Shape measurement method, shape measurement device, measurement method of segment, measurement system of segment, measurement terminal, manufacturing method of segment, and quality control method of segment

Abstract

To simply execute an assembling confirmation on segments configuring an annular body.SOLUTION: A shape measurement method analyzes interference level between an end surface where segments are adjacent to each other and a joint part with respect to the segments constructing an annular body. The shape measurement method includes an assembling completion state setting step to set an assembling completion state that segment assembling is completed on the basis of segment shape data, and an interference analysis step to analyze the interference level between the end surface where the segments are adjacent to each other and the joint part in the assembling completion state.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a shape measurement method, a shape measurement device, a segment measurement method, a segment measurement system, a measurement terminal, a segment manufacturing method, and a segment quality control method. [Background technology]

[0002] Conventionally, the construction of a ring-shaped structure using segments such as a shield tunnel is carried out by manufacturing segments (divided components) according to the shape of the shield tunnel at a factory, transporting them to the construction site, and then assembling them by connecting joints in the circumferential and axial directions using a shield machine or the like. Patent Document 1 discloses segments for shield tunnels. There are various methods for connecting joints, but Patent Document 1 describes a connection method in which segments are assembled by connecting insertion-type joints to construct a ring-shaped structure as a shield tunnel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-177272 Summary of the Invention [Problem to be solved by the invention]

[0004] Now, annular structures made up of segments are assembled by connecting the joints of the segments along the circumferential and axial directions of the annular structure. In this way, an annular structure such as a shield tunnel is constructed using multiple segments. In order to confirm the accuracy of the manufacturing of the annular structure by combining segments, assembly confirmation is carried out at the factory where the segments were manufactured before they are used.

[0005] However, depending on the conditions of the annular body and segments to be assembled, it can be difficult to verify the assembly of the annular body using the segments. In particular, annular bodies are likely to be large in diameter and long, and when the segments are made of heavy materials such as concrete or steel, verifying the assembly becomes even more difficult. As such, verifying the assembly poses many challenges that must be overcome, such as the large number of segments, effort, space, large cranes, and ensuring safety, making it extremely difficult to thoroughly verify the assembly with limited space and personnel in a factory or other facility.

[0006] On the other hand, when assembling segments at the installation site of the ring body, there is a possibility that the segments to be assembled may interfere with each other, making it impossible to arrange them into a ring body, or that the segments may not be able to be connected due to misalignment of the connection positions of the joints. Therefore, there has been a demand for a technology that can easily measure whether the individual segments that make up the ring body can be assembled into a ring body before use on site, regardless of the condition of the ring body or segments.

[0007] The present invention has been made in consideration of the above, and its object is to provide a shape measurement method, a shape measurement device, a segment measurement method, a segment measurement system, a measurement terminal, a segment manufacturing method, and a segment quality control method that enable easy confirmation of segment assembly. [Means for solving the problem]

[0008] (1) In order to solve the above-mentioned problems and achieve the above-mentioned object, a shape measurement method according to one embodiment of the present invention is a shape measurement method for analyzing the interference level between adjacent end faces and joints of segments that constitute a ring-shaped body, and includes an assembly completion state setting step for setting an assembly completion state in which assembly of the segments is complete based on data of the segment shapes of the segments, and an interference analysis step for analyzing the interference level between adjacent end faces and joints of the segments in the assembly completion state.

[0009] (2) A shape measurement method according to one aspect of the present invention, in the invention described in (1), further includes at least one of the steps of: determining whether the segment passes or fails based on the interference level measured in the interference analysis step; and assigning information about the interference part to a location determined to be an interference part based on the interference level measured in the interference analysis step.

[0010] (3) A segment measurement method according to one embodiment of the present invention includes a shape measurement step of measuring the segment shapes of segments that constitute a ring-shaped body, and a shape measurement step of analyzing the interference level between the segments based on data of the segment shapes measured in the shape measurement step using the shape measurement method described in (1) or (2).

[0011] (4) The segment manufacturing method of the present invention is a segment manufacturing method for manufacturing segments that construct a ring-shaped body, and includes a segment manufacturing process for manufacturing segments, and a segment measurement process for performing the segment measurement method described in (3) on the segments produced by the segment manufacturing process.

[0012] (5) A segment quality control method according to one embodiment of the present invention is a segment quality control method for controlling the quality of segments that constitute a ring-shaped body, and includes a segment manufacturing process for manufacturing the segments, a segment measurement process for measuring the segment shape of the segments created by the segment manufacturing process using the segment measurement method described in (3), and a quality control process for controlling the quality of the created segments using the results obtained from the segment measurement process.

[0013] (6) A shape measuring device according to one embodiment of the present invention is a shape measuring device that includes a control unit that analyzes the interference level between adjacent end faces and joints of segments that form a ring-shaped body, and the control unit executes an assembly completion state setting process that sets an assembly completion state in which assembly of the segments is complete based on data on the segment shapes of each of the segments, and an interference analysis process that analyzes the interference level between adjacent end faces and joints of the segments in the assembly completion state.

[0014] (7) A shape measuring device according to one embodiment of the present invention, in the invention described in (6), further includes a communication unit, and the communication unit executes, via the control unit, at least one of a process for acquiring data on the segment shape of each of the segments and a process for outputting information on the interference level obtained by the interference analysis process.

[0015] (8) A segment measurement system according to one embodiment of the present invention comprises a measurement unit configured to measure each of the segment shapes of the segments that form a ring body, and a shape measurement device described in (6) or (7) that analyzes the interference level between the segments based on data on the segment shapes measured by the measurement unit.

[0016] (9) A measurement terminal according to one embodiment of the present invention is a measurement terminal equipped with a control unit capable of analyzing the interference level between adjacent end faces and joints of segments that form a ring body, and is equipped with: a measurement unit that measures the segment shapes of each of the segments using the control unit; a communication unit that executes at least one of an output process that outputs the measured segment shapes as data to a shape measuring device described in (6) or (7) using the control unit, and an acquisition process that acquires information regarding the interference level for each segment from the shape measuring device; and an output unit that is capable of outputting the information acquired by the control unit in a predetermined format.

[0017] (10) In one aspect of the present invention, in the measurement terminal according to the invention described in (9), the control unit executes at least one of the following processes: a process for determining whether the segment is pass or fail based on the acquired information regarding the interference level and a predetermined criterion; and an interference information assignment process for assigning information about the interference part to a location determined to be an interference part based on the acquired information regarding the interference level and a predetermined criterion.

[0018] (11) A segment measurement system according to the present invention comprises a measurement terminal according to (9) and a shape measurement device according to (6) or (7) that analyzes the interference level for each segment based on data on the segment shape measured by the measurement terminal.

