JP7402782B2 - Inspection device - Google Patents

Description

The present invention relates to an inspection device equipped with an imaging means.

For example, inspection equipment equipped with an imaging means such as a camera is used to inspect structures such as bridges and roads, power distribution equipment on top of utility poles, internal equipment such as power plants and substations, and piping. (For example, see Patent Documents 1 to 5).

Special Publication No. 7-31167 Japanese Patent Application Publication No. 10-56711 Japanese Patent Application Publication No. 2007-330066 Utility model registration No. 3162050 JP 2019-13994 Publication

However, with conventional inspection devices, it is sometimes difficult to perform inspections efficiently, and there is still room for improvement in inspection devices equipped with imaging means.

In view of the above circumstances, it is a technical object of the present invention to provide an inspection device equipped with an imaging means that allows efficient inspection.

The inspection device according to the present invention, devised to solve the above problems, includes first and second rod-shaped parts arranged in parallel at a predetermined interval, and a first and second rod-shaped part on the same side of the first and second rod-shaped parts. a third rod-shaped portion having both ends connected to the end portion to form a first bent portion with the first rod-shaped portion and a second bent portion with the second rod-shaped portion; an imaging means attached to an end of the first rod-shaped part opposite to the first bent part, the imaging means configured to take an image of the object to be inspected to obtain image data, and transmit the image data by radio waves; a reflecting section that is attached to the section and reflects the radio waves emitted from the imaging means toward the second bending section; a telescoping mechanism that extends and contracts the first bar-shaped section; and a rotatable mechanism for the second bar-shaped section. The vehicle is characterized by having wheels attached to the vehicle.

According to this configuration, the first rod-shaped portion, the second rod-shaped portion, and the third rod-shaped portion have a U-shape. Therefore, even if there is an obstacle between the worker and the object to be inspected when the operator holds the second rod-shaped portion, the object to be inspected can be imaged by the imaging means attached to the first rod-shaped portion. It becomes easier.

Further, according to this configuration, the reflecting section reflects the radio waves emitted from the imaging means toward the second bent section, so that when the worker holds the second rod-shaped section, the operator and the inspection target Even if there are obstacles between objects, image data can be easily received near the worker.

Further, according to this configuration, since the first rod-shaped portion is expanded and contracted by the expansion and contraction mechanism, it becomes easy to image a wide range of the object to be inspected using the imaging means attached to the end of the first rod-shaped portion.

Moreover, according to this configuration, since the wheels are rotatably attached to the second rod-shaped part, it becomes easy to move the second rod-shaped part while supporting other members via the wheels.

Further, in the above configuration, the first rod-shaped portion may be pivotable about a pivot axis in a direction along the third rod-shaped portion.

With this configuration, it becomes easy to image the object to be inspected over a wide range with the imaging means attached to the end of the first rod-shaped portion.

Further, in the above configuration, the second rod-shaped portion may be rotatable about a rotation axis of a connecting portion with the third rod-shaped portion in a direction approaching the third rod-shaped portion.

With this configuration, by rotating the second rod-shaped portion in a direction approaching the third rod-shaped portion, it is possible to bring the second rod-shaped portion and the third rod-shaped portion into a folded state. If the second rod-shaped part and the third rod-shaped part are in a folded state, the inspection device can be used with the first rod-shaped part, the folded second rod-shaped part, and the third rod-shaped part forming an L-shape as a whole. .

According to the present invention, even if there is an obstacle between the worker and the object to be inspected, it is easy to image a wide range of the object to be inspected, and it is also easy to receive image data near the worker. Therefore, it is easy to move while supporting the inspection device. For these reasons, it is possible to provide an inspection device equipped with an imaging means that allows efficient inspection.

