3results about How to "Fast maintenance" patented technology

This invention relates to the field of centrifugal fans, specifically disclosing a portable energy-saving electric fan and its usage method. The fan includes a housing with a grille and a fan installed inside the housing. The fan's outlet is aligned with the grille. The top of the housing has an opening through which the fan can extend. The fan's outer casing is divided into a fixed part and at least one movable part. The movable part is movable relative to the fixed part. When the movable and fixed parts are separated, maintenance tools can be inserted into the casing to inspect the inner wall and impeller. This invention allows the fan to be lifted from the housing for easy maintenance. Furthermore, the fan's outer casing can be divided into a fixed part and at least one movable part, and the fixed and movable parts can be fixed to the fixed part without connecting parts, only by a retaining element inside the housing, facilitating maintenance and return to its original position after maintenance.

A silicon wafer top tooth structure and substrate carrying device for an aluminum boat are disclosed, relating to the field of semiconductor transport vehicle technology. The silicon wafer top tooth structure for an aluminum boat includes: a main tooth base, which is an integrally formed structure comprising a base portion and a main tooth portion extending upward from the base portion, with a positioning platform at the top of the base portion; a secondary tooth body, detachably connected to one side of the main tooth base via countersunk fasteners; a clamping gap for holding the silicon wafer is formed between the secondary tooth body, the positioning platform, and the main tooth portion; the secondary tooth body has at least two conical first countersunk holes, and at least two conical second countersunk holes are correspondingly formed on the opposite side of the main tooth portion; the countersunk fasteners penetrate through the first and second countersunk holes, and the two sides of the countersunk fasteners are coplanar with the outer surfaces of the secondary tooth body and the main tooth base. This utility model enables rapid replacement of partially damaged components, avoiding the scrapping of the entire component due to partial damage in traditional integral top teeth, and significantly reducing replacement costs.

The invention belongs to the technical field of rail transit, and particularly relates to an LED signal machine based on rail transit and an assembly thereof, comprising a signal lamp body, a column, a mounting assembly and a filtering assembly; the light filtering assembly comprises a mounting plate and a light filtering seat fixedly mounted on the mounting plate, a light filter lens is mounted on the surface of the light filtering seat, and an annular seat connected with the mounting hole in a matched manner is arranged on the light filtering seat; an annular shell is fixedly connected to the signal lamp body, an airflow channel is formed in the light filtering base, an air guide pipe matched with an air outlet of the airflow channel is fixedly connected to the outer wall of the annular shell, and a plurality of air outlet holes are formed in the surface of the annular base. The light filtering assembly is detachably connected with the signal lamp body through the mounting plate, the locking frame and other structures, directional flow can be formed by natural wind or forced airflow through the airflow channel arranged in the light filtering base, the wind scooper and the wind guide pipe arranged on the annular shell, and the light filtering assembly has the advantages of being efficient in heat dissipation, automatic in cleaning and convenient and fast to maintain.