Road Barrier And A Method For Manufacturing Thereof

Abstract

A road barrier comprising a support ( 101 ) to which a transverse beam ( 102 ) is connected via a spacer ( 110 ) such that upon impact the transverse beam ( 102 ) moves towards the support ( 101 ). The spacer ( 110 ) is movable upon impact and coupled, via coupling means ( 130, 150, 160, 170 ), with a rotatable energy absorber ( 140 ) mounted below the transverse beam ( 102 ) and comprising at least one rotor ( 142, 143 ) for absorbing in rotational movement at least part of the kinetic energy imparted to the transverse beam ( 102 ).

1 . A road barrier comprising a support ( 101 ) to which a transverse beam ( 102 ) is connected via a spacer ( 110 ) such that upon impact the transverse beam ( 102 ) moves towards the support ( 101 ), characterized in that the spacer ( 110 ) is movable upon impact and coupled, via a coupling ( 130 ,  150 ,  160 ,  170 ), with a rotatable energy absorber ( 140 ) mounted below the transverse beam ( 102 ) and comprising at least one rotor ( 142 ,  143 ) for absorbing in rotational movement at least part of the kinetic energy imparted to the transverse beam ( 102 ). 
     
     
         2 . The road barrier according to  claim 1 , wherein the rotatable energy absorber ( 140 ) is fixed to the support ( 101 ). 
     
     
         3 . The road barrier according to  claim 1 , wherein the coupling comprises a rack ( 130 ) having a first toothed bar ( 131 ) coupled via a toothed wheel ( 120 ) with a toothed bar ( 111 ) of the spacer ( 110 ) and a second toothed bar ( 132 ) coupled via a toothed wheel transmission ( 141 ,  144 ,  145 ,  146 ) with the at least one rotor ( 142 ,  143 ). 
     
     
         4 . The road barrier according to  claim 3 , wherein the spacer ( 110 ) is configured to move in a substantially horizontal direction and the rack ( 130 ) is configured to move in a substantially vertical direction. 
     
     
         5 . The road barrier according to  claim 3 , wherein the rack ( 130 ) comprises a compressible element ( 133 ). 
     
     
         6 . The road barrier according to  claim 1 , wherein the coupling comprises a strand ( 150 ) connected at a first end ( 151 ) to the spacer ( 110 ) and at a second end ( 152 ) to the rotatable energy absorber ( 140 ). 
     
     
         7 . The road barrier according to  claim 6 , wherein the strand ( 150 ) is wound at the second end ( 152 ) around a driving shaft ( 147 ) of the rotatable energy absorber ( 140 ). 
     
     
         8 . The road barrier according to  claim 6 , wherein the strand ( 150 ) is connected at the second end ( 152 ) to a toothed bar ( 154 ) coupled with a toothed wheel transmission ( 141 ) of the rotatable energy absorber ( 140 ). 
     
     
         9 . The road barrier according to  claim 1 , wherein the coupling ( 130 ,  150 ) and the rotatable energy absorber ( 140 ) are housed within the support ( 101 ). 
     
     
         10 . The road barrier according to  claim 1 , wherein the rotatable energy absorber ( 140 ) is fixed to a structure ( 103 ) offset horizontally from the support ( 101 ). 
     
     
         11 . The road barrier according to  claim 10 , wherein the coupling comprises a vertical coupling ( 160 ) in a form of a rotatable shaft ( 160 ) having a first end ( 161 ) coupled with the spacer ( 110 ) and configured to be induced into rotation upon movement of the spacer ( 110 ), and a second end ( 162 ) located below the first end ( 161 ) and coupled with a first end ( 171 ) of a horizontal coupling ( 170 ) having its second end ( 172 ) coupled with the at least one rotor ( 142 ). 
     
     
         12 . The road barrier according to  claim 1 , wherein the spacer ( 110 ) comprises a compressible element ( 112 ). 
     
     
         13 . A method for manufacturing of a road barrier comprising a support ( 101 ) to which a transverse beam ( 102 ) is connected via a spacer ( 110 ) such that upon impact the transverse beam ( 102 ) moves towards the support ( 101 ), wherein the spacer ( 110 ) is movable upon impact and coupled, via a coupling ( 130 ,  150 ,  160 ,  170 ), with a rotatable energy absorber ( 140 ) fixed to the support ( 101 ) below the transverse beam ( 102 ) and comprising a toothed wheel transmission ( 141 ,  144 ,  145 ,  146 ) driving at least one rotor ( 142 ,  143 ) for absorbing in rotational  30  movement at least part of the kinetic energy imparted to the transverse beam ( 102 ), the method comprising:
 forming and balancing of the at least one rotor ( 142 ,  143 ), 
 forming and hardening of the toothed wheel transmission ( 141 ,  144 ,  145 ,  146 ) of the rotatable energy absorber ( 140 ) and 
 forming of the support ( 101 ), the coupling ( 130 ,  150 ,  160 ,  170 ) and the transverse beam ( 102 ) and 
 assembling the elements to make the road barrier.