A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system has a data transmitter to transmit data to a remote location, a data receiver to receive data from the remote location, and/or a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
A motor control system powered by an input power source. The system includes a reactive power reducing input power system in electrical communication with a motor and a constant frequency input power source. The reactive power reducing input power system includes an AC-DC converter and a regulator system, wherein the regulator system is in electrical communication with a DC-AC inverter that is in electrical communication with the motor. The system may include an isolation system to electrically isolate the DC-AC inverter from the motor when the DC-AC inverter is not transmitting power to the motor. The system may accept multiple alternating current voltage sources including both single phase and three phase sources.
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
E04G 3/32 - Dispositifs de levageDispositifs de sécurité
B66D 1/46 - Dispositifs de commande non automatiques électriques
B66D 1/60 - Mécanismes d'enroulement des cordes, câbles ou chaînesCabestans adaptés à des usages particuliers
A safety lockout system for releasably locking a mast guided working surface to a mast is provided. The safety lockout system may include an outer rollcase, an inner rollcase, and a lockout assembly. The lockout assembly includes a retractable dog that is movable between an engaged position and a disengaged position. The lockout assembly may include a dog release device that operates both manually and automatically to move the retractable dog from the disengaged position to the engaged position. Automatic operation of the dog release device is triggered when the working surface experiences a tilted condition. A dog emergency release device may be provided to manually move the retractable dog to the disengaged position in the event of a malfunction. The lockout assembly may include a lockout assembly locking device that allows a portion of the lockout assembly to fold up and move the retractable dog to the disengaged position.
B66F 7/00 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier
F16B 1/04 - Moyens pour bloquer des éléments de mécanismes après fonctionnement désengagés par le mouvement de l'organe de manœuvre appartenant à l'élément de mécanisme
E04G 1/20 - Échafaudages ayant une plate-forme sur des moyens pour supporter des traverses ou plates-formes à différentes positions le long de ces éléments dressés avec possibilité de supporter
A suspension platform system having a work platform suspended between a sinistral modular mast and a dextral modular mast by a hoisting system. The modular masts are composed of at least two mast units stacked vertically and attached to one another. Each mast unit has a multifunction rail including a plurality of safety engagement devices and a stabilizer guide device, and a unit interconnection device. The work platform has at least two mast stabilizers that cooperate with the stabilizer guide devices to prevent undesired swaying of the suspended work platform. The work platform has a plurality of platform mast engagers cooperating with at least one of the mast safety engagement devices to releasably lock the platform to the modular masts. The hoisting system includes multiple carriages, hoists, and mast cables. Each carriage engages the associated mast so that the carriage may be conveniently slid up and down the mast.
A suspension work platform hoist system having a variable acceleration motor control system and a tilt control system. The tilt control system includes at least one tilt sensor to sense a tilt angle of the work platform and generate a tilt signal. A tilt controller receives the tilt signal and generates a speed control signal, which is used by the variable acceleration motor control system to control the operation of the hoist motors to maintain a tilt angle setpoint as the work platform is raised and lowered. The tilt control system may include a settling mode having a settling tilt angle setpoint, wherein the settling mode prevents the work platform from being raised or lowered until the tilt angle of the work platform reaches the settling tilt angle setpoint.
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
A suspension work platform hoist system powered by an input power source for raising a work platform on a rope. The system includes a hoist having a motor that drives a traction mechanism designed to cooperate with the rope, and a reactive power reducing input power system in electrical communication with the motor and the constant frequency input power source. The reactive power reducing input power system includes an AC-DC converter and a regulator system, wherein the regulator system is in electrical communication with a DC-AC inverter that is in electrical communication with the motor. The system may include an isolation system to electrically isolate the DC-AC inverter from the motor when the DC-AC inverter is not transmitting power to the motor. The system may accept multiple alternating current voltage sources including both single phase and three phase sources.
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
A method of repairing a wind turbine blade while mounted on a tower without removing the blade from the tower is provided. The method may begin by positioning the wind turbine blade in a substantially vertical orientation. Next, a containment structure is suspended from a nacelle via a hoisting system that positions the containment structure at a damaged portion of the blade. The damaged portion is enclosed within the containment structure and the temperature of the air within the containment structure is controlled. The blade is repaired by removing a damaged portion of the blade, and installing a repair portion to the blade where the damaged portion was removed. The method may conclude by operating the hoisting system to remove the containment structure from the blade.
