The construction process of the knocking back bolt, the following small expansion anchor bolt manufacturer Xiaobian for everyone to introduce:

The back-bolt stone curtain wall as the mainstream high-end curtain wall dry hanging practice has always had an excellent reputation in the industry. The percussive back bolts account for more than 80% of the stone curtain wall, so this article will systematically explain the construction process of the tapping back bolt.

Classification of percussive back bolts

The percussive back bolts can be divided into two types, the ring type knock back bolts and the sheet type knock back bolts, wherein the ring type knock back bolts have a higher market share, and the mechanical properties of the two on most sheets. They are almost the same. However, the difficulty of processing the expansion ring of the ring-type striking back bolt has resulted in more than 50% of the ring-type knocking back bolts on the market being unqualified products. The quality of the expansion ring produced by Dali has reached the level of imported brands, which ensures absolute safety.

How to install the knockback back bolt

Before installing the tapping back bolt, firstly, the bolt hole should be backed on the plate. The width of the plate determines the arrangement position of the back bolt hole on the plate, which is also a point to be determined before the hole is opened.

Installing the back bolt is actually quite simple. The installation steps are as follows:

(1) Remove the flat washer, spring washer and nut of the back bolt and place the screw into the back bolt hole;

(2) The tapping sleeve is sleeved on the screw, and the tapping sleeve is hammered by the hammer until the back bolt sleeve is level with the plate;

(3) placing the flexible gasket and the supporting aluminum alloy pendant on the back bolt;

(4) Place the flat pad, spring washer and tighten the nut.

It should be noted that the back bolt is leaked at least 3mm after installation to ensure that the whole is not loose. Above we mentioned the aluminum alloy pendants. The aluminum alloy pendants of the general knocking back bolts are flat ear pendants and sub-female pendants (C-shaped pendants). To put it simply, the former is more cost-effective and more used on the project. However, the overall length of the back bolt should be paid attention to during construction to ensure that the back bolt is not attached to the corner of the supporting installation. Comprehensive support hanger manufacturers