Pivot bearing unit comprising a braking device

Abstract

A pivot bearing unit ( 18 ), having a pneumatic braking device ( 21 ) with a first and second bearing part ( 22, 23 ), which are embodied as rotatable relative to one another, wherein the braking device ( 21 ) is activatable by means of compressed air ( 36 ) via a compressed air supply line ( 10 ). The braking device ( 21 ) is provided with a brake hose ( 1 ), embedded in a bearing plate ( 14 ), in the first bearing part ( 22 ), and the brake hose ( 1 ) expands as a result of subjection to compressed air ( 36 ) with a motion ( 8 ) in the direction of a free end ( 16 ) and, via an axially movable switching ring ( 2 ), exerts a force ( 17 ) on at least one brake block ( 6 ) of the second bearing part ( 23 ), for transmitting a braking moment ( 15 ) between the first and second bearing parts ( 22, 23 ).

1 . A pivot bearing unit ( 18 ), having a pneumatic braking device ( 21 ) with a first and second bearing part ( 22 ,  23 ), which are embodied as rotatable relative to one another, wherein the braking device ( 21 ) is activatable by means of compressed air ( 36 ) via a compressed air supply line ( 10 ), characterized in that the braking device ( 21 ) is provided with a brake hose ( 1 ), embedded in a bearing plate ( 14 ), in the first bearing part ( 22 ), and the brake hose ( 1 ) expands as a result of subjection to compressed air ( 36 ) with a motion ( 8 ) in the direction of a free end ( 16 ) and, via an axially movable switching ring ( 2 ), exerts a force ( 17 ) on at least one brake block ( 6 ) of the second bearing part ( 23 ), for transmitting a braking moment ( 15 ) between the first and second bearing parts ( 22 ,  23 ). 
     
     
         2 . The pivot bearing unit of  claim 1 , characterized in that the brake hose ( 1 ) has a rectangular shape. 
     
     
         3 . The pivot bearing unit of  claim 1 , characterized in that the brake block ( 6 ) is provided with a brake lining ( 4 ). 
     
     
         4 . The pivot bearing unit of  claim 1 , characterized in that the first bearing part ( 22 ) has a central opening ( 37 ), and that the second bearing part ( 23 ) is designed is as a bearing pot ( 13 ). 
     
     
         5 . The pivot bearing unit of  claim 1 , characterized in that the pivot bearing unit ( 18 ) is provided for a tripod ( 19 ), in particular for a ceiling-mounted tripod ( 19 ), and a securing device ( 12 ) with a flange plate ( 20 ) is provided.