[0004] With the advancement of science and technology, automatic door machines have also made various improvements, such as the newly developed revolving automatic
doors and arc-shaped automatic doors, which make the application of automatic door machines more extensive, but for automatic door machines during use The problems that arise, especially the safety and wear of the guide rails, the load-bearing problems of the spreader and the installation accuracy of the door leaves, are all selectively ignored or the proposed solutions fail to achieve results
[0005]
Chinese patent CN982068646 discloses an automatic door with split guide rails. In the automatic door, the guide rails are connected separately to the cabinet, and the hanging wheels are arranged on the guide rails. Although the damage and replacement of the guide rails do not involve the cabinet, the guide rails are movably installed on the The frame on the
chassis is easy to slip, especially when the rollers roll on the guide rails for a long time, the guide rails will easily move with the rollers;
Chinese patent CN0222517X discloses an induction automatic door machine, the hanging part of which is a spreader, through the belt Drive the rollers on the spreader to walk on the track. The structure of the spreader is extremely simple. There is no gap adjustment device with the ground and the wall. The installation accuracy of the automatic door is extremely high. Once the size of the door body is inconsistent with the actual installation size , it will increase the difficulty of construction, time-consuming and labor-intensive, what's more, if the door body is made of
toughened glass and other materials that cannot be
cut at will, the door body must be reworked and re-customized, which will cause irreparable damage to the construction period and
economic benefits. loss, and the induction automatic door machine is prone to the phenomenon that the rollers fall off the track, the stability and reliability are poor, and there is a great
threat to the smooth use of the automatic door machine;
Chinese patent CN2009201247701 discloses an automatic induction door hanging The hanging device uses a long
waist hole as the installation hole of the induction door installation frame and the support plate to adjust the gap between the door body, the ground and the wall, and sets a
limiter between the two walking wheels on the support plate. Bit wheels are used to prevent the entire hanging device from falling off the guide rail. Although this device can solve the problem of high installation accuracy and
derailment of the rollers to a certain extent, bolts and nuts are used to fasten the connection when adjusting the gap between the door body and the ground. The bolts in the door body are subjected to radial
shear force during the sliding process of the door body. If things go on like this, the bolts will inevitably be deformed.
[0006] In summary, among the existing improvements to the automatic door operator, the problems in the automatic door operator still have not been solved: the installation precision of the door body is high, the size of the door body is completely consistent with the accuracy of the actual installation size, and there is no one correct The quality of the installation depends entirely on the manual control of the operating force; the phenomenon that the rollers are easy to fall off the track, the stability and reliability are poor, and there is a great
threat to the smooth use of the automatic door machine; the rollers and guide rails The friction is serious, and the guide rails are all connected with the power host, which makes it difficult to replace the rollers and guide rails; the hanging device has poor load-
bearing capacity, is easy to deform, and has a short service life; in addition, the
design load of the existing automatic door machine is small. It is not suitable for the requirements of automatic doors in some fields. For example, in the application field of automatic doors for
medical radiation protection, there are special regulations on the thickness and material of the automatic doors. Generally, lead plates of a certain thickness are laid in the
medical radiation protection doors. Therefore, the weight of the door body is relatively heavy, and the design of the existing automatic door machine cannot bear the weight of the door body. Even if it can bear the weight, it will be deformed after two years of use and affect its normal use. economic loss