JPS63101190A - Float device for refloating sunken matter - Google Patents

Abstract

PURPOSE:To maintain the floating force constant, by providing an air bag of bellows structure which is telescopable vertically and having closed upper end and open bottom, an outer frame for inserting the air bag liftably/lowerably in vertical direction and a stopper fixed to a horizontal annular metal at the lower end of the air bag such that it can bite the side frame of the outer frame. CONSTITUTION:Since an air bag 1 has a vertically telescopable bellows structure, the volume thereof can be regulated freely when refloating of a sunken matter is started. Since an opening is made through the bottom of the air bag 1, excessive air can be released therethrough thereby the volume of the air bag 1 can be made constant during refloating work of a sunken matter. Consequently, the floating force and the floating speed are made constant, resulting in a safe and economic refloating device.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a floating body device for raising sunken objects.

[Conventional technology]

As a floating body device for lifting up settled objects during underwater work,
Conventionally, for example, as shown in the side view of FIG.
The metal fitting 0 is used to attach the steel cable 020 that is locked to the eye 019 of 8.
There is one in which compressed air is forced into a completely closed air bag 01 connected via a rubber balloon 21 and expands and contracts like a rubber balloon through a compressed air hose 022, and the buoyancy is adjusted by the amount of compressed air.

However, in such a device, as shown in the partial side view of FIG.
As the water pressure decreases and the air inside the air bladder 01 expands, the buoyancy of the air bladder 01 increases and the buoyancy of the air bladder 01 increases. It is very dog-like around WL, and has the following drawbacks.

(1) Since a large impact acts on the steel cable 020 suspending the submerged object 018, there is a risk that the steel cable 020 may be cut.

(21 Subsidence 018 is subjected to a large impact, so there is a tendency for it to be damaged.

[Problem that the invention seeks to solve]

The present invention was proposed in view of these circumstances, and
It is an object of the present invention to provide a safe and economical buoyancy device for raising sunken objects, which has constant buoyancy during levitation and therefore has a constant levitation speed.

[Means for solving problems]

To this end, the present invention provides a submerged object having an air bag that can be expanded underwater, a compressed air hose that presses compressed air into the air bag, and a metal fitting for connecting a cable to connect the air bag and the submerged object. A buoyant body device for separate lifting includes an air bag with a bellows structure that is vertically expandable and closed at the top end and open at the bottom, and a side vertical frame in which the air bag is inserted and the top of the air bag is fixed to a top framework. A horizontal annular metal fitting attached to the lower end of the air bag is inserted through the bottom frame so as to be able to rise and fall freely in the vertical direction, and a cable connecting underwater sediment is attached to the outer frame with a protruding metal fitting, and a horizontal annular metal fitting attached to the horizontal annular metal fitting is inserted into the bottom frame. It is characterized in that the side vertical framework is provided with a plurality of stoppers that can be freely calibrated.

[For production]

With the above-mentioned configuration, (1) Since the air bag has a bellows structure that can be expanded and contracted vertically, the capacity of the air bag at the time of starting lifting of settled objects can be freely adjusted.

(The air bag 21 has an opening at the bottom through which overpressure compressed air can escape, so the capacity of the air bag can be kept constant during lifting of settled objects.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a perspective view thereof, Fig. 2 is a partial longitudinal sectional side view of Fig. 1, Fig. 3 is a partially enlarged view of part I of Fig. 2, and Fig. 4 , and 5 are horizontal cross-sectional views along IV-IV in FIG. 3, FIG. 4 shows the automatic outer frame blow-off device in a loosened state, and FIG. 5 shows the automatic outer frame blow-off device in a loosened state. Indicates a tight state. FIG. 6 is a partially longitudinal side view showing the floating state of FIG. 2.

In the above figure, the same symbols as in Figs. 7 and 8 indicate the same members as in the same figure, 1 is a bottomless air bag with a bellows structure, the upper end is closed, and the lower end is vertically expandable, and 2 is an air bag. A ring-shaped lower end frame attached to the lower end of 1; 3 is a cylindrical outer frame into which the air bag 1 is inserted; the top surface of the air bag 1 is fixed to the top of the cylindrical outer frame 3; The vertical framework 4 of the frame 3 is inserted through the lower end frame 2, and the lower end frame 2 is guided by the vertical framework 4 and is movable up and down.

5 is a float attached to the lower end frame 2, 6 is a stop lever mounting seat attached to the bottom surface of the lower end frame 2, and a calibration lever 8 is pivoted to one end of the stop lever mounting seat B via a bottle 7. Semicircular blow stop grooves 9 and 10 are respectively recessed near the pin Z on the facing surface of the blow stop lever mounting seat 6 and the calibration lever 8, and a tension coil spring 11 is suspended in the center. , an expander 12 is sandwiched at the other end.

