EP3225531A1 - Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit - Google Patents

Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit Download PDF

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Publication number
EP3225531A1
EP3225531A1 EP16162585.0A EP16162585A EP3225531A1 EP 3225531 A1 EP3225531 A1 EP 3225531A1 EP 16162585 A EP16162585 A EP 16162585A EP 3225531 A1 EP3225531 A1 EP 3225531A1
Authority
EP
European Patent Office
Prior art keywords
platform
base part
side arms
assembly
movable platform
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.)
Withdrawn
Application number
EP16162585.0A
Other languages
English (en)
French (fr)
Inventor
Theodorus Albertus WAJER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wajer Jachtbouw BV
Original Assignee
Wajer Jachtbouw BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wajer Jachtbouw BV filed Critical Wajer Jachtbouw BV
Priority to EP16162585.0A priority Critical patent/EP3225531A1/de
Publication of EP3225531A1 publication Critical patent/EP3225531A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/36—Arrangement of ship-based loading or unloading equipment for floating cargo
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B27/146—Pilot ladders or similar outboard ladders, e.g. bathing ladders; Pilot lifts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B2027/141—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts telescopically extendable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/16—Arrangement of ship-based loading or unloading equipment for cargo or passengers of lifts or hoists
    • B63B2027/165—Deployment or recovery of underwater vehicles using lifts or hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B29/00—Accommodation for crew or passengers not otherwise provided for
    • B63B29/02—Cabins or other living spaces; Construction or arrangement thereof
    • B63B2029/022—Bathing platforms

