How to deal with automatic door derailment?
The design of automatic door rails is completely different from the design of non-automatic door rails. The latter usually has two horizontal parallel slide rails. Two (or four) pulleys are connected to the suspended moving door body through a middle connection. The center of gravity of the moving door body is exactly between the support forces of the two slide rails. , Forming a stable "positive suspension", this stable structure can achieve good stability and mute effect. However, the slide rail of the automatic door needs to take into account the functions of fixing with the door frame, hanging and adjusting the door body, installing electrical components, and installing the outer cover. Road, the door body is hung on the slide rail by a pulley on one side to form a side suspension. The advantage of this design is that the door body is easy to install and adjust, and maintenance is also easy. However, this design has many fatal weaknesses.
Because it is a side suspension structure, the upward supporting force for the door body is all on one line, and the center of gravity of the door is affected by the error of installation accuracy and the influence of wind. The door body not only forms a static side swing but also generates a dynamic side swing. to this end. This type of guide block at the lower part of the moving door is usually called a "swing stop block". A bearing is used. The bearing diameter is smaller than the guide groove at the lower part of the door. The vibration generated by such a side swing appears as noise in the use effect, and its consequences will inevitably lead to wear of the pulley and the guide rail. Second, this side suspension structure keeps the guide rail and the pulley in a completely open state, so it is easy to accumulate dust, and the accumulated dust causes serious wear between the guide rail and the pulley. So care must be taken when using this automatic door. Third, the gap between the pulley and the upper part of the guide rail can easily cause the door to slide off, and the safety of use cannot be guaranteed. Therefore, when choosing such an automatic door, attention must be paid to the wind pressure resistance of the automatic door. Fourth, this unstable operation causes the driver load to constantly change.
- Previous: How to calculate how much is the automatic induction door? 2015/8/18
- Next: What are the precautions for fingerprint attendance? 2015/8/6