JPS5943351Y2 - underwater hoppa - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an underwater hopper that can be applied to an underwater abandoned ship.

FIG. 1 is a diagram showing how rubble is dumped underwater by a conventional underwater dumping boat 1.

The rubble 3 is stored in a plurality of hoppers 2 installed in the ship's hold, and when dumping, the hoppers 2 are individually suspended into the sea by a mobile crane 4 on a deck and dumped.

In this case, in order to reduce scattering of the rubble 3 and to improve the accuracy of the finished shape of the piled rubble, the hopper 2 is lowered as close to the seabed 5 as possible to dump the rubble.

Next, a method for discarding the rubble 3 will be explained using FIGS. 2 and 3.

FIG. 2 shows the situation before dumping, in which the hopper 2 is suspended by a hanging rope 6, and the opening/closing teeth 7 are loose.

In addition, in the state shown in FIG. 3 in which the opening/closing tooth I is tensed and the hanging rope 6 is loosened, the hopper 2 is opened around the hinge 8,
Rubble stone 3 is thrown away.

The size of the rubble 3 used is about 10 to 30 crrL.

In FIG. 3, F GG' F '. EDD'E',
GO'C'C, DD'B'B, AEDB, AFGC
, A'E'D'B', and A'F'G'C' are made of steel plates, and seawater cannot flow through them.

However, conventional underwater hoppers have the following drawbacks.

FIG. 4 shows a state in which the hopper 2 is open, and in this state, the volume corresponding to ΔABC has increased from the volume before dumping.

This volume increase is the difference between opening BC and upper BAF of hopper 2.
This is supplemented by the inflow of seawater 9 through the water.

Since the opening of the hopper 2 is initially instantaneous, the interior 10 of the hopper temporarily becomes a negative pressure, and the opening of the hopper 2 is not promoted until there is an inflow of seawater sufficient to counteract this negative pressure.

Furthermore, in the conventional hopper 2, the only parts into which seawater can flow are the opening BC and the upper EAF, which limits the flow of seawater and therefore has the disadvantage that it takes a long time to open the hopper 2.

Further, the time it takes to open the hopper not only reduces work efficiency but also reduces the accuracy of finishing the shape of the pile of rubble.

The disadvantage is that the longer the hopper is open, the more the hopper is swayed by waves or currents, making it more difficult to dump to the desired location.

This invention was proposed in order to eliminate the above-mentioned drawbacks of the conventional method, and it aims to improve the finishing accuracy of the rubble pile shape by making seawater circulation holes in the outer plate of the hopper so that the hopper can be opened in a short time. The objective is to provide a submersible hopper that can

An embodiment of the present invention will be described below with reference to the drawings. FIG.
A plurality of flow holes 12 are pre-drilled in 1a, which are normally closed and opened when discarding rubble 3, allowing seawater to flow into the hopper 11. It's a hopper.

Next, to explain concrete examples in detail, FIG. 6 is a front external view of the underwater hopper 11, FIG. 1 is a view taken along the arrow A-A in FIG. 6, and FIG. be.

Further, details of the H portion in FIG. 8 are shown in FIGS. 9 and 12, and details of the ■ portion in FIG. 6 are shown in FIGS. 10 and 13, respectively.

Now, the outer plate 11a of the hopper 11 has a plurality of seawater circulation holes 1.
2 are spaced apart from each other in horizontal rows at regular intervals, and water passage plates 13 are arranged along the rows of these passage holes 12 in contact with the surface of the outer panel 11a.

The water passage plate 13 has a communication hole 12 formed in the outer plate 11a.
Flow holes 14 having approximately the same diameter are provided at the same intervals.

In addition, the water passage plate 13, as shown in FIG. 11 or 14,
It is assembled so as to be able to slide left and right between a pair of L-shaped clasps 15 fixed to the outer plate 11a.

Further, the water passage plates located in left-right symmetrical positions are connected by wires 16 at their ends (Fig. 7). Furthermore, there is a wire between the ends of the water passage plates 13 and the edge of the hopper outer plate 11a. A spring 11 is interposed, and a trigger 18 is connected to a pin 1 near the edge of the outer plate.
It is installed so that it can rotate freely around 9.

The tip of this trigger 18 is adapted to engage with a protrusion 20 attached to the end of the water passage plate 13, and the other end is engaged with a wire 16 that connects the water passage plates corresponding to the left and right outer plates. It is designed to match.

This configuration is exactly the same for the other outer plate side located at a symmetrical position, and both are connected via wires 16.

Further, 21 is a stopper, which serves to limit the amount of rotation of the trigger 18.

In the description of the specific example, one water passage plate 13, one spring 17, and one set of triggers 1 are used for the - row of flow holes 12.
For example, as shown in FIG. 15, the ends of a plurality of water passage plates 13 on the same outer plate surface are connected by a connecting member 22. It is also possible to have a configuration in which the trigger is integrated and one or two sets of springs, triggers, wires, etc. are combined.

