JPS62275893A - Automatic depth adjusting device for buoyancy body moored under water - Google Patents

Abstract

PURPOSE:To ensure mooring at a desired depth automatically by disengaging a buoyancy body from an anchor after a specified time elapses since a starting switch has been turned on whereby suspending a rotating drum with a pressure switch actuated when floating upto a predetermined depth is accomplished. CONSTITUTION:When an observation buoy 1 connected with the rod 10 of an air cylinder 9 through perforated plates 5 and 8 and an anchor 2 are dropped down into the sea with a starting switch turned on, after a predetermined time by a timing device elapses, a solenoid valve 27 is opened for feeding pressure air to the air cylinder 9 from a tank 24 so as to release the connection by the rod 10. As a result, the buoy 10 floats up while feeding a cable 13 from a rotating drum 14, and when a pressure switch 4 is actuated where a specified depth is accomplished, its signal permits a solenoid valve 28 to open through the cable 13 for protruding the rod 21 of an air cylinder 20 so as to suspend the rotation of the rotating drum 14 thereby holding the buoy at a predetermined depth. Owing to this constitution, the buoyancy body can be automatically and accurately moored at a desired depth.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Application Field The present invention relates to an automatic depth adjustment device for underwater moored buoyant bodies, and more specifically, to an automatic depth adjustment device for an underwater moored buoyant body, and more specifically, for an automatic depth adjustment device for an underwater moored buoyant body, and more specifically, for an automatic depth adjustment device for an underwater moored buoyant body. The present invention relates to a device for mooring a buoyant body moored in water by a mooring rope to a desired depth in a self-help manner.

Conventional technology and its problems For example, when mooring an observation buoy underwater, conventionally, after surveying the water depth at the location where the buoy is installed, the anchor and buoy are tied to a certain length depending on the water depth and the target mooring depth of the buoy. The buoy was moored at the desired depth. However, in this case, if the water depth of the buoy installation location or the target value of the buoy's mooring depth changed, the required length of the mooring rope also changed, so it was necessary to cut the mooring rope to the required length or replace it each time. . Moreover, unless the water depth is accurately known, it is impossible to moor the buoy at the desired depth.
It is especially difficult to be accurate in places where the bottom of the water is uneven or has a large slope.

The purpose of this invention is to solve the above problems and automatically and accurately move the buoyant body even if the water depth of the buoyant body installation location or the target value of the mooring depth of the buoyant body changes, or even if the water depth is not accurately known. To provide an automatic depth adjustment device for an underwater mooring floating body that can be moored at a desired depth and does not require cutting or replacing mooring lines.

Means for Solving the Problems In the device according to the present invention, an anchor sunk to the bottom of the water and a buoyant body moored in the water are connected by a mooring cable. are connected by a mooring line, and the buoyant body is provided with a pressure switch that operates when the water pressure reaches a set value, the signal line is passed through the mooring line, and the buoyant body is connected to the anchor. A coupling device, a rotating drum around which a mooring line is wound, a drum holding device for holding the rotating drum in a stopped state, a timer that operates after a predetermined period of time has elapsed after the start switch is turned on, and a timer that operates when the timer is activated. A control device that operates a coupling device to separate the buoyant body from the anchor, lets the mooring line out from the rotating drum to levitate the buoyant body, and operates a drum holding device to stop the rotating drum when the pressure switch is activated. It is characterized by being provided with.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. In the following description, left and right refer to FIG. 1.

FIG. 1 shows an observation buoy (underwater mooring buoyant body) (1) and an anchor (2) for mooring it underwater, which are connected by a mooring line (3).

The buoy (1) has a watertight cylindrical shape, and its peripheral wall (1a) extends slightly below the bottom wall (1b). A pressure switch (4) is provided on the bottom wall (1b) of the buoy (1).

This pressure switch (4) operates when the water pressure reaches a set value, and this set value is adjustable. Also,
The bottom wall (1b) of the buoy (1) has a perforated plate (
5) is fixed.

