JP7438061B2 - Display method on terminal device - Google Patents

Description

The present invention relates to safety management of excavators with crane function.

Hydraulic excavators equipped with a crane function are generally known. In this type of hydraulic excavator, a hook for lifting a load is rotatably attached in the storage part of the bucket link, and when lifting a load, the hook is pulled out from the storage part and the crane mode switch is turned on. , it is described that by shifting from excavation mode to crane mode, the rotational speed of the engine is lowered and lifting work is stably executed (see Patent Document 1).

Japanese Patent Application Publication No. 2003-118975

However, when shifting to crane mode, the engine speed decreases, which slows down the work speed, so some workers may perform lifting work without shifting to crane mode, and this may result in a reduction in the number of engine revolutions, which slows down the work. There has been a problem in that it is difficult for administrators to fully understand these dangerous acts.

The present invention has been made in view of the above-mentioned problems of the prior art, and allows managers to easily manage whether a shovel with a crane function used at a construction site is properly using the crane mode during lifting work. The purpose is to provide a method.

In order to solve the above-mentioned problems, the present invention provides a display method for a terminal device including an operation reception section and a control section that causes an image to be displayed on a display section based on the reception operation of the operation reception section, and wherein the image is A determination result by a lifting work determining means that determines whether or not a lifting work is being performed on an excavator, and a determination by a crane mode determining means that determines whether or not a transition is made to a crane mode that restricts the movement of the shovel during the lifting work of the shovel. It consists of the result and the date and time information when the above-mentioned hanging work was performed.

According to the present invention, a manager can easily manage whether a shovel with a crane function used at a construction site is properly using the crane mode during load lifting work.

Side view of a hydraulic excavator with a crane function to which the present invention is applied A front view showing the retracted state of the hook in the hydraulic excavator with crane function shown in Figure 1. A front view showing the unfolded state of the hook in the hydraulic excavator with crane function shown in Figure 1. A perspective view of the driver's seat in the hydraulic excavator with crane function shown in Figure 1. Front view of the monitor device in the driver's seat in Figure 4 A block diagram showing the configuration of the control system in the hydraulic excavator with crane function shown in Figure 1. Diagram showing the liquid crystal display of the monitor device in Figure 5 when transitioning to crane mode Block diagram of the lifting work management system for a hydraulic excavator with crane function shown in Figure 1 A flow diagram showing a control method of a display operation method of a terminal device according to an embodiment of the present invention. Login screen when the terminal device in Figure 9 logs into the web server The initial screen displayed after logging in on the login screen in Figure 10 Calendar display screen that changes after selecting the year and month from the initial screen in Figure 11 After selecting the highlighted date and time from the display screen in Figure 12, a list display of the results of determining whether the hydraulic excavator with crane function is properly using the crane mode during lifting work is displayed. A block diagram showing a modification of the configuration of the control system in the hydraulic excavator with crane function shown in Figure 1. A flow diagram showing a control method of a display operation method of a terminal device according to a modified example of the present invention. Front view of the monitor device in Figure 5 during menu transition Front view of the monitor device displaying the initial screen of the crane mode management screen Front view of the monitor device displaying the calendar display screen that changes after selecting the year and month from the initial screen in Figure 17 After selecting the highlighted date and time from the display screen in Figure 18, the monitor device displays a list display screen of the determination results as to whether the hydraulic excavator with crane function is properly using the crane mode during lifting work. Front view

Hereinafter, an embodiment of the display method of a terminal device according to the present invention will be described in detail with reference to FIG. 1, taking as an example a hydraulic excavator 100 with a crane function to which the present invention is applied.

The hydraulic excavator 100 with a crane function includes a self-propelled lower traveling body 200, an upper rotating body 300 rotatably supported on the lower traveling body 200, and a rotatably supported upper rotating body 300 in front of the upper rotating body 300. It is configured to include a working device 400.

The lower traveling body 200 includes a center frame (not shown) and a side frame 210 (only the left side shown) that is symmetrically paired with the center frame and extends in the front and back direction. A drive wheel 211 (only the left side shown) driven by a travel motor (not shown) is installed, and a plurality of idle wheels 212 (only the left side shown) are installed toward one front end. A crawler belt 213 (only the left side is shown) is wrapped around the drive wheel 211 and the idler wheel 212, and an earth removal device 500, which will be described later, is attached to the front of the center frame.

