Coating damage position detection device

Abstract

An object of the present disclosure is to provide a coating damaged position detection device that is easy to transport.SOLUTION: According to the present disclosure, there is provided a coating damage position detection device 1 including a carriage 10, a front wheel electrode 100 and a rear wheel electrode 200 provided side by side in a front-rear direction of the carriage 10, and a storage case 20 provided on an upper surface portion of the carriage 10 and storing at least a signal processing device and a battery, in which the carriage 10 is dividable into at least three parts in the front-rear direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a coating damage location device. [Background technology]

[0002] A technology has been disclosed relating to a coating damage position detection device (also referred to as a detection device) that detects from the ground the presence and location of damaged parts of the corrosion protection coating (hereinafter referred to as damaged parts) of underground buried objects that have corrosion protection coatings on their outer surfaces. For example, Patent Document 1 discloses a technique for detecting, from the ground surface, the location of damage to an anticorrosion coating applied to the outer surface of a metal pipe buried underground. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 7-52166 Summary of the Invention [Problem to be solved by the invention]

[0004] The invention of Patent Document 1 considers a detection device that is integrated with a lock-in amplifier, but such a detection device has the problem of being large and heavy, making it difficult to transport such a detection device to the measurement site.

[0005] The present disclosure has been made in consideration of the above circumstances, and has an object to provide a coating damage location detection device that is easy to carry. [Means for solving the problem]

[0006] The coating damage location detection device according to the present disclosure comprises: A trolley and front wheel electrodes and rear wheel electrodes arranged side by side in the front-rear direction of the bogie; a storage case provided on an upper surface of the carriage and configured to store at least a signal processing device and a battery; Equipped with The carriage can be divided into at least three sections in the front-rear direction. It is characterized by: [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a coating damage location detection device that is easy to carry. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view illustrating a coating damage location detection device according to an embodiment of the present disclosure, showing a state during use. [Figure 2] FIG. 1 is a perspective view illustrating a coating damage position detection device according to an embodiment of the present disclosure, showing a state in which a cover is removed from a carriage. [Figure 3] FIG. 1 is a perspective view illustrating a coating damage position detection device according to an embodiment of the present disclosure, showing a state in which a cover and a storage case are removed from a carriage. [Figure 4] FIG. 4 is a diagram for explaining a coating damage position detection device according to an embodiment of the present disclosure, and is a perspective view showing a state in which the bogie is divided into three parts from the state shown in FIG. 3. [Figure 5] FIG. 10 is a perspective view illustrating the fastening structure of a coating damage location detection device according to an embodiment of the present disclosure, showing the vicinity of a connecting portion of a rear frame. [Figure 6] FIG. 10 is a perspective view illustrating the fastening structure of a coating damage location detection device according to an embodiment of the present disclosure, showing the vicinity of a connecting portion of a central frame. [Figure 7] FIG. 10 is a perspective view illustrating a fastening structure of a coating damage location detection device according to an embodiment of the present disclosure, showing a state in which a rear frame and a center frame are arranged to face each other. [Figure 8] FIG. 10 is a perspective view illustrating a fastening structure of a coating damage location detection device according to an embodiment of the present disclosure, showing a state in which a rear frame and a center frame are connected together. [Figure 9]FIG. 1 is a perspective view illustrating a coating damage position detection device according to an embodiment of the present disclosure, showing a state in which a carriage is divided into three parts and each part is removed. [Figure 10] 1 is a diagram for explaining an overview of a coating damage location detection system using a coating damage location detection device according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described using examples, but it is clear that the present disclosure is not limited to the examples described below. In the following description, specific numerical values ​​and materials may be used as examples, but other numerical values ​​and materials may be used as long as the effects of the invention according to the present disclosure are obtained. Furthermore, the components of the following embodiments can be combined with each other. In addition, in this specification, a numerical range expressed using "to" means a range that includes the numerical values ​​before and after "to" as the lower and upper limits.

[0010] [First embodiment] Hereinafter, a coating damage location detection device according to an embodiment of the present disclosure will be described with reference to the drawings. The coating damage position detection device 1 according to this embodiment is a coating damage position detection device that detects the position of a coating damage portion in an underground buried object having an anticorrosion coating on its outer surface.

[0011] 1 is a diagram for explaining the coating damage location detection device 1 according to this embodiment, and is a perspective view showing the coating damage location detection device 1 in use. The coating damage location detection device 1 includes at least a carriage 10, a storage case 20, a cover 30, a front wheel electrode 100, and a rear wheel electrode 200.

