Work support system, work support method, and work support program

Abstract

To provide a work support system, a work support method, and a work support program to support lifting work using BIM data.SOLUTION: A management device 20 comprises: an information storage device recording a three-dimensional model composed of multiple members and a three-dimensional model of a lifting device; and a control part 21 connected to an interface part. The control part 21 identifies a position of the three-dimensional lifting device model and a lifting target member in the three-dimensional model, and identifies a lifting condition based on a position of the three-dimensional lifting device model and a position and an attribute of the lifting target member. The control part 21 identifies a liftable load corresponding to the lifting condition in a rated total load table, and outputs information indicating the propriety of the lifting depending on results of the comparison between a weight of the lifting target member and the liftable load in the lifting condition in the rated total load table output to the interface part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a work assistance system, a work assistance method, and a work assistance program that output work assistance in a lifting device such as a crane. [Background technology]

[0002] Today, building design often involves the use of BIM (Building Information Modeling) software (hereinafter, BIM software). This BIM software allows for the management of various design, structural, and facility design information using 3D models. When lifting components of a building designed using BIM software, the work content may be confirmed in advance. A work support system for ensuring safety at the work site during lifting work has been disclosed (see, for example, Patent Document 1). The support device disclosed in Patent Document 1 includes a control unit that executes BIM software to place building component models (hereinafter, component models) in a virtual three-dimensional space. This control unit places a lifting device model in the virtual three-dimensional space. When a component model to be lifted is specified, the system determines whether the lifting device model can be used to lift the component, based on the working distance between the center of gravity of the component model and the location of the lifting device model. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-111110 Summary of the Invention [Problem to be solved by the invention]

[0004] As described in Patent Document 1, BIM data, which is design data used in construction, is generated by BIM software. When checking lifting work at a construction site, the person in charge of lifting work may want to use this BIM data to conduct reviews and confirmations. However, for lifting work personnel, operating BIM software can be difficult and challenging. Furthermore, lifting work personnel are often not accustomed to handling BIM data. [Means for solving the problem]

[0005] A work support system for solving the above problems includes an information storage unit that stores a 3D model composed of multiple components and a 3D lifting device model, and a control unit connected to an interface unit. The control unit identifies the position of the 3D lifting device model and the component to be lifted in the 3D model, identifies lifting conditions based on the position of the 3D lifting device model and the position and attributes of the component to be lifted, identifies a liftable load corresponding to the lifting conditions in a rated load table, and outputs information indicating whether the component can be lifted based on a comparison result between the weight of the component to be lifted and the liftable load under the lifting conditions in the rated load table output to the interface unit. [Effects of the Invention]

[0006] According to the present invention, lifting operations can be supported using BIM data. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an explanatory diagram of a system according to a first embodiment. [Figure 2] FIG. 2 is an explanatory diagram of a hardware configuration of the first embodiment. [Figure 3] FIG. 2 is an explanatory diagram of a crane model according to the first embodiment. [Figure 4] FIG. 1 is an explanatory diagram of a system architecture according to a first embodiment. [Figure 5]FIG. 2 is an explanatory diagram of data used in the first embodiment. [Figure 6] FIG. 2 is an explanatory diagram of a processing procedure according to the first embodiment. [Figure 7] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 8] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 9] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 10] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 11] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 12] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 13] FIG. 2 is an explanatory diagram of a display screen according to the first embodiment. [Figure 14] FIG. 10 is an explanatory diagram of a processing procedure according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] (First embodiment) A first embodiment of a work support system, a work support method, and a work support program will be described below with reference to Figures 1 to 13. In this embodiment, the work support system will be described as being used when a lifting device (crane) is used in construction work on a building (architecture). In this embodiment, as shown in FIG. 1, a design terminal 10 and a management device 20 connected via a network are used.

[0009] (Hardware configuration description) 2, the hardware configuration of the information processing device H10 that constitutes the design terminal 10 and the management device 20 will be described. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage device H14, and a processor H15. Note that this hardware configuration is an example, and it can also be realized by other hardware.

[0010] The communication device H11 is an interface that establishes a communication path with other devices and executes data transmission and reception, and is, for example, a network interface or a wireless interface.