The revolving upper structure 300 is rotated by a revolving motor (not shown) via a revolving bearing (not shown), and a driver's seat 600 is disposed above the revolving upper structure; An engine room 321 configured by a seat mount 310 and a bonnet 320 is arranged at the rear of the upper rotating body. In the engine room 321, in addition to a communication device 820 for transmitting status information of the hydraulic excavator with crane function 100 to an external server, which will be described later, an engine (not shown) is disposed, and the engine is mounted on the output shaft of the engine. The working device 400, the lower traveling body 200, and the swing motor are driven by a hydraulic pump (not shown).

The working device 400 includes a swing bracket 410 supported by a swing post 330 provided at the tip of the upper revolving structure 300, a boom 420 supported by the swing bracket 410 so as to be rotatable up and down, and a swing post 330 provided at the tip of the upper revolving structure 300. The working device 400 is composed of an arm 430 that is rotatably mounted up and down, and a bucket 440 that is rotatably mounted on the tip of the arm 430. ), a boom cylinder 421 is installed below the boom 420 and moves the boom 420, an arm cylinder 431 is installed above the boom 420 and moves the arm 430, and an arm cylinder 431 is installed above the arm 430. and a bucket cylinder 443 that moves the bucket 440 via bucket links 441 and 442 (only the left side is shown).

Next, a method for storing the hook 445 in the bucket link will be described using FIG. 2. The hook 445 is a hanging device for hanging cargo when carrying out a hanging work, and is pivotally connected to a bucket pin 447 that pivotally supports the bucket links 441 and 444 and the bucket 440, and is connected between the bucket link 441 and the bucket link 444. Stored. When the hook 445 is stored between the bucket links 441 and 444, the hook 445 is fixed by locking the hook pin 446, so that the hydraulic excavator 100 with a crane function can perform excavation work. . Here, the end of the hook pin 446 on the bucket link 441 side has a structure that prevents it from coming off, and the end of the hook pin 446 on the bucket link 444 side has a structure that prevents the hook pin 446 from coming off by passing through a ball socket pin (not shown). It has become.

Next, a method of deploying the hook 445 from within the bucket links 441 and 444 will be described using FIG. 3. The ball socket pin is removed from the hook pin 446, and then the hook pin 446 is removed from the bucket links 441, 444 to free the hook 445, and the hook 445 is expanded by rotating the hook 445 about the bucket pin 447. After attaching the load to the hook 445, the operator starts the lifting work by turning on a crane mode switch 720E, which will be described later. Also, a non-contact sensor 801 is installed inside the bucket links 441, 444 to detect the presence or absence of the hook 445, and sends a detection signal to the integrated controller 800. 445 is present, it is determined whether or not the lifting operation is in progress. If the lifting operation is in progress, a lifting operation signal is transmitted to the communication device 820.

Next, with reference to FIG. 4, the configuration of the driver's seat 600 will be further described. Operation levers 620 and 621 for operating the left and right travel motors are erected on the floor 610 in front of the driver's seat, and a seat 630 is installed on the seat mount 310. A pair of left and right side levers 622 and 623 are attached to both sides of the seat 630 to operate the boom 420, arm 430, bucket 440, and swing motor (not shown). Further, a boarding gate 640 is installed between the seat 630 and the operating lever 620, and a console 650 is installed next to the side lever 623 on the opposite side of the boarding gate 640. In front of the console 650, a monitor device 700 for displaying status information of the hydraulic excavator 100 with a crane function and operating function settings of the hydraulic excavator 100 with a crane function is arranged. An operating lever 624 for operating the device 500 is provided upright.

Next, the operating method of the monitor device 700 and the transition to the crane mode will be described with reference to FIGS. 5, 6, and 7. The monitor device 700 includes a liquid crystal display 710 that displays an image, an operation button 720 that receives an operation on the monitor device 700, and displays information on the liquid crystal display 710 based on the operation received by the operation button 720, and communicates information with the integrated ECU 800 and the engine ECU 810. It consists of a monitor ECU 730 that exchanges information.