1 is a schematic front view of an inspection device according to an embodiment of the present invention. (A) is an enlarged view of part A in FIG. 1, (B) is a view taken along arrow F in (A), and (C) is a sectional view taken along line GG in (A). , (D) is a view taken along arrow H in (A). (A) is an enlarged view of part B in FIG. 1, (B) is a view in the direction of arrow I in (A), (C) is a view in direction of arrow J in (A), ) is a sectional view taken along line KK in (A). (A) is an enlarged view of section C in FIG. 1, and (B) is a view taken along arrow L in (A) (a front view of the reflective section). (A) is an enlarged view of section D in FIG. 1, (B) is a view taken along arrow M in (A), and (C) is a sectional view taken along arrow NN in (A). . (A) is an enlarged view of section E in FIG. 1, and (B) is a schematic vertical cross-sectional view of (A). FIG. 3 is a schematic diagram showing how to use the inspection device. FIG. 3 is a schematic diagram showing how to use the inspection device. FIG. 3 is a schematic diagram showing how to use the inspection device.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 are schematic diagrams of an inspection device according to an embodiment of the present invention. As shown in FIG. 1, this inspection device has first and second rod-shaped parts 1 and 2 arranged in parallel at a predetermined interval, and the same side of the first and second rod-shaped parts 1 and 2 (see FIG. 1, the third rod-shaped part 3 is provided with both ends 3a and 3b connected to the ends 1a and 2a (on the right side in FIG. 1). The first bent portion 4 is formed between the first rod portion 1 and the third rod portion 3 by connecting the end portion 1 a of the first rod portion 1 and the end portion 3 a of the third rod portion 3 . A second bent portion 5 is formed between the second rod portion 2 and the third rod portion 3 by connecting the end portion 2 a of the second rod portion 2 and the end portion 3 b of the third rod portion 3 . The first rod-shaped portion 1 and the third rod-shaped portion 3 form a right angle. Further, the second rod-shaped portion 2 and the third rod-shaped portion 3 form a right angle.

To be more specific, the end 1 a of the first rod-shaped part 1 and the end 3 a of the third rod-shaped part 3 are connected via the first joint part 6 . Further, the end portion 2a of the second rod-like portion 2 and the end portion 3b of the third rod-like portion 3 are connected via a second joint portion 7.

The shapes of the first, second, and third rod-shaped parts 1, 2, and 3 are not particularly limited, but in this embodiment, they are tubular (square pipes) with a rectangular (square) cross section. Further, the materials of the first, second and third rod-shaped parts 1, 2, and 3 are not particularly limited as long as they have enough rigidity to withstand use, but from the viewpoint of rigidity and weight reduction, The second and third rod-shaped parts 1, 2, and 3 are preferably made of aluminum.

The first rod-shaped portion 1 has a large diameter portion 1b connected to the first joint portion 6 and a small diameter portion 1c inserted into the large diameter portion 1b. In the state inserted into the large diameter part 1b, the small diameter part 1c is movable in the longitudinal direction with respect to the large diameter part 1b, whereby the first rod-shaped part 1 expands and contracts.

Furthermore, the inspection device includes an expansion and contraction mechanism that expands and contracts the first rod-shaped portion 1 in the longitudinal direction. The expansion and contraction mechanism is capable of expanding and contracting the first rod-shaped portion 1 during inspection. The expansion and contraction mechanism includes a coil spring 8a as an elastic body, a wire 8b as a wire, and a reel mechanism 8c.

The coil spring 8a is arranged within the large diameter portion 1b of the first rod-shaped portion 1. The end 1d of the small diameter portion 1c of the first rod-shaped portion 1 on the first joint portion 6 side is closed by a fixing member 1f fixed with a screw 1e, etc., and one end of the coil spring 8a is in contact with the fixing member 1f. are in contact with each other. The other end of the coil spring 8a is fixed to a portion of the large diameter portion 1b on the side of the end portion 1a. The small diameter portion 1c is biased by the coil spring 8a in the direction of protruding from the large diameter portion 1b.

One end of the wire 8b is fixed to the fixing member 1f, and thereby, one end of the wire 8b is fixed to the end 1d of the small diameter portion 1c. The wire 8b starts from the end 1d of the small diameter portion 1c, passes through the coil spring 8a, and then is passed around the first pulley 6a rotatably attached to the first joint portion 6, and then passed through the third rod-shaped portion. 3, is wound around a second pulley 7a which is rotatably attached to the outside of the second joint part 7, and is then wound up by a reel mechanism 8c.

