JPH0214266Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a structure for attaching a float to a cable, more specifically, a cable or rope that has a relatively large specific gravity and sinks in water, in which power lines and signal lines are installed. It relates to a structure for attaching a float to a cable (hereinafter collectively referred to as a cable) to provide buoyancy, and is mainly used for cables used when operating underwater exploration equipment from a ship.

(Prior Art) When remotely controlling an underwater exploration device 3 as shown in FIG. 3 from a ship 1 as shown in FIG.
A control device (not shown) on the upper side of the ship 1 and a control unit (not shown) installed inside the underwater exploration device 3 are connected by a cable 4, and a power line (not shown) and a signal are connected within this cable 4. A wire (not shown) was installed inside. However, the specific gravity of the cable 4, in which the power line and signal line are installed, is quite large, and if the cable 4 is given a margin to ensure the free running of the underwater exploration device 3, it will not work even underwater as shown in Fig. 4. The underwater exploration device 3 flexes and sinks, as shown by arrow a in Figure 4.
is pulled backwards, and the underwater exploration device 3
This had a negative effect on accurate running.

Conventionally, as shown in FIG. It ensured the free movement of the

As a means for giving buoyancy to the cable 4, the fifth
As shown in the figure, in addition to installing floats 6 having a large volume and high buoyancy at intervals, as shown in FIG. was also adopted. Alternatively, measures such as increasing the thickness of the cable 4 itself and integrally forming a buoyancy imparting body (not shown) with a small specific gravity in the cable 4 have also been adopted.

(Problems with the prior art) However, in the case of the conventional example shown in FIG. I had a problem where I couldn't install it.

In the conventional example shown in FIG. 6, there were problems in that it took time to pass the float 7 through the cable 4, and the area around the cable 4 was bulky because of the float 7.

Also, by increasing the thickness of the cable 4 itself,
In the case of a means in which a buoyancy imparting body (not shown) having a small specific gravity is integrally formed inside, there are problems in that the manufacturing cost becomes high and the cable 4 itself becomes bulky.

(Means for Solving the Problems) The present invention consists of a cable for controlling an underwater working machine from a ship, a float body that imparts buoyancy to the cable, and a pair of wrapping bodies arranged on both sides of the float body. In the structure for attaching a float to a cable, the float body is formed into a streamlined elongated shape, and one end of each winding body is integrally fixed to both sides in the length direction of the float body. It has a float mounting structure to the cable.

(Embodiment) In FIG. 1 showing an embodiment of the present invention, the same reference numerals as in FIGS. 3 to 6 indicate corresponding parts, and only the differences will be explained below.

Cable 4 connects underwater exploration device 3 (Figure 3) and ship 1
(Fig. 4) side, and is made of resin such as nylon, and has great strength and considerable rigidity. A power line (not shown) and a signal line (not shown) are installed inside this cable 4. The float 10 is a float body 11
The float main body 11 has a shape similar to that of a spindle-shaped body cut along a plane including the long axis, and has a shape that receives little resistance even underwater. ing.
This float body 11 is made of epoxy resin and glass beads called micro balloons.
It is formed as a foam-like buoyant body with low specific gravity. A pair of wrapped bodies 14, 1 are provided at the portions near the cutting surface 13 at both lengthwise ends of the float body 11.
5 is fixed in such a way that one end thereof is embedded in the float body 11. The wrapped bodies 14 and 15 are made of, for example, polyethylene, and are formed into a spiral shape in their natural state, and have a flexible structure that can be expanded and contracted. The required number of floats 10 and the intervals at which they are attached to the cable 4 are determined by the weight of the cable 4 and the float 1.
It is calculated in advance from the buoyancy force given by 0.

Next, the operation will be explained. To attach the floats 10 at predetermined intervals, the floats 10 are placed along the predetermined attachment points of the cable 4, and the wrapped bodies 14,
These wrapped bodies 14, 1 from the stretched state of 15
5 around cable 4. Once the wrapped bodies 14, 15 are wrapped around the cable 4, even if a force that pulls the float main body 11 is applied, the wrapped bodies 14, 15 will not move.
The diameter of the wrapped body 14,
15 is further wound around the cable 4, and the float 10 does not easily come off from the cable 4.

In another embodiment shown in FIG. 2, the shape of the float body 11 is formed into a streamlined spindle shape with less movement resistance in water, and the float body 11 includes the axis of the float body 11 and has a long length. A concave portion 12 extending in the horizontal direction is formed, and by positioning the cable 4 within this concave portion 12, the float main body 11 can be more stably aligned along the cable 4.

(Effects of the invention) In the structure for attaching the float to the cable 4 according to the invention, a spiral flexible wrapping body 14,
15 is fixed and the winding bodies 14 and 15 are wound around the cable 4, so that the float 10 is fixed to the cable 4. Therefore, it is possible to extremely easily attach the float 10 to the cable 4. The float 10 can be easily attached to a desired location. Therefore, it becomes easy to maintain the cable 4 stably floating in the water. Furthermore, even if a tensile force is applied to the float body 11 after the float 10 is attached to the cable 4, the wrapped body 14,
15 will be pulled in the direction of diameter reduction, and problems such as the float 10 easily detaching from the cable 4 will not occur. Furthermore, the float 10 does not need to be attached continuously, and problems such as those caused by bulkiness around the cable 4 do not occur. Furthermore, the manufacturing cost is low, and it is possible to reduce costs.

Further, according to the present invention, the float main body 11 formed in a streamlined and elongated shape is employed as a member that imparts buoyancy to the cable 4 for controlling an underwater working machine (for example, the underwater exploration device 3) from the ship 1. Therefore, the resistance that the float body 11 receives when the underwater working machine moves underwater is reduced. Therefore, there is no possibility that the float main body 11 will interfere with the moving operation of the underwater operating machine.

Furthermore, since one end of each of the wrapped bodies 14 and 15 is integrally fixed to both sides of the float body 11 in the length direction, not only the work of fixing the float body 11 is made easier, but also a special fixing means is provided. Even without it, the float main body 11 will not fall off during use.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an embodiment of the present invention, FIG. 2 is a perspective view of a float body showing another embodiment,
Figure 3 is a schematic perspective view of the underwater exploration device, Figure 4 is a schematic side view showing how a conventional cable is used, and Figure 5 is a schematic perspective view of the underwater exploration device.
The figure is a schematic side view showing the state in which the float is attached to the cable, and FIG. 6 is a schematic sectional view showing the state in which the float is attached to the cable. 1... Ship, 3... Underwater exploration device (underwater working machine),
4... Cable, 11... Float body, 14,
15...Wrapped body.

Claims (1)

[Scope of utility model registration request] A cable for controlling underwater work equipment from a ship, a float body that gives buoyancy to the cable,
In a structure for attaching a float to a cable, which includes a pair of winding bodies arranged on both sides of a float body, the float body is formed into a streamlined elongated shape, and one end of each winding body is connected to the float body. A structure for attaching a float to a cable, characterized in that it is integrally fixed on both sides in the length direction.