The integrated ECU 800, engine ECU 810, and monitor ECU 730 are connected to the 12-volt battery installed in this machine, which provides a power supply that supplies stable voltage to each block within the ECU 800, and converts digital input signals to a signal level that can be input to the microcontroller. an AD converter that converts analog signals into digital values that can be input to the microcontroller, a microcontroller that calculates and outputs control amounts from various input signals, and memory that stores data even if power is no longer supplied from the power supply. EEPROM (Electronically Erasable and Programmable Read Only Memory), an output driver that converts the output signal of the microcontroller into a signal format that can be driven by the actuator and amplifies the voltage, and a It consists of a communication driver that converts signals sent by other ECUs to a level that can be input to the microcontroller.

The liquid crystal display 710 is composed of a basic display 711 that displays state quantities of the hydraulic excavator 100 with a crane function, and a function display 712 that displays the operation content assigned to the operation button 720. A fuel remaining amount display 711A that displays the amount in a bar graph, a cooling water temperature display 711B that displays the cooling water temperature with a meter, a hydraulic oil temperature display 711C that displays the hydraulic oil temperature with a meter, and 711D that displays the engine rotation speed. It consists of

Below the function display 712, operation buttons 720 are arranged to correspond to the operation contents displayed on the function display 712. When the operation button 720A located below the "menu" 712A displayed on the function display 712 is pressed, the basic display 711 changes to a menu display 713 that displays detailed information on the functions of the hydraulic excavator 100 with a crane function. do. The function display 712 transitions to a selection display 714 that is a display of operation details assigned to the operation buttons 720 for selecting and operating these functions. When the operation button 720B located below the "mode" 712B displayed on the function display 712 is pressed, the setting screen for restricting the height of the working device 400 replaces the basic display 711, and the function display 712 The screen transitions to a selection display 714 that is a display of the operation contents assigned to the operation button 720 for making settings for restricting the height. Furthermore, when the operation button 720C located below the "camera" 712C displayed on the function display 712 is pressed, the basic display 711 changes to the display of the monitoring image of the camera arranged on the upper revolving body 300, and the function display 712 transitions to a selection display 714 that is a display of operation details assigned to the operation button 720 for changing the display of the monitoring image. When the operation button 720D located below "PTO" 712D displayed on the function display 712 is pressed, the basic display 711 displays a screen for setting the maximum flow rate of oil flowing to the attachment attached to the work device 400. The function display 712 transitions to a selection display 714 that displays the operation content assigned to the operation button 720 for setting the maximum flow rate. Then, when the operation button 720E located below the "crane" 712E displayed in the function display 712 is pressed, the hydraulic excavator 100 with a crane function shifts from the excavation mode to the crane mode, and the engine speed shown in the basic display 711 is changed. Actual load 711E and rated load 711F, which are the lifting loads during lifting work, are displayed next to 711D, which is the display of 711D.If the actual load 711E exceeds the rated load 711F, a warning display is placed above the basic display 711. A warning is displayed in area 711G.

To shift to the crane mode, when the operation button 720E is pressed, the monitor ECU 730 outputs a command to shift to the crane mode to the integrated ECU 800 and the communication device 820, and the integrated ECU 800 instructs the engine ECU 810 to send a low engine target rotation speed for the crane mode. A command is sent to the solenoid valve 830 to change the travel motor from 2nd speed to 1st speed.

The integrated ECU 800 receives the rotation angle signals of the boom 420 and the arm 430 detected by the angle sensors 802 and 803 installed in the boom 420 and the arm 430, and the rod pressure and bottom pressure of the boom cylinder 421 installed in the boom cylinder 421. The pressure signals detected by the pressure sensors 804 and 805 are input, and the integrated ECU 800 calculates the rated load 711F, which is the overturning load multiplied by a predetermined safety factor, from the rotation angle signal, and uses the pressure signal to calculate An actual load 711E, which is a lift load, is calculated. The calculation results are transmitted to communication device 820 and monitor ECU 730 and displayed on liquid crystal display 710.

