... 1.75m. Suspension MechanismHeight adjustment:1.15m~1.75mFront beam extent:1.1m~1.7m(should reduce the load on ... of building structure.The suspension mechanism consists of front beam, middle beam, rear beam, front seat, rear seat, upper column, balance weight, reinforce wire ... meet the requirement of working condition, the front and rear beam as well as the height of suspension mechanism is adjustable ...