JP7380941B2 - Work support system, work support method and work support program - Google Patents

Description

The present invention relates to a work support system, a work support method, and a work support program that output work support in a lifting device such as a crane.

BIM (Building Information Modeling) is sometimes used in the design of buildings today. By using this BIM, various information regarding structural design and equipment design can be managed for the three-dimensional model.

Furthermore, a BIM-based on-site facility automation modeling system is also being considered (see, for example, Patent Document 1). The technique disclosed in this document includes an object section, an input section, and a control section. The object section selects and edits the size, type, and model of an object including one or more of the members and equipment arranged as on-site facilities. The input section sets the position and section of the object edited in the object section by drawing lines. The control unit controls the object model based on the editing data of the object unit to be arranged along the line set by the input unit, and outputs the model to the display. Then, the amount of equipment and parts used for facilities at architectural and civil engineering construction sites is calculated, and a three-dimensional model is created that can automatically arrange temporary equipment to match the site.

Furthermore, a technology is being considered that allows an operator to objectively grasp the condition of a crane and its suspended load using data used in BIM (see, for example, Patent Document 2). In the technique disclosed in this document, the crane operation support device measures the attitude of the movable part and measures the height of the hook block. Then, based on the measurement results, the movable part model, hook block model, and suspended load model are arranged in a virtual three-dimensional space, and the movable part model, hook block model, and suspended load model are displayed on the display device through drawing processing. .

Special Publication No. 2018-522297 JP 2019-59593 Publication

However, when carrying out lifting work, the content of the work is often checked in advance at the site in order to ensure safe and accurate work. In this case, it takes time to confirm the arrangement of the crane, the position of the suspended members, etc.

A work support system for solving the above problem includes a control unit that executes a BIM application that arranges structural material models in a three-dimensional space. When the control unit places a lifting equipment model in the three-dimensional space and a structural material model to be lifted is specified, the control unit identifies the center of gravity position of the structural material model, and identifies the center of gravity position and the lifting equipment model. Depending on the working distance from the model arrangement, a determination is made as to whether or not the lifting device model is capable of lifting.

According to the present invention, it is possible to check the situation at the work site for lifting work.

FIG. 2 is an explanatory diagram of the system of this embodiment. FIG. 2 is an explanatory diagram of the hardware configuration of this embodiment. An explanatory diagram of template information of this embodiment. FIG. 2 is an explanatory diagram of a crane template according to the present embodiment, in which (a) is a top view and (b) is a side view. An explanatory diagram of crane information of this embodiment. An explanatory diagram of BIM information of this embodiment. FIG. 3 is an explanatory diagram of the processing procedure of this embodiment. FIG. 3 is an explanatory diagram of the arrangement of templates on the CAD screen of the present embodiment. An explanatory diagram when the size of a rough terrain crane is reflected on the CAD screen of this embodiment. An explanatory diagram when the size of a crawler crane is reflected on the CAD screen of this embodiment. An explanatory diagram when a nearby member is selected by the rough terrain crane on the CAD screen of the present embodiment. An explanatory diagram when a member at a far position is selected by the rough terrain crane on the CAD screen of the present embodiment. FIG. 4 is an explanatory diagram when a nearby member is selected by the crawler crane on the CAD screen of the present embodiment. An explanatory diagram when a member at a far position is selected by the crawler crane on the CAD screen of the present embodiment.

One embodiment will be described below with reference to FIGS. 1 to 14. This embodiment will be described as a work support system used when a lifting device (rough terrain crane, crawler crane) is used in a building construction site.
In this embodiment, as shown in FIG. 1, a heavy equipment information server 10 and a support device 20 are used.

(Explanation of hardware configuration)
The hardware configuration of the information processing device H10 that constitutes the heavy equipment information server 10 and the support device 20 will be described using FIG. 2. The information processing device H10 includes a communication device H11, an input device H12, a display device H13, a storage unit H14, and a processor H15. Note that this hardware configuration is just an example, and it can also be implemented using other hardware.

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, a wireless interface, or the like.

The input device H12 is a device that accepts input of various information, and is, for example, a mouse, a keyboard, or the like. The display device H13 is a display or the like that displays various information.
The storage unit H14 is a storage device that stores data and various programs for executing various functions of the heavy equipment information server 10 and the support device 20. Examples of the storage unit H14 include ROM, RAM, hard disk, and the like.

