CABLE-BASED LIFTING DEVICE (Machine-translation by Google Translate, not legally binding)

Cable lifting device, designed to move loads with the use of several cables (1) coupled to an equal number of peripheral grooves (2) of a single traction sheave (3), and comprising a driving group (6) consisting of motor, brake, centrifugal brake and reducer mounted on a support shaft (7), a casing (8) capable of being fixed to the load to be lifted, and in which said support shaft (7) is housed, a structure (9) pivoting with respect to the axis (7), susceptible to pivoting with respect to the aforementioned casing (8) and which includes inside it a pinion coupled to the output of the reduction unit of the driving group (6) and geared with a wheel toothed (10) integral, and concentric in terms of rotation on the axis (5) with the traction sheave (3), and also comprising pressure rollers (11) intended to exert adequate pressure on the cables (1) when the structure (9) pivots on the aforementioned axis (7) and in which each of the cables (1) of suspension is pressed by an independent set of rollers (11), characterized in that the peripheral grooves (2) of the traction sheave (3) are defined by a plurality of independent adjacent plates (3a, 3b, 3c), with peripheral edge chamfered, in number equal to the grooves (2) plus one, equipped with lateral displacement by balance of forces through a bush (4) located on the axis of rotation (5), and because each of the independent sets of rollers (11) that press the suspension cables (1) against the peripheral grooves (2) of the traction sheave (3) are mounted on a tilting support plate (12), related through a pivot axis (13) with another second plate (14), or arm, which, at one end is related to the casing (8) by means of a second axis of rotation (15), at the same time as it has an elastic element (16) located between the aforementioned second plate (14) and the wall of the housing (8). (Machine-translation by Google Translate, not legally binding) 1. Aparato elevador por cable, destinado a mover cargas con la utilización de varios cables (1) acoplados a un número igual de gargantas (2) periféricas de una única polea de tracción (3), y que comprende un grupo motriz (6) compuesto por motor, freno, freno centrífugo y reductor montados en un eje (7) de soporte, una carcasa (8) susceptible de ser fijada a la carga a elevar, y en la que se aloja el citado eje (7) de soporte, una estructura (9) pivotante con respecto al eje (7), susceptible de pivotamiento respecto a la mencionada carcasa (8) y que incluye en su interior u