Fitting torque management system for steel pipe column and fitting torque management method for steel pipe column

Abstract

To provide a fitting torque management system and the like for steel pipe columns that can join a lower steel pipe column and an upper steel pipe column by introducing a desired torque more safely and efficiently.SOLUTION: There is provided a fitting torque management system for joining a lower steel pipe column threaded joint and an upper steel pipe column threaded joint in which the lower steel pipe column threaded joint and the upper steel pipe column threaded joint are each provided in advance with a lower mark and an upper mark that are continuous when a desired fitting torque is introduced, and which includes an imaging device that images the lower steel pipe column threaded joint and the upper steel pipe column threaded joint in a fitted state together with the lower mark and the upper mark, a torque introduction device that introduces the fitting torque, and an information processing device that acquires a fitting torque value and an amount of deviation between the lower and upper marks. The information processing device includes: an image processing calculation unit that detects the lower mark and the upper mark in the captured image; a measurement unit that measures the amount of deviation between the lower mark and the upper mark; and a display processing unit that displays the introduced fitting torque value together with the measured amount of deviation on the captured image.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a steel pipe pole fitting torque management system and a steel pipe pole fitting torque management method used when joining steel pipe poles in an upright position via threaded joints. [Background technology]

[0002] Conventionally, when joining steel pipe poles in an upright position via a threaded joint, the upper steel pipe pole located on the upper side is rotated and the threaded joint at the lower end of the upper steel pipe pole is fitted into the threaded joint at the upper end of the lower steel pipe pole located on the lower side, as disclosed in Patent Document 1, for example. At this time, a fitting torque of a predetermined value or more must be introduced into the joint where the threaded joints of the upper and lower steel pipe poles are fitted together to ensure the necessary strength.

[0003] In addition, steel pipe columns are equipped with joints that connect beams and other structures that span between them and adjacent steel pipe columns, and when joining steel pipe columns by applying a predetermined fitting torque, the joint must be oriented in the same direction as the beam so that the joint can be connected to the beam.

[0004] For this reason, when joining steel pipe columns via threaded joints, first, at a threaded joint manufacturing factory or the like, a marking line is introduced on each of the upper threaded joint of the lower steel pipe column and the lower threaded joint of the upper steel pipe column to indicate their relative positions when they are previously fitted together with the desired fitting torque, and then the two are separated and transported to a factory where the steel pipes and threaded joints are welded together.

[0005] The steel pipes and threaded joints are then assembled and welded together. The fittings required for torque application are then attached to the steel pipe columns, which are then transported to the construction site. At the construction site, the lower steel pipe column is aligned and held on a platform so that the joints on the steel pipe column are aligned with the beams, etc. The upper steel pipe column is then fitted and joined from above while torque is applied using, for example, a hydraulic jack. The jack operator manually records the torque applied by the jack, and the amount of misalignment between the scribed line of the threaded joint on the lower steel pipe column and the scribed line of the threaded joint on the upper steel pipe column is visually measured and recorded using a ruler or similar tool to manage the applied fitting torque. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2022-76293 Summary of the Invention [Problem to be solved by the invention]

[0007] Conventionally, when measuring the amount of misalignment between the scribed line of the screw joint of the lower steel pipe column and the scribed line of the screw joint of the upper steel pipe column by using a ruler or similar tool, the measurer had to get close to the joint between the upper and lower steel pipe columns, where a large torque was being introduced with a hydraulic jack, forcing the measurer to perform the measurement in an unsafe condition. In addition, because the amount of misalignment of the scribed lines was measured visually, there was a risk of misreading the scale or recording errors. Furthermore, because the amount of misalignment of the scribed lines had to be measured while checking the fitting torque values ​​at multiple joints on each of the many upright inverted support columns, the work of measuring, recording, data management, etc. was complicated.

[0008] Furthermore, the fitting torque introduction work had to be carried out while mutually confirming the torque value introduced by the jack and the amount of deviation of the marking line, which posed a problem as it took time for the jack operator and the person measuring the amount of deviation of the marking line, who were working in separate locations, to perform the confirmation work, resulting in poor work efficiency.

[0009] The present invention has been made in consideration of such problems, and its main object is to provide a steel pipe pole fitting torque management system and a steel pipe pole fitting torque management method that can more safely and efficiently introduce a desired torque to join a lower steel pipe pole and an upper steel pipe pole. [Means for solving the problem]

[0010] In order to achieve this object, the steel pipe column fitting torque management system of the present invention is a steel pipe column fitting torque management system that manages the fitting torque when joining a steel pipe column having a lower steel pipe column threaded joint and an upper steel pipe column threaded joint at the upper end and lower end, The lower steel pipe column threaded joint and the upper steel pipe column threaded joint are each provided with a consecutive lower mark and an upper mark at the time when the desired fitting torque is introduced in advance, A photographing device that photographs the lower steel pipe column threaded joint and the upper steel pipe column threaded joint in a fitted state together with the lower mark and the upper mark; a torque introducing device that introduces the fitting torque while controlling it; an information processing device that acquires the applied fitting torque value and the amount of deviation between the lower mark and the upper mark, The information processing device includes: an image processing and calculation unit that detects the lower mark and the upper mark on a photographed image photographed by the photographing device; a measuring unit that measures the amount of deviation between the lower mark and the upper mark; a display processing unit that displays the fitting torque value introduced by the torque introducing device on the captured image together with the amount of deviation measured by the measurement unit; and The present invention is characterized by having the following.

[0011] The steel pipe column fitting torque management system of the present invention is characterized in that the upper mark attached to the upper steel pipe column threaded joint is detected by the image processing calculation unit through edge detection processing of the colored portions with different shades on both sides of the mark.

[0012] The steel pipe pole fitting torque management system of the present invention is a system in which the photographing device continuously photographs, The display processing unit has a display screen that displays the fitting torque value introduced by the torque introducing device and the amount of deviation measured by the measuring unit together with the photographed image.

