ES192566U - A limiter of speed for elevators. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A limited speed for elevators, characterized by incorporating a main support consisting of a pair of oblong and vertical plates, in addition to squared by its lower extremity and secured by the horizontal branch of this with screws, as well as, conveniently separated from each other and on a base plate capable of fixing in turn on a resistant slab of concrete, or on the support beams of the tractor mechanism; an engine agent consisting of a v-throat pulley for two different diameters of transmission and rotating cables, between the side plates of the main support, on one of the sides of an axis whose ends rest on the same side plates and by the action of a transmission cable that is made integral with the movement of the cabin of the elevator in question by a solid point of unión and, for its part, rotates between said motor pulley and another pulley conveniently tensioned in the lower part of the guides of the elevator with support of horizontal supports flanged to said guides and tension springs between the supports themselves, leading to the motor-pulley on its front face, a thickening with alveoli and protrusions on the edge, and, attached to the opposite side, a cam hexagonal with rounded edges and nylon; a ratchet which, on an axis mounted horizontally between the upper extremities of the main support side plates, is swiveled by the alternative action of the mentioned cam through the adjustable friction of a pole on a bearing, and a rubber O-ring which has its axis of rotation at the end of an arm of the ratchet itself parallel to that of the cam pulley, as well as so that the special nail of the other arm of the ratchet, saves the above mentioned underlying projections of the motor pulley while the speed of the cab of the application elevator remains within the speed, but when the speed exceeds the pre-set limit value precisely in the downward direction, it is wedged against one of the projections until it reaches a stop and retains the rotation of the elevator. The motor pulley and the transmission cable with, two provisions, namely: that the pull that the motor pulley transmission cable retained exerts on the elevator cabin in question, promotes the wedging of the own elevator's parachute, and that of originating the opening and interruption of the contacts of the electric traction circuit with the aid of a finger of the ratchet that, through the eye of the adjacent side of the main support, has an adjustable path to the purpose; a device routed both. To permanently maintain the friction of the ratchet pole with respect to the cam of the motor pulley as to graduate the maximum limit of the descent speed of the elevator car, and consisting of a spring whose upper end is housed in a projection on purpose of the ratchet while the lower end is hooked on the underlying end of a full fork and in turn held on a pivot point of the adjacent side of the main support with the aid of a spacer interspersed between both branches of the fork itself, and carrier on its periphery bottom of various selective holes and intended to facilitate the fastening and sealing of the same in the convenient angular position so that the regulation of said spring, combined with the centrifugal force transmitted by the cam of the motor pulley to the pole of the ratchet, produces the wedging of this from the proposed limit of the elevator cabin lowering speed; and a box attached to the outer face of the side of the main support in which it covers the opening closing contacts of the electric traction circuit of the elevator and the latch of one of said touches, which can be possibly actuated by the finger "ad hoc "of the ratchet through the eyelet of the lateral itself. (Machine-translation by Google Translate, not legally binding)