Abstract:
The invention relates to an energy management method and system for an electric motor (1), preferably a traction motor of an elevator system, wherein an energy manager (4) controls the energy flow between an electric network (3, 3'), energy storage media (2) and the electric motor (1), such that it provides energy to the motor (1) when it requires it; stores energy from the motor (1) in the storage media (2) when it operates according to a mode of operation in which it generates energy, and when said motor is stopped, or its energy consumption is below a limit, stores energy of the electric network (3, 3') in the storage media (2) until reaching a determined threshold (Eth_1).
Abstract:
The invention relates to a safety device for elevator apparatuses and an elevator apparatus comprising said safety device; comprising a crosshead (2) in solidarity with an upper area of at least two guides (12), close to an upper end of an elevator shaft (16), wherein said crosshead (2) allows supporting a safety device which, when it is an active position, allows maintaining a safety space between the upper end of the shaft (16) and a roof (14) of a car (13).
Abstract:
The invention relates to a rope for elevator apparatuses and elevator apparatus comprising said rope having low flexural rigidity and allowing its use with sheaves having a reduced diameter, achieving a deterioration level less than that of conventional ropes, for which purpose the rope comprises at least two linear resistant elements (1) parallel along the entire length of the rope, which are located close to a central axis (4) of the cross-section A t of the rope, said cross-section A t having a width a substantially equal to a thickness b, wherein the resistant elements (1) have cross-sections a t which are aligned parallel to said central axis (4).
Abstract:
The invention relates to an overspeed detection mechanism in lift apparatuses, safety device acting against overspeed and a lift apparatus, which detection mechanism can be assembled on a sheave (50, 50') or on the elevator car (3). It incorporates a wheel (13) rotating according to the speed of the car (3) and has pivoting arms (20, 21) swinging through the centrifugal force during the rotation of the wheel (13). It has magnetic means associated to the pivoting arms (20, 21) causing an attraction maintaining the position of the pivoting arms (20, 21) until the centrifugal force exceeds the attraction of the magnetic means. It incorporates a stop (30), belonging to a part (11-11') external to the wheel (13) against which the pivoting arm (20, 21) comes into contact when the centrifugal force generated on the pivoting arm (20, 21) due to the overspeed of the elevator car (3) exceeds the attractive force of the magnetic means, starting the braking of the car (3).
Abstract:
The invention relates to an emergency device for raising or lowering lifts trapped between floors. The inventive device comprises a first direct current geared motor (1) which transmits a rotational movement to the output shaft of the machine (3) used to pull the car of a lift during an emergency situation in which the lift is trapped between floors. The first geared motor (1) is connected by a cable (33) to a second direct current geared motor (8) which is located in a control cabinet (44) and which, upon rotation, serves as a generator and supplies electrical current to the first geared motor (1). Moreover, a hand control crank (43) is connected to the second geared motor (8), said crank defining the above-mentioned rotational movement. According to the invention, in order to prevent the energy flow from being reversed, the invention is equipped with a bi-directional clutch (4) or microswitches (35, 36) which brake the first geared motor (1) when, owing to a flow reversal, the control crank (43) begins to turn.
Abstract:
Pushbutton for lifts which can be used in the control panel located inside the car or beside the door of the lift on the different landings, and which is constituted by a structure of fixed elements associated with some moveable pushable elements whereby the latter are formed by a supporting piece on which the symbol is mounted corresponding to the function of the lift for which it has on its external face drill holes passing through distributed in number and position such that they allow the insertion of some spindles of tronco-conical configuration and of length slightly greater than the thickness of said supporting piece which said symbols have on the rear face thereof.
Abstract:
Electromechanical parachute activation system for elevating devices, comprising an activation plate (2), a braking element (3), a trigger (5) adapted to cooperate with an electromagnet (8) and with the activation plate (2) through a protruding element (4) thereof, a first spring (6), a cam (7) attached to one end of the trigger (5) and provided with actuation means (9), wherein the trigger (5), the first spring (6), the cam (7) and the means (9) cooperate so that when the electromagnet (8) is activated, the trigger blocks the movement of the protruding element (4) separating the plate (2) from the guide, when the electromagnet is not activated and there is no movement of the elevating device, the first spring (6) exerts a force such that the trigger (5) pivots on the protruding element (4) but does not release it and when there is a movement of the car, the cam (7) pivots on the guide so that the trigger (5) releases the protruding element (4). In this way, the system can be kept in stand-by without any consumption and it is possible to reset the system simply by powering the electromagnet again.
Abstract:
Guide for elevators with at least one face provided with cavities arranged continuously and homogeneously along its surface in a width f between 5 and 40mm, wherein the cavities have a width d, a depth h and whose centers are separated by a distance s, fulfilling the following conditions: 50 µm = d = 200 µm , 6 µm = h = 18 µm and 150 µm = s = 1400 µm . By virtue of the cavities, which act as reservoirs for the lubricant, hydrodynamic lubrication is improved and the coefficient of friction (COF) is reduced, in addition to increasing the residence time of the lubricant in the guide.