[0012] FIG. 2 is a diagram for explaining the coating damage position detection device 1 according to this embodiment, and is a perspective view showing the coating damage position detection device 1 in a state where the cover 30 is removed from the carriage 10.

[0013] (cart) As shown in Fig. 1 etc., the coating damage position detection device 1 according to this embodiment includes a bogie 10. The bogie 10 has an elongated shape as a whole. The longitudinal direction of the bogie 10 is the front-rear direction of the bogie 10. The X coordinate axis in Fig. 1 etc. is parallel to the front-to-rear direction of the dolly 10, the Y coordinate axis is parallel to the left-to-right direction of the dolly 10, and the Z coordinate axis is parallel to the up-to-down direction of the dolly 10. The X coordinate axis, Y coordinate axis, and Z coordinate axis in Fig. 1 etc. are mutually orthogonal. That is, the front-to-rear direction, left-to-right direction, and up-to-down direction of the dolly 10 are also mutually orthogonal.

[0014] FIG. 3 is a diagram for explaining the coating damage position detection device 1 according to this embodiment, and is a perspective view showing the coating damage position detection device 1 in a state where the cover 30 and the storage case 20 are removed from the carriage 10. 3, even when the cover 30 and storage case 20 are removed, the device stored in the storage case 20 can be used as a coating damage location detection device by electrically connecting the device to the front wheel electrode 100, rear wheel electrode 200, and a laptop computer via cables (not shown). For example, the storage case 20 may be carried by a person.

[0015] In the coating damage position detection device 1 according to this embodiment, the bogie 10 can be divided into at least three sections in the front-rear direction. Specifically, the bogie 10 can be divided into a front section 10A, a rear section 10B, and a center section 10C.

[0016] The front section 10A of the bogie 10 includes a front frame 11 and a front wheel electrode 100. The rear section 10B of the bogie 10 includes a rear frame 12 and a rear wheel electrode 200.

[0017] The central portion 10C of the cart 10 includes a central frame 13. As will be described later, a storage case 20 is placed on the central frame 13, and the storage case 20 is fixed to the central frame 13. The central portion 10C of the cart 10 is provided with an attachment and a clamp lever (not shown) for attaching a cover 30, which will be described later.

[0018] It is preferable to ensure rigidity on the central frame 13 of the central portion 10C, since heavy objects such as a signal processing device and a battery are placed on it. Therefore, it is more preferable that the central frame 13 is a single member that is not divided. The front frame 11, the rear frame 12, and the central frame 13 are each a long member. The front frame 11, the rear frame 12, and the central frame 13 are connected in the fore-and-aft direction of the bogie 10. When the front frame 11, the rear frame 12, and the central frame 13 are connected in the fore-and-aft direction of the bogie 10, the fore-and-aft direction of the bogie 10 coincides with the longitudinal direction of the front frame 11, the rear frame 12, and the central frame 13. The up-and-down direction of the front frame 11, the rear frame 12, and the central frame 13 coincides with the up-and-down direction of the bogie 10.

[0019] Fig. 4 is a diagram for explaining the coating damage location detection device 1 according to this embodiment, and is a perspective view showing the state in which the bogie 10 is divided into a front section 10A, a rear section 10B, and a center section 10C from the state in Fig. 3. In the coating damage location detection device 1 according to this embodiment, the division of the bogie 10 can be implemented by the following structure.

[0020] (fastening structure) Each of the front frame 11, the rear frame 12, and the center frame 13 has a fastening structure at the joint between these frames. More preferably, the fastening structure includes a connecting fitting 710 provided on one of the connected frames, and a clamp lever 720 for fastening the connecting fitting 710. The connection between the front frame 11 and the central frame 13 is designated as FJ. The connection between the rear frame 12 and the central frame 13 is designated as RJ.

[0021] Fig. 5 shows an example of a rear section 10B equipped with a connecting fitting 710. As shown in Fig. 5, the connecting fitting 710 is provided on the connecting end 12e side of the rear frame 12. The connecting fitting 710 is arranged along the longitudinal direction of the rear frame 12 so as to protrude from the connecting end 12e of the rear frame 12. The connecting fitting 710 has an opening 711. The opening 711 is open in the direction in which the connecting fitting 710 protrudes from the connecting end 12e. 5, the connecting fitting 710 may be provided on the upper surface 12a side of the rear frame 12. Alternatively, the connecting fitting 710 may be provided on the lower surface 12b side of the rear frame 12.

