JPS6320651B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mooring rope cutting device used for cutting mooring ropes mooring measuring instruments, buoys, etc. underwater.

As shown in Fig. 1, an underwater moored floating body 1 such as a measuring instrument or a buoy is normally moored in the sea by a mooring line 3 connected to a mooring device (weight) 2 placed on the seabed. However, sometimes it becomes necessary to float the floating body 1 to the sea surface and retrieve it. For this reason, conventionally, a cutter 4 is attached to the middle part of the mooring rope 3, and the floating body
When recovering the mooring rope, the cutter 4 is activated to cut the mooring rope 3 by remote control using an acoustic signal or the like. However, the cutter 4 is thrown into the sea together with the floating body 1 and the like while it is attached to the mooring line 3, and it remains attached to the mooring line 3 while the floating body 1 is moored. or during the tie-up,
Due to a malfunction of the cutter 4, the mooring rope 3 may be unexpectedly cut. In place of the cutter 4, a separator that is similarly operated by remote control may be interposed in the middle of the mooring rope, but in this case as well, malfunction of the separator may cause the mooring rope to break at this portion. It may be separated into upper and lower parts.

Also known is a mooring rope cutting device that is attached to a minesweeping rope pulled by a helicopter or the like, and when the mooring rope is caught, it fires a cutter with an explosion of gunpowder to cut the mooring rope. 52-26346).
However, since this device is attached to a minesweeping line pulled by a helicopter or the like, it is difficult to move it freely underwater, especially when a large number of floating bodies are moored. It is difficult to cut only one part. Moreover, since the cutter is simply fired toward the cable introduced into the cable receiving section, cutting of the cable is uncertain.

An object of the present invention is to solve the above-mentioned problems, to be able to reliably cut the target mooring rope only when necessary, and to cut the mooring rope without fear of cutting the mooring rope due to malfunction. The goal is to provide equipment.

The mooring line cutting device according to the present invention has a main body that is detachably attached to the front part of an underwater vehicle, and a cable holding part that extends diagonally forward from the side of the main body and has a forward-facing pressure receiving surface at the rear. A guide, a rope holder that moves rearward by a spring when the tether rope enters the rope holder and holds the tether between it and a pressure receiving surface of the tether holder, and a pressure receiving surface of the rope holder. It is equipped with a cutter that cuts the mooring rope held by the rope holder by colliding with a surface, and a control device that operates the cutter based on internal or external signals.

In this specification, the term mooring rope is used as a general term for ropes, chains, etc. used for mooring underwater fiber floating bodies underwater.

When lifting and retrieving an underwater moored floating body, the mooring line cutting device is attached to the front of the underwater vehicle and moves freely underwater to approach the target mooring line. When the mooring rope is guided by the guide and enters the rope holding section, the rope holder moves rearward by the spring to sandwich and hold the mooring rope between it and the pressure receiving surface of the rope holding section. When the mooring rope is held by the rope holder, the control device activates the cutter by remote control using an external acoustic signal or by an internal timer, and the cutter is placed on the pressure-receiving surface of the rope holder. Collision occurs to reliably cut the mooring rope held by the rope holder. After the mooring rope is held by the rope holder, the mooring rope cutting device will not be separated from the mooring rope, so the mooring rope cutting device is separated from the underwater vehicle and the mooring rope is then cut off. Can be cut. In this case, the cutting device may be a disposable device that separates from the mooring rope on the floating body side and sinks to the bottom of the water after cutting the mooring rope, or the cutting device after cutting the mooring rope can be attached to the floating body by a rope holder. The fiber may be recovered by floating on the water surface together with the floating body while holding the fibers.

Since the mooring rope cutting device according to the present invention has the above-described configuration, it is possible to hold and reliably cut the target mooring rope when necessary, and when inserting an underwater mooring fiber floating body or cutting the mooring rope. Since there is no need to attach a cutting device to the mooring rope, there is no risk of the mooring rope being cut due to malfunction.

That is, since the main body of the mooring rope cutting device is attached to the front part of the underwater vehicle, it can move freely underwater and cut only the desired mooring rope. In addition, when the mooring rope enters the rope holding section, it is equipped with a rope retainer that moves rearward by a spring and holds the mooring rope between it and the pressure-receiving surface of the rope holding section. After the mooring line is held by the device, the mooring line cutting device is separated from the underwater vehicle.
Able to cut tethers. Furthermore, since a cutter is provided that collides with the pressure-receiving surface of the rope holding portion to cut the mooring rope held by the rope holder, the mooring rope can be surely cut.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 7.

