The daily inspection and maintenance of explosion-proof bridge cranes, in addition to complying with the similar inspection items of other bridge cranes, also includes the following main items:
(1) Keep the whole machine and the environment clean. Remove debris and flammable and explosive items in the crane and the environment, technicians should regularly check the concentration of explosive mixtures in the crane operating environment, ensure that the environment has good ventilation and heat dissipation conditions, and control the ambient temperature. During operation, check that the surface temperature of each device must not exceed the specified high temperature.
(2) Each equipment component should be installed without skew and collision phenomenon, no abnormal vibration and noise.
(3) Check the mechanical and electrical equipment, parts of the shell should be free of cracks and damage to the explosion-proof performance of the mechanical deformation. The cable inlet should be sealed reliably, and the unused cable holes should also be sealed.
(4) All kinds of protection, interlocking, detection, alarm, grounding and other devices should be complete, complete and reliable. Whether the explosion-proof luminaire shall maintain the integrity of its explosion-proof structure and protective cover in accordance with the regulations, and the surface temperature of the luminaire shall not exceed the specified value.
(5) When the following situations are found in the operation of the crane, the driver should take emergency measures and stop the machine, and notify the personnel for inspection and treatment in time.
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