1. Radial alignment of the coupling

When the coupling is aligned, vertical adjustment should be carried out first. The thickness of the front and rear foot pads can be calculated from the three-point detection data to detect the offset of the two axes. The diameter of the outer edge of the movable end coupling plus the distance from the outer edge of the coupling to the center of the rod hole of the axial dial gauge; the distance from the end face of the movable end coupling to the center of the front foot bolt of the movable end; coupling production equipment The distance between the front and rear bolt centers of the movable end. From the above data, the coupling factory can know the thickness of the front and rear gaskets. If the motor is higher than the fixed end, shim should be reduced; if the motor is lower than the fixed end, shim should be added.

After adjusting the vertical direction, the detection data of each point has changed, it should be reset at the 1 point position, and the data of 2 and 3 points should be measured again. After adjustment, just check whether the sum is within the allowable error range.

2. Alignment of coupling principle

The projection of the movable end face circle of the motor on the fixed end face is approximately regarded as a perfect circle, because the distance from the center of the movable end to the fixed end face remains unchanged. If you want to meet at the same time, the movable end axis and the fixed end axis are on the same line, which is just an ideal alignment state. In actual alignment, set the allowable error first, and when the error generated during alignment is within the allowable error range, alignment ends. In many cases, the lower detection point of the pump cannot be detected, and the alignment work cannot be performed.

3. Coupling alignment steps for three-point metering method

(1) Fix the magnetic fixing seat, the measuring rod and the dial indicator on the couplings of the fixed end and the movable end respectively; (2) Turn the shaft to the 1 o'clock position, and clear the two dial indicators respectively; (3) Then turn the shaft to the 2 o'clock position and read the data; (4) Turn the shaft to the 3 o'clock position and read the data; (5) Calculate separately (6) Loosen the front and rear bolts of the motor, Pad the rear feet with thick gaskets, move the motor to make the two couplings as close as possible, and then tighten the front and rear bolts of the motor, clear the two dial gauges at 1 o'clock, and read at 2 and 3 o'clock. The data is compared with the set allowable error value. If the accuracy requirements are not met, repeat the above steps 2-6; (7) After step 6 is satisfied, loosen the front and rear bolts of the motor slightly, and keep the dial indicator at 3 o'clock Tap the front and rear feet of the movable end, and the middle of the movable end with a copper rod, and perform horizontal alignment until it is within the allowable error range; (8) After step 7 is satisfied, tighten the front and rear foot bolts of the movable end , The alignment is over.