Construction machine

Abstract

To provide a construction machine which enables a worker to easily grasp details of the circumstances under which the start of a power source is not permitted and to quickly lift the prohibition as necessary.SOLUTION: A hydraulic excavator 1 includes an engine 16 (power source), a key switch 52 (power source start switch) through which an operation input is made to instruct the start of the engine 16, a plurality of on-vehicle devices 60 which switch between permission and disallowance of starting the engine 16 depending on an operating state, a monitor 40 (display device) which displays various information, and a monitor controller 55 (control device) which controls the monitor 40. The monitor controller 55 acquires position information and operating state information of the plurality of on-vehicle devices 60, and causes the position information and operating state information of the plurality of on-vehicle devices 60 to be displayed on the monitor 40, superimposed on an external view 70A of the vehicle itself.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a construction machine equipped with a power source and a plurality of on-board devices that switch between permission and disallowance for starting the power source depending on the operating state. [Background technology]

[0002] Conventionally, there is known a technique for disallowing the start of a power source in a construction machine depending on the operating state of a specific on-board device. For example, Patent Document 1 describes a vehicle state notification device for a construction machine that includes a key switch connected to a battery and an engine stop switch connected downstream of the key switch between the battery and an engine controller. When the engine stop switch is in the OFF state, this notification device determines that the start of the power source is not permitted, and outputs a display indicating that the engine stop switch is in the OFF state on the display screen of a monitor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5053467 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a construction machine, engine stop switches may be located in multiple locations, and simply displaying on the monitor that a single engine stop switch is in the off state makes it unclear which engine stop switch is being represented, and where on the construction machine the engine stop switch causing the disallowance is located. In addition, a construction machine may be equipped with multiple on-board devices that disallow the start of the power source depending on their operating state, in addition to the engine stop switch. As a result, the worker cannot recognize which on-board device has disallowed the start of the power source, and it is time-consuming to search for all the on-board devices in the disallowed state and then switch them to the allowed state, which may prevent the power source from being started quickly.

[0005] The present invention has been made in consideration of such problems, and its object is to provide a construction machine that enables an operator to easily grasp the details of the circumstances under which starting of the power source is not permitted, and to quickly lift the prohibition if necessary. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the construction machine of the present invention is a construction machine equipped with a power source, a power source start switch through which an operational input is made to command the start of the power source, a plurality of on-board devices which switch between allowing and disallowing the start of the power source depending on their operating state, and a display device which displays various information, and is characterized in that when an operational input to start the power source is made via the power source start switch, the construction machine is equipped with a control device which acquires position information and operating state information of the plurality of on-board devices, and displays the position information and operating state information of the plurality of on-board devices on the display device, superimposed on an external view of the machine itself. Effect of the Invention

[0007] According to the construction machine of the present invention, the worker can easily grasp the details of the circumstances under which starting of the power source is not permitted, and can quickly lift the prohibition as necessary. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram showing a hydraulic excavator as a construction machine according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing the inside of a cab of a hydraulic excavator. [Diagram 3] FIG. 1 is an explanatory diagram showing an outline of a system configuration of a hydraulic excavator. [Figure 4] FIG. 2 is an explanatory diagram showing an example of an external view including information on a plurality of in-vehicle devices; [Diagram 5] FIG. 13 is an explanatory diagram showing another example of an external view including information related to a plurality of in-vehicle devices; [Figure 6] 11 is an explanatory diagram showing an example of a display when a person is detected in a machine room by a human detection device. FIG. [Figure 7] FIG. 1 is an explanatory diagram showing a display example of a three-dimensional model of a hydraulic excavator. [Figure 8] FIG. 11 is an explanatory diagram showing an example of a display of a three-dimensional model in which an engine stop switch is exposed; [Figure 9] FIG. 11 is an explanatory diagram showing an example of a display of a three-dimensional model in the vicinity of a stop valve. [Figure 10] FIG. 13 is an explanatory diagram showing an example of a display of a three-dimensional model in the vicinity of a shutoff lever. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is an explanatory diagram showing a hydraulic excavator as a construction machine of the embodiment. The hydraulic excavator 1 shown in Fig. 1 is a construction machine used for, for example, excavating earth and sand at a construction site. The hydraulic excavator 1 includes a vehicle body 10 and a working device 20. In the following description, the vehicle front-rear direction, left-right direction (vehicle width direction), and up-down direction are defined with reference to a driver who is on board the hydraulic excavator 1.

