The reason why it is necessary to dig a pit before installing an elevator is that the purpose of the pit is to prevent safety hazards caused by the elevator falling.
The elevator safety devices installed under the pit include buffers, sheave devices (which are linked to the speed limiter), and some elevator speed switches.
1. The rated speed of the elevator is related to the depth of the pit. The depth of the elevator pit is usually determined by the elevator speed and tonnage. The greater the speed and tonnage, the greater the depth. For example, the rated speed of a traditional elevator is 1 meter/second, and the depth of the pit generally requires about 1.5 meters.
2. When digging the depth of the elevator pit, the civil construction work of the pit needs to be done according to the dimensions given by the elevator company, because from a civil construction perspective, the bottom of the elevator pit is cushion and low-grade , there are hidden dangers of groundwater infiltration and surface water seepage pits, so the elevator pit must have civil engineering and waterproofing engineering.
3. Water seepage in the elevator pit is one of the more common problems in elevator maintenance. Once water accumulates in the elevator pit for a long time, the emergency stop switch in the pit will be insensitive, causing safety hazards. Screw type villa elevator. The bottom pit only needs 5-7mm. The special structure prevents the screw elevator from losing weight, and the requirements for the top floor are also relatively low.