[0011] The input device H12 is a device that accepts input of various information, such as a mouse or a keyboard. The display device H13 is a display that displays various information. In this embodiment, the input device H12 and the display device H13 function as an interface unit.

[0012] The storage device H14 stores data and various programs for executing various functions of the design terminal 10 and the management device 20. Examples of the storage device H14 include a ROM, a RAM, and a hard disk.

[0013] The processor H15 uses programs and data stored in the storage device H14 to control each process in the design terminal 10 and the management device 20. Examples of the processor H15 include a CPU and an MPU. The processor H15 loads programs stored in a ROM or the like into a RAM and executes various processes for each process.

[0014] The processor H15 is not limited to a processor that performs all of its processing using software. For example, the processor H15 may include a dedicated hardware circuit (e.g., an application-specific integrated circuit (ASIC)) that performs hardware processing for at least some of the processing it performs. That is, the processor H15 may be configured with the following:

[0015] [1] One or more processors that operate according to a computer program (software). [2] One or more dedicated hardware circuits that perform at least some of the various processes [3] Circuits containing combinations of these The processor includes a CPU and memory, such as RAM and ROM, that stores program code or instructions configured to cause the CPU to perform processes. Memory, or computer-readable media, includes any available media that can be accessed by a general-purpose or special-purpose computer.

[0016] (System Configuration) Next, each function of the work support system will be described with reference to Fig. 1. In this embodiment, a case where a crane is used in a building designed using BIM software is used.

[0017] (System function description) The design terminal 10 is a computer terminal for designing a 3D model of a building (3D CAD processing) using BIM software. In this embodiment, for example, "Autodesk Revit" (registered trademark) is used as the BIM software. The building file (RVT file) generated by the BIM software can manage not only the shapes of elements (3D component data) used in the building, but also the attributes (properties) of the building elements.

[0018] The management device 20 is a computer system that supports the confirmation of lifting by a crane. The management device 20 includes a control unit 21, a building information storage unit 22, a display information storage unit 23, an object information storage unit 24, and a crane information storage unit 25.

[0019] The control unit 21 supports the work of checking the lifting weight by the crane. To this end, the control unit 21 functions as a common management unit 211, a data editing unit 212, and a work support unit 213 by executing programs that perform each stage (common management stage, data editing stage, and work support stage).

[0020] The common management unit 211 realizes a CDE (Common Data Environment) by comprehensively managing data (such as 3D models) used in the construction of a building. In this embodiment, it is used to convert building files (RVT format) into display files (SVF format). Note that the common management unit 211 may use a service provided by a cloud server, such as "ACC (Autodesk Construction Cloud)" (registered trademark). This service can convert files of various formats into files in SVF format.

[0021] The data editing unit 212 edits (changes and adjustments) the building file. For example, "Autodesk Design Automation API for Revit" (registered trademark) can be used for the data editing unit 212. In this embodiment, it is used to convert the building file (RVT format) into an object file (OBJ format) for each instance.

[0022] The work support unit 213 is realized by a crane function application and provides support for checking lifting work using a crane. This work support unit 213 includes a viewer V1 equipped with an API for handling 3D models. For example, "Forge Viewer" (registered trademark) can be used as this viewer V1. This "Forge Viewer" displays 3D models created on the platform "Autodesk Forge" (registered trademark) on a browser. This work support unit 213 holds information regarding a specified percentage (%) of the liftable weight. Then, when the load to be lifted is 100% of the specified percentage, the work support unit 213 changes the display format of the work screen.

[0023] The building information storage unit 22 stores building files (RVT format) created by BIM software. These building files are recorded when a building is designed using 3D CAD. The building file includes a file code and, for each component (element), a unique code, component type information, element model, placement information, and attribute information.

[0024] The file code information is an identifier for identifying a building file, and the location of the construction site can be identified by this file code information. The unique code is an identifier for identifying an instance (element) of a component included in this building file.

