EP0877703A1 - Device and process for lowering and raising a ships's boat - Google Patents
Device and process for lowering and raising a ships's boatInfo
- Publication number
- EP0877703A1 EP0877703A1 EP97904372A EP97904372A EP0877703A1 EP 0877703 A1 EP0877703 A1 EP 0877703A1 EP 97904372 A EP97904372 A EP 97904372A EP 97904372 A EP97904372 A EP 97904372A EP 0877703 A1 EP0877703 A1 EP 0877703A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dinghy
- rope
- ship
- stabilizing
- lifting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000005484 gravity Effects 0.000 claims description 17
- 230000006641 stabilisation Effects 0.000 claims description 11
- 238000011105 stabilization Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B23/00—Equipment for handling lifeboats or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
Definitions
- the invention relates to a device and to a method for launching and receiving a dinghy.
- the invention is also concerned with the formation of a deck crane.
- Deck cranes are cranes mounted on board ships that are used to load and unload ships or to move loads on ships.
- the ship is instead or additionally provided with so-called boat sputtering devices, which are designed as a rotating or swiveling jib arm with a constant cantilever arm.
- the cantilever arms should be short, for short.
- these outrigger arms which are referred to as davits, are pivoted in such a way that their cantilever arm projects outwards beyond the hull.
- the boats are then released on ropes from the deck directly from the ship's hull into the sea or are taken up again from there and brought to the deck.
- the dinghies can be suspended or hauled in using only a davit and a rope that attacks in the center of gravity of the dinghy.
- two davits can also be used for a dinghy in order to be able to hang the dinghy on two spaced-apart ropes. Since, with the known boat launching devices, the dinghies are released into the sea directly on the hull or picked up from there, it cannot be ruled out that the dinghy hits the hull. However, there is still a greater danger, particularly when the ship is traveling, due to the formation of waves on the ship's body, which lead to uncontrollable movements of the by-boat and thus can endanger the safety of the people in the by-boat.
- the present invention is intended to remedy this situation and to enable dinghies to be deployed and picked up with a low safety risk for the occupants with as little effort as possible.
- this object is achieved by means of a device on a ship for launching and receiving dinghies, with a deck crane which has an articulated boom pivotally attached to the ship deck, along which a lifting rope which can be unwound and unwound from a hoist winch for lifting and lowering of the dinghy and which has at least a first boom part and an elongated boom tip part which is pivotably attached to it and which carries a stabilization device for the dinghy which can be pressed onto or off the dinghy and has a guide device for its free end the lifting cable is arranged, through which the lifting cable exits the boom tip part.
- a device according to the invention loads can be moved on board as well as under dinghy conditions, ie during waves, dinghies can be suspended or picked up, dangers to the dinghy occupants resulting from the proximity to the hull or from the movement of the ship being considerably reduced.
- a device according to the invention has a deck crane with an articulated jib, the distance between the dinghy and the hull can be adapted to the requirements of the conventional davits and, in particular, can be increased, so that the risk of the dinghy striking the hull is virtually eliminated can be sen.
- the space requirement of the articulated boom is small in the non-operating state. Because beyond that Deck crane, just as the conventional deck cranes can be used to move loads on board the ship, reduces the overall design effort.
- the boom tip part carries a stabilizing device, which in turn has a fork-shaped device and a support and guide device by means of which the fork-shaped device can be pivoted and displaced with respect to the boom tip part.
- a stabilizing device which in turn has a fork-shaped device and a support and guide device by means of which the fork-shaped device can be pivoted and displaced with respect to the boom tip part.
- Two ropes can also be provided, a lifting rope for lifting and lowering the dinghy and a stabilizing rope with which the position of the dinghy can be stabilized, in particular when the ship is moving.
- a stabilization rope is additionally provided on a second stabilizing winch which can be wound up and unwound from it, which leads over an auxiliary boom and can be fastened in the dinghy.