Furthermore, although not shown in the drawings, the buoy (1) houses a sensor and a recorder for observing, for example, the speed and direction of currents, water temperature, etc. at a certain depth in the sea.

The anchor (2) also has a watertight cylindrical shape, and a short cylindrical part (2b) is formed around the top wall (2a) to fit into the lower end of the peripheral wall (1a) of the buoy (1) when connected. Also, the top wall (
2a) is provided with an opening (6).

A horizontal partition wall (2C) is provided inside the anchor (2), and a sealed compartment (2C) is provided between the partition wall (2C) and the bottom wall (2d).
7) is formed. A pair of left and right perforated plates (8) that sandwich the perforated plate (5) of the buoy (1) during connection are fixed to the upper surface of the top wall (2a), and a first air cylinder (connection The bag (9) is installed facing left.And inside this cylinder (9), there is a piston rond (1).
A compression coil spring (1
1) is provided. Anchor (2) partition wall (2C
) A drum shaft (13) extending horizontally from side to side is rotatably supported by a pair of left and right bearings (12) fixed to the left upper surface of the drum (14), and a drum (14) is fixed to this shaft (13). A mooring cable (3) is wound around this drum (14), one end of the cable (3) passes through the drum (14) and is connected to the drum shaft (13), and the other end is attached to the top wall (2a). opening (6)
Seal hardware (15) on the bottom wall (1b) of the buoy (1) through
)It is connected to the. The mooring line (3) has a plurality of reinforcements (16) and a pressure switch (4), as shown in detail in Figure 2.
) The signal wire (17) is passed inside the water-resistant covering material (18). Signal I! 1t (17) is the wire core (17
a) and an insulating material (17b), one end of which is connected to the pressure switch (4), and the other end connected to a slip ring (19) installed in the left bearing (12). . Further, a square pyramid portion (13a) is formed at the right end of the drum shaft (13) that slightly protrudes from the right bearing (12). A second air cylinder (drum holding device) (20) is installed facing left on the upper surface of the partition wall (2C) on the right side of the drum (14). The piston rod (21) of this cylinder (20) has a rectangular column shape.
) is provided with a guide (35) that guides the piston rod (21) so that it does not rotate. The left end surface of the piston rod (21) has a drum shaft (1
The square pyramid-shaped hole (22) into which the square pyramid part (13a) of 3) fits
) is formed.

Moreover, inside the cylinder (20), a piston rod (21
) is pressed in the direction of retracting to the right.
3) is provided. Sealed compartment (7) of anchor (2)
) A compressed air tank (24) is installed in the chamber on the left side of the first cylinder (9) and the second cylinder (
20) through air pipes (25026). A solenoid valve (27) (28) is attached to each air pipe (25H26), and a seal (29) is provided at the part where each air pipe (25) (26) penetrates the partition wall (2C). It is being Closed compartment (7)
Also provided inside are a battery (30), a timer (31) and a control device (32). Timing device (31
) is equipped with a manual start switch (33) (see Fig. 3), which is activated when the switch (33) is turned on and a predetermined period of time elapses. Note that this time can also be adjusted. The control device (32) is connected to a battery (30), a timer (31), a slip ring (19) and a solenoid valve (27) (2B), and as described below, a timer (31) and a pressure switch. Based on the output of (4), solenoid valve (27) (2
8) That is, control the cylinders (9) and (20).

Next, with reference to Figures 1, 3 and 4, the buoy (
The operation of the automatic depth adjustment device when installing 1) will be explained.

Before putting the buoy (1) into the sea, be sure to turn off the start switch (33
) is off, and the solenoid valves (27) and (28) are closed. Then, buoy (1) and anchor (
2) are connected in a forest-like manner. That is, the anchor (
The short cylindrical part (2b) of 2) is fitted into the lower end of the peripheral wall (1a) of the buoy (1), and the perforated plate (8) of the anchor (2) connects the perforated plate (5) of the buoy (1). The piston rod (10) and spring (11) of the first cylinder (9) advance to the left and penetrate through these perforated plates (5) and (8). Further, the piston rod (21) of the second cylinder (20) is moved to the right by the spring (23) and separated from the drum shaft (13), and the drum (14) is in a state where it can freely rotate. At this time, the cable (3) is wound around the drum (14) so that the amount of cable (3) let out is minimized. Further, the timer (31) is set to a desired time, and the set value of the pressure switch (4) is adjusted to the water pressure corresponding to the target value of the mooring depth.