Reference numeral 13 indicates an air branch pipe that supplies compressed air to the expander 12 located at the blow stop lever mounting seat B through the compressed air hose 022 and the air distributor 14. Reference numeral 15 indicates an automatic outer frame blower constructed by the cooperation of 6 to 14. A locking device 16 is a steel cable 02 locked to a submerged object 018
An eye fitting 17 protruding from the lower end of the cylindrical outer frame 3 to connect the upper end of the cylindrical outer frame 3 is a bubble.

In such a device, first, the device is removed from the sediment 018.
In order to attach the air bag 1 to the sink, the air bag 1 is contracted to lose its buoyancy, and is allowed to sink into the water, which is then connected to the submerged object 018 via a steel cable 020.

Next, in order to pull up the settled object 018, as shown in FIG. As shown in Figures 3 and 4, the lower end frame 2 is lowered along the vertical frame 4, and when the settled matter 018 (not shown) begins to float, the injection of compressed air is stopped.

Then, the extender 12, which had been extended by air pressure, is compressed by the action of the tension coil spring 11, and as shown in FIG. 5, the stop lever 8 moves the lower end frame 2 (see FIG. 3) into a vertical frame. 4, as shown in Figure 6, the air bag 1 continues to rise with the submerged object suspended, and the air expanding inside the air bag 1 due to the decrease in water pressure is released into the air bubbles 17 from its lower opening. and flows out, so the air capacity of air bag 1 remains unchanged.
Its buoyancy is constant, and therefore its ascent speed is constant.

If the weight of the sunken object is known, adjust the air bag 1 by extending the air capacity corresponding to the surfacing of the sunk object, and then move the lower end frame 2 to the vertical frame 4 via the automatic outer frame blow-off device 15.
Then, compressed air is supplied to the air bag 1 through the compressed air hose 022 to provide buoyancy.

According to such a device, since the floating speed is constant, the following effects can be achieved.

(1) Since no large impact force is applied to the steel cables suspending the submerged objects, they are safe because they are not used to being cut.

(2) Since a large impact does not act on the submerged object, it is less likely to be damaged and is economical.

(3) If the weight of the sediment is known,
Even in unknown situations, the necessary buoyancy can be automatically adjusted, allowing for more efficient work.

〔Effect of the invention〕

In short, according to the present invention, an air bladder inflatable in water, a compressed air hose for pressurizing compressed air into the air bladder,
In a buoyancy body device for lifting a sunken object, the cable connecting the air bag and the sunken object has a metal fitting; An air bag is inserted, and the top of the air bag is fixed to the top framework, and a horizontal annular metal fitting attached to the bottom end of the air bag is inserted into the side vertical framework so as to be able to rise and fall freely in the vertical direction, and a cable for connecting submerged objects in the water is inserted into the bottom framework. Attached is an outer frame with protruding metal fittings,
By equipping the horizontal annular fitting with a plurality of calibrated stoppers attached to the side vertical framework, the buoyancy during levitation is constant, and therefore the levitation speed is constant, making it a safe and economical method for separating sinking objects. The present invention is industrially extremely useful because it provides a buoyant device for lifting.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
Figure 6 is a partial enlarged view of the section ■ in Figure 2, Figures 4 and 5 are horizontal sectional views taken along IV-IV in Figure 3, and Figure 4 is a partial longitudinal sectional side view of the figure. The outer frame blow-off device is shown in a relaxed state, and FIG. 5 shows the automatic outer frame blow-off device in a tightened state. FIG. 6 is a partially longitudinal side view showing the floating state of FIG. 2. FIG. 7 is a side view showing a known buoyancy device for raising submerged objects, and FIG. 8 is a side view showing a state in which the air bag shown in FIG. 7 is inflated as it floats. 1... Air bag, 2... Lower end frame, 3... Cylindrical outer frame. 4... Vertical frame, 5... 7t: I-to, 6... Calibration lever mounting seat, 7... Bin, 8... Stop lever, 9
, 10... Calibration groove, 11... Tension coil spring, 1
2... Expanding device, 13... Air branch pipe, 14... Air distributor, 15... Automatic outer frame blow-off device, 16... Eye hardware, 17... Air bubble 1 020...・Steel cable, 022...Compressed air hose. Sub-Agent Patent Attorney Masa Tsukamoto Figure 1' Figure 2 Figure 4 Figure 7 On the table

Claims (1)

[Scope of Claims] A submerged object that has an air bladder that can be expanded underwater, a compressed air hose that presses compressed air into the air bladder, and a cable attachment fitting that connects the air bladder and the submerged object. A lifting buoyancy device includes an air bag having a bellows structure that is vertically expandable and closed at the top end and open at the bottom, and a vertical frame in which the top of the air bag is fixed to a top frame into which the air bag is inserted. A horizontal annular metal fitting attached to the lower end of the air bag is inserted through the air bag so as to be able to rise and fall freely in the vertical direction, and an outer frame has a submerged object connecting rope attachment fitting protruding from the bottom framework, and an outer frame attached to the horizontal annular metal fitting and the side part A buoyant device for lifting sunken objects, characterized by having a vertical framework and a plurality of stoppers that can be freely calibrated.