A boat lifting crane includes an upper frame, which in turn has two upper beams, and at least two pairs of carriages. Each carriage of each pair is mounted so that it can move on a respective upper beam and can translate for a respective stroke portion. The boat lifting crane further includes at least one lifting belt, which is extended between two carriages of a same pair of carriages. At least part of the stroke portion of a carriage of a pair of carriages is superimposed on at least part of the stroke portion of a carriage of another pair of carriages.
A method for steering a gantry crane having wheel assemblies includes the steps of: initiating movement of the gantry crane; and rotating the wheel assemblies wherein the front wheel assemblies rotate in a first rotational direction and the rear wheel assemblies rotate in a second rotational direction. The first rotational direction is opposite to the second rotational direction. First side wheel assemblies rotate at a first rotational speed and second side wheel assemblies rotate at a second rotational speed, such that the gantry crane moves from a linear path to an arcuate path with a turning radius decreasing to substantially zero for rotation about a central axis.
B62D 7/09 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle characterised by means varying the ratio between the steering angles of the steered wheels
B62D 7/14 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B66C 9/04 - Travelling gear incorporated in, or fitted to, trolleys or cranes to facilitate negotiation of curves
B66C 19/00 - Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
B62D 7/15 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
The present invention relates to a boat lifting crane (1), comprising: an upper frame (2), which in turn comprises two upper beams (3A,3B), at least two pairs (6, 7, 8, 9) of carriages, each carriage (6A, 6B; 7A, 7B; 8A, 8B; 9A, 9B) of each pair (6, 7, 8, 9) being mounted so that it can move on a respective upper beam (3 A, 3B) and can translate for a respective stroke portion, at least one lifting belt (16, 17, 18, 19), which is extended between two carriages (6A, 6B; 7A, 7B; 8A, 8B; 9A, 9B) of a same pair (6, 7, 8, 9) of carriages. The particularity of the invention resides in that at least part of the stroke portion of a carriage (6 A, 6B; 7 A, 7B; 8 A, 8B; 9 A, 9B) of a pair of carriages is superimposed on at least part of the stroke portion of a carriage (6A, 6B; 7A, 7B; 8A, 8B; 9A, 9B) of another pair (6, 7, 8, 9) of carriages.
There is proposed a method and a system for steering the wheel assemblies of a gantry crane (12), for the purpose of: b) beginning the steering of at least one wheel assembly in the desired direction; b) setting the angular position of a moveable pointer indicating a theoretical position of said wheel assembly which is consistent with said desired direction; c) iterating the steps that consist of: - setting an increment value of said moveable pointer in a direction consistent with respect to the steering movement of said wheel assembly; - calculating the angular difference between the angular position of the moveable pointer and the current position of the wheel assembly; - increasing the increment value of said moveable pointer if said difference shows a decrease, or decreasing the increment value of said moveable pointer if said difference shows an increase.
B66C 9/04 - Travelling gear incorporated in, or fitted to, trolleys or cranes to facilitate negotiation of curves
B66C 19/00 - Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
B62D 7/02 - Steering linkage; Stub axles or their mountings for pivoted bogies
B62D 7/14 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B62D 7/15 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
A method for steering a gantry crane (12) having wheel assemblies (30, 32, 34, 36) comprises the steps of: initiating movement of the gantry crane (12); and rotating the wheel assemblies (30, 32, 34, 36) wherein the front wheel assemblies (32, 36) rotate in a first rotational direction and the rear wheel assemblies (30, 34) rotate in a second rotational direction, the first rotational direction being opposite to the second rotational direction and wherein a first side wheel assemblies (30, 32) rotate at a first rotational speed and a second side wheel assemblies (34, 36) rotate at a second rotational speed, such that the gantry crane (12) moves from a linear path to an arcuate path with a turning radius decreasing to substantially zero for rotation about a central axis.
B66C 9/04 - Travelling gear incorporated in, or fitted to, trolleys or cranes to facilitate negotiation of curves
B62D 7/14 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B66C 19/00 - Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
B62D 7/15 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
(Based on Use in Commerce) Cranes; [ (Based on 44(e)) Construction equipment, namely, concrete construction machines, bulldozers, tractors, skid-steer loaders, loading machines, ] launching gantries [, and earth moving machines, namely, backhoes, excavators, graders, and scrapers; Elevating or lifting work platforms ] ; Lifting apparatus, namely, gantry cranes and ship lifts; Crane hooks; [ Building hoists; ] Mechanical and hydraulic lifts [ ; Elevating or lifting mobile work platforms; Lifting work platforms; Elevating work platforms; Mobile elevating work platforms; Aerial work platforms for use with cranes; Mobile aerial work platforms; derricks; shredders for industrial and compost waste; Rubbish compactors ] (Based on 44(e)) Trolleys; General purpose trolleys; Transport carriages, namely, remotely controlled land vehicles for transport [ ; Railway bogies; Fork lift trucks; Electric fork lift trucks; Platform trucks; Trucks featuring bed-mounted material handling machinery primarily for use in the construction materials delivery industry, namely, hydraulic extendable material conveyors, mechanical extendable material conveyors, and truck bed material lifting platforms; Dollies; Forks for fork lift trucks; Fork lift trucks and structural parts therefor; Vehicles for the tipping of loads, namely, dump trucks; Davits for boats ] (Based on 44(e)) Testing of cranes; Computer software design; Software development; Design of engineered building infrastructure systems; [ design of industrial plants; Design of boats; ] Engineering design; Industrial design; Engineering drawing
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
Construction equipment; Cranes [lifting and hoisting apparatus]; Crawler cranes; Mobile cranes; Gantry cranes; Fixed and mobile cranes; Gantry cranes; Gantry cranes; Loading cranes; Lattice mast cranes; Crane hooks; Crane augers; Cranes [lifting and hoisting apparatus]; Building hoists; Mechanical and hydraulic lifts; Mobile platforms [electric]; Mobile platforms [hydraulic]; Lifting platforms; Mobile platforms [lifting]; Elevating work platforms; Mobile elevating work platforms; Self-propelled hydraulic platforms; Aerial platforms for use with cranes; Mobile aerial work platforms [hydraulic]; Mobile aerial work platforms [electric]; Elevating or lifting work platforms [including mobile]; Derricks; Shredders [machines] for waste; Rubbish compactors [machines]; Unloading cranes; Dock cranes; Locomotive cranes; Floating cranes; Platform truck lifts; Building hoists; Lifting platforms; Mechanical and hydraulic lifts. Trolleys [mobile carts]; Fork lift trucks; Trolleys [vehicles]; General purpose trolleys; Industrial trucks; Transport carriages; Railway bogies; Mobile fork lifts; Electric lift trucks; Platform trucks; Mechanical handling trucks; Forks for fork lift trucks; Forklifts, and structural parts therefor; Undercarriage struts; Vehicles for the tipping loads; Davits for boats; Transport bogies; Dollies [trolleys]. Engineering drawing; Industrial design; Engineering design; Design of boats; Design of industrial plant; Design of engineered building systems; Software development; Designing of computer software; Testing of cranes.
