Abseiling Unit with a Winding Function

Abstract

The invention relates to an abseiling device having a winch function, comprising a guide roller ( 2 ) which is mounted so that it can rotate in both directions and is intended for the non-slip guidance of a rope element ( 15 ), a transmission mechanism with a centrifugal brake ( 7 ), the large gearwheel ( 4 ) of which mechanism is mounted securely against torque on a common shaft ( 3 ) with the guide roller ( 2 ), and a hand crank ( 8 ) for manually actuating the winch function, which acts on the drive shaft ( 6 ) of the small gearwheel ( 5 ) of the transmission mechanism. Positive locking of the abseiling device at a point which is less subject to loading and thus ensures greater safety is provided according to the invention by virtue of the common shaft ( 3 ) of the guide roller ( 2 ) and large gearwheel ( 4 ) being able to be locked positively.

1 - 4 . (canceled) 
   
   
       5 . An abseiling unit for a traction cable, comprising
 a guide roller for non-slip guidance of said traction cable, the guide roller being rotatable in two rotational directions,   a step-up transmission comprising a small gearwheel and a large gearwheel; and   a hand crank for manually performing a winding function,   wherein the hand crank engages on a drive shaft of the small gearwheel,   wherein the large gearwheel is mounted in a torque-secure manner on a common shaft with the guide roller, and   wherein a locking unit is provided for positively locking of said common shaft in at least one rotational direction.   
   
   
       6 . The abseiling unit as claimed in  claim 5 , wherein the locking unit can be switched to act in either rotational direction. 
   
   
       7 . The abseiling unit as claimed in  claim 5 , wherein the locking unit comprises a ratchet. 
   
   
       8 . The abseiling unit as claimed in  claim 5 , wherein the locking unit comprises a spring-loaded bolt. 
   
   
       9 . The abseiling unit as claimed in  claim 5 , further comprising a centrifugal brake, the centrifugal brake engaging the drive shaft of the small gearwheel. 
   
   
       10 . The abseiling unit as claimed in  claim 5 , wherein the small gearwheel and the large gearwheel intermesh each other. 
   
   
       11 . An abseiling unit for a traction cable, comprising
 a guide roller for non-slip guidance of said traction cable, the guide roller being rotatable in two rotational directions,   a step-up transmission comprising a small gearwheel and a large gearwheel, and   a hand crank for manually performing a winding function,   wherein the hand crank engages on a drive shaft of the small gearwheel,   wherein the large gearwheel is mounted in a torque-secure manner on a common shaft with the guide roller,   wherein a locking unit is provided for positively locking of said step-up transmission in a loaded rotational direction, and   wherein the step-up transmission is freely rotatable in a direction opposed to the loaded rotational direction.   
   
   
       12 . The abseiling unit as claimed in  claim 11 , wherein said locking unit is provided for positively locking one of said drive shaft and said common shaft. 
   
   
       13 . The abseiling unit as claimed in  claim 12 , wherein said locking unit is locking said common shaft. 
   
   
       14 . The abseiling unit as claimed in  claim 11 , wherein at least one of said drive shaft and said common shaft comprises a portion having a circumferential toothing, and wherein said locking unit can be engaged with said toothing. 
   
   
       15 . The abseiling unit as claimed in  claim 11 , wherein the locking unit can be switched to act in either rotational direction. 
   
   
       16 . The abseiling unit as claimed in  claim 15 , wherein the locking unit comprises a rotational direction switch for selectively engaging a blocking catch with one of said drive shaft and said common shaft. 
   
   
       17 . The abseiling unit as claimed in  claim 11 , wherein the locking unit comprises a ratchet. 
   
   
       18 . The abseiling unit as claimed in  claim 11 , wherein the step-up transmission is accommodated in a housing. 
   
   
       19 . The abseiling unit as claimed in  claim 18 , wherein said housing comprising a first housing part and a second housing part. 
   
   
       20 . The abseiling unit as claimed in  claim 19 , wherein the common shaft is partially arranged in each of said first housing part and said second housing part. 
   
   
       21 . The abseiling unit as claimed in  claim 19 , wherein the drive shaft is partially arranged in each of said first housing part and said second housing part. 
   
   
       22 . The abseiling unit as claimed in  claim 19 , wherein the large gearwheel and the small gearwheel are arranged in the same of said first housing part and said second housing part. 
   
   
       23 . The abseiling unit as claimed in  claim 19 , wherein said first housing part and said second housing part are assembled using at least one screw. 
   
   
       24 . The abseiling unit as claimed in  claim 11 , further comprising a suspended support bracket. 
   
   
       25 . The abseiling unit as claimed in  claim 11 , further comprising a centrifugal brake, the centrifugal brake engaging the drive shaft of the small gearwheel. 
   
   
       26 . An abseiling unit for an abseiling cable, comprising a housing rotatably accommodating a first shaft and a second shaft,
 wherein a first gearwheel and a centrifugal brake are arranged on said first shaft,   wherein a second gearwheel and a pulley are arranged on said second shaft,   said first gearwheel intermeshing with said second gearwheel,   at least one of said first shaft and said second shaft protruding out of said housing for coupling to a torque transmitting element,   wherein said pulley comprises a circumferential groove for slip-free receiving said abseiling cable,   wherein the housing comprises at least one opening for the passage of said abseiling cable,   wherein a locking unit is provided for positively locking one of said first shaft and said second shaft in one of a first rotational direction and a second rotational direction, while said pulley is freely rotatable in the other of said first rotational direction and said second rotational direction,   such that a load can freely be lifted up using said abseiling cable while the abseiling cable is secured against a downward movement under said load.   
   
   
       27 . The abseiling unit as claimed in  claim 26 , wherein said locking unit comprises a first engagement portion and a second engagement portion, said first engagement portion and said second engagement portion alternatively engaging a toothed portion of said one of said first shaft and said second shaft. 
   
   
       28 . The abseiling unit as claimed in  claim 26 , wherein said locking unit is coupled to a protruding portion of one of said first shaft and said second shaft.