JP7322641B2 - Underwater photography device and underwater photography method - Google Patents

Description

The present invention relates to an underwater photographing apparatus and an underwater photographing method for photographing an object underwater.

In order to inspect the inside of pipes such as joints of steel pipe sheet piles, after inserting a transparent balloon containing a camera into the pipe to a predetermined depth, the balloon is filled with water and inflated to remove muddy water around the camera. A technique for removing turbid water has been proposed (see, for example, Patent Document 1). According to Patent Document 1, underwater imaging can be performed without being affected by muddy water.

JP 2005-201717 A

However, in an environment filled with muddy water, such as muddy water, obstacles in muddy water cannot be seen visually, so the camera may come into contact with obstacles in the process of guiding the camera to the shooting location, and the camera, which is a precision component, may become damaged. There was a risk of damage.

In particular, in the muddy water shield construction method, when underwater photography is performed in a chamber filled with muddy water (turbid water) in order to check the cutter, etc., the partition wall is used. In this case, the camera is inserted after opening the stopcock of the pipe provided on the partition wall, but it is difficult to insert the camera while considering the stoppage of water.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides an underwater photographing apparatus and an underwater photographing method that solve the above-described problems and can safely guide an underwater camera to a photographing location even in an environment filled with turbid water. to provide.

An underwater photographing apparatus of the present invention is an underwater photographing apparatus for photographing underwater with an underwater camera, comprising: a rod section to which the underwater camera is fixed at a front end; a cylindrical cover section covering the underwater camera; and the cover section. and a water injection port formed on the peripheral surface of the cover portion, which is attached to the inner periphery of the cover portion on the rear side of the water injection port, supports the rod portion so as to be movable in the front-rear direction, and is attached to the inner periphery of the cover portion. A fresh water stop packing interposed between the outer periphery of the rod portion and stopping fresh water injected from the water inlet, and a balloon attached to close the opening at the front end of the cover portion. and moving the rod portion in the front-rear direction relative to the cover portion to obtain a housed state in which the entire underwater camera is housed in the hollow portion of the cover portion, and a state in which the underwater camera is entirely housed in the hollow portion of the cover portion. It is characterized by being switchable between a protruding state in which a part or the whole protrudes from the front end of the cover part.
Further, in the underwater photographing apparatus of the present invention, the cover may be provided with a nozzle for injecting fresh water injected from the water inlet toward the photographed location.
Further, the medium photographing device of the present invention is an underwater photographing device for photographing underwater with an underwater camera, comprising: a rod portion having the underwater camera fixed to a front end thereof; a cylindrical cover portion covering the underwater camera; A water injection port formed on the peripheral surface of the cover portion and a water injection port attached to the inner periphery of the cover portion on the rear side of the water injection port to support the rod portion so as to be movable in the front-rear direction, and to support the rod portion inside the cover portion. A fresh water stop packing interposed between the circumference and the outer circumference of the rod portion to stop fresh water injected from the water inlet, and a balloon attached so as to block the opening at the front end of the cover portion. The balloon is provided with an opening through which fresh water injected from the water inlet is injected toward the photographed location.
Further, an underwater photographing method of the present invention includes a rod portion having an underwater camera fixed to its front end, a cylindrical cover portion covering the underwater camera, a water inlet formed on the peripheral surface of the cover portion, and the It is attached to the inner periphery of the cover portion on the rear side of the water inlet, supports the rod portion so as to be movable in the front-rear direction, and is interposed between the inner periphery of the cover portion and the outer periphery of the rod portion. An underwater photographing device for photographing underwater with the underwater camera, comprising: a fresh water stop packing for stopping fresh water injected from the water inlet; An underwater photographing method for photographing the inside of a chamber of a slurry shield excavator using the underwater photographing device, wherein the underwater photographing device is inserted into a pipe arranged through a bulkhead and water is stopped by a stopcock. a connection step of connecting an insertion extension pipe having a possible opening and having a muddy water stop packing interposed between the cover portion and the outer periphery to stop muddy water in the chamber attached to the inner periphery; After inserting the underwater photography device into the insertion extension pipe from the front end side, an insertion step of opening the stop cock, and a moving step of moving the front end of the underwater photography device into the chamber via the pipe. and a water injection step of inflating the balloon by injecting fresh water from the water injection port and bringing the balloon into contact with the imaging location.

According to the present invention, since the underwater camera can be moved while covered with the cover, it is possible to safely guide the underwater camera 3 to the photographing location even in an environment filled with muddy water.