Definitions

  • the invention firstly relates to a movable platform assembly for a vessel, comprising an assembly base part intended to be mounted in the vessel, two spaced and in parallel extending side arms of which a first end is pivotable with respect to the assembly base part at a horizontally extending side arm pivot axis, at least one step pivotably connected to the side arms and defining an upper step face, and a platform pivotably connected to an opposite second end of the side arms and defining an upper platform face, wherein the at least one step and platform are pivotably connected to the side arms in such a manner that the upper step face and upper platform face maintain a substantially horizontal position in all pivotal positions of the side arms with respect to the assembly base part.
  • a movable platform assembly of such a type when mounted in a vessel (such as at the stern of a yacht), may be used in a number of ways.
  • a movable platform assembly may be used to haul/launch a tender or other type of small marine vessel (for example a jet ski) on board off/from the vessel.
  • the platform also may be used as a recreational rest area or as a means for allowing an easy access to or departure from the vessel (for example from/to the water when the platform is lowered sufficiently or from/to a quay or jetty when the platform is positioned at the level of the quay or jetty).
  • the platform and at least one step together define an enlarged area when the step and platform substantially extend at the same level (generally when the side arms extend substantially horizontally), and in other positions of the assembly (generally when the side arms are inclined) the at least one step and platform define members similar to a flight of steps.
  • the movable platform assembly is characterized in that the side arm pivot axis is adapted to be translated substantially horizontally with respect to the assembly base part for allowing the side arms to move between a retracted position substantially coinciding with the assembly base part and an extended position at least partly projecting from the assembly base part and/or wherein the platform is adapted to be translated substantially horizontally with respect to the side arms between a retracted position substantially overlapping the side arms and an extended position projecting from the side arms in a direction away from the assembly base part.
  • At least one and possibly two additional ways for changing the position (or attitude) of the movable platform assembly are provided.
  • the first one is obtained by a translation of the side arm pivot axis (and thus of the side arms and of the at least one step and platform) with respect to the assembly base part.
  • the second one is obtained by the translation of the platform with respect to the side arms.
  • a movable platform assembly may be obtained which combines a maximum extension or reach (when the side arms and/or platform are in the fully extended positions) with a compact configuration (when the side arms and/or platform are in the fully retracted positions) which allows reduced storage room.
  • the movable platform assembly comprises a first drive for causing the translation of the side arm pivot axis and a second drive for causing the translation of the platform, wherein the first and second drives are synchronised in such a manner that the side arm pivot axis and platform are translated simultaneously between the respective retracted and extended positions.
  • the platform may comprise a platform base part pivotably connected to the second ends of the side arms (again in such a manner that it maintains a substantially horizontal position in all pivotal positions of the side arms) and a platform main body which is slidable with respect to the platform base part and which is provided with the upper platform face, wherein the second drive comprises a sprocket journaled on the platform base part and engaging a toothed rack that is attached to the platform main body, which sprocket is mounted on a drive shaft which is rotated in correspondence with a translation of the side arm pivot axis.
  • the rotation of the sprocket not necessarily needs to occur precisely at the same time as the translation of the side arm pivot axis (although this would yield a more complex structure). In preferred embodiments, however, both translations will occur exactly at the same time.
  • the synchronisation between the translation of the side arm pivot axis and the rotation of the sprocket (and thus the translation of the platform main body) may be obtained in a number of ways.
  • the sprocket may be driven by a motor (for example an electric motor) which receives control signals from a control unit based upon signals of a sensor sensing the translation of the side arm pivot axis.
  • the sprocket may be driven at exactly the same time the side arm pivot axis translates, but as an alternative it may start/end to rotate at different times compared with the start/end of said translation.
  • the side arm pivot axis is located on a slide which is adapted to be translated substantially horizontally with respect to the assembly base part and which carries a reversal roller and wherein the second drive further comprises a flexible elongate drive member which has a central part that extends between the reversal roller and the drive shaft, a first end part which extends around the reversal roller and which is attached to a stationary part, and a second end part which in a force transmitting manner engages and extends around the drive shaft and which also is attached to a stationary part.
  • the reversal roller (directly carried by the slide) and drive shaft (indirectly carried by the slide through the side arms) also translate and thus move relative to the elongate drive member. This results in a rotation of the drive shaft and thus in the required rotation of the sprocket which will cause a translation of the platform main body.
  • the stationary parts to which the first and second end parts of the elongate drive member are attached may be parts of the assembly base part (although also stationary parts of the vessel are conceivable).
  • the second end part of the elongate drive member defines more than a half revolution around the drive shaft. This results in sufficient friction between said second end part and the drive shaft for transmitting sufficient force for driving the sprocket.
  • the elongate drive member at the drive shaft is divided into two separate elongate drive member parts defining there inner ends attached to the drive shaft and each defining a number of revolutions around the drive shaft.
  • Such an embodiment not only makes mounting and dismounting operations of the elongate drive member easier, but also securely avoids any slip between said drive member and the drive shaft.
  • At least one of the first and second end parts is attached to the respective stationary part of the assembly in a settable manner. This allows to cope with changing conditions.
  • the flexible elongate drive member may be a cable, preferably a steel cable.
  • the second end part of the flexible elongate drive member may engage the drive shaft through a drum mounted on said drive shaft.
  • the movable platform assembly further comprises a control unit adapted for controlling the translation of the side arm pivot axis with respect to the assembly base part and the translation of the platform with respect to the side arms in such a manner that such translations only are possible when the side arms extend substantially horizontally and substantially aligned with the assembly base part and platform.
  • Such a control unit may cooperate with sensor means (for example for sensing the position of the side arms) and may be useful in avoiding damage to the assembly.
  • the platform main body defines a substantially box-like structure having a top face defined by the upper platform face, a forward face depending from said top face and facing away from the assembly base part and two opposite side faces depending from said top face, said platform main body in the retracted position may surround a major part of the remaining structure (such as the side arms).
  • the movable platform assembly may be provided with at least one piston-cylinder assembly for causing a pivotal movement of the side arms. Also, the movable platform assembly may be provided with a toothed belt drive for causing the translation of the side arm pivot axis.
  • the invention in a second aspect relates to a vessel provided with a movable platform assembly according to the present invention.
