Method for lifting a concrete product with a lifting beam and lifting beam

摘要

Method for lifting a concrete product with one arm (1) lifting, wherein the method boom moves over the concrete product to be lifted with a crane hook (8, 8 ') lifting the boom are fixed in lifting loops are located in the concrete product to be lifted, and lifting is carried out by lifting the lifting arm with the concrete product with a crane, characterized in that the lifting arm first moves above the concrete product to be lifted, then the automatic control system of the arm is activated lifting the location of at least one lifting loop in the concrete product to be lift is detected by the system (15) of automatic control of the arm (1) hoisting, the control system moves at least one hook (8, 8 ') of elevation along the boom to the location of lifting loop and the system (15) control moves arm (1) lifting in relation to the concrete product to be lifted after detecting the location of a first lifting loop in order to detect the location of a second lifting loop and to put the hooks (8 , 8 ') of elevation above said lifting loops.