The floor spring is also a hydraulic door closer, except that the device that compresses the spring is a worm gear instead of a gear rack. Because the worm gear can rotate in the forward and reverse directions, the floor spring can be used for a bi-directionally open door and the door closer can only be used for a one-way open door.
The floor spring is also a hydraulic door closer, except that the device that compresses the spring is a worm gear instead of a gear rack. Because the worm gear can rotate in the forward and reverse directions, the floor spring can be used for a bi-directionally open door and the door closer can only be used for a one-way open door. The technical key of the ground spring is the bearing seat on the lower part of the main shaft, which determines the load-bearing level of the ground spring. Because the floor spring for bidirectional opening of the door carries the weight of the door body, the weight of the door body plays a decisive role in the selection of the floor spring compared to the door closer.
Door width and air pressure are also very important for the selection of floor spring models. From the production point of view, the worm gear structure of the ground spring makes the compression of the spring smaller than that of the rack and pinion driven by the rack and pinion, and the force arm of the floor spring closing door is also short, so the quality of the ground spring depends on the structural design and processing accuracy. higher. In addition, since the two-way opening door leaf has a great force on the floor spring along the door leaf surface, the gap between the service life of the low-grade floor spring and the high-grade spring will be great. The basic configuration of the ground spring is the sky axis and the ground axis (or foot).
The arbor is an accessory that connects the door frame and the door leaf to the upper part, and consists of a bolt-typed shaft that can be bolted to the door leaf and a bushing fixed to the door leaf. Axle ground axis can be applied to almost all wooden, steel, aluminum alloy doors and glass doors without the border of the glass door. The installation accuracy of the ground spring has a great influence on its service life. Because the end of the service life of the floor spring is oil leakage, if the axis of the axis is not strictly vertical to the ground axis of the ground spring main shaft, the movement of the door leaf will bring a great torsion to the floor spring, increasing the distance between the main shaft and the bearing. Worn out, eventually leading to oil spills.