- the measure serves to stabilize the dinghy in the vertical direction.
- the lifting rope can act behind its center of gravity so that it bears the main load when the dinghy is raised and lowered, and the additional stabilizing rope can be guided by a guide device in such a way that it can be fastened in the bow area of the dinghy . This allows moments of eccentricity to be recorded.
- the stabilizing rope is primarily used for safety when the dinghy moves next to the ship for launching or picking up. When deployed, the stabilization rope is released as the last rope, so that in the event of a the dinghy is towed in a self-stabilizing manner. For the same reason, when the dinghy is picked up, the stabilizing rope is first latched into the dinghy.
- the auxiliary boom has components that can be extended telescopically. With such a configuration of the auxiliary boom, these different operating requirements can be adapted as easily as possible. In addition, its length can be limited to the necessary minimum in the idle state, so that its space requirement is then kept as small as possible.
- the auxiliary boom is a side boom that is attached to the boom tip part.
- This enables a space-saving design of the device according to the invention.
- the advantage of using two ropes is therefore associated with the advantage of using only one lifting device, namely only one deck crane. It is advantageous if the hoist winch and the stabilizing winch are combined to form a double winch with the same effective diameter and common drive. As a result, not only is a drive saved, but also a desired vertical distance between the free end of the stabilizing cable and the free end of the lifting cable is easily maintained.
- the auxiliary boom is attached separately to the ship deck, the auxiliary boom being very particularly preferably arranged at a distance from the deck crane.
- the stabilizing rope is guided over a separate boom and not over a guide device arranged on the deck crane itself.
- a separate stabilizing rope boom it is possible to use the stabilizing rope to apply or take up higher loads and thus better manage a dinghy when moving water or larger dinghies.
- the forces resulting from the stabilization rope do not have to more are derived from the deck crane, but are taken up by the separate auxiliary boom, which can be optimally designed for this purpose.
- the stabilizing rope can run at a relatively small angle to the horizontal from the auxiliary boom to the dinghy, so that the horizontal tensile force component introduced into the dinghy by the stabilizing rope is relatively large and causes a significantly better stabilization of the dinghy in rough seas.
- the lifting winch and the stabilizing winch can advantageously be actuated synchronously and in a coordinated manner. With this measure, an optimal interaction of the lifting rope and the stabilizing rope and thus an even higher degree of security when launching and picking up the dinghy is ensured.
- the hoist winch and / or the stabilizing winch can be switched to the sea state sequence.
- the swell function is only activated when the dinghy touches down when it is launched into the water or when both the stabilizing rope and the hoisting rope are latched in during shooting.
- the winch tension is then reduced and the dinghy can follow the wave movements with tight ropes.
- the auxiliary boom has at its free end a guide device with which the stabilizing rope can be guided to the dinghy at an angle to the horizontal or vertical.
- a guide device With such a guide device, the load on the rope is significantly reduced due to its deflection at the free end of the auxiliary jib towards the dinghy.
- the lifespan and the operational safety of the stabilizing rope are considerably increased.
- the boom tip part is composed of a base section attached to the first boom part and one on the latter Longitudinal axis of the boom tip part parallel axis rotatable section, wherein a drive is provided for rotating this section and the stabilization device is attached to this section.
- the desired orientation of the dinghy to the ship can thus be achieved by turning the rotating section accordingly.
- the pivot section of the jib tip part can preferably be automatically pivoted relative to its base section by means of a swivel bearing with hydraulic drive so that the central longitudinal surface of a dinghy to be deployed or received is aligned parallel to that of the launching or receiving ship.
- a swivel bearing with hydraulic drive so that the central longitudinal surface of a dinghy to be deployed or received is aligned parallel to that of the launching or receiving ship.
- the guide device for the hoist rope has at least three rollers, the axes of rotation of which intersect one another and the hoist rope runs between their circumferential or running surfaces. In this way, the hoisting rope is guided with simple means in all directions perpendicular to its longitudinal extent.