[0022] An auxiliary connecting fitting 712 may be provided at the connecting end 12e of the rear frame 12. The auxiliary connecting fitting 712 is arranged along the longitudinal direction of the rear frame 12 so as to protrude from the connecting end 12e of the rear frame 12. 5, the auxiliary connecting fitting 712 may be provided on the side surface portion 12c of the rear frame 12. The auxiliary connecting fitting 712 makes it easy to position the rear frame 12 and the central frame 13 when they are fitted together.

[0023] The rear frame 12 may be a member having a rectangular cross section, as shown in Fig. 5. The upper surface portion 12a and the lower surface portion 12b of the rear frame 12 are arranged side by side in the up-down direction of the rear frame 12. The surfaces of the upper surface portion 12a and the lower surface portion 12b face each other. The side surface portions 12c of the rear frame 12 are arranged side by side in the left-right direction of the rear frame 12. The surfaces of the side surface portions 12c face each other.

[0024] 6 shows an example of a central portion 10C that includes a clamp lever 720 for fastening a connecting fitting 710. As shown in FIG. 6, the clamp lever 720 is provided on the connecting end 13e side of the central frame 13. The clamp lever 720 is arranged so that the axis of its shaft 721 faces the up-down direction of the central frame 13. As shown in FIG. 6, the shaft 721 of the clamp lever 720 is arranged so as to penetrate the upper surface 13a and the lower surface 13b of the central frame 13. The tip side of the shaft 721 is arranged on the lower surface 13b of the central frame 13. The shaft 721 of the clamp lever 720 is arranged at a position corresponding to the opening 711 of the connecting fitting 710.

[0025] A fastening ring 730 is connected to the shaft 721 of the clamp lever 720. The fastening ring 730 is a cylindrical member. The axis of the fastening ring 730 and the axis of the shaft 721 coincide with each other. The fastening ring 730 has a large diameter portion 731 and a small diameter portion 732. The small diameter portions 732 are arranged on both sides of the large diameter portion 731 in the direction along the axis of the fastening ring 730. The diameter of the large diameter portion 731 is larger than the width of the opening 711 of the connecting fitting 710 (the width of the rear frame 12 in the left-right direction). The diameter of the small diameter portion 732 is smaller than the width of the opening 711 of the connecting fitting 710. The height of the small diameter portion 732 along the shaft portion 721 is smaller than the thickness of the connecting fitting 710. The fastening ring 730 is arranged between the upper surface portion 13a and the lower surface portion 13b of the central frame 13 in the up-down direction of the central frame 13.

[0026] As shown in Fig. 5, the central frame 13 may be a member having a rectangular cross section. The upper surface portion 13a and the lower surface portion 13b of the central frame 13 are arranged side by side in the up-down direction of the central frame 13. The surfaces of the upper surface portion 13a and the lower surface portion 13b face each other. The side surface portions 13c of the central frame 13 are arranged side by side in the left-right direction of the central frame 13. The surfaces of the side surface portions 13c face each other.

[0027] In the example of Figure 6, the lever portion 722 of the clamp lever 720 is arranged on the upper surface portion 13a side of the central frame 13, but this is not limited to this, and the lever portion 722 may also be arranged on the lower surface portion 13b side of the central frame 13.

[0028] The shaft portion 721 has a screw thread (male screw portion). Furthermore, the upper surface portion 13a of the central frame 13 is formed with a hole portion having a screw thread (female screw portion) that corresponds to the screw thread of the shaft portion 721. By gripping the lever portion 722 of the clamp lever 720 and rotating the clamp lever 720 around the shaft portion 721, the clamp lever 720 moves along the axis of the shaft portion 721 relative to the central frame 13. Therefore, together with the movement of the clamp lever 720, the fastening ring 730 also moves along the axis of the shaft portion 721 relative to the central frame 13. In other words, by rotating the clamp lever 720, the distance between the upper surface portion 13a of the central frame 13 and the fastening ring 730 changes.

[0029] (Snap lock) In the coating damage location detection device 1 of this embodiment, it is more preferable that a snap lock 800 be further provided at the connection portion FJ between the front frame 11 and the central frame 13, or at the connection portion RJ between the rear frame 12 and the central frame 13.

