DE2533600A1 - VEHICLE AND DEVICE FOR RECOVERING BUOYS AND ANCHORS AT SEA - Google Patents

Description

The invention relates to a device for recovery floating objects at sea, for example anchor and seismic buoys. The device according to the invention can be used for Pick up any floating object at sea, for example a buoy, can be used to do so underwater located object, for example an anchor arranged on a buoy, to be picked up or to be retrieved or in a new one To take position or, to put it more simply, to pick up or rescue and retrieve freely floating objects.

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Anchor buoys, for example, are used to mark the anchor of a pipe laying ship that on the one hand uses the anchors for example for its positioning and course keeping pulls it up while laying the pipe. During the As the pipes are laid, it becomes necessary from time to time to reposition the ship's anchors. This is because of this managed that the anchor added by means of ropes or other hanging, attached to the anchor connections The connections are still made by buoys floating on the surface. Usually they are pneumatic Used buoys with a central hawser through which the rope or hanging link passes. The anchors are then repositioned, with the buoys again marking the new position of the anchors.

Taking pictures of a floating object at sea becomes increasingly difficult as the sea conditions deteriorate. Picking up is dangerous if, during the rescue operation, teams are in the area of the railing of a seafarer Ship or vehicle must be present. In a method for recovering buoys, a projecting beyond one side is Device used with a tree and / or a winch to capture the buoy and reorient the anchor. This arrangement causes difficulties in positioning the ship. Since steering when the sea is high is particularly difficult, the effectiveness of this device is greatly reduced when it is needed most. Furthermore, there is an additional disadvantage with this

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Procedure that is due to the parallax effect of the opposite the center line of the ship displaced recovery device is effected. This ensures the exact arrangement of the rescue device More difficult designed because the direction of travel of the ship and the offset visually The track of the device must be observed, whereby the influence of wind and water must also be taken into account.

Another known method is to simply have a member of the crew place a hook on the floating Attaches object and that this is then recovered with a tree and / or a winch. This procedure is natural extremely difficult for the respective operator and becomes increasingly dangerous and difficult with increasing Intensity of the swell.

According to the invention a device for the recovery of Objects floating at sea, in particular anchor buoys, are proposed. The device according to the invention increases by reducing the personnel required for the rescue operation, the performance of the personnel-ship combination. This result is achieved by a novel device for retrieving floating objects, in which a minimum manual work up to and including fastening the object to the mechanical device of the recovery device is required.

The invention is directed to a device for recovering objects

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stands at sea with a catamaran ship and a mechanical recovery device for picking up floating ones Objects directed. The catamaran is preferably designed to be sea-going, so that it can be used in bad weather conditions and can be operated at sea and has the advantage of being operational on more days than before per unit of time. the Catamaran or two-hull design has advantages over a conventional hull design and is special Significance for the invention; This execution is so far important as the receiving device according to the invention between the hulls can be provided in a relatively protected area. This location is ideal for recovering buoys.

According to the invention, a device for recovering buoys at sea has a catamaran which has a recovery device which is adjustable between the hulls and with which a floating Object caught on the surface of the water, held and raised to deck level to facilitate its recovery can be,. As the rescue device can be adjusted, it can be arranged at different heights between the hulls

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so that there are buoys with different buoyancy and different training as with different buoyancy of the ship depending on the cargo or can be used with the fuel of the ship.

The rescue device is preferably arranged symmetrically between the catamaran hulls and preferably has a structure with a relatively open linkage in order to prevent the flow resistance.

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stand low when it is in a salvage position located in the water. Pipe or rod-like parts are used to build the recovery device.

As soon as the recovery device is sufficiently vertical, in order to arrange it in an appropriate water depth for catching the buoy, the ship approaches this for picking up. Since that Recording device is arranged essentially in the region of the center line of the ship, the object must be arranged accordingly for the purpose of recording are merely brought into alignment with this center line.

