Apparatus for raising and lowering a load on or from a support

A device for lifting and lowering a load onto or from, respectively, a load carrier, comprising:

• an extension arm that is pivoted onto the load carrier;
• and
• attachment means provided on the extension arm for a load;
• wherein the extension arm makes contact in a lowered position with a stop connected to the load carrier, the extension arm being pivotable about an axis attached to the load carrier into a raised position, in which the extension arm can be stably fastened for positioning the raised load on the load carrier;
• wherein the extension arm is connected via a transmission to an energy accumulator for transferring energy of the energy accumulator onto the load;
• wherein the energy accumulator and the transmission are seated on a shared support and a force orientation with which the energy accumulator acts on the transmission can be changed;
• and
• wherein the force orientations of the energy accumulator lie on both sides of a dead center position of the transmission, where on one side of the dead center position the accumulator energy is absorbed by a stop on the shared support, and on another side of the dead center position the accumulator energy drives the transmission in a lifting direction.