1 is a side sectional view showing a configuration example of an underwater photographing device according to the present invention; FIG. FIG. 2 is an explanatory diagram illustrating an example of photographing a side wall by the underwater photographing device shown in FIG. 1; FIG. 2 is an explanatory diagram for explaining an example of photographing of the bottom part of the water by the underwater photographing device shown in FIG. 1; FIG. 2 is an explanatory diagram for explaining an example of photographing inside a chamber by the underwater photographing device shown in FIG. 1; FIG. 2 is an explanatory diagram for explaining an example of photographing inside a chamber by the underwater photographing device shown in FIG. 1; FIG. 4 is a side cross-sectional view showing another configuration example of the underwater photographing device according to the present invention;

Next, modes for carrying out the present invention (hereinafter simply referred to as "embodiments") will be specifically described with reference to the drawings.
An underwater photographing apparatus 1 of this embodiment includes a rod portion 2, an underwater camera 3, a cover portion 4, a waterproof packing 5, and a balloon 6, as shown in FIG. In FIG. 1, (a) shows the underwater photographing device 1 during movement to a photographing location, and (b) shows the underwater photographing device 1 during photographing.

An underwater camera 3 is fixed to the front end of the rod portion 2 . The rod part 2 is a pipe member having a hollow part such as a steel pipe or a fiber pipe having an axial strength capable of integrating the fixed underwater camera 3 and moving in the front-rear direction (axial direction). A cable 7 used for supplying electric power to the underwater camera 3 and transmitting video signals output from the underwater camera 3 is wired in the hollow portion of the rod portion 2 .

The underwater camera 3 is a video camera or still camera having a waterproof structure. The underwater camera 3 is configured to have a size that can be accommodated in the hollow portion of the cover portion 4 with a gap from the inner peripheral surface of the cover portion 4 . In addition, a space retaining member such as a center riser for securing a space between the underwater camera 3 and the inner peripheral surface of the cover portion 4 may be provided. In this case, it is provided on the underwater camera 3 and the rod portion 2 so that contact between the underwater camera 3 and the inner peripheral surface of the cover portion 4 can be prevented.

The cover part 4 is a cylinder that covers the underwater camera 3, and has a waterproof packing 5 attached to the inner circumference of the rear end side, and a balloon 6 attached to close the opening of the front end. For example, the mouth of the balloon 6 can be covered so as to cover the front end opening of the cover part 4 and attached with a ring-shaped binding tool such as a binding belt. Note that the cover portion 4 may have a polygonal tubular shape, an elliptical tubular shape, or the like as long as it has a tubular shape that covers the underwater camera 3, and the cross-sectional shape is not limited.

A water injection port 41 is formed on the peripheral surface of the cover portion 4 on the front side of the mounting position of the water stop packing 5 . Therefore, by injecting fresh water from the water inlet 41 into the hollow portion of the cover portion 4, the balloon 6 attached to the front end opening of the cover portion 4 can be inflated as shown in FIG. 1(b). . The balloon 6 is made of a material (for example, latex or a special transparent film) having such a degree of transparency that even if it is inflated and interposed between the shooting location and the underwater camera 3, it will not hinder shooting. .

The waterproof packing 5 has a donut shape with an opening into which the rod portion 2 can be inserted, and is interposed between the inner peripheral surface of the cover portion 4 and the outer peripheral surface of the rod portion 2, and the rear end side of the cover portion 4. It functions as a rod supporting portion that stops water and supports the rod portion 2 so as to be movable in the front-rear direction. Therefore, by moving the rod portion 2 relative to the cover portion 4 in the front-rear direction, the entire underwater camera 3 is accommodated in the hollow portion of the cover portion 4 as shown in FIG. 1(a). 1(b), and a protruding state in which part or all of the front side of the underwater camera 3 protrudes from the cover portion 4, as shown in FIG. 1(b).

Next, a method of photographing in muddy water using the underwater photographing device 1 will be described in detail with reference to FIGS. 2 and 3. FIG. FIG. 2 shows an example of photography of the side wall, and FIG. 3 shows an example of photography of the bottom of the water. In the present embodiment, turbid water is water that is so transparent that intervening between the shooting location and the underwater camera 3 interferes with shooting. The water is so transparent that it does not interfere with photography even if it is interposed between them.