[0030] The snap lock 800 is not particularly limited as long as it can secure the connected frames to each other. A general snap lock can be used as the snap lock 800. For example, as shown in FIGS. 7 and 8, the snap lock 800 is divided into a portion 810 and a portion 820. The portion 810 includes a lever 811 and a hook 812 connected to the lever 811. The portion 820 includes a protrusion 821. In the examples shown in FIGS. 7 and 8, the portion 810 is provided on the central frame 13, and the portion 820 is provided on the rear frame 12. However, the portion 810 may be provided on the rear frame 12, and the portion 820 may be provided on the central frame 13. When connecting the central frame 13 to the front frame 11 or the rear frame 12, the lever 811 is operated to engage the hook 812 with the protrusion 821, thereby fixing the part 810 and the part 820 to each other.

[0031] The snap lock 800 prevents the frame from coming off. It is more preferable that the snap lock 800 is disposed on the side of the frame at the connecting portion. Also, the portion 810 may have an adjuster mechanism for adjusting the position of the lever 811. The adjuster mechanism allows adjustment of the interference.

[0032] Fixation using the above-described fastening ring 730 and snap lock 800 does not require bolts, nuts, etc., so no tools are required for connecting or separating the frames. Furthermore, fixation using the above-described fastening ring 730 and snap lock 800 can also ensure the strength of the trolley 10.

[0033] The connection between the rear frame 12 and the central frame 13 will be described with reference to FIGS. For example, when transporting the coating damage location detection device 1, the bogie 10 is divided into a front section 10A, a rear section 10B, and a center section 10C. When using the coating damage location detection device 1, the front section 10A, the rear section 10B, and the center section 10C are connected to assemble the bogie 10. That is, the front frame 11, the rear frame 12, and the center frame 13 are connected.

[0034] When connecting the rear frame 12 and the central frame 13, the connecting end 12e of the rear frame 12 and the connecting end 13e of the central frame 13 are opposed to each other at the connecting portion RJ, as shown in Figure 7. Then, the rear frame 12 and the central frame 13 are brought close to each other in the longitudinal direction, and the connecting fitting 710 on the rear frame 12 side is inserted into the central frame 13. At this time, the small diameter portion 732 of the fastening ring 730 is inserted into the opening 711 of the connecting fitting 710.

[0035] 8 shows a state in which the connecting fitting 710 on the rear frame 12 side is inserted inside the central frame 13. In this state, by rotating the clamp lever 720, the distance between the upper surface 13a of the central frame 13 and the fastening ring 730 changes, and the connecting fitting 710 can be fastened between the upper surface 13a of the central frame 13 and the large diameter portion 731 of the fastening ring 730. The relationship between the rotation direction of the clamp lever 720 and the change in the distance between the upper surface 13a of the central frame 13 and the fastening ring 730 depends on the direction of the threads on the shaft 721. If the threads are generally clockwise, rotating the clamp lever 720 counterclockwise reduces the distance between the upper surface 13a and the fastening ring 730.

[0036] Furthermore, by further tightening the snap lock 800, it is possible to prevent the frame from coming loose in the longitudinal direction.

[0037] The fastening structure at the connection portion RJ between the rear frame 12 and the central frame 13 has been described, but a similar fastening structure may also be provided at the connection portion FJ between the front frame 11 and the central frame 13. In the example of this embodiment, an example has been described in which the connecting fitting 710 is provided on the rear frame 12 side and the clamp lever 720 is provided on the central frame 13 side, but this is not limited to this, and the connecting fitting 710 may be provided on the central frame 13 side and the corresponding clamp lever 720 may be provided on the rear frame 12 side.

[0038] As described above, the bogie 10 can be divided into at least three parts in the front-rear direction. However, the number of parts that can be divided is not limited to three, and the bogie 10 may be divided into four, five, or more parts in the front-rear direction.

[0039] (storage case) As shown in FIG. 2, the coating damage position detecting device 1 according to this embodiment includes a storage case 20 provided on an upper surface 13a of a central frame 13 that constitutes the carriage 10. The storage case 20 can accommodate at least a signal processing device (not shown), a battery (not shown), and other tools, etc. The devices stored in the storage case 20 are electrically connected to the front wheel electrode 100, the rear wheel electrode 200, and a laptop computer by cables (not shown).

