Elevator Drive

Abstract

Disclosed are an elevator drive, a clamping arrangement for an elevator machine, a braking mechanism for an elevator system, and a rotor fixture for an elevator machine. The inventive elevator drive is subdivided into a number of segments, to each of which a converter is assigned.

1 - 46 . (canceled) 
   
   
       47 . An elevator drive having an electric motor which is subdivided into a number of segments, with each segment having an associated converter and each segment comprising an independent m-phase system, with each coil of the stator winding being in a concentrated form. 
   
   
       48 . The elevator drive as claimed in  claim 47 , in which the electric motor has a rotor and a stator, with the stator being subdivided into a number of segments, and with each segment having an associated converter. 
   
   
       49 . The elevator drive as claimed in  claim 47 , which is in the form of a direct drive. 
   
   
       50 . The elevator drive as claimed in  claim 48 , in which the stator is subdivided into segments in the circumferential direction. 
   
   
       51 . The elevator drive as claimed in  claim 47 , in which the electric motor is in the form of a synchronous motor with permanent-magnet excitation. 
   
   
       52 . The elevator drive as claimed in  claim 47 , in which each winding in the stator is in the form of a single-tooth winding. 
   
   
       53 . The elevator drive as claimed in  claim 48 , in which the individual coils of the stator winding can be connected in parallel or in series with a winding phase. 
   
   
       54 . The elevator drive as claimed in  claim 47 , in which the individual segments are galvanically and/or magnetically isolated from one another. 
   
   
       55 . The elevator drive as claimed in  claim 48 , in which the flux produced by permanent magnets of the rotor is guided via pole shoes. 
   
   
       56 . The elevator drive as claimed in  claim 48 , in which the arrangement of the permanent magnets in the rotor together with pole shoes arranged between them form flux concentration for the magnetic flux. 
   
   
       57 . The elevator drive as claimed in  claim 47 , in which the magnetic field of the individual segments spreads out only in the area of the segment, and produces a torque in the individual segment. 
   
   
       58 . The elevator drive as claimed in  claim 47 , in which the individual segments can be connected in parallel or in series with one another as required, depending on the requirement, and can then be operated using a converter. 
   
   
       59 . An electric motor for an elevator drive as claimed in  claim 47 . 
   
   
       60 . A segment for an electric motor, which segment represents at least one winding of a stator winding, in which case a converter may be associated with this segment. 
   
   
       61 . An electric motor for an elevator drive, comprising a motor housing and a number of motor windings which are connected to at least one terminal, with ribs or webs between which the at least one terminal is arranged being arranged on the motor housing. 
   
   
       62 . The electric motor as claimed in  claim 61 , which is in the form of a synchronous motor with a rotor and a stator, with the stator windings being connected to the at least one terminal. 
   
   
       63 . The electric motor as claimed in  claim 61 , in which the ribs are arranged in the circumferential direction. 
   
   
       64 . The electric motor as claimed in  claim 61 , in which the profile of the ribs does not exceed a predetermined height above the housing surface. 
   
   
       65 . The electric motor as claimed in  claim 62 , in which a plurality of terminals are arranged between at least two ribs. 
   
   
       66 . The electric motor as claimed in  claim 61 , in which the terminals are arranged adjacent one another between the ribs, and/or one behind the other in the circumferential direction. 
   
   
       67 . The electric motor as claimed in  claim 61 , in which connections of the motor windings are likewise arranged between the ribs. 
   
   
       68 . The electric motor as claimed in  claim 61 , in which motor connecting cables lead downward away from the terminals out of the motor area. 
   
   
       69 . The electric motor as claimed in  claim 68 , in which the motor connecting cables are passed out of the motor area alongside one another. 
   
   
       70 . The electric motor as claimed in  claim 61 , in which edges, which point away from the motor housing, of at least two ribs which are located adjacent one another are connected to one another by a cover. 
   
   
       71 . The electric motor as claimed in  claim 61 , in which the ribs are used as supporting ribs in order to make the housing robust. 
   