[0010] The vehicle body 10 includes a lower traveling body 11 and an upper rotating body 12. The lower traveling body 11 includes a crawler 11a driven by a hydraulic motor for traveling (not shown) as a drive device for traveling the hydraulic excavator 1. The upper rotating body 12 is driven by a hydraulic motor for turning (not shown) and is provided on the lower traveling body 11 so as to be able to turn. A cab 13 for an operator to ride in is provided at the front of the upper rotating body 12. A building, a fuel tank, a counterweight, and the like constituting a machine room 14 are provided behind the cab 13 of the upper rotating body 12. The machine room 14 is equipped with an engine 16 ( FIG. 3 ) as a power source, a hydraulic pump (not shown) that is driven by the engine 16 and pumps hydraulic oil to be supplied to the hydraulic motor for traveling, the hydraulic motor for turning, and each component of the working device 20.

[0011] The working device 20 is an articulated working device, and includes a boom 21, an arm 22, a bucket 23, and a plurality of hydraulic cylinders 24, 25, and 26. The boom 21 is connected to the upper rotating body 12 so as to be movable up and down. The arm 22 is connected to the boom 21 so as to be movable up and down. The bucket 23 is a hydraulic working tool for performing excavation work and the like, and is connected to the arm 22 so as to be movable up and down. When the bucket 23 is replaced with a hydraulic breaker or hydraulic crusher, the replaced equipment functions as the hydraulic working tool. The hydraulic cylinder 24 is connected between the upper rotating body 12 and the boom 21, and adjusts the angle of the boom 21 by extending and retracting hydraulically. The hydraulic cylinder 25 is connected between the boom 21 and the arm 22, and adjusts the angle of the arm 22 by extending and retracting hydraulically. The hydraulic cylinder 26 is connected between the arm 22 and the bucket 23, and adjusts the angle of the bucket 23 by extending and retracting hydraulically.

[0012] FIG. 2 is a perspective view showing the inside of the cab 13 of the hydraulic excavator 1. Inside the cab 13, a cab 30 is arranged where the operator sits. Various operating devices are mounted near the cab 30, such as a travel lever (not shown) as an operating end for traveling the lower traveling body 11, a travel pedal, an operating device for performing various operations of the hydraulic excavator 1, and a shutoff lever 65. In addition, a monitor 40 (display device) is provided at a position visible from the operator on the left side in front of the cab 30. The monitor 40 displays various information such as the operating state and control contents of the hydraulic excavator 1. In this embodiment, the monitor 40 is a display device equipped with a touch panel type input function, and various operations are performed by a monitor controller 55 (described later) by detecting that the operator has touched the screen. The monitor 40 is not limited to a touch panel type, and may be any type having an input function that allows the operator to input various information and operate the display on the screen.

[0013] 3 is an explanatory diagram showing an outline of the system configuration of the hydraulic excavator 1. The hydraulic excavator 1 is equipped with a battery 50, a key switch (engine start switch or power source start switch) 52, an engine controller 53, a main controller 54, and a monitor controller 55 (control device). The battery 50 is a rechargeable storage battery mounted on the vehicle body 10. The key switch 52 is a switch into which an unillustrated key is inserted and turned to input an operation command to start or stop the engine 16 or to switch the operating state, and is connected to the battery 50 and the engine controller 53.

[0014] The engine controller 53, the main controller 54, and the monitor controller 55 are configured to include input / output devices, storage devices (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), etc. The engine controller 53 is electrically connected to the battery 50 via a key switch 52, and operates on power from the battery 50 to control the drive of the engine 16. The main controller 54 is a control device that controls the entire hydraulic excavator 1, and outputs instruction signals and various information according to the above-mentioned operating devices operated by the operator to the engine controller 53 and the monitor controller 55. The monitor controller 55 is a control device that controls the monitor 40, and causes information acquired from the main controller 54 to be displayed on the monitor 40.

[0015] Here, the hydraulic excavator 1 is equipped with a plurality of on-vehicle devices 60 that are operated by an operator during maintenance or an emergency, for example, and switch between permission and disallowance to start the engine 16 depending on the operating state of the devices. The plurality of on-vehicle devices 60 include a plurality of (three in this embodiment) engine stop switches 61, 62, 63 (power source stop switches), a stop valve 64 (on-off valve), a shutoff lever 65, and a human detection device 66.