[0013] In the steel pipe pole fitting torque management system of the present invention, the information processing device has an operation means, The method is characterized in that a management sheet is generated that displays the captured image at the time when the operating means is operated, the fitting torque value at that time, and the amount of misalignment measured by the measuring unit.

[0014] In addition, the steel pipe column fitting torque management method of the present invention is characterized in that the fitting torque value of the steel pipe column and the deviation amount between the lower mark and the upper mark are recorded using the steel pipe column fitting torque management system.

[0015] According to the steel pipe column fitting torque management system and steel pipe column fitting torque management method of the present invention, when an upper steel pipe column threaded joint is fitted to a lower steel pipe column threaded joint, the lower steel pipe column threaded joint and the upper steel pipe column threaded joint are photographed by the photographing device together with the lower mark and the upper mark, and the amount of deviation between the lower mark and the upper mark is measured based on the photographed image. At this time, the display processing unit of the information processing device displays the fitting torque value introduced by the torque introducing device on the photographed image together with the amount of deviation between the lower mark and the upper mark measured by the measurement unit.

[0016] Therefore, since the photographed image, the fitting torque value, and the amount of misalignment between the lower mark and the upper mark can be confirmed on the display of the information processing device, there is no need to directly measure the amount of misalignment between the lower mark and the upper mark using a ruler, etc. Therefore, there is no need to approach the joint between the upper and lower steel pipe columns where a large torque is being introduced, and it becomes possible to safely and easily fit the upper steel pipe column threaded joint into the lower steel pipe column threaded joint while introducing the desired fitting torque while checking the amount of misalignment between the lower mark and the upper mark and the introduced torque.

[0017] At this time, unlike when measuring the amount of misalignment between the lower mark and the upper mark visually by placing a ruler against the mark, there is no risk of misreading the scale or recording errors, so it is possible to more accurately record the amount of misalignment between the lower mark and the upper mark and the applied mating torque value.Furthermore, it is possible to more accurately and easily store and manage the amount of misalignment between the lower mark and the upper mark and the applied mating torque value at multiple joints on each of the many erected columns.

[0018] Furthermore, for example, the operator of the torque introducing device can operate the torque introducing device to fit the upper steel pipe column threaded joint to the lower steel pipe column threaded joint while visually checking the displayed image and confirming the introduced fitting torque value and the measured amount of misalignment between the lower mark and the upper mark. Therefore, there is no need for confirmation work between the operator and the person checking, as is the case when the operator of the torque introducing device and the person checking the amount of misalignment between the lower mark and the upper mark are different people, and work can be carried out efficiently. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a steel pipe pole fitting torque management system and a steel pipe pole fitting torque management method that can more safely and efficiently introduce a desired torque to join a lower steel pipe pole and an upper steel pipe pole. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram showing a steel pipe pole provided with a threaded joint in an embodiment of the present invention. [Figure 2] 1 is a diagram showing an outline of a holding mechanism and a joining device in a low-head environment according to an embodiment of the present invention. FIG. [Figure 3] 1 is a diagram showing a base stand of a holding mechanism according to an embodiment of the present invention; [Figure 4] 1 is a plan view showing an openable / closable support cradle placed on a base cradle in an embodiment of the present invention. FIG. [Figure 5] FIG. 2 is a side view showing a holding mechanism and a hydraulic jack for torque introduction according to an embodiment of the present invention. [Figure 6] FIG. 1 is a diagram showing the configuration of a fitting torque management system for a steel pipe pole in an embodiment of the present invention. [Figure 7] 1 is a diagram illustrating an information processing device according to the present invention. [Figure 8] FIG. 10 is a diagram showing an example of a management data sheet according to an embodiment of the present invention. [Figure 9] FIG. 2 is a diagram showing the scribed lines, white portions (hatched portions), and green portions (sand pattern portions) applied to a steel pipe pole in an embodiment of the present invention. [Figure 10] 1 is a perspective view showing a state in which an imaging device according to an embodiment of the present invention is attached; [Figure 11] FIG. 10 is a diagram showing a display screen when a camera video tab is clicked. [Figure 12] FIG. 10 is a diagram showing a display screen when a settings tab is clicked. [Figure 13] FIG. 10 is a diagram showing a display screen when an analysis video tab is clicked. [Figure 14] FIG. 10 is a diagram showing the display screen when the construction record tab is clicked. [Figure 15] FIG. 10 is a diagram showing a display screen in a state where a desired fitting torque has been introduced. [Figure 16] FIG. 10 is a diagram showing a display screen when a photo record tab is clicked. [Figure 17] FIG. 10 is a graph showing the relationship between the amount of deviation and the torque value stored in the storage means. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention relates to a steel pipe pole fitting torque management system and a steel pipe pole fitting torque management method used when joining steel pipe poles in an upright position via threaded joints using an underground trench. The steel pipe pole fitting torque management system and steel pipe pole fitting torque management method will be described in detail below with reference to the drawings.

[0022] In this embodiment, an example is given in which a steel pipe pole having a desired length is constructed by sequentially joining steel pipe poles in an upright position, and then erected in an underground trench. First, a steel pipe pole with a threaded joint will be described with reference to FIG.

[0023] As shown in Fig. 1, a steel pipe pole 1 comprises a steel pipe pole body 2 and threaded joints 3 provided at both ends thereof. The threaded joints 3 are composed of a female threaded joint 31 provided at the upper end side when the steel pipe pole body 2 is in an upright position, and a male threaded joint 32 provided at the lower end side.

[0024] The female thread joint 31 comprises a cylindrical body 31a arranged coaxially with the steel pipe pole 1, and a female thread portion 31b formed on the inner circumferential surface of the cylindrical body 31a. The male thread joint 32 comprises a cylindrical body 32a arranged coaxially with the steel pipe pole 1, and a male thread portion 32b formed on the outer circumferential surface of the cylindrical body 32a. Therefore, when joining steel pipe poles 1 in an upright state, the male thread joint 32 provided on the upper steel pipe pole 1b is inserted into the female thread joint 31 provided on the lower steel pipe pole 1a, and then the upper steel pipe pole 1b is rotated to tighten and fit the male thread portion 32b into the female thread portion 31b.