- two fork-shaped devices can be provided, which are arranged at a distance from one another perpendicular to the longitudinal axis of the jib tip.
- a simple and convenient displacement and pivoting of the fork-shaped device is possible if its support and guide device has telescopic components.
- a further simplification can be achieved in that the supporting and guiding device has a scissor construction.
- the free end of the stabilizing cable runs over a roller guide which is arranged on a folding arm attached to the rotary section at its free end, the free end of the stabilizing cable being pivoted during crane operation can be brought into a horizontal and / or vertical distance from the free end of the lifting rope.
- the design of the folding arm allows the free end of the stabilizing rope in non-boat operation, i.e. when moving loads on board the ship, to bring them to the tip of the jib, which reduces safety risks for the personnel and also the space requirement.
- a gentle treatment of the hoist rope can be achieved in a simple manner if the guide device for the hoist rope has two rollers which lie opposite one another with their running surfaces transversely to the longitudinal direction of the jib tip part and between which the hoist rope runs.
- the guide device for the hoisting rope also very particularly preferably has two rollers, the longitudinal axis of which lie transversely to the axes of rotation of the rollers.
- the guide device for the lifting rope is attached to the base section of the jib tip part.
- a sensing ring is arranged, by touching a lifting of the guide device for the lifting rope can be triggered.
- the distance between the deck surface in the by-boat and the tip of the articulated boom, ie the guide device for the lifting rope could be so small that it is possible for people to hit the articulated boom.
- contact with the sensing ring can cause the guide device for the lifting rope and thus the entire jib tip part to rise or rise quickly, so that the distance between the dinghy deck and the guide device for the lifting rope increases.
- both the lifting rope that can be unwound on and off of a first winch, the hoisting winch, and the stabilizing rope that can be unwound on and off of a second winch, the stabilizing winch are guided along the articulated boom, the one forming the guide device for the stabilizing rope Auxiliary boom is attached to the boom tip part.
- a method is also proposed in which, when launching and picking up dinghies from the deck of a ship, in particular when driving and in sea conditions, the dinghy while it is being lowered or raised by a lifting device, and is guided horizontally alongside the ship for attaching or detaching the dinghy to or from the lifting device.
- dinghies with a very low safety risk for the occupants can be suspended or taken up.
- the fact that the dinghy is guided horizontally during lowering and lifting and also while detaching or attaching to the lifting device means that the horizontal movements of the dinghy are selected.
- the Beiooot can only carry out the horizontal movements that are permitted or specified by the horizontal guidance. In this way, unforeseen and in particular jerky movements of the dinghy, for example due to sudden gusts of wind or breaking waves, are largely excluded.
- the dinghy is preferably lowered or raised and guided at a predetermined distance from the outer wall of the ship. This measure eliminates the risk that occupants of the dinghy will become trapped between the ship wall and the dinghy.
- the dinghy is guided m parallel to the ship during the lifting or lowering. This measure has the effect that the dinghy does not perform any rotational movements, which further increases the safety of the dinghy occupants.
- the dinghy If the dinghy is in the water, it can be effectively guided by a pulling force acting in front of the center of gravity of its lateral surface. The dinghy then stabilizes itself due to its travel in the water.
- a dinghy can be particularly safely suspended with the measures specified in claim 18 and taken up with the measures specified in claim 19. Since the stabilizing rope is the last to be detached from the dinghy when it is released and the first to be attached to the dinghy when it is picked up, whereby the stabilization rope in front of the center of gravity of the dinghy 's lateral surface and the hoist rope in or behind the center of gravity from the lateral surface of the dinghy, the dinghy is guided during launch until it is certain that the dinghy can be controlled by its motor, and Recording is performed as early as possible, so that in the event of a failure of the boat engine or heavy seas the dinghy is not without guidance.