The reel mechanism 8c is provided on the opposite side of the support portion 9 provided on the second rod portion 2 from the first rod portion 1. The reel mechanism 8c has a reel portion 8d for winding up the other end of the wire 8b, and a handle portion 8e for rotating the reel portion 8d. The handle portion 8e has a grip portion 8f that is gripped to rotate the handle portion 8e. The reel mechanism 8c can fix the wire 8b by fixing the reel part 8d. When the wire 8b is wound onto the reel portion 8d by gripping the gripping portion 8f and rotating the handle portion 8e, the small diameter portion 1c is moved toward the first joint portion 6 by the wire 8b. Thereby, the first rod-shaped portion 1 is reduced in the longitudinal direction. When the gripping part 8f is stopped and the handle part 8e is released without fixing the reel part 8d, the small diameter part 1c moves to protrude from the large diameter part 1b by the coil spring 8a. This causes the first rod-shaped portion 1 to extend in the longitudinal direction.

Further, the third rod-shaped portion 3 includes a proximal side portion 3c connected to the second joint portion 7, an intermediate portion 3d inserted into the proximal side portion 3c, and a first joint portion inserted into the intermediate portion 3d. It has a distal end side portion 3e connected to 6.

In the state inserted into the proximal side part 3c, the intermediate part 3d is movable in the longitudinal direction with respect to the proximal side part 3c, so that the third rod-shaped part 3 expands and contracts in the longitudinal direction. Moreover, in the state inserted into the intermediate part 3d, the distal end side part 3e is movable in the longitudinal direction with respect to the intermediate part 3d, whereby the third rod-shaped part 3 expands and contracts in the longitudinal direction.

Note that, before inspection, the distal side portion 3e is fixed to the intermediate portion 3d, and the intermediate portion 3d is fixed to the proximal side portion 3c by a locking mechanism (not shown). Thereby, the third rod-shaped portion 3 is set to a desired length before inspection.

The inspection device also includes an imaging means 10, a reflection section 11, and an image display means 12 such as a smartphone or a tablet. The imaging means 10 is attached to the end of the first rod-shaped portion 1 on the opposite side to the first bent portion 4 (the tip portion 1g). The imaging means 10 images the object to be inspected to obtain image data, and transmits the image data using radio waves W (see white arrow in FIG. 1). The imaging means 10 is not particularly limited as long as it can transmit the acquired image data by radio waves W, but a 360° camera is preferable from the viewpoint of being able to image a wide range of objects to be inspected. Further, the method of attaching the imaging means 10 to the first rod-shaped part 1 is not particularly limited as long as it can be fixed, but in this embodiment, the imaging means 10 is directly screwed to the first rod-shaped part 1.

The reflecting section 11 is attached to the first bending section 4 , receives radio waves W transmitted from the imaging means 10 to the first bending section 4 side, and receives the radio waves W emitted from the imaging means 10 to the side of the second bending section 5 . reflect. The image display means 12 receives image data using the radio waves W reflected by the reflecting section 11 and displays the image data.

The reflecting section 11 is not particularly limited as long as it can reflect the radio waves W, but in this embodiment, it is formed of an aluminum plate. A mounting member 11a is fixed to the reflecting portion 11, and is detachably attached to the first rod-shaped portion 1 and the third rod-shaped portion 3 via the mounting member 11a. In the illustrated example, the reflecting part 11 is attached so as to form an angle of 45° with respect to the first rod-shaped part 1 and the third rod-shaped part 3, but the radio wave W transmitted to the first bent part 4 side is The light is not limited to this as long as it can be reflected toward the bent portion 5 side.

The support part 9 is slidable in the longitudinal direction with respect to the second rod-shaped part 2, but is fixed at a desired position by a locking means (not shown) before inspection. A plurality of wheels 13 are rotatably attached to the support portion 9 on the side of the first rod-shaped portion 1 . In other words, the wheels 13 are rotatably attached to the second rod-shaped part 2 via the support part 9. The rotation center axis of the wheel 13 is a direction along the longitudinal direction of the second rod-shaped portion 2.

In this embodiment, two pairs of wheels 13 having a common rotating shaft 13a are arranged at the front and rear. In this case, when the wheels 13 rotate in contact with other members, it is possible to suppress vibrations in the front, rear, left and right directions.

