Click image to view full size image
Derrick Crane
The derrick crawler crane is used for hoisting, alignment and assembly of girder block or steel case girder for road bridge.
It is mainly consisted of components such as seat support, column, slant support, variable-angle boom and angle-changing mechanism, hanger, hoister, pulley set, elevating mechanism, forward-moving mechanism, front/rear anchor mechanism, cab, electric system, hydraulic system, etc...
The derrick crawler crane is used for hoisting, alignment and assembly of girder block or steel case girder for road bridge.
It is mainly consisted of components such as seat support, column, slant support, variable-angle boom and angle-changing mechanism, hanger, hoister, pulley set, elevating mechanism, forward-moving mechanism, front/rear anchor mechanism, cab, electric system, hydraulic system, etc...