[0040] Furthermore, in the coating damage position detection device 1 according to this embodiment, the storage case 20 may be detachable from the carriage. The storage case 20 may be detachable from the carriage 10, for example, by an index plunger 23. The carriage 10 and the storage case 20 may be attached by a method other than the index plunger 23. A structure that allows the storage case 20 to be attached to the carriage 10 without using tools is preferred. By removing the storage case 20 from the carriage 10, the center of gravity of the coating damage location detection device 1 is lowered, ensuring operability in terrain that requires mobility, such as mountainous areas. The storage case 20 removed from the carriage 10 may be carried by the operator or another person.

[0041] (cover) The coating damage position detection device 1 according to this embodiment includes a cover 30 that covers the storage case 20. In the coating damage position detection device 1 according to this embodiment, the cover 30 is detachable from the carriage 10.

[0042] By removing the cover 30 from the bogie 10, the coating damage location detection device 1 itself becomes lighter, ensuring operability in terrain that requires mobility, such as mountainous areas. On the other hand, the cover 30 also has the advantage of allowing necessary drawings and tools to be placed on it, so the cover 30 can be left attached on flat ground. 1 and the like, the cover 30 is provided so as to cover the storage case 20 and a portion of the dolly 10. However, the cover 30 may be configured to cover the entire dolly 10.

[0043] (Wheel electrode) The coating damage position detection device 1 according to this embodiment includes a front wheel electrode 100 and a rear wheel electrode 200 arranged side by side in the front-rear direction of the bogie 10.

[0044] As shown in FIG. 3 etc., the front wheel electrode 100 is provided in the front section 10A that constitutes the bogie 10. That is, the front wheel electrode 100 is arranged on the front side in the fore-and-aft direction of the bogie 10. The front wheel electrode 100 is supported by a front wheel support section 110. The upper side of the front wheel support section 110 in the vertical direction is connected to the front frame 11 of the front section 10A. The lower side of the front wheel support section 110 in the vertical direction is provided with a hole section (not shown) through which an axle (not shown) of the front wheel electrode 100 is inserted. The front wheel electrode 100 is supported via this axle. The front wheel electrode 100 is supported by the axle relative to the front wheel support section 110 so as to be rotatable around the axle.

[0045] As shown in FIG. 3 etc., the rear wheel electrode 200 is provided in the rear section 10B that constitutes the bogie 10. That is, the rear wheel electrode 200 is arranged on the rear side in the fore-and-aft direction of the bogie 10. In other words, the rear wheel electrode 200 is arranged on the rear side of the front wheel electrode 100 in the fore-and-aft direction of the bogie 10. The rear wheel electrode 200 is supported by a rear wheel support section 210. The upper side of the rear wheel support section 210 in the vertical direction is connected to the rear frame 12 of the rear section 10B. The lower side of the rear wheel support section 210 in the vertical direction is provided with a hole section (not shown) through which an axle (not shown) of the rear wheel electrode 200 is inserted. The rear wheel electrode 200 is supported via this axle. The rear wheel electrode 200 is supported by the axle with respect to the rear wheel support section 210 so as to be rotatable around the axle.

[0046] The front wheel electrodes 100 and the rear wheel electrodes 200 may be configured, for example, by six wheels arranged side by side in the direction along the respective axles, with a space between them provided by spacers or the like. The front wheel electrode 100 and the rear wheel electrode 200 are preferably made of, for example, conductive sponge rubber wheels.

[0047] By providing the front wheel electrode 100 and the rear wheel electrode 200, it is possible to detect the potential difference between the potential detected by one wheel electrode and the potential detected by the other wheel electrode.

[0048] In the coating damage position detecting device 1 according to this embodiment, it is more preferable that a handle 40 is further provided on the upper surface portion 11a of the front frame 11 of the carriage . Even on a ground surface such as a gravel road that may make the coating damage position detection device 1 unstable, the handle 40 can be grasped to hold the coating damage position detection device 1 so that it does not lift off the ground. Furthermore, when going over uneven ground or bumps, the handle 40 can be held to lift the coating damage position detection device 1. Furthermore, by changing the orientation of the coating damage position detection device 1 using the rear wheel electrode 200 as a fulcrum, the coating damage position detection device 1 can be easily turned and changed direction.

[0049] The handle 40 may also be detachable from the bogie 10. The handle 40 is preferably attached to the top surface 10a of the bogie 10 by a joining means such as a bolt. By making the handle 40 detachable, the handle 40 can be replaced. This allows the height of the grip 41 of the handle 40 to be changed depending on the height of the operator of the coating damage position detection device 1. Furthermore, on slopes with inclines, workability can be improved by appropriately selecting a handle 40 at a height that makes it easy to lift the bogie 10.