The processor H15 controls each process in the heavy equipment information server 10 and the support device 20 using programs and data stored in the storage unit H14. Examples of the processor H15 include a CPU, an MPU, and the like. This processor H15 expands a program stored in a ROM or the like into a RAM and executes various processes for each processing.

The processor H15 is not limited to performing software processing for all processes that it executes. For example, the processor H15 may include a dedicated hardware circuit (for example, an application-specific integrated circuit: ASIC) that performs hardware processing for at least part of the processing that it executes. That is, the processor H15 is [1] one or more processors that operate according to a computer program (software), [2] one or more dedicated hardware circuits that execute at least some of various processes, or [2] one or more dedicated hardware circuits that execute at least some of various processes. 3] Can be configured as a circuit including a combination thereof. A processor includes a CPU and memory, such as RAM and ROM, where the memory stores program codes or instructions configured to cause the CPU to perform processing. Memory or computer-readable media includes any available media that can be accessed by a general purpose or special purpose computer.

(System configuration)
Next, each function of the work support system will be explained using FIG.
The heavy equipment information server 10 is a computer system that provides information on various cranes from heavy equipment manufacturers and the like. This heavy equipment information server 10 records the manufacturer (manufacturing company of heavy equipment), type (type of heavy equipment), model, dimensions/weight, main specifications, and crane load rating table. Dimensions and weight include information on overall length, chassis length, overall width, overall height, maximum outrigger extension, total weight, etc. Main specifications include crane capacity, maximum working radius, minimum working radius, maximum lifting height, boom length/type, boom extension speed, swing angle/speed, boom raising speed, hook hoisting speed, wire rope specifications, etc. . The crane load rating table records the working radius and rated load for the boom length. In addition, in the crane rated load table, when the working radius is large, the lift height and boom angle become low, and the rated load becomes small.

The support device 20 is a computer system that supports crane work in BIM. This support device 20 includes a control section 21 and a storage section 22.
The control unit 21 performs three-dimensional CAD processing in BIM, which will be described later. For this purpose, a BIM application running on the operating system 211 functions as a BIM execution unit 212 . Furthermore, it functions as a crane processing unit 213 by executing an add-on of a BIM application. Further, the control unit 21 functions as a crane registration unit 214.

The operating system 211 is a basic application for operating the support device 20.
The BIM execution unit 212 realizes three-dimensional CAD (computer-aided design) by arranging a three-dimensional model (object) in a virtual three-dimensional space using BIM technology. Each three-dimensional model holds various information regarding architecture as attributes.

The crane processing unit 213 executes a process of arranging a crane model in a virtual three-dimensional space. Further, the crane processing unit 213 executes a process of determining whether or not lifting work on a building member is possible.

The crane registration unit 214 executes processing for registering and searching crane information. For this reason, the crane registration unit 214 includes a registration form and a search form. The registration form is used when recording crane information in the storage unit 22. Further, the search form is used when searching for crane information in the storage unit 22.

As shown in FIG. 3, information regarding the crane type and crane model is recorded in the template information 221. This template information 221 is registered when a crane model is created.

The crane type is an identifier for specifying the type of crane used in BIM. In this embodiment, "rough terrain crane" and "crawler crane" are used as crane types.

The crane model is a three-dimensional model (lifting device model) that schematically represents the shape of the crane of the crane type. This crane model holds instance properties. This instance property holds information regarding the boom angle, for example.

For example, FIG. 4 shows a schematic diagram of a rough terrain crane model 601. FIG. 4(a) is a top view, and FIG. 4(b) is a side view. The shape of the rough terrain crane model 601 is determined by the following dimensions: overall width W1, overall height H1, body length/front L1, body length/rear L2, swivel base/front L4, and swivel base/rear L5. When the dimensions of the cranes of each heavy equipment manufacturer are set, the sizes of the main body and outriggers of the rough terrain crane model 601 are adjusted according to the dimensions.

As shown in FIG. 5, the crane information 222 records summary information of each crane. This crane information 222 includes basic information 222a, structure information 222b, and load rating table 222c.

The basic information 222a records information regarding the crane type, manufacturer, model, base, and vendor.
The crane type information is an identifier for specifying the type of crane used in BIM.

The manufacturer information is information for identifying the crane manufacturing company (heavy equipment manufacturer).
The model information is information for specifying the model of this crane.
The base information is information for specifying the main branch that uses this crane. By using this base information, it can be used as a key to narrow down the cranes to be used at the base.
Vendor information is information for identifying the vendor that provides this crane.