[0025] The component type information is information about the type of this component (such as "column," "beam," or "window"). The element model is information about the three-dimensional model (BIM model) of this component. The placement information is information about the coordinates (XYZ) at which each element model is placed. The attribute information is the attribute information of this element (specifications, dimensions, weight, material, etc.). Note that specifications, dimensions, weight, material, etc. are examples of attributes for determining lifting conditions, and some of them or other information may also be used.

[0026] Display files are recorded in the display information storage unit 23. These display files use, for example, SVF (Streaming Vector Format). This allows for shared reference of geometry with the same shape as the whole, instead of multiple instances, thereby reducing memory usage. Furthermore, 3D display can be performed using a general-purpose application such as a web browser. These display files are recorded when the common management unit 211 converts a building file into a display file. The display file is configured to include, for each element (display model) in relation to the file code, a unique code, element model, placement information, and attribute information.

[0027] The file code is an identifier for identifying a display file. The unique code is an identifier for identifying the elements (components) included in this display file. Here, the unique code of the elements included in the source building file is used.

[0028] The element model is information about the 3D model (display model) of this component. Here, the same 3D shape as the element included in the original building file is used. The placement information is information about the coordinates (XYZ) at which each element model is placed. Here, the coordinates of the elements included in the source building file are used. The attribute information is the attribute information of this element (specifications, dimensions, weight, material, planned construction date, etc.). Here, the attribute information included in the original building file is used.

[0029] The object information storage unit 24 records an object file for each element to be applied, corresponding to the element model included in the display file. This object file uses, for example, a file format (OBJ format) for recording shape data of objects used in 3D computer graphics. In this OBJ format, the coordinates of vertices that represent the shape of the element (model) in 3D space, information on the faces that make up the object surface, parameters that represent curves and curved surfaces, etc. are written in text format. This object file is recorded when the data editing unit 212 generates an object file from a building file. The object file records a file code, an element model as 3D geometry information, and placement information for each component (object model).

[0030] The file code is an identifier for identifying an object file. This object file is linked to a unique code that identifies a managed member (instance) by linking information recorded in a predetermined storage unit.

[0031] The element model is information about the 3D model (object model) of this component. Here, the same 3D shape as the element contained in the original building file is used. This 3D shape can be used to calculate the area and volume of the region occupied by the element model. The placement information is information about the coordinates (XYZ) at which each element model is placed. Here, the coordinates of the elements included in the source building file are used.

[0032] The crane information storage unit 25 records crane management data related to the crane used for lifting work. This crane management data is recorded when a crane is registered. The crane management data records crane setting information for each crane type. Furthermore, the crane management data records crane model and total rated load table data.

[0033] The crane type is an identifier for identifying the type of crane, such as a "50t crawler crane" or a "tower crane." The crane setting information is information about the specifications of the crane type, including the number of boom sections, the number of outriggers, the outrigger positions, the outrigger extension length, the rotor origin position, the boom origin position, the available boom length, and the number of jib patterns.

[0034] The crane model is a 3D model for displaying a crane in 3D space. The crane model is composed of OBJ files. As shown in Figure 3, the crane model M1 is composed of the following objects: a main body M2, a rotating body M3, and multiple booms M4. Here, it can be composed of multiple stages of booms M4(0) to M4(n). The main body M2 is connected to the following objects: an outrigger M5, a hook M6, and a wire M7. The rotating body M3 is connected to an object representing a lifting height diagram M8.

[0035] Lifting Height Diagram M8 is an image of a lifting height table that shows the performance of a crane. Lifting Height Diagram M8 plots the working radius on the horizontal axis and the lifting height from the ground on the vertical axis, depending on the outrigger extension conditions, etc., and at the intersection of these two axes, the load that the crane can lift under those conditions is displayed. The lifting height from the ground is the height that the hook can be raised above the ground, and the working radius is the distance from the tip of the crane's boom to the center of gravity of the load. This lifting height diagram M8 allows you to understand the working range of the crane. The final boom M4(n) is connected to a wire M9 and a plurality of jib M10 objects. In this example, it can be configured with a plurality of jibs M10(0) to M10(m).

