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Equipment Maintenance Safty Plan

Ground Bearing Pressure
Ground Reinforcement Plan

Bearing strength test and securing the required bearing capacity
HANCHANG

Mobile and crawler cranes

1Ground Pressure

The ground load-bearing capacity and the monitoring of the ground pressure are decisive for the safe operation of a crane. Ground Pressure Visualization calculates the current ground pressure of the machine in real time and compares it with the specified safety limits that the operator has entered in the control system

The ground pressure is displayed on the monitor and the operator is permanently aware of whether the machine is in or approaching a critical area. Dangerous work steps can so be avoided or safely adapted in good time.

  • GROUND BEARING PRESSURE

    • Inspection of the bearing force of soil ground before equipment supply
    • Equipment supply to a construction site after the bearing force of the weak ground is tested
    • Enough bearing force secured through tramping rubble stone and reinforcing lining plate and steel plate
  • LICCON PROGRAM

    • Real-time monitoring of the bearing force in the monitor of operator seat
    • Calculation and review of bearing force with LICCON Work Planner
    • Perception of the risk of accident in advance through the display of an inclined angle in a monitor
  • LICCON PROGRAM

    • Real-time monitoring of the bearing force in the monitor of operator seat
    • Calculation and review of bearing force with LICCON Work Planner
    • Perception of the risk of accident in advance through the display of an inclined angle in a monitor

2Ground Reinforcement Plan

Ground reinforcement for crawler crane is essential work. If equipment is supplied without ground reinforcement, the ground is likely to fall. Such an accident occurs often. As for the weak ground, it is required to analyze the bearing force of soil first and to determined whether to be workable. If the bearing force is weak, it is required to plan ground reinforcement in order to secure enough bearing force before equipment is supplied and to make work safe.

  • GROUND REINFORCEMENT PLAN

    • Inspection of the ground state through preliminary field meeting before equipment supply
    • Rubble tramping and reinforcement mat installation after ground bearing force testing
    • Ground reinforcement after the assembly based on rigging plan and the determination of work sections
  • SUBSTITUTION METHOD

    • Enough bearing force secured after crane ground reinforcement (rubble tramping)
    • For equipment supply to the weak ground, it is required to make the ground firm double or triple times.
    • Reinforcement of the crane main body with steel mat (220T), and the BW section with steel plate (50T)
  • SUBSTITUTION METHOD

    • Enough bearing force secured after crane ground reinforcement (rubble tramping)
    • For equipment supply to the weak ground, it is required to make the ground firm double or triple times.
    • Reinforcement of the crane main body with steel mat (220T), and the BW section with steel plate (50T)

ACCIDENT CASE

  • Crane overturn accidents caused by strong wind and land subsidence
  • Overturn accidents caused by the excess of lifting capability and overload work
  • Overturn accidents caused by the excess of boom load and the excess of operating radius limit