It is known to those skilled in the art that last-minute corrections in maneuvering a ship of this size along a finite path through the water may be required. Conventional control devices with on the stern of each fuselage Arranged oars do not affect the ship's trajectory fast enough to allow immediate changes of direction, in particular at low speeds of the ship. To avoid this disadvantage and according to a further feature According to the invention, the ship is provided with a bow thrust device which exerts a force perpendicular to the fore part of the ship can exercise to the direction of travel. In this way, the direction of travel of the ship can immediately carry out the Last moment corrections are influenced.

According to a further feature of the invention, the rescue device has a device for holding the buoy in the device. That The rescue device is in a position relative to the ship's waterline.

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tical direction movable so that the holding device is relatively can be arranged at the desired height to the waterline of the ship and the floating object can be captured. Likewise the holding device with a captured object can thereby be positioned in the vicinity of the deck, see above that they enter through the deck crew and recovered the object can be. A recess in the deck above the holding device grants this access. Then a hoist, For example, a crane or the like, can be used on deck to lift the captured object onto the deck. At the Repositioning, anchors, the buoy is caught and lifted to Deek height ä &, where the hanging one runs through the middle of the buoy Jüak leash on a winch or crane for lifting and repositioning the anchor.

The recovery device is preferably on the inner surfaces of the opposite Hulls arranged and has for feeding the floating object into the holding device or the boron jenstuhl guide parts in front of the holding device: In the shown and preferred embodiment, the ones at the front are Ends of the guide parts are hinged in vertically extending rails of the opposite hulls. At the rear Part of the recovery device is a lifting device, so that when the ship is moving and rescue operations are not carried out, the holding device or the buoy chair in the area of the deck - and the stern part from the water hea? can be excavated.

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The device according to the invention is preferably used when recovering anchor buoys when repositioning anchors from laying vessels used. However, the device can also be used to recover such buoys that the end of a Mark the underwater pipeline where work was temporarily interrupted.

Although the preferred embodiment of the invention is described in relation to retrieving or hauling in anchor buoys is, it is readily apparent that the device is designed for the recovery of any floating object at sea can; furthermore for the recovery or repositioning of an underwater device or object, which is carried by a floating Object is highlighted. The various other modifications the device described for these purposes are familiar to the person skilled in the art.

Further details, features and advantages of the invention emerge from the following description of a preferred exemplary embodiment and with reference to the schematic drawing. Show here; Fig. 1 is a perspective view of a

Catamaran tug to display in the area of the center of the ship arranged recovery device, partially cut;

FIG. 2 is a front view of the object of FIG. 1, showing a bow thrust device in the bow of each of the two hulls;

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3 shows a side view of the screw protection device;

Fig. 4 is a plan view of the recovery device for capture of buoys;

Fig. 5 is a side view of the recovery device in two

different positions with the indicated um- ■ * '"" tore a buoy or another salvaged

Object in the salvage position, with a detail of the securing device of the salvage svör direction is shown on the interior fuselage surfaces and

Fig. 6 AH- 6 D representations of the device according to the invention

in a series of working positions that involve recovering an anchor buoy and repositioning a Anchor can occur.

In Fig. 1, a ship or vehicle 10 is shown, which is an embodiment of the invention. It comprises catamaran hulls 11, a deck 13 and the associated superstructures.

The recovery device or recovery device is generally designated by 50. It comprises main girders 23 and a buoy holding device or the buoy chair 19, which catches and carries the buoy. The recovery device 15 is arranged between the catamaran hulls 11 and attached to the inboard surfaces of the hulls so that it is substantially symmetrical about the centerline of the ship is arranged, as can be seen from FIG. The advantage of this training is particularly evident when considering a mode of operation of the ship in rough seas or in unfavorable conditions

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Lighting conditions clearly. The wheelhouse 21 and a steering control console, not shown, are in the vicinity of the Arranged center line. In this way, the alignment of the recovery device 15 along the approach path is closed a floating object greatly simplified by the fact that the device is not outside the center line of the path of the Vehicle lies. It is only necessary for the operator of the ship to know the direction of movement of the ship aligns directly with the desired object. This will then be correctly aligned with respect to the recovery device, so that it is caught in the vicinity of the device.