Next, based on FIG. 8, a system for managing whether the hydraulic excavator 100 with a crane function is properly using the crane mode during lifting work will be described.

The communication device 820 transmits a lifting work signal, a transition command to crane mode, a rated load 711F, and an actual load 711E to the database server 840 via an external network by 3G, LTE, 4G, or 5G, and store these data. The client logs into the web server/API server 841 using the smartphone 900 and uses the data stored in the data server 840 to perform lifting work on the hydraulic excavator 100 with a crane function and to perform lifting work on the hydraulic excavator 100 with a crane function, along with date and time information. You can check monitoring information to see if crane mode was used during lifting work.

In addition to the command to shift to crane mode, the communication device 820 sends the detection signal of the non-contact sensor 801, the pressure signals detected by the pressure sensors 804 and 805, and the rotation angle signals of the angle sensors 802 and 803 to the database server 840. In that case, the determination of the lifting work, the rated load 711F and the actual load 711E are calculated by the web server/API server 841 each time in response to the request from the smartphone 900, and the monitoring information is confirmed by the smartphone 900. be able to.

Next, with reference to FIGS. 9 to 13, a control method for operating the display of the smartphone 900 of the lifting work management system for an excavator with a crane function will be described.

When the web server/API server 841 is accessed by the smartphone 900 in step S1, a login screen 910 is displayed on the display section of the smartphone 900. Then, if you tap the login mark 913 after entering your ID in the ID input area 911 and password in the password input area 912, the smartphone 900 will log in to the web server/API server 841, and the login screen 910 will change to the initial screen 920. Transition to. Note that if the ID storage selection area 913 is checked, the ID input will be omitted the next time the user logs in.

In step S2, when the user inputs the year to be specified in the year input area 921 in the Western calendar and selects the month using the month selection cursors 923 and 924, the initial screen 920 changes to a calendar display screen 930.

If the highlighted date 931 exists in the calendar in step S3, it is determined that there is lifting work based on the lifting work signal and there is no command to shift to crane mode, so crane mode is not used. The web server/API server 841 has made at least one of the first determination that there is no lifting load or the second determination that the actual load, which is the lift load during the lifting operation, exceeds the rated load. As a result, the construction site manager can easily find days when the crane mode is not being used properly while the excavator 100 with the crane function is performing lifting work. It is possible to easily manage whether the crane mode is being used properly. When the highlighted day display 931 is tapped, the calendar display screen 930 changes to a list display screen 940.

The list display screen 940 includes a date display area 941 that displays the year, month, and day, a work time display area 942 that displays the start time and end time of the work, a lifting work display area 943 that displays the presence or absence of lifting work, It has a crane mode display area 944 that displays whether the crane mode is on or off, which allows the construction site manager to check whether the crane mode is being used properly while the excavator with crane function 100 is performing lifting work. It can be easily managed as objective data.

The list display screen 940 displays, in a position adjacent to the lifting work display area 943, a number of items that are determined to be not in crane mode because it is determined that there is lifting work based on the lifting work signal and there is no command to transition to crane mode. Since the site supervisor has the first judgment display area 945 that displays the first judgment so that the first judgment can be visually recognized, the site supervisor can intuitively set the crane mode appropriately while the excavator with crane function 100 is performing lifting work. You can easily manage your usage.

The list display screen 940 has an actual load display area 946 that displays the actual load, which is the lift load during the lifting operation, and a rated load display area 947 that displays the rated load. For example, in the actual load display area 946 and the rated load display area 947, if the actual load exceeds the rated load during the lifting operation, the maximum values of the actual load and the rated load during the lifting operation may be displayed. Therefore, the construction site manager can easily manage as objective data whether the crane mode is being used appropriately by the excavator with crane function 100 during lifting work.

The list display screen 940 further includes a second judgment display area 948 that displays a second judgment that the actual load, which is the lift load during lifting work, exceeds the rated load in a manner that allows visual recognition, in the actual load display area 946. Since they are displayed adjacently, the site supervisor can easily and intuitively manage whether the crane mode is being used appropriately by the excavator with crane function 100 during lifting work.

When the return mark 948 is tapped in step S4, the list display screen 940 transitions to a calendar display screen 930.

