A method for determining the tension of a drive belt, wherein the drive belt is provided for transmission of a torque generated by a drive unit to a load, for example, a door leaf of a door system includes a first process step a., the load is moved from a moving state into a rest state. In a following process step b., the motor voltage is recorded during execution of process step a. and the time-resolved motor voltage curve is prepared. In step c., the motor current is determined from the recorded motor voltage or the motor voltage curve and a time-resolved motor current curve is prepared. In a last step d., the time-resolved motor current curve is evaluated and the tension of the drive belt is determined by means of selected curve features of the motor current curve.

A door drive for arrangement on or in connection with a door system, wherein at least one leaf element of the door system is movable, including a motor unit with a housing, in which a stator is stationarily received, and wherein a rotor is arranged so as to be rotationally-movable in the housing and includes an output shaft, wherein the output shaft can be brought into operative connection in a driving manner with the leaf element. The motor unit has the basic shape of a cuboid, which is formed at least by two housing halves connected to each other.

A door drive for arrangement on or in connection with a door system, wherein at least one leaf element of the door system is movable, including a motor unit with a housing, in which a stator is stationarily received, and wherein a rotor is arranged so as to be rotationally-movable in the housing and includes an output shaft, wherein the output shaft can be brought into operative connection in a driving manner with the leaf element. The motor unit has the basic shape of a cuboid, which is formed at least by two housing halves connected to each other.

An elevator car door apparatus includes a door frame, a door motor, a motor pulley, a reduction pulley, a first driving pulley, a second driving pulley, a reduction belt, and a driving belt. The door motor, the reduction pulley, and the first driving pulley are supported on the door frame by means of a unit supporting member. The unit supporting member includes a flat plate portion that is placed on a frame vertical surface of the door frame. The reduction pulley and the first driving pulley are rotatable around a fixed shaft that is fixed so as to be perpendicular to the flat plate portion.

An elevator car door apparatus includes a door frame, a door motor, a motor pulley, a reduction pulley, a first driving pulley, a second driving pulley, a reduction belt, and a driving belt. The door motor, the reduction pulley, and the first driving pulley are supported on the door frame by means of a unit supporting member. The unit supporting member includes a flat plate portion that is placed on a frame vertical surface of the door frame. The reduction pulley and the first driving pulley are rotatable around a fixed shaft that is fixed so as to be perpendicular to the flat plate portion.

Loading, shifting, and staging objects in automated or semi-automated fashion including systems, methods, and apparatuses for the same. The embodiments hereof enable automated and/or semi-automated loading, shifting, organizing, staging, and accessing of objects in different environments, e.g., those associated with a logistics network operation. For example, one such environment is a vehicle. In one aspect, a loading mechanism is used to load objects into a storage space of the vehicle. In another aspect, a shifting mechanism is used to shift objects in a storage space of the vehicle. In another aspect, a door assembly allows for automated opening and closing of a door into a storage space of a vehicle. In addition, methods of manufacturing and using the same are provided.

A door system includes a multi-panel door and a dual-synchronization drive assembly for the door system. The dual-synchronization drive assembly has a structural configuration and functionality that combines a drive mechanism with a synchronization mechanism. The dual-synchronization drive assembly transmits a drive force in a manner that causes linear movement of door panels of the multi-panel door system between an open position and a closed position. The dual-synchronization drive assembly causes a synchronized movement of the door panels at different linear speeds/velocities to fully advance the door panels to the open position or the closed position simultaneously. The dual-synchronization drive assembly includes a dual gear unit that is configurable to allow for any motion/speed ratio necessary in order to obtain a specific performance objective of the door system.

A door system includes a multi-panel door and a dual-synchronization drive assembly for the door system. The dual-synchronization drive assembly has a structural configuration and functionality that combines a drive mechanism with a synchronization mechanism. The dual-synchronization drive assembly transmits a drive force in a manner that causes linear movement of door panels of the multi-panel door system between an open position and a closed position. The dual-synchronization drive assembly causes a synchronized movement of the door panels at different linear speeds/velocities to fully advance the door panels to the open position or the closed position simultaneously. The dual-synchronization drive assembly includes a dual gear unit that is configurable to allow for any motion/speed ratio necessary in order to obtain a specific performance objective of the door system.

A diagnosis system diagnoses the integrity of an opening/closing device capable of opening and closing by driving a motor. A driving current acquisition unit acquires a driving current of the motor. A diagnosis unit defines a current waveform from a temporal change of the driving current acquired by the driving current acquisition unit and diagnoses the integrity of the opening/closing device based on the current waveform.

A diagnosis system diagnoses the integrity of an opening/closing device capable of opening and closing by driving a motor. A driving current acquisition unit acquires a driving current of the motor. A diagnosis unit defines a current waveform from a temporal change of the driving current acquired by the driving current acquisition unit and diagnoses the integrity of the opening/closing device based on the current waveform.