with the contact strip such that when the contact strip makes contact with an obstacle protruding into the access point the recovery device is activated by resistance of the obstacle and the contact strip is moved in the direction of the component by the recovery device application_number US 201414486458 A description fig1 to 4c disclose a device 1 for locking a movable component 2 especially a sliding or protective door arranged in front of a working or access point of a machine or an access to be shielded the component 2 moves in a vertical adjustment direction 5 in order to close off the working point on the machine tool on a conveyor belt or another machine from the outside during the machining process as a result of which it is not accessible and is to this extent protected it goes without saying that the component 2 can also be moved in the horizontal or a sloping plane if for example the entrance area at an access is to be closed or for entry to the access for loading and unloading of the working point it is necessary for the component 2 to be lifted opposite to the adjustment direction 5 for this purpose the component 2 is held.