[0036] The rated load table data is a table that lists the maximum load (in this case, the maximum load) that the crane can lift for each outrigger extension condition, jib use condition, and boom rotation angle condition, by boom length and working radius. The rated load table is a table made up of multiple cells with the working radius on the vertical axis and the boom length on the horizontal axis, and each cell records the maximum load that can be lifted.

[0037] (System Architecture for Display) FIG. 4 shows the system architecture of the management device 20. The management device 20 uses an OS 110 implemented on the hardware 100. The OS 110 includes a graphics function control library. A browser 120, a software program that displays web pages, runs on the OS 110. The browser 120 serves as a platform for 3D rendering. A virtual machine and a graphics API are built into the browser 120. A virtual machine is software that enables different operating systems and applications to run on the same computer. A graphics API is a software interface for performing graphics processing. A rendering function V11 runs on a graphics API such as WebGL in the browser 120 to display images on the screen. For example, "Three.js" can be used as the rendering function V11. A crane function application written in a scripting language runs on the browser 120 within a web page 130.

[0038] Here, the display file generated from the building file created by the BIM software is output by the viewer V1. Also, the object file generated from the building file is output by the viewer V1 via the rendering function V11.

[0039] 3D objects created by BIM software (described later) are displayed in the 2D-3D graphic display area (for example, "canvas") on the browser using the rendering function (WebGL). Furthermore, a crane model is displayed via the Viewer V1 renderer.

[0040] 5, in this embodiment, a display file and an object file are generated from a building file. The display file is generated by the common management unit 211. The object file is generated by the data editing unit 212. The display file and the object file are then displayed on the display device H13 in a three-dimensional operable manner by the rendering function V11 incorporated in the viewer V1.

[0041] (Work support processing) The work support process will be described with reference to Fig. 6. When checking the lifting work of the members, the person in charge inputs a check start command using the input device H12 in the management device 20.

[0042] In this case, the control unit 21 of the management device 20 executes a building identification process (step S10). Specifically, the work support unit 213 of the control unit 21 outputs a target designation screen to the display device H13. In this case, the person in charge designates the file code of the desired building file in the building information storage unit 22. Then, when the work support unit 213 identifies the file code of the building file designated on the target designation screen, it acquires the designated file code and the building file of the target floor from the building information storage unit 22. Next, the common management unit 211 converts the building file (RVT format) into a display file (SVF format). Then, the common management unit 211 records the converted display file in the display information storage unit 23.

[0043] The data editing unit 212 generates an object file for each managed component (instance). This object file is linked to the building file by linking information. The data editing unit 212 then records the generated object file in the object information storage unit 24. The common management unit 211 and data editing unit 212 of the control unit 21 then output the display file and the 3D component model generated from the object file to the operation screen of the display device H13.

[0044] Next, the control unit 21 of the management device 20 executes a process for identifying a scheduled work date (step S11). Specifically, the work support unit 213 of the control unit 21 outputs a schedule specification screen to the display device H13. The person in charge uses this schedule specification screen to specify a scheduled work date. In this case, the work support unit 213 uses the building information storage unit 22 to identify element models that exist before the scheduled work date specified on the schedule specification screen. Then, the work support unit 213 reconstructs the component model using the identified element model and outputs the reconstructed component model to the operation screen of the display device H13.

[0045] Next, the control unit 21 of the management device 20 executes a crane materialization process (step S12). Specifically, the work support unit 213 of the control unit 21 outputs an operation screen to the display device H13. The person in charge uses this operation screen to operate the crane. In this case, the work support unit 213 acquires arbitrary crane management data from the crane information storage unit 25 and outputs a crane model (three-dimensional lifting device model) to the operation screen. In this case, the work support unit 213 adjusts the size of the crane model according to the scale of the operation screen. Then, it displays the crane model at a position that does not overlap with the component models on the operation screen. Note that the placement of the crane model is not limited to a position that does not overlap with the component models. For example, the crane model may be placed at a position according to the size of the crane model from a predetermined reference position. As shown in FIG. 7, a crane model M11 is displayed on the operation screen 500.

[0046] Next, the control unit 21 of the management device 20 executes a specification setting process (step S13). Specifically, the work support unit 213 of the control unit 21 outputs a crane setting screen.

