Ways to diagnose power failure issues in construction cranes and solutions

Thread Content

Construction cranes are an essential and quite common type of construction machinery in modern times, and their presence can be seen at many construction sites. The development of the industry has driven the diversification and technological advancement of construction machinery. Construction cranes, in turn, play a vital role amid the boom in infrastructure development. However, their complex structures also lead to an increasing variety of equipment failures. Among them, lack of driving power is a common fault manifestation in construction cranes, and it can be identified and resolved in the following ways. The first scenario is that the construction crane has weak performance in operation but the engine does not stall. In such cases, we can determine the situation by checking whether there are any obvious abnormalities in the operating speed of the construction crane; if no abnormalities exist, the operator can check whether the maximum output pressure of the main pump, that is, the system’s overflow pressure, is below the specified value. Specifically, the set value of the overload relief valve in the hydraulic circuit of the construction crane can be adjusted by turning the adjustment screw.