- FIG. 1 shows a side view of a deck crane according to the invention with an attached boat at the height of a ship's deck, the longitudinal central surface of the dinghy being in the pivoting plane of the deck crane,
- Figure 2 - a side view of the deck crane
- FIG. 1 the articulated jib projecting beyond the hull and being pivoted downwards and the dinghy being oriented perpendicular to the pivoting plane of the deck crane,
- FIG. 3 - in the upper part a device according to the invention with a dinghy attached to a deck crane at the height of a ship's deck, and in the lower part the lowered dinghy just above the water and lying in the water,
- FIGS. 1 and 2 are side views of the device of Figure 3, with the dinghy located just above the water.
- the deck crane shown in FIGS. 1 and 2 has an articulated boom 1, along which a lifting rope 2 and a stabilizing rope 3 are guided.
- the articulated boom 1 is fastened on a ship's deck 4 by means of a fastening device 5, with which the articulated boom 1 can be pivoted about an axis 6 vertical to the ship's deck 4.
- the articulated boom 1 is formed from a first elongated boom part 7 and an elongated boom tip part 8 which is pivotably attached thereto.
- the first boom part 7 is connected at one end to the fastening device 5 so as to be pivotable about an axis 9 parallel to the ship deck 4.
- Hydraulic cylinders 10 are provided for carrying out the pivoting movement about this axis 9, the pistons of which are attached to the first boom part 7 and the cylinders of which are attached to the fastening device 5.
- the boom tip part 8 is pivotally connected to the other end of the first boom part 7, the pivot axes 9, 11 between the first boom part 7 and the boom tip part 8 and between the first boom part 7 and the fastening device 5 running parallel to one another, so that the first Boom part 7 and the boom tip part 8 are pivotable in the same plane.
- the pivoting movement of the boom tip part 8 is in turn controlled by hydraulic cylinders 12, the piston rods of which are connected to the boom tip part 8 in the example shown and the cylinders of which are connected to the first boom part 7.
- the boom tip part 8 is formed from two sections 13, 14 lying one behind the other in the longitudinal direction thereof, the first of which is referred to as the base section 13 and forms the articulated connection with the first boom part 7.
- the second section 14 is connected to the first 13 via a pivot bearing 15, with which the second section 14 can be rotated relative to the base section 13 about the longitudinal axis 16 of the boom tip part 8.
- the second section is referred to below as the rotary section 14.
- a stabilizing device 17, 18 is fastened in an articulated manner to the rotating section 14, said stabilizing device and a guiding device device 17 and a fork-shaped device 18 which can be pivoted and shifted with the support and guide device 17 with respect to the rotary section 14.
- the support and guide device 17 has a telescopic tube 19, the outer, non-displaceable tubular element 20 of which is closed with its closed end on the rotary section 14 m near the pivot bearing 15 and on the inner, extendable tubular element 21 the fork-shaped device 18 is attached rigidly.
- the fork-shaped device 18 can be displaced with respect to the rotary section 14.
- one end of an articulated rod 22 is attached, the other end of which is connected to the piston of a lifting cylinder
- the cylinder of the lifting cylinder 23 is articulated in the vicinity of the pivot bearing 15 on the rotary section 14.
- the lifting cylinder 23 and the two articulated rods 22, 24 connected to it in a V-shape form a scissors construction, by means of which the spreading, i.e. the angle enclosed between the two articulated rods 22, 24 can be changed.
- the telescopic tube 19 can be pivoted about its articulated connection point on the rotary section 14, which causes the fork-shaped device 18 to be pivoted on the rotary section 14.
- the desired position of the fork-shaped device 18 can thus be set by suitable actuation of the telescopic tube 19 and the lifting cylinder 23, and this can be applied to the longitudinal edge of a dinghy 25 and printed.
- the fork-shaped device 18 has two forks 26, 27 which are arranged at a distance from one another perpendicular to the longitudinal axis of the jib tip part 8 and which are attached via a T-shaped attachment.