When two pairs of wheels 13 are placed on a flat surface, the direction in which the support portion 9 moves due to the rotation of the two pairs of wheels 13 is a direction that intersects the longitudinal direction of the second rod-shaped portion 2, and the second rod-shaped This is a direction perpendicular to the longitudinal direction of the portion 2. Furthermore, in this case, the direction in which the support portion 9 moves due to the rotation of the wheels 13 is a direction that intersects with the longitudinal direction of the third rod-shaped portion 3 and a direction that intersects perpendicularly with the longitudinal direction of the second rod-shaped portion 2. It is.

The material of the wheels 13 is not particularly limited, but it is preferable that the wheels 13 be made of rubber in order to rotate without slipping when in contact with other members.

Both ends of a rope 14 are attached to the second joint portion 7 to prevent the inspection device from falling.

(In the state where the reflecting part 11 is removed) The first rotation axis 6b of the first joint part 6 (the connection part between the first rod-shaped part 1 and the third rod-shaped part 3) is rotated as shown by the arrow Y1. In addition, the first rod-shaped portion 1 is rotatable relative to the third rod-shaped portion 3. The first rotation shaft 6b extends in a direction perpendicular to the longitudinal direction of the first rod-shaped portion 1 and the longitudinal direction of the third rod-shaped portion 3.

Specifically, the first joint part 6 has a first part 6c to which the first rod-shaped part 1 is connected, and a second part 6d to which the third rod-shaped part 3 is connected. The second portion 6d is rotatably connected via the first rotation shaft 6b.

Centering around the second rotation axis 7b of the second joint part 7 (connection part between the second rod-shaped part 2 and the third rod-shaped part 3), the second rod-shaped part 2 is connected to the third rod-shaped part as shown by the arrow Y2. It is possible to rotate with respect to 3. The second rotation shaft 7b extends in a direction perpendicular to the longitudinal direction of the second rod-shaped portion 2 and the longitudinal direction of the third rod-shaped portion 3.

Specifically, the second joint part 7 has a first part 7c to which the second rod-shaped part 2 is connected, and a second part 7d to which the third rod-shaped part 3 is connected, and the first part 7c and the second part 7d are connected to each other. The second portion 7d is rotatably connected via the second rotation shaft 7b.

Furthermore, the second part 7d of the second joint part 7 includes a base part 7e connected to the first part 7c via a second rotation shaft 7b, and a rotating part 7f to which the end part 3b of the third rod-shaped part 3 is connected. has. The rotating portion 7f has a shaft portion 7h that fits into the hole 7g of the base portion 7e, and is rotatable relative to the base portion 7e by rotation of the shaft portion 7h relative to the hole 7g. Due to the rotation of the rotating portion 7f, the third rod-shaped portion 3 can rotate around its central axis, as shown by arrow Y3 in FIG. During the rotation of the third rod-like part 3, the first rod-like part 1 rotates together with the third rod-like part 3, so that the central axis of the third rod-like part 3 (the direction along the longitudinal direction of the third rod-like part 3) Rotate around the pivot axis). This 180° rotation of the first rod-shaped portion 1 allows the imaging means 10 to be placed at a position opposite to the third rod-shaped portion 3.

In addition, the first rod-like part 1 is removed with the reflective part 11 removed from the first and third rod-like parts 1 and 3, the third rod-like part 3 is reduced in the longitudinal direction, and the first rod-like part 1 is turned by 180 degrees. The third rod-shaped part 3 is rotated around the first rotation axis 6b in the direction approaching the third rod-shaped part 3, and the third rod-shaped part 3 is rotated around the second rotation axis 7b in the direction closer to the second rod-shaped part 2. As shown by the two-dot chain line in FIG. 1, the first, second, and third rod-shaped portions 3 can be folded. In this state, it is convenient to carry the inspection device.

Next, how to use the inspection device will be explained.

FIG. 7 shows how the power cable 16 installed on the back side (lower side) of the bridge 15 is inspected. The worker puts the rope 14 around his neck, grasps the second rod-shaped part 2, and places the wheels 13 of the support part 9 on the viewing part 15a of the bridge. While moving along the bridge, check the image data displayed on the image display means 12. By appropriately operating the reel mechanism 8c, the first rod-shaped portion 1 is expanded and contracted to move the imaging means 10.

