Abstract: The present invention relates to the technical field of video surveillance, in particular to a video surveillance device capable of multi-angle monitoring. The video surveillance device comprises a fixing mechanism, an angle adjustment mechanism, a monitoring case, a rotating rod, a monitoring camera, a mounting mechanism, a driving mechanism, a cleaning mechanism, and a blowing mechanism, where the fixing mechanism comprises a support leg and a column. The present invention can adjust the monitoring angle of the monitoring case and clean the monitoring camera, and the driving mechanism drives the cleaning mechanism to move back and forth and drives the blowing mechanism to blow air.

Abstract: The present invention relates to the technical field of arc protection garments, in particular to an arc protection garment. The arc protection garment comprises: an arc protection garment body; a detachable fixed component comprising a fixed frame, a limit frame, an elastic member connection groove, and an opening; a protective plate; and a limit component comprising a movable frame and a sliding rack. The fixed plate is pulled to drive the sliding rack to move down, a limit rod descends and separates from a connection hook, and the protective plate can be quickly removed without turning over an injured person for emergency handling.

Abstract: Disclosed is a harmful gas detection device, comprising a hand-held mechanism, a detection mechanism, and an external mechanism, where the detection mechanism comprises a connecting cylinder, a detector body, and interference components; and the external mechanism comprises a wheel body, an external sleeve, and a rotating component. The detection mechanism can be placed in front of a staff by the hand-held mechanism, and the detection mechanism can introduce air from different positions on an advancing road into the detector body during movement. The wheel body can increase the load capacity, which can better improve the battery storage capacity.

Abstract: The present invention relates to the technical field of arc protection garments, in particular to an arc protection garment. The arc protection garment comprises: an arc protection garment body; a detachable fixed component comprising a fixed frame, a limit frame, an elastic member connection groove, and an opening; a protective plate; and a limit component comprising a movable frame and a sliding rack. The fixed plate is pulled to drive the sliding rack to move down, a limit rod descends and separates from a connection hook, and the protective plate can be quickly removed without turning over an injured person for emergency handling.