[0025] In addition, below the steel pipe column main body 2, a pair of torque introduction fittings 21, which are used when joining via these threaded joints 3, are provided on the outer peripheral surface at intervals of 180° in the circumferential direction. Furthermore, above the steel pipe column main body 2, a pair of rotational torque receiving shear keys 22 are provided on the outer peripheral surface at intervals of 180° in the circumferential direction. In addition, the steel pipe column main body 2 is provided with an outer diaphragm for beam connection (not shown) at a height position that will become the connection part with the beam when the underground structure is later constructed.

[0026] The rotational torque receiving shear key 22 functions as a rotation stopper for the lower steel pipe column 1a when the upper steel pipe column 1b is rotated relative to the lower steel pipe column 1a and the two are joined together with the threaded joint 3. The rotational torque receiving shear key 22 will be described later together with the joining device 100 equipped with the holding mechanism 200.

[0027] When joining the steel pipe pole 1 having the above-mentioned configuration in an upright position, a joining device 100 for the steel pipe pole 1 as shown in Fig. 2 is used. The joining device 100 is installed on the ground surface so as to surround the mouth of the underground trench H, and is equipped with a holding mechanism 200 and a rotation mechanism 300.

[0028] The holding mechanism 200 has the function of holding the steel pipe pole 1 in an upright position while hanging down in the underground trench H. In addition, the rotation mechanism 300 has the function of rotating the steel pipe pole 1 that is joined to the hanging steel pipe pole 1 held by the holding mechanism 200.

[0029] The holding mechanism 200 includes a base frame 210 placed on a concrete foundation B provided to protect the mouth of the underground trench H, and an openable support frame 220 provided on the base frame 210. An insertion hole 211 is formed in the approximate center of the base frame 210, through which the steel pipe column 1 can be inserted.

[0030] As shown in Fig. 3, the openable / closable support cradle 220 is formed of a substantially flat plate-like member in which a pair of split support cradles 220a are connected separably via an opening / closing device 222 that expands and contracts so as to open and close. The pair of split support cradles 220a are close to each other and have an opening at the substantially center in a plan view. The opening has inner circumferential surfaces 221 facing each other of the pair of split support cradles 220a, each shaped to fit the outer circumferential surface of the steel pipe column 1, and the inner circumferential surfaces 221 are provided with a plurality of support pieces 230 and a rotational torque receiving bracket 260 that come into contact with the steel pipe column 1 when the steel pipe column 1 inserted through the opening of the openable / closable support cradle 220 is held.

[0031] The opening formed by this inner peripheral surface 221 is configured so that the pair of divided support frames 220a opens and closes by expanding and contracting the distance between them as the pair of divided support frames 220a moves closer to or away from each other through the operation of the opening and closing device 222. Then, when the pair of divided support frames 220a is in a state in which the pair of divided support frames 220a is close to each other, the rotational torque receiving shear key 22 of the steel pipe column 1 is fitted into the rotational torque receiving fitting 260, so that even when a rotational force around the central axis acts on the steel pipe column 1, the rotational behavior of the steel pipe column 1 is suppressed.

[0032] 4 and 5, the rotation mechanism 300 is provided on the upper surface of the base frame 210, and includes a pair of support columns 301 and an extension device 302 provided on each of the support columns 301. The support columns 301 are arranged on the upper surface of the base frame 210 so as to face each other with the steel pipe column 1 in between, and the base ends of the extension devices 302 are installed on the side surfaces of the support columns 301.

[0033] A hydraulic jack or the like is employed for the expansion device 302, and its expansion direction is set to be the tangential direction of the steel pipe column 1 and perpendicular to the opening and closing device 222 provided in the holding mechanism 200, as shown in Fig. 4. When the expansion device 302 is contracted, the rotation mechanism 300 grips the torque introduction fitting 21 of the steel pipe column to be connected, i.e., the upper steel pipe column 1b, with the torque introduction gripping fitting 303, and extends the expansion device 302, thereby applying a rotational force to the upper steel pipe column 1b, and tightening the male thread joint (hereinafter also referred to as the upper steel pipe column thread joint) 32 of the upper steel pipe column 1b to the female thread joint (hereinafter also referred to as the lower steel pipe column thread joint) 31 of the lower steel pipe column 1a held by the holding mechanism 200, thereby joining the two.

[0034] As shown in FIGS. 6 and 7, a steel pipe pole fitting torque management system (hereinafter referred to as the management system) 5 includes an information processing device 10, a photographing device 20, and a torque introducing device 30 made up of a hydraulic unit.

[0035] The photographing device 20 is a video camera capable of photographing the joint between the mating lower steel pipe column threaded joint 31 and upper steel pipe column threaded joint 32. Its form may be any as long as it has the function of photographing images. The photographing device 20 sequentially sends data of the photographed images that it continuously photographs to the information processing device 10.

[0036] The torque introducing device 30 has the extension device 302 of the rotation mechanism 300 described above, an extension / contraction control unit 310 that controls and operates the extension device 302, and a pressure converter 320 that converts the hydraulic pressure of the extension device 302 into an electrical signal, and when an operation unit 311 provided on the extension / contraction control unit 310 is operated, the extension device 302 is extended or contracted under the control of the extension / contraction control unit 310. Then, in the torque introducing device 30, the hydraulic pressure applied to the extension device 302 under the control of the extension / contraction control unit 310 is converted into an electrical quantity by the pressure converter 320 and is sequentially sent to the information processing device 10 as a fitting torque value.