The structure information 222b includes size information regarding the overall width, overall height, vehicle body length/front, vehicle body length/rear, swivel base/front, and swivel base/rear shown in FIG. 4. By using this structural information 222b, it is possible to arrange a crane model according to the scale in the three-dimensional space of BIM. Note that the three-dimensional shape of the crane model can be changed according to the user's size instructions.

The rated load table 222c records information regarding the boom length, working radius, and rated load.
The boom length information is information regarding the length of the boom of the crane. In the rated load table 222c, a plurality of boom lengths from the shortest to the longest are set.

The working radius information is the radius of a working circle determined from the turning center of the crane according to the boom length and boom angle. This working circle makes it possible to specify the range of members that can be lifted by the boom.
The rated load is the weight that can be lifted at each boom length (working radius). This rated load includes the weight of the member to be lifted and the weight of the hook.

As shown in FIG. 6, the BIM information 223 records design information created in BIM. This BIM information 223 is recorded when a building is designed using three-dimensional CAD. The BIM information 223 includes project information, element models, layout information, and attribute information.

The project information includes information regarding the name of the construction site, longitude/latitude, direction of the construction site, etc.
The element model is information regarding a three-dimensional model (object) of each architectural element (member) used at a construction site.

The placement information includes information regarding the coordinates at which each element model is placed.
The attribute information is attribute information of this architectural element. This attribute information includes information regarding specifications (standards, dimensions, area, volume, material, price, etc.).

(Work support processing)
The work support processing will be explained using FIGS. 7 to 14.
First, the control unit 21 of the support device 20 executes crane information input/confirmation processing (step S1-1). Specifically, when acquiring crane information, the user accesses the heavy machinery information server 10 using the support device 20. Then, the support device 20 acquires crane information of each manufacturer. In this case, the user creates a spreadsheet in which basic information, structure information, and rated load information of the acquired crane information are recorded. Next, in response to the user's instructions, the support device 20 uses the crane registration unit 214 to output the registration form to the display device H13. Using this registration form, the support device 20 imports the information in the spreadsheet table and registers it in the storage unit 22 as crane information 222. Furthermore, when searching for a crane to be used on the support device 20, a search form is output to the display device H13. By setting search keys such as crane type, manufacturer, model, base, vendor, etc. in this search form, crane information can be searched and confirmed in the storage unit 22.

Next, the control unit 21 of the support device 20 executes design information registration processing (step S1-2). Specifically, the BIM execution unit 212 of the control unit 21 configures a building by arranging a three-dimensional model of the site and each architectural element on the CAD screen. In this case, when the standard, dimensions, and material of the architectural element are selected, the BIM execution unit 212 calculates the area and volume of the architectural element and sets it as attribute information (property) of the architectural element model. Then, the BIM execution unit 212 records the created BIM information 223 in the storage unit 22.

Next, the control unit 21 of the support device 20 executes a crane placement process (step S1-3). Specifically, when confirming crane work, the crane is placed on the CAD screen. For example, assume that rough terrain cranes and crawler cranes are installed.

In this case, as shown in FIG. 8, the BIM execution unit 212 of the control unit 21 displays a site model 500 and a building model 510 on the CAD screen. Then, the BIM execution unit 212 places the rough terrain crane model 611 and the crawler crane model 612 recorded in the storage unit 22 at the positions instructed by the user.

Next, the control unit 21 of the support device 20 executes property setting processing (step S1-4). Specifically, the BIM execution unit 212 of the control unit 21 starts the crane processing unit 213. In this case, the crane processing unit 213 outputs a reading screen. On this reading screen, the object to be read (spreadsheet table or storage unit 22) can be specified. When a reading target is specified on the reading screen, the crane processing unit 213 associates and interlocks the type property of the crane model with the crane information of the reading target.

Next, the control unit 21 of the support device 20 executes a crane selection process (step S1-5). Specifically, when a crane model to be used is selected on the CAD screen, the crane processing unit 213 outputs a heavy equipment assist screen to the display device H13. This heavy equipment assist screen is provided with input fields for base, vendor, and machine type. When the model is set on the heavy equipment assist screen, the crane processing unit 213 calls up the crane information linked in the type property and acquires the main specifications. Then, the BIM execution unit 212 resizes the crane model according to the scale of the three-dimensional space according to the main specifications.

