Abstract: The present invention relates to an apparatus for determining the actual state and/or the remaining service life of structural components, for example large-diameter rolling bearings, of a work machine, in particular a construction machine, a material-handling machine and/or a conveyor machine, comprising a sensor system for acquiring state information relating to the structural component, and an analytical device for analyzing the acquired state information and determining the actual state and/or the remaining service life on the basis of a comparison with predetermined damage characteristics, wherein an active database device is provided for storing the damage characteristics, to which database device a determination device for determining the damage characteristics from design data of the structural component, and an adjustment device for adjusting the predetermined damage characteristics on the basis of the state and/or the remaining service life information determined by the evaluation device are connect

Abstract: The present invention generally relates to the detection of the discard state of high-strength fiber ropes. The invention relates to a device for detecting the discard state of high-strength fiber ropes for various operating conditions, wherein a rope core of the fiber rope is sheathed with a rope sheath which is intended to wear more quickly than the rope core, comprising an optical detection device for detecting the rope surface and/or a load spectrum counter for detecting the load cycles to which the fiber rope is subjected, and on the other hand to a lifting gear such as a crane comprising such a device. According to the invention, there is provided a detection device for detecting the light absorption coefficient and/or the degree of reflection of the rope sheath and an adaptation device for adapting the algorithm, by means of which the discard state is determined, in dependence on the detected light absorption coefficient and/or the detected degree of reflection.

Abstract: A method and apparatus for tightening a screw connection having a motor-operated screwdriver unit, wherein the angle of rotation and the torque are determined during the tightening to be able to stop the tightening process on reaching a desired tightening tension. An increase in the torque over the angle of rotation is determined by a determination device in a first tightening region and a change in the increase in the torque over the angle of rotation is determined in a second, following tightening region, with the screwdriver unit being stopped by a control device on reaching or exceeding of a maximum permitted change in the increase and/or of a change speed that is determined with reference to the increase that occurred in the first tightening region.

Abstract: The invention relates to a cable drum for a cable winch of a cable drive, having a drum body and two guard plates which surround the drum body on the face sides and delimit a winding space therebetween, wherein at least one of the guard plates has at least one inner wall part which is adjustable axially in the direction of the drum longitudinal axis such that the distance between the guard plates is adjustable.

Abstract: The invention relates to a device for determining the actual state and/or the remaining service life of a construction, materials-handling and/or conveyor machine, having a plurality of sensors provided on the construction, materials-handling and/or conveyor machine for recording various state information, a recording unit connected to the sensors for gathering the recorded state information, a central unit able to be connected to the recording unit for evaluating the gathered state information and determining the actual state and/or the remaining service life from the gathered state information, and a display device for displaying the determined actual state and/or the determined remaining service life, wherein the sensors comprise various sensor types for recording at least two different categories of information from the group comprising component oscillations, lubricant properties, component and/or lubricant temperature and drive loading and the central unit is designed to ascertain the actual state and/o

Abstract: The present invention relates to a cable drum for a cable winch of a cable drive, having a drum shell and two flanged wheels which adjoin the drum shell at the ends, wherein the drum shell and/or the flanged wheels are produced from fiber-reinforced composite material, wherein the drum shell and/or the flanged wheels have a multi-shell structure having at least two walls made of fiber-reinforced composite material, which walls are spaced apart from each other and connected to each other by a foam core.

Abstract: The present invention generally relates to the detection of the discard state of high-strength fiber ropes. The invention relates to a device for detecting the discard state of high-strength fiber ropes for various operating conditions, wherein a rope core of the fiber rope is sheathed with a rope sheath which is intended to wear more quickly than the rope core, comprising an optical detection device for detecting the rope surface and/or a load spectrum counter for detecting the load cycles to which the fiber rope is subjected, and on the other hand to a lifting gear such as a crane comprising such a device. According to the invention, there is provided a detection device for detecting the light absorption coefficient and/or the degree of reflection of the rope sheath and an adaptation device for adapting the algorithm, by means of which the discard state is determined, in dependence on the detected light absorption coefficient and/or the detected degree of reflection.

Abstract: The present invention relates to an apparatus for recognizing the replacement state of a high-strength fiber rope for lifting gear such as cranes as well as to a lifting gear such as a crane in which such a high-strength fiber rope is installed. It is the underlying object of the present invention to provide an improved apparatus for determining the replacement state of a high-strength fiber rope and to provide improved lifting gear having such a fiber rope that avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.

Abstract: A hoist drum for a fiber rope drive for high-strength fiber ropes such as crane hoists, boom adjustment or trolley traveling gear, and the like, comprising a drum body for winding up the fiber rope, guard plates encompassing the drum body, and a rope end fastening apparatus for fastening a rope end to the hoist drum. The rope end fastening apparatus of the hoist drum comprises two strand guiding passages that are disposed next to one another and that lead to a rope deflection element at which the rope end can be turned around and back so that one respective rope strand comes to lie in the two strand guiding passages; and furthermore comprises a clamping apparatus associated with the strand guiding passages for clamping at least the rope strand that is turned back around the rope deflection element in the strand guiding passage associated with the rope strand.

Abstract: A method and apparatus for tightening a screw connection having a motor-operated screwdriver unit, wherein the angle of rotation and the torque are determined during the tightening to be able to stop the tightening process on reaching a desired tightening tension. An increase in the torque over the angle of rotation is determined by a determination device in a first tightening region and a change in the increase in the torque over the angle of rotation is determined in a second, following tightening region, with the screwdriver unit being stopped by a control device on reaching or exceeding of a maximum permitted change in the increase and/or of a change speed that is determined with reference to the increase that occurred in the first tightening region.