A safety lockout system for releasably locking a mast guided working surface to a mast is provided. The safety lockout system may include an outer rollcase, an inner rollcase, and a lockout assembly. The lockout assembly includes a retractable dog that is movable between an engaged position and a disengaged position. The lockout assembly may include a dog release device that operates both manually and automatically to move the retractable dog from the disengaged position to the engaged position. Automatic operation of the dog release device is triggered when the working surface experiences a tilted condition. A dog emergency release device may be provided to manually move the retractable dog to the disengaged position in the event of a malfunction. The lockout assembly may include a lockout assembly locking device that allows a portion of the lockout assembly to fold up and move the retractable dog to the disengaged position
A safety lockout system for releasably locking a mast guided working surface to a mast is provided. The safety lockout system may include an outer rollcase, an inner rollcase, and a lockout assembly. The lockout assembly includes a retractable dog that is movable between an engaged position and a disengaged position. The lockout assembly may include a dog release device that operates both manually and automatically to move the retractable dog from the disengaged position to the engaged position. Automatic operation of the dog release device is triggered when the working surface experiences a tilted condition. A dog emergency release device may be provided to manually move the retractable dog to the disengaged position in the event of a malfunction. The lockout assembly may include a lockout assembly locking device that allows a portion of the lockout assembly to fold up and move the retractable dog to the disengaged position.
E04G 1/20 - Échafaudages ayant une plate-forme sur des moyens pour supporter des traverses ou plates-formes à différentes positions le long de ces éléments dressés avec possibilité de supporter
E04G 3/28 - Échafaudages mobilesÉchafaudages avec plates-formes mobiles
A suspended access chair with a rescue system that may be utilized to access a wind turbine blade while mounted on a tower for purposes such as inspection, maintenance, cleaning, and repair of the blade is provided. The suspended access chair generally includes a chair frame assembly. Upper frame and lower frame assembly rollers are secured to the chair frame assembly and are configured for rolling contact along an edge of the blade. The suspended access chair further includes primary dextral and primary sinistral gripping arms. The gripping arms may be adjusted to conform to the shape of the blade and include rollers configured for rolling contact along a portion of the blade. A hoist is provided to raise and lower the chair along a suspension rope. The rescue system is used to lower the suspended access chair from an elevated position to the ground during emergency situations.
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system that may have a data transmitter to transmit data to a remote location, a data receiver to receive data from the remote location, and/or a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may also include a GPS tracking device that transmit a hoist location and may prevent operation of the motor if the hoist location is not in an authorized area of operation. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
A suspension work platform hoist system for raising and lowering a platform. A motor control system is attached to the platform and is in electrical communication with a constant frequency input power source and a hoist motor. The system may include a tilt control system allowing the platform to reach and maintain a tilt angle setpoint as the platform is raised and lowered, and/or a system to reduce the reactive power. The hoist control system may have a data transmitter to transmit data to a remote location, a data receiver to receive data from the remote location, a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist, and/or a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.
B66F 11/04 - Dispositifs de levage spécialement adaptés à des buts particuliers, non prévus ailleurs pour plates-formes ou cabines mobiles, p. ex. sur des véhicules, permettant à des ouvriers d'occuper toute position convenable pour exécuter les travaux demandés
A suspension work platform hoist system having reduced reactive power to produce a hoist system power factor of at least 0.95 when operating at a steady state full-load condition as the motor raises the work platform. The hoist system power factor takes into account all the power consuming devices of the suspension work platform hoist system as well as a suspended conductor system that connects the constant frequency input power source to the hoist, which is often in excess of several hundred feet. The hoist system power factor may be achieved by incorporating a reactive power reducing input power system into the suspension work platform hoist system. The reactive power reducing input power system decreases the magnitude of the reactive power of the motor producing a high hoist system power. The reactive power reducing input power system may include an AC-DC converter and a regulator system in electrical communication with a DC-AC inverter that is in electrical communication with the motor.
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
A method of repairing a wind turbine blade while mounted on a tower without removing the blade from the tower is provided. The method may begin by positioning the wind turbine blade in a substantially vertical orientation. Next, a blade reinforcement structure is secured to the blade to reduce stress on a portion of the blade. The blade is repaired by removing a damaged portion of the blade, and installing a repair portion to the blade where the damaged portion was removed. The method may conclude by removing the blade reinforcement structure from the blade.
A self-erecting suspension platform system having a work platform suspended between a sinistral modular mast and a dextral modular mast by a hoisting system. The modular masts are composed of at least two mast units stacked vertically and attached to one another. Each mast unit has a multifunction rail including a plurality of safety engagement devices and a stabilizer guide device, and a unit interconnection device. The work platform has at least two mast stabilizers that cooperate with the stabilizer guide devices to prevent swaying of the suspended work platform. The work platform has a plurality of platform mast engagers cooperating with at least one of the mast safety engagement devices to releasably lock the platform to the modular masts. The hoisting system includes multiple carriages, hoists, and mast cables. Each carriage engages the associated mast so that the carriage may be conveniently slid up and down the mast.