[0037] The information processing device 10 is a terminal device having the function of measuring the amount of deviation between a score line pre-marked on the lower steel pipe column threaded joint 31 (hereinafter referred to as the lower score line) and a score line pre-marked on the upper steel pipe column threaded joint 32 (hereinafter referred to as the upper score line) based on the data of the photographed image taken by the photographing device 20, and displaying the measured amount of deviation, the fitting torque value introduced by the torque introducing device 30 at the time the image was photographed, and the photographing time together with the photographed image. The lower score line and the upper score line will be described in detail later.

[0038] The information processing device 10 is placed in a safe location away from the underground trench H and in a position visible to the operator of the torque introducing device 30, and is equipped with at least a display screen 11, a clock means 12, a memory means 13, an image processing calculation unit 14, an operation means 15, and a communication means 16, as shown in Figure 7.

[0039] The display screen 11 is configured, for example, by a flat panel display such as a liquid crystal display or an organic EL display, or a monitor. The clock means 12 is a built-in clock of the information processing device 10, and outputs time information (timekeeping information). For example, it is configured with an RTC (Real Time Clock) as a hardware clock, a system lock, etc. The storage means 13 stores, for example, report data linking values ​​measured by the information processing device 10 and fitting torque values ​​with time information for each joint of each inverted-drive support, and data such as a fitting management data sheet S in which management data for each joint of each inverted-drive support is arranged on a sheet, as shown in FIG. 8.

[0040] The operation means 15 includes a keyboard having cursor keys, numeric input keys, and various function keys, as well as a pointing device such as a mouse. It also receives operation signals input by key operation, mouse operation, etc., and outputs them to the display screen 11, storage means 13, and image processing and calculation unit 14. The display screen 11 and operation means 15 may be integrated into one unit, such as a flat panel display with a touch panel.

[0041] The communication means 16 transmits and receives various data via the network. For example, it receives photographed image data transmitted from the photographing device 20 and fitting torque values ​​transmitted from the torque introducing device 30, and transmits them to the image processing and calculation unit 14. Any communication protocol may be used as long as mutual communication is possible.

[0042] The network is a communication network that connects at least the information processing device 10 with the imaging device 20 and the torque introducing device 30 and provides a connection path so that data can be transmitted and received after the connection is established. As long as the above communication network can be formed, it may be wired, wireless, or a combination of these. In this embodiment, the information processing device 10, the imaging device 20, and the torque introducing device 30 are connected by communication cables.

[0043] The image processing calculation unit 14 is equipped with a CPU, GPU, ROM, RAM, hardware interface, etc., and by executing a predetermined program, the functions of the boundary detection unit 141, measurement unit 142, management sheet data generation unit 143, and display processing unit 144, which will be described later, are realized.

[0044] Although details will be described later, the boundary detection unit 141 realizes a function of detecting the position of the upper scribing line based on the data of each pixel of the acquired photographed image. The measurement unit 142 realizes a function of measuring the amount of deviation in the circumferential direction between the position of the lower scribing line specified based on the data of each pixel of the acquired photographed image and the position of the upper scribing line detected by the boundary detection unit 141.

[0045] The display processing unit 144 realizes a function of displaying on the display screen 11 the image captured by the imaging device 20, the amount of deviation between the lower scoring line and the upper scoring line at the time of capturing, the fitting torque value, and the time of capturing.

[0046] The programs that realize the functions of the boundary detection unit 141, measurement unit 142, display processing unit 144, management sheet generation unit 143, and display processing unit 144 in the information processing device 10 may be stored on a computer connected to a network such as the Internet and provided by downloading via the network. Alternatively, they may be provided or distributed via a network such as the Internet. Alternatively, they may be provided by being pre-installed in a ROM or the like.

[0047] The information processing device 10 may be any device such as a notebook PC, a tablet terminal, or a smartphone. The output device 17 connected to the information processing device 10 may also be any device that can output the processing results obtained by the image processing calculation unit 14 of the information processing device 10. For example, the output device 17 may be a display provided separately from the display screen 11, a printer, or the like.

[0048] An example of a method for managing the fitting torque of a steel pipe pole using the above-mentioned management system 5 will be described below, along with a procedure for joining a steel pipe pole 1 in an upright position via a threaded joint 3. In the following description, of the two steel pipe poles 1 to be joined, the steel pipe pole 1b located at the upper side will be referred to as the upper steel pipe pole 1b, and the steel pipe pole 1a located at the lower side will be referred to as the lower steel pipe pole 1a.

[0049] The two steel pipe columns 1a, 1b to be joined are joined in advance at a manufacturing factory or the like by fitting the upper steel pipe column threaded joint 32 onto the lower steel pipe column threaded joint 31 while measuring the fitting torque, and a fitting torque of, for example, 250 kN m is introduced that will provide the required strength of the joint, and lower and upper scribe lines indicating the relative circumferential positions of the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 at this time are made so that they are continuous on the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32. For example, as shown in Figure 9(a), the lower scribe line 31c on the lower steel pipe column threaded joint 31 and the upper scribe line 32c on the upper steel pipe column threaded joint 32 are made so that they are aligned in a straight line. Here, the lower score line 31c of the lower steel pipe column threaded joint 31 and the upper score line 32c of the upper steel pipe column threaded joint 32 correspond to the lower mark and upper mark that are applied consecutively to the lower steel pipe column threaded joint and the upper steel pipe column threaded joint, respectively, at the time when the desired fitting torque has been introduced in advance.

[0050] At this time, the lower marking line 31c and the upper marking line 32c are positioned at the construction site so that the position of the external diaphragm for the beam joint to be connected to the beam spanning the adjacent reverse-cast support is aligned with the position of the beam, and when torque is introduced using the torque introduction device 30, the camera device 20 is attached and the line is placed in a position where it can be photographed.

[0051] 9(b), the upper steel pipe column threaded joint 32 has adjacent colored portions of different colors, more specifically, colored portions 32d and 32e with different shades, on both sides of the upper scribe line 32c in the circumferential direction of the upper steel pipe column threaded joint 32. In other words, the colored portions 32d and 32e are provided so that the upper scribe line 32c is the boundary between the two colored portions 32d and 32e.

