What is the principle that escalators only start when people taken?

Due to the lack of energy and power resources, the operation of escalators under no-load condition has become a huge waste. Therefore, we envisage that if the escalator can be automatically detected to be empty for a period of time, the escalator will be instructed to slow down from full speed to half speed. In the relatively infrequent places where people come in and out, based on the above ideas, after the escalator detects the no-load status for a period of time, it will slow down gradually from full speed to stop operation, so as to save about 30% ~ 50% of electricity. When a passenger steps on the bed cover of an escalator, the escalator can start running at full speed by automatically sensing the arrival of the passenger through a photoelectric sensor set at the entrance of the escalator cover.

What is the principle that escalators only start when people taken?

What is the principle that escalators only start when people taken?

Working principle:

 

  1. The core parts of the escalator are two chains, which rotate around two pairs of gears. At the top of the escalator, an electric motor drives the transmission gear to rotate the chain ring. A typical escalator USES a 100 horsepower engine to turn the gears. The engine and chain systems are mounted in trusses, which are metal structures that extend from floor to floor.
  2. Unlike the conveyor belt moving a plane, the chain ring moves a set of steps. The most interesting thing about escalators is the way they move. The steps remain level as the chain moves. At the top and bottom of the escalator, the steps fold into a platform. This makes it easier to get up and down the escalator.
  3. Each step of the escalator has two sets of wheels, which rotate along two separate tracks. The top gear (wheels near the top of the steps) is connected to a rotating chain and is pulled by a drive gear located at the top of the escalator. The other wheels simply slide along the track behind the first wheels.
  4. The two tracks are separated from each other, so that each step can be kept level. At the top and bottom of the escalator, the track is in a horizontal position, flattening the steps. There are a series of grooves inside each step to connect the front and rear steps during the leveling process.
  5. Besides rotating the main link, the motor in the escalator can also move the handrails. The armrest is just a rubber conveyor belt that circulates around a series of wheels. The conveyor belt is precisely configured to move at exactly the same speed as the steps, making the rider feel smooth.
  6. The escalator system is not capable of lifting people up dozens of floors as elevators do, but it is suitable for providing short distance transportation. This is because of the high load rate of escalators. When the elevator is full, no one else can get on until it reaches the designated floor and returns. On escalators, as long as one person reaches the top, it makes room for others.

What is the reason for the deviation of escalator steps?

What is the reason for the deviation of escalator steps?

 

The escalator consists of steps traction chains, step guide rail system, drive device, tension device, and handrail device and metal structure. The structure includes: steps, kick plate, bracket and auxiliary wheel. Escalator is continuous work, therefore, in the stream of people concentrated in public places, shops, railway stations, airports, docks, the place such as buildings and underground railway station, to transport a large number of people in a shorter time, using the escalator has more advantageous than using intermittent working elevator.

The steps are integral and modular. The integral die casting is made of aluminum alloy with high precision, light weight and high processing speed. The modular echelon is composed of steps, kicking plate, supporting frame and other parts, with large weight and poor precision. It is a product of small die-casting capacity and is gradually replaced by integral echelon.

The steps move horizontally at the passenger entrance (for passengers to get on the stairs) and gradually form the steps. The steps fade away near the exit and the steps move horizontally again. These movements are realized by the steps of the main wheel and the auxiliary wheel respectively walking along different steps of the guide way.

Under the escalator room has two springs, is for adjusting the escalator cascade running deviation device, if can’t adjust well, that’s different cascade big chain long, need to change the big chains.

The escalator is generally inclined. A pedestrian standing on one end of an escalator will be automatically taken to the other end of the escalator and the steps will remain level all the way. Escalator step has with cascade synchronous moving in on both sides armrest, fu grip for users. Escalators can always walk in one direction, but most can be controlled by managers according to the needs of time, people and so on. Another type of pedestrian conveyance similar to escalators is the automatic walkway. The main difference between the two is that there are no steps on the automatic pedestrian path. Most only walk on the flat ground, or lean slightly.

The escalator consists of a stairway (variable plate conveyor) and an arm rest (deformed belt conveyor) on both sides. Its main components are cascade, traction chain and sprocket, guide rail system, the main drive system (including motor, speed reducer, brake, and the middle transmission links, etc.) drives main shaft, step and tension device, skeleton, comb plate, escalator handrail system and electrical system, etc. The staircase gradually forms a staircase after horizontal movement towards the passenger entrance (facilitating passengers to ascend the stairs). The steps close to the entrance gradually disappear and the steps move horizontally again. These movements are realized by the steps of the main wheel and the auxiliary wheel respectively walking along different steps of the guide way.