A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to the work platform and in electrical communication with the motor control system. The motor control system is attached to the work platform and is in electrical communication with a constant frequency input power source and the hoist motors. The motor control system controls the acceleration of the work platform as it is raised and lowered by controlling the hoist motors. The controlled acceleration hoist system also includes a platform control system attached to the work platform that is in electrical communication with the motor control system and the hoist motors. Acceleration control is achieved by converting the constant frequency input power to a variable frequency power supply. This may be accomplished through the use of a variable frequency drive(s).
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
A self-erecting suspension platform system having a work platform suspended between a sinistral modular mast and a dextral modular mast by a hoisting system. The modular masts are composed of at least two mast units stacked vertically and attached to one another. Each mast unit has a multifunction rail including a plurality of safety engagement devices and a stabilizer guide device, and a unit interconnection device. The work platform has at least two mast stabilizers that cooperate with the stabilizer guide devices to prevent undesired swaying of the suspended work platform. The work platform has a plurality of platform mast engagers cooperating with at least one of the mast safety engagement devices to releasably lock the platform to the modular masts. The hoisting system includes multiple carriages, hoists, and mast cables. Each carriage engages the associated mast so that the carriage may be conveniently slid up and down the mast.
The hoist control cooling system for preferentially cooling components of a variable frequency drive that is controlling a hoist motor. The cooling system includes an inverter temperature sensor, an ambient temperature sensor, a cooling system controller, an inverter cooler, and an ambient cooler. The inverter temperature sensor measures the temperature of the inverter and generates an inverter temperature signal. The ambient temperature sensor measures the temperature of the ambient air in the sealed control enclosure and generates an ambient temperature signal. The cooling system controller communicates with the inverter temperature sensor and the ambient temperature sensor by receiving the inverter temperature signal, the ambient temperature signal, and generating both an inverter cooling signal, and an ambient cooling signal. The inverter cooling signal controls the cooling of the inverter. Similarly, an ambient cooling signal switches the ambient cooler on, thereby cooling the ambient air temperature in the sealed control enclosure.
A powered controlled acceleration suspension work platform hoist system (10) for raising and lowering a work platform (100) at a predetermined acceleration. The system (10) incorporates several hoists (200, 300) attached to the work platform (100) and in electrical communication with the motor control system (600). The motor control system (600) is attached to the work platform (1 00) and is in electrical communication with a constant frequency input power source (800) and the hoist motors (210, 310). The motor control system (600) controls the acceleration of the work platform (100) as it is raised and lowered by controlling the hoist motors (210, 310). The controlled acceleration hoist system (10) also includes a platform control system (700) attached to the work platform (100) that is in electrical communication with the motor control system (600) and the hoist motors (210, 310).
E04G 3/18 - Échafaudages essentiellement supportés par le bâtiment, p. ex. réglables en hauteur supportés par des consoles ou d'autres dispositions montées dans des ouvertures des bâtiments, p. ex. des ouvertures de fenêtres
29.
Powered controlled acceleration suspension work platform hoist system
A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to the work platform and in electrical communication with the motor control system. The motor control system is attached to the work platform and is in electrical communication with a constant frequency input power source and the hoist motors. The motor control system controls the acceleration of the work platform as it is raised and lowered by controlling the hoist motors. The controlled acceleration hoist system also includes a platform control system attached to the work platform that is in electrical communication with the motor control system and the hoist motors. Acceleration control is achieved by converting the constant frequency input power to a variable frequency power supply. This may be accomplished through the use of a variable frequency drive(s).
B66B 1/28 - Systèmes de commande à régulation, c.-à-d. avec action rétroactive, permettant d'agir sur la vitesse de déplacement, l'accélération ou la décélération électriques
One embodiment relates to a self-erecting suspension platform system having a work platform suspended between modular masts by a hoisting system. The work platform has mast stabilizers cooperating with stabilizer guide devices to prevent undesired swaying. The hoisting system includes multiple carriages and mast cables, where the carriage may slide along the mast.
Winding spools for wires and cables not included in other classes; pliers for cables. Machines not included in other classes and machine tools; motors and engines (except for land vehicles); machine coupling and transmission belts (except for land vehicles); large agricultural implements, incubators, elevators [lifts] (surfaces to raise platforms and similar objects, cables of metal), cranes, lifts, lifting and hoisting equipment. Hand-operated lifting and hoisting equipment.