[0052] In this case, when the data of the image captured by the image capturing device 20 is captured as color data for each pixel, for example, by digitizing the R (red), G (green), and B (blue) values ​​for each pixel, the two colored portions 32d and 32e preferably have a large difference in any of the R (red), G (green), and B (blue) values ​​between them. In this embodiment, for example, a white colored portion (hereinafter also referred to as a white portion) 32d and a green colored portion (hereinafter also referred to as a green portion) 32e are provided. In the drawings, the white portion 32d is shown with diagonal lines, and the green portion 32e is shown with a sandy pattern. Here, the lower scribing line 31c, the upper scribing line 32c, the white portion 32d, and the green portion 32e are continuous and approximately collinear when the mating torque is desired.

[0053] Furthermore, as shown in Figure 9(b), the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 each have a scale 33 provided in a direction along their respective edge. The scale 33 has graduations indicating "0" aligned with the lower scribing line 31c and the upper scribing line 32c, and has graduations in the left and right directions. Furthermore, each scale 33 is provided slightly away from the edge of the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32, so that the lower scribing line 31c and the upper scribing line 32c on the edge are exposed. The lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32, which have been marked with scribe lines 31c and 32c, are separated at once and transported to a factory where the steel pipe column body 2 is welded to the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32.

[0054] The steel pipe column body 2, the lower steel pipe column threaded joint 31, and the upper steel pipe column threaded joint 32 are then assembled and welded together. At this time, the torque introduction fittings 21 required for torque introduction are attached to the steel pipe column 1, which is then manufactured and transported to the construction site. At the construction site, the lower steel pipe column 1a suspended into the underground trench H is supported by the holding mechanism 200 of the connection device 100, which is installed on the foundation concrete B so as to surround the underground trench H. At this time, the openable support frame 220, with the pair of split support frames 220a spaced apart, adjusts the position of the lower steel pipe column 1a suspended into the underground trench H so that the rotational torque receiving shear key 22 is positioned corresponding to the rotational torque receiving fitting 260 in a plan view, as shown in FIG. 3.

[0055] 4, the pair of split support frames 220a are slid so that the diameter of the opening surrounded by the inner peripheral surface 221 of the open / close type support frame 220 is reduced, and the support piece 230 is brought into contact with the lower steel pipe column 1a. In this way, the lower steel pipe column 1a is held by the holding mechanism 200 via the support piece 230, and the rotational torque receiving shear key 22 of the lower steel pipe column 1a is fitted into the rotational torque receiving fitting 260, thereby restricting movement in the rotational direction.

[0056] Once the lower steel pipe column 1a is held by the holding mechanism 200, as shown in Fig. 2, the upper steel pipe column 1b is lifted by the lifting device L using a lifting jig and suspended until the upper steel pipe column threaded joint 32 is inserted into the lower steel pipe column threaded joint 31 of the lower steel pipe column 1a. In this state, as shown in Fig. 10, the torque introduction holding fitting 303 of the expansion device 302 provided in the rotation mechanism 300 is attached to the torque introduction fitting 21 of the upper steel pipe column 1b, and the camera device 20 is attached to the outer peripheral surface of the lower steel pipe column threaded joint 31. At this time, the camera device 20 and the torque introduction device 30 are connected to be able to communicate with an information processing device 10 that is located at a location remote from the lifting device L and the rotation mechanism 300.

[0057] The photographing device 20 is attached, for example, by fixing the photographing device 20 to a mounting base 201 that protrudes outward in the diameter direction of the lower steel pipe column threaded joint 31, and the mounting base 201 is attached to the outer surface of the lower steel pipe column threaded joint 31 by, for example, a magnet. The attached photographing device 20 can photograph the outer surfaces of the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 toward the center of the lower steel pipe column threaded joint 31.

[0058] At this time, the operating means 15 of the information processing device 10 is operated to start up the management system 5, and the display screen 11 of the information processing device 10 displays the captured image 11a captured by the photographing device 20, as shown in Figure 11. Then, while checking the image on the display screen 11, the photographing device 20 arranges the image on the display screen 11 so that the lower score line 31c of the lower steel pipe column threaded joint 31, the upper score line 32c of the upper steel pipe column threaded joint 32, and the two colored portions 32d, 32e are included within the image, and the lower score line 31c of the lower steel pipe column threaded joint 31 is positioned approximately in the center of the captured image in the left-right direction. At this time, an area designation frame 110 for designating a predetermined area of ​​the displayed image is also displayed on the display screen 11.

[0059] 11, on the display screen 11, a header portion 11b located above the captured image 11a on the screen has a plurality of clickable tabs arranged therein, and the time recorded by the clock means 12 is displayed on the right edge. In the example of FIG. 11, the header portion 11b has five tabs: a "Camera Footage" tab 11c, an "Analysis Footage" tab 11d, a "Settings" tab 11e, a "Construction Record" tab 11f, and a "Photo Record" tab 11g.

[0060] After the photographing device 20 is installed, the fitting torque introduced by the torque introducing device 30 is measured while the extension device 302 is extended to rotate the upper steel pipe column 1b and fit the upper steel pipe column thread joint 32 into the lower steel pipe column thread joint 31.

[0061] When fitting the upper steel pipe column threaded joint 32 into the lower steel pipe column threaded joint 31, the photographed image 11a displayed when the photographing device 20 was installed is displayed on the display screen 11 of the started management system 5. At this time, the upper steel pipe column 1b is stopped and not rotated.

[0062] Next, the operator clicks on the "Settings" tab 11e on the display screen 11 to perform initial settings. Clicking on the "Settings" tab 11e displays a settings pop-up window 11h on the captured image 11a, as shown in FIG. 12. The settings pop-up window 11h includes input fields for inputting "Actual Measurement Value" 11i, "Correction Value" 11j, and "Brightness" 11k, a "Calibration in Progress" checkbox 11l that is clicked during calibration, a "Horizon Display" checkbox 11m that is used to display the horizon, and a "Save" button 11n that is clicked to save the settings made in the settings pop-up window 11h. The displayed pop-up window can be moved as needed within the captured image 11a by the operator's operation.