[0016] The engine stop switches 61, 62, and 63 are switches that switch between permission and prohibition of starting the engine 16 by the operation of an operator. The engine stop switches 61, 62, and 63 are connected downstream of the key switch 52 between the battery 50 and the engine controller 53 and the main controller 54. When any one of the engine stop switches 61, 62, and 63 is turned on, the start signal of the engine 16 output from the key switch 52 to the engine controller 53 is cut off. This prohibits starting the engine 16. On the other hand, when all of the engine stop switches 61, 62, and 63 are turned off, the start signal of the engine 16 output from the key switch 52 is transmitted to the engine controller 53. This permits starting the engine 16. The engine stop switches 61, 62, and 63 are also connected to the main controller 54, and output a signal indicating the current operating state, that is, whether the switch is on or off, to the main controller 54.

[0017] In this embodiment, the engine stop switches 61, 62, 63 are, for example, parallel two-contact toggle switches, and are provided in the machinery room 14. The engine stop switches 61, 62, 63 are preferably provided near an entrance to the machinery room 14 or near a location that requires inspection. Note that the engine stop switches 61, 62, 63 may be provided in a location other than the machinery room 14, such as the driver's cab 13. Also, the engine stop switches 61, 62, 63 may be any switch that can be switched between an on state and an off state, such as a selector switch.

[0018] The stop valve 64 is an on-off valve capable of cutting off the flow of hydraulic oil supplied to hydraulic actuators (predetermined hydraulic equipment) such as the traveling hydraulic motor, the swing hydraulic motor, and the multiple hydraulic cylinders 24, 25, 26. For example, a butterfly valve is used as the stop valve 64, which is switched between an on state (closed state) in which the flow of hydraulic oil in the piping is cut off and an off state (open state) in which the flow of hydraulic oil is not cut off by an operator manually turning a handle. Such a stop valve 64 is provided, for example, at a joint portion of the hydraulic oil piping at a disassembly position of the frame in order to deal with a case where an inconvenience occurs if the flow of hydraulic oil is not cut off, such as when the left and right frames and the center frame constituting the vehicle body 10 are disassembled for maintenance or transportation in a large hydraulic excavator 1. The stop valve 64 also outputs a signal indicating the current operating state, that is, whether the state is on or off, to the main controller 54.

[0019] The shut-off lever 65 is also called a gate lock lever, and is a lever that can be switched between an ON position (locked position) that does not allow the operation of hydraulic actuators including the traveling hydraulic motor, the swing hydraulic motor, and the multiple hydraulic cylinders 24, 25, 26, and an OFF position (unlocked position) that allows the operation of the hydraulic actuators. The shut-off lever 65 is manually operated by an operator. The shut-off lever 65 outputs a signal indicating the current operating state, that is, whether it is in the ON state or the OFF state, to the main controller 54.

[0020] The human detection device 66 is provided in the machine room 14, and detects that a person, such as a worker, has entered the machine room 14. The human detection device 66 detects a person in the machine room 14, for example, by using LiDAR (Laser Imaging Detection And Ranging), and outputs the detection result and position information of the detected person to the main controller 54. Note that the human detection device 66 may detect a person by analyzing an image of the inside of the machine room 14 captured by an imaging device, for example, by using a known image processing method, or may detect a person by using a distance measuring sensor such as a millimeter wave radar.

[0021] The main controller 54 outputs a signal to the engine controller 53 not permitting the start of the engine 16 when the stop valve 64 is in the ON state, the shutoff lever 65 is in the ON state, or a person is detected in the machine room 14 by the human detection device 66. As a result, even if a start signal for the engine 16 is being output from the key switch 52 to the engine controller 53, the start of the engine 16 is not permitted.

[0022] Furthermore, the main controller 54 outputs position information and operation state information of the multiple on-board devices 60 to the monitor controller 55. The position information includes position information of the engine stop switches 61, 62, 63, the stop valve 64, and the shutoff lever 65 within the hydraulic excavator 1, and is stored in advance in the main controller 54. The operation state information includes information on the operation states of the engine stop switches 61, 62, 63, the stop valve 64, and the shutoff lever 65. The operation state information also includes the detection result by the human detection device 66, i.e., information on whether or not a human has been detected in the machine room 14, and information on the detected position of the human.