Figures 2 and 3 show the mooring device 1 placed on the seabed.
0, an underwater moored floating body 12 that is moored in the sea by a mooring rope 11, and an unmanned underwater vehicle 13.
As shown in detail in FIGS. 4 to 7, the mooring line cutting device 14 is shown in use and is attached to the front part of the vehicle 13. A guide 16 for the mooring rope 11, a rope holder 17, a cutter 118, a control device 19 for the cutter 18, and the like are provided on the main body 15.

The main body 15 of the cutting device 14 consists of a control device housing section (right section) 20 on the right side, and a support section (left section) 21 for the rope holder 17 and cutter 18 on the left side. The right part 20 of the main body has a long closed box shape from front to back, and inside thereof, a battery 22, an acoustic signal transducer 23,
A control device 19 for the cutter 18 is provided, which includes an amplifier 24 and a timing device 25 and the like. A horizontal cylindrical connecting projection 26 is integrally provided on the rear end surface of the right portion 20 of the main body, and a connecting recess 27 is formed on the left side surface of this projection 26. The main body left part 21 is fixed to the left side surface of the main body right part 20 except for the rear part, and in this part, the left side lower part of the main body right part 20 extends slightly to the left and enters the right lower part of the main body left part 21. There is. The left part 21 of the main body is also long in the front and back, and its front end protrudes slightly forward than the right part 20 of the main body.
The height of the left part 21 of the main body excluding this part is the height of the right part 2 of the main body.
Almost equal to the height of 0. The rear left side surface of the left part 21 of the main body serves as a vertical cable guide surface 28, and the portion in front of this is slightly overhanging to the left.

The guide 16 of the mooring rope 11 is housed in a fixed guide plate 29 fixed to the rear end surface of the left part 21 of the main body and the left side of the right part 20 of the main body and whose front part extends diagonally forward to the left, and in the front end of the fixed guide plate 29. It consists of a plurality of telescopic guide plates 30. The fixed guide plate 29 is located on the left side of the main body 2.
It protrudes slightly to the left from the cable guide surface 28 of No. 1 at a right angle, bends forward at a right angle, and further extends diagonally forward to the left. The heights of the fixed guide plate 29 and the telescopic guide plate 30 are approximately equal to the height of the main body 15. The front surface of the portion of the fixed guide plate 29 that protrudes to the left from the cable guide surface 28 on the left side 21 of the main body is connected to the cable retainer 17 and the cutter 18.
It serves as a vertical pressure receiving surface 31 for receiving pressure.
The right side of the front part is the vertical cable guide surface 3
It has become 2. A portion surrounded by the pressure receiving surface 31 and opposing cable guide surfaces 28 and 32 on both left and right sides in front of the pressure receiving surface 31 serves as a cable holding portion 33 . The horizontal width of the cable holding part 33 is larger than the diameter of the tether 11, and the minimum distance between the left side projecting part 34 of the left part 21 of the main body and the fixed guide plate 29 is also larger than the diameter of the tether 11. Further, a plunger guide hole 35 is provided at the upper right side of the rear end of the fixed guide plate 29, and extends through the fixed guide plate 29 back and forth. A plunger passage 36 that extends forward following the plunger guide hole 35 of the guide 16 is provided at the upper part of the left part 21 of the main body. A cable holder storage recess 37 is provided which is connected to the cable holder and has an open rear end. The portion of the passage 36 on the rear side of the recess 37 is open to the left at the cable guide surface 28, and the portion on the front side of the recess 37 is a guide hole portion 38 with a closed front end. A guide block 39 is fitted into the rear end of the passage 36, and this block 39 is provided with a plunger guide hole 40 that extends forward from the plunger guide hole 35 of the guide 16 and passes through it. Guide block 3
The left side surface of 9 is substantially flush with the cable guide surface 28 of the left portion 21 of the main body. The plunger 41, which is long from front to back, is the passage 3.
6 so as to be movable back and forth, and the plunger 41
A cable holder 17 is fixed to the left side of the middle part of the cable.
The cable retainer 17 extends obliquely to the left rearward and then extends straight rearward to face the upper part of the pressure receiving surface 31 of the guide 16, and the left and right width of the rear part of the cable retainer 17 is equal to the cable retainer 3.
Slightly smaller than the left and right width of 3. When the plunger 41 moves forward, the rear end is located in the guide hole 40 of the block 39, and the rope retainer 17 is stored in the recess 37, and when the plunger 41 moves backward, The block 39 and the guide hole 40 of the guide 16,
35 and protrudes rearward, and the rope retainer 1
7 enters the cable holding section 33. An elongated spring storage hole 42 is provided in the front end surface of the plunger 41, and a compression coil spring 43 fitted into this hole 42 is pressed against the bottom of this hole 42 and a spring receiver 44 fixed to the front end of the guide hole 38. plunger 41
is biased backwards. A recess 45 is provided on the left side of the rear end of the plunger 41, and a locking pin 46 elongated from side to side is inserted into the fixed guide plate 29 on both sides of the cable holding part 33 and the left wall of the guide block 39 from the left side. , its right end slightly protrudes into the plunger guide hole 40 of the block 39. The plunger 41 has a cable retainer 17 in a recess 37.
The locking pin 46 is moved forward against the spring 43 so as to be housed in the locking pin 46, and is fixed at this position by fitting the right end of the locking pin 46 into the recess 45 at the rear end.