[0019] (12) A segment quality control method according to one aspect of the present invention is a segment quality control method for controlling the quality of segments that constitute a ring body, and controls the quality of the segments using information about the interference level obtained from an interference analysis process executed by the control unit of the shape measurement device described in (6) or (7). [Effects of the Invention]

[0020] The shape measurement method, shape measurement device, segment measurement method, segment measurement system, measurement terminal, segment manufacturing method, and segment quality control method according to the present invention make it possible to more easily confirm the assembly of segments. [Brief explanation of the drawings]

[0021] [Figure 1A] FIG. 1A is a diagram showing a segment to be measured in a segment measurement system according to an embodiment of the present invention. [Figure 1B] FIG. 1B is a view taken along the arrow B when the segments shown in FIG. 1A are connected. [Figure 1C] FIG. 1C is a view taken along arrow C when the segments shown in FIG. 1A are connected. [Figure 1D]FIG. 1D is a view taken along arrow D when the segments shown in FIG. 1A are connected. [Figure 1E] FIG. 1E is a view taken along arrow E when the segments shown in FIG. 1A are connected. [Figure 2] FIG. 2 is a diagram showing a completed assembly state of a segment to be measured in the segment measurement system according to one embodiment of the present invention. [Figure 3] FIG. 3 is a block diagram showing a segment measurement system according to a first example of an embodiment of the present invention. [Figure 4] FIG. 4 is a block diagram showing a segment measurement system according to a second example of an embodiment of the present invention. [Figure 5] FIG. 5 is a flowchart illustrating a method for measuring a segment according to an embodiment of the present invention. [Figure 6] FIG. 6 is a flowchart illustrating a shape measurement process according to an embodiment of the present invention. [Figure 7A] FIG. 7A is a diagram for explaining the central axis (reference point) on the segment side used when assembling the segments according to one embodiment of the present invention. [Figure 7B] FIG. 7B is a diagram for explaining the central axis (reference point) on the annular body side used when assembling segments according to one embodiment of the present invention. [Figure 8] FIG. 8 is an enlarged cross-sectional view showing assembled portions of a segment according to one embodiment of the present invention. [Figure 9] FIG. 9 is an enlarged cross-sectional view showing an interference portion in an assembly portion of a segment according to one embodiment of the present invention. [Figure 10] FIG. 10 is an enlarged cross-sectional view showing a portion where the interference level of the joint portion is high in a segment according to one embodiment of the present invention. [Figure 11] FIG. 11 is an enlarged cross-sectional view showing a portion where the interference level of the joint portion is high in a segment according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all drawings of the following embodiments, the same or corresponding parts are designated by the same reference numerals. Furthermore, the present invention is not limited to the embodiments described below.

[0023] (Embodiment) First, we will explain the segments that are the target of measurement by the segment measurement system of this embodiment. Fig. 1A is a diagram showing the segments that are the target of measurement by the segment measurement system of this embodiment. Figs. 1B, 1C, 1D, and 1E are views from arrows B, C, D, and E, respectively, when the segments shown in Fig. 1A are connected. Fig. 2 is a diagram showing the completed assembly state of the segments that are the target of measurement by the segment measurement system of this embodiment.

[0024] In this specification, the term "segment" refers to an individual component used to construct a tunnel-shaped ring-shaped structure. The tunnel shape is not limited to a circular shape but may be rectangular, elliptical, or a complex shape that combines shapes. The individual segments that make up the tunnel-shaped ring-shaped structure also have various shapes. While a tunnel generally has a horizontal axis, it may also have an oblique or vertical axis. Furthermore, the segments may be made of various materials, such as concrete, reinforced concrete, steel, or a composite structure combining steel and concrete. The material of the segments is not limited to a specific material. Furthermore, various connection methods, such as an insert type or a bolt type, can be used for connecting circumferential and axial joints.

[0025] (Segments to be measured) 1A, a segment 10 according to this embodiment is composed of a main body 11 and joints 12. The joints 12 are classified into circumferential joints 12a, which are joints along the circumferential direction of the ring of the segment 10, and axial joints 12b, which are joints along the axial direction of the ring. In other words, a ring-shaped member is formed by connecting multiple segments 10 along the circumferential direction using the circumferential joints 12a.

[0026] As shown in Fig. 1B, when the joint portion 12 is viewed from the arrow B in Fig. 1A, that is, when the joint portion 12 is viewed from the inner circumferential side of an annular body described later with respect to the main body portion 11 of the segment 10, a circumferential joint 12a is formed to be used when the main body portion 11 is connected in the circumferential direction (left-right direction in Fig. 1B). Also, as shown in Fig. 1C, when the joint portion 12 is viewed from the arrow C in Fig. 1A, that is, when the joint portion 12 is viewed from the side along the axial direction of an annular body described later with respect to the main body portion 11 of the segment 10, a circumferential joint 12a is formed to be used when the main body portion 11 is connected in the circumferential direction (left-right direction in Fig. 1C).

[0027] Similarly, as shown in Fig. 1D, when the joint portion 12 is viewed from the arrow D shown in Fig. 1A, that is, when the joint portion 12 is viewed from the inner peripheral side of the annular body described later with respect to the main body portion 11 of the segment 10, an axial joint 12b is formed to be used when the main body portion 11 is connected in the axial direction (the up-down direction in Fig. 1D). Also, as shown in Fig. 1E, when the joint portion 12 is viewed from the arrow E shown in Fig. 1A, that is, when the joint portion 12 is viewed from the side along the circumferential direction of the annular body described later with respect to the main body portion 11 of the segment 10, an axial joint 12b is formed to be used when the main body portion 11 is connected.

[0028] Various connection methods can be adopted for the joint portion 12. A specific example of a connection method for the joint portion 12 is a connection method in which a protruding pin (PIN, male type) is provided on one side and a box-shaped box (BOX, female type) is formed to accommodate the pin on the corresponding side. Joints that can be used with this connection method include joints that store and secure the pin in a box, and joints in which holes into which a connecting member such as a bolt can be inserted are formed in advance, and the holes of the segments to be assembled are aligned and secured with a connecting member such as a bolt.

[0029] As shown in FIG. 2, an annular body 13 consisting of multiple segments 10 is constructed by connecting and assembling the joint portions 12 of the segments 10 shown in FIG. 1A in the circumferential and axial directions. The annular body 13 can be various shapes, such as a cylindrical or polygonal tube, and is configured by joining and arranging multiple segments 10 around a predetermined central axis 14. The central axis 14 is not necessarily limited to a straight line but can also be a curved or bent line. Furthermore, the cylindrical shape of the annular body 13 does not have to be circular; depending on the application, it can be rectangular, elliptical, or a complex shape combining various shapes, as long as the segments are connected circumferentially to form a cylindrical shape. Therefore, various shapes can be used for the segments 10 corresponding to the cylindrical shape of the annular body 13, and they are not limited to the shape shown in FIG. 1.

