JP4798449B2 - Depth depth indicator - Google Patents

Description

  The present invention relates to an ascent depth indicating device for recognizing the ascent of a diver engaged in offshore construction.

In order to prevent decompression sickness, divers who have performed diving work at a depth of 10 m or more are obliged to ascend while stopping at a predetermined water depth for a predetermined time based on the high-pressure work safety and health regulations. For this reason, divers are usually suspended by relying on a display board (wooden bills, cloth, etc.) indicating the depth of water attached to a drop rope suspended from a diver's ship, or relying on a depth gauge carried by themselves. It repeats this temporary stop and gradually rises. In recent years, an electronic depth gauge has been used as a depth gauge, which calculates a suspension stop depth and suspension stop time according to the dive depth and residence time, and has a function of displaying this on the display. (For example, refer to Patent Document 1).
JP-A-5-141973

  By the way, the above-mentioned suspension of levitation has relied solely on the voluntary actions of divers, and it has been necessary to rely on diving daily reports recorded after the ascent to confirm whether or not levitation suspension was performed as prescribed. There wasn't. For this reason, if the diving daily report lacks accuracy for some reason, there is no way to confirm it from the outside, and some measures have been desired in terms of safety management.

  In addition, during the diving work, the A flag, which is an international signal flag, is raised on the diver's ship to alert the surrounding vessels. There was also a danger of causing serious human and property damage.

  The present invention has been made in view of the above-mentioned problems, and the first problem is that the ascent depth indicating device capable of confirming the ascent status of the diver in real time from around the diver's ship. It is to provide. Moreover, the place made into the 2nd subject is to provide the levitation depth indicating apparatus which exhibits a big effect also to alerting a surrounding ship in addition to the said 1st subject.

  1st invention for solving the said 1st subject is provided with the indicator lamp installed on the diver's ship so that visual recognition from the periphery and the switch which lights this indicator lamp, The said indicator lamp is a diver's It is characterized by being provided in a plurality in a tandem arrangement according to the ascent depth.

  In the ascending depth indicating device having the above-described configuration, every time a diver reaches a predetermined ascending stop depth, the indicator lamp is turned on by operating a switch corresponding to the ascending stop depth. The waiting manager can confirm the ascent of the diver in real time. In this case, it is desirable that the plurality of indicator lamps be color-coded according to the ascent depth of suspension, thereby confirming the ascent status more accurately.

  In the first aspect of the present invention, the plurality of switches may be arranged on the diver's ship so as to be operated by a contact person on the submarine who can communicate with the diver, or may be arranged on the diver's ship in a switch box. May be arranged at the same interval as the levitation stop depth along the descending rope. In any case, since the switch is operated according to the will of the diver, the lighting of the indicator light is not misunderstood and the ascent of the diver can be accurately grasped.

According to a second invention for solving the second problem, in the first invention, the indicator lamp is a blinking lamp or a revolving lamp, and is installed in the vicinity of the A flag which is an international signal flag. Features.
In the ascending depth marking device configured as described above, the marking light is a blinking light or a revolving light. Therefore, it is easy to attract attention from the surrounding ships, and the oversight of the A flag existing in the vicinity of the marking light is greatly increased. To reduce.

  According to the ascent depth indicating device as the first invention, the ascent status of the diver can be confirmed in real time from the periphery of the diver's ship, so that safety management can be enhanced. Moreover, since it has a simple structure in which the indicator lamp and the switch are combined, the cost burden is small, and a special space is not required for the installation, and there is an advantage that it can be used easily.

  Further, according to the ascent depth indicating device as the second invention, in addition to the effect of the first invention, the warning to the A flag is advanced by the flashing light or the revolving light, so that human and property damage can be prevented. It will greatly contribute.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows a submarine ship equipped with a levitation depth indicating device according to one embodiment of the present invention. In the figure, 1 is a diver's boat, 2 is a diver, and the diver's boat 1 and the diver 2 are connected by a cable 3 including an air hose and a communication line. In the present embodiment, on the diver's ship 1, the diver via the air line 4 for managing the amount of air sent to the diver 2 through the air hose in the cable 3 and the communication line in the cable 3. A liaison member (Tsunao) 5 and a reserve member 6 who exchange information with the person 2 through a call are arranged. In addition, about the reserve member 6, it arrange | positions as needed and the arrangement | positioning may be abbreviate | omitted.

  Reference numeral 7 denotes an A flag which is one of international signal flags, and is installed on the diver's ship 1 at a position visible from the periphery. This A flag is for informing the surroundings that diving work is in progress, and consists of a two-color flag of white and blue (painted black in the figure).

