Coaxiality adjusting-correcting method for long shaft coupler

Abstract

The invention discloses a coaxiality adjusting-correcting method for a long shaft coupler. The adjusting-correcting method comprises the following steps that an adjusting-correcting device is arrangedbetween a first half-coupler and a second half-coupler before a connecting shaft is arranged between the two half-couplers which are oppositely arranged at intervals; the adjusting-correcting deviceis connected with the first half-coupler, and an alternative plane is formed at one end, facing the second half-coupler, of the adjusting-correcting device; the alternative plane is parallel to the measuring reference end surface of the first half-coupler facing towards the second half-coupler, and the alternative plane can be driven to rotate coaxially when the first half-coupler rotates; and a dial indicator is arranged on the basis of taking the alternative plane as a reference, the coaxiality between the two half-couplers is measured through the dial indicator, and if the coaxiality does not reach the standard, the first half-coupler and / or the second half-coupler is moved and adjusted to the position where the coaxiality between the two half-couplers reaches the standard. By means ofthe arrangement of the alternative plane, the problem that in the prior art, the distance between two half-couplers are too long and therefore, the measurement cannot be directly carried out through adial indicator is solved, then the coaxiality between the two half-couplers can be conveniently and rapidly measured, and measurement data support is provided for adjustment and correction.

Description

technical field [0001] The invention relates to the technical field of long-axis couplings, in particular to a method for adjusting the coaxiality of long-axis couplings. Background technique [0002] In the installation project of metallurgical machinery and equipment, especially the installation of large-scale rotating machinery and equipment, the requirements for the coaxiality of the drive shaft of the motor and reducer are very strict. According to the general requirements of the national standard "GB50231-2009", the installation accuracy of the radial displacement of the two axes must be controlled within 0.05mm, and the inclination of the two axes must be controlled within 0.05 / 1000. And theoretically speaking, the higher the coaxiality adjustment accuracy of the coupling, the lower the vibration and noise generated when the equipment rotates, which can effectively prolong the service life of the bearings and bearing bushes and improve the safety of the equipment duri...

AI Technical Summary

Problems solved by technology

However, the above adjustment method is only applicable to the situation where the half-couplings on both sides are directly connected. Sometimes when the metallurgical system rotating mechanical equipment is installed, the half-couplings on both sides are not directly connected, and there is usually a connecting shaft between them. , usually the matching connecting shaft adopts a cardan shaft, but the cardan shaft is not suitable for transmitting high speed and high torque due to its own defects, and the transmitted torque will be greatly reduced, so after production practice, there are Some manufacturers have chosen to change the cardan shaft to a rigid straight shaft

The selection of the rigid straight shaft greatly improves the coaxiality requirements of the coupling. Before use, connect the two halves of the coupling to the output shaft of the motor and the input shaft of the reducer, and then correct the gap between the coupling halves on both sides. Coaxiality, but using the conventional method, first of all, due to the large distance between the half-couplings on both sides, it is impossible to directly use the dial indicator to measure and adjust. Secondly, if the intermediate connecting shaft is pre-installed on the half-coupling of the motor output shaft, then erected Dial indicator measurement and adjustment will be difficult to adjust the position of the motor due to the heavy weight of the intermediate connecting shaft and the side turning of the motor, and it is difficult to set up the dial indicator due to the drooping of its own weight, which will eventually lead to a greatly reduced adjustment effect

In this case, a laser alignment instrument is usually used to adjust the coaxiality of the coupling. The laser alignment instrument is favored by engineers and technicians because of its high adjustment accuracy and wide application range, but it is expensive and difficult to operate. The process is complex, cumbersome and not widely used

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