Key Points for Installation and Alignment of the Kiln Large Gear Ring: (1) Before installing and aligning the kiln large gear ring, the centerline of the cylinder at the riveted spring plate must be adjusted to the correct position. (2) During the installation and alignment of the kiln large gear ring, the pre-installation is a critical step. It must be done with high quality, standards, and strict requirements. The alignment during the installation process is merely "centering" and cannot correct the gear ring. The pre-installed large gear ring must be lifted and installed as a whole; otherwise, it will be difficult to install and tighten the pins and bolts at the gear ring mating points, and it cannot guarantee the gear spacing error and the gear ring roundness tolerance. (4) The spring plate and cylinder must fit tightly in a free state without forcing them to be fixed or riveted together. Otherwise, after releasing the helical cap and wire, the radial and face跳动 of the kiln large gear ring will increase or exceed the tolerance due to the spring plate. (5) The radial and face跳动 values during precise alignment must be less than the standard values. After removing the helical cap and wire, the radial and face跳动 of the kiln large gear ring may increase, but the difference will not exceed the tolerance. (6) When drilling the spring plate and cylinder, follow the sequence in the drawing, and tighten one locating bolt for each hole drilled. (7) After the kiln is returned to production operation for 12-24 hours following major repairs, stop the kiln to check the rivet condition of the spring plate and re-tighten the kiln large gear ring mating screws.