Coupling manufacturer detects concentric rotation

Coupling correction of concentricity is an important part of the maintenance of rotating equipment. If the correction method is incorrect or the corrected result is inaccurate, it will cause the vibration value of the rotating equipment to exceed the standard, which seriously threatens the normal operation of the rotating equipment, especially the high speed. Equipment, the data requirements for the correction of the coupling are extremely strict.Now let's make a systematic elaboration on rotating the equipment coupling to correct the problem.

 CouplingThere are different ways to correct concentricity.According to the installation position of the rotating equipment, it is divided into two types: horizontal and vertical. Among them, horizontal is more common; according to the ease of correction, it is divided into simple correction and system correction. The result of the former is rough, and the result of the latter. The result is ideal.No matter how they are classified, their principles and analysis methods are the same.The purpose of center correction is to make the centerline of one rotor shaft a continuation curve of the centerline of the other rotor shaft.Because the shafts of the two rotors are connected by a coupling, as long as the center lines of the two pairs of wheels of the coupling are continuous, the center lines of the two rotors must also be a continuous curve.To make the center of the two pairs of wheels of the coupling continuous, the following two conditions must be met: (1). Make the centers of the two pairs of wheels coincide, that is, make the outer circles of the two pairs of wheels coincide; (2). The joint surfaces (end surfaces) of the two pairs of wheels are parallel (the two center lines are parallel).If the above two conditions are met at the same time, the centerline of the two axes is a continuation curve.If the measured values ​​are not equal, the feet need to be adjusted to meet the above two conditions.

 If the relative position of the two pairs of wheels of the coupling does not meet the above two conditions, there are two states: the mouth of the two pairs of wheels is opened, and the mouth of the two pairs of wheels is opened.Among them, the opening on the two pairs of wheels is divided into two types: the high on the motor side and the low on the motor side. The opening on the bottom of the two pairs of wheels is divided into two types: the high on the motor side and low on the motor side.The theoretical basis for the correction calculation of the coupling to the wheel is the triangle similarity principle.Use the similarity of two right-angled triangles to get the relationship between the required quantity and the known quantity, so as to calculate the specific value required.Let's take State 1 as an example for calculation.Analysis: Based on the turning side of the wheel, adjust the position of the motor side of the wheel to make the mutual position of the two pairs of wheels meet the requirements.Calculation: Suppose the diameter of the counterwheel is D, the distance between the motor side ⅹ bearing foot and its counterwheel is lXNUMX, the distance between the motor side y bearing foot and its counterwheel is l, a: the motor side counterwheel is relative to the rotor side counterwheel The mouth opening, h: the height difference between the two pairs of wheels.