发布人：http://www.kdjlm.com 发布时间：2020-03-26 14:44:03
The main difference between a manual garage door and an automatic garage door is that there is no motor. The automatic garage door is mainly divided into: rotary disc garage door and rolling shutter garage door. When the door is large, it is inconvenient to install on the ground door body, and the garage door plays a convenient and quick role in opening. In the existing automatic cutting door, it is a common rotating plate cutting door. The cutting door is equipped with a damping spring balance system. Its principle is the torque generated by the torsion spring balance system and the quality of the door. With the help of the torsion spring balance system, the up and down movement is realized. Because the door body is in the "zero weight" state and runs in the track by the pulley, the resistance is small, the energy consumption is small, and the maintenance rate is low, and the wear resistance is good. The torsion tube is usually equipped with two mutually connected torsion springs, both ends of which are respectively equipped with fixed spring joints and rotary spring joints.
At present, the fixed torsion spring joint of the door is made of iron, which has the advantages of large weight, short service life, high cost and serious environmental pollution. The fixed torsion spring joint commonly used in garage door is composed of a whole. A torsion spring is embedded in the mounting body under the joint body, and then the torsion spring joint is fixed on the torsion pipe. Although the combination of torsion spring is light in weight and low in cost, it is found that the two ends of the concentricity joint torsion spring of torsion spring are pitifully installed after long-term use and high wear, resulting in short service life.
The fixed torsion spring joint of garage door switch includes the installation of joint body and body at the bottom of joint. After installation, the body position torsion spring is installed. The center of the body of the connector is equipped with an installation groove. The joint is fixed with the body along the radial direction and the second fixed body, and the fixed body and the second fixed body are located in the center of the same line. The first fixed body is equipped with a first installation hole, The second fixing is provided with a second mounting hole on the body which is provided with a first slot and a slot described by the first thread relative to the second slot, a notch slot and a second slot between the first thread. The utility model can avoid the shaking of the torsion tube, improve the coaxiality of the fixed torsion spring joint after the garage door is installed, effectively reduce the abrasion and improve the service life of the door.