately below each icon, so one button can be changed by changing the icon. Can play a plurality of roles, and at the same time, the operator can intuitively and quickly grasp the role of each button.

  The icons are provided for calling up the ML function screen and the interference prevention function screen. However, icons other than those for calling up the function screen may be provided. Also, an icon for calling a function screen of another function or a newly added function is used instead of an icon for calling an ML function screen or an interference prevention function screen, or an ML function screen or an interference prevention function screen is called. By providing further in addition to the icon, the operator can call an appropriate function screen corresponding to the work by one operation without hesitation. For example, when an operation such as attaching a grapper or a breaker is performed, it is necessary to call and set a function screen according to the operation. At this time, the partition forming portions D1 to D7 of the second display area SA are used. If an icon for calling a predetermined function screen is displayed on any one of them, and the icon display position storage unit 28 stores that the icon is displayed, the operator can intuitively and quickly You can call up the function screen. In addition, in the called function screen, in addition to an icon for performing a predetermined operation, an icon for performing another operation can be assigned to easily cope with a newly added operation, for example. it can.

  Further, although the ML function screen and the interference prevention function screen have been described as separate screens, when the ML function and the interference prevention function are used at the same time, the ML function screen and the interference prevention function screen are combined into one. It may be displayed as a function screen.

  For example, when using an offset construction machine as shown in FIG. 5 and using the ML function and the interference prevention function at the same time, as shown in FIG. 11, each of the partition forming portions D5 and D6 has an ML function. The icon IC6 for calling and the icon IC6 for calling the interference prevention function are displayed, but the icon IC7 "ML interference" is displayed in the section forming unit D7. When the button F7 immediately below the icon IC7 is pressed, a function screen in which the first display area FA is divided into an ML function screen and an interference function screen is displayed as shown in FIG. 12, for example. At this time, in each section forming part of the second display area SA, an icon IC1 for switching the display to the machine state screen, an icon IC5 for limiting the height, and an icon IC6 for limiting the depth However, an icon IC7 for limiting the offset is displayed. By pressing a button immediately below each icon, display switching or interference function setting can be performed. Here, in FIG. 12, an icon IC4 “all restricted” is displayed in the partition forming portion D4. The icon IC4 is an icon for performing a newly added operation. By pressing a button F4 immediately below the icon IC4, the currently displayed height, depth, and offset are set once. Can be limited. In this way, if there is a partition forming unit in which no icon is displayed, a new operation can be added by displaying an icon for performing a new operation at that location.

  Moreover, although the setting of the height restriction, the depth restriction, and the offset restriction of the interference prevention function is performed according to the posture of the front work machine 3 at that time, for example, an operator may manually set numerical values. For example, the interference prevention function screen of FIG. 13 differs from the interference prevention function screen of FIG. 9 in that the icon IC4 “up” is formed in the partition forming unit D4 and the icon IC5 “down” is formed in the partition forming unit D5. An icon IC6 “numerical value setting” is provided in the part D6. The background of any one of the height, depth, and offset displayed in the first display area FA is provided with diagonal lines. This diagonal line indicates that an item for which a numerical value is manually set is selected by the operator. When the button F4 immediately below the icon IC4 “up” is pressed, the selected item moves up by one. When the button F5 immediately below the icon IC5 “down” is pressed, the selected item is moved down by one. Then, when the button F6 immediately below the icon IC6 “Numeric value setting” is pressed in the item to be set, the screen changes to a numerical value setting screen as shown in FIG.

  In this numerical value setting screen, information on any one of the current height, depth, or offset is displayed. On the other hand, in order to increase the limit value, a button “+” immediately below the icon IC1 is displayed. When F1 is pressed and the number is reduced, the button F2 immediately below the icon IC2 “−” is pressed. When the set value is confirmed, the set value is confirmed by pressing the button F7 immediately below the icon IC7. In this way, the operator may set the height limit, the depth limit, or the offset limit manually.

  In addition, when using the interference prevention function, it has been described that the bucket 3C is mounted as an attachment of the front work machine 3, but, for example, a breaker or a grapple may be mounted as an attachment instead of the bucket. In such a case, since the shape of the bucket is different from that of the breaker, grapp, etc., the offset restriction is also different. Similarly, the height limit and the depth limit are different. Therefore, a function for calculating the height, depth, and offset according to the attachment is newly added to the interference prevention function, and the icon IC4 “breaker” and “grapp” are displayed on the interference prevention function screen as shown in FIG. An interference prevention function screen as shown in FIG. 15 to which the icon IC5 is added is displayed. When the button F4 immediately below the icon IC4 is pressed, the height, depth, and offset according to the shape of the breaker are recalculated and displayed, and when the button F5 immediately below the icon IC5 is pressed. The height, depth and offset according to the shape of the grapple are recalculated and displayed. Thus, even if a new function is added to the interference prevention function screen, it can be easily handled.