[0030] Furthermore, the length of the annular body 13 along the axial direction varies, and the configuration of the annular body 13 is not limited to this length. In the example shown in FIG. 2 , ring-shaped members formed by connecting segments 10 into a ring shape with circumferential joints 12a are connected together in the axial direction. At this time, adjacent ring-shaped members are rotated around the central axis 14, in other words, the circumferential joints 12a are rotated circumferentially around the central axis 14 so that they are offset from each other. This results in a staggered assembly in which the ring members are arranged in a staggered manner so that substantially identical ring members are arranged alternately along the axial direction. Various methods can also be used to assemble the annular body 13. It is also possible to assemble adjacent ring-shaped members in a similar arrangement, i.e., by using a tangential joint in which the circumferential joints 12a are continuous in the tunnel axial direction.

[0031] The material of the segments 10 may be, for example, steel, metal materials other than steel, concrete, resin, or a combination of multiple materials, but is not limited to these. The material of the segments 10 can be selected depending on the intended use and application conditions. This embodiment is particularly effective for segments 10 in which the annular bodies 13 are large in diameter, long, or heavy, making it difficult to check the assembly before shipping from the factory.

[0032] The annular body 13 mainly constitutes a structural body. An example of the structural body is a tunnel. Examples of the tunnel include a horizontal hole such as a shield tunnel in which the central axis 14 is arranged horizontally or obliquely, and a vertical hole such as a shaft in which the central axis 14 is arranged vertically.

[0033] (First example of embodiment) Next, a segment measurement system according to a first embodiment of the present invention will be described below. Fig. 3 is a block diagram showing the segment measurement system according to the first embodiment.

[0034] 3, the segment measurement system 1 is configured to include a shape measuring device 20 and a measurement unit 35. Furthermore, the shape measuring device 20 is connected to a segment processing device 40. The segment measurement system 1 may also adopt a configuration including the shape measuring device 20, the measurement unit 35, and the segment processing device 40. Furthermore, the segment measurement system 1 according to one embodiment is designed to use the shape measuring device 20 in a fixed position, but the measurement unit 35 and the shape measuring device 20 can be located close to each other or at a long distance.

[0035] (shape measuring device) The shape measuring device 20 includes a control unit 21, a storage unit 22, and an input / output unit 23. It is also possible to not provide the input / output unit 23. The shape measuring device 20 can use a known computer, server, laptop computer, mobile terminal, tablet, smartphone, or a virtual device on a network such as a cloud.

[0036] The control unit 31 as a control means specifically includes a processor such as a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or an FPGA (Field-Programmable Gate Array) having hardware, and a main memory unit such as a RAM (Random Access Memory) or a ROM (Read Only Memory) (none of which are shown).

[0037] The storage unit 22, which serves as a storage means, is physically composed of a storage medium selected from the group consisting of volatile memory such as RAM, non-volatile memory such as ROM, erasable programmable read-only memory (EPROM), hard disk drive (HDD), solid state drive (SSD), and removable media. Removable media include, for example, a universal serial bus (USB) memory or a disc storage medium such as a compact disc (CD), a digital versatile disc (DVD), or a Blu-ray disc (BD). The storage unit 22 may also be configured using a computer-readable storage medium such as an externally attachable memory card. The storage unit 22 can store an operating system (OS), various programs, various tables, various databases, and the like for executing the operations of the shape measurement device 20. The various programs include learning models and neural networks. These various programs can also be recorded on computer-readable storage media such as a hard disk, flash memory, CD-ROM, DVD-ROM, and flexible disk for widespread distribution.

[0038] The storage unit 22 stores a shape database 221 and a segment type database 222. The segment type database 222 stores, as basic information, various pieces of information (segment type information) about the segments 10 that make up the annular body 13 in a searchable manner. The segment type information includes information such as the identification ID of the annular body 13, the shapes and specifications of the segments 10 and the joints 12, such as the dimensions of the segments 10 and the joints 12, and other information. The shape database 221 stores, in a searchable manner, information about the clearance between any main body 11c and the adjacent main body 11d based on the segment type information, and information about measurement results (hereinafter, referred to as shape information) about the interference level between any joint 12c and the joint 12d to be connected thereto, measured by the measuring unit 35 (described later). The shape information includes, in addition to information about the measurement results of the interference level, various pieces of information related to interference, such as flag information as information about the interfering portion that defines the interference location and pass / fail information (pass / fail) for the segment 10.

[0039] The shape calculation unit 211 of the control unit 21 is configured to be able to store the shape of the segment 10 measured by the measurement unit 35 as digital data in a shape database 221 of the storage unit 22. The storage unit 22 may be provided in a housing different from that of the control unit 21, and may use an external storage device or a virtual storage device such as a cloud on a network.

[0040] In this embodiment, the control unit 21 loads a program stored in the storage unit 22 into a working area of ​​the main storage unit, executes the program, and controls each component unit through the execution of the program, thereby realizing functions that meet a predetermined purpose. Specifically, the control unit 21 can realize the functions of a shape calculation unit 211 and a determination unit 212 by executing the program.

[0041] The input / output unit 23 is composed of, for example, a touch panel display, a speaker / microphone, buttons, switches, a jog dial, etc. The input / output unit 23 as an output unit is configured to notify the outside of predetermined information by displaying characters, figures, etc. on the screen of a display such as a liquid crystal display, an organic EL display, or a plasma display, or by outputting sound from a speaker, under the control of the control unit 21. The input / output unit 23 includes a printer that outputs predetermined information by printing it on printing paper, etc. The various information stored in the memory unit 22 can be confirmed, for example, on a display of the input / output unit 23 installed in a predetermined office, etc.

[0042] The input / output unit 23 as an input unit may be configured, for example, from a keyboard, a touch panel keyboard incorporated inside the input / output unit 23 that detects touch operations on a display panel, a voice input device that enables external communication, a switch, or a jog dial. When the cross-sectional shape of a segment 10 is visually measured using the input / output unit 23 as an output unit, the input / output unit 23 as an input means can input measured values ​​related to the shape as shape information from the input / output unit 23. Furthermore, as will be described in detail later, it is also possible to input from the input / output unit 23 to set or set a flag based on whether or not there is interference between adjacent segments 10. Specifically, the input / output unit 23 may input "0" if there is interference between adjacent segments 10, and "1" if there is no interference.

[0043] (Measurement section) The measurement unit 35 is composed of at least one device, such as a handheld 3D scanner. The 3D scanner may be, for example, a laser irradiation device or an infrared irradiation device. Because handheld 3D scanners must be operated while maintaining a focal length (for example, 20 cm to 40 cm) appropriate for the model, it is desirable to secure a space of 50 cm or more around the object to be scanned.

