JPS5818432Y2 - Underwater cable relay device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the relay of control, power, and communication cables connected to underwater working equipment, or hoses for supplying welding gas, compressed air, and the like.

Conventional cables and hoses connected to underwater work equipment have a high risk of water leakage, so in order to reduce the number of connection points as much as possible, cables and hoses are connected directly to the underwater work equipment.

FIG. 1 is an example of this. In the figure, 1 is a work boat, 2 is a control device, 3 is a welding wire feeding device, 4 is a welding shield gas supply device, 5 is an underwater welding machine, 6 is a control device, 2 is a control cable connected to the underwater welding machine 5, and 7 is a composite hose for feeding welding wire and shielding gas.

This underwater welding machine welds the work boat's control device 2 on the underwater structure 8.
The wire feeding conduit tube (
The control cable 6 and the composite hose 7 are connected directly to the underwater welding machine 5 from the top of the work boat 1 and are relayed. Not yet.

Conventional equipment is configured as described above, so when installing an underwater welding machine to an underwater structure, it is necessary to pull out very heavy cables and hoses, which requires a lot of manpower, and This requires long cables and hoses depending on the work area (in the illustrated example, the welding distance), and as a result, the dangling cables may come into contact with the reefs on the ocean floor (or the bottom of the lake), damaging them and even causing water leakage accidents. Tension may be applied to the cable due to currents or waves, causing it to break.

There were drawbacks such as. This idea was made to eliminate the drawbacks of the conventional ones as mentioned above, and the underwater work equipment side is equipped with a cable and hose long enough to reach the water surface.
A relay box with a watertight container structure floating on the water that facilitates cable facility work and protects cables by connecting underwater work equipment, various control equipment on board, and cables and hoses from both sides. It is.

FIG. 2 is a plan sectional view showing an embodiment of the underwater cable relay device (hereinafter referred to as the device of the present invention) according to the present invention, and FIG. 3 is a front view of the device of the present invention.

11 is a relay box having a water honey container structure; 12 is an underwater connector for connecting a control cable; 13 is an underwater plug for connecting a hose; 14 is a waterproof cap for the underwater connector 12;
5 is the waterproof cap of the underwater plug 13, and 16 is the above-mentioned 14.
15 is a chain for hanging the waterproof cap; 17 is a relay control cable that connects the underwater connectors 12 attached to both walls of the relay box 11; and 18 is a relay control cable that connects the underwater plugs 13 attached to both walls of the relay box 11. The relay hose 19 is a terminal block for wiring the construction indicator light 20 provided on the upper part of the relay box 11.

In addition, a convex portion A is provided on the outer bottom of the relay box 11, and a binding hole B is provided in the convex portion A to restrict movement of the relay box 11 due to tides and waves, and a hole C is provided for an anchor to prevent the relay box 11 from flowing out. will be established.

Now, an example of the use of the device of the present invention will be explained with reference to FIG. 4.

Fig. 4 shows a device of the present invention added to the underwater welding machine according to the above-mentioned conventional method, 1 to 8 indicate the corresponding parts of the conventional method, and control cables connecting the onboard devices 2 to 3 and the underwater welding machine 5. 6 and the composite hose 7 by removing the waterproof caps 14 and 15 of the underwater cable relay device 21 according to the present invention.

(This waterproof cap 14, 15 prevents the underwater connector 12 and underwater plug 13 from rusting while the device 21 of the present invention is stored.
This is necessary to prevent bruises.

Note that the underwater connector 12 is a completely sealed waterproof type, and the underwater plug 13 is a quick joint with a built-in check valve, both of which are commercially available and will not be described in detail as they are known.) Controls installed on the work boat 1 When underwater welding starts in response to a command from device 2, welding shield gas supply device 4 on work boat 1
The shielding gas is passed from the welding wire feeding device 3, and the welding wire 3a is passed through the composite hose 7a that has both gas and wire feeding, and then the device 21 of the present invention → the composite hose 7b.
→ The device 21 of the present invention → the composite hose 7C → the underwater welding machine 5 → the welding torch 5a.

