Process for the reduction of the wear at the bucket elevator lifting of the bucket chains excavators

摘要

The geometrical shape of the sprocket wheel, as the power transmission element between the drive and excavating member as an octagon, as a sprocket wheel leads, in the case of a bucket chains on the basis of the previously constant sprocket wheel rotational number, of the periodically changing effective radii and wear of specific influencing factors result in a pulsating chain or track speed. By use of the regulation of the change in velocity of the chain is to be avoided. Dollars a the chain or track speed is detected by means of a non-contacting measurement method. A measuring device supplies a frequency proportional to continuously. This is a frequency / analog converter is supplied to the unity signal proportional to a speed as the regulating variable for the speed of the direct drives produces. Dollars a by this method, a uniform chain or track speed of the bucket elevator lifting chains achieved at a bucket excavators.