there are also individual details on the elevator
made a few minor corrections, as follows:
web comment: very good video, as an elevator industry practitioner, basically found no errors. in the spirit of the whale, i picked the following small flaws.
the card slot at 0:54 is called the guide shoe. here the guide shoes are sliding guide shoes, and the high-speed elevator uses rolling guide shoes.
at 1:48 of the video, the requirements for the elevator wire rope strength gb7588 elevator manufacturing and installation safety requirements given in 9.2.2 are: three or more safety factors are 12; two safety factors are 16 (see the standard for the definition of safety factors)
now the former quality and technical supervision bureau has been merged into the market supervision administration.
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