Abstract: A tool assembly for a comminuting apparatus having knives secured to the periphery of a comminuting rotor is provided including an integral knife carrier adapted to be secured to the comminuting rotor of the comminuting apparatus having a supporting surface for support against a seat formed at the rotor and an abutment face with a non-threaded through bore extending therefrom. The assembly includes a knife detachably secured to the knife carrier, a screw connection between the knife and knife carrier, and a screw bolt extending through the through bores of the knife and the knife carrier, wherein a screw nut is screwed onto a portion of the screw bolt extending beyond a trough bore of the knife carrier for clamping the knife to the knife carrier.

Abstract: A comminuting rotor is driven by a rotary current electric motor via a non-positive traction drive, wherein said rotary current electric motor is energized by a controlled frequency converter for operating the comminuting rotor at a predetermined rotational speed during the normal operating phase. A degree of slip of the traction drive is determined and monitored and the rotary current electric motor is controlled for being powered off if a first slip threshold value is exceeded. If a predetermined second threshold of the traction drive slip is exceeded, which is below said first slip threshold, for continuing the operation of the comminuting device, the frequency converter is controlled in a slip operating phase for a closed or open loop control of the traction drive slip to a predetermined third slip threshold value and for reducing the torque output from the rotary current electric motor.

Abstract: The invention relates to a method for operating a comminuting device, in which method a comminuting rotor is driven by a driving unit which at least comprises a rotary current electric motor, via a non-positive traction drive, particularly a belt drive, wherein said rotary current electric motor is energized by a controlled frequency converter, for operating the comminuting rotor at a predetermined rotational speed during the normal operating phase, and wherein a degree of slip of the traction drive is determined and monitored and the rotary current electric motor is controlled for being powered off if a first slip threshold value is exceeded.

Abstract: This invention relates to a shredding device having a driving unit driving a rotor including shredding tools on its periphery which for comminuting a material such as waste material and/or industrial residues, interact with a least one counter knife assembly that is arranged in a stationary fashion with respect to the machine housing during the shredding operation. The shredding device is characterized in that the counter knife assembly includes at least two counter knife bars which run approximately parallel to each other and are arranged one above the other in the rotating direction of the rotor, the counter knife bars, for the compensation of wear at the shredding tools and/or at the counter knife assembly, being arranged for an adjustment radially to the rotor axis by a mutually different degree by means of an adjustment device. A process for operating a shredding device is also described.

Abstract: This invention relates to a shredding device having a driving unit driving a rotor including shredding tools on its periphery which for comminuting a material such as waste material and/or industrial residues, interact with a least one counter knife assembly that is arranged in a stationary fashion with respect to the machine housing during the shredding operation. The shredding device is characterized in that the counter knife assembly includes at least two counter knife bars which run approximately parallel to each other and are arranged one above the other in the rotating direction of the rotor, the counter knife bars, for the compensation of wear at the shredding tools and/or at the counter knife assembly, being arranged for an adjustment radially to the rotor axis by a mutually different degree by means of an adjustment device. A process for operating a shredding device is also described.

Abstract: A comminuting apparatus for waster and/or production residues includes a drive device having at least one high-pole three-phase synchronous motor that is operatively connected to a comminuting shaft having at least one shaft bearing arrangement. The motor is connected directly to the comminuting shaft and the comminuting shaft over its working region has comminuting tools that cooperate with a counterpart member for comminuting the material to be processed. The comminuting shaft extends axially into the three-phase synchronous motor and the at least one shaft bearing arrangement of the comminuting shaft is surrounded at least in portion-wise manner by the synchronous motor.

Abstract: A comminuting apparatus having a compact, variable-speed drive unit with a high level of efficiency and high torque levels. The comminuting apparatus comprises a drive device having an electric motor operatively connected by way of a transmission device to a comminuting shaft that has comminuting tools at its periphery. The tools cooperate with a counterpart member to comminute the material to be processed. The electric motor is in the form of a high-pole three-phase synchronous motor that is electrically connected to the output of a frequency converter controlled by a control device, and the transmission device is in the form of an epicyclic transmission device. The motor surrounds the epicyclic transmission device at least in part, and the motor and the transmission device are arranged in a common housing.

Abstract: A comminuting apparatus having a compact, variable-speed drive unit with a high level of efficiency and high torque levels. The comminuting apparatus comprises a drive device having an electric motor operatively connected by way of a transmission device to a comminuting shaft that has comminuting tools at its periphery. The tools cooperate with a counterpart member to comminute the material to be processed. The electric motor is in the form of a high-pole three-phase synchronous motor that is electrically connected to the output of a frequency converter controlled by a control device, and the transmission device is in the form of an epicyclic transmission device. The motor surrounds the epicyclic transmission device at least in part, and the motor and the transmission device are arranged in a common housing.

Abstract: In order to provide a comminuting apparatus (1) for waste and/or production residues, of a simple structure, there is proposed an apparatus including a drive device with at least one high-pole three-phase synchronous motor (100) which is operatively connected to a comminuting shaft (20) having at least one shaft bearing arrangement (25, 26; 28, 29), wherein the motor is connected directly to the comminuting shaft (20) and the comminuting shaft over its working region at its periphery has comminuting tools (21) co-operating with a counterpart means for comminuting the material to be processed. The comminuting apparatus (1) according to the invention is distinguished in that the comminuting shaft (20) extends axially into the three-phase synchronous motor (100) and the at least one shaft bearing arrangement (25, 26; 28, 29) of the comminuting shaft (20) is enclosed at least portion-wise by the synchronous motor (100) (FIG. 2).

Abstract: In a method and apparatus for comminuting waste to minimise the risk of damage to the apparatus and to provide quick flexible reaction to changing operating conditions the comminuting apparatus includes a drive unit having at least one electric motor in the form of a between 12-pole and 32-pole three-phase synchronous motor operating at a rotary speed of between 1 and 500 rpm. The motor is electrically connected to the output of a frequency converter controlled by a control device. The drive shaft of the motor is connected without interposed transmission directly to the comminuting shaft and no torque- and/or force-transmitting drive element rotates more quickly than the drive shaft of the motor.

Abstract: In a method and apparatus for comminuting waste to minimise the risk of damage to the apparatus and to provide quick flexible reaction to changing operating conditions the comminuting apparatus includes a drive unit having at least one electric motor in the form of a between 12-pole and 32-pole three-phase synchronous motor operating at a rotary speed of between 1 and 500 rpm. The motor is electrically connected to the output of a frequency converter controlled by a control device. The drive shaft of the motor is connected without interposed transmission directly to the comminuting shaft and no torque- and/or force-transmitting drive element rotates more quickly than the drive shaft of the motor.