There are several categories of elevator safety protection measures. Let's take a look at it with Xiaobian!
1. Broken chain protection measures: The lifting chain is a double chain, and one of them will not be dangerous if broken; and it has exercise protection wire rope. When the chain breaks due to unexpected conditions, the wire rope will continue to bear the load and force, which will double the insurance effect .
2. Overload protection measures: The hydraulic station is equipped with a safety valve relief valve. When the overflow pressure is adjusted to the pressure at a large load, if the overload occurs, the relief valve will open, and the lift will not rise; only after the load is removed, the relief valve will close and the lift will rise; this can Effectively avoid the damage to the main structure and main components of the elevator due to overloading. If the cargo and the hoistway are stuck due to operating errors during the ascent process, the overflow valve will also open automatically, which can avoid damage to the elevator and main components caused by operating errors and protect the safe use of the elevator.
3. Power failure emergency measures: The hydraulic station is equipped with a manual unloading valve. When the power is suddenly cut off, you can open the unloading valve by hand to make the main table fall from the middle position to the ground.
4. Door-machine linkage function: only when the main table is lifted to which floor can the door on that floor be opened; if the main table is not on this floor, the door to the next floor will not open. This can avoid accidents caused by personnel entering the hoistway by mistake.
5. Perimeter fence: There are protective fences around the elevator. Prevent accidents that may occur when someone enters the hoistway below the platform during the operation of the elevator.
6. Install explosion-proof crack valve: Install the explosion-proof crack valve at the oil port of the hydraulic cylinder. When the oil pipe is aged or accidentally broken, the oil in the hydraulic cylinder will not flow out instantly, but at a certain speed; so the piston cylinder will not Suddenly retracted, the main table will fall relatively smoothly, and will not cause unnecessary damage to the goods.
7. Operation alarm function: There is a siren (or sirens) installed next to the electric control box. When the elevator is returned, the sirens (or sirens) will automatically turn on; it can warn unrelated personnel to operate at will to ensure the normal use of the elevator And effectively avoid accidents caused by personnel entering the hoistway by mistake.