马路少不了泄水槽，泄水槽上必然有水泥盖板。
There must be a drain on the road. There must be a cement cover on the drain.
过去清理泄水槽淤泥等垃圾，需要用钎子等工具撬起盖板，再用人工掀起搬走，费时费力，还常因撬、掀、搬等环节，水泥盖板因受力不均容易损坏，且挤手、砸脚现象常有发生。
In the past, to clean up the sludge and other garbage in the drain tank, it was necessary to pry up the cover plate with tools such as a drill, and then lift it manually to remove it, which was time-consuming and laborious. Due to prying, lifting, moving and other links, the cement cover plate was easy to be damaged due to uneven stress, and the phenomenon of squeezing hands and smashing feet often occurred.