Elevator Door Safety Devices

The so called 3 x 5 rule for elevator landings is an important section in the safety governing code for home elevators asme a17 1 part 5 3 private residence.

Elevator door safety devices.

Door sensors sometimes known as photoelectric or infrared beam electric safety door edges door detector electric proximity edges or electric doorman is an elevator device that detects a passenger or an object on the doorway which prevents the doors from closing usually installed for accessibility. An elevator safety string. It continuously scans for interrupted beams and will reopen the elevator doors instantly if one is found. An elevator system encoder.

The following list describes all the safety components used in electrical traction elevator safety system. Three inches is the maximum distance permitted between the backside of the closed hoistway door at the elevator landing and the edge of the threshold at that floor landing. Overspeed governor tension device and rope loop are no longer needed and more shaft space can be used for the car. 1 device for locking landing doors hoistway door interlock.

The committee s investigation of elevator door safeties was prompted by a proposed new ordinance that would require all elevators in baltimore to be equipped with a device which is supposed to hold the elevator at the door until the door leading into the elevator shaft is shut and securely fastened 3 the association claimed that to. Device for locking landing doors hoistway door interlock. Optiguard door protection device the optiguard door protection system aaa24591am2 unitec uses 154 infrared emitters and detectors to creat an invisible safety net across the elevator entrance. This device is installed on cabin near the elevator motor basically it runs through the complete shaft with the guidance on ropes.

Safety gear wittur esg is a breakthrough safety system solution for new elevator installations. As the name suggests this dev. The elevator safety device of claim 1 wherein the safety condition whose detection results in actuation of the one or more braking assemblies comprises one or more of the following conditions. If a person or an object blocks the doorway and the sensors detects the person or object.