PVC Self-Repair High Speed Zipper Door
Zipper quick door
The curtain of the high-speed zipper door is made of 1.2MM PVC coating cloth which can be embedded into the window. The unique design of this zipper door makes it possible to provide efficient goods entrance and exit under the premise of minimizing heat loss, so as to maintain the original temperature conditions in the room. The high-speed zipper door can provide different opening and closing speeds. According to the different needs of customers to provide the best speed of adaptation. The high speed zipper door curtain section ensures the safety of equipment and personnel without any solid parts. The high speed zipper door has a self-repair function, which means that even if the curtain is derailed in the middle (e.g., hit by a forklift), The self-healing system will automatically guide the curtain rerail in the next loop.) We can do this in the event that the front or back of the door hits the curtain and derails.
The new zipper is professional for derailed repair zipper door, zipper head material nylon 66, with built-in steel wire rope and screws fixed curtain, under the impact of gravity can let the curtain out of the rapid and correct return to the track, and track teeth without damage, durable, improve the original zipper teeth easy to wear defects.
PVC auto-repair fast door,automatic industrial sectional door, PVC Self-recovery high speed door,rapid PVC high speed door,self-repairing high speed doors SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfarrs.com
At present, the commonly used single-stage gear vibration analysis model has two or fourteen degrees of freedom and other models. The two-degree-of-freedom model only considers the meshing stiffness variation of the gear teeth and the influence of the meshing damping on the torsional vibration of the gear system. Vibration model. However, with this model, the influence of the additional dynamic load of the tooth surface and the meshing error on the dynamic load caused by the vibration during the operation of the gear can be calculated more accurately. Since the stiffness of the shaft and the bearing in the gear system is generally much larger than the rigidity of the gear teeth, this The model is still widely used. The multi-degree-of-freedom vibration analysis model of the single-stage gear transmission not only considers the deformation of the gear shaft and the bearing, but also considers the influence of the asymmetric arrangement of the gear, and is a comprehensive analysis model. The model can be simplified into a relatively simple analysis model according to the specific working conditions of the gears. The application time of the double arc gear in the mechanical department is still short, and the use surface is narrow. At present, there is no systematic study of double arcs at home and abroad. Report on the dynamics of gear transmission.
With the wide application of the double arc gear reducer and the continuous improvement of the management level, it is extremely urgent to carry out in-depth research on the vibration characteristics of the double arc gear reducer. Due to the complicated tooth profile of the double-arc gear, there is a non-smooth line in the middle of the tooth profile. Therefore, the single-tooth meshing stiffness of a double-arc gear is calculated by the finite element method and then numerically. The variation law of the meshing stiffness of the double arc gear is obtained. Although a few theoretical analysis and experimental research results have been published, the resulting formula has many limitations and is difficult to apply to engineering practice. When using the finite element method to calculate the single-tooth meshing stiffness of a double-arc gear, the main analytical models used are the curved tooth model and the oblique straight tooth model. The curved tooth model better reflects the tooth profile of the double circular arc gear, and the load is processed according to the elliptical contact surface, so that the relationship between the meshing stiffness and the helix angle can be well obtained.