Abstract: Disclosed is a detection device for a working surface. The detection device (100) comprises: a plurality of hydraulic supports (101), a laser ranging set (102), a displacement sensor (103), a hydroelectric signal conversion module (104), and a support controller (105) which are disposed on a working surface. The laser ranging set (102) is disposed below a top beam of a first target hydraulic support among the plurality of hydraulic supports and parallel to a post of the first target hydraulic support, and is configured to determine error length and send the error length to the hydroelectric signal conversion module (104). The displacement sensor (103) is configured to at least obtain the degrees of inclination of the hydraulic supports (101) and send the degrees of inclination to the hydroelectric signal conversion module (104).

Abstract: The disclosure relates to an evaporating assembly and a humidifier. The evaporating assembly includes a fixing shaft and at least two evaporating bodies. Each of the evaporating bodies is provided with a mounting hole and at least one group of limiting portions, wherein each of the evaporating bodies is detachably mounted on to the fixing shaft via the mounting hole, and the limiting portions on every two of the evaporating bodies that are adjacent to each other are abuttingly mated so that a first gap is formed between every two of the adjacent evaporating bodies.

Abstract: The disclosure relates to an evaporating assembly and a humidifier. The evaporating assembly includes a fixing shaft and at least two evaporating bodies. Each of the evaporating bodies is provided with a mounting hole and at least one group of limiting portions, wherein each of the evaporating bodies is detachably mounted on to the fixing shaft via the mounting hole, and the limiting portions on every two of the evaporating bodies that are adjacent to each other are abuttingly mated so that a first gap is formed between every two of the adjacent evaporating bodies.