advertisement

Group Info

Escalator Supplier An escalator is a moving staircase

Escalator Supplier An escalator is a moving staircase

Two types of companies supply  Escalator Manufacturer. Primary manufacturers build the equipment, while secondary suppliers design and install the equipment. In most cases, the secondary suppliers receive the equipment from the manufacturer and make the necessary changes.

1 The first stage of escalator construction is to establish the design, as described above. The manufacturer uses this design information to construct the customized equipment. The tracks, step chains, stair assembly, and motorized gears and pulleys are all bolted into place on the truss. The handrails are carefully coiled (wound into a loop) and packed. All the equipment is then shipped to the supplier.

2 Before installation, the top and bottom landing areas are prepared for connection to the escalator. Concrete fittings are poured, and the steel framework that will hold the truss in place is attached.

3 After the escalator arrives at the site, it is jockeyed into position between the top and bottom landing holes. Several methods are used to lift the truss into place. One method uses a scissors-lift apparatus mounted on a wheeled support platform. The scissors lift is outfitted with a locator assembly to help in vertical and angular alignment of the escalator. The upper end of the truss is first aligned with the support wall at the upper landing and then placed on this support wall. The lower end of the truss is put into a pit on the floor of the lower landing. If the handrails come separately, they are connected to the appropriate chains after the escalator is installed.

4 The escalator is connected to the power source, and the tracks and chains are checked for proper alignment.

5 Final checks are then performed to ensure that motorized parts are functioning properly, the belts and chains are moving smoothly and at the correct speed, and the emergency braking system is activated. The step treads must be far enough apart so that they do not rub against one another. However, they should be positioned in such a way that no large gaps are present. Such gaps could be a source of injury.

The Code of Federal Regulations (CFR) contains guidelines for escalator quality control and establishes minimum inspection standards. Standard 29CFR1917.116 states, "Elevators and escalators shall be thoroughly inspected at intervals not exceeding one year. Additional monthly inspections for satisfactory operation shall be conducted by designated persons." The government further requires records of annual inspections to be posted near the escalator or to be available at the site. The escalator's maximum load limit also has to be posted and not exceeded.

All escalators in the United States that are manufactured and installed comply with the safety code set by the American National Standards Institutes and published by the American Society of Mechanical Engineers (ASME). The ASME A17.1 Code requires the regular inspection of escalators by specially trained and qualified inspectors. These inspectors are usually employees of a state office. In addition, escalator owners generally contract with escalator maintenance companies to conduct regular maintenance. However, escalator accidents continue to occur due to poorly maintained equipment. Some of the more severe accidents involve entrapments, in which a rider's clothing or shoe gets caught between the step and the comb plate.

The escalator industry continues to develop products that meet the changing needs of the marketplace. Some of the newly developed designs include an escalator that can transport wheelchairs and a spiral escalator that increases usable spaces by its installation in the corners or at the sides of large rooms. A new design is the high-rise escalator that can go up to over 100 feet and is being installed in underground train and bus stations, as well as in airports and convention centers.

Escalator Supplier An escalator is a moving staircase—a conveyor transport device for carrying people between floors of a building. Escalators have the capacity to move large numbers of people, and they can be placed in the same physical space as one might install a staircase. A non-functioning escalator can function as a normal staircase, whereas many other conveyances become useless when they break down.

 

Users

Newsfeed

advertisement

Advertisement

advertisement