Control unit with preset lifting height and automatic stop fitted at the left pillar.
控制单元设有预设的举升高度，左柱上安装有自动挡块。
2
Each supporting rod on the jack can cease climb at preset elevation and the slip-form supported by the jack adjusts to be horizontal if the limit stop on each supporting rod is at the same elevation.
The pole terminal matching with the radius of a leakage container is utilized to stop the leak, and a gap between the pole terminal and the leakage container is controlled in a preset range.