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What is the safety contact of the elevator? Where is the safety contact? What is the use? How does it work More
Safe circuit, the normal state is through. All the places involving safety will have a contact, the engine room, the pit, the car door, each elevator door, all contacts in series together, any point off, the elevator can not move
What are the embedded parts in the elevator shaft?
Most of the embedded parts made of metal, such as: steel or cast iron, wood, plastic and other non-metallic rigid materials. The prefabricated part (prefabricated part) is a pre-installed (buried) component in the concealed project, that is, the structure of the structure when the structure is placed, for the masonry when the superstructure of the lap. To facilitate the installation of external engineering equipment base fixed.
Just signed 500 shares happy elevator, the first time, is expected to earn much money?
One thousand large pieces
How to measure the safety dimensions of the elevator
Find GB7588 to see to know, very detailed
Inside the elevator inside the number of buttons "1" below a letter "B", what does that mean? Question added: "B" is optional? More
Should be negative layer! See how people arrange, parking, shops. Upstairs is a few A to a few, generally downstairs on a layer of B1B2 slightly
How to calculate the size of the elevator door how to calculate the area
Long by the width of the area, or the amount of length,
There is no exhaust fan in the elevator
There is a fan, but did not open it Although there is ventilation, but the circulation will be relatively poor, slightly stuffy, can not be said to be hypoxia, and then meet the low blood sugar, fainted
On the elevator frame advertising, who can specifically talk about it?
LCD screen surface with plexiglass protection, select the silver, black aluminum shell video, picture 90 degrees rotating playback. Support high-definition picture display using the US ESS program, support JEPG, MP3, MP4, WMA, MPEG1 / MPEG2 / MPEG4 , AVI file format and compatible with VCD, SVCD, DVD support picture mode, music mode, video mode, mixed mode (picture + music), timely information word spots mode, loop video file mode, fixed-point file playback mode and synchronous playback mode. Support the storage mode: can choose 20G, 40G, 60G, 80G and other hard disk storage with 2.0USB interface, or CF, SM, SD, MMC, MS, MS and other memory card Super switch timing function, can support four sets of remote control timer switch Machine operation. OSD in the English language menu, simple operation, dedicated remote control, remote control to adjust the color, brightness, contrast, display interface machine with two security lock, the system boot password lock, support for intelligent file file security system. More services, such as hotels, airports, stations, post offices, banks, hospitals, 4S shops, exhibitions and other places are mainly targeted for strong!