[0047] Here, as shown in FIG. 8 , the specifications of the crane can be determined using a crane setting screen 511 on the operation screen 510. On this crane setting screen 511, specifications such as the crane type, boom conditions, jib conditions, and outrigger conditions can be set. The boom conditions allow the length of the boom, the boom hoisting angle, and the rotation angle to be set. The jib conditions allow the use of a jib and the jib angle to be set. The outrigger conditions allow the use of an outrigger and the extension length to be set. The work support unit 213 updates the crane model M11 with the specifications specified on the crane setting screen 511.

[0048] Next, the control unit 21 of the management device 20 executes a process for setting the crane position (step S14). Specifically, the work support unit 213 displays the crane model so that it can be moved within the operation screen. Then, the person in charge selects the crane model M11 using the input device H12 and moves it to a desired position. The work support unit 213 may also output a coordinate input screen and move the crane model M11 to a position whose coordinates are specified by the input device H12.

[0049] Next, the control unit 21 of the management device 20 executes a process for identifying a lifting member (step S15). Specifically, the person in charge specifies an element model to be lifted from among the member models displayed on the operation screen of the display device H13. In this case, the work support unit 213 of the control unit 21 identifies the specified element model.

[0050] Next, the control unit 21 of the management device 20 executes a process for specifying the boom angle and boom length (step S16). Specifically, the work support unit 213 of the control unit 21 uses the 3D geometry information of the object file recorded in the object information storage unit 24 to specify the center of gravity of the member to be lifted. Next, the work support unit 213 calculates the boom angle and boom length as lifting conditions so that the tip of the boom from which the hook is suspended is located above the center of gravity. In this case, the work support unit 213 specifies the preceding member that was constructed before the member to be lifted. Then, the work support unit 213 uses a boom angle that prevents the boom from interfering with the preceding member. Note that the method for determining the boom angle is not limited to taking the preceding member into consideration. For example, the hook may be placed a predetermined distance from the top level of the member to be lifted, and the boom tip may be positioned at a predetermined height above it.

[0051] Next, the control unit 21 of the management device 20 executes a process to determine whether lifting is possible (step S17). Specifically, the work support unit 213 of the control unit 21 selects a rated load table according to the outrigger extension conditions, jib use conditions, and boom rotation angle conditions. Then, the work support unit 213 identifies the maximum load recorded in the cell corresponding to the working radius and boom length in the rated load table.

[0052] As shown in FIG. 9, a lifting target input screen 521 is output on the operation screen 520. On this lifting target input screen 521, the material and specific gravity of the lifting target component are set. The work support unit 213 then calculates the volume using the 3D geometry information of the lifting target component and multiplies it by the specific gravity to obtain the weight. If the weight is recorded in a building file stored in the building information storage unit 22, the work support unit 213 may obtain the weight of the lifting target component from the building file. The weight and specific gravity of the lifting target component may also be specified by the person in charge. Alternatively, the material of the lifting target component may be specified from a list of candidate materials, and the work support unit 213 may calculate the weight from the volume using the specific gravity corresponding to the material. Alternatively, a value specified by the person in charge from the attribute information of the lifting target component may be used as the weight.

[0053] On the operation screen 520, the reachable operating range 522 of the boom M4 is displayed as a translucent cylinder. The work support unit 213 changes this translucent color depending on the load situation. For example, if the evaluated load obtained by dividing the weight by the safety factor is less than a specified percentage of the liftable weight on the rated total load table, the work support unit 213 displays a translucent color (e.g., translucent green), but if the evaluated load is between the specified percentage and 100% of the specified percentage, the work support unit 213 changes the translucent color to a warning color (e.g., translucent red). This safety factor is a value designated in advance by the person in charge.

[0054] Then, the work support unit 213 compares the maximum load with the weight of the member to be lifted to determine whether or not the member can be lifted. Here, if the evaluated load is equal to or less than the maximum load, it is determined that the member can be lifted. 10, a determination result screen 531 is output on the operation screen 530. This determination result screen 531 includes the result of the determination as to whether or not lifting is possible.

