Manually-moved scaffolding

Abstract

A manually-moved scaffolding comprising one basic frame; one transfer assembly associated with the basic frame and adapted to move the scaffolding on the ground along at least one direction of transfer; one supporting surface associated with the basic frame and adapted to support at least one operator; a movement device/unit/component/structure or the like adapted to move the supporting surface with respect to the basic frame, along at least one substantially vertical direction of movement so as to arrange the supporting surface at different heights.

1 . A manually-moved scaffolding, comprising:
 at least one basic frame;   at least one transfer assembly associated with said basic frame and adapted to move said scaffolding on the ground along at least one direction of transfer;   at least one supporting surface associated with said basic frame and adapted to support at least one operator; and   movement means adapted to move said supporting surface with respect to said basic frame, along at least one substantially vertical direction of movement so as to arrange said supporting surface at different heights.   
     
     
         2 . The manually-moved scaffolding according to  claim 1 , wherein said basic frame comprises:
 at least one guiding framework of said movement means extending parallel to said at least one substantially vertical direction of movement; and   at least one supporting structure of said at least one transfer assembly.   
     
     
         3 . The manually-moved scaffolding according to  claim 1 , wherein said movement means comprise at least one first worm gear drive shaft extending parallel to said at least one substantially vertical direction of movement and at least a first threaded wheel associated with said supporting surface and meshing on said at least one first worm gear drive shaft, the rotation of said at least one first worm gear drive shaft causing the shift of said first threaded wheel along said at least one substantially vertical direction of movement. 
     
     
         4 . The manually-moved scaffolding according to  claim 3 , wherein said movement means comprise at least one second worm gear driven shaft and at least a second threaded wheel meshing on said at least one second worm gear driven shaft, the rotation of said at least one second worm gear driven shaft, based on the rotation of said at least one first worm gear drive shaft, causing the shift of said second threaded wheel along said at least one substantially vertical direction of movement. 
     
     
         5 . The manually-moved scaffolding according to  claim 4 , wherein said movement means comprise motion transmission members from said at least one first worm gear drive shaft to said at least one second worm gear driven shaft. 
     
     
         6 . The manually-moved scaffolding according to  claim 5 , wherein said motion transmission members comprise at least two crown gears associated with a lower end of said at least one first worm gear drive shaft and with a lower end of said at least one second worm gear driven shaft respectively, and at least one chain element wrapped at least partly on said at least two crown gears and meshing thereon. 
     
     
         7 . The manually-moved scaffolding according to  claim 6 , wherein said movement means comprise at least one manual actuating system associated with said at least one first worm gear drive shaft. 
     
     
         8 . The manually-moved scaffolding according to  claim 7 , wherein said manual actuating system comprises:
 at least one actuating lever manually movable by said operator; and   kinematic linking members of said at least one actuating lever to said at least one first worm gear drive shaft and adapted to set said at least one first worm gear drive shaft in rotation.   
     
     
         9 . The manually-moved scaffolding according to  claim 8 , wherein said kinematic linking members comprise:
 at least a first gear wheel associated with said at least one first worm gear drive shaft and rotatable around a relevant axis substantially parallel to said at least one substantially vertical direction of movement; and   at least a second gear wheel kinematically connected to said actuating lever and meshing on said first gear wheel.   
     
     
         10 . The manually-moved scaffolding according to  claim 9 , wherein said at least one actuating lever is movable in rotation around an axis of rotation based on a rotational action exerted by said operator and is configured to transfer said rotational action around said axis of rotation to said second gear wheel. 
     
     
         11 . The manually-moved scaffolding according to  claim 10 , wherein said axis of rotation is substantially parallel to said at least one substantially vertical direction of movement. 
     
     
         12 . The manually-moved scaffolding according to  claim 11 , wherein said actuating lever is movable by oscillation based on a thrust action exerted by said operator, said kinematic linking members comprising at least a first rod mechanism and at least a first crank kinematically connected to said second gear wheel, adapted to convert the oscillatory motion of said actuating lever into a rotation of said at least one first worm gear drive shaft. 
     
     
         13 . The manually-moved scaffolding according to  claim 1 , wherein said at least one transfer assembly comprises manually-operated propelling means, adapted to move said manually-moved scaffolding along said at least one direction of transfer. 
     
     
         14 . The manually-moved scaffolding according to  claim 13 , wherein said propelling means comprise:
 at least one propulsion command member, associated with said supporting structure and movable by oscillation with respect to said supporting structure;   at least one conversion assembly, driven by said command member and adapted to convert the alternating motion imparted by said command member into a circular motion; and   at least one motion transmission assembly from a driving axle, associated with said conversion assembly, to a driven axle, associated with at least one movement member, said transmission assembly comprising at least one transmission shaft perpendicular to said driving axle and to said driven axle and kinematically connected to said driving axle and to said driven axle by means of respective gears, wherein   herein-said command member is movable by oscillation thanks to a thrust action exerted by said operator so that said manually-moved scaffolding is manually propelled, wherein said conversion assembly comprises at least a second rod mechanism and at least a second crank adapted to convert the alternating motion of said command member into a rotation of said driving axle.   
     
     
         15 . The manually-moved scaffolding according to  claim 1 , wherein said guiding framework is associated in a removable manner with said supporting structure.