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Firstly, draw a line so that the center of the ground spring shaft coincides with the door clamp shaft. According to the manual and the actual object, holes should be drilled on the ground, and the size of the holes should be tightly matched with the ground spring housing and not loose. Place the ground spring into the opened hole and straighten it. Lift the door leaf with the door clamp installed and insert the pivot of the floor spring into the pivot hole of the door leaf. Adjust the screws in the three directions of the floor spring to keep the door leaf vertical and to align the upper and lower rotation axes. Adjust the speed of closing the door. Cover the floor spring decorative cover

The installation accuracy of the ground spring has a significant impact on its service life. The quality defects of the ground spring mainly include oil leakage in the body and eccentricity of the ground shaft. The oil leakage of the body is caused by the casting process of the ground spring. If sand holes are caused during the casting process, the internal hydraulic pressure of the body will increase after installation, resulting in oil leakage.

Eccentricity of the ground axis can cause the door body to deviate from the centerline of the door leaf after installation. Although adjusting the position can compensate for some quality defects, it is still advisable to contact the manufacturer for replacement. The end of the service life of the ground spring is due to oil leakage and weakened elasticity of the axis. 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 large torque to the ground spring, increase wear between the spindle and bearings, and cause oil leakage of the axis. Springs inevitably weaken their elasticity after long-term stretching movements.