- Cleaning element 28 is rigidly connected to the movable tube element 21 of the telescopic tube 19.
- the rotary section 14 has a recess 29 into which the support and guide device 17 of the fork-shaped device 18 can be moved in order to be able to operate in the non-boat mode, i.e. if no dinghies are suspended or picked up, but only loads are being moved on board the ship, on the one hand to avoid creating a safety risk and on the other hand to minimize the space required by the jib tip part 8.
- the two forks 26, 27 of the fork-shaped device 18 are each arranged on one side of the rotary section 14.
- a roller head 30 is arranged, which is formed from two rollers 31, 32, which lie opposite one another with their running surfaces 16 transverse to the longitudinal axis of the boom tip part 8. Between these rollers 31, 32 the hoisting rope 2 runs through in order to exit the jib tip part 8 with its free end.
- the jib tip part can also be supported by the rollers and / or rollers on the hoist rope taut by an attached dinghy in order to operate the support and guide device for the fork-shaped device or the auxiliary boom described below is designed here as a side arm or folding arm to derive horizontal forces that arise.
- the guide device 30 for the lifting cable can also have rollers which are arranged with their longitudinal axes transverse to the axes of rotation of the rollers 31, 32.
- a feeler ring 33 is attached below the guide device 30 for the lifting rope 2, by means of which touching the boom tip part 8 rises and the guide device 30 for the lifting rope 2 is raised to increase the distance between a person Hoisting rope 2 hanging dinghy 25 and the end of the articulated boom 1.
- This increase in the distance also extends the telescopic tube 19 in order to ensure ensure that to the extent that the distance from the guide device 30 for the hoisting rope 2 to the dinghy 25 is increased, that which is increased to the fork-shaped device 18, in order to ensure that the fork-shaped device 18 lies securely on the longitudinal edge 34 of the dinghy 25 to back up.
- a side arm or folding arm 35 is also articulated to the rotating section 14 and can be pivoted about an axis 36 running transversely to the longitudinal axis 16 of the jib tip part 8.
- the pivoting movement is carried out by means of a hydraulic cylinder 37, the pistons of which are articulated on the folding arm 35 and whose hydraulic cylinder on the rotary section 14.
- the folding arm 35 can be pivoted from a first position, in which it runs almost parallel to the rotating section 14 and lies closely against it, into a second position, in which it extends at an angle of approximately 90 ° to the rotating section 14. In this position, the folding arm 35 also runs perpendicular to the pivoting plane of the support and guide device 17 for the fork-shaped device 18, i.e. it extends in the direction of the distance between the two forks 26, 27 of this device 18.
- At the free end of the folding arm 35 there is a roller lock 38 over which the stabilizing cable 3 runs.
- Lifting rope 2 and stabilizing rope 3 rest on a double winch 39 with the same effective diameter and the same drive, the double winch 39 being provided with a swell sequence function.
- the double winch 39 is attached near the end of the first boom part 7, which is connected to the fastening device 5.
- the ropes 2, 3 are guided along the first cantilever part 7 via two rollers 40, 41 attached to the first cantilever part 7 and run the cantilever tip part 8 into the longitudinal axis 16 of the second 41 of these rolls.
- the lifting rope 2 runs through the boom tip part 8 and exits from it through the guide device 30 for the lifting rope 2 at the free end, while the stabilizing rope 3 by means of a roller which is attached somewhat above the articulation point of the folding arm 35 in FIG 42 is deflected and from there to the roller lock 38 at the free End of the folding arm 35 runs and extends vertically downward from there.
- a dinghy To launch a dinghy, it is attached via the hoisting rope and the stabilizing rope in a manner known per se by means of a "quick release" hook.
- the dinghy is raised slightly from the ship's deck and swung over the water.
- the swivel bearing between the basic section and the rotating section of the boom tip part with its hydraulic drive automatically ensures that the dinghy is guided in parallel during the swinging-out process.
