The Floor Spring Is a Hydraulic Type Door Closer

The Floor Spring is a hydraulic type door closer, just its pressure spring device are worm gear instead of pinion and rack. The worm gear can be forward and reverse rotate, so the floor spring can be used to duplexing opening door and the door closer only can be applied to single-track opening door. The technology key of the floor spring is the load-bearing of the spindle bottom, it decide the bearing class of the floor spring. Compare to door closer, the decisive role for choosing floor spring is glass door weight. As floor spring use to duplexing opening door need to bears the door weight in practical applications, door weight is usually will not surpass, therefore, door width and wind pressure is the first factor in choosing floor spring. Moreover, also need to pay attention to aspect ratio that means the proportion of height and width. Otherwise, the door doesn't work if out of proportion. From the manufacture angle, the compression extent in the spring of worm gear structure on the floor spring is smaller than the pinion and rack transmission of the door closer; the floor spring quality are higher dependence of design and machining precision for a short arms of floor hinge. In addition, the door leaf plane of duplexing opening door have a very large applied force on the floor spring, so there will have very large gap on the life between low quality floor spring and high quality floor spring. To the basic configuration is the axis and the earth's axis (or called foot). Celestial axis is the role to connections the frame and door leaf in the upper. It is compose by a axis which can be adjustive by screw bolt to fixed on the door leaf and a axis bush which fixed on the door leaf. celestial Axis and earth's axis can apply to almost all the wood, aluminium, steel door and frameless glass doors with glass patch fitting. Source: glassdoor-hardware.com