[0055] Next, the control unit 21 of the management device 20 executes a display process of the total rated load table (step S18). Specifically, the work support unit 213 of the control unit 21 acquires the total rated load table data from the crane information storage unit 25 and outputs it to the display device H13. As shown in FIG. 11, a total rated load table 541 is output on an operation screen 540.

[0056] Next, the control unit 21 of the management device 20 executes a process for determining the display format according to the margin (step S19). Specifically, the work support unit 213 of the control unit 21 calculates the margin by dividing the maximum load by the weight of the member to be lifted. Next, the work support unit 213 compares the margin with a reference value to determine the display format. As the display format, for example, a color scheme that can identify the lifting status is assigned in order of the margin closest to "1". For example, a warning color (red), a caution color (yellow), a safety color (blue), etc. are used. Then, the work support unit 213 changes the display format (here, the display color) according to the margin in the rated total load table output to the display device H13. As shown in FIG. 11, in a total rated load table 541, lifting conditions 542 are displayed in the determined color scheme.

[0057] Next, the control unit 21 of the management device 20 executes processing for arranging the lifting height diagram (step S20). Specifically, the work support unit 213 of the control unit 21 aligns the origin of the lifting height diagram with the origin of the boom, arranges the lifting height diagram at a position that includes the boom object within the plane of the lifting height diagram, and outputs the diagram to the display device H13. As shown in FIG. 12, on the operation screen 550, a lifting height diagram M9 is displayed in accordance with the arrangement of the boom M4 of the crane model M1.

[0058] Furthermore, in steps S13 to S15, if the crane type, outrigger, crane position, lifting member, or the like is changed, the control unit 21 of the management device 20 re-executes the processing from each step onwards.

[0059] As shown in Fig. 13, assume that the crane type is changed on the crane setting screen 511. For example, if the type is changed from "rough terrain crane" to "crawler crane (tower)," the operation screen 560 is updated to display the crane model M12 of the specified crane type.

[0060] (Action of this embodiment) The element models contained in the building file set up by BIM are converted into display files and object files, which are then displayed in the browser along with the crane model.

[0061] (Effects of this embodiment) (1-1) In this embodiment, a display file (SVF file) generated from a building file is recorded in the display information storage unit 23. Furthermore, an object file is recorded in the object information storage unit 24 for each element to which the 3D model is to be applied, in association with the element model included in the display file. This allows 3D display to be performed using a general application such as a web browser, even if BIM software is not installed on the terminal displaying the 3D model.

[0062] (1-2) In this embodiment, crane management data is recorded in the crane information storage unit 25. This allows a 3D crane model to be placed relative to the 3D component model generated by BIM. Then, the positional relationship between the crane model and the object to be lifted included in the component model can be identified.

[0063] (1-3) In this embodiment, the control unit 21 of the management device 20 executes a process for identifying a scheduled work date (step S11), thereby making it possible to identify objects that will be present during the crane work.

[0064] (1-4) In this embodiment, the control unit 21 of the management device 20 executes a crane materialization process (step S12). This allows for the generation of a crane model to be placed in three-dimensional space using crane patterns with similar shapes.

[0065] (1-5) In this embodiment, the control unit 21 of the management device 20 executes a specification setting process (step S13). This allows the accurate determination of the maximum load of the crane, which varies depending on the usage conditions, such as the extension state of the outriggers.

[0066] (1-6) In this embodiment, the control unit 21 of the management device 20 executes a process for setting the crane position (step S14), which allows the crane to be placed at a desired position in consideration of the work site.

[0067] (1-7) In this embodiment, the control unit 21 of the management device 20 executes a process for identifying a lifting member (step S15). This allows the target of the lifting work to be identified in the member model generated by BIM.

[0068] (1-8) In this embodiment, the control unit 21 of the management device 20 executes a process for specifying the boom angle and boom length (step S16). As a result, when performing a lifting operation, the center of gravity position of the object to be lifted is used, so that the operation can be confirmed according to the actual work situation.

[0069] (1-9) In this embodiment, the control unit 21 of the management device 20 executes a process for determining whether or not lifting is possible (step S17), thereby making it possible to confirm whether or not the lifting target member can be lifted.

