Support for the Suspension of a Roller Broom on a Sweeping Vehicle

Abstract

A support system ( 1 ) for the suspension of a roller broom ( 2 ) on a sweeping vehicle comprises a rotary support ( 3 ) mounted to turn on the sweeping vehicle around a vertical slewing axis ( 7 ), a support part ( 5 ) suspended on the rotary support via a lifting mechanism ( 4 ) comprising a lifting drive ( 26 ), and a broom frame ( 6 ) mounted on the support part to rock around a horizontal axis ( 16 ) extending perpendicular to the axis of rotation (L) of the roller broom. For this purpose there is provided, in the region of the pendulum bearing ( 14 ) of the broom frame, a movably mounted locking member ( 17 ), which can occupy a first position that enables the rocking movement of the broom frame and a second position that disables the rocking movement of the broom frame in its leveled condition, and on which the lifting drive of the lifting mechanism acts in such a way that the locking member occupies its second position when the lifting drive is activated.

1 . A support system ( 1 ) for the suspension of a roller broom ( 2 ) on a sweeping vehicle, comprising a rotary support ( 3 ) mounted to turn on the sweeping vehicle around a vertical slewing axis ( 7 ), a support part ( 5 ) suspended on the rotary support via a lifting mechanism ( 4 ) comprising a lifting drive ( 26 ), and a broom frame ( 6 ) mounted on the support part to rock around a horizontal axis ( 16 ) extending perpendicular to the axis of rotation (L) of the roller broom,
 characterized in that   there is provided, in the region of the pendulum bearing ( 14 ) of the broom frame, a movably mounted locking member ( 17 ), which can occupy a first position that enables the rocking movement of the broom frame and a second position that disables the rocking movement of the broom frame in its leveled condition, and on which there acts the lifting drive of the lifting mechanism in such a way that the locking member occupies its second position when the lifting drive is activated.   
   
   
       2 . A support system according to  claim 1 ,
 characterized in that   the locking member ( 17 ) is mounted to swivel around an axis ( 28 ) extending parallel to the axis of rotation (L) of the roller broom ( 2 ).   
   
   
       3 . A support system according to  claim 1 ,
 characterized in that   the locking member ( 17 ) is mounted in articulated manner on the broom frame ( 6 ).   
   
   
       4 . A support system according to  claim 3 ,
 characterized in that   the point of action of the lifting drive ( 26 ) and the bearing of the locking member ( 17 ) are disposed on the broom frame ( 6 ), on different sides of the broom frame.   
   
   
       5 . A support system according to  claim 1 ,
 characterized in that   the locking member ( 17 ) is formed as a bracket ( 18 ) provided with two cheeks ( 19 ,  20 ), which bracket embraces the pendulum bearing ( 14 ) between the support part ( 5 ) and the broom frame ( 6 ).   
   
   
       6 . A support system according to  claim 5 ,
 characterized in that the support part ( 5 ) is provided adjacent to the pendulum bearing ( 14 ) with respective stops for each of the two cheeks ( 19 ,  20 ) of the bracket ( 18 ).   
   
   
       7 . A support system according to  claim 1 ,
 characterized in that   the locking member ( 17 ) in its first position represents part of a stop device limiting the rocking movement of the broom frame ( 6 ).   
   
   
       8 . A support system according to  claim 7 ,
 characterized in that   shock-absorbing buffer elements ( 31 ,  32 ) are disposed on the locking member ( 17 ).   
   
   
       9 . A support system according to  claim 1 ,
 characterized in that   the lifting mechanism ( 4 ) comprises a parallelogram-type linkage ( 8 ).   
   
   
       10 . A support system according to  claim 9 ,
 characterized in that   the parallelogram-type linkage ( 8 ) comprises two double link arms ( 9 ,  10 ), wherein the link-arm pairs of the two double link arms respectively receive the support part ( 5 ) and the rotary support ( 3 ) between them.   
   
   
       11 . A support system according to  claim 1 ,
 characterized in that   the lifting drive ( 26 ) is disposed between the rotary support ( 3 ) and the support part ( 5 ).