Lifting device for heavy loads, allows lifting and back masts to rotate about counterweight

摘要

#CMT# #/CMT# The masts can rotate about the counterweight (9-11, 13) depending on the equilibrium situation between the load (6) and counterweight. #CMT# : #/CMT# The device comprises at least one lifting mast (1a), a back mast and at least one counterweight optionally comprising soil or other loose ballast material. The masts optionally form an A-frame. #CMT#USE : #/CMT# For lifting heavy bulky loads. #CMT#ADVANTAGE : #/CMT# The lifting device and counterweight do not have to stand on a base, allowing greater flexibility of use and making it more easily transportable. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a rear view of the lifting device. 1a : double lifting mast 2 : double back mast 6 : load 9 : ballast 10 : ballast platform 11 : underground ballast 13 : ballast column.