Patent application number | Description | Published |
20110235226 | ARRANGEMENT AND METHOD FOR PROTECTING A POWER SUPPLY CIRCUIT COMPONENT - The invention relates to an arrangement for protecting a component in a power supply circuit. The arrangement comprises determination of an electric quantity constituting a load on the component, which electric quantity constituting a load on the component is determined repeatedly while the component is exposed to the load. The arrangement also comprises estimation of instantaneous load capacity of the component, which estimation of instantaneous load capacity is performed using a limitation criterion set for the load capacity of the component. This limitation criterion indicates the longest possible operating time of the component under a given loading condition. For the limitation criterion, a representation with respect to the electric quantity constituting a load on the component is provided, and a limitation criterion corresponding to the defined electric quantity constituting a load on the component is derived repeatedly from the said representation while the component is exposed to the load. The estimate of instantaneous load capacity of the component is thus determined on the basis of both the limitation criterion defined substantially at the estimation instant and the limitation criteria defined before this. | 09-29-2011 |
20140203227 | ELEVATOR MOTOR - An elevator motor includes a rotor with a rotor body carrying a traction sheave as well as a brake surface configured to be gripped by a motor brake. The brake surface of the rotor is provided on a separate brake element which is separated from the rotor body, and the brake element is connected to the rotor body only via spaced apart connections. This solution leads to a reduced noise propagation of the elevator rotor. | 07-24-2014 |
20150060588 | ROPE STORAGE UNIT, A METHOD FOR INSTALLING ELEVATOR AND A METHOD FOR FABRICATING ROPE STORAGE UNIT - A rope storage unit includes a rope reel, formed by a rope wound in a spiral form and a support body provided with an inner space inside which the rope reel is positioned supported by the support body. The rope is a rod having a straight form when in rest state and elastically bendable away from the straight form, the rope being under substantial bending tension in the spiral form. The support body includes one or more support members delimiting the inner space and surrounding radially the rope reel. The outer rim of the rope reel radially compresses against the one or more support members as an effect of the bending tension. A method is provided for installing an elevator rope implementing the rope storage unit, as well as to a method for fabricating the rope storage unit. | 03-05-2015 |
20150129367 | METHOD FOR CONDITION MONITORING OF ELEVATOR ROPES AND ARRANGEMENT FOR THE SAME - A method is provided for condition monitoring of a rope of an elevator including an elevator car and a rope wheel arrangement, which rope is connected to the elevator car and passes around at least one rope wheel included in the rope wheel arrangement. The method includes obtaining travel data of the elevator car, the travel data including information describing occurrence(s) of car start(s) and/or bypass(es); and determining based on the travel data a total number of car visits at a predetermined landing in the path of the elevator car, which total number is the sum of the number of starts of the elevator car away from said predetermined landing so as to travel to any other landing irrespective of the traveling direction, and the number of times the elevator car has bypassed said predetermined landing without stopping irrespective of the traveling direction; and comparing the total number or a multifold of the total number with a first predetermined limit value, wherein said multifold equals to the total number multiplied with factor n wherein n equals the number of said at least one rope wheel; and performing one or more predetermined action if said total number or the multifold of the total number meets the first predetermined limit value, said one or more action including one or more of indicating a weakened rope condition, indicating a need for maintenance or replacement of elevator rope(s), calculating an estimated moment of maintenance or replacement of elevator rope(s), sending a specific or general warning signal, sending a fault signal, sending a signal to a service center the signal indicating weakened rope condition or a need for maintenance or a need for replacement of elevator rope(s). An arrangement implements the method. | 05-14-2015 |
20150232302 | ELEVATOR - A rope clamp for clamping one or more ropes includes a first clamping member having a first clamping face for being set against one or more ropes to be clamped and a second clamping member having a second clamping face for being set against one or more ropes to be clamped. The clamping faces defining a gap (between them) for receiving one or more ropes. The clamping members are relatively movable towards each other such that the gap is narrowed. The first clamping member and/or the second clamping member includes a metallic face part forming the clamping face of the clamping member, a metallic body part on the back side of the face part, and an elastic intermediate part made of elastic material between the body part and the face part for elastically transmitting force between the body part and the face part. | 08-20-2015 |
20150329319 | ELEVATOR - The invention relates to an elevator comprising
| 11-19-2015 |
20150362450 | METHOD AND AN ARRANGEMENT IN CONDITION MONITORING OF AN ELEVATOR ROPE - The invention relates to a method in rope condition monitoring of an elevator, in which method at least the following steps are performed: elevator suspension and/or transmission ropes are reeled and packed on a rope storage unit, and thereafter electrical resistance between a first point and a second point of elevator suspension and/or transmission ropes is measured first time, and thereafter a threshold value is determined based on the measurement, and thereafter rope is delivered into an installation site, and thereafter electrical resistance between the first point and the second point of said suspension and/or transmission ropes is measured second time, and thereafter results of said second time measurement are compared with said threshold value, and if said second time measurement meets said threshold value, predetermined actions are carried out. The invention also relates to an arrangement in rope condition monitoring of an elevator. | 12-17-2015 |
20160039638 | ELEVATOR - An elevator includes a first elevator unit vertically movable in a hoistway; a second elevator unit vertically movable in a hoistway; a suspension roping including one or more belt-shaped suspension ropes interconnecting the first elevator unit and the second elevator unit; a drive wheel for moving said one or more belt-shaped suspension ropes; a plurality of cambered diverting wheels; said one or more belt-shaped suspension ropes each passing around the drive wheel and comprising consecutively a first rope section extending between the drive wheel and the first elevator unit; and a second rope section extending between the drive wheel and the second elevator unit wherein both rope sections diverge from the drive wheel towards the same lateral side thereof, the first rope section passing over a first cambered diverting wheel, in particular resting against a cambered circumferential surface area thereof, and therefrom down to the first elevator unit, and the second rope section passing over a second cambered diverting wheel, in particular resting against cambered circumferential surface area thereof, and therefrom down to the second elevator unit. | 02-11-2016 |