FIG. 8 shows a situation when inspecting the power cable 16 arranged on the back side (lower side) of a bridge dedicated to power cables (dedicated bridge 17). Unlike the case of FIG. 7, in this case, the inspection device is used with the imaging means 10 placed at a position opposite to the third rod portion 3 due to the 180° rotation of the first rod portion 1. The other points are the same as those in FIG. 7, so the explanation will be omitted.

FIG. 9 shows how the power cable 16 installed in the manhole 18 is inspected. Unlike the cases shown in FIGS. 7 and 8, the second rod portion 2 is rotated with respect to the third rod portion 3, and the first rod portion 1 is is inserted into the manhole 18. In this case, by operating the reel mechanism 8c, the first rod-shaped portion 1 is expanded and contracted to move the imaging means 10, and the image data displayed on the image display means 12 is checked. Note that since the inside of the manhole 18 is dark, it is necessary to use a floodlight 19. In the illustrated example, a light projector 19 that is independent of the inspection device is used, but a light projector 19 attached to the first rod-shaped portion 1 may also be used.

The inspection device configured as described above can enjoy the following effects.

The first rod-shaped portion 1, the second rod-shaped portion 2, and the third rod-shaped portion 3 have a U-shape. Therefore, even if there is an obstacle between the worker and the object to be inspected when the operator holds the second rod-shaped portion 2, the object to be inspected can be imaged by the imaging means 10 attached to the first rod-shaped portion 1. It becomes easier to do so.

Further, since the reflecting section 11 reflects the radio waves W emitted from the imaging means 10 toward the second bent section 5 side, when the worker holds the second rod-shaped section 2, the worker and the object to be inspected are Even if there is an obstacle between them, the image display means 12 near the worker can easily receive the image data.

In addition, since the first rod-shaped portion 1 is expanded and contracted by the expansion and contraction mechanism, it becomes easy to image a wide range of the inspection object using the imaging means 10 attached to the distal end portion 1g of the first rod-shaped portion 1.

Moreover, since the wheels 13 are rotatably attached to the second rod-shaped part 2, it becomes easy to move the second rod-shaped part 2 while supporting it with respect to other members via the wheels 13.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea. For example, in the above embodiment, the power cables to be inspected were installed in a normal bridge, a special bridge, or inside a manhole, but they may be installed in other places such as inside a pit. It's okay.

In the above embodiment, the inspection target is the power cable, but it is also possible to inspect the structures themselves such as bridges, roads, and buildings, equipment located outdoors, and internal equipment such as power plants, substations, and factories. , piping, etc.

1 First rod-shaped part 1a End part 1g Tip part 2 Second rod-shaped part 2a End part 3 Third rod-shaped part 3a End part 3b End part 4 First bent part 5 Second bent part 6 First joint part 7 Second joint part 7b Rotating shaft 7f Rotating part 8a Coil spring (extension mechanism)
8b Wire (expanding mechanism)
8c Reel mechanism (telescopic mechanism)
9 Support part 10 Imaging means 11 Reflection part 12 Image display means 13 Wheel 13a Rotating shaft W Radio wave

Claims (3)

first and second rod-shaped parts arranged in parallel at a predetermined interval;
Both ends are connected to ends on the same side of the first and second rod-shaped parts, thereby forming a first bent part between the first rod-shaped part and a second bent part between the second rod-shaped part and the second rod-shaped part. a third rod-shaped portion forming a bent portion;
an imaging means attached to an end of the first rod-shaped part opposite to the first bending part, for imaging the inspection object to obtain image data, and transmitting the image data by radio waves;
a reflecting section attached to the first bending section and reflecting the radio waves transmitted from the imaging means toward the second bending section;
an expansion and contraction mechanism that expands and contracts the first rod-shaped portion;
An inspection device comprising: a wheel rotatably attached to the second rod-shaped portion. 2. The inspection device according to claim 1, wherein the first rod-shaped part is rotatable about a pivot axis in a direction along the third rod-shaped part. 3. The second rod-like part is rotatable in a direction approaching the third rod-like part about a rotation axis of a connecting part with the third rod-like part. inspection equipment.

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