As shown in FIG. 9, when a rough terrain crane model 601 is selected, the size of the model is changed based on the structural information. In this case, the maximum overhang length of the outrigger length is also changed in proportion to the overall size. Note that the outrigger length can also be changed according to the user's instructions.
Further, as shown in FIG. 10, when the crawler crane model 602 is selected, the size of the model is changed based on the structural information.

Next, the control unit 21 of the support device 20 executes a load rating table reading process (step S1-6). Specifically, the crane processing unit 213 of the control unit 21 acquires the rated load table of the specified model from the crane information 222 that is linked and linked in the type property.

Next, the control unit 21 of the support device 20 executes member selection processing (step S1-7). Specifically, the user specifies the member to be lifted by the crane on the building model 510 on the CAD screen. In this case, the BIM execution unit 212 of the control unit 21 acquires the BIM information 223 of the specified member.

Next, the control unit 21 of the support device 20 executes weight identification processing (step S1-8). Specifically, the BIM execution unit 212 of the control unit 21 specifies the specific gravity of the structural material based on the material of the BIM information 223. Next, the BIM execution unit 212 calculates the weight of the designated member by multiplying the volume and specific gravity. Then, the crane processing unit 213 acquires the weight calculated by the BIM execution unit 212.

Next, the control unit 21 of the support device 20 executes a center of gravity specifying process (step S1-9). Specifically, the BIM execution unit 212 of the control unit 21 specifies the center of gravity position of the member based on the shape of the element model. Then, the crane processing unit 213 acquires the center of gravity position calculated by the BIM execution unit 212.

Next, the control unit 21 of the support device 20 executes boom extension/contraction processing (step S1-10). Specifically, the crane processing unit 213 of the control unit 21 extends and contracts the boom so that the hook at the tip of the boom is placed above the identified center of gravity position. In this case, an interference check is performed to ensure that the boom model does not come into contact with the building model at the boom angle. If there is interference between the boom and the building, an alarm is output. In this case, for example, the boom angle is changed so as not to interfere. Next, the crane processing unit 213 specifies the working radius according to the expanded and contracted boom length.

As shown in FIG. 11, when the member 511 is selected when the rough terrain crane model 611 is selected, the boom is extended and retracted so that the hook is placed above the center of gravity of the member 511. In this case, the member 511 is located close to the rough terrain crane model 611, so the boom is relatively short.

As shown in FIG. 12, when member 512 is selected when rough terrain crane model 611 is selected, the boom is extended and retracted so that the hook is placed above the center of gravity of member 512. In this case, member 512 is located far from rough terrain crane model 611, so the boom is extended relatively long.

As shown in FIG. 13, when the member 513 is selected when the crawler crane model 612 is selected, the boom is extended and retracted so that the hook is placed above the center of gravity of the member 513. In this case, member 513 is located close to crawler crane model 612, so the boom is relatively short.

As shown in FIG. 14, when the member 514 is selected when the crawler crane model 612 is selected, the boom is extended and retracted so that the hook is placed above the center of gravity of the member 514. In this case, member 514 is located far from crawler crane model 612 so that the boom is extended relatively long.

Next, the control unit 21 of the support device 20 executes rated load identification processing (step S1-11). Specifically, the crane processing unit 213 of the control unit 21 acquires the rated load corresponding to the working radius from the rated load table of the crane information 222.

Next, the control unit 21 of the support device 20 executes a determination process (step S1-12). Specifically, if the calculated working radius is not listed in the rated load table, the crane processing unit 213 of the control unit 21 determines that it is unreachable (lifting is not possible) and displays an unreachable message on the display device H13. Output to. On the other hand, if the calculated working radius is listed in the rated load table, it is determined that it is reachable. If it can be reached, the crane processing unit 213 compares the rated load obtained from the rated load table and the weight of the member. If the weight of the member is greater than the rated load, it is determined that the load is over (lifting is not possible), and a load over message is output to the display device H13. On the other hand, if the weight of the member is less than the rated load, it is determined that it can be hung (lifted), and a hanging possible message is output to the display device H13.

According to this embodiment, the following effects can be obtained.
(1) In this embodiment, the crane information 222 records summary information of each crane. Thereby, the crane model can be accurately placed in the BIM space of the construction site.

(2) In this embodiment, the control unit 21 of the support device 20 executes property setting processing (step S1-4). Thereby, the structural information and rated load table set in the spreadsheet can be linked and linked with the properties of the crane model.