First, as shown in FIGS. 2(a) and 3(a), the front end of the underwater photographing device 1 in the accommodated state is submerged in muddy water, and the front end to which the balloon 6 is attached is moved to the vicinity of the photographing location. Since the entire underwater camera 3 is housed in the hollow portion of the cover portion 4 in the housed state, the underwater camera 3 is prevented from coming into contact with obstacles. It should be noted that the water injection port 41 should be open during movement to the photographing location. In this case, the balloon 6 is deflated by the water pressure and pushed into the front end opening of the cover part 4, thereby preventing the balloon 6 from coming into contact with obstacles in the muddy water.

Next, by injecting fresh water from the water inlet 41 into the hollow portion of the cover portion 4, the balloon 6 is inflated and the balloon 6 is inflated as shown in FIGS. abut on.

Next, the rod portion 2 is moved forward relative to the cover portion 4 to switch to a projecting state in which part or all of the front side of the underwater camera 3 projects from the cover portion 4 . In the protruded state, part or all of the front side of the underwater camera 3 protrudes from the cover part 4, and a wide range can be photographed. There is no particular restriction on the shooting direction of the underwater camera 3, and for example, it may be the lateral side as shown in FIG. 2 or the front side as shown in FIG. Further, it is more preferable that the photographing direction of the underwater camera 3 can be appropriately set according to the positional relationship with the photographing location.

As a result, it becomes possible to shoot in a state in which muddy water intervening between the underwater camera 3 and the shooting location is replaced with clear water.

Next, a photographing method for photographing the inside of the chamber of the slurry shield machine using the underwater photographing device 1 of the present embodiment will be described in detail with reference to FIGS. 4 and 5. FIG.

The chamber 11 of the slurry shield machine is a space filled with muddy water (muddy water) between the cutter 12 and the partition wall 13 . Therefore, in order to check the inside of the chamber 11 (consumed state of the cutter 12, etc.), a person enters the chamber 11 from which the muddy water (muddy water) has been removed and directly checks.

By using the underwater photographing apparatus 1 of this embodiment, photographing can be performed without extracting muddy water (muddy water) from the inside of the chamber 11 . For photographing the inside of the chamber 11, an existing pipe 14 (for example, a pipe for pouring water) arranged through the partition wall 13 is used.

First, as shown in FIG. 4(a), the extension pipe 17 for insertion with the water stop packing 16 attached to the inner periphery thereof is connected while the water stop valve 15 provided in the existing pipe 14 is closed. The waterproof packing 16 has a donut shape with an opening into which the underwater photography device 1 (cover section 4) can be inserted, and is interposed between the inner peripheral surface of the insertion extension tube 17 and the outer peripheral surface of the cover section 4, It functions as a cover support part that stops water from the open end side of the insertion extension tube 17 and supports the cover part 4 so as to be movable in the front-rear direction. Further, the insertion extension tube 17 is provided with a drain plug 18 .

Next, as shown in FIG. 4B, after inserting the underwater photographing device 1 into the insertion extension pipe 17 from the front end side, the stopcock 15 of the existing pipe 14 is opened. The stopcock 15 is composed of, for example, a ball valve that opens and closes the flow path by a spherical valve body (ball valve) with a hole. By opening the stopcock 15, the cover part 4 can pass through. A straight flow path is formed. When inserting the underwater photographing device 1 , if the balloon 6 is pushed into the opening at the front end of the cover portion 4 , the balloon 6 can be prevented from being caught in the waterproof packing 16 .

Further, the connection of the insertion extension pipe 17 to the existing pipe 14 may be performed in a state in which the underwater photographing device 1 is inserted into the insertion extension pipe 17 from the front end side. In this case, after the underwater photographing apparatus 1 with the balloon 6 removed is inserted from the water stop packing 16 side of the insertion extension tube 17, the balloon 6 is attached to the cover part 4, so that the balloon 6 is attached to the water stop packing. 16 can be prevented.

A drain plug 42 is provided on the cover portion 4 of the underwater photographing device 1 shown in FIGS. The drain plug 42 is composed of, for example, a ball valve. By opening the drain plug 42, a flow path penetrating the peripheral surface of the cover portion 4 is formed.

Next, as shown in FIG. 5A, the underwater photographing device 1 is pushed in, and the front end to which the balloon 6 is attached is moved to the vicinity of the photographing location in the chamber 11 via the existing pipe 14 . In addition, it is preferable to open the water inlet 41 and the drain plug 42 while moving to the photographing location. In this case, the water pressure keeps the balloon 6 deflated and pushed into the front end opening of the cover portion 4 , thereby preventing the balloon 6 from getting entangled with the stopcock 15 of the existing pipe 14 .

