FR2511355A1 - Self contained boat lifting gear - has weights up to 300 tons with jib overhanging from quay over boat - Google Patents

Abstract

The self contained boat lifting gear is for handling boats of 300 tonnes weight. It has a metal frame with a forward jib, moving on four pairs of pneumatic tyred wheels to place the load on the repair stocks. Adjustable lifting bogies run along the frame top and are used with lifting tackle. The operating gear, including a generator set, and lifting and pulling winches, is housed in a cabin remote from the lifting gear. A concrete counterweight is fixed in the quay side and can be fixed to the lift.

Description

 The present invention relates to boat lifting devices making it possible to dry vessels in the creneat of 150 tons to 30th tons, at the edge of a quay, without the use of an inclined plane or other semi-submerged constructions .

 Known terrestrial devices of this kind make it possible to hoist ships of this tornage out of water, using either a semi-submerged inclined plane, or a slope advancing in the water, on which this device is supported. The need to use one of these two auxiliary civil engineering works leads to an additional expense of the same order as for the construction of the apparatus itself.

 The lifting device according to the invention makes it possible to avoid the high cost of these auxiliary works, built almost entirely in water. In addition, the absence of construction in front of the quay frees up a large area of the port, which can be operated normally.

 In addition, the device made up of a monolithic assembly provided with a front spout equipped with a winch allowing the hoisting, rests on four axles equipped with wheels filled with tires, making its movement easy on the quay to deposit the ships or take them back from their place of repair.

 The accompanying drawings include a first board representing the apparatus in plan and elevation during the hoisting, and a second board representing an example of arrangement of ships on the repair area as a function of the position of the craft.

 The first plate represents the device in the process of hoisting a 300-ton trawler, when it comes out of the water. In order to avoid tipping in this position, the machine must be anchored to a counterweight fixed in the platform.

 When the ship reaches the desired height, it can be moved to the center of the machine, which will be freed from its anchorages to allow movement of the assembly to the place of repair.

As shown on the first plate, the device essentially consists of the following elements
Rep. 1: Metal structure.

Rep. 2: Hoisting trolleys with cabals, with adjustable distance.

Rep. 3: Distribution spreaders.

Rep. 4: Mechanics cabin, comprising a hoist winch, a
target translation winch and a generator.

Rep. 5: Concrete counterweight rammed into the quay (with hooking
removable).

Rep. 6: Chock cylinder, neoassary for hoisting.

Rep. 7: Criontation mechanism of the front drive wheels and mechanics
displacement nisms.

Rep. 8: Free and non-steerable rear wheel.

 The second board represents a plan view of a repair area, located on a quay on which the is depicted on the one hand in solid lines the lifting device in the hoisting position and on the other hand in dotted lines the r :? e machine in the process of fitting or removing a ship on a repair chassis.

 These frames are arranged in the form of a fan, to obtain a minimum loss of working surface.

 The object of the invention can be used scit on a fishing port for the repair of trawlers up to 300 tonnes without any civil engineering work auxiliary or incidentally for the transport of heavy parts on a site or in a factory, for example handling parts from one building to another.

Claims (3)

1 Autonomous boat lift, allowing to hoist or lift  and to move ships or loads of 300 tonnes. This self  nomie is made possible thanks to a metallic structure, equipped  a nose piece (1) that can be moved on four pairs of tires  (7) and (8) for depositing or picking up the loads on the chassis  of repair. 2 boat or bundle lift according to claim 1, charac  in that the means of implementing the machine does not require  no semi-submerged civil engineering auxiliary works as plan  tilted or banked to hoist or lift a ship out of water or  a burden of 300 tonnes. 3 300 ton boat or bundle lift according to the resale  cation 2, characterized by a maximum width in plan of 10 meters  for the aforementioned charge.