Electric single girder gantry crane
Electric single girder gantry crane. Light weight and good wind resistance. However, because of the many welding points and the shortcomings of the truss itself, the truss beam also has the disadvantages of large deflection, small stiffness, relatively low reliability, and frequent detection of solder joints. It is suitable for places with low safety requirements and small lifting capacity. The operator must be able to close the main power when he or she is admitting no one on the platform or track. Metallurgical single girder crane when the power supply circuit breaker locking or sign shall be the original people removed before closing the main power supply. In general, the weight below 50t, in the span of less than 35m, no special requirements, should use a single main beam. If the door leg width is large, the operation speed is high, or the heavy and heavy components are often hoisted, it is advisable to choose two beam gantry cranes.
In the operation of the electric single main beam gantry crane, there should be a certain space scale between the external scale of the gantry crane and the goods of the yard and the passage of the vehicle to help the loading and unloading operation. When a general transport vehicle is loading and unloading in the span, the frequency converter crane should stick to 0.7m distance above the door leg. The sling operations should be with the delivery of the vehicle has a distance of more than 0.5m, the goods window legs, there should be a distance of more than 0.5m. Double girder Longmen crane because the manufacturer's planning is not reasonable: there is no special ventilation hole in the planning process or the small ventilation hole is too small and so on. It will form the leakage of the pressure imbalance in the reducer, after all, it will lead to the leakage of the lubricating oil of the reducer.
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