[0070] (1-10) In this embodiment, the display process of the rated load table (step S18) and the display format determination process (step S19) are executed depending on the margin. This allows the relationship between the maximum load and the weight of the member to be lifted to be understood in the rated load table.

[0071] (1-11) In this embodiment, the control unit 21 of the management device 20 executes a process for arranging the lifting height diagram (step S20). As a result, the lifting height diagram is displayed according to the boom arrangement, so that the lifting situation can be grasped in three-dimensional space.

[0072] (Second embodiment) A second embodiment of the work support system, work support method, and work support program will be described below with reference to FIG. 14. In the first embodiment, the control unit 21 of the management device 20 executes a process for determining whether or not a lift is possible (step S17) and a process for determining the display format depending on the margin (step S19). This evaluation of the lifting status is performed for the member identified by the process for identifying the member to be lifted (step S15). In the second embodiment, the method is modified so that the lifting possibility is determined during a series of lifting operations. For example, consider a case where a crane is fixed and installed at one location, and the lifting possibility of multiple members to be lifted at that location is individually confirmed. In the following embodiments, parts similar to those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

[0073] (Work support processing) The work support process will be described with reference to FIG. Here, the control unit 21 of the management device 20 executes a process for identifying a building (step S30) and a process for identifying a scheduled work date (step S31), similar to steps S10 and S11. Furthermore, similar to steps S12 and S13, the control unit 21 executes a process for instantiating a crane (step S32), a process for setting specifications (step S33), and a process for setting a crane position (step S34).

[0074] Next, the control unit 21 of the management device 20 executes a process for identifying the lifting member (step S35). Specifically, the person in charge specifies the element model to be lifted in the component model displayed on the operation screen of the display device H13. Here, multiple element models are specified. For example, multiple element models to be lifted during a predetermined period, such as the day of the scheduled work date, are specified.

[0075] Next, the control unit 21 of the management device 20 sequentially identifies the processing target (member to be lifted) from among the plurality of element models. Then, for each processing target, the control unit 21 of the management device 20 executes a process of specifying the boom angle and boom length (step S36), similar to step S16. Furthermore, similar to steps S17 and S19, the control unit 21 executes a process of determining whether lifting is possible (step S37), and a process of determining the display format depending on the margin (step S38).

[0076] The above process is then repeated for all the processing targets. Next, the control unit 21 of the management device 20 executes the display process of the total rated load table in the same manner as in step S17 (step S39).

[0077] Next, the control unit 21 of the management device 20 executes a comprehensive evaluation process (step S40). Specifically, the work support unit 213 of the control unit 21 changes each cell in the rated total load table in a display format determined for each member to be lifted. Next, the work support unit 213 determines whether the lifting work is appropriate based on the margin of safety of all cells whose display has been changed. Here, if there is a cell with a low margin of safety, a suggestion to change the crane type or crane position is output to the display device H13.

[0078] (Effects of this embodiment) In addition to the effects (1-1) to (1-11) above, the following effects can be obtained. (2-1) In this embodiment, for each processing object, the control unit 21 of the management device 20 executes a process of specifying the boom angle and boom length (step S36) and a process of determining the display format (step S38) depending on the margin. The multiple members to be lifted by a crane fixed and installed in one location include heavy members and members located far away, and the lifting conditions vary. In the present invention, the lifting conditions of the multiple members to be lifted in the lifting operation at this location can be checked all at once.

[0079] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. In the above embodiment, the present invention is applied to the construction of a building. However, the application of this embodiment is not limited to the construction of a building. For example, the present invention may be applied to civil engineering work for constructing a building.

[0080] In the above embodiment, the management device 20 includes a control unit 21, a building information storage unit 22, a display information storage unit 23, an object information storage unit 24, and a crane information storage unit 25. The hardware configuration is not limited to this. For example, the building information storage unit 22 to the crane information storage unit 25 may be provided on different servers. In this case, the control unit 21 of the management device 20 acquires various pieces of information from the respective storage units via a network. Furthermore, for example, the functions of the control unit 21 may be realized by a cloud service, and various pieces of information may be stored on a cloud server.