Further, it is desirable that the size of the flow holes 12 or 14 be as large as possible and as large as possible within a range that prevents the stored rubble from leaking out and that is determined by the strength of the outer panel.

Normally, the ratio of the total area of the flow holes to the total area of the outer panel is approximately 20% or more.

Next, to explain the operation, the state before the hopper 11 is opened is shown in FIGS. 9 to 11.

That is, since the tip of the trigger 18 engages with the protrusion 20 at the end of the water passage plate, the movement of the water passage plate is restricted, and the other end of the trigger 18 is connected to the wire connecting each device on the left and right outer plates. 16 are engaged.

In such a state, the distribution holes 12 of the outer panel 11a and the distribution holes 14 of the water passage plate 13 are arranged so that their center positions are shifted, so that the distribution holes 12 of the outer plate 11a are arranged so that the distribution holes 14 of the water passage plate 1
Step 3 will make it look exactly covered.

Therefore, seawater cannot flow into the hopper 11, and even small pieces of rubble 3 loaded in the hopper 11 do not leak through the flow holes 12 and flow out.

Next, the state in which the hopper 11 is opened is shown in FIGS. 12 to 14.

That is, when the hopper 11 starts to open, the wire 16 connecting the left and right outer plate side devices is pulled, so force acts on the trigger 18, and eventually the protrusion 20 at the end of the water passage plate 13 and the trigger 1
8 The attachment with the tip is lost.

Therefore, the water passage plate 13 is pushed by the elasticity of the spring 17,
It moves until the flow holes 12 of the outer plate 11a and the flow holes 14 of the water flow plate 13 match (a stopper that regulates the moving distance may be provided, although not shown).

In this case, there is no problem if the left and right protrusions 20 and the trigger 18 are disengaged at the same time, but it is possible that only one of them disengages earlier (or later).

However, even in such a case, since the stopper 21 restricts the rotation of the trigger that was released earlier, the tension of the wire 16 is maintained and continues to act on the trigger that is not released.

Even after both triggers are released and disengaged, if the hopper 11 continues to open and the wire 16 is pulled, the wire 16 will be completely disengaged from the end of the trigger 18, so that excessive tension will not be applied. There isn't.

Thus, when the seawater 9 flows into the hopper 11 through the two flow holes 12 and 14, the negative pressure inside the hopper 11 decreases.
Alternatively, the time required for opening the hopper 11 is shortened, and the dumping operation can be performed efficiently.

As explained in detail above, the present invention is structured so that the opening time of the hopper is shortened, so that the hopper is not shaken by waves or currents during dumping, and rubble can be dumped accurately at the targeted location. be able to.

In addition, even if the hopper is slightly shaken, the rubble is thrown away instantly, so the influence of waves can be reduced, and the operating efficiency of dumping operations in rough weather areas can be improved.

Furthermore, since the disposal work can be completed in a short time, there are many excellent effects such as improved work efficiency.

[Brief explanation of drawings]

Figure 1 is a side view showing how rubble is being dumped underwater by a conventional underwater dumping boat, Figures 2 and 3 are perspective views showing how the hopper in Figure 1 is dumping rubble, and Figure 4 is Fig. 1 is a side sectional view of the underwater hopper showing an open state; Fig. 5 is a side sectional view of the underwater hopper showing an embodiment of the present invention; Fig. 6 is a front view of the underwater hopper showing an embodiment of the invention. , FIG. 7 is a view taken along the arrow A-A in FIG. 6, FIG. 8 is a view taken along the arrow B-B in FIG. 6,
Fig. 9 is a detailed view of the H part in Fig. 8, Fig. 10 is a detailed view of a part in Fig. 6, Fig. 11 is a sectional view taken along J-J in Fig. 10, and Fig. 12 is a detailed view of the H part in Fig. 8. Detailed view, Fig. 13 is a detailed view of the part ■ in Fig. 6, Fig. 14 is a cross-sectional view of Fig. 13, and Fig. 15 is a detailed view of the
It is a front view when three sets of 0 figures are provided. Explanation of the main parts of the diagram, 11...Hopper, 12.
...Flower hole, 13...Water plate, 14...
...Flower hole, 16...Wire, 11...
...Spring, 18...°°Trigger.

Claims (1)

[Scope of utility model registration request] In an underwater hopper for dumping rubble whose outer plate opens and closes from side to side, the outer plate is provided with seawater circulation holes arranged at predetermined intervals,
A water passage plate having circulation holes at the same intervals as the circulation holes is disposed so as to be slidable on the surface of the outer plate along the row of the circulation holes, and a spring is provided between the water passage plate and the edge of the outer plate. In addition, the water passing plates on the left and right outer panels facing each other are connected via a trigger whose tip engages with the water passing plate and a wire that engages with the other end of the trigger. Underwater hopper.