Method for detecting the settlement of the NGW-L122-90 planetary reducer base
1. Preparation work before settlement testing
Tool preparation requires a laser level (accuracy ≥0.02mm/m) or precision level to measure in longitudinal and transverse directions along the base (measurement point spacing ≤500mm). Prepare a feeler gauge (0.02-1mm specification) and a dial meter for measuring local gaps and deformations.
Confirm the status of the base to remove oil stains and rust on the base surface, ensure that the measurement surface is clean, and check whether the anchor bolts are loose or deformed.
2. Settlement detection steps
static flatness measurement
. Place the level in the four corners and center area of the base to record the horizontal error. If it exceeds 0.1mm/m (high-precision scenarios are recommended to ≤0.05mm/m), it needs to be adjusted or repaired.
Use a feeler gauge to check the fitting gap between the reducer base and the base. The insertion depth of the feeler gauge on all fitting surfaces shall not exceed 10mm, and the 0.05mm feeler gauge should not be inserted.
Dynamic retest verification: After running the reducer for 2 hours, the planeness is retested, and the allowable deviation is relaxed to 1.2 times (≤0.12mm/m). If the standard still exceeds the standard, it is confirmed that there is settlement.
Coaxiality Check Use a dial meter to detect the radial jump of the input/output shaft. If the input shaft jumps > 0.05mm or the output shaft jumps > 0.08mm, the shaft system may be deflected due to base settlement.
3. Settlement repair and long-term maintenance
Repair method
Concrete base: Refill after partial chiseling (mark ≥C20), and maintain for more than 14 days.
Steel structure base: Milling top surface to flatness ≤0.05mm/m, stress removal is required after welding.
Maintenance advice
Check the anchor bolt torque every 3 months to prevent loosening and deterioration of plane.
The coaxial degree is calibrated with a laser centering instrument every year (Error ≤0.03mm/m).
