JPH0640617Y2 - Melting line structure of the cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is used in the sea to melt the melting line by using the principle of electrolytic corrosion to cut off the object engaged with the cutting device. The present invention relates to a melting line structure of a structured separating device.

(Prior Art) FIG. 4 is a view showing a melting line structure in a conventional separating device. In the figure, the melting line 21 connects one metal ring 22 and an electric wire 23 at an electric wire connecting portion 24, and insulates the electric wire connecting portion 24 except an exposed portion 22a which is a part of the metal ring 22. It has a structure molded with a resin mold material 25 having high properties.

FIG. 5 is a use state diagram showing a state in which the melting line 21 is attached to the separating device 26. In the figure, a separating device 26 provided at the lower part of the underwater housing 27 is provided with a protruding bracket 28, a shaft 29 is penetrated through the end of the bracket 28, and a separating lever 30 can be swung. Is attached to. Further, the separating device 26 is provided with a hook 31 and a terminal 32, and the melting line 21 has one end of the metal ring 22 hooked on the hook 31 and the other end hooked on the separating lever 30. . Further, a ring 33 is hooked at an intermediate position of the separating lever 30, and a mooring device 35 is provided at a lower end portion thereof via a rope 34.

In the melting line structure of the separating device, when a positive potential is applied to the metal ring 22 of the melting line 21 with respect to the terminal 32 at the same potential as seawater, the exposed portion 22a is electrolytically corroded and cut. Then, the metal ring 22 that has been cut by the external force acting on the separation lever 30 that connects the mooring device 35 is spread and expanded.
Cancel 35.

(Problems to be solved by the invention) However, in the device having the above-mentioned configuration, when the exposed portion of the melting line is melted and cut, burr-like metal remains on both sides of the exposed portion, the separation lever is caught, and the separation operation is performed. There was a problem that was disturbed.

In addition, although the current decreases as the electrolytic corrosion progresses, no clear current change appears even after the metal ring is cut, which accelerates the consumption of the battery inside the underwater housing and further There was a problem that I could not move.

An object of the present invention is to provide an excellent device that eliminates the uncertainties of the cutting operation and the uncertainties of the cutting detection described above, and performs the reliable cutting operation and the easy cutting detection. .

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention connects the underwater casing and the mooring device through a melting line provided in a disconnecting device for the underwater casing, In a cutting device for melting a melting line by electrolytic corrosion, a first connecting portion in which one end of the melting line having both ends formed in a ring shape is connected to the cutting device, and the other end of the melting line is the mooring. It is a melting line structure of the cutting device, wherein a second connecting part connected to the device, and the first connecting part and the second connecting part except a part of the melting line are molded.

(Operation) According to the present invention, when the exposed portion is cut as shown in FIG. 1 or when the exposed portion is melted even if the exposed portion is not completely melted, the submersible housing rises due to buoyancy, and Along with this, the separating lever swings downward, and the ring of the mooring device hooked on the separating lever is released to separate the underwater casing from the separating device.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a melting line of a cutting device according to an embodiment of the present invention. In the figure, the melting line 1 is two metal rings 2
A wire 3 is wound around a metal ring 2 in which b and 2c are connected by a metal wire, and mechanically and electrically connected, and the metal ring 2
The exposed portion 2a, which is a part of the above, is molded with a molding material 5 such as chlorobrene rubber or polyurethane rubber.

FIG. 2 is a use state diagram showing a state in which the melting line 1 according to the embodiment is attached to the separating device 5. As shown in the figure,
A detaching device 5 provided at the bottom of the underwater casing 6 is provided with a protruding bracket 7, a shaft 8 is penetrated through an end portion of the bracket 7, and a detaching lever 9 is swingably attached. There is. Further, the melting line 1 has its metal ring 2c fixed to the separating device 5 by a screw 10, and the other metal ring 2b is hooked on a separating lever 9. Further, a ring 11 is hooked at an intermediate position of the separating lever 9, and a mooring device 13 is provided at a lower end portion thereof via a rope 12.

In the melting line structure of the disconnection device, when the metal ring 2 of the melting line is held at a positive potential with respect to the terminal 14 at the same potential as seawater by a power source provided inside the underwater housing 6 or at another place. Since there is a potential difference between the exposed portion 2a of the metal ring 2 and the seawater, electrolytic corrosion occurs, and the metal of the exposed portion 2a gradually elutes into the seawater and is cut. When the exposed portion 2a is cut, the melting line 1 no longer restrains the rotation of the separating lever 9, so that the separating lever 9 is rotated by an external force and the ring 11 is pulled out from the separating lever. The underwater housing 6 is separated from the mooring device 5 and floats by the buoyancy of the underwater housing 6.

FIG. 3 is a diagram showing a time change of a current value flowing through the metal ring. Here, the current is related to the contact area between the exposed portion 2a and seawater, but when the exposed portion 2a is cut, the surface area of the exposed portion decreases and the current value decreases. As shown in the figure, in the present embodiment, the exposed portion 2a is completely cut, so that the current value is drastically reduced, and it is possible to clearly know when it is cut.

(Effects of the Invention) As described in detail above, according to the present invention, the following effects can be achieved.

(1) Since the disconnecting device of the underwater housing and the ring connected to the mooring device are held only by the tension of the exposed portion of the melting line, even if the exposed portion of the melting line is not completely melted When the part is melted, the separating operation is surely performed.

(2) Similar to the above, since the separation line is held only by the tension of the exposed portion of the melting line and the disconnection operation is performed reliably, the change in the current at the time of cutting the exposed portion is large and the disconnection detection becomes easy and You can move to the operating stage.

[Brief description of drawings]

FIG. 1 is a sectional view of a melting line of a cutting device showing an embodiment of the present invention, FIG. 2 is a usage state diagram of the melting line, FIG. 3 is a time change diagram of a current value flowing through a ring, and FIG. FIG. 5 is a sectional view of a melting line of a conventional separating device, and FIG. 5 is a usage state diagram of the melting line. 1 ... Melting line, 2 ... Metal ring, 2c, 2b ... Metal ring, 3 ... Electric wire, 4 ... Electric wire connection part, 5 ... Mold material, 6 ... Underwater housing, 7 ... Terminal , 8 ... axis, 9 ... separation lever, 10 ... screw, 11 ... ring, 12 ... rope,
13 …… Mooring device.

Claims (1)

[Scope of utility model registration request] 1. A disconnecting device for connecting an underwater housing and a mooring device through a melting line provided in a device for separating an underwater housing, and melting the melting wire by electrolytic corrosion, wherein both ends are ring-shaped. One end of the melting line formed on the first connecting part connected to the separating device, the other end of the melting line connecting to the mooring device, a second connecting part, and one of the melting lines. The melting line structure of the disconnecting device, wherein the first connecting portion and the second connecting portion other than the portion are molded.