Next, with the drain plug 42 closed, fresh water is injected from the water inlet 41 into the hollow portion of the cover portion 4, thereby inflating the balloon 6 as shown in FIG. is brought into contact with the shooting location. Alternatively, the drain plug 42 may be opened to exhaust air from the hollow portion of the cover portion 4 until the hollow portion of the cover portion 4 is filled with clean water, and then the drain plug 42 may be closed. In this case, the balloon 6 can be smoothly inflated only with fresh water. When the air is exhausted from the hollow portion of the cover portion 4, it is preferable to rotate the cover portion 4 so that the drain plug 42 is positioned above the cover portion 4. As shown in FIG. Further, an exhaust plug for removing air, which is different from the drain plug 42, may be provided separately.

Next, the rod portion 2 is moved forward relative to the cover portion 4 to switch to a projecting state in which part or all of the front side of the underwater camera 3 projects from the cover portion 4 . In the protruded state, part or all of the front side of the underwater camera 3 protrudes from the cover part 4, and a wide range can be photographed.

As a result, even if the chamber 11 is filled with muddy water (muddy water), the muddy water (muddy water) intervening between the underwater camera 3 and the position to be photographed can be replaced with clear water.

After photographing is finished, as shown in FIG. 5B, the drain plug 42 positioned below the cover portion 4 is opened to drain the fresh water from the balloon 6 . Thereby, the underwater photographing device 1 can be pulled out from the existing pipe 14 . After closing the stop cock 15 , the drain cock 18 is opened to drain muddy water (muddy water) from between the cover portion 4 and the insertion extension pipe 17 . Thereby, the underwater photographing device 1 can be pulled out from the insertion extension pipe 17 , and the insertion extension pipe 17 is removed from the existing pipe 14 .

FIG. 6 shows underwater photographing devices 1a and 1b having a function of spraying clean water onto photographed locations. Referring to FIG. 6(a), the underwater photographing apparatus 1a has, in addition to the configuration of the underwater photographing apparatus 1 described above, a nozzle 8 for injecting fresh water injected from a water inlet 41 toward the photographing location. It is As a result, the area to be photographed can be washed with clean water jetted from the nozzle 8 . For example, when observing the cutter 12 in the chamber 11 , the clean water sprayed from the nozzle 8 can remove mud adhering to the cutter 12 , making it possible to accurately observe the state of the cutter 12 .

6(b), the underwater photographing apparatus 1b has a balloon 6a formed with an opening 61 through which fresh water injected from the water inlet 41 is injected toward the photographing location. It is installed so as to block the As a result, the photographed location can be washed with clean water jetted from the opening 61 .

As described above, the present embodiment is an underwater photographing apparatus 1 for photographing underwater using an underwater camera 3. The rod portion 2 has the underwater camera 3 fixed to the front end thereof, and the cylindrical cover covering the underwater camera 3. 4, a water inlet 41 formed on the peripheral surface of the cover 4, and attached to the inner periphery of the cover 4 on the rear side of the water inlet 41 to support the rod 2 so as to be movable in the front-rear direction. , a water stop packing 5 (clear water stop packing) interposed between the inner periphery of the cover portion 4 and the outer periphery of the rod portion 2 to stop fresh water injected from the water inlet 41; and a balloon 6 attached so as to close the opening.
With this configuration, the underwater camera 3 can be moved while covered with the cover part 4, so that the underwater camera 3 can be safely guided to the shooting location even in an environment filled with muddy water.

Furthermore, in this embodiment, the entire underwater camera 3 can be accommodated in the hollow portion of the cover portion 4 by moving the rod portion 2 in the front-rear direction relative to the cover portion 4 .
With this configuration, the underwater camera 3 can be moved while the camera is entirely housed in the hollow part of the cover part 4, so that the underwater camera 3 can be safely guided to the shooting location even in an environment filled with muddy water. .

Further, in the present embodiment, the cover portion 4 is provided with a nozzle 8 for injecting fresh water injected from the water injection port 41 toward the photographed location.
With this configuration, it is possible to wash the photographed part with clean water jetted from the nozzle 8 .

Further, in the present embodiment, the balloon 6 is formed with an opening 61 through which fresh water injected from the water inlet 41 is injected toward the photographed location.
With this configuration, it is possible to wash the imaging location with clean water jetted from the opening 61 .