  Reference numeral 8 denotes a descending rope suspended from the diving ship 1 underwater. The descending rope 8 is used as a guide when the diver 2 descends and ascends, and is attached with a display board 9 of a wooden bill or a cloth lamp indicating the water depth. The said display board 9 is attached for every predetermined water depth according to a high-pressure work safety hygiene rule, and is arrange | positioned by 3 m space | interval (9m, 6m, 3m depth from a water surface) like illustration in the place close | similar to a water surface especially. Yes. In this case, the indication water depth of each display board 9 is in agreement with the levitation stop depth.

  The ascending depth marking device according to the present invention includes a marking unit 10 installed at the same height as the A flag 7 in the vicinity of the A flag 7 and a switch box 20 detachably installed in the vicinity of the contact person 4. It is roughly composed of As shown in FIG. 2, the marking unit 10 includes three rotating lights 11 (11 </ b> A, 11 </ b> B, 11 </ b> C) arranged in a column, and a base plate 12 fixed on the deck of the submarine ship 1. It is mounted on the support plate 14 on the support column 13 that stands upright. Each revolving light 11A, 11B, 11C indicates a state in which the diver 2 is suspended at the ascent depth (9 m, 6 m, 3 m depth from the water surface). Depending on the color. As an example, the lowest rotating light 11A corresponding to the ascending stop depth 9m is green, the intermediate rotating light 11B corresponding to the ascending stop depth 6m is yellow, and the uppermost rotating light 11A corresponding to the ascending stop depth 3m. Are set to red. Moreover, although the magnitude | size of each rotary lamp 11A, 11B, 11C is arbitrary, as an example, it is set to the magnitude | size of 120 mm square and thickness (height) of 100 mm.

  On the other hand, as well shown in FIG. 3, the switch box 20 is provided with a switch 21 (21A, 21B, 21C) for turning on the three rotating lamps 11A, 11B, 11C in the marking unit 10 independently. They are arranged in tandem according to the lamp arrangement. The switch box 20 is provided with lamps 22A, 22B, 22C and a main switch 23 that are turned on when the switches 21A, 21B, 21C are operated (turned on). The lamps 22A, 22B, and 22C are also color-coded according to the rotating lamps 11A, 11B, and 11C.

Hereinafter, the operation of the ascent depth indicating device configured as described above will be described.
The diver 2 who has completed the diving work communicates with the contact person 5 on the diver's ship 1 using the communication line in the cable 3 and notifies the start of ascent. Then, the liaison member 5 contacts the commander in the vicinity of the diver's ship 1 or the manager standing on the land using, for example, wireless communication, and informs that the diver 2 starts to ascend. introduce. The diver 2 ascends the descending rope 8 for guidance, and when the diver 2 ascends to the position of the display board 9 indicating the depth of water 9 m, the diver 2 informs the contact person 5 on the diver 1 that the suspension is started. The contact person 5 draws the switch box 20 to hand in advance. When the contact person 5 receives a message from the diver 2 to start the ascent stop, the contact person 5 operates the green (lowest) switch 21A corresponding to the water depth of 9 m, thereby the indication unit. The green (lowest) rotating lamp 11A in 10 is turned on. The contact person 5 confirms that the green lamp 22A in the switch box 20 is lit and confirms that there is no error in the switch operation.

  The diver 2 confirms the underwater clock carried by the diver 2 and stops at the above-described levitation stop depth of a water depth of 9 m for a predetermined time according to an instruction from the contact person 5. Then, when a predetermined time has elapsed, the ascent is started again, and the suspension of the ascent is started again at the position of the display board 9 representing the next water depth 6 m, and this is transmitted to the contact person 5 on the submarine ship 1. Upon receiving this notification, the contact person 5 operates the yellow (intermediate) switch 21B corresponding to the water depth of 6 m, thereby turning on the yellow (intermediate) rotating lamp 11B in the marking unit 10. That is, the marking unit 10 is in a state in which the lowest green rotating lamp 11A and the intermediate yellow rotating lamp 11B are lit simultaneously.