When the ship approaches and is above a buoy, the two will incline at an angle to the ship's centerline arranged main beam 23 usually to arrange the buoy in the middle between the hulls and to lead them to the buoy chair 19. Depending on the shape of the buoy, several guide support rods approximately parallel to those with 23 are designated to ensure that the buoy is guided to the chair 19. The buoy chair 19 shown is for Capturing a spherical anchor buoy 47 having a cable connected to a subsea anchor is formed. In the As a rule, such buoys are constructed pneumatically, and they are constructed from rubber or a similar flexible material. One hanging anchor line 30 runs centrally through the buoy and ends at the top of the buoy in an eye 7 5 or a similar fastening device, at which a connection can easily be made to salvage an anchor 32. An anchor line 34

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stretches to 'the ship fixed with the anchor. It lies on hand that different designs of the buoy chair 19 in adaptation to different buoys or other shapes or types can be provided.

FIGS. 4 and 5 each show a top view and a side view of the rescue device, which are also used as a buoy catcher and can be referred to as a device for positioning the salvage device relative to the waterline of the ship. Fig. 5 shows a section along the line 5-5 of FIG.

The main beams or guide beams 23 extend from the inside The hull surfaces of the ship are at an angle and are interconnected to form a substantially U-shaped structure tied together. As shown, a rear support bar 25 connects the two main beams. Chair struts 26 arranged further below and 27 extend downwardly from the main beams and form a slot 29 for receiving a cable attached to the buoy or a line, if the buoy is in the chair. The upper retaining struts 31 are also arranged on the main beams or guide beams 23 and form a boundary or enclosure to hold the buoy in the chair when the vehicle is in motion. The centering struts 33 effect the final Direction control for the correct introduction of the buoy into the Chair. As stated above, the guide beams 23 serve as the initial control means for the buoy or other floating, objects to be recovered. The centering struts 33 arranged at a larger angle effect the final Centering the cable or line under the buoy when entering

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this lead to the chair, which is formed from the upper retaining struts 31 and the lower chair struts 26 and 27. As soon the buoy is arranged in the chair 19, it is held there firmly. A movement of water resulting from the movement of the ship relative to the buoy tends to hold the buoy firmly against the rear part of the chair 19 and the upper retaining struts 31 to press. Accordingly, the upper support struts 31 must be arranged high enough so that the water movement does not follow the buoy drifts up and out of the buoy chair once it is arranged in the chair.

It should be noted that the buoy chair does not have any limitation for lifting the buoy in the vertical direction upwards. A person skilled in the art is familiar with the fact that the design of the chair and the raising of the main girders relative to the water level can depend on the particular design of the buoy or other objects to be captured. The buoy chair should be designed so that the buoy is fixedly arranged without damaging it by the relative movement of the water, but it can be lifted easily and simply in the vertical direction from the buoy chair. As th in Figure 5, and the _s trichpunkti _he representation is shown, is a spherical buoy buoys in the chair, wherein the upper holding struts 31 prevent any rearward movement of the buoy from the buoys chair out.

It should also be emphasized that the rescue facility and the buoy chair are preferably in the manner of an open specialist

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are trained at the factory. In this way, for example, the upper retaining strut 31 is held by the carrier 28, so that the entire recovery device 'exerts minimal flow resistance on the moving ship.