[0044] From the perspective of determining whether the segments 10 can be assembled and fitted, the measurement accuracy of the measurement unit 35 is preferably less than half the desired interference level. Specifically, for example, if the interference level is 1.5 mm, the measurement accuracy is preferably less than (1.5 / 2 = 0.75 mm). The measurement accuracy is set in various ways depending on the size and shape of the segments 10, and is not limited to these values. In particular, since the segments 10 have a three-dimensional shape, blind spots are likely to occur due to the segment parts. Therefore, from the perspective of operability, a handheld measuring device, such as a handheld 3D scanner, is desirable. Note that, typically, high-precision handheld 3D scanners may require markers for shape measurement to be attached to the target object approximately every 10 cm. On the other hand, when the segments 10 are large, a markerless handheld 3D scanner, which does not require markers for shape measurement, is desirable from the perspective of efficiency.

[0045] Specifically, the sensor constituting the measurement unit 35 can measure the distance from its installation position to an object, for example, the top surface of the segment 10, by irradiating and reflecting a predetermined light, such as a laser beam. The measurement unit 35 can perform so-called sensing, which measures the distance from the measurement position to the surface of the object in association with two-dimensional position information. Sensing includes various measurements performed by the measurement unit 35. Examples of two-dimensional position information that can be used include coordinates (x, y) on the xy plane, coordinates (r, θ) at a distance r and a rotation angle θ, and the like. Based on distance information corresponding to the two-dimensional position information, the segment shape of the surface of the segment 10 can be measured three-dimensionally.

[0046] Furthermore, when selecting equipment for the measurement unit 35, the higher the resolution, the better. In this case, the resolution should be such that the segment shapes, which affect the interference level used to determine whether the segments 10 can be assembled, can be accurately reproduced. In this embodiment, the resolution should be approximately 1 mm or less, so that local irregularities are unlikely to occur in the shape of the segments 10, but is not limited to this value. Furthermore, since the determination of whether the segments 10 can be assembled is made by combining them on the scanned data, it is desirable to make it easier to identify the segments if they have similar shapes by providing markers or markings with shapes that can be recognized by scanning.

[0047] The measurement unit 35 outputs the measurement values ​​of the segment shape as data of the segment shape measured by sensing to the shape measuring device 20. Note that the data of the segment shape includes not only measurement data including the measurement values ​​but also design data including design information. The shape calculation unit 211 in the control unit 21 of the shape measuring device 20 stores the acquired measurement values ​​in the shape database 221 of the storage unit 22.

[0048] (Segment processing equipment) The segment processing device 40 is a device used in an adjustment process for the shape of the segment 10. The segment processing device 40 includes a control unit 41, a memory unit 42, an input / output unit 43, and a segment processing unit 45. The control unit 41, the memory unit 42, and the input / output unit 43 are configured functionally and physically similarly to the control unit 21, the memory unit 22, and the input / output unit 23, respectively. The segment processing device 40 is connected to the shape measuring device 20.

[0049] The control unit 41 loads a program stored in the storage unit 42 into a working area of ​​the main storage unit, executes the program, and controls each component unit through the execution of the program, thereby realizing a function that meets a predetermined purpose. Specifically, the control unit 41 can realize the function of a machining control unit 411 by executing the program. The machining control unit 411 is configured to be able to control the segment machining unit 45.

[0050] The shape calculation unit 211 of the shape measuring device 20 reads out shape information from the shape database 221 stored in the memory unit 22 and outputs it to the segment processing device 40. After acquiring the shape information, the segment processing device 40 stores the acquired shape information at least temporarily in the memory unit 42. When an instruction to correct an interfering portion between segments 10 is input from an operator or the like via the input / output unit 43, the processing control unit 411 of the control unit 41 controls the segment processing unit 45 to execute processing to correct the interfering portion based on the acquired shape information. Note that the segment processing device 40 may be configured integrally with the shape measuring device 20. Furthermore, the segment processing device 40 can also manufacture segments 10. As described above, the segment measurement system 1 according to the first example embodiment is configured.

[0051] (Second example of embodiment) Next, a segment measurement system according to a second embodiment of the present invention will be described. Fig. 4 is a block diagram showing the segment measurement system according to the second embodiment. As shown in Fig. 4, the segment measurement system 1A is configured to include a shape measurement device 20 and a measurement terminal 30A that can communicate with each other via a network 2.

[0052] The network 2 is, for example, a public communication network such as the Internet, and is made up of one or a combination of a LAN (Local Area Network), a WAN (Wide Area Network), a telephone communication network such as a mobile phone, a public line, a VPN (Virtual Private Network), a dedicated line, etc. The network 2 is an appropriate combination of wired communication and wireless communication.

[0053] The segment measurement system 1A may further be connected to a segment processing device 40 that can communicate with at least the shape measurement device 20 via the network 2. The segment measurement system 1A may also adopt a configuration including the shape measurement device 20, the measurement terminal 30A, and the segment processing device 40.

[0054] (shape measuring device) The shape measuring device 20A includes a control unit 21, a memory unit 22, an input / output unit 23, and a communication unit 24. The communication unit 24 serving as a communication means is, for example, a LAN (Local Area Network) interface board or a wireless communication circuit for wireless communication. The LAN interface board and the wireless communication circuit are connected to a network 2. The communication unit 24 is connected to the network 2 and communicates with the measurement terminal 30A and the segment processing device 40A. The other configurations are the same as those of the shape measuring device 20 in the embodiment.

[0055] (measurement terminal) The measurement terminal 30A includes a control unit 31, a memory unit 32, an input / output unit 33, a communication unit 34, and a measurement unit 35. The control unit 31, the memory unit 32, the input / output unit 33, and the communication unit 34 have the same physical and functional configurations as the control unit 21, the memory unit 22, the input / output unit 23, and the communication unit 24 described above, respectively.

[0056] Furthermore, the measurement unit 35 in the measurement terminal 30A according to the second example of the embodiment is configured similarly to the measurement unit 35 in the first example of the embodiment. The control unit 31 can realize a function that meets a predetermined purpose by loading a program stored in the storage unit 32 into a working area of ​​the main storage unit and executing the program. Specifically, the control unit 31 can realize the function of a measurement control unit 311 by executing the program. The measurement control unit 311 is configured to be able to control the measurement unit 35.

[0057] (Segment processing equipment) The segment processing device 40A includes a control unit 41, a memory unit 42, an input / output unit 43, a communication unit 44, and a segment processing unit 45. The communication unit 44, which serves as communication means, is physically and functionally configured in the same manner as the communication unit 24 described above, and is connected to the network 2. The communication unit 44 is connected to the network 2 and communicates with at least the shape measuring device 20A. The other configurations are the same as those of the segment processing device 40 in the first embodiment. The above constitutes a segment measurement system 1A according to a second example of an embodiment.