  The diver 2 confirms the underwater clock in the same manner as described above and stops at the floating stop depth of the water depth of 6 m for a predetermined time according to an instruction from the contact person 5. Ascend to the position and start to stop again. The contact person 5 on the diver's ship 1 receives the notice of the start of ascent stop from the diver 2 and operates the red (topmost) switch 21C corresponding to the water depth of 3 m, thereby the red in the marking unit 10. The (topmost) rotating lamp 11C is turned on. That is, the marking unit 10 is in a state where three of the green rotating lamp 11A, the yellow rotating lamp 11B, and the red rotating lamp 11C are lit simultaneously. Thereafter, the diver 2 ascends to the surface of the water after finishing the suspension at the depth of 3 m, and the contact person 5 turns off all the switches 21 in the switch box 20 by confirming the ascent, thereby indicating the marking unit. All the rotating lamps 11 (11A, 11B, 11C) in 10 are turned off.

  Here, the lighting state of each rotating lamp 11A, 11B, 11C in the marking unit 10 is monitored by an external administrator, and the administrator determines from the lighting time of each rotating lamp 11A, 11B, 11C, It is confirmed whether or not the diver 2 enforces the specified ascent stop. Incidentally, the high pressure work safety and hygiene rules stipulate that the ascent rate is 10 m / min or less, and according to this, the ascent time interval is 3 m. Is 18 seconds (= 60 × 3/10) or more. In this case, assuming that the diver 2 has stopped ascending according to the specified time, if the rotating lamp 11 is lit at the above-described time (18 seconds) interval, the ascending stop has been performed as specified.

  In this manner, the manager standing by the ship around the diver's ship 1 or the monitoring tower on the land can check the ascending situation of the diver 2 in real time, so the reliability for safety management is remarkably improved. The diver 2 can be protected from decompression sickness. In addition, since the ascending depth marking device has a simple structure in which the rotating lamp 11 constituting the marking unit 10 and the switch 21 are combined, the manufacturing cost is not so high, and a special space is required for the installation. It is not necessary and can be used easily.

  Especially in this embodiment, since each rotary lamp 11 (11A, 11B, 11C) and the switch 21 (21A, 21B, 21C) are color-coded, the ascent status of the diver 2 can be confirmed more accurately from the outside. In addition, erroneous operation is less likely to occur in the switch operation by the contact person 5. Further, since the indicator light is composed of the revolving light 11, it is easy to attract attention from surrounding ships, the oversight of the A flag 7 existing in the vicinity of the revolving light 11 is greatly reduced, and the surrounding ships are careless. The risk of invading and causing human and property damage is greatly reduced.

  In addition, the indicator lamp which comprises the said indicator unit 10 may replace with the above-mentioned revolving light 11, and may use a blinking lamp, and also contributes to alerting with respect to a surrounding ship similarly to the revolving light 11. In addition, this indicator lamp may be a simple illumination lamp. In this case, the effect that contributes to alerting the surrounding area is small, but it is useful for confirming the rising situation by the administrator.

  Moreover, in the said embodiment, although the switch box 20 provided with switch 21 (21A, 21B, 21C) was installed on the diver's ship 1 and the contact member 5 was made to perform switch operation, this invention is These switches may be arranged along the descending rope 8 in accordance with the display board 9 so that the diver 2 operates the switches. In this case, since the switch operation is directly performed by the diver 2 without using the contact person 5, it is useful for preventing an erroneous operation of the switch.

It is a perspective view which shows the submarine ship equipped with the ascent depth indicator which concerns on this invention, and the implementation condition of ascent. It is a perspective view which shows the structure of the marking unit containing the marking lamp which comprises this floating depth marking apparatus. It is a perspective view which shows the structure of the switch box containing the switch which comprises this flying height marking apparatus.

Explanation of symbols

1 Diver 2 Diver 5 Contact 7 Flag A 8 Drop rope 9 Depth display board 10 Marking unit 11 Rotating light (11A, 11B, 11C)
20 Switch box 21 Switch (21A, 21B, 21C)

Claims (5)

  It is provided with an indicator lamp installed on the diver's ship so as to be visible from the periphery and a switch for turning on the indicator lamp, and a plurality of the indicator lamps are provided in a tandem arrangement in accordance with the ascending stop depth of the diver. Characterized ascent depth device.   The ascending depth indication device according to claim 1, wherein the plurality of indication lamps are color-coded according to the ascending stop depth.   The levitation depth indicator according to claim 1 or 2, wherein the plurality of switches are arranged on the diver's ship in a collective manner in a switch box so as to be operable by a contact person on the diving ship capable of talking with the diver. apparatus.   3. The ascent depth indicator according to claim 1, wherein the plurality of switches are arranged at the same distance as the ascent depth along the descending rope so as to be operable by a diver.   The ascending depth marking device according to any one of claims 1 to 4, wherein the marking lamp is a rotating lamp or a flashing lamp and is installed in the vicinity of the A flag which is an international signal flag.

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