Laser measurement device for centralization error

Abstract

The invention discloses a laser measurement device for a centralization error. The laser measurement device is composed of a first to-be-measured shaft, a laser emission device, a second to-be-measured shaft and a laser receiving device. The laser emission device is fixed to the first to-be-measured shaft, and the laser receiving device is fixed to the second to-be-measured shaft. A laser emitter in the laser emission device emits four criss-cross laser rays at fixed intervals through two cross laser devices, and the laser receiving device can detect the precise positions and width of the laser rays emitted by the laser emission device. The centralization error of two shafts, namely, the first to-be-measured shaft and the second to-be-measured shaft, can be measured indirectly at one position, the advantages of being fast, accurate and convenient and easy to use are achieved, and a traditional method can be completely replaced. The laser measurement device can be applied to detection and adjustment of the centralization error of two linkage rotary shafts in the mounting, debugging and maintenance process of a rotary machine.

Description

technical field [0001] The invention relates to a laser measuring device for centering errors, in particular to a detection and adjustment device for centering errors of two connected rotary shafts during installation, debugging and maintenance of rotary machines. Background technique [0002] With the rapid development of modern industry, the safe, reliable and continuous operation of rotating machinery is very important. Once a fault occurs and the shutdown occurs, it will cause huge economic losses and may also have serious social impacts. Among all kinds of common faults of rotating machinery, the misalignment fault of the rotor system is one of the most frequent faults, accounting for about 60% of the total faults. Because the operation of the rotor in the state of misalignment will cause the deflection of the shaft, mechanical vibration and wear of the bearing, etc., it is quite harmful to the stable operation of the system. Therefore, the alignment error between the r...

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Problems solved by technology

However, in China, few scholars have conducted in-depth research on the measurement of centering errors. At present, most of them use feeler gauges, dial gauges and other testing methods to complete the measurement in my country. Obviously, the accuracy is not high.

In recent years, some enterprises have introduced imported laser alignment instruments. In the actual operation process, it is necessary to manually rotate the measuring instrument to different angles for measurement, and the measuring instrument must be reset to zero for alignment many times during the alignment process. The operation is cumbersome and takes a long time, not only the operation is complicated, but also the price is expensive and it is not suitable for popularization

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