Application of a Control Method for Vertical Frame Lifting Device
A new control method and application of vertical frame lifting device is described.By utilizing the torque output characteristics of the limited frequency conversion device and combining with the actual lifting status of the vertical frame,the PLC control system controls the lifting operation according to the pre-set lifting torque value.When performing vertical frame lifting operations,the output torque of the variable frequency device is controlled to within the pre-set allowable range to ensure that the lifting mechanism will not be overloaded and cause equipment damage due to unstable on-site conditions such as jamming or over travel,thereby preventing major equipment accidents caused by lifting device damage.After being applied on site,the method avoids the adverse effects of component status failure on vertical frame lifting operations in harsh environments,solves the problem of frequent damage to vertical frame lifting devices,and eliminates lifting device failures caused by vertical frame lifting operations.
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