Patent ID: 9719724
Date: 2017-08-01
CPC Classifications: F27B,F27D,G01B

Claim:
1. A rotary kiln with a device for detecting straightness deviations and deformations of the rotary kiln, wherein the rotary kiln includes a rotary drum having bearing rings spaced apart from one another in the axial direction and respectively supported on rollers, roller shafts and shaft end extensions of the rollers, the device for detecting straightness deviations and deformations of the rotary kiln comprises scanning devices that operate in a contactless fashion configured to scan (a) the outer surface area of the rotary drum, (b) the bearing rings, and (c) at least one of: the rollers, the roller shafts, or the shaft end extensions of the rollers such that three-dimensional position data regarding the scanned objects is obtained, an arithmetic unit in communication with the scanning devices, wherein the three-dimensional position data is fed to the arithmetic unit that features an evaluation circuit in order to evaluate the three-dimensional position data with respect to the occurrence of a deviation of at least two of (i) the rotary kiln axis from a straight line, (ii) a deviation of the rotary drum from a cylindrical shape and (iii) a deviation of the rotational axes of the rollers from a line extending parallel to the rotary kiln axis, wherein the coverage area of the at least one of the scanning devices corresponds to an axial section of the rotary kiln, the scanning devices are distributed along the length of the rotary kiln, wherein at least one stationary reference point or at least one reference object is arranged within the coverage area of each scanning device distributed along that length, and the arithmetic unit is configured for correlating the three-dimensional position data with the respective reference point in order to obtain relative position data, and for combining and jointly evaluating the relative position data of several axial sections.