A Study of Ergonomic Evaluation with a Simulation Analysis of Workover Rig Driller Operation

A digital 50th percentile dummy of Chinese males was built, and the AnyBody Modeling System was used for an inverse dynamics simulation of driller operation with a workover rig. The muscle activation degree of relevant muscle groups was used as a core indicator for ergonomic evaluation, to investigate the key layout parameters of the operation cabin—the functional relationship between the position of the brake pedal and the muscle activation degree of relevant muscle groups. Regression analysis was employed to determine the weight coefficient of relevant muscle groups, to build a model for the evaluation of overall comfort level of driller operation, and reveal the muscle fatigue characteristic of muscle groups participating in driller operation, thus providing an accurate basis for the fast screening and optimization of layout plans for operation cabins of workover rigs.