[0058] (One embodiment) (Method of measuring segments) Next, a method for measuring the segment 10 using the segment measurement system 1 according to the first example of the embodiment or the segment measurement system 1A according to the second example configured as above will be described. Fig. 5 is a flowchart showing a method for measuring the segment 10 according to one embodiment.

[0059] (Segment manufacturing process) As shown in Fig. 5, first, in step ST1, a joint manufacturing process is performed by a segment processing device 40. Methods for manufacturing segments include a method of manufacturing each member such as a plate and assembling them by welding, a method of pouring concrete into a formwork, a method of using a 3D printer, and a method of combining the above methods.

[0060] (Method of measuring segments) Here, a segment measurement method according to this embodiment will be described. This embodiment includes a shape measurement step of measuring the shape of the segment after processing, and a shape measurement step of measuring the segment based on the measured shape of the segment. These shape measurement steps and shape measurement steps are performed before the segment 10 is actually used.

[0061] (shape measurement process) That is, after the segments 10 are manufactured in step ST1, the process proceeds to step ST2 to execute a shape measurement process. In the shape measurement process, first, the measurement unit 35 measures the segment shapes of the segments 10 manufactured in step ST1. The measurement unit 35 outputs or transmits (hereinafter referred to as transmission) measurement data of the measured segment shapes to the shape measuring device 20. Here, in the shape measurement process of the segments 10, the measurement of the segment shapes using the measurement unit 35 is performed by, for example, measuring the distance from the measurement unit 35 to the surface of the segment 10.

[0062] Furthermore, in the shape measurement process for the segment 10, the segment shape can be measured by photogrammetry using the acquired images, with multiple images of the segment 10 captured from multiple viewpoints. Specifically, point cloud data is acquired using a handheld 3D scanner constituting the measurement unit 35, and the acquired point cloud data is then polygonized (STL or meshed), and shape measurement and virtual placement are performed using CAD software that performs 3D measurement of the target segment 10. Here, to achieve virtual placement, for example, when grasping the shape in detail, it is preferable to set the vertices of the segment shape as data points.

[0063] From the above, it is possible to improve the accuracy of judgment by setting a judgment standard value that takes into account measurement accuracy, ignoring local contact, frictional resistance, elastic deformation amount, and usage conditions (such as orientation during assembly (vertical, horizontal, or diagonal), and outside temperature). In other words, it is not necessary to use 0 as the standard; for example, a digital clearance of -0.2 mm (a hypothetical interference amount of 0.2 mm) can be used as the standard to judge whether or not the parts are mated. Also, depending on the measurement accuracy, interference may occur even when the clearance is a positive value, so it is desirable to set an appropriate judgment standard. Note that since positive and negative clearances depend on the method of calculation, a negative value can also be used to indicate that clearance exists.

[0064] Furthermore, it is not necessary to measure the entire segment 10; it is sufficient that the measurement unit 35 measures the surfaces necessary for setting the central axis 14 and reference points and for interference detection. In this case, it is possible to shorten the measurement time and reduce the volume of measurement data. Furthermore, when converting the acquired point cloud data into polygons (STL conversion, mesh conversion), points within a predetermined surface error range (for example, 0.01 mm) can be omitted to reduce the data volume.

[0065] (Shape measurement process) Next, proceeding to step ST3, an interference analysis step as part of the shape measurement method will be described. Fig. 6 is a flowchart showing an interference analysis method according to one embodiment. The flowchart shown in Fig. 6 is executed by the shape measurement device 20.

[0066] (Acquisition step) 6, in the shape measurement method according to one embodiment, first, in step ST31 as an acquisition step, the control unit 21 of the shape measurement device 20 acquires measurement data from the measurement unit 35. The measurement data is measurement data related to the shape of the segment 10 measured by the measurement unit 35 in step ST2.

[0067] (Assembly completion state setting step) Next, the process proceeds to step ST32, which is an assembly completion state setting step, and the shape calculation unit 211 of the control unit 21 executes an assembly completion state setting process in which the segments 10 are assembled together based on the acquired measurement data of the shape of the segments 10.

[0068] In this specification, the term "completed assembly state" refers to a state in which the assembly of the segments 10 that make up the annular body 13 is complete, as shown in Figure 2. The completed assembly state here refers to a state in which the positions of the joints 12 are aligned, and the shape of the annular body 13 is achieved, for example, when the reference diameter, such as the outer diameter, is within a tolerance. In the case of a bolt type, it is not necessary to insert the bolt into the hole; it is sufficient if the hole positions are aligned within a tolerance.

[0069] The greatest feature of the present invention is that this assembly completion state is set as the initial position, and measurement of the interference level is started from the assembly completion state. In this embodiment, the assembly completion state is set as the initial position, and shape measurement is performed in the assembly completion state. Normally, when checking assembly using the actual segments 10, the segments 10 are moved to a position where they can be assembled, and the feasibility of assembly is confirmed at the stopped position. In particular, when virtually simulating assembly using an information processing device such as a computer, multiple conditions can be considered in the circumferential and axial directions when setting the position where assembly of the segments 10 begins. In this case, many patterns must be considered to confirm whether assembly is possible.

[0070] In contrast, the assembly completion position where the segments 10 have been assembled can be easily set in any environment, including virtual ones. Therefore, in this embodiment, the assembly completion position is set as the initial position and shape measurements are performed, thereby simplifying the fitting interference analysis process and enabling shape measurement and analysis to be easily performed regardless of the state of the segments 10.

[0071] (Interference analysis step) Next, the process proceeds to step ST33 as an interference analysis step, where the shape calculation unit 211 of the control unit 21 derives the interference state between the segments 10 based on the measurement data of the segments 10 in the assembled state. The derivation of the interference state by the shape calculation unit 211 is performed at a preset location.

[0072] (How to create a coordinate system for combination positions) 7A and 7B are diagrams for explaining the central axis (reference point) on the segment 10 side and the central axis (reference point) on the annular body 13 side, respectively, used when assembling the segments according to this embodiment.

[0073] In this embodiment, first, the central axis 14 is set for each segment 10. As a method for setting the central axis 14, as shown in FIG. 7A, a fitting cylinder obtained by averaging the outer surfaces of the ends of the segment 10 is virtually generated as the reference shape 15 shown in FIG. 7B, and the central axis 14 of the generated reference shape 15 is set as the central axis of the segment 10. Note that a fitting cylinder may also be generated by averaging the inner surface of the segment 10. Note that if the annular body is a polygon, it is preferable to generate a fitting shape that matches the shape. Furthermore, a method of generating a fitting cylinder by selecting a partial portion can also be used.

