How to Prevent Rail Gnawing

Nowadays, industrial cranes have become essential lifting equipment in most areas. So we attach great importance to the safety performances of cranes. Once the rail gnawing happens, it may cause great harm and lethal crane accident. While there are so many possible reasons that result in rail gnawing: contact ratio of the cab and track, the gradient, track gauge, and all the errors of construction technology parameters are all have a chance to cause the rail gnawing. The traditional examination methods have great limitations, and it’s hard to realize the precautionary measures for rail gnawing.
 

1. In such case, the techniques for preventing rail gnawing become widely used. The techniques are only conducted by electrical methods to regulate the gantry cranes. And the techniques can be repeatedly used to modulate within a small area, but they can’t eliminate rail gnawing completely. So the longer time you use the method, the more influence you can see. The methods of preventing rail gnawing can effectively reduce the consumption costs for the equipments, such as the cartwheels, couplings, reducers, electrical machines, and etc. They are also alleviate the rivalry between the production span and billet, reduce the labor cost for repairmen, and lower the labor intensity. Moreover, the methods avoid deformation of the body structure, protect the body, track, roof beam, and guarantee the safety working performance of the cranes.

rail gnawing


2. We can also improve the stiffness, especially the horizontal stiffness, to prevent the rail gnawing. For example, the main beams usually select the excellent box beam with great stiffness; the level platform on the both side assist to enlarge the horizontal stiffness of the beam; strengthen the clapboard of the bias-rail box, and adapt lateral structure; connect girder and end girder through rigid coupling to form the steel-frame structure in a horizontal plane.
 

3. Due to the ratio of the span and basal spur is inversely proportional to the allowed deflection of the crane; it guarantees the crane can swing freely. When the crane exceeds the allowed deflection, the metal devices will reallocate the working resistance, so that the both ends tend to be consistent and work synchronously.