   
       72 . A motor housing for an electric motor comprising ribs between which at least one terminal is arranged. 
   
   
       73 . A method for monitoring a brake which is operated by spring force, wherein a force which is required to load or bias at least one spring is taken into account. 
   
   
       74 . The method as claimed in  claim 73 , in which the force which is required for the at least one spring to reach a limit position is taken into account. 
   
   
       75 . The method as claimed in  claim 74 , in which the limit position is checked by means of a device which is provided. 
   
   
       76 . The method as claimed in  claim 73 , in which the at least one spring is biased electromechanically, electrically, mechanically, pneumatically or hydraulically. 
   
   
       77 . The method as claimed in  claim 73 , which is used for a hydraulically ventilated brake, with an oil-pressure/time profile being detected and/or a check carried out in a limit position to determine whether the applied force required to reach the limit position corresponds to a predetermined value. 
   
   
       78 . The method as claimed in  claim 77 , in which the hydraulic pressure in the hydraulic oil system is checked indirectly or directly via suitable devices. 
   
   
       79 . The method as claimed in  claim 73 , which is carried out in an elevator drive having an electric motor which is subdivided into a number of segments, with each segment having an associated converter and each segment comprising an independent m-phase system, with each coil of the stator winding being in a concentrated form. 
   
   
       80 . A braking device for an elevator installation, which is operated by spring force, in order to carry out a method for monitoring a brake which is operated by said spring force, wherein a force which is required to load or bias at least one spring is taken into account, said braking device comprising and a device for monitoring a force which is required to load or bias at least one spring. 
   
   
       81 . An elevator drive, comprising a braking device operated by spring force, wherein a force which is required to load or bias at least one spring is taken into account. 
   
   
       82 . An electric motor for an elevator installation, having a stator and a rotor which is mounted floating on a motor shaft with a rotor hub and is attached by means of a clamping element. 
   
   
       83 . The electric motor as claimed in  claim 82 , in which the clamping element is formed by at least one shrinking disk. 
   
   
       84 . The electric motor as claimed in  claim 83 , in which a shrinking disk is arranged at each of the two axial ends on the rotor hub. 
   
   
       85 . The electric motor as claimed in  claim 82 , in which the rotor is mounted on the shaft with the rotor hub, with the shaft being cylindrical in the area of the rotor hub. 
   
   
       86 . The electric motor as claimed in  claim 82 , in which the rotor hub has an outer area which is conical. 
   
   
       87 . An electric motor, comprising:
 a stator and a rotor which is mounted floating on a motor shaft with a rotor hub and is attached by means of a clamping element,   a motor housing and a number of motor windings which are connected to at least one terminal, with ribs or webs between which the at least one terminal is arranged being arranged on the motor housing, and   stator windings being connected to the at least one terminal in the form of a synchronous motor.   
   
   
       88 . An electric motor an for an elevator installation, comprising:
 a stator and a rotor which is mounted floating on a motor shaft with a rotor hub and is attached by means of a clamping element, and   said electric motor is subdivided into a number of segments, with each segment having an associated converter and each segment comprising an independent m-phase system, with each coil of the stator winding being in a concentrated form.   
   
   
       89 . An elevator drive, comprising:
 an electric motor having a stator and a rotor which is mounted floating on a motor shaft with a rotor hub and is attached by means of a clamping element, and   a braking device which is operated by spring force, wherein a force which is required to load or bias at least one spring is taken into account and wherein a device is provided for monitoring a force which is required to load or bias at least one spring.   
   
   
       90 . An electric motor, in particular as claimed in  claim 82 , in which a traction sheave is attached by means of a clamping element. 
   
   
       91 . A rotor for an electric motor, wherein said rotor is mounted floating on a motor shaft with a rotor hub and is attached by means of a clamping element. 
   
   
       92 . The method as claimed in  claim 73 , which is carried out using an electric motor having a motor housing and a number of motor windings which are connected to at least one terminal, with ribs or webs between which the at least one terminal is arranged being arranged on the motor housing.