The forward ends of each main beam 23 terminate in a hinge block 35 which is hinged to a slide member 37 which in turn is adapted for vertical movement in rails 39 attached to the inner surface or wall 12 of the hulls. ^ ¹¹¹ sliding member 37, a hydraulic cylinder 41 is arranged by means of a connecting rod 42. Thus, the sliding member 37 can be arranged at any desired location along the rail 39. Naturally, other devices can also be provided in order to arrange the front end of the main girders 23 at different heights with respect to the waterline of the ship. For example, a winch with a rope can be provided instead of the hydraulic cylinder 41. Furthermore, the sliding member 37 can be connected to a vertically arranged screw, whereby a vertical adjustment of the sliding member is achieved by rotating the screw in a support part using a hydraulic or electric motor or the like. Likewise, other rail designs can be used that accommodate the sliding member for vertical movement along the inner surfaces of the opposing catamaran hulls.

By actuating the hydraulic cylinder 41, the front

end of the main girders 23 can be arranged at any desired height with respect to the waterline. Thus, the main supporters can

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Not using the ship for picking up or catching floating Objects or buoys placed outside the water to reduce drag as much as possible as shown in Fig. 6A. Likewise, the front ends of the main or guide beams 23 may be dependent by the design of the buoys or by the action of the sea waves positioned at different heights in relation to the waterline so that the main beams effectively direct the buoys to the buoy chair 19.

The rear part of the recovery device is connected to a hoist 61 via a cable or rope 43, as shown in FIG. 4 on the backboard side of the deck opening 49 is shown. A similar hoist can be provided on the control board side of the opening 49 be. This opening 49 in deck 13 is located directly Above the buoy catcher buoy chair 19, in order to gain access to the buoy or the other object in the bow chair from deck 13 to ensure. The rear part of the buoy catcher can be lifted into the area of the deck with the hoist 61, whereby the front ends of the main beams 23 are pivoted in the hinge blocks 35.

Instead of the hoist 61, other hoists can also be used find, e.g. B. hydraulic cylinders or winches. The hoist 61 shown comprises a hydraulic cylinder 63 with a movable head 64. Two sets of disks 65 and 67 are arranged on the hydraulic cylinder and movable head, so as to form a hoist around which the cable 43 can be wrapped as often as desired to achieve the desired lifting effect to create. For example, the cable 43 is six times around the

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Slices 65 tfnd 67 placed, it creates a shift in the Disk 67 of 30 cm. In the direction of the arrow a rise of the buoy fäjasfer of 1.8 m. Then the cable runs Via guide disks 70 and 72 to the recovery device 15. Thus you get an uncomplicated ictit the hoist shown Means to raise the buoy catcher by a certain amount, whereby the .einefangene object in the desired Height in the opening. 49 is arranged. The hoist 61 enables as a result, an exact arrangement of the buoy chair i-n desired: - Height with respect to the waterline during of the catch. In addition, the rear can use it Part of the rescue equipment and the buoy chair then out of the water raised when no snaps are in progress.

When no pang work is being carried out, the slider 37 is hgcjb. raised in the rail 39 and the hoist 61 extended, so that the _; The rescue device is arranged entirely outside the water, see Fig. 6 A. When the sliding member is raised, the rear support rod 25 is arranged in a support 69, which supports the rear part of the rescue device. It. a safety chain 71 can be provided. During the catching of buoys, the sliding member 37 is initially arranged at such a height that the buoys are steered towards the buoy chair 19. Then the hoist 61 is adjusted so that a corresponding height adjustment of the rear part of the rescue device and the buoy chair is produced, whereby the rescue device is arranged as shown in FIG. 6B. As soon as a buoy or;.: Another floating object has been run over by the vehicle and is firmly arranged in the buoy chair,

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the hoist is operated and the rear part of the Recovery device raised so that the upper part of the buoy (reference number 47 in Fig. 1) in the area of the deck 13 of the Ship is arranged. The opening 49 in the ship deck allows approximately above the position of the buoy in the rescue device Access to the buoy from the deck.

