What could be the possible cause of abnormal noise or unstable feeling in the fixed plate?

The abnormal noise from the fixed plate is usually caused by loose mechanical connections or damaged components. The most common reason is the loosening of fasteners such as anchor bolts and adjustable shims, resulting in collision and friction sounds between the platform and the foundation. In addition, cracking of internal reinforcement ribs, partial open welding of panels (if it is a welded structure), or loosening of T-shaped groove inserts can also produce abnormal noise under stress, and immediate shutdown inspection is required.

The core issue of instability is the failure of the support system or deformation of the foundation. In most cases, the platform forms a "seesaw" effect due to the uneven leveling of the pad iron, virtual contact of the support points, or local ground settlement. Long term overloading or uneven stress may also cause slight plastic deformation of the platform itself or supporting structure, damaging the original stable plane.

The solution needs to be systematically investigated from the outside in. Firstly, check and re tighten all anchor bolts, recheck and level each support point with a spirit level. If the problem persists, it is necessary to check whether the ground foundation is cracked. After excluding external factors, abnormal noise and instability are likely to point to internal damage to the platform body (such as cracks, severe deformation). At this time, it is necessary to contact the manufacturer or professional organization for flaw detection and precision testing, and it is strictly prohibited to use it with defects.