Abstract: An arrangement for detecting the discard state of a high-strength fiber rope when used on such hoists, with a device for determining at least one rope parameter and an evaluation unit for evaluating the rope parameter, and providing a discard signal depending upon the evaluation of the rope parameter. The determination device comprises bending stiffness determination means for determining the bending stiffness of the rope, whereby the evaluation unit provides the discard signal depending on the determined bending stiffness of the rope.

Abstract: The present invention relates generally to rope drives working with high-strength fiber ropes such as crane hoists, boom adjustment gear, trolley traveling gear, etc. The invention in this respect in particular applies to hoist drums for the rope hoist winch of such a fiber rope drive having a drum jacket body which is provided with grooving at the peripheral side and having two guard plates adjacent to the drum jacket body at the end sides. The invention further relates to a rope pulley for such a fiber rope drive having a rotatably supported pulley body whose jacket surface has at least one rope groove. In accordance with the invention, the rope grooves have a flat-pressed, round groove contour which differs from the circular and which has a larger radius of curvature in the region of the groove base than in the region of the groove flanks adjacent thereto.

Abstract: The present invention relates to a swivel for the reduction of twist of a rope, having two swivel parts which are rotatable with respect to one another in the longitudinal direction of the rope, wherein a rotary drive is provided for the forced rotation of the two parts with respect to one another. In accordance with the invention, at least one direction of rotation measurement unit is provided at the swivel for the detection of the direction of twist of the rope with respect to the swivel, wherein the rotary drive can be controlled by a control apparatus in dependence on the determined direction of twist such that the swivel part connected to the rope is rotated in the direction of the detected direction of twist.

Abstract: The present invention generally relates to lifting gears such as cranes which use ropes such as high-strength fiber ropes. The invention in particular relates to a device for determining the discard state of such rope in use on such lifting gears, comprising a detection device for detecting at least one rope utilization parameter influencing the discard state and an evaluation unit for evaluating the rope utilization parameter and for providing a discard signal in dependence on the rope utilization parameter evaluation. According to the invention the detection unit has at least one detecting means for detecting environmental influences on the rope, which can be evaluated by evaluation devices to recognize the discard state.

Abstract: The present invention relates to an apparatus for recognizing the replacement state of a high-strength fiber rope for lifting gear such as cranes as well as to a lifting gear such as a crane in which such a high-strength fiber rope is installed. It is the underlying object of the present invention to provide an improved apparatus for determining the replacement state of a high-strength fiber rope and to provide improved lifting gear having such a fiber rope that avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.

Abstract: The present invention relates generally to lifting gear such as cranes which use high-strength fiber ropes instead of steel ropes. In this respect, the invention in particular relates to an apparatus for recognizing the discard state of a high-strength fiber rope in use at such lifting gear comprising a detection device for detecting at least one rope parameter as well as comprising an evaluation unit for evaluating the rope parameter and for providing a discard signal in dependence on the rope parameter evaluation. In accordance with the invention, the detection device of the apparatus for recognizing the discard state comprises a plurality of differently configured detection means for a magnetic, mechanical, optical and/or electronic detection of a plurality of different rope parameters which can be evaluated by the evaluation unit individually and/or in combination with one another for recognizing the discard state.

Abstract: The present invention relates generally to hoists such as cranes which instead of steel wire ropes use high-strength fiber ropes. The invention relates in particular to an arrangement for detecting the discard state of a high-strength fiber rope when used on such hoists, with a means for detecting at least one rope parameter and an evaluation unit for evaluating the rope parameter, and providing a discard signal depending upon the evaluation of the rope parameters. According to the invention, the detection means comprises torsional stiffness detection means to determine the torsional stiffness of the rope, whereby the evaluation unit provides the discard signal depending on the determined torsional stiffness of the rope.

Abstract: The present invention relates generally to rope drives working with high-strength fiber ropes such as crane hoists, boom adjustment gear, trolley traveling gear, etc. The invention in this respect in particular applies to hoist drums for the rope hoist winch of such a fiber rope drive having a drum jacket body which is provided with grooving at the peripheral side and having two guard plates adjacent to the drum jacket body at the end sides. The invention further relates to a rope pulley for such a fiber rope drive having a rotatably supported pulley body whose jacket surface has at least one rope groove. In accordance with the invention, the rope grooves have a flat-pressed, round groove contour which differs from the circular and which has a larger radius of curvature in the region of the groove base than in the region of the groove flanks adjacent thereto.

Abstract: The present invention relates generally to rope drives working with high-strength fiber ropes such as crane hoists, boom adjustment gear, trolley traveling gear, etc. The invention in this respect in particular applies to hoist drums for the rope hoist winch of such a fiber rope drive having a drum jacket body which is provided with grooving at the peripheral side and having two guard plates adjacent to the drum jacket body at the end sides. The invention further relates to a rope pulley for such a fiber rope drive having a rotatably supported pulley body whose jacket surface has at least one rope groove. In accordance with the invention, the rope grooves have a flat-pressed, round groove contour which differs from the circular and which has a larger radius of curvature in the region of the groove base than in the region of the groove flanks adjacent thereto.

Abstract: The present invention relates generally to hoists such as cranes which instead of steel wire ropes use high-strength fibre ropes. The invention relates in particular to an arrangement for detecting the discard state of a high-strength fibre rope when used on such hoists, with a means for detecting at least one rope parameter and an evaluation unit for evaluating the rope parameter, and providing a discard signal depending upon the evaluation of the rope parameters. According to the invention, the detection means comprises torsional stiffness detection means to determine the torsional stiffness of the rope, whereby the evaluation unit provides the discard signal depending on the determined torsional stiffness of the rope.