Method for evaluating inclination angle of mast of platform hoist vehicle has arrangement of two parallelogram links and potentiometer to measure angle between them

摘要

The platform hoist mast (1) is inclines at an angle alpha to the vehicle body according to the rotation of a resilient bearing (2) altering the form of a parallelogram (4) to a second parallelogram (5) having one end fixed to the vehicle body (3). A potentiometer (6) records the angle alpha .