This book is comprehensive, systematic introduction to the escalators and moving walkways general working principle, classification methods, basic structure, parameters and performance indicators, the main components of the structure and the basic technical requirements. And in accordance with the actual market situation, domestic and international standards and documents, Yangxin County escalator, the escalator is divided into ordinary type, type of public transportation, heavy-duty three species to be described in detail. The book also describes some of the appropriate design and calculation methods. Fit in escalator manufacturing, engineering, inspection, service, construction projects and electromechanical institute personnel to read. Is one pair of escalator technology can get started, it can be used to improve the professionalism of the books. The lubrication system is automatic timing, pointing directly to the lubricating oil sprayed onto the chain pins so that it get a good lubrication. Start time lubrication system pump or solenoid valve to the oil by the time delay relay in the control cabinet control (PC control by PC internal time relay control). (13) The safety devices: escalator is an important tool for public transportation, escalator service, security is paramount. With the application of the PC, automatic fault alarm, automatic display, automatic fault analysis can be achieved. According to (EN) regulations escalator safety standards, escalators must have. Yangxin County, elevators and escalators _ _ Noah Witt escalators investment provided by the Texas Noah Witt Elevator Company. Yangxin County, elevators and escalators _ _ Noah Witt escalator Merchants Texas Noah Witt Elevator Co. (www.dznywt.com) (www.dznywt.com) this year introduced a new upgrade, the above picture is only for reference, please call the contact phone book page or image on to obtain the latest information, contact: Jingli.