(3) In the present embodiment, the control unit 21 of the support device 20 executes a boom extension/contraction process (step S1-10) and a determination process (step S1-12). Thereby, the boom of the crane model can be extended or contracted depending on the arrangement of the crane model and the position of the center of gravity of the members. Furthermore, the validity of the boom angle of the boom can be determined by the interference check. The boom of the crane model can then be used to determine whether the member is reachable.

(4) In the present embodiment, the control unit 21 of the support device 20 executes a load rating identification process (step S1-11) and a determination process (step S1-12). This makes it possible to check whether lifting is possible with respect to the rated load according to the working radius.

This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- In the above embodiment, the control unit 21 of the support device 20 executes crane information input/confirmation processing (step S1-1). In this case, the user creates a spreadsheet in which basic information, structure information, and rated load information of the acquired crane information are recorded. Here, the support device 20 may directly access the external heavy equipment information server 10 to acquire crane information and register it in the storage unit 22 as the crane information 222.

- In the above embodiment, the control unit 21 of the support device 20 executes the boom extension/contraction process (step S1-10). Here, the control unit 21 of the support device 20 may adjust the boom angle. In this case, for example, the lowest angle that does not interfere with the building model and allows lifting work is used as the boom angle.

- In the above embodiment, the control unit 21 of the support device 20 executes the determination process (step S1-12). Here, it is determined whether the boom has arrived and whether or not it can be lifted. Judgment items are not limited to these. For example, the availability of work space for the crane may be determined according to the sizes of the site model and the building model. In this case, the distance between the crane model and the threshold boundary is calculated when the swivel base turns. If this distance is less than a predetermined position, an alarm message is output for lifting operations using this distance. Furthermore, the control unit 21 of the support device 20 may use the structure information 222b to select a model that is capable of placement and work, depending on the sizes of the site model and the building model.

- In the above embodiment, the BIM information 223 is recorded when a building is designed using three-dimensional CAD. The BIM information 223 includes project information, element models, layout information, and attribute information. Here, the BIM information 223 may include process information. In this case, the control unit 21 of the support device 20 specifies the step of arranging the member, and arranges other architectural elements placed up to this step in the three-dimensional space. The control unit 21 of the support device 20 then checks for interference between other building elements and the boom of the crane.

- In the above embodiment, a rough terrain crane or a crawler crane is used as the lifting device. Lifting devices are not limited to these. For example, a tower crane may be used.

DESCRIPTION OF SYMBOLS 10... Heavy equipment information server, 20... Support device, 21... Control unit, 211... Operation system, 212... BIM execution unit, 213... Crane processing unit, 214... Crane registration unit, 22... Storage unit, 221... Template information, 222 ...Crane information, 223...BIM information

Claims (4)

A work support system comprising a control unit that executes a BIM application that places a structural material model in a three-dimensional space,
The control section,
placing a lifting device model in the three-dimensional space,
When a structural material model to be lifted is specified, the center of gravity of the structural material model is specified in the three-dimensional space, and a hook at the tip of the boom of the lifting device model is placed above the specified center of gravity. According to the working radius of the center of gravity position and the arrangement of the lifting equipment model, determine whether lifting is possible using the rated load table of the lifting equipment model. A work support system characterized by making a determination. The control section,
If the model of the lifting device model is obtained, specify the size of the model,
The work support system according to claim 1, wherein the shape of the lifting device model is changed depending on the size. A method for providing work support using a work support system equipped with a control unit that executes a BIM application that places a structural material model in a three-dimensional space, the method comprising:
The control section,
placing a lifting device model in the three-dimensional space,
When a structural material model to be lifted is specified, the center of gravity of the structural material model is specified in the three-dimensional space, and a hook at the tip of the boom of the lifting device model is placed above the specified center of gravity. According to the working radius of the center of gravity position and the arrangement of the lifting equipment model, determine whether lifting is possible using the rated load table of the lifting equipment model. A work support method characterized by making a determination. A program for providing work support using a work support system equipped with a control unit that executes a BIM application that places a structural material model in a three-dimensional space,
The control section,
placing a lifting device model in the three-dimensional space,
When a structural material model to be lifted is specified, the center of gravity of the structural material model is specified in the three-dimensional space, and a hook at the tip of the boom of the lifting device model is placed above the specified center of gravity. According to the working radius of the center of gravity position and the arrangement of the lifting equipment model, determine whether lifting is possible using the rated load table of the lifting equipment model. A work support program characterized by functioning as a means for making a determination.

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