- the hydraulic cylinders between the first boom part and the boom tip part are switched to bypass, so that the boom tip part hangs essentially vertically by gravity.
- the fork-shaped device is moved horizontally and vertically by means of the hydraulically actuated support and guide device to such an extent that it is pressed against the dinghy with some force.
- the dinghy is thus guided.
- the articulated boom is lowered so that the dinghy is located just above the waterline.
- the double winch is celebrated and switched to sea waves as soon as the dinghy touches down in the water.
- the winch tension is then reduced.
- the dinghy can now follow the shaft movements with tight ropes, it being possible to increase the distance between the dinghy deck and the sensing ring by moving the articulated boom upwards by a certain distance.
- the dinghy When picking up the dinghy from the sea, the dinghy is first driven under the ropes, which have been loosened with lots, in order to be able to reach them. After the stabilizing rope and then the hoisting rope have been latched in and the double winch has been switched over to the sea-following mode, the ropes are automatically pulled taut.
- the folding arm is raised slightly beforehand, whereby the stabilizing rope is relatively shorter than the lifting rope, i.e. the free end of the stabilizing rope is slightly higher than the free end of the lifting rope. In this way, a possibly non-powered dinghy is towed self-stabilizing over the taut - because shorter - stabilizing rope.
- the stabilizing rope is first tightened so that the length adapted to the lifting rope is achieved to achieve a horizontal position for the dinghy. This is done by automatically lowering the folding arm.
- the swell tracking function of the double winch is switched off and the dinghy is raised by winding the ropes onto the double winch.
- the dinghy can strike under the feeler ring or it is touched by the body of a person and the articulated boom swings up above, so that the crane head or the free end of the jib tip part gets a safe distance from the dinghy. If the water is calm, the dinghy can also be raised without following the swell.
- the dinghy is then pulled up to a fixed height.
- the fork-shaped device is controlled against the body of the dinghy by means of its support and guiding device.
- the parallel position to the ship takes place automatically as soon as the articulated boom is raised in order to be able to place the boat on its storage on deck.
- the support and guiding device of the fork-shaped device is folded onto the boom tip part.
- the deck crane of the device shown in FIGS. 3 and 4 has no stabilizing rope running along the articulated boom 1. Rather, the stabilizing rope 3 is guided along a separate auxiliary jib 50 arranged at a horizontal distance from the deck crane.
- the auxiliary boom 50 is designed as a telescopic tube, a fixed tube 51 and a displaceable tube 52 being provided in the example shown.
- the fixed tube 51 is articulated with its closed end on the ship deck 4.
- a stabilizing winch 39b, on which the stabilizing cable 3 rests, is attached near its open end.
- the winch 39b for the stabilizing rope 3 and the winch 39a attached to the deck crane for the hoisting rope 2 can be actuated synchronously and coordinated with one another in order to adapt the lifting or lowering process and the simultaneous guidance of the boat 25 to the prevailing conditions.
- displaceable tube 52 has at its free end a guiding or deflecting device 53 for the stabilizing rope 3 in order to deflect it towards the dinghy 25.
- the distance between the deck crane and the jib 50 is approximately 20 m.
- the auxiliary boom 50 projects above the water approximately horizontally perpendicular to the longitudinal center surface of the ship.
- the rest position which is shown at the top right in FIG. 4, the displaceable tube 52 is moved into the fixed tube 51 and the auxiliary boom 50 is pivoted upward about the joint and locked in an approximately vertical position.
- the support and guide device 17 of the fork-shaped device 18 is arranged next to the rotary section 14 and fastened to the latter via tabs 54. It is actuated directly by a lifting cylinder 23, the piston being fastened to the non-displaceable tubular element 20 and the cylinder 23 to the rotary section 14 in the example shown.
- the non-displaceable tubular element 20 forms with the tabs 54, which is attached to the rotary section 14 above the lifting cylinder 23, a swivel joint 55 about which the support and guide device 17 can be pivoted by extending or retracting the piston of the lifting cylinder 23.