[0074] Next, the central axes 14 of the segments 10 that make up the annular body 13 are aligned, and then the center of gravity of each segment 10 is moved relative to the central axis 14 to align the central angle T1 of the annular body 13, defined by a reference line 16 connecting the central axis 14 and each of the circumferential ends of the segment 10. Furthermore, when assembling the segments along the axial direction of the central axis 14, the segments are moved to a predetermined axial position. At this stage, if the reference shape 15 of the annular body 13, such as the outer diameter or inner diameter, does not satisfy the tolerance, the central angle T1 or the position is fine-tuned so that the tolerance of the reference shape 15 is satisfied. Here, the reference shape 15 is represented by a line within the planar shape of the annular body 13 along the transverse direction, such as the outer surface, inner surface, or centerline. The alignment method is not limited to the above-described method; it is also possible to use a method in which the segments are positioned at predetermined positions using the center of gravity of each segment.

[0075] Returning to Figure 6, based on the coordinate system created in this way, a predetermined location within a range of ±5° from each dividing section (five locations in the example shown in Figure 7B) can be selected as the interference analysis cross section of the circumferential joint 12a of the circumferential segment 10 with respect to a cross section of the line of the reference shape 15 of the annular body 13 viewed from a direction perpendicular to the central axis 14 of the annular body 13. At the same time, it becomes possible to determine the axial positional deviation of the circumferential joint 12a.

[0076] Furthermore, with respect to a cross section of the line of reference shape 15 of the annular body 13 seen from a direction along the central axis 14 of the annular body 13, for example, a range of ±5° from each dividing portion (five locations in the example shown in FIG. 7B) can be selected as an interference analysis cross section of the circumferential joint 12a of the circumferential segment 10. At the same time, it becomes possible to grasp the radial positional deviation of the circumferential joint 12a.

[0077] Furthermore, when performing interference analysis at the axial joint 12b, it is preferable to set the cross section within a range of, for example, ±5° with the position of the axial joint 12b as the reference, as in the method described above. Note that the method of creating a coordinate system described using Figures 7A and 7B is merely an example, and the creation and setting of a coordinate system can be performed by any method, and furthermore, the determination points are not necessarily limited to predetermined positions or numbers.

[0078] In step ST33, the shape calculation unit 211 generates a cross-sectional view of the segment from the segment shape data at a preset position, as described above, and derives shape information between the segments 10. In this way, by setting the method for determining the measurement points as shown in Figures 7A and 7B, the shape calculation unit 211 can automatically calculate the specified location using a predetermined method. Note that the cross-sectional view of the segment generated by the shape calculation unit 211 may be output to the input / output unit 23 of the shape measurement device 20, and an operator may visually determine the state of interference (interference level) that affects assembly and fitting, and input the interference level from the input / output unit 23.

[0079] 8 and 9 show a portion of the main body portion 11 and the joint portion 12 of the segment 10 that has been converted into data and that has been generated by the shape calculation unit 211 of the shape measurement device 20 according to one embodiment. FIG. 8 is an enlarged cross-sectional view showing a portion of the state in which any one of the main body portions 11c of the segment 10 that has been converted into data does not interfere with the adjacent main body portion 11d, and the arrangement of the segments 10 has been completed. FIG. 9 is an enlarged cross-sectional view showing a portion of the state in which any one of the main body portions 11c of the segment 10 that has been converted into data partially interferes with the adjacent main body portion 11d.

[0080] As shown in Figure 8, when there is no interference between any main body portion 11c and the main body portion 11d adjacent to this main body portion 11c, when the installation position of any joint portion 12c matches the position of the adjacent joint portion 12d, and when the interference level is low, the segments 10 can be assembled together.

[0081] Here, the interference level is determined as follows: When the segments 10 are placed in the assembly position, the interference level is determined based on whether or not the joints 12 are in a connectable state. If the connectable state is ensured, the interference level is determined to be low, and if not, the interference level is determined to be high.

[0082] Here, clearance c is typically defined as a circumferential or axial component between segments 10 at any position on the annular body 13, but is not necessarily limited to this definition and various definitions can be set depending on whether the segments 10 can be assembled. For example, as another definition of clearance c, when the vertices to be measured are predetermined and connected at an angle, it is possible to measure the distance corresponding to the circumferential or axial direction between the connected vertices and use this as clearance c. Alternatively, the distance may be measured in the normal direction in the cross section between each point or line connecting points in the shape data of the segments 10, i.e., for each mesh, and the distance when adjacent segments 10 come into contact in the assembled state, i.e., the shortest distance, may be set as clearance c.

[0083] The shape calculation unit 211 stores the result of the clearance c derived in a predetermined cross section as shape information in the shape database 221. The clearance c is derived for all main body portions 11 and joint portions 12 of the assembled parts at a plurality of predetermined locations. Then, the minimum clearance c is derived, and the positional relationship between any joint portion 12c and any joint portion 12d connected to the any joint portion is derived.

[0084] Specifically, the shape calculation unit 211 uses predetermined measurement software to extract the value that minimizes the clearance c between the segments 10 in each interference analysis cross section. Furthermore, information about the derived clearance c may be stored in the storage unit 22 in association with the segment identification ID of the segment type information stored in the segment type database 222. Similarly, the shape calculation unit 211 uses predetermined measurement software to extract values ​​for the position of the joint 12 and the size of the joint 12 (to confirm that a connecting member can be inserted) in each interference analysis cross section. Information about the derived values, such as the position and size of the joint 12, may be stored in the storage unit 22 in association with the segment identification ID of the segment type information stored in the segment type database 222.

[0085] (Assembly feasibility determination step) Next, the process proceeds to step ST34, which is a clearance determination step, where the determination unit 212 of the control unit 21 reads shape information from the shape database 221 of the storage unit 22 and determines whether assembly is possible according to a predetermined criterion. That is, the determination unit 212 makes a determination based on, for example, whether the clearance c between the segments 10 is equal to or less than a predetermined value. Note that the predetermined value can be set to any value, and in this embodiment, the predetermined value is set to 0, for example.

[0086] (Interference information assignment step) If the determination unit 212 determines in step ST34 that the clearance c between the segments 10 is equal to or less than a predetermined value, specifically, for example, equal to or less than 0 (c≦0) (step ST34: Yes), the process proceeds to step ST38. In step ST38, the determination unit 212 executes an interference information assignment process that assigns information about the interfering portion E in the segment 10 to be measured. The determination unit 212 outputs rejection information to which the information about the interfering portion E has been assigned, and stores the rejection information as shape information in the shape database 221. This completes the interference analysis process.

