The main structure and working principle of conveyor travelator moving walkway
Conveyor travelator moving walkway can be seen everywhere in large shopping malls, complexes, supermarkets, subway station entrances, high-speed rail station entrances, etc. It has become an essential tool for our daily travel. The following we will understand and analyze the conveyor travelator moving walkway from a professional point of view.
I. Professional vocabulary
1、conveyor travelator moving walkway: a fixed electrically driven device with circulating rungs for transporting passengers in an upward or downward inclination.
2、Truss: Metal structural members erected on the building structure to support the stairs, treads, tapes and running mechanism and other components.
3、Step: The part of escalator truss that runs in a circular motion for passengers to stand on.
4、Sprite plate: Located at the entrance and exit of the running stairs or treads, it is a part that engages with the stairs or treads for the convenience of passengers to go up and down.
5, handrail device: escalator or moving walkway on both sides, for passengers to play a role in safety protection, but also convenient for passengers to stand and hold the parts.
6、Wall guard plate: below the handrail belt, loading the decorative guard plate between the inner cover and outer cover.
7、Apron plate: metal apron plate adjacent to both sides of the stairs, treads or tape.
8、Inner cover plate: Inside the apron plate, the metal plate connecting the apron plate with the apron plate.
9、Outside cover plate: On the outside of the escutcheon plate, above the outer decoration, the metal plate connecting the decoration plate and the escutcheon plate.
10、Drive host: The device that drives the operation of escalator or moving walkway.
11、Floor plate: The metal plate set at the entrance and exit of the escalator's escalator and connected with the comb plate.
12、Handrail belt: located on the top surface of the handrail device, running synchronously with the stairs, treads or tape, for passengers to hold the belt-shaped parts.
13、Outer decorative plate: from the outer cover, the escalator or moving walkway will be closed up the closed up decorative plate.
14、Middle support: The support set at the bottom of the truss between the two supports of the escalator.
15、Automated walkway: A fixed electric device with a circular running walkway for conveying passengers at an angle of not more than 12° horizontally or inclined.
16、Automated walkway tread: A board-like part with circular running on the automatic walkway truss for passengers to stand on.
17、Tightening: ladder way tightening, handrail belt tightening, active chain tightening.
18、Tilt angle: the maximum angle between the running direction of the stairs, treads or tapes and the horizontal surface - ≤35 ° ≤12 °.
19、Lifting height: the vertical distance between the two floors of escalator or moving walkway import and export.
20, for escalators and moving walkways set a theoretical width value. Generally refers to the length of the tread measured horizontally after the installation of escalator or moving sidewalk tread.
21、Rated speed: the speed specified in the design of escalator or moving walkway (≤0.75m/s).
Second, the principle of conveyingor travelator moving walkway is introduced
1、Handrail entrance protection device: The entrance of the escalator is equipped with an entrance protection device at the entrance of the handrail at the top and bottom of the escalator. When an object is caught in the middle of the handrail belt and the rubber protection device, it will make the contactor move and stop the escalator.
2, Comb plate protection: If a foreign object is caught between the moving steps and the stationary comb plate, the comb plate will be lifted so that the contactor will act and the escalator will stop automatically.
3、Apron plate extrusion protection: When a foreign object is caught in the gap between the ladder and the apron plate and causes a certain amount of deformation of the apron plate, the safety switch will be triggered.
4、Ladder chain loosening and breaking protection: When the ladder chain breaks or is excessively elongated, the tensioning device will back off under the counteraction of the compression spring, thus making the contact switch act. When the contact switch acts, it will lock itself, so it needs to reset manually.
5、Ladder collapse and roller rupture protection: When the ladder or roller breaks or collapses due to rupture, the contactor will act and the escalator will stop.
6、Overspeed protection: when the host running speed exceeds the set limit speed, the sensor will send the signal to the control system and the escalator will stop.
7、Ladder loss protection: When there are steps lost or missing, the sensor switch will detect the signal and transmit to the control board, the escalator will stop and cannot start running. The lost step switch is installed in the upper and lower head.
8、Front board open detection: In order to facilitate the maintenance and repair of the escalator, the escalator is equipped with overhaul operation function. All the safety switches of the escalator in the maintenance state work as well as in normal operation.
9、Main circuit break switch: When there is short circuit or grounding in the equipment power supply voltage, the main circuit break switch will cut off the external power supply in time to protect the equipment safety.
10、Motor overload and overheating protection: When the host current exceeds the set current, the escalator will stop running automatically. When the temperature of the host exceeds the set temperature, the escalator will be protected from stopping due to the overheating of the host. The overheat protection switch is located in the motor coil.
11、Additional safety brake: It operates before the speed exceeds 1.4 times of the rated speed or when the steps, treads or tapes change their specified running direction.
12、Traffic flow light: at the entrance of the upper and lower level handrails of the conveyor travelator moving walkway, there is a running direction light to indicate the running direction of the whole ladder.