- the fork-shaped device 18 is formed by a correspondingly bent tube, which bears at two horizontally spaced points on the long edge of the dinghy 25, the portions 18a of the tube lying against the boat edge being viewed transversely to the longitudinal direction of the Dinghies 25 (Fig. 4) m of the longitudinal axis 17a of the support and guide device 17.
- a man-high fastening frame 56 is also indicated, by means of which the hoisting rope 2 is connected to the dinghy 25 in order to increase the security against tipping and against uncontrolled movements of the rope end.
- a rescue tray 57 can also be easily attached to a deck crane according to the invention.
- the dinghy In its rest position, the dinghy is stored on the deck of a ship, the bow of the dinghy pointing in the direction of travel of the ship.
- a deck crane In the direction of travel, in front of or behind the dinghy, there is a deck crane with an articulated boom, along which a hoisting rope runs for lifting and lowering the dinghy.
- a stabilizing rope can also be guided along the articulated boom.
- this stabilizing cable can also be guided over a separate auxiliary jib which is arranged at a horizontal distance from the deck crane, for example near the bow of the dinghy when the deck crane is at the stern of the dinghy, or vice versa.
- the articulated boom of the deck crane is swung over the dinghy and the lifting rope attached in or behind the center of gravity of the lateral surface of the dinghy.
- the stabilizing rope - regardless of whether it runs along the articulated boom or a separate auxiliary boom - is attached in front of the center of gravity of the lateral surface of the dinghy in its bow.
- the stabilizing device ie the fork-shaped device by means of the support and guiding device, is placed on one of the long edges of the dinghy - in the example shown on the long edge facing the middle of the ship.
- the dinghy is lifted by means of the lifting rope and the fork-shaped device is printed on the longitudinal edge via its support and guiding device, so that the dinghy hangs somewhat off-center and is in contact with the fork-shaped device with pressure.
- the dinghy is now swung by the deck crane over the edge of the ship and lowered downwards, the dinghy always maintaining its parallel orientation to the ship. Horizontal movements of the dinghy are not possible due to the horizontal guidance through the stabilization device.
- the drive of the dinghy is switched on and the fork-shaped device is removed from the dinghy and moved into its rest position on the articulated boom.
- the hoisting rope and the stabilizing rope are guided according to the swell and thereby kept taut. Because the stabilizing rope is kept taut, the dinghy is towed from the ship and thereby stabilized.
- the dinghy is now brought to the speed of the ship with its own drive, whereby the towing activity of the ship is gradually eliminated.
- the guidance of the lifting rope and the stabilizing rope following the sea state is switched off.
- both ropes are slackened and first the lifting rope and finally the stabilizing rope are released.
- the dinghy is no longer connected to the ship and can turn.
- To pick up the dinghy m drives a predetermined distance next to the ship and accelerates or decelerates so that it reaches the speed of the ship, which it then maintains.
- the stabilizing rope in the bow of the dinghy ie in front of the center of gravity of the lateral surface, is attached first of all. Only when the stabilizing rope is fastened in the dinghy, is the hoist rope attached to the dinghy, specifically at the center of gravity of its lateral surface.
- the winches of the stabilizing rope and hoisting rope are switched to the sea state sequence, so that the stabilizing rope is pulled and held taut, thereby leading the dinghy.
- the swell sequence of both winds is switched off and the dinghy is lifted out of the water.
- the fork-shaped device is printed by means of its support and guiding device on the longitudinal edge of the dinghy facing the ship's wall, so that the dinghy is somewhat off-center to the long axis of the articulated boom.
