Iron material durable floor spring 7300 Black

Suitable door size:1000*2100mm

Suitable door weight:100kg

The floor spring is also a hydraulic door closer, but its device for compressing the spring is a worm gear rather than a gear rack. Because the worm gear can rotate in both directions, the floor spring can be used for doors that open in both directions, while the door closer can only be used for doors that open in one direction. The technical key of the ground spring is the load-bearing seat under the main shaft, which determines the load-bearing level of the ground spring. Because the floor spring used for two-way door opening needs to bear the weight of the door body, compared to the door closer, the weight of the door body plays a decisive role in the selection of the floor spring. The door width and wind pressure are also very important for the selection of floor spring models. From a manufacturing perspective, the worm gear structure of the ground spring makes the spring compress more than the gear rack driven door closer
Small, the force arm of the floor spring closing door is also short, so the quality of the floor spring depends more on structural design and machining accuracy. In addition, due to the significant force exerted on the floor spring by the door leaf of the bidirectional door opening along the plane of the door leaf, the service life of the low-end floor spring will differ greatly from that of the high-end floor spring. The basic configuration of the ground spring is the sky axis and the earth axis (also known as the foot). The skylight is an accessory that connects the door frame and door leaf at the upper part, consisting of a bolt type shaft fixed on the door leaf that can be adjusted with bolts and a shaft sleeve fixed on the door leaf. The axis of heaven and earth can be applied to almost all wooden, steel, aluminum alloy doors, and frameless glass doors using glass door clips
. The installation accuracy of the ground spring has a significant impact on its service life. Because the end of the service life of the ground spring is oil leakage, if the axis line between the sky axis and the ground spring spindle is not strictly perpendicular to the ground, the movement of the door leaf will bring great torque to the ground spring, increase wear between the spindle and bearings, and ultimately lead to oil leakage.
Working principle of ground spring
1. Fix the door leaf and support the self weight of the door;
2. The fixed frame door leaf opens within a range of 180 degrees;
3. Do not let the door leaf swing and injure people when closed.