Abstract: Parallel gripping devices in cleaning installations are disclosed. A disclosed gripping device includes a first parallel gripper jaw support including a first gear rack, and a second parallel gripper jaw support including a second gear rack. The disclosed gripping device also includes a coupling gear operatively coupled to the first and second gear racks, the coupling gear to couple a motion of the first and second gear racks in a linear direction, where a rotational movement direction of the coupling gear varies whether the first and the second gear racks move towards or away from one another. The disclosed gripping device also includes an actuator to cause at least one of the first or second parallel gripper jaw supports to move along the linear direction.