A cutter guide hole 47 with an open rear end located directly below the cable holder storage recess 37 is provided at the lower part of the left protrusion 34 of the left part 21 of the main body. A hole 48 and a chamber 49 are subsequently provided. A cutter 18 having a blade 50 formed at its rear end facing the lower part of the pressure receiving surface 31 of the guide 16 is inserted into the guide hole 47 from the rear side,
It is fixed by a shear pin 51 that penetrates the left side wall of the hole 47 and the front part of the cutter 18 from the left side of the left side projecting part 34 and enters the right side wall of the hole 47. The horizontal width of the cutting device 18 is slightly smaller than the horizontal width of the rope holding portion 33, and the cutting device 18 can enter the rope holding portion 33 using the guide hole 47 and the guide surfaces 28, 32 on both sides of the rope holding portion 33 as guides. It's becoming like that. An electric detonator 52 is attached to the front end surface of the cutter 18 and protrudes into the chamber 49 through the hole 48. Although not shown, the detonator 52 is connected to the control device 19.

The underwater vehicle 13 is connected to a guidance cable 53 delivered from an observation ship or the like, and can freely navigate underwater in response to commands from the ship. A cylindrical connecting portion 54 that projects horizontally forward is provided at the lower left side of the front end of the vehicle 13 . A protrusion 55 is provided on the front end surface of the connecting portion 54, and the protrusion 55 has a right half extending forward.
A connecting member 56, which is the left half of the connecting portion 54 extended forward, is attached to the lower end of the connecting member 56 by a hinge 57 so as to be openable and closable. A groove 58 into which the right half of the connecting protrusion 26 of the cutting device 14 fits is formed on the left side of the protrusion 55, and a groove 59 into which the left half of the connecting protrusion 26 fits into the right side of the connecting member 56. There is. A protrusion 60 is provided on the inner wall surface of the groove 59 of the connecting member 56, and a recess 61 is provided on the upper rear end surface of the connecting member 56. Further, a horizontal hydraulic cylinder 62 is fixed to the upper left side of the connecting portion 54 so as to face forward, and although not shown in the drawing,
Inside, a hydraulic cylinder 62 is activated according to commands from the ship.
A hydraulic device is installed to operate the system. By operating the hydraulic cylinder 62, the rod 63 can advance forward from the front end surface of the connecting portion 54 or retreat backward from this surface. When attaching the cutting device 14 to the vehicle 13, first, the rod 63 of the hydraulic cylinder 62 is retracted backward from the front end surface of the connecting portion 54, and the connecting member 56 is opened, and then the connecting protrusion 26 of the cutting device 14 is attached. The right half of the groove 5 of the protrusion 55 of the navigation body 13
Put it in 8. Next, the connecting member 56 is closed, and the left half of the connecting protrusion 26 is fitted into the groove 59, and the protrusion 60 of the connecting member 56 is fitted into the recess 27 of the connecting protrusion 26, and the connecting protrusion 26 is inserted into the connecting member. 56 and the protrusion 55. Finally, the rod 63 of the hydraulic cylinder 62 is advanced forward from the front end surface of the connecting portion 54 and fitted into the recess 61 of the connecting member 56, thereby fixing the connecting member 56 in the closed state. When separating the cutting device 14 from the vehicle 13, the rod 63 of the hydraulic cylinder 62 is moved backward from the front end surface of the connecting portion 54, and the connecting member 5 is removed.
6 from the recess 61. In this way, the connecting member 56 separates from the connecting protrusion 26 of the cutting device 14 due to its own weight and opens downward, and the connecting protrusion 26 is released from between the connecting member 56 and the protruding portion 55 and can be freely separated. become.