- the dinghy system is switched off and the dinghy is then lifted while maintaining the parallel orientation to the ship and set down on the ship deck.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Jib Cranes (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29601801U | 1996-02-02 | ||
DE29601801U DE29601801U1 (en) | 1996-02-02 | 1996-02-02 | Deck crane |
PCT/EP1997/000468 WO1997028042A2 (en) | 1996-02-02 | 1997-02-03 | Device and process for lowering and raising a ships's boat |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0877703A1 true EP0877703A1 (en) | 1998-11-18 |
EP0877703B1 EP0877703B1 (en) | 2001-06-13 |
Family
ID=8018906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97904372A Expired - Lifetime EP0877703B1 (en) | 1996-02-02 | 1997-02-03 | Device and process for lowering and raising a ships's boat |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0877703B1 (en) |
AT (1) | ATE202048T1 (en) |
AU (1) | AU1721297A (en) |
DE (2) | DE29601801U1 (en) |
ES (1) | ES2159840T3 (en) |
WO (1) | WO1997028042A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9457874B2 (en) | 2012-05-24 | 2016-10-04 | Subsea 7 Norway As | Handling loads in offshore environments |
CN107953975A (en) * | 2017-11-22 | 2018-04-24 | 国家海洋局第二海洋研究所 | Marine machinery Bei Zhidang mechanisms |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009014073B3 (en) * | 2009-03-20 | 2010-07-15 | Hmb Lintec Marine Gmbh | deckcrane |
CN103010407B (en) * | 2012-12-24 | 2015-05-20 | 江阴市北海救生设备有限公司 | High-speed rescue boat lowering device |
CN109334874A (en) * | 2018-10-25 | 2019-02-15 | 中国船舶科学研究中心(中国船舶重工集团公司第七0二研究所) | A kind of boat-carrying unmanned submersible lays recycling gantry crane system |
DE102020116367A1 (en) | 2020-06-22 | 2021-12-23 | Offcon GmbH | Load lifting system with load holding system |
CN113716474B (en) * | 2021-11-01 | 2022-01-18 | 新乡学院 | Hoisting equipment for river channel |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2212808A5 (en) * | 1972-12-29 | 1974-07-26 | Alsthom Cgee | |
US4365926A (en) * | 1976-12-28 | 1982-12-28 | Pettibone Corporation | Free-hanging load carrier for boom, with brake |
NO149498B (en) * | 1981-01-29 | 1984-01-23 | Ivar Kalvatn | DEVICE FOR RESOLUTION OF LIFE EQUIPMENT. |
GB2106858B (en) * | 1981-06-30 | 1985-02-20 | Schat Davits Limited | Boat launching system |
-
1996
- 1996-02-02 DE DE29601801U patent/DE29601801U1/en not_active Expired - Lifetime
-
1997
- 1997-02-03 WO PCT/EP1997/000468 patent/WO1997028042A2/en active IP Right Grant
- 1997-02-03 EP EP97904372A patent/EP0877703B1/en not_active Expired - Lifetime
- 1997-02-03 DE DE59703790T patent/DE59703790D1/en not_active Expired - Fee Related
- 1997-02-03 AU AU17212/97A patent/AU1721297A/en not_active Abandoned
- 1997-02-03 AT AT97904372T patent/ATE202048T1/en not_active IP Right Cessation
- 1997-02-03 ES ES97904372T patent/ES2159840T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9728042A2 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9457874B2 (en) | 2012-05-24 | 2016-10-04 | Subsea 7 Norway As | Handling loads in offshore environments |
CN107953975A (en) * | 2017-11-22 | 2018-04-24 | 国家海洋局第二海洋研究所 | Marine machinery Bei Zhidang mechanisms |
Also Published As
Publication number | Publication date |
---|---|
ATE202048T1 (en) | 2001-06-15 |
AU1721297A (en) | 1997-08-22 |
WO1997028042A3 (en) | 2002-10-24 |
EP0877703B1 (en) | 2001-06-13 |
DE29601801U1 (en) | 1996-04-18 |
WO1997028042A2 (en) | 1997-08-07 |
DE59703790D1 (en) | 2001-07-19 |
ES2159840T3 (en) | 2001-10-16 |
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