Braking fault of gantry crane trolley
The gantry crane is mainly used for loading and unloading operations of outdoor freight yards, material yards and bulk cargoes, it has the characteristics of high site utilization, wide operating range, wide adaptability and versatility, can be widely used in port yards, factory, workshop.
For large gantry cranes, usually use an electric hoist as the lifting trolley. In the use of gantry cranes, it is common to encounter the situation that the braking distance of the lifting trolley exceeds the specified requirements. This will be analyzed below.
There are two possibilities for the braking distance of the lifting trolley to exceed the standard: one is that the nut is incorrectly adjusted, and the other is that the brake ring is seriously worn and the braking pressure of the brake spring is insufficient.
For these two cases, you only need to re-adjust the brake adjustment nut according to the requirements of the lifting trolley manual, or replace the new brake ring. In addition to the above two reasons, other reasons need to be considered, such as: oily surface on the brake surface, loose brake ring, poor brake contact of the brake ring, stuck motor coupling, failure of brake pressure spring, etc. These may cause problems in the braking distance of the lifting trolley exceeding the specified requirements.
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