In this case, since the underwater working device is a carbon dioxide arc underwater welding machine, the wire feeding method of the underwater welding machine 5 is a push-and-pull method because the feeding distance is very long. As shown in Figure 5, the relay box 11
It is necessary to provide a pull wire feeding unit 22 in every relay box 11.

(Ordinary push-and-pull wire feeding is limited to a feeding distance of approximately 10 m, and from the viewpoint of workability for control cable facilities, it is recommended that the device of the present invention be installed at 10 m intervals.) If the relay composite hoses 23 are connected to the waterproof connection adapters 24 on the wall of the relay box 11 on both sides of the supply unit 22, there is no need to set the wires in the relay box 11 each time during initial wire feeding.

Returning to FIG. 4 again, when the welding wire 3a comes out from the welding torch 5a and touches the underwater structure 8 (base metal), an arc is generated and the underwater welding machine 5 starts welding.

If the welding distance is long, the device 21 of the present invention is installed, and the anchor hook on the outer bottom of the device 21 of the present invention is connected from the hole C to the chain 25.
is tied to the anchor 26 to prevent the device 21 of the present invention from being washed away by currents or waves.

The device 21 of the present invention is connected between the hooks provided on the convex portion A of the outer bottom of the relay box 11 using a hole B and tied with a binding member 27 such as a rope or chain to prevent tension on the control cable 6 due to tidal currents or waves. prevent and protect.

In addition, a construction indicator light 2 is installed on the top of the relay box 11 to inform ships, etc. navigating near the work site that construction is underway.
Indicated by 0.

Although the power source for the construction indicator light 20 has been described as a method in which the wiring is branched from the control cable, a dry cell battery may be used, or a two-power source system may be adopted by switching between the construction power source and the dry cell battery.

As detailed above, the device of the present invention is easy to handle and has the following great effects.

(1) It always floats because it has a watertight container structure with buoyancy.

Therefore, no protection is required to prevent the cable from touching the reef.

(2) The hook provided on the outer bottom of the relay box makes use of the hole and allows mooring of the device of the present invention and bundling of the devices of the present invention, thereby preventing tension on the cable due to tidal currents and waves, and cable outflow.

(3) Inside the relay box, as shown in the application example in Figure 5,
Auxiliary devices such as a pull wire feeding unit can be built in, making it possible to take measures to maintain the performance of underwater work equipment even if the work location is somewhat far from the work boat.

(4) By making it possible to extend the control cable,
Not only does the work range become wider, but the weight of the cable on the underwater work equipment side is also reduced by the shorter length, improving work efficiency.

(5) Since a construction indicator light is installed at the top of the relay box, there is no need to use buoys or other means to mark the construction site.

[Brief explanation of drawings]

Fig. 1 is an example of a conventional cable and hose connection, Fig. 2 is a plan sectional view showing one embodiment of the device of the present invention, Fig. 3 is a front view of the device of the present invention, and Fig. 4 is a diagram showing the use of the device of the present invention. FIG. 5 shows an example of the connection of cables and hoses as shown in FIG. 5, in which a pull wire feeding unit for a wire feeding system of a welding machine is built into a relay box as an application example of the device of the present invention. In the figure, 6 is a cable, 7 is a hose, 11 is a relay box with a watertight container structure, 12 is an underwater connector for the cable, 13 is an underwater plug for gas, 14 is a waterproof cap of the underwater connector, and 15 is a waterproof underwater plug cap, 20
is a construction indicator light. A is a convex portion provided on the outer bottom of the relay box, B is a hole for a binding hook provided on the convex portion, and C is a hole for an anchor hook provided on the convex portion. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A water container for relaying cables and hoses, a relay cable and hoses installed in this water container, a control cable and a cable to which these relay cables and hoses are connected and connected to a shipboard or underwater welding machine. A connection port for a connector, a plug, etc. provided on the wall of the water honey container to which the composite hose is detachably connected, a hook provided on the convex portion of the outer bottom of the water honey container is a hole, and the hook is fixed to the hole. An underwater cable relay device comprising a binding member such as a rope or chain that maintains a constant distance between a ship and a watertight container or a watertight container and an underwater welding machine.