[0081] In the above embodiment, a display file and an object file are used for displaying on the browser. However, as long as it is possible to display either the component model or the crane model on the browser, it is sufficient to use either one.

[0082] In the above embodiment, the crane information storage unit 25 records crane management data related to the crane used for lifting work. The crane management data records crane setting information, crane model, and rated load table data for each crane type. The crane model and rated load table may be recorded separately. For example, the crane model may be recorded for each crane type, and the rated load table may be recorded for each manufacturer and model. The lifting height diagram may also be recorded for each manufacturer and model.

[0083] In the above embodiment, the control unit 21 of the management device 20 executes a process for setting the crane position (step S14). Here, a person in charge sets the position of the crane model. Alternatively or additionally, the control unit 21 of the management device 20 may set the crane position. In this case, the control unit 21 sequentially moves the crane model using a plurality of crane position candidates provided on the work screen. Then, the control unit 21 sequentially identifies and outputs crane position candidates with high margins according to the margins in the total rated load table.

[0084] In the above embodiment, the feasibility of lifting is examined for one designated component. In addition, the feasibility of lifting may be examined for multiple selected components as a single unit. Specifically, the control unit 21 of the management device 20 calculates the center of gravity of each component, and then combines them to determine the overall center of gravity. In this case, for example, it may be assumed that each component has the same specific gravity. In this case, the feasibility of lifting is determined after the overall weight is determined.

[0085] Next, the technical ideas that can be understood from the above-described embodiment and other examples will be described below. (a) the control unit Output the total rated load table, 2. The work support system according to claim 1, wherein the display form of the icon indicating the specified rated load in the total rated load table is changed according to the result of the comparison.

[0086] (b) The work support system according to claim 1 or (a), characterized in that the control unit outputs candidate positions of lifting devices capable of lifting, depending on the result of the comparison. (c) The work support system according to claim 1, (a) or (b), characterized in that the control unit outputs a lifting height diagram in correspondence with the three-dimensional lifting device model. [Explanation of symbols]

[0087] 10...design terminal, 20...management device, 21...control unit, 211...common management unit, 212...data editing unit, 213...work support unit, 22...building information storage unit, 23...display information storage unit, 24...object information storage unit, 25...crane information storage unit.

Claims

1. an information storage unit that stores a three-dimensional model configured by a plurality of members and a three-dimensional lifting device model; A work assistance system including a control unit connected to an interface unit, The control unit Identifying the position of the three-dimensional lifting device model and the member to be lifted in the three-dimensional model; Identifying a lifting condition based on the position of the three-dimensional lifting device model and the position and attributes of the lifting target member; Identify the liftable load corresponding to the lifting conditions in the total rated load table, A work support system characterized by outputting information indicating whether lifting is possible or not based on the result of comparing the weight of the item to be lifted with the liftable load under the lifting conditions in the rated total load table output to the interface unit.

2. an information storage unit that stores a three-dimensional model configured by a plurality of members and a three-dimensional lifting device model; A method for assisting a lifting operation using a work assistance system including a control unit connected to an interface unit, The control unit Identifying the position of the three-dimensional lifting device model and the member to be lifted in the three-dimensional model; Identifying a lifting condition based on the position of the three-dimensional lifting device model and the position and attributes of the lifting target member; Identify the liftable load corresponding to the lifting conditions in the total rated load table, A work support method characterized by outputting information indicating whether lifting is possible or not based on the result of comparing the weight of the item to be lifted with the liftable load under the lifting conditions in the rated total load table output to the interface unit.

3. an information storage unit that stores a three-dimensional model configured by a plurality of members and a three-dimensional lifting device model; A program for supporting a lifting operation using a work support system including a control unit connected to an interface unit, The control unit Identifying the position of the three-dimensional lifting device model and the member to be lifted in the three-dimensional model; Identifying a lifting condition based on the position of the three-dimensional lifting device model and the position and attributes of the lifting target member; Identify the liftable load corresponding to the lifting conditions in the total rated load table, A work support program characterized by functioning as a means for outputting information indicating whether lifting is possible based on the result of comparing the weight of the item to be lifted with the liftable load under the lifting conditions in the rated total load table output to the interface unit.

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