FR2615161A1 - Floating machine for raising a vessel using a sliding platform - Google Patents

Abstract

Floating machine for raising a vessel of any shape, by sliding a platform over tubes passing through two floating bridges. This device allows: - raising of a craft of any shape, - intervention over the entire surface of the hull, - limitation of accident risks, - mounting without heavy handling means.

Description

FLOATING MACHINE FOR LIFTING A VESSEL
BY SLIDING PLATFORM
The lifting devices currently used for small and medium-sized ships are - either with grounding by straps, slings or bers, - or by floating dock with pumping of water or air in
a box.

 In both cases, the implementation has various drawbacks: - space on the ground necessary, - risk of accident during operation, - possible alteration of the hull surface - or complicated and long operation in the case of pumping .

The advantages of the machine presented are: - not to require installation on land, - to be very quick to set up. - to leave the hull accessible at all times, - to limit the risks of accident in case of rupture of
cable, - to be of relatively small size PURPOSE
The object of the present invention is to lift a vessel of any shape above the water using a vertically sliding platform.

- The ship is blocked on the platform by the bridge.

- The platform is integral with vertical pylons in tube, these pylons slide through two floats, the movement being ensured by a cable driven by a winch placed on each float (or by a single winch placed on a float).

As the pylons rise in relation to the floats, the latter sink into the water and the integral platform of the pylons rises.

Once the platform out of the water the ship is available for all work, and the hull is fully accessible.

Once the work is completed, the winch brake is released, the platform descends by its own weight and the boat is again in the water.

EXAMPLE OF LAYOUT OF THE FLOATING MACHINE ("Catamaran" layout)
Figures 1, 2 and 3 show an example of a possible arrangement of the present invention, which can be described as follows:
Buoyancy boxes - 2 floating sets each consisting of 3 boxes in
metal or glass-resin "composite", or any other
material resistant to seawater and sufficiently solid
mechanically.

These 3 pontoons being assembled together by elements
removable longitudinal.

Each floating set has 4 parts ensuring a
vertical sliding and (possibly) used as a rod
tion of the 3 boxes.

- Each of these parts has guides (see Figure 3),
in number from 2 to 4, which relate to a vertical tube of
large diameter.

These guides can be "diabolos" who go crazy
on their axis or pads in synthetic material "hydro
lube ".

Elm plate - Each sliding vertical tube (in even numbers) is
connected to a submerged platform, by an assembly system
removable locking (bolted gussets, for example).

4 tubes are shown in the explanatory drawings,
but another even number can be considered.

This platform, very resistant in its middle part
which is used to receive the ship out of the water, is th
mountable in elements less than 3 meters wide (for
favor road transport).

Leuage system
The platform and its tubes are connected to the 2 floating assemblies - by muffle cables.

These cables are operated by 1 or 2 hydraulic, mechanical or electric winches, remote-controlled or not.

A lifting system by 4 cylinders directly attached to the platform is also possible.

Additional system - Movable spreader bars connect the worm tubes
two by two.

- A light gangway connects the 2 floating sets.

- Mechanical or hydraulic cylinders, mounted on cha
that tube, ensure two by two the stability in progress
lifting by pressing on the booklet instead
a strap (which can also be optionally inserted
tallée).

CONTROL CABLES LAYOUT (Figure N 5) - The cable (A) is common for the 4 pylon tubes.

It starts from the doll (B) of the winch, it goes through the
4 mufflings (C, D, E, and F), wound on the drum
fixed (G), and reyient on the headstock (H) integral with the
same axis as the doll (B).

- This arrangement ensures the fallout of the platform
in the water without tilting (neither front-rear, nor straight
left) when the cable accidentally breaks, or
during a false winch maneuver - The fixed drum allows to divide the effort on the cable
by 2, without removing safety at the rup
cable size, because:
a) in normal traction the friction blocks the cable
on the fixed drum, and the traction is then divided
seated by 2
b) in the event of a break the cable is no longer plated on
the drum and escapes forward or backward
to laugh.

- A layout with 2 winches, one on each float,
remains perfectly possible, with the same security. Because
it is enough to interpose between the 2 pylon tubes, before
and rear, a fixed drum.

MOVEMENT (see Figures N - 2 and 4)
Position I - the boat enters the dock - the platform (a) is brought into contact with the keel - the jacks (b) are placed on the booklet - the spreader bars (c) are keyed on the key
vette (d).

Position II - The pylon tubes (e) slide on the floats (f)
by driving the platform up and pushing
gradually floats.

Position III --The platform (a) is in the high position. The-boat is
fully raised and ready for any intervention,
such as fairing, repair, etc ... Its hull is com
flatly accessible.

CORRESPONDENCE TO N s in FIGURE 1 1 1 - Light extension of platform in rectangular tube
with grating, plastic or
expanded metal Inox or Alu (load per m2: 200 Kg /
about.

N 2 - Steel or aluminum end pontoon No 3 - Steel or alumirium or "composite" main pontoon
It is fixed by 4 reinforcement angles
at the corners (or by another similar device)
N 4 - Main guide and slide tubes in steel or Alu
having a fixing device at the lower end
tion for the lifting platform.

N 5 - Lifting platform in removable rectangular tube
in 3 parts- (possibly 2):
* the central part
* Both ends
N- 6 - End plate pulley fixed on the platform
Lifting
N- 7 - Pulley with upper plate fixed on the main pontoon
cipaL
N 8 - Stainless steel cabre: 7 x 19 N- 9 - Hydraulic winch with corresponding driven pump
by an electric or thermal motor, fitted with 2
target dolls
N 10 - Sliding plates ensuring 2 functions:
* The sliding of the tube relative to the
pontoon
* on the other hand, the rigid connection of the 3 pons
tones.

or Alu
The plate is made of steel the "diabolos" are made of nylon
or in high hardness synthetic rubber "Shore".

 N-11 - Bracing arm.

These pivoting tube arms provide a connection between
2 starboard and port pipes, to prevent separation
or a reconciliation of the tubes.

 N912 - PassereLle Light junction starboard and port-.

No13 - Upper zone extension to allow circulation
easy tion with wooden decking.

Claims (4)

CLAIMS 1S A system for lifting ships by sliding vertical tubes through a floating box. 2S A lifting system by platform under the keel with locking of the. ship on this platform by the deck, thus releasing the entire hull. 3) - A completely autonomous ship lifting system  not requiring any shore infrastructure. 4) - A lifting system controlled by cable, or Breakage  of the target does not cause any material damage. 5) - A system of sliding of the tubes by "Diabolos" regulated  for vertical sliding and guiding  lateral without friction. 6) - A system for assembling the 2 floats, as well as  the platform and its pylon tubes in several by  ties to allow assembly without manuten means  heavy transport as well as transport to the road gauge.