[0050] In the coating damage location detection device 1 according to this embodiment, it is more preferable that a safety belt attachment fitting 51 is provided in front of the bogie 10. Also, in the coating damage location detection device 1 according to this embodiment, it is more preferable that a safety belt attachment fitting 52 is provided in the rear of the bogie 10. In the example of FIG. 1 etc., a safety belt attachment fitting 51 is provided at the front end 10f of the dolly 10, and a safety belt attachment fitting 52 is provided at the rear end 10r.

[0051] A safety belt (lifeline) can be attached to the safety belt attachment fittings 51 and 52. For example, when the coating damage position detection device 1 is driven on a steep slope or mountain path, one side of the safety belt can be attached to the safety belt attachment fittings 51 and / or 52 of the coating damage position detection device 1, and the other side of the safety belt can be attached to the safety belt main net. The safety belt attachment fitting 51 and / or the safety belt attachment fitting 52 may be attached to the safety belt via a harness or the like. This makes it possible to prevent accidents such as the coating damage position detection device 1 falling off or dropping.

[0052] An operating handle 50 is provided on the rear side of the carriage 10. By gripping and operating the operating handle 50, the operator of the coating damage location detection device 1 can move the coating damage location detection device 1 forward or backward in the forward or backward direction, or make it turn left or right. The operating handle 50 may be detachable from the cart 10. Being able to detach the operating handle 50 from the cart 10 has the advantage of making it easier to transport.

[0053] The dolly 10 is provided with a platform 60. On the platform 60, a laptop computer 61, a display, or other devices may be placed. The mounting base 60 may be detachable from the cart 10. The ability to detach the mounting base 60 from the cart 10 has the advantage of making it easier to transport.

[0054] The coating damage position detection device 1 according to this embodiment may further include a pair of auxiliary wheels 310 at the front of the bogie 10 and a pair of auxiliary wheels 320 at the rear of the bogie 10. However, the coating damage position detection device 1 does not necessarily have to include auxiliary wheels. In other words, the coating damage position detection device 1 may be configured to travel using the front wheel electrodes 100 and the rear wheel electrodes 200. The auxiliary wheels 310 and 320 are connected to the cart 10 via auxiliary wheel support parts 311 and 321, respectively. The auxiliary wheel support parts 311 and 321 may be provided with springs 312 and 322. The action of the springs allows stable movement even when the ground is uneven.

[0055] It is more preferable that the pair of training wheels 310 and 320 are detachable from the cart 10. By making the training wheels 310 and 320 detachable, it is possible to select whether or not to use the training wheels depending on the situation at the work site. The training wheels 310 and 320 are preferably attached to the side of the cart 10 by a clamp bar or the like. In other words, it is preferable that a means for attaching and detaching the training wheels 310 and 320 to the cart 10 without using tools is provided on the upper side of the wheels 310 and 320.

[0056] The coating damage position detection device 1 according to this embodiment can be divided into each part as shown in FIG. Conventional inspection devices are heavy, so a dedicated vehicle (vehicle with a lifter) is required to transport them to the work site. However, with the coating damage location detection device 1 according to this embodiment, the device can be separated into individual sections, making it lighter and enabling it to be transported without a dedicated vehicle. In addition, since it is possible to transport each section in small lots, it can be easily sent to distant locations or mountainous areas.

[0057] (Coating damage location detection system) The coating damage position detection device 1 according to the above-described embodiment can detect the position of a damaged portion of an underground object having an anticorrosion coating on its outer surface. The underground object is, for example, a buried pipe. The underground object may also be, for example, a metal pipe such as a steel pipe.

[0058] The coating damage location detection device 1 may be used as part of a coating damage location detection system. As shown in FIG. 10, for example, a coating damage location detection system 1000 includes a coating damage location detection device 1 and a measurement signal generator 2.

[0059] In the coating damage location detection system 1000, an AC voltage is applied between the underground buried object b and a counter electrode 22 placed underground (inside the soil) using a measurement signal transmitter 2, and an AC current is passed through. The potential difference on the ground surface between the two points generated by the measurement signal transmitter 2 is detected by the front wheel electrode 100 and rear wheel electrode 200 of the coating damage location detection device 1, which moves along the underground buried object b on the ground directly above the underground buried object b.