[0063] The operator first clicks the "Horizon line display" checkbox 11m in the settings pop-up window 11h to display a horizontal line 111 on the displayed photographed image 11a, and then installs the photographing device 20 horizontally so that the horizontal line 111 is along the joint between the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32. After installing the photographing device 20, the operator clicks the "Horizon line display" checkbox 11m to stop displaying the horizontal line 111, and then clicks the "Save" button 11n to save the settings and close the settings pop-up window 11h.

[0064] Next, the operator clicks the "Analysis Video" tab 11d on the display screen 11. Clicking the "Analysis Video" tab 11d makes the area designation frame 110 on the captured image 11a movable, and as shown in FIG. 13, a lower scribing line pointer 11o indicating the left-right position of the lower scribing line 31c of the lower steel pipe column threaded joint 31 recognized on the captured image 11a and an upper scribing line pointer 11p indicating the left-right position of the upper scribing line 32c of the upper steel pipe column threaded joint 32 are displayed. The area designation frame 110 has a rectangular shape that is elongated in the left-right direction, and the area designation frame 110 and the lower scribing line pointer 11o can be moved using the operating means 15, such as a mouse pointer. In addition, the lower scribing line pointer 11o and the upper scribing line pointer 11p are positioned near the boundary line that marks the joint between the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 on the image.

[0065] The operator moves the area designation frame 110 using the operating means 15 and places it in a position that includes both the white portion 32d and the green portion 32e provided on the upper steel pipe column threaded joint 32 within the area designation frame 110.

[0066] When the operator places the region designation frame 110, the image processing calculation unit 14 executes a so-called edge detection process. Specifically, the R, G, and B values, which range from 0 to 255 and indicate the color of each pixel within the region designation frame 110, are analyzed to distinguish white from other colors. For example, the R, G, and B values ​​for white are 255, 255, and 255, respectively. Therefore, if any of the R, G, and B values ​​contains a value of, for example, 230 or less, the pixel is determined to be a non-white pixel, thereby distinguishing between white pixels and pixels of other colors within the region designation frame 110. The result of the determination is displayed, for example, on the displayed image by coloring areas within the region designation frame 110 detected as white in white and areas containing pixels of other colors in gray. Furthermore, since the R, G, and B values ​​for green are 0, 128, and 0, respectively, it is also possible to detect pixels whose R and B values ​​are approximately 0 as green pixels.

[0067] The leftmost edge of the area detected as white is then recognized as the position of the upper scribing line 32c, which is the boundary with the green area, and the recognized position is displayed by the upper scribing line pointer 11p near the joint between the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32. In this embodiment, because the green portion 32e is located to the left of the white portion 32d, the leftmost edge of the area detected as white is determined to be the boundary with the green area. However, if the green portion 32e is located to the right of the white portion 32d, the rightmost edge of the area detected as white is determined to be the boundary with the green area. If the white portion within the area specification frame 110 is not clearly displayed at this time, open the settings pop-up window 11h, adjust the brightness in the "Brightness" input field 11k, and save the setting.

[0068] In the example of Figure 13, the upper scribing line pointer 11p is shown as a gray circle, the center of which is the boundary between the white portion 32d and the green portion 32e. After the upper scribing line pointer 11p displays the boundary between the white portion 32d and the green portion 32e, the image processing calculation unit 14 sequentially detects the white region within the region designation frame 110 as the displayed image changes, and displays the position of the upper scribing line 32c with the upper scribing line pointer 11p. Therefore, when the upper steel pipe column 1b is rotated to fit the upper steel pipe column threaded joint 32 into the lower steel pipe column threaded joint 31, if the position of the upper scribing line 32c moves as the upper steel pipe column 1b rotates, the position of the upper scribing line pointer 11p on the screen also moves.

[0069] Next, the operator moves the displayed lower scribing line pointer 11o to the position of the lower scribing line 31c on the photographed image 11a using the operating means 15. In the example of Fig. 13, the lower scribing line pointer 11o is shown as a black circle, the center of which is the position of the lower scribing line 31c. At this time, the upper scribing line pointer 11p and the lower scribing line pointer 11o are set to be positioned on the same horizontal line.

[0070] When the lower marking line pointer 11o is moved to the position of the lower marking line 31c, the distance between the center of the upper marking line pointer 11p and the center of the lower marking line pointer 11o, which are aligned on the same horizontal line, is measured as the amount of deviation from the state in which the lower marking line 31c and the upper marking line 32c are continuous, which were previously applied to the lower steel pipe column screw joint 31 and the upper steel pipe column screw joint 32 at the manufacturing factory by introducing the desired fitting torque, and this deviation amount is displayed on the photographed image 11a as the amount of deviation 11q.

[0071] At this time, the measuring unit 142 measures the distance between the upper scribing line pointer 11p and the lower scribing line pointer 11o based on the pixel data of the captured image 11a. For example, the storage means 13 pre-stores the actual width W of the area captured as the captured image 11a and the number of pixels X required to display an image of that width W in one horizontal raster of the display screen 11, and the value obtained by dividing the actual width W by the required number of pixels X is stored as the actual width displayed in one pixel. For example, if the actual width of the captured area is 200 mm and that width is displayed in 640 pixels, the actual width displayed in one pixel is stored as 0.313 mm (200 mm / 640 pixels). Note that if the attachment position of the imaging means 20 relative to the outer peripheral surfaces of the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 is set at a predetermined distance in advance and the range of the captured image is fixed, the actual width displayed in one pixel will always be constant. Therefore, only the actual width displayed in one pixel may be pre-stored in the storage means 13. In this case, the scale 33 does not need to be provided on the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32.