  • FIG. 1 an embodiment of a movable platform assembly for a vessel is illustrated in a very schematic side elevational view which only intends to show the functional cooperation between constitutive parts of the assembly without intending to give constructional details. It is noted that some of the parts discussed are provided in pairs, as will be readily understood, but only one of such parts is illustrated.
  • the assembly comprises an assembly base part 1 intended to be mounted in the vessel.
  • the base part 1 also may be a part of the vessel.
  • a slide 2 is provided which is adapted to be translated substantially horizontally with respect to the assembly base part 1.
  • said slide 2 comprises slide shoes 3 cooperating with a guide channel 4 in the assembly base part 1.
  • each side of the slide 2 two pairs of side arms 8,9 are provided, of which corresponding ones extend in parallel.
  • a first end of said side arms 8,9 is pivotably connected to the slide 2 at corresponding horizontally extending side arm pivot axes 10,11.
  • steps 12 are pivotably connected to the side arms 8,9 in such a manner that these steps 12 together with the side arms 8,9 and the slide 2 define parallelogram mechanisms.
  • Each step 12 defines an upper step face 12' which for example may support a person.
  • a platform 13 comprising a platform base part 14 which is pivotably connected to an opposite second end of the side arms 8,9.
  • This platform 13 further comprises a platform main body 15 which is slidable relative to the platform base part 14, essentially in a direction in parallel to the direction in which the slide 2 is movable relative to the assembly base part 1.
  • the platform main body 15 defines an upper platform face 15' which likewise may support a person (or other things, such as a tender, jet ski or alike).
  • the steps 12 and platform 13 are pivotably connected to the side arms 8,9 in such a manner that the upper step face 12' and upper platform face 15' maintain a substantially horizontal position in all pivotal positions of the side arms 8,9 with respect to the slide 2 and thus with respect to the assembly base part 1.
  • FIG. 1 shows two of many possible pivotal positions: in full lines a position in which the side arms 8,9 substantially extend horizontally and in broken lines an upwardly pivoted position).
  • the side arm pivot axes 10,11 are adapted to be translated substantially horizontally with respect to the assembly base part 1 for allowing the side arms 8,9 to move between a retracted position (not shown) substantially coinciding with the assembly base part 2 and an extended position (illustrated in figure 1 ) at least partly projecting from the assembly base part.
  • platform main body 15 (as caused by a second drive to be explained later) is adapted to be translated substantially horizontally with respect to the platform base part 14 (thus with respect to the side arms 8,9) between a retracted position (not shown) substantially overlapping the side arms 8,9 and an extended position (illustrated in figure 1 ) projecting from the side arms in a direction away from the assembly base part 1 or slide 2.
  • the first drive 5 for causing the translation of the slide 2 with side arm pivot axes 10,11 (and thus the side arms 8,9) relative to the assembly base part 1 and the second drive for causing the translation of the platform main body 15 relative to the platform base part 14 (and thus relative to the side arms 8,9) are synchronised in such a manner that the side arm pivot axes 8,9 and platform main body 15 are translated simultaneously between the respective retracted and extended positions relative to the assembly base part 1 and platform base part 14, respectively.
  • the manner in which this synchronisation is achieved will be explained while referring to figures 2 and 3 .
  • Figure 2 shows a schematic side elevational view of parts of an embodiment of the assembly which are responsible for achieving such a synchronisation using a second drive. This figure 2 also only intends to show the functional cooperation between those parts of the assembly without intending to give necessary constructional details.
  • a sprocket 17 is journaled on the platform base part 14 through a drive shaft 18.
  • the position of said drive shaft 18 in the illustrated side elevational view coincides with the position of a pivot defining the connection between the platform base part 14 and upper side arm 8.
  • the sprocket 17 engages a toothed rack 19 that is attached to the platform main body 15.
  • the drive shaft 18 further carries a drum 22. The drum 22 and sprocket 17 cannot rotate relative to each other.
  • the slide 2 not only carries the side arm pivot axes 10, 11 but also a reversal roller 23 around which, as a further part of the second drive, a flexible elongate drive member 24 (for example a steel cable) extends.
  • This elongate drive member 24 has a central part 25 that extends substantially between the reversal roller 23 and the drum 22, a first end part 26 which extends around the reversal roller 23 and which is attached to a stationary part 28 (for example part of the assembly base part 1), and a second end part 27 which in a force transmitting manner engages and extends around the drum 22 and which also is attached to a stationary part 29 (for example too part of the assembly base part 1).
  • At least one of the first and second end parts 26,27 may be attached to the respective stationary part 28,29 in a settable manner, as indicated schematically at 36.
  • central part 25 and second end part 27 of the elongate drive member 24 are integrally interconnected (thus form a single, continuous part) and preferably define more than a half revolution (for example two and a half revolutions) around the drum 22 on the drive shaft 18 for assuring that sufficient friction is caused between the elongate drive member 24 and drum 22.
  • the elongate drive member 24 at the drum 22 is physically divided into said central part 25 and second end part 27 (which thus define two separate elongate drive member parts) which define respective inner ends 31,30 attached to the drum 22 of the drive shaft 18 and which each define a number of revolutions around the drive shaft or drum.
  • the number of revolutions must be sufficient to allow the drum 22 to rotate in an amount for achieving all possible positions of the platform main body 15 relative to the platform base part 14.
  • guide means for the flexible elongate drive member 24 for assuring that the pivotal movement of the side arms 8,9 does not influence the rotational position of the sprocket 17 and thus the translational position of the platform main body 15.
  • the drive shaft 18 coincides with the position of a pivot defining the connection between the platform base part 14 and (upper) side arm 8
  • such guide means may coincide with the position of the (upper) side arm pivot axis 10.
  • both the central part 25 and the second end part 27 of the elongate drive member 24 may cooperate with (be guided by) such a guide means.
  • the movable platform assembly further may comprise a control unit 32 adapted for controlling the translation of the side arm pivot axes 10,11 with respect to the assembly base part 1 (through the first drive 5 for the slide 2) and also the translation of the platform main body 15 with respect to the platform base part 14 (or side arms 8,9) through the second drive (in this embodiment among others the elongate drive member 24, sprocket 17 and toothed rack 19), in such a manner that such translations only are possible when the side arms 8,9 extend substantially horizontally and substantially aligned with the assembly base part 1 and platform main body 15.
  • a control unit may cooperate with one or more sensors 33.
  • the platform main body 15 may define a substantially box-like structure having a top face defined by the upper platform face 15', a forward face 34 (only schematically illustrated in broken lines) depending from said top face and facing away from the assembly base part 1 and two opposite side faces 35 (only one schematically and partly illustrated in broken lines) depending from said top face.
  • the forward face 34 and side faces 35 may at least partially surround or cover the side arms 8,9 and steps 12 (giving the assembly an attractive appearance and protecting parts of the assembly, for example against environmental influences).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
EP16162585.0A 2016-03-29 2016-03-29 Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit Withdrawn EP3225531A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16162585.0A EP3225531A1 (de) 2016-03-29 2016-03-29 Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16162585.0A EP3225531A1 (de) 2016-03-29 2016-03-29 Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit

Publications (1)

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EP3225531A1 true EP3225531A1 (de) 2017-10-04

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EP16162585.0A Withdrawn EP3225531A1 (de) 2016-03-29 2016-03-29 Bewegliche plattformanordnung für ein wasserfahrzeug und wasserfahrzeug damit

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009007140U1 (de) * 2009-05-18 2009-09-03 H + B Technics Gmbh + Co. Kg Wasserfahrzeug mit höhenverstellbarer Plattform
US20110017122A1 (en) * 2007-11-12 2011-01-27 Mueller Peter A Segmented platform
US20130047909A1 (en) * 2010-01-13 2013-02-28 Peter A. Mueller Light-weight platform having stairs
US20130047910A1 (en) * 2010-02-16 2013-02-28 Peter A. Mueller Stern segments that can be lowered for a water vehicle
US20150158559A1 (en) * 2011-07-25 2015-06-11 Peter A. Mueller Floating platform with a technical support

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110017122A1 (en) * 2007-11-12 2011-01-27 Mueller Peter A Segmented platform
DE202009007140U1 (de) * 2009-05-18 2009-09-03 H + B Technics Gmbh + Co. Kg Wasserfahrzeug mit höhenverstellbarer Plattform
US20130047909A1 (en) * 2010-01-13 2013-02-28 Peter A. Mueller Light-weight platform having stairs
US20130047910A1 (en) * 2010-02-16 2013-02-28 Peter A. Mueller Stern segments that can be lowered for a water vehicle
US20150158559A1 (en) * 2011-07-25 2015-06-11 Peter A. Mueller Floating platform with a technical support

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