[0087] As described above, an example has been described in which whether or not the segments 10 can be assembled to form the annular body 13 is confirmed by determining whether or not the interference between the segments 10 satisfies a specified standard based on the manufacturing accuracy of the segments. While the above example focuses on the interference level between any one of the main body portions 11c and the main body portion 11d adjacent to that main body portion 11c, the locations for interference confirmation are not limited to these. Furthermore, if a failure is determined in steps ST34 and ST38, processing can be performed using the segment processing device 40 or 40A. In this case, the possibility of assembly failure can be reduced by adjusting the clearance c to a sufficiently large value. However, increasing the clearance c may result in a change in the shape of the annular body 13 itself, or may reduce the strength and rigidity of the annular body 13 in the case of a structural member. Therefore, it is preferable to adjust the clearance c to within the appropriate range described above.

[0088] If the determination unit 212 determines in step ST34 that the clearance c between any of the main body portions 11c and the main body portion 11d adjacent to the main body portion 11c is greater than a predetermined value, specifically, for example, greater than 0 (c>0) (step ST34: No), the process proceeds to step ST35. That is, if the clearance c in the parts assembled at multiple predetermined locations is greater than a predetermined value, it is determined that no interference occurs and that the segments 10 can be assembled together. Here, if the predetermined value is set to 0, the determination unit 212 can determine that no interference occurs and that the segments 10 can be assembled together if the clearance c is always positive.

[0089] (Step to understand the positional relationship of the joints) Next, in step ST35 as a joint positional relationship grasping step, the determination unit 212 acquires positional relationship information between any joint 12c and the joint 12d connected to the any joint. Thereafter, the process proceeds to step ST36, where the determination unit 212 determines whether the positional relationship between the any joint 12c and the joint 12d connected to the any joint is within an allowable range, i.e., determines whether the interference level is high or low, based on the positional relationship information acquired in step ST35.

[0090] The determination unit 212 can check the positional relationship between any one of the joints 12c and the joint 12d to be connected to this joint 12c, and determine the interference level based on whether the relative positional relationship between the joints 12c and 12d satisfies an allowable range, thereby determining pass / fail. That is, the determination unit 212 determines the level of interference based on whether any one of the joints 12c and the joint 12d to be connected to the joint 12c can be connected by a connecting member, for example, whether the hole positions match and a bolt or the like can be inserted. Here, if any one of the joints 12c and the joint 12d to be connected to the joint 12c cannot be connected by a connecting member, the interference level is determined to be high, and if it can be connected by a connecting member, the interference level is determined to be low.

[0091] Here, a state where the interference level is high in the positional relationship between an arbitrary joint portion 12c and a joint portion 12d to be connected to this arbitrary joint portion 12c is shown in FIGS.

[0092] As shown in Fig. 10, when it is confirmed that a predetermined coupling mechanism (not shown) is built into any coupling part 12c or that a coupling mechanism can be inserted therein, if the pair of lower ends of one of the pairs of lower ends of any coupling part 12c and the lower end of coupling part 12d coupled to this coupling part 12c (the lower ends of coupling parts 12c and 12d in Fig. 10) are aligned, and the upper end of coupling part 12d coupled to any coupling part 12c is higher than the upper end of coupling part 12c, the interference level is considered to be low. In this case, the coupling mechanism (not shown) of coupling part 12c can be coupled to coupling parts 12c and 12d without interference. Conversely, when the lower end of any joint 12c and the upper end of the joint 12d connected to this joint 12c are aligned at one of the lower end pairs (the lower ends of the joints 12 and 12d in FIG. 10), if the upper end of the any joint 12c and the joint 12d connected to this joint 12c are lower than the upper end of the any joint 12c, the interference level is considered to be high. In this case, the connecting member (not shown) of the joint 12 interferes and becomes unable to connect. Note that the interference level may also be determined by aligning one of the upper end pairs of the any joint 12c and the joint 12d connected to this joint.

[0093] Furthermore, as shown in FIG. 11 , when the upper and lower ends of a given joint 12c and a joint 12d connected to this joint 12c are higher than the upper and lower ends of the given joint 12c, respectively, the interference level is considered to be high. In this case, the coupling mechanism (not shown in FIG. 11 ) of the joint 12 interferes and becomes unable to couple. When the upper and lower ends of the given joint 12c are located between the upper and lower ends of the given joint 12d, respectively, the interference level is considered to be low. In this case, the coupling mechanism (not shown in FIG. 11 ) of the joint 12 can be coupled without interference.

[0094] If the determination unit 212 determines in step ST36 that the positional relationship between any joint 12c and the joint 12d connected to the any joint is outside the allowable range and that the interference level is high (step ST36: Yes), the process proceeds to step ST38. In step ST38, the determination unit 212 outputs information that the segment 10 being measured has failed, and stores this failure information as shape information in the shape database 221. Note that the failure information may also include information on the joint positional relationship described above. This completes the interference analysis process. Note that a failed segment 10 can be processed and corrected by the segment processing device 40, 40A to become a passing product if it satisfies the regulations.

[0095] On the other hand, if the determination unit 212 determines in step ST36 that the positional relationship between any joint 12c and the joint 12d connected to the joint 12c is within the allowable range and that the interference level is low (step ST36: No), the process proceeds to step ST37. In step ST37, the determination unit 212 outputs information that the segment 10 to be measured is acceptable. This acceptable information includes clearance information and information on the joint positional relationship as determined in step ST34. The determination unit 212 stores the acceptable information in the shape database 221. This completes the interference analysis process.

[0096] According to the clearance measurement shape analysis process of one embodiment, a segment is judged as unacceptable when a location where the clearance c is equal to or less than a predetermined value is found, thereby reducing the time and data volume required to identify unacceptable segments 10, and enabling the process to be carried out simply. In addition, by checking the positional relationship between any one joint 12c and the paired joint 12d to be connected to the joint 12c, it is determined whether the connecting mechanism of the joint 12 can be connected, and therefore it is possible to obtain rejection information before the joints 12 are actually connected.

[0097] 5, the control unit 21 outputs information on whether the segment 10 being measured is pass or fail to the input / output unit 23. Note that if a segment 10 is determined to be failing, a mark may be placed on the actual segment 10. Note that if a segment 10 is determined to be failing, it is possible to appropriately select whether to perform the adjustment process described below or discard it. This completes the segment measurement process.

[0098] The quality of the segment 10 can be controlled based on the segment measurement method described above. That is, in the quality control method for the segment 10, first, the segment 10 is manufactured in a joint manufacturing process in step ST1. Next, the shape of the segment 10 is measured in a shape measurement process in step ST2. Thereafter, in step ST3, an interference analysis process is performed using the measurement results obtained in the shape measurement process, thereby making it possible to control the quality of the segment 10 as a quality control process.