The process ends when the logout mark 932 is tapped in step S5.

A modification of the embodiment will be described based on FIG. 14. The hydraulic excavator 100 with a crane function is equipped with a camera 806 that images the work of the work device 400, and has an image processing device 850 that processes images captured by the camera 806. The image processing device 850 can determine the lifting work by extracting and determining the characteristics of the lifting work from the captured image. For example, by using deep learning to learn an image of a hanging load suspended from a hook, it can be determined whether the captured image is a hanging work. An example of deep learning is CNN (Convolutional Neural Network), which takes a captured image as an input image, passes through convolutional layers and pooling layers multiple times, and finally passes through a fully connected layer to output it. If the work is determined to be a hanging work, the result is transmitted to the monitor ECU 730. Note that although the image processing device 720 performs the determination of hanging work, the captured image may be transmitted to an external server using a transmitting device, and the determination may be made by the external server. At that time, the actual load 711E, which is the lifting load, is calculated from the pressure signals detected by the pressure sensors 804 and 805, and only when the actual load 711E exceeds a specified value, the captured image is sent to an external server to determine whether or not there is lifting work. The communication load may be reduced by making this determination.

The integrated ECU 800 receives the rotation angle signals of the boom 420 and the arm 430 detected by the angle sensors 802 and 803 installed in the boom 420 and the arm 430, and the rod pressure and bottom pressure of the boom cylinder 421 installed in the boom cylinder 421. The pressure signals detected by the pressure sensors 804 and 805 are input, and the integrated ECU 800 calculates the rated load 711F, which is the overturning load multiplied by a predetermined safety factor, from the rotation angle signal, and uses the pressure signal to calculate An actual load 711E, which is a lift load, is calculated. The calculation result is transmitted to monitor ECU 730.

The monitor ECU 730 stores the presence or absence of transition to crane mode by pressing the operation button 720E, the determination result of lifting work, the rated load 711F, and the actual load 711E as a table.

Next, with reference to FIG. 5 and FIGS. 15 to 18, a method for controlling the display of the monitor device 700 of the lifting work management system for a hydraulic excavator with a crane function will be described.

When the operation button 720A of the monitor device 700 is pressed in step S6, the basic display 711 changes to a menu display 713.

In step S7, by pressing the operation buttons 720E, 720B, 720C, and 720D arranged under the cursor display 714C, the highlight 713B is moved to the position of "Manage crane mode" 713A, and then " When the user presses 720F located under "OK" 714A, the menu display 713 transitions to an initial screen display 715.

In step S8, press the operation buttons 720E and 720D to move the highlight 715D over the number on the numeric keypad display 715C and press 720F to enter the Western calendar in the year input area 715A and the month in the month display area 715B. When inputting , the initial screen display 715 changes to a calendar display 716.

When the highlighted day 716A is selected in step S9 by moving it using the operation buttons 720E, 720B, 720C, and 720D and 720F is pressed, the calendar display 716 changes to a list display 717. As a result, the construction site manager can easily find days when the crane mode is not being used properly while the excavator 100 with the crane function is performing lifting work. , it is possible to easily manage whether the crane mode is being used properly.

The list display screen 717 includes a date display area 717A that displays the year, month, and day, a work time display area 717B that displays the start time and end time of the work, a lifting work display area 717D that displays the presence or absence of the lifting work, It has a crane mode display area 717E that displays whether the crane mode is on or off, which allows the construction site manager to check whether the hydraulic excavator 100 with a crane function is properly using the crane mode during lifting work. can be easily managed as objective data.

The list display screen 717 shows, in a position adjacent to the lifting work display area 717D, a number of items that are determined not to be in crane mode because it is determined that there is a lifting work based on the lifting work signal and there is no command to shift to the crane mode. Since the site supervisor has the first judgment display area 717C in which the first judgment is visually recognized, the site supervisor can intuitively set the crane mode appropriately while the hydraulic excavator 100 with a crane function is performing lifting work. You can easily manage whether you are using it.