The buoy (1) and anchor (2) connected in this way are
After turning on the start switch (33), it is dropped onto the sea surface, and it lands on the seabed CB) by the anchor (2) ff1ffi. The timer (31) is a start switch (
33) is turned on, but when the buoy (1
) and the anchor (2) reach the bottom, the timer (31) operates after the anchor (2) hits the bottom. The timer (31) operates and its contacts (31a
) closes, the first solenoid valve (27) listens and the tank (24
) is supplied to the first cylinder (9), the piston (10) moves to the right and the perforated plate (5
) (8). As a result, the buoy (1) is separated from the anchor (2), and the buoyant force acting on it separates the buoy (1) from the anchor (2).
3) Float to the surface while paying out. As the buoy (1) rises, the water pressure acting on it decreases, and when this decreases to a set value, the pressure switch (4) is activated.

When the pressure switch (4) operates and its contacts (4a) close, the relay (34) is energized and its contacts (34a) close.
, the second solenoid valve (28) opens. This allows the compressed air in the tank (24) to flow into the second cylinder (20).
The piston rod (21) moves to the left and its hole (22) is connected to the square pyramid part (13a) of the drum shaft (13).
). For this reason, the drum (14) is stopped and held in a stopped state, the cable (3) stops being fed out, and the buoy (
1) is held at the desired depth.

The mooring depth of the buoy (1) can be arbitrarily changed by adjusting the set value of the pressure switch (4).

Therefore, there is enough mold cord (3) for the rotating drum (14).
If you wrap the buoy (
Even if the target value of the mooring depth in 1) changes or even if the water depth is not accurately known, the buoy (1) can always be accurately moored at the desired depth, and the mooring line can be cut as usual. There is no need to replace or replace it.

Effects of the Invention Since the device according to the present invention has the above-described configuration, even if the water depth at the location where the buoyant body is installed or the target value of the mooring depth of the buoyant body changes, or even if the water depth is not accurately known, the buoyant body can be automatically moved. It can be moored to the desired depth with ease and accuracy, and there is no need to cut or replace the mooring line.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view showing a part of the observation buoy and the anchor, FIG. 2 is a cross-sectional view of the mooring line, FIG. 3 is an electrical system diagram, and FIG. The figures are front views showing the behavior of the observation buoy and anchor in order when the observation buoy is installed. (1) ...vAiII! l-fit (underwater mooring 1ii1 force body), (2)...Anchor, (3)...Mooring line, (4)...Pressure switch, (9)...Air cylinder (connection device>, ( 14)...Rotating drum, (17
)...Signal line, (20)...Air cylinder (drum holding device), (31)...Timer, (32)...
- Control tIIl device, (33)...Start switch. that's all

Claims (1)

[Claims] An anchor (2) sunk to the bottom of the water and a buoyant body (1) moored in the water are connected by a mooring line (3), and a pressure switch is attached to the buoyant body (1) that operates when the water pressure reaches a set value. (4), whose signal line (17) is passed through the mooring line (3), and the anchor (2) is connected to the buoyant body (
1), a rotating drum (14) around which the mooring line (3) is wound, a drum holding device (20) for holding the rotating drum (14) in a stopped state, and a starting device. A timer (31) operates after a predetermined time has elapsed after the switch (33) is turned on, and when the timer (31) is activated, the buoyant body (1) is connected to the anchor (2) by operating the coupling device (9).
), the mooring line (3) is let out from the rotating drum (14) to float the buoyant body (1), and the pressure switch (4
) is activated, a control device (32) that operates a drum holding device (20) to stop the rotating drum (14) is provided.