[0023] The monitor controller 55 acquires the above-mentioned position information and information on the operating state input from the main controller 54, and displays the acquired information on the monitor 40 by superimposing it on an external view of the hydraulic excavator 1 itself (own machine). Hereinafter, examples of displaying various information on the monitor 40 will be described with reference to Figs. 4 to 10. Fig. 4 is an explanatory diagram showing an example of an external view including information on a plurality of on-vehicle devices 60, and Fig. 5 is an explanatory diagram showing another example of an external view including information on a plurality of on-vehicle devices 60. The external view 70A is a plan view of the hydraulic excavator 1, and is stored in advance in the main controller 54 or the monitor controller 55. Note that the external view 70A may be a side view of the hydraulic excavator 1 as viewed from the left and right direction, a front view as viewed from the front side in the vehicle longitudinal direction, a rear view as viewed from the rear side in the vehicle longitudinal direction, a perspective view, or the like.

[0024] The monitor controller 55 displays, on the external view 70A, an icon IC61 indicating the position of the engine stop switch 61, an icon IC62 indicating the position of the engine stop switch 62, an icon IC63 indicating the position of the engine stop switch 63, an icon IC64 indicating the position of the stop valve 64, and an icon IC65 indicating the position of the shut-off lever 65. The monitor controller 55 also changes the display manner of the icons IC61, IC62, IC63, IC64, and IC65 according to the operating state of each of the in-vehicle devices 60. For example, FIG. 4 shows an example in which the engine stop switch 61 is in an off state, the engine stop switches 62 and 63 are in an on state, and the stop valve 64 and the shut-off lever 65 are in an off state. In this case, the monitor controller 55 displays the icons IC62 and IC63 indicating the on state as, for example, red circles (circles with diagonal lines in the figure), and displays the icons IC61, IC64, and IC65 indicating the off state as blue circles (circles with white lines in the figure). 5 shows an example in which the engine stop switches 61, 62, and 63 are in the OFF state, and the stop valve 64 and the shutoff lever 65 are in the ON state. In this case, the monitor controller 55 displays the icons IC64 and IC65 indicating the ON state as, for example, red circles, and displays the icons IC61, IC62, and IC63 indicating the OFF state as blue. Here, the icons IC61 to IC65 are represented as circles with diagonal lines or white for the sake of explanation, but the display mode of the icons IC61 to IC65 may be any mode that allows the distinction between the ON state and the OFF state, and may be, for example, a circle without a fill (transparent) or a semi-transparent circle.

[0025] The monitor controller 55 also displays a first auxiliary information display section 71 which indicates the operating state of each in-vehicle device 60 in words. Here, the fact that the engine stop switch 61 is in the off state is displayed in words, such as "Engine Stop Switch1: OFF". The monitor controller 55 also displays a second auxiliary information display section 72 which indicates the display mode of the icons IC61 to IC65 in words. Here, the fact that the icons IC61 to IC65 are in the off state are displayed in words, such as "BLUE: OFF" and "RED: ON", is displayed in words, such as "BLUE: OFF" and "RED: ON".

[0026] FIG. 6 is an explanatory diagram showing a display example when a person is detected in the machine room 14 by the human detection device 66. As shown in the figure, the monitor controller 55 displays the icon IC66 at the position where the person is detected in the machine room 14 on the external view 70A. For the sake of explanation, the icon IC66 is represented by a circle with diagonal lines, but the display form of the icon IC66 may be any one that allows the detection position of the person to be identified, and may be, for example, a circle without a fill (transparent) or a semi-transparent circle. The monitor controller 55 also displays the third auxiliary information display unit 73, for example, on the side of the external view 70A. The third auxiliary information display unit 73 includes a simplified diagram 731 that typically indicates that a person has been detected by the human detection device 66. The simplified diagram 731 typically indicates a person, and is stored in advance in the monitor controller 55 or the main controller 54. The third auxiliary information display unit 73 also includes a statement indicating that a person has been detected, such as, for example, "Human Detected." The above simplified diagram 731 is not limited to the detection result of the human detection device 66, and may be a simplified diagram corresponding to each of the engine stop switches 61, 62, 63, the stop valve 64, and the shutoff lever 65, so as to diagrammatically show the reasons why starting of the engine 16 is not permitted.

