4. Top level height: The net size between the finished floor of the top floor and the lower skin of the top of the shaft.
5. Pit depth: The lowest level of the finished floor to the bottom of the pit. Pay attention to whether there are structures such as building foundations in the pit that protrude into the hoistway. If any, the size must be measured and recorded.
6. Shaft wall structure: Brick-concrete structure shafts must be inspected with or without ring beams. If there is a need to record the center spacing of the ring beams (generally, the height of the ring beams is 300mm, the minimum is 200mm). If there are buried parts, the size and spacing of the embedded parts should be recorded. In many cases, if the hoist is not designed according to the manufacturer's drawings you represent, the position of the embedded parts will be deviated. The rear counterweight elevator shaft must be equipped with three beams (or embedded parts), and the side counterweight elevator shafts only need to be clothed (or embedded) on both sides. Also pay attention to the four corners of the hoistway, whether there is a column inside the hoistway, whether there is a protruding beam on the inner wall of the hoistway, and make a record. The position of the embedded part is determined by the elevator manufacturer according to the position where the rail bracket and the hoistway wall are welded and fixed, and the embedded part is generally made of 12-16 mm thick steel plate.
7. Machine room: measure the plane length and width of the machine room, mark the relative position of the machine room and the hoistway, the height of the starting (if any), the height between the lower edge of the hook to the top plate of the hoistway, the position and size of the door opening of the machine room, etc. It is necessary to record the presence or absence of a support table. Whether the machine room has a high platform and its height determines the length of the machine room box when the factory is shipped, and the configuration of the emergency stop switch. Also note the distance between the machine beam support tables (generally equal to the width or depth of the hoistway) to avoid shorting the machine beam when the factory is shipped.
