Pick-up device and a method for controlling a brake acting on a height-adjustable pick-up unit of a pick-up device

A pick-up device (1) comprising:

• 1.1 a height-adjustable pick-up unit (2);
• 1.2 at least one gas pressure spring (7) which is designed to compensate for forces acting on the pick-up unit (2);
• 1.3 a brake (6) which is designed to take up a first position and a second position, wherein
• 1.3.1 the brake (6) in the first position locks the pick-up unit (2) in such a way that the pick-up unit is not height-adjustable, and
• 1.3.2 the brake (6) in the second position does not lock the pick-up unit (2), so that the pick-up unit (2) is adjustable in height;
• 1.4 a sensor (27) by means of which a measured variable can be determined which can be changed by forces acting on the pick-up unit (2) when the brake (6) takes up the first position;
• and
• 1.5 control means (13) by means of which the brake (6) can be actuated to take up the first position or the second position, the control means (13) being set up in such a way that the brake (6) can be actuated by the control means (13) as a function of the measured variable which can be determined by the sensor (27).