[0027] Furthermore, the monitor controller 55 uses the three-dimensional model of the hydraulic excavator 1 to display detailed positions of the multiple on-board devices 60 on the monitor 40. FIG. 7 is an explanatory diagram showing a display example of a three-dimensional model 70B of the hydraulic excavator 1. Now, in the example shown in FIG. 4, it is assumed that the worker selects the icon IC63 on the screen of the monitor 40 by an operation such as touching. At this time, as shown in FIG. 7, the monitor controller 55 displays a three-dimensional model 70B showing the vicinity of the engine stop switch 63 (FIG. 8) corresponding to the icon IC63. The three-dimensional model 70B may be stored in advance in the main controller 54 or the monitor controller 55. Furthermore, the monitor controller 55 displays a fourth auxiliary information display section 74 on the three-dimensional model 70B. The fourth auxiliary information display section 74 is stored in association with each of the icons IC61 to IC65, and information corresponding to the icon IC61 to IC65 touched by the worker is displayed. In Figure 7, the engine stop switch 63 is located inside the door 80 of the machine room 14, and an icon 741 containing the words "Open the door" and an arrow-shaped icon 742 are displayed, indicating that the engine stop switch 63 can be made visible by touching the door 80 in the three-dimensional model 70B.

[0028] FIG. 8 is an explanatory diagram showing a display example of the three-dimensional model 70B in which the engine stop switch 63 is exposed. When the worker selects the door 80 in FIG. 7 by an operation such as touching, the monitor controller 55 removes the door 80 from the three-dimensional model 70B and displays the three-dimensional model 70B in a state in which the engine stop switch 63 is exposed. The monitor controller 55 also enlarges and displays the vicinity of the engine stop switch 63 in the three-dimensional model 70B. The enlarged display of the three-dimensional model 70B may be performed in response to the worker selecting the vicinity of the engine stop switch 63 by an operation such as touching. The monitor controller 55 also displays, as the fourth auxiliary information display unit 74, an icon 743 including a wording indicating that it is the engine stop switch 63, an arrow-shaped icon 744 indicating the position of the engine stop switch 63, and a circular icon 745 surrounding the engine stop switch 63.

[0029] FIG. 9 is an explanatory diagram showing a display example of a three-dimensional model 70B in the vicinity of the stop valve 64. Here, in the example shown in FIG. 5, it is assumed that the worker touches the icon IC64 on the screen of the monitor 40. At this time, the monitor controller 55 displays a three-dimensional model 70B showing the vicinity of the stop valve 64 in order to show the detailed position of the stop valve 64 corresponding to the icon IC64. In addition, the monitor controller 55 displays, as the fourth auxiliary information display unit 74, an icon 746 including a wording indicating that it is the stop valve 64 and an arrow-shaped icon 747 indicating the position of the stop valve 64. Note that, as in FIG. 8, a circular icon surrounding the stop valve 64 may be displayed.

[0030] FIG. 10 is an explanatory diagram showing a display example of a three-dimensional model 70B in the vicinity of the shutoff lever 65. Here, in the example shown in FIG. 5, it is assumed that the worker touches the icon IC65 on the screen of the monitor 40. At this time, the monitor controller 55 displays a three-dimensional model 70B showing the vicinity of the shutoff lever 65 in order to show the detailed position of the shutoff lever 65 corresponding to the icon IC65. In addition, the monitor controller 55 displays, as the fourth auxiliary information display unit 74, an icon 748 including a message indicating that it is the shutoff lever 65 and an arrow-shaped icon 749 indicating the position of the shutoff lever 65. Note that, as in FIG. 8, a circular icon surrounding the shutoff lever 65 may be displayed.

[0031] As described above, the hydraulic excavator 1 (construction machine) of the embodiment includes the engine 16 (power source), the key switch 52 (power source start switch) through which an operational input is made to instruct the start of the engine 16, a plurality of on-vehicle devices 60 that switch between permission and disallowance of starting the engine 16 depending on the operating state, the monitor 40 (display device) that displays various information, and a monitor controller 55 (control device) that controls the monitor 40. When an operational input is made through the key switch 52 to start the engine 16, the monitor controller 55 acquires position information and operating state information of the plurality of on-vehicle devices 60, and displays the position information and operating state information of the plurality of on-vehicle devices 60 on the monitor 40, superimposed on an external view 70A of the machine itself.