When lifting and retrieving the underwater moored floating body 12, first, on board the ship, attach the cutting device 14 to the vessel 13 as described above, and remove the telescopic guide plate 30 that has been compressed and stored in the fixed guide plate 29. stretch. and,
In this state, the vessel 13 is thrown into the sea, and the ship and the vessel 13 are moved while searching for the floating body 12 using a detector mounted on the ship.

When the target floating body 12 is found, the craft 13 is cut so that the guide 16 of the cutting device 14 hits the mooring rope 11.
is advanced, and the mooring rope 11 is placed into the rope holding part 33 along the guide 16. The mooring rope 11 is attached to the rope holding section 3
3, it hits the locking pin 46, and the locking pin 46 is bent by the tension on the locking rope 11. As a result, the locking pin 46 comes off from the recess 45 of the plunger 41, the cable holding part 17 moves rearward by the spring 43 and enters the cable holding part 33, and the cable holder 17 is disposed between the locking pin 46 and the pressure receiving surface 31 of the guide 16. 11 and hold it. At this time, the movement of the plunger 41 is detected by a suitable detector, and as a result, the timer 25 starts timing, and an acoustic signal is sent from the transducer 23 to the ship. Then, according to orders from the ship,
As described above, the hydraulic cylinder 62 is operated to separate the cutting device 14 from the vehicle 13, and the vehicle 13 is moved to a position sufficiently away from the cutting device 14.

When a certain period of time has elapsed after the mooring rope 11 was held by the rope holder 17, the timer 25 operates and the detonator 52 of the cutter 18 is activated to explode the gunpowder. As a result, the cutter 18 shears the shear pin 51 and enters the rope holding section 33 at high speed, collides with the pressure receiving surface 31 of the guide 16, and cuts the mooring rope 11. When the mooring rope 11 is cut, the floating body 12 floats to the sea surface, and the cutting device 14 is cut by its own weight.
It separates from the mooring line 11 and sinks to the sea floor.

The timing device 25 may start timing when the cutting device 14 is separated from the vehicle 13. Further, the detonator 52 of the cutter 18 may be activated not by the timer 25 but by an acoustic signal from the ship or the like.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional underwater fiber floating body;
FIGS. 2 to 7 show embodiments of this invention, and FIG.
The figure is a side view of a mooring line cutting device attached to an underwater mooring floating body and an unmanned underwater towing body, FIG. 3 is a plan view of the same, and FIG. Cutaway side view, Figures 5, 6 and 7
The figures are cross-sectional views taken along lines -, -, and -, respectively, in Fig. 4. DESCRIPTION OF SYMBOLS 11... Mooring rope, 13... Underwater vehicle, 14... Mooring rope cutting device, 15... Main body, 16... Guide, 17...
Cable holder, 18... Cutting device, 19... Control device, 31
...Pressure receiving surface, 33... Cable holding part, 43... Spring.

Claims (1)

[Claims] 1. A main body 15 that is detachably attached to the front part of the underwater vehicle 13, and a guide 16 having a cable holding part 33 extending obliquely forward from the side surface of the main body 15 and having a forward-facing pressure receiving surface 31 formed at the rear thereof; When the mooring rope 11 enters the rope holding section 33, the rope holder 17 moves backward by the spring 43 and holds the mooring rope 11 between it and the pressure receiving surface 31 of the rope holding section 33; A cutter 18 that collides with the pressure receiving surface 31 of the holding part 33 and cuts the mooring rope 11 held by the rope holder 17
and cutter 1 based on internal or external signals.
A control device 19 for operating a mooring rope cutting device.