Lifting device for lifting a payload within an elevator shaft in a controllable manner

An elevator system comprising:

• an elevator car displaceable within a lower region in an elevator shaft;
• and
• a lifting device arranged in the elevator shaft above the lower region for lifting a payload in a controllable manner, the lifting device comprising:
• a platform adapted to be fixed in the elevator shaft;
• a holding device adapted to be fixed to a payload;
• a lifting cable attached to the holding device;
• a pulling device secured to the platform;
• a securing cable interacting with the holding device at a first coupling point and with the platform at a second coupling point;
• a catching device;
• a counterweight attached to the securing cable;
• wherein the pulling device actively and controllably displaces the lifting cable relative to the platform;
• wherein the lifting device displaces the securing cable relative to the catching device when there is a relative movement between the holding device and the platform such that the securing cable remains tensioned between the first coupling point and the second coupling point by the counterweight;
• and
• wherein the catching device blocks a further relative movement between the securing cable and the catching device when the lifting cable fails.