[0032] With this configuration, the position information and operation information of the multiple on-vehicle devices 60 are displayed on the monitor 40 superimposed on the external view 70A of the vehicle itself, so that the worker can easily know which on-vehicle device 60 has prohibited the start of the engine 16 and where the on-vehicle device 60 is located in the hydraulic excavator 1. As a result, the worker does not need to search for all the on-vehicle devices 60 in the prohibited state and repeat the operation of switching them to the permitted state. Even if the worker does not know the positions of the multiple on-vehicle devices 60, the worker can recognize the positions and does not need to check the instruction manual or the like. Therefore, according to the hydraulic excavator 1 of the embodiment, the worker can easily understand the details of the circumstances under which the start of the engine 16 is prohibited and can quickly cancel the prohibition as necessary. Furthermore, the time required for maintenance of the hydraulic excavator 1 and for responding to an emergency can be reduced.

[0033] The multiple on-board devices 60 also include multiple engine stop switches 61, 62, 63 that switch between permission and disallowance of starting the engine 16, a stop valve 64 (on-off valve) that can cut off the flow of hydraulic oil supplied to a predetermined hydraulic device, a shutoff lever 65 that switches between permission and disallowance of operation of the predetermined hydraulic device, and a human detection device 66 that detects that a human has entered the machine room 14 in which the engine 16 is located. This configuration allows the worker to more comprehensively grasp the details of the circumstances under which starting the engine 16 is not permitted.

[0034] Furthermore, the monitor controller 55 causes the monitor 40 to display, together with the external view 70A, a simplified diagram 731 indicating the reason why starting of the engine 16 is not permitted, for each of the multiple in-vehicle devices 60. With this configuration, the reason why starting of the engine 16 is not permitted can be displayed in an easily understandable manner for the operator.

[0035] Furthermore, the monitor controller 55 uses the three-dimensional model 70B of the vehicle itself to display the vicinity of the multiple on-vehicle devices 60 on the monitor 40. With this configuration, the three-dimensional model 70B can be used to display the detailed position of the on-vehicle device 60 for which starting of the engine 16 is not permitted in an easy-to-understand manner for the worker. Furthermore, by using the three-dimensional model 70B, the worker can grasp the elevation difference around the on-vehicle device 60.

[0036] Although the description of the embodiment is finished above, the aspect of the present invention is not limited to this embodiment. For example, the present invention may be applied to a construction machine other than the hydraulic excavator 1, so long as the construction machine is equipped with a power source and a plurality of on-board devices in which the permission and prohibition of starting the power source are switched depending on the operating state. In addition, the power source is not limited to the engine 16, and may be, for example, an electric motor. In addition, the plurality of on-board devices 60 may include any one of a plurality of engine stop switches 61, 62, 63, a stop valve 64, a shutoff lever 65, and a human detection device 66. In addition, the plurality of on-board devices 60 may be other devices other than those described above, so long as the permission and prohibition of starting the power source are switched depending on the operating state. [Explanation of symbols]

[0037] 1. Hydraulic excavator (construction machinery) 10 Body 14 Machine room 16 Engine (power source) 20 Working Equipment 30 Driver's seat 40 Monitor (display device) 55 Monitor controller (control device) 60 Multiple in-vehicle devices 61, 62, 63 Engine stop switch (power source stop switch) 64 Stop valve (on-off valve) 65 Shut-off lever 66 Human Detection Device 70A External view 70B 3D model 731 Simplified diagram

Claims

1. A power source; a power source start switch through which an operation input for instructing the start of the power source is performed; a plurality of in-vehicle devices that switch between permission and non-permission to start the power source according to an operating state; A display device that displays various information; A construction machine equipped with A construction machine characterized in that it is equipped with a control device that, when an operational input to start the power source is performed by the power source start switch, acquires position information and operating status information of the multiple on-board devices, and displays the position information and operating status information of the multiple on-board devices on the display device, superimposed on an external view of the machine itself.

2. The plurality of in-vehicle devices include a plurality of power source stop switches for switching between permission and prohibition of starting the power source; an on-off valve capable of cutting off the flow of hydraulic oil supplied to a predetermined hydraulic device; a shutoff lever for switching between permission and prohibition of operation of the predetermined hydraulic device; A human detection device that detects whether a person has entered a machine room in which the power source is located; 2. The construction machine according to claim 1, further comprising:

3. The construction machine according to claim 1, characterized in that the control device causes the display device to display, together with the external view, a simplified diagram that diagrammatically indicates the reason why starting of the power source is not permitted, for each of the plurality of on-board devices.

4. 4. The construction machine according to claim 1, wherein the control device uses a three-dimensional model of the machine itself to cause the display device to display the vicinity of the plurality of on-board devices.

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