On the rear part of the opening 49, a web 73 (Fig. 5) be provided so that an operator has good access to the top of the buoy in the raised state. Nabhdem the buoy 47 has been raised into the opening 49 to allow an operator To enable access to the buoy, the eye 75 at the top of the anchor line 30 on one hanging down from a crane 53 Cable 51 are attached. The captured object can then be lifted onto deck, or it can the anchor line 30 cooperate with the crane 53 to lift the anchor off the ground and relocate it. The crane 53 has a winch, not shown, with which the lifting operations can be carried out. In this way of working, the capture the buoys can be carried out comparatively without changing the position of the front end of the main girders 23. at a rescue operation, it is therefore only necessary that the rescue device and the buoy chair 19 are raised in the area of the opening 49, so that a member of the crew the rope of the crane 53 can be attached to the anchor line 30 of the buoy. After a buoy has been recovered, the buoy chair can be changed without any changes the front ends of the main girders are lowered again.

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When repositioning or laying anchors, the anchor line usually only runs through a central recess * t η of the opening and ends at the eye 75 in the upper area of the buoys; In these 'cases it is advisable to anchor the anchor without the buoy _; a »'peck to lift to reposition. Therefore a main sheave 77 of the crane 53 is preferably arranged in front of the buoy in the buoy chair 19, see Fig. 6 C. As soon as the eye of the anchor glue is attached to the rope and the lifting has started, the anchor line tends to move vertically from the main sheave 77 down to .fall, whereby the buoy is removed from the buoy chair 19 '. The buoy slides into the water on the anchor line 30, see Fig. 6D and the repositioning of the anchor continues to be done by lifting the anchor line through the buoy. When the new laying is completed, the anchor line is released from the crane 53 and the recovery device is raised so that the vehicle can drive over the buoy and the next fishing operation can be carried out.

It is obvious that other, equivalent institutions such as those described above can be used to position and lift the recovery equipment. For example can the rear part of the rescue device equally on de, n inner sides of the position of the buoy chair 19 opposite Hulls arranged and provided with hydraulic cylinders that the rear part of the recovery device in the desired height and can arrange the buoy chair in the area of the opening 49 in the deck 13 to gain access to the buoy to enable. The entire rescue facility can also

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be attached to the inner sides of the hulls arranged rails in the area of the middle of the rescue facility. It can then provide devices for the arrangement of the rescue device at the desired height with respect to the waterline with which the entire recovery facility can still be raised to gain access to a captured buoy or another floating object through the opening 49 in the deck 13.

As stated above, the guidance system shown comprises primarily main or guide beams 23 and centering struts 33. Depending on the shape of the buoy, it can and it may be necessary to provide additional guidance systems to ensure that the ship can carry Do not run over the buoy without catching it in the buoy chair 19. The anchor buoy 47 shown consists essentially of rubber and it can therefore be assumed that the ship is not damaged by touching the buoy in front of the rescue device. In the case of buoys made of metal, there is a risk of contact damage may occur with part of the hulls. In this case, a more extensive guidance system can be included Guide links extending to the bow may be required to prevent such damage to the ship and the buoy as a result of a collision.

Fig. 3 shows a further damage-preventing device, which is indicated in a buoy catcher of the type described. It comprises a conventional propulsion system on the aft section of each hull 11 of the catamaran ship. A propeller 55 is

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provided on a drive shaft 63. A conventional rudder 57 is provided immediately behind the propeller. With regard to the possibility that, despite appropriate precautions, a buoy from the rescue facility Device is run over, it is indicated, a propeller protection 59 and propeller protection struts 64 at least on the Inboard side, but preferably also on the outboard side, of each propeller provided aft in the hulls 11 to arrange, so that it is avoided that buoys or other objects hit the propellers.

From Fig. 2 it can also be seen that in a preferred As an example of the implementation of the invention, each hull of the catamaran ship is provided with a bow thrust device, whereby the ship is able to make rapid course corrections when approaching a buoy or a another floating object to be recorded. at In heavy seas, it may be necessary to make course corrections to avoid head-on collisions with a buoy. at Under certain circumstances, steering corrections by means of the rudders 57 cannot be carried out quickly enough, especially when the ship is moving at low speeds. In the embodiment shown, the nose thrusters 65 and 67 are in the front Partly through the hulls from the inside to the outside of the recesses, in which essentially each a powered propeller is provided.

