A safety mechanism for a multi-stage negative pressure machine
By installing a safety mechanism on the multi-layer negative pressure machine, and utilizing the design of a rotating frame and support columns, the safety hazard of the top cover falling off is solved, thus protecting the staff and improving the durability of the equipment.
CN224454303UActive Publication Date: 2026-07-03临海市红鹏机械有限公司
Patent Information
- Application Number
- CN202521675047.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-08-07
Smart Images

Figure CN224454303U_ABST
Abstract
This utility model discloses a safety mechanism for a multi-layer negative pressure machine, including a base, a rotating frame, and a drive source. One end of the rotating frame is rotatably connected to the base, and the other end of the rotating frame is fixedly provided with a support column. The drive source drives the rotating frame to rotate. The rotation axis of the rotating frame and the support column are both vertically arranged. This safety mechanism is installed on the frame of the negative pressure machine. After the top cover is raised, the drive source drives the rotating frame to rotate, so that the support column is located between the top cover and the platform. In this way, when the staff operates on the internal wall panels, even if the top cover accidentally falls or other personnel misoperate, the support column can support the top cover and the platform, which provides good protection for the staff's hands and effectively prevents safety accidents caused by the accidental fall of the top cover, thus improving the safety of the negative pressure machine.
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Citation Information
Patent Citations
A wall panel lifting and layering mechanism
CN108163753B