[0060] For example, if there is a damaged area bs in an underground buried object b, a current I flows into the underground buried object b through the damaged area bs. This causes a potential difference around the damaged area bs. The potential difference on the ground surface thus generated is detected by the coating damage location detection device 1.

[0061] As explained in the above embodiment, the coating damage position detection device 1 detects the potential difference on the ground surface by the front wheel electrode 100 and the rear wheel electrode 200. The coating damage location detection device 1 continuously detects the potential difference on the ground surface while moving along the underground buried object b on the ground directly above the underground buried object b via the front wheel electrodes 100 and the rear wheel electrodes 200. In detail, the operator moves the coating damage location detection device 1 along the underground buried object b on the ground above the underground buried object b, and the front wheel electrodes 100 and the rear wheel electrodes 200 of the coating damage location detection device 1 detect the potential difference between two points on the ground surface as a detection signal.

[0062] The detected potential difference is input as a signal to a signal processing device mounted on the main body, processed by the signal processing device, and then output as information such as a waveform to a display device.

[0063] It should be noted that the technical scope of the present disclosure is not limited to the above-described embodiments, and it is obvious that various modifications can be made without departing from the spirit of the present disclosure. Within the scope of the present disclosure, the components in the above embodiments may be replaced with well-known components as appropriate, and the above modifications may be combined with the above embodiments as appropriate.

[0064] (Addendum) The coating damage position detection device according to the above embodiment can be understood, for example, as follows. (1) A coating damage location detection device according to one aspect of the present disclosure includes: A trolley and front wheel electrodes and rear wheel electrodes arranged side by side in the front-rear direction of the bogie; a storage case provided on an upper surface of the carriage and configured to store at least a signal processing device and a battery; Equipped with The carriage can be divided into at least three sections in the front-rear direction. It is characterized by: The coating damage position detection device having the above configuration is easy to transport.

[0065] (2) In the coating damage location detection device described in (1) above, The carriage is a front section including the front wheel electrodes; a rear portion including the rear wheel electrodes; and a central portion that is located between the front portion and the rear portion in the front-rear direction and includes the storage case.

[0066] (3) In the coating damage location detection device described in (2) above, the central section includes a central frame, the forward section includes a forward frame, and the rear section includes a rear frame; the central frame and the front frame, and the central frame and the rear frame can be connected to each other by fastening structures provided at connection portions between the frames, The fastening structure may include a metal fitting and a clamp lever for fastening the metal fitting.

[0067] (4) In the coating damage location detection device described in (3) above, The connecting portion may further include a snap lock.

[0068] (5) In the coating damage location detection device according to any one of (1) to (4), The front wheel electrode and the rear wheel electrode may detect a potential difference on the ground surface by moving along the underground buried object on the ground surface directly above the underground buried object. [Industrial Applicability]

[0069] The coating damage location detection device according to the present disclosure is easy to transport because the carriage can be separated into at least three sections, making the invention according to the present disclosure extremely useful in industry. [Explanation of symbols]

[0070] 1. Coating damage location detection device 10 carts 10A front part 10B Rear part 10C central part 20 Storage Case 30 Cover 100 front wheel electrode 200 Rear wheel electrode 310, 320 training wheels

Claims

1. A trolley and front wheel electrodes and rear wheel electrodes arranged side by side in the front-rear direction of the bogie; a storage case provided on an upper surface of the carriage and configured to store at least a signal processing device and a battery; Equipped with The carriage can be divided into at least three sections in the front-rear direction. A coating damage location detection device characterized by:

2. The carriage is a front section including the front wheel electrodes; a rear portion including the rear wheel electrodes; a central portion located between the front portion and the rear portion in the front-rear direction and including the storage case; 2. The coating damage location detection device according to claim 1.

3. the central section includes a central frame, the forward section includes a forward frame, and the rear section includes a rear frame; the central frame and the front frame, and the central frame and the rear frame can be connected to each other by fastening structures provided at connection portions between the frames, The fastening structure includes a connecting fitting and a clamp lever for fastening the connecting fitting.

3. The coating damage location detection device according to claim 2.

4. The connection portion further includes a snap lock.

4. The coating damage location detection device according to claim 3.

5. the front wheel electrodes and the rear wheel electrodes move along the underground buried object on the ground surface directly above the underground buried object to detect a potential difference on the ground surface.

5. The coating damage location detection device according to claim 1, wherein the coating damage location detection device is a coating damage detection device.

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