Strength Calculation and Mechanical Fault Analysis of 3 000 t·h-1 Bridge Grab Ship Unloader under Wind Load
Taking 3 000 t·h-1 bridge grab ship unloader as the analysis object,the wind load of the structure in non-working state is calculated.With the maximum wind speed of 55 m·s-1 and the wind pressure of 1 900 N·mm-2 as the wind load input,it is converted into three working conditions according to the wind direction and combined with the fixed load.The results show that the maximum structural stress is 114.728 MPa under the combined load of fixed load plus crosswind and rear crosswind,which is about 14.5%higher than the other two conditions.Then,the faults are sorted out and counted according to the practical application.Due to the large structure,many parts and many fault points of the ship unloader,the mechanical faults of the ship unloader are classified according to the fault sources,and specific methods and measures are provided for the elimination of various faults.In practice,it is found that the use of modern smart phones for real-time noise monitoring has many advantages,such as low cost,good monitoring effect,and can play a good role in fault warning and fault source search.In the maintenance of ship unloader or similar equipment,these means can be promoted and used.
bridge type grab ship unloaderstructural strengthmechanical failure
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