It is obvious that the remainder of the ship, as shown, but not described in detail,

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can be of a wholesome nature. Other ship designs can also be used. For example, the wheelhouse 21 of the ship can be arranged further aft, thereby enlarging the opening between the front parts of the hulls will. The recovery device can then be arranged in this forward position between the hulls, so that from the wheelhouse can be viewed from the captured and recovered buoy. Furthermore, between the hulls in the rear Part of the ship a U-shaped recess is provided and the recovery system is arranged below this opening, Further modifications of the exemplary embodiment shown are familiar to those skilled in the art.

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Claims (15)

-30- 2S33600 claims 1. Device for recovering a floating object. ^ - ^ characterized by a catamaran vehicle having two separate hulls (11) for controlling the object floating on a water surface and a recovery device (15) provided between the hulls for retrieving and holding the object in the device while the vehicle is in motion wherein the recovery device (15) is movable in the vertical direction with respect to the waterline of the vehicle for retrieving and lifting the object above water between the hulls (15). «2. Device according to Claim 1, characterized in that the recovery device (15) is arranged on the inboard walls of the hulls (11). 3. Apparatus according to claim 2, characterized in that the recovery device is arranged in front of a holding device (19) on the inboard walls (12) of the hulls (11) and that it is used to steer the floating object into the holding device (19) '. ^; .The ship in motion has guide parts. 4. Apparatus according to claim 2, characterized in that the rescue device (15) from a first lower position in the region of the waterline of the ship for receiving the 609810/0 B88 floating object in the holding device (19) into a second position in the area of the height of a deck (13) for granting access to the holding device (19) located object from the deck (13) can be raised. 5. Apparatus according to claim 4, characterized in that the holding device (19) is arranged between the hulls (11), and that an opening (49) is provided in the deck (13) in the region of the holding device (19) located in the second position is. 6. Apparatus according to claim 1, characterized in that a nose thrust control device is provided in the front part of each fuselage (11). 7. Device according to claims 3 to 5, characterized in that the holding device (19) is centrally between the hulls (11) is arranged. 8. The device according to claim 1, characterized in that the hulls (11) are connected to one another by means of a structure enclosing the deck (13). 9. Apparatus according to claim 5 and 8, characterized in that the opening (49) is provided above the area between the hulls (11). 609810 / Ü588 10. Apparatus according to claim 4, 5 and 7, characterized in that the holding device (19 ^) is assigned to the recovery device Cl5). 11. The device according to claim 2, characterized in that the recovery device (15) is articulated in front of the holding device (19) on the inner board walls (12) that the hinge points for the displaceable mounting of the recovery device (15) are vertically displaceable relative to the waterline of the vehicle and that a hoist (61) is provided for vertical movement of the loading device (19) around the hinge points. 12. The device according to claim 3 and 11, characterized in that the guide parts are formed extending in front of the holding device (19) of the recovery device (15), that the front parts of the guide parts are arranged at the hinge points and that on the opposite hulls (11) vertically arranged guide rails (39) including a device for arranging the articulation points at predetermined heights with respect to the waterline are provided. 13. Apparatus according to claim 12, characterized in that on deck. (13) of the vehicle a lifting device is arranged for the object located in the holding device (19). 6098 10 / Ü588 253360Q 14. The device according to claim 13, characterized in that the lifting device comprises a crane and a cable, the cable being guided to the object from an area above and in front of the holding device (19). 15. Device according to claims 1 to 14, characterized in that that the recovery device (15) and the holding device (19) for the greatest possible reduction of the Flow resistance of the ship in motion consist of a lattice-like framework. 609810/0588