[0072] The measurement unit 142 detects the pixels of the upper scribing line pointer 11p and the lower scribing line pointer 11o from the data of one raster forming the horizontal line on which the upper scribing line pointer 11p and the lower scribing line pointer 11o are positioned in the displayed image, and counts the number of pixels between them. The value obtained by multiplying the counted number of pixels Y by the actual width (0.313 mm) displayed per pixel stored in the storage means 13 is displayed on the captured image 11a as the amount of left-right deviation between the upper scribing line 32c and the lower scribing line 31c.

[0073] Since the management system 5 is repeatedly used for each joining of a steel pipe column 1, when the management system 5 is started up, the actual width displayed in one pixel that was set when the immediately preceding steel pipe column 1 was joined remains stored. For this reason, the actual width displayed in one pixel may differ between the immediately preceding joining work and the current joining work. In such a case, the amount of deviation between the upper marking line 32c and the lower marking line 31c measured by the measuring unit 142 may differ from the amount of deviation that can be read from the scale 33 on the photographed image 11a displayed on the display screen 11.

[0074] In this case, the user opens the setting pop-up window 11h again, reads the amount of deviation using the scale 33 of the photographed image 11a in the "Measured Value" input field 11i, enters the read amount of deviation, and saves it. As a result, the input value is displayed on the display screen 11 as the amount of deviation.

[0075] Next, the operator clicks on the "Construction Record" tab 11f on the display screen 11. When the "Construction Record" tab 11f is clicked, a recording pop-up window 11r is displayed on the captured image 11a as shown in FIG. 14. The recording pop-up window 11r is provided with input fields 11s and 11t for inputting the "Column and Joint Number" and "Construction Date and Time," a "Start" button 11u for starting recording, an "End" button 11v for ending recording, and a "Close" button 11w for shutting down the system.

[0076] The operator first inputs information such as the number identifying the inverted support pillar that is the target of the joining work to be started and the number identifying the joint part of the inverted support pillar into the "Column and joint number" input field 11s in the recording pop-up window 11r. The "Construction date and time" input field 11t is preset so that the date and time are recorded using information from the clock means 12 of the information processing device 10.

[0077] Next, the operator clicks the "Start" button 11u to start recording. Meanwhile, the operator of the torque introducing device 30 introduces torque using the torque introducing device 30 to rotate the upper steel pipe column 1b. At this time, the torque introducing device 30 sends the introduced fitting torque value to the information processing device 10, and the information processing device 10 sequentially displays the torque values ​​sent from the torque introducing device 30 on the display screen 11, as shown in FIG. 15. The torque values ​​displayed at this time include the introduced maximum value 11x and the current value 11y, which is a value that has changed from the maximum value due to, for example, being pushed back slightly when the introducing operation is stopped.

[0078] In addition, the deviation amount 11q between the upper marking line 32c and the lower marking line 31c, which changes as the upper steel pipe column 1b is rotated, is measured by the measuring unit 142 and displayed on the display screen 11 successively.

[0079] In this way, by starting the management system 5 and introducing torque using the torque introducing device 30 to rotate the upper steel pipe column 1b, the deviation between the upper score line 32c and the lower score line 31c decreases, and the current value 11y of the fitting torque approaches the fitting torque at which the required strength is obtained. While recording is being performed in the management system 5, the image displayed on the display screen 11 at that time can be recorded by clicking the "Photo Recording" tab 11g. At this time, a sound (e.g., a shutter sound) is heard to notify the user of the captured image, and a screen display 11 such as that shown in FIG. 16 appears. Furthermore, the system is set to automatically record the image displayed on the display screen 11 at the start and end of recording.

[0080] After that, when the current value of the fitting torque reaches the desired fitting torque, the torque introducing device 30 is stopped, and the fitting of the upper steel pipe column 1b and the lower steel pipe column 1a is completed. The operator then clicks the "End" button 11v to stop recording. By operating the "End" button 11w, report data and photographs recording the continuously recorded fitting torque values ​​and deviation amounts in chronological order are saved in a specified folder in the storage means 13. At this time, a graph showing the correlation between fitting torque values ​​and deviation amounts, as shown in Figure 17, is also generated and saved. A management record sheet S, as shown in Figure 8, is also generated and saved in the same folder.

[0081] According to the steel pipe column fitting torque management system 5 and steel pipe column fitting torque management method of this embodiment, when fitting the upper steel pipe column threaded joint 32 to the lower steel pipe column threaded joint 31, the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 are photographed by the photographing device 20 together with the lower scribing line 31c, the upper scribing line 32c, the white portion 32d, and the green portion 32e. Then, based on the photographed photographed image 11a, the boundary detection unit 141 detects the boundary between the white portion 32d and the green portion 32e attached to the upper steel pipe column threaded joint 32 as the left-right position of the upper scribing line 32c, and an upper scribing line pointer 11p indicating the detected position is displayed on the display screen 11.

[0082] In this way, the position of the upper scoring line 32c is detected by the boundary detection unit 141 based on the photographed image 11a, so that the upper scoring line 32c that moves due to the rotation of the upper steel pipe column 1b is sequentially detected. Then, the amount of deviation from the position of the lower scoring line 31c of the lower steel pipe column 1a specified by the operation means 13 is measured by the measurement unit 142. In other words, because the amount of deviation between the upper scoring line 32c and the lower scoring line 31c is measured based on the photographed image 11a, there is no need to directly measure by placing a ruler or the like on the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32. For this reason, it is possible to safely and easily grasp the amount of deviation without approaching the joint between the upper and lower steel pipe columns 1 where a large torque is introduced.

[0083] Furthermore, the display screen 11 successively displays on the display image 11a the amount of misalignment measured by the measuring unit 142 as well as the mating torque value introduced by the torque introducing device 30. Therefore, on the display screen 11, it is possible to check the joining state of the lower steel pipe column threaded joint 31 and the upper steel pipe column threaded joint 32 in the photographed image 11a, while also checking the amount of misalignment between the upper scribing line 32c and the lower scribing line 31c at the time of photographing and the mating torque value.

