Passenger elevator safety is the first concern has been that when the operation of the elevator which can seal the floor lifting exports reached safety purposes. Secondly, the passenger elevator also includes electrical control systems and electric drive systems, electric drive system is the main function is to provide power, so that the speed of the elevator by some control to achieve a safe and stable condition, lift the electric drive system mainly by the power supply system, the speed of feedback components, traction motors and motor speed control configuration composed of open-air passenger elevators have also enclosed passenger elevator installation, open-air passenger elevators tend to be more welcomed by the customers, but also with respect to other types of elevators much safer. AC elevator passenger elevator Category: AC induction motor as the driving force of the elevator. According dragging exchange can be divided into single-speed, two-speed AC, AC voltage control, AC transformer frequency control. DC Lift: DC motor as the driving force of the elevator. Such elevator rated speed is generally 2.00m / s or more. Hydraulic lift: general use electric pumps driven fluid flow, plunger lift the car elevator. Rack and pinion lift: rail processed into rack mounted gear meshing with the rack on the car, the motor drive gear rotates the car elevator lift. Screw Lift: The plunger lift straight top-processed into a rectangular thread passenger elevators offer, then a large nut with thrust bearings mounted on top of the cylinder, then rotate the nut driven by motor through reducer (or belt), so that Screw jacking the car up or down the elevator. Linear motor driven elevator, its power source is a linear motor. Elevator come early, have used the steam engine, the internal combustion engine as the power to directly drive the elevator, now largely extinct. Motor through reducer passenger elevator manufacturers, Yangxin passenger elevator, the elevator is provided by the Texas Noah Noah Wit Wit Elevator Company. Texas Noah Witt Elevator Co. (www.dznywt.com) strong, credible, in Dezhou machinery and industrial products industry cooperation projects accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Noah Witt elevator and you hand into the brilliant, for a better future!