A trolley of a rope crane, comprising a trolley body, a transverse load beam of the trolley, forming part of the trolley body, a hoisting mechanism which is supported to the trolley body and comprises a rope drum for at least one hoisting rope, a hoisting motor for driving the rope drum, and a gear for coupling the hoisting motor to the rope drum, whereby the gear has a primary side coupled to the hoisting motor, and a secondary side coupled to the rope drum, and whereby the rope drum is located, as seen in the vertical direction of the trolley, between the hoisting motor and load beam parallel to the load beam, whereby the hoisting mechanism is supported by a three-point support (A, B, C) to a main beam, characterized in that the first support point and second support point are located adjacent to the secondary side of the gear so that the first support point is higher on the main beam and the second support point is lower on the main beam at a distance from the first support point, and whereby the third support point is formed by a support of the rope drum end facing away from the gear to the load beam at a lateral distance from the first and second support point (A, B), whereby at the first support point, the movement of the gear in the vertical, longitudinal, and transverse directions is prevented, but rotation is allowed, at the second support point, the movement of the gear in the direction towards the load beam is prevented, but movement in the longitudinal and vertical direction of the load beam as well as rotation allowed, and at the third support point, the movement of the rope drum end facing away from the gear in the vertical direction and towards the load beam is prevented, but movement in the longitudinal direction of the load beam and rotation are allowed. a trolley body, a transverse load beam of the trolley, forming part of the trolley body, a hoisting mechanism which is supported to the trolley body and comprises a rope drum for at least one hoisting rope, a hoisting motor for driving the rope drum, and a gear for coupling the hoisting motor to the rope drum, whereby the gear has a primary side coupled to the hoisting motor, and a secondary side coupled to the rope drum, and whereby the rope drum is located, as seen in the vertical direction of the trolley, between the hoisting motor and load beam parallel to the load beam, whereby the hoisting mechanism is supported by a three-point support (A, B, C) to a main beam, characterized in that the first support point and second support point are located adjacent to the secondary side of the gear so that the first support point is higher on the main beam and the second support point is lower on the main beam at a distance from the first support point, and whereby the third support point is formed by a support of the rope drum end facing away from the gear to the load beam at a lateral distance from the first and second support point (A, B), whereby at the first support point, the movement of the gear in the vertical, longitudinal, and transverse directions is prevented, but rotation is allowed, at the second support point, the movement of the gear in the direction towards the load beam is prevented, but movement in the longitudinal and vertical direction of the load beam as well as rotation allowed, and at the third support point, the movement of the rope drum end facing away from the gear in the vertical direction and towards the load beam is prevented, but movement in the longitudinal direction of the load beam and rotation are allowed.