Elevator heart part: controller
Elevator controller main components are: control panel or controller, transformers, bridge pile and capacitance, air switch or fuse, relay and contactor, drive, power cables, signal lines, terminals or connectors and other components.
More than 70 per cent of elevator accidents occur on door system. Why we say that? Anyone who knows the structure of elevator knows that it would be like a trap in front of your feet. There is a risk of shearing, squeezing, and hanging from the inside. So, when you take the elevator, you must see it clearly and then step back, wait for the elevator stop, and then leave the door open.Continue reading
How long does the elevator service life?
Every elevator part is very important. Any failure of an elevator part will cause an elevator accident. Therefore, it is very important to ensure the safety of the elevator.
(1) The defects of the motor will affect the safe operation of the whole drive system, and it is easy to have an unsafe impact on passengers.
(2) Severe wear or peeling of the gear (worm gear pair) will cause the elevator to run out of control due to the failure of the transmission, which may cause damage to the personnel.
(3) The brake, brake springs, brake arm, failure will cause brake failure, cause the car run out of control, thus, header, Dun bottom accident caused casualties and severe damage to equipment.
(4) The severe wear and hardness difference between the grooves and the grooves of the traction wheel will reduce the traction of the elevator, which can cause the elevator to run out of control and cause damage to passengers.
(5) The failure of the anti-rope wheel, the rewinding wheel and the guide wheel can easily cause the elevator to run out of control and cause damage to the passengers.
(6) The defects of the steel wire rope and the rope head are easy to cause the steel wire rope to break or slip, the cage fall, and cause the damage of equipment and buildings, and the serious accident of casualties.Continue reading
1. Cascade failure
The stairway is a standing place for passengers to take a ladder and a continuous running part. Due to environmental conditions, human factors, such as the object itself causes, cascade failure mainly has the following aspects: tooth broken, pedal stent fracture spindle hole, stent fracture, the main wheel come unglued.
2. Failure of the drag chain.
Drag chain is one of the largest stress escalator parts, due to the long running, accordingly more serious wear and tear, and the main fault include lubrication system fault, drag chain serious wear and tear, drag chain elongation.
3. Failure of the driving device.
The main fault of the driving device includes the abnormal sound of the driving device, the temperature rise of the driving device is too fast and too high. The reasons for failure of the driving device are as follows:Continue reading
The machine room-less (MRL) elevator is relative to the machine room (MR) elevator, which is using modern production technology to miniaturize the equipment of machine room as far as possible while maintaining the original performance, move the control cabinets, traction machine, governor, and other parts to top or sides of elevator hoistway, thus the traditional machine room was cancelled, in order to meet the customer’s special requirements for height and roof.
The maintenance is a key role in the normal operation of elevator and escalator. How to maintain elevator and escalator? Please continue to view:
1. Look – Every day, before escalator and elevator running, to look around for abnormalities.
2. Listen – Every day, before escalator and elevator running, to hear if there is an abnormal sound.Continue reading
