Arrangement for transfer of a trolley between suspended rails and suspended rail system comprising such an arrangement

Abstract

An arrangement for safe transition of a trolley between a first and a second suspended rail when they are in an end-to-end position with each other, and for safe operation of the trolley when the rails are in un-aligned positions relative each other. The arrangement comprises a liftable first stop member, a liftable second stop member and two pairs of engaging members. The liftable stop members are adapted to block the trolley from accidentally leaving the rails when the rails are in the un-aligned positions, and to unblock the rails when the rails are in the end-to-end position. The engaging members of the pairs of engaging members are arranged to engage with each other when the rails are in the end-to-end position to lift the stop members, thereby unblocking the rails in order to allow a transition between the rails.

1 . An arrangement for safe transition of a trolley between a first and a second suspended rail when they are in an end-to-end position with each other, and for safe operation of said trolley when said rails are in un-aligned positions relative each other, said arrangement comprising:
 a liftable first stop member adapted to block said trolley from accidentally leaving said first rail when said rails are in said un-aligned positions, and to unblock said first rail when said rails are in said end-to-end position;   a liftable second stop member adapted to block said trolley from accidentally leaving said second rail when said rails are in said un-aligned positions, and to unblock said second rail when said rails are in said end-to-end position;   one pair of engaging members having a first engaging member adapted to be attached to said first rail and a second engaging member attached to said second stop member;   one pair of engaging members having a third engaging member adapted to be attached to said second rail and a fourth engaging member attached to said first stop member;   wherein said engaging members of said pairs of engaging members are arranged to engage with each other when said rails are in said end-to-end position to lift said stop members, thereby unblocking said rails in order to allow a transition between said rails.   
     
     
         2 . The arrangement according to  claim 1 , wherein said first and third engaging member each has a guide, and wherein said second and fourth engaging members each comprise a protruding portion adapted to run in respective guide, and wherein said guides each comprise at least one rising portion in order to elevate said protruding portion to lift said stop members. 
     
     
         3 . The arrangement according to  claim 2 , wherein said rising portion of said first engaging member has a rise different than that of said third engaging member. 
     
     
         4 . The arrangement according to  claim 1 , wherein said second and fourth engaging member each has a guide, and wherein said first and third engaging members each comprise a protruding portion adapted to run in respective guide, and wherein said guides each comprise at least one falling portion in order to elevate the second and fourth engaging members lift said stop members. 
     
     
         5 . The arrangement according to  claim 2 , wherein said protruding portion is a wheel portion or a pin portion. 
     
     
         6 . The arrangement according to  claim 2 , wherein said guides are grooves. 
     
     
         7 . A suspended rail system comprising a first suspended rail, a second suspended rail and an arrangement according to  claim 1 , wherein said first engaging member is attached to said first rail, and said third engaging member is attached to said second rail. 
     
     
         8 . The system according to  claim 7 , wherein said first and third engaging member each has a guide, wherein said second and fourth engaging members each comprise a protruding portion adapted to run in respective guide, wherein said guides each comprise at least one rising portion in order to elevate said protruding portion to lift said stop members, and wherein said guide of said first engaging member and said guide of said third engaging member are vertically offset relative each other. 
     
     
         9 . The system according to  claim 7 , wherein said second and fourth engaging member each has a guide, wherein said first and third engaging members each comprise a protruding portion adapted to run in respective guide, wherein said guides each comprise at least one falling portion in order to elevate the second and fourth engaging members lift said stop members, and wherein said first engaging member and said third engaging member are offset in a vertical direction relative each other. 
     
     
         10 . The system according to  claim 8 , wherein said protruding portions are facing each other. 
     
     
         11 . The system according to  claim 8 , wherein said stop members are liftable at essentially right angles relative said rails. 
     
     
         12 . The system according to  claim 8 , wherein said stop members extend into said rails through top portions of said rails. 
     
     
         13 . The arrangement according to  claim 3 , wherein said protruding portion is a wheel portion or a pin portion. 
     
     
         14 . The arrangement according to  claim 4 , wherein said protruding portion is a wheel portion or a pin portion. 
     
     
         15 . The arrangement according to  claim 3 , wherein said guides are grooves. 
     
     
         16 . The arrangement according to  claim 4 , wherein said guides are grooves. 
     
     
         17 . The arrangement according to  claim 5 , wherein said guides are grooves. 
     
     
         18 . A suspended rail system comprising a first suspended rail, a second suspended rail and an arrangement according to  claim 2 , wherein said first engaging member is attached to said first rail, and said third engaging member is attached to said second rail. 
     
     
         19 . A suspended rail system comprising a first suspended rail, a second suspended rail and an arrangement according to  claim 3 , wherein said first engaging member is attached to said first rail, and said third engaging member is attached to said second rail. 
     
     
         20 . A suspended rail system comprising a first suspended rail, a second suspended rail and an arrangement according to  claim 4 , wherein said first engaging member is attached to said first rail, and said third engaging member is attached to said second rail.