[0099] According to the method for measuring the segments 10 according to one embodiment of the present invention described above, it is possible to check whether the segments 10 can be assembled after their manufacture is complete or before assembly. While conventional methods require the segments 10 to be actually assembled, this method makes it possible to check the interference between the segments 10 as clearance c using information based on the measurement results, ensuring accuracy. Furthermore, because the determination begins from the completed assembly position of the segments 10, there is no need to search for the start position of assembly, and it is also possible to detect interference points early, allowing for efficient start of measurement of the clearance of the segments 10. Furthermore, it is possible to determine in advance whether the connecting mechanism of the joint portion 12 can be connected.

[0100] Furthermore, regardless of the condition of the segments 10, such as large diameters, long lengths, and weights, pre-assembly checks can be safely and easily performed at a factory or other on-site location. The method for measuring the segments 10 according to this embodiment can be used not only in factories but also in storage areas at construction sites. Specifically, for example, if there is concern about deformation of the segments 10 due to processing such as welding additional members, damage due to transportation, or excessive exposure to direct sunlight at the construction site, the shape of the segments 10 can be measured by the measuring unit 35 at the storage area at the construction site, and assembly can be determined before actual assembly, minimizing downtime of on-site work due to problems.

[0101] Although the segments 10 have been described above as an example, the present invention can be applied to any segment 10 that is a divided component that constitutes the ring-shaped body 13, regardless of the size, length, shape, assembly method, material, weight, or orientation of the ring-shaped body 13. In other words, the present invention can achieve the same effect in various ring-shaped bodies 13 constructed using multiple divided components.

[0102] Although one embodiment of the present invention has been specifically described above, the present invention is not limited to the above-described embodiment, and various modifications based on the technical concept of the present invention are possible. For example, the numerical values ​​and materials given in the above-described embodiment are merely examples, and different numerical values ​​and materials may be used as necessary.

[0103] For example, in each of the above-described embodiments and modifications, the determination unit 212 determines whether the clearance c between the segments 10 is equal to or less than a predetermined value as the predetermined criterion. However, the predetermined criterion is not limited to this, and the determination may be based on whether the clearance c is less than a predetermined value. Similarly, the "Yes" and "No" in step ST34 may be interchanged based on whether the predetermined criterion is equal to or greater than a predetermined value. Even in these cases, the predetermined value can be set to any value.

[0104] For example, the segment measurement method according to the above-described embodiment can be performed manually or automatically using shape measurement software or high-end CAD that is applied to a handheld 3D scanner. When performed automatically, the method can be performed using a software program by the control unit 21 of the shape measurement device 20. This can further improve the efficiency of the segment measurement method. [Explanation of symbols]

[0105] 1,1A Segment Measurement System 2 Network 10 segments 11, 11c, 11d Main body 12, 12c, 12d Joint 12a Circumferential joint 12b Axial coupling 13 Cycloids 14 Center axis 15 Standard shape 16 Reference Line 20,20A Shape measuring device 21, 31, 41 Control unit 22,32,42 Storage section 23,33,43 Input / output section 24, 34, 44 Communications Department 30A Measuring Terminal 35 Measurement section 40,40A Segment Processing Equipment 45 Segment processing section 211 Shape calculation section 212 Judgment section 221 Shape Database 222 Segment Species Database 311 Measurement control section 411 Processing control unit

Claims

1. A shape measurement method for analyzing an interference level between adjacent end faces and joints of segments that constitute an annular body, the method comprising: an assembly completion state setting step of setting an assembly completion state in which assembly of the segments is completed based on data of the segment shape of the segments; an interference analysis step of analyzing an interference level between adjacent end faces and joints of the segments in the assembled state. Shape measurement method.

2. The method further includes at least one of a step of determining pass / fail for the segment based on the interference level measured in the interference analysis step, and an interference information assigning step of assigning information about the interference portion to a portion determined to be an interference portion based on the interference level measured in the interference analysis step. The shape measuring method according to claim 1 .

3. a shape measurement step of measuring the segment shapes of the segments that constitute the annular body; and a shape measuring step of analyzing the interference level between the segments by the shape measuring method according to claim 1 or 2 based on the data of the segment shapes measured in the shape measuring step. How the segment is measured.

4. A segment manufacturing method for manufacturing segments that constitute an annular body, comprising: a segment manufacturing process for manufacturing segments; a segment measuring step of performing the segment measuring method according to claim 3 on the segment produced in the segment manufacturing step. Segment manufacturing method.

5. A segment quality control method for controlling the quality of segments that construct an annular body, comprising: a segment manufacturing process for manufacturing the segment; a segment measuring step of measuring the shape of the segment produced in the segment manufacturing step by the segment measuring method according to claim 3; and a quality control step of controlling the quality of the created segments using the results obtained from the segment measurement step. Segment quality control methods.

6. A shape measuring device including a control unit that analyzes an interference level between adjacent end faces and joints of segments that form an annular body, The control unit an assembly completion state setting process for setting an assembly completion state in which assembly of the segments is completed based on data of the segment shapes of the segments; In the assembled state, an interference analysis process is performed to analyze the interference level between the end faces and joints of the adjacent segments. Shape measuring device.

7. Further, a communication unit is provided, The communication unit, by the control unit, At least one of the process of acquiring data on the segment shape of each of the segments and the process of outputting information on the interference level obtained by the interference analysis process is executed. The shape measuring device according to claim 6.

8. a measuring unit configured to be able to measure the segment shapes of each of the segments that form the annular body; and a shape measuring device according to claim 6 or 7, which analyzes an interference level between the segments based on data of the segment shapes measured by the measuring unit. Segment measurement system.

9. A measurement terminal including a control unit capable of analyzing an interference level between adjacent end faces and joints of segments that form an annular body, a measurement unit that measures the segment shapes of the segments by the control unit; a communication unit that executes at least one of an output process that outputs the measured segment shapes as data to the shape measuring device according to claim 6 by the control unit, and an acquisition process that acquires information about the interference level for each segment from the shape measuring device; an output unit capable of outputting the information acquired by the control unit in a predetermined format. Measurement terminal.

10. The control unit a process of determining whether the segment is pass or fail based on the acquired information on the interference level and a predetermined criterion; an interference information assigning process for assigning information about the interference portion to a portion determined to be an interference portion based on the acquired information about the interference level and a predetermined criterion. The measurement terminal according to claim 9.

11. The measurement terminal according to claim 9 ; and a shape measuring device according to claim 6 that analyzes an interference level for each segment based on data of the segment shape measured by the measurement terminal. Segment measurement system.

12. A segment quality control method for controlling the quality of segments that constitute an annular body, comprising: The quality of the segment is managed using information about the interference level obtained from the interference analysis process executed by the control unit of the shape measuring device according to claim 6 or 7. Segment quality control methods.

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