摘要:
A device for collecting ferrous materials, which comprises a central body (1) fixed to an electromagnetic plate (2), wherein a plurality of radial blades (3) actuated by several hydraulic cylinders (4) arranged between each radial blade (3) and the central body (1) pivots on the edge of the electromagnetic plate (2) and wherein the central body (1) is fixed to a rotary mechanism (5) capable of rotating the device about the vertical axis of the hook of lifting equipment,wherein the central body (1) comprises a plurality of pairs of radial flanges (1.1) between which are arranged the hydraulic cylinders (4), wherein upper ends (1.11) of the pairs of radial flanges (1.1) are fixed to an upper cylindrical ring (1.2) for coupling to the rotary mechanism (5), and lower ends (1.12) of the pairs of radial flanges (1.1) are fixed to the upper face of the electromagnetic plate (2), the rotary mechanism (5) being arranged in the interior of the central body (1).
摘要:
A system (7, 8, 21) for detecting the closure status of a two-shell grab bucket (2), equipped with a first (3) and a second (4) shell rotatably hinged to each other so as to be reciprocally moved between a completely open angular position and a completely closed angular position is described. The detecting system (7, 8, 21) comprises: - a magnetic field sensor (14), adapted to detect the presence of a magnetic field and to provide in output a signal bearing information on said magnetic field; - a first container (7) attached, or adapted to be attached, to the first shell (3) to be integral therewith in movement and comprising a first housing seat (12) which houses the magnetic field sensor (14); - a magnetic field generator (15); - a second container (8) attached, or adapted to be attached, to the second shell (4) to be integral therewith in movement and comprising a housing seat (13) in which the magnetic field generator (15) is housed; - a detection circuit (16) operatively connected to the magnetic field sensor (14) to receive said signal and discriminate whether said shells (3, 4) are in the completely closed angular position or not.
摘要:
The invention relates to a rotary device for an attachment on a machine, comprising a rotator (14) which has a stator (20), preferably held non-rotatably in a housing (12), and a rotor (24) which can be rotated about the stator (20) preferably by means of a worm gear unit (24, 30), and comprising a rotary transmission leadthrough (16) which passes through the rotator (14) and is intended for conducting a pressure medium via at least one media passage (40). According to the invention, it is proposed that the at least one media passage (40) has a first passage section (42) which is directed through the stator (20) and a second passage section (44) which communicates with said first passage section (42) and is continued via the rotary transmission leadthrough (16).
摘要:
Collection unit (100), of bucket scoop type, used in a cell for producing aluminium, comprising: a) a means of attachment to a mobile support (5'); b) a connection (52, 52') activated by a first actuator (50) that moves relative to said mobile support in a vertical direction; c) a frame (110) firmly attached to said connection; d) at least one articulated bucket (120a, 120b) that pivots about an axis (115a, 115b) mounted on said frame, that has a blade (128a, 128b) and that pivots about said substantially horizontal axis. Said first actuator (50) is connected to a programmable control system capable of determining the altitude of said axis and the difference in altitude between said blade and said axis, defining the vertical displacement to be imposed upon said collection unit, defining and transmitting to said first actuator the appropriate control flow in order to impose said vertical displacement. The control flow may be a control current transmitted by a speed controller to an electric motor or a flow of oil feeding the chamber of a hydraulic cylinder, controlled by a servo valve.
摘要:
Verfahren zur Beeinflussung des Greiferfüllvolumens bei Hebezeugen mit Zweimotorengreiferhubwerken (Schließwerk und Haltewerk), eine entsprechende Anlage zur Datenverarbeitung (5) zur Durchführung des Verfahrens sowie ein entsprechendes Computerprogramm oder ein Speichermedium, auf dem ein solches Programm gespeichert ist. Bei einem Schließvorgang des Greifers für einen Kranbetrieb mit vermindertem Füllvolumen des Greifers wird eine einstellbare Grenze des für das Halten des Greifers benötigten Momentes gesetzt, die höher ist als das Moment, das allein für das Straffhalten der Halteseile nötig wäre.