Abstract: A crane trolley, especially a single-rail trolley with a short overall height, with a traveling mechanism frame (2) having a hoisting mechanism (1), which can travel by running wheels (3, 3a) on a rail, especially a lower flange (4a) of an essentially horizontal beam (4), wherein at least one running wheel (3a) can be driven, and a friction roller (10) interacting with the driven running wheel (3a) is arranged on the underside (4b) of the rail. In order to create a crane trolley that guarantees a reliable reduction in the slippage of the driven running wheel (3a) with a simple design, a pair of friction rollers (10) is provided, which may be positioned against the underside (4b) of the rail by adjusting the spacing from each other via a common pressing mechanism.

Abstract: The invention concerns a hoisting device with a drive unit (1) including a motor and a transmission, a drive shaft (2) which can be driven by the drive unit (1), with drive flange (3) which can be secured to it, as well as a cable drum (4) which can be connected to the drive flange (3), wherein the torque of the drive shaft (2) can be transmitted by a coupling to the cable drum (4), wherein the coupling consists of at least one coupling element (9) arranged essentially by form fitting between the drive flange (3) and the cable drum (4), being constructed from individual coupling segments (9a), which have drive cams (10) pointing radially inward and outward on both sides, which engage with corresponding recesses (11) of the two adjoining structural parts (3, 4) that can be coupled together for the torque transmission.

Abstract: A crane trolley, especially a single-rail trolley with a short overall height, with a traveling mechanism frame (2) having a hoisting mechanism (1), which can travel by running wheels (3, 3a) on a rail, especially a lower flange (4a) of an essentially horizontal beam (4), wherein at least one running wheel (3a) can be driven, and a friction roller (10) interacting with the driven running wheel (3a) is arranged on the underside (4b) of the rail. In order to create a crane trolley that guarantees a reliable reduction in the slippage of the driven running wheel (3a) with a simple design, a pair of friction rollers (10) is provided, which may be positioned against the underside (4b) of the rail by adjusting the spacing from each other via a common pressing mechanism.

Abstract: The invention concerns a hoisting device with a drive unit (1) including a motor and a transmission, a drive shaft (2) which can be driven by the drive unit (1), with drive flange (3) which can be secured to it, as well as a cable drum (4) which can be connected to the drive flange (3), wherein the torque of the drive shaft (2) can be transmitted by a coupling to the cable drum (4), wherein the coupling consists of at least one coupling element (9) arranged essentially by form fitting between the drive flange (3) and the cable drum (4), being constructed from individual coupling segments (9a), which have drive cams (10) pointing radially inward and outward on both sides, which engage with corresponding recesses (11) of the two adjoining structural parts (3, 4) that can be coupled together for the torque transmission.