  The button part 13B has been described as being provided immediately below the screen part 13A. However, for example, even if the button part 13B is provided directly above the screen part 13A, it is provided on the left or right side of the closest position of the screen part 13A. It may be provided, or may be provided on both the left and right sides. In other words, the relationship between the button and the icon may be provided at an arbitrary position as long as it is arranged at a close position so that the operator can intuitively and quickly grasp the relationship.

  In addition, although the icon IC6 “ML” for calling the ML function screen and the icon IC7 “interference” for calling the interference prevention function screen are provided in the partition forming units D6 and D7, respectively, the present invention is not limited to this. Instead, it may be provided in an arbitrary partition forming portion. In short, it is only necessary that an icon indicates which function screen is to be displayed by each section forming unit, and a target function screen may be called by pressing a button immediately below the icon. The same applies to icons displayed on the ML function screen and the interference prevention function screen.

  In addition, the ML function screen displays four types of information: rated load, actual load, working radius, and suspended load height. However, when carrying out crane work, two pieces of information on the rated load and actual load are necessary. Although it is displayed, other information is not necessarily displayed. Therefore, two pieces of information such as the working radius and the height of the suspended load may be displayed, or other information may be displayed instead of these pieces of information.

1 is an overall configuration diagram of a construction machine. It is a schematic block diagram inside a driver's cab. It is a block diagram of a monitor. It is a schematic block diagram of a display control apparatus. It is a whole block diagram of an offset type construction machine. It is a flowchart which shows the flow of a process of ML function. It is a screen block diagram of ML function screen. It is a flowchart which shows the flow of a process of an interference prevention function. It is a screen block diagram of an interference prevention function screen. It is a flowchart which shows the flow of the setting process in an interference prevention function. It is a screen block diagram in which an icon for displaying the ML function and the interference prevention function on the same screen is displayed. It is a screen block diagram in which the ML function and the interference prevention function are displayed on the same screen. It is a screen block diagram on which an icon for manually setting the interference prevention function is displayed. It is a screen block diagram which performs the setting of an interference prevention function manually. It is the screen block diagram which added the other icon to the interference prevention function screen.

Explanation of symbols

13 Monitor 13A Screen part 13B Button part FA 1st display area SA 2nd display area D1-D7 Section formation part F1-F9 Button IC1-IC7 Icon

Claims (8)

In a display device for a construction machine having a screen portion on which a plurality of types of information are displayed so as to be switchable, and a button portion including a plurality of buttons provided at positions close to the screen portion.
The screen section has a first display area for displaying the information and a second display area for displaying an icon indicating a role for operating the information displayed in the first display area. And
The display unit for a construction machine, wherein the button part is provided at a position close to the second display area, and at least one button of the button part plays a role of the icon.   The second display area has a band-like area below the first display area and is divided into a plurality of partition forming portions, and the button of the button portion is directly below each of the partition forming portions. The display device for a construction machine according to claim 1, wherein the display device is provided one by one, and the icon displayed on the section forming unit is associated with the button directly below the section forming unit.   The display device for a construction machine according to claim 1, wherein the icon is an icon for calling a function screen for displaying information related to a function provided in the construction machine.   When the function screen is called, information related to the function is displayed after the machine state screen displayed in the first display area is hidden and displayed in the second display area. 4. The display device for a construction machine according to claim 3, wherein the icon for operating the function screen is newly displayed after the icon is hidden.   In addition to displaying information output from the function, the function screen further operates the button associated with the icon displayed in the second display area, thereby operating the function. 4. The display device for a construction machine according to claim 3, wherein:   The display device for a construction machine according to claim 3, wherein a plurality of the function screens are displayed in parallel on the screen unit.   The function is an ML function for displaying, in the first display area, information on a rated load that is a limit load at which the construction machine can suspend a suspended load and an actual load that is a load of an actual suspended load. The display device for a construction machine according to claim 3. The function displays information necessary for setting the operating range of the front work machine of the construction machine, and the button associated with the icon displayed in the second display area is pressed. 4. The display device for a construction machine according to claim 3, wherein the setting is performed by the operation.

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