The list display screen 717 has an actual load display area 717G that displays the actual load, which is the lift load during the lifting operation, and a rated load display area 717H that displays the rated load. For example, in the actual load display area 717G and the rated load display area 717H, if the actual load exceeds the rated load during the lifting operation, the maximum values of the actual load and the rated load during the lifting operation may be displayed. Therefore, the construction site manager can easily manage as objective data whether the hydraulic excavator 100 with a crane function is properly using the crane mode during lifting work.

The list display screen 717 further includes a second judgment display area 77F in which the second judgment that the actual load, which is the lift load during lifting work, exceeds the rated load is visually recognized, in the actual load display area 936. Since they are displayed adjacent to each other, the site supervisor can easily and intuitively manage whether the hydraulic excavator with crane function 100 is using the crane mode appropriately during lifting work.

When the operation button 720A is pressed in step S10, the list display screen 717 changes to the basic display 711 and ends.

Although the smartphone 900 and the monitor device 700 have been mentioned as the terminal devices of this embodiment, the present invention is not limited thereto.

For example, the present invention can use a tablet or a personal computer as the terminal device.

In addition, the terminal device displays the determination result of the lifting operation determination means that determines whether or not the excavator is being hoisted, and the crane that determines whether or not the excavator has transitioned to a crane mode that restricts the movement of the excavator during the excavator hoisting operation. The determination result of the mode determining means and the date and time information may display not only data stored in a storage medium within the terminal device, but also data stored in a storage medium outside the terminal device.

Methods for exchanging data from a storage medium outside the terminal device include not only exchanging data via an external network using Ethernet, Wi-Fi, 3G, 4G, LTE, and 5G, but also directly exchanging data using a communication cable. You may.

Furthermore, the lifting work determination means is not limited to a method of determining images captured by the non-contact sensor 801 or the camera 806 using deep learning, and can be used between the bucket pin 447 that rotatably supports the hook 445 and the hook 445. A load cell may be installed and the determination may be made based on the presence or absence of a load signal detected by the load cell.

The present invention is not limited to hydraulic excavators, but can be applied to electric excavators, hybrid excavators, and the like. Changes can be made as appropriate.

The present invention relates to safety management of excavators with a crane function and has industrial applicability.

900 Smartphone (terminal device) 940 List display screen (first image) 941 Date display area 942 Working time display area 943 Lifting work display area (judgment result of lifting work determining means) 944 Crane mode display area (crane mode determining means (judgment result)

Claims (8)

An operation reception department,
A display method for a terminal device, comprising: a control unit that displays an image on a display unit based on a reception operation of the operation reception unit,
The image shows a determination result of a lifting operation determination means that determines whether or not the excavator is being hoisted, and a crane mode that determines whether or not the excavator has transitioned to a crane mode that restricts the movement of the excavator during the excavator hoisting operation. A display method for a terminal device, characterized in that the first image is composed of the determination result of the determination means and the date and time information when the hanging work was performed . Displaying on the first image a first display indicating a first determination that the determination result of the lifting work determining means is that there is a lifting work and that the determination result of the crane mode determining means is that there is no transition to crane mode. 2. The display method for a terminal device according to claim 1, characterized in that : 3. The display method for a terminal device according to claim 1, wherein the first image displays a lift load during the lifting operation and a rated load for the lifting operation at the same time . 4. The display method for a terminal device according to claim 3, wherein a second display indicating a second determination that the lift load exceeds the rated load is simultaneously displayed on the first image . The image is a second image displaying a calendar composed of a plurality of dates, and the second image announces the date on which at least one of the first determination or the second determination occurred among the dates. 5. The display method for a terminal device according to claim 4, further comprising a third display for displaying an image . 6. The terminal operation according to claim 5, wherein the operation receiving section assigns an operation for transitioning from the second image to the first image after selecting the third display to the operation receiving section. How to display the device . 7. The display method for a terminal device according to claim 6, wherein the lifting work determining means makes the determination based on characteristics of the lifting work of the shovel in an image taken by a camera mounted on the shovel . The lifting work determination means makes a determination based on the captured image distributed to a network via a communication device installed in the excavator, and the captured image is linked to the lift load, and the lift load is below a specified value. 8. The display method for a terminal device according to claim 7, wherein the captured image is distributed to a network when the threshold is exceeded .

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