Further, this embodiment is an underwater photographing method for photographing the inside of the chamber 11 of a slurry shield excavator using the underwater photographing devices 1, 1a, and 1b. The existing pipe 14 (pipe), which is water-stopped by the plug 15, has openings into which the underwater photographing devices 1, 1a, and 1b (cover portion 4) can be inserted, and is interposed between the cover portion 4 and the outer periphery thereof. a connection step of connecting an insertion extension pipe 17 having a water stop packing 16 (muddy water stop packing) attached to the inner periphery for stopping muddy water in the chamber 11; After inserting 1a and 1b (cover section 4) from the front end side, an insertion step of opening the stop cock 15 and inserting the front ends of the underwater photographing devices 1, 1a and 1b (cover section 4) into the chamber 11 via the existing pipe 14. and a water injection step of inflating the balloon 6 by injecting fresh water from the water injection port 41 and bringing it into contact with the imaging location.
With this configuration, even if the chamber 11 is filled with muddy water (turbid water), the underwater camera 3 can be safely guided into the chamber 11, and the muddy water (turbid water) intervening between the underwater camera 3 and the shooting location can be removed. It becomes possible to shoot with Shimizu replaced.

The present invention has been described above based on the embodiments. It should be understood by those skilled in the art that this embodiment is an example, and that various modifications can be made to the combination of each component, etc., and that such modifications are also within the scope of the present invention.

1, 1a, 1b Underwater camera 2 Rod part 3 Underwater camera 4 Cover part 5 Water stop packing 6, 6a Balloon 7 Cable 8 Nozzle 11 Chamber 12 Cutter 13 Partition wall 14 Existing pipe 15 Water stop plug 16 Water stop packing 17 Extension for insertion Pipes 18, 42 Drain plug 41 Water inlet 61 Opening

Claims (4)

An underwater photography device for photographing underwater with an underwater camera,
a rod portion having the underwater camera fixed to its front end;
a cylindrical cover that covers the underwater camera;
a water inlet formed on the peripheral surface of the cover;
It is attached to the inner periphery of the cover portion on the rear side of the water inlet, supports the rod portion so as to be movable in the front-rear direction, and is interposed between the inner periphery of the cover portion and the outer periphery of the rod portion. a fresh water stop packing for stopping fresh water injected from the water inlet;
a balloon attached to block the opening at the front end of the cover,
By moving the rod portion in the front-rear direction relative to the cover portion, the stored state in which the entire underwater camera is stored in the hollow portion of the cover portion, and the portion of the front side of the underwater camera. Alternatively, the underwater photographing apparatus is switchable between a protruding state in which the entirety protrudes from the front end of the cover portion. 2. The underwater photographing apparatus according to claim 1, wherein the cover portion is provided with a nozzle for spraying fresh water injected from the water inlet toward the photographing location. An underwater photography device for photographing underwater with an underwater camera,
a rod portion having the underwater camera fixed to its front end;
a cylindrical cover that covers the underwater camera;
a water inlet formed on the peripheral surface of the cover;
It is attached to the inner periphery of the cover portion on the rear side of the water inlet, supports the rod portion so as to be movable in the front-rear direction, and is interposed between the inner periphery of the cover portion and the outer periphery of the rod portion. a fresh water stop packing for stopping fresh water injected from the water inlet;
a balloon attached to block the opening at the front end of the cover,
An underwater photographing apparatus according to claim 1, wherein the balloon is formed with an opening through which fresh water injected from the water inlet is jetted toward the photographing location. A rod part with an underwater camera fixed to the front end,
a cylindrical cover that covers the underwater camera;
a water inlet formed on the peripheral surface of the cover;
It is attached to the inner periphery of the cover portion on the rear side of the water inlet, supports the rod portion so as to be movable in the front-rear direction, and is interposed between the inner periphery of the cover portion and the outer periphery of the rod portion. a fresh water stop packing for stopping fresh water injected from the water inlet;
An underwater photographing method for photographing the inside of a chamber of a slurry shield excavator by using an underwater photographing device for photographing underwater with the underwater camera, comprising a balloon attached so as to close the opening at the front end of the cover part. and
An opening into which the underwater photographing device can be inserted is provided in a pipe arranged through a partition wall and in a state where water is stopped by a stopcock, and is interposed between the outer periphery of the cover portion and the inside of the chamber. A connection step of connecting an insertion extension pipe having a muddy water stop packing attached to the inner circumference for stopping muddy water;
an insertion step of opening the stop cock after inserting the underwater photographing device into the insertion extension tube from the front end side;
a moving step of moving the front end of the underwater photography device into the chamber via the pipe;
and a water injection step of inflating the balloon by injecting fresh water from the water injection port and bringing the balloon into contact with the location to be photographed.

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