[0084] Therefore, for example, the operator of the torque introducing device 30 can operate the torque introducing device 30 while visually checking the photographed image 11a on the display screen 11 and confirming the introduced fitting torque value and the measured amount of misalignment, to fit the upper steel pipe column threaded joint 32 into the lower steel pipe column threaded joint 31. Therefore, there is no need for confirmation work between the operator and the person checking, as is the case when the operator of the torque introducing device 30 and the person checking the amount of misalignment of the scribe lines 31c, 32c are different people, and so work can be carried out efficiently.

[0085] Furthermore, unlike when measuring the amount of deviation between the upper scribing line 32c and the lower scribing line 31c visually, there is no need to misread the scale or make a recording error, so it is possible to more accurately record the amount of deviation between the lower scribing line 31c and the upper scribing line 32c and the applied fitting torque value. Also, it is possible to more accurately and easily store and manage the amount of deviation between the lower scribing line 31c and the upper scribing line 32c and the applied fitting torque value at the multiple joints of each of the many upright reverse-drive supports.

[0086] The steel pipe column holding mechanism 200 and joining device 100 of the present invention are not limited to the above-described embodiment, and various modifications are possible within the scope of the present invention. In the above embodiment, an example was described in which the boundary between the white portion 32d and the green portion 32e located on both sides of the moving upper marking line 32c is detected by edge detection processing, but the method of detecting the upper marking line 32c is not limited to edge detection processing, and any method can be used as long as it is possible to detect the moving upper marking line 32c. [Explanation of symbols]

[0087] 1 steel pipe column 1a Lower steel pipe column (lower steel pipe column) 1b Upper steel pipe column (upper steel pipe column) 2 Steel pipe column body 3 Threaded joints 5. Steel pipe column fitting torque management system 10. Information processing equipment 11 Display screen 11a Photographed image 11b Header section 11c Camera Footage Tab 11d Analysis video tab 11e Settings tab 11f Construction Records Tab 11g Photo Record Pop-up window for 11h settings 11i Actual measurement value input field 11j Correction value input field 11k brightness input field 11l Calibration in progress checkbox 11m Horizon Display Checkbox 11n Save button 11o Bottom Ruler Pointer 11p Upper Ruled Line Pointer 11q Displacement 11r Recording pop-up window 11s Pillar number input field 11t Construction date and time input field 11u Start Button 11v Exit button 11w Close button 11x maximum mating torque 11y Current mating torque value 12 Clock means 13 Memory means 14 Image processing calculation unit 15 Operating means 16. Means of communication 17 Output Devices 20 Imaging equipment 21 Torque introduction fitting 22 Rotational torque receiving shear key 30 Torque introduction device (hydraulic unit) 31 Lower steel pipe column screw joint (female screw joint) 31a cylinder 31b Female thread 31c Lower crease (crease, lower mark) 32 Upper steel pipe column screw joint (male screw joint) 32a cylinder 32b Male thread part 32c Upper crease (crease, upper mark) 32d White part (colored part) 32e Green part (colored part) 33 scale 100 Joining equipment 110 Area specification frame 111 Horizontal line 112 Screen display 141 Boundary detection unit 142 Measurement section 142 Measurement section 143 Management Sheet Data Generation Unit 144 Display processing unit 200 Retention mechanism 201 Mounting base 210 Base stand 211 Insertion hole 220 Openable support stand 220a Split support stand 221 Inner surface 222 Switchgear 230 Support Piece 260 Rotational torque receiving bracket 300 Rotation Mechanism 301 Post 302 Expansion device (hydraulic jack) 303 Torque introduction gripping hardware 310 Telescopic control section 311 Operation section 320 Pressure Transducer H Underground trench B. Foundation concrete L Lifting device S Management Data Sheet

Claims

1. A fitting torque management system for steel pipe columns that manages the fitting torque when joining steel pipe columns having lower steel pipe column threaded joints and upper steel pipe column threaded joints at the upper end and lower end, The lower steel pipe column threaded joint and the upper steel pipe column threaded joint are each provided with a consecutive lower mark and an upper mark at the time when the desired fitting torque is introduced in advance, A photographing device that photographs the lower steel pipe column threaded joint and the upper steel pipe column threaded joint in a fitted state together with the lower mark and the upper mark; a torque introducing device that introduces the fitting torque while controlling it; an information processing device that acquires the applied fitting torque value and the amount of deviation between the lower mark and the upper mark, The information processing device includes: an image processing and calculation unit that detects the lower mark and the upper mark on a photographed image photographed by the photographing device; a measuring unit that measures the amount of deviation between the lower mark and the upper mark; a display processing unit that displays the fitting torque value introduced by the torque introducing device on the captured image together with the amount of deviation measured by the measurement unit; and A fitting torque management system for steel pipe poles, comprising:

2. The fitting torque management system for a steel pipe pole according to claim 1, A steel pipe column fitting torque management system characterized in that the image processing calculation unit detects the upper mark attached to the upper steel pipe column thread joint by edge detection processing of the colored portions with different shades on both sides of the mark.

3. The fitting torque management system for a steel pipe pole according to claim 1 or 2, The photographing device photographs continuously, The display processing unit has a display screen that displays the fitting torque value introduced by the torque introduction device and the deviation amount measured by the measurement unit together with the photographed image. A steel pipe column fitting torque management system.

4. The fitting torque management system for a steel pipe pole according to claim 1 or 2, The information processing device has an operation means, A steel pipe column fitting torque management system characterized by generating a management sheet that displays the captured image at the time when the operating means is operated, the fitting torque value at that time, and the amount of deviation measured by the measuring unit.

5. A method for managing a fitting torque of a steel pipe pole, characterized in that the fitting torque value of the steel pipe pole and the deviation amount between the lower mark and the upper mark are recorded using the fitting torque management system for a steel pipe pole according to claim 1.

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