How are the bookshelves fixed on the wall?
The wall shelves generally use wall drilling, with expansion screws, and wall mounted harness, plate punching to the above can also be. Furthermore, the decorative board can be purchased and slotted into the end.
One end of the screw is threaded, and the other has taper. Outside the bread (some tin pipe), iron cylinder (steel tube) has several half incision, put them together into the wall lay the hole, then the lock nut, the nut screw pull, pull cylinder taper iron, iron cylinder is open up, so tightly fixed on the wall, generally used for protection bar, awning, air conditioning and other fastening in the cement, bricks and other materials. But its fixed is not very reliable, if the load has a larger vibration, may be loose, so it is not recommended for the installation of ceiling fans.
Expansion screw generally refers to the metal expansion screws, expansion screws fixed, but the use of wedge slope to promote expansion, friction, grip force, to achieve fixed effect.
1. if the thickness is more than 3 centimeters, the construction method is wooden keel + decorative panel (nail wrapped in it is not visible)2. if the thickness is about 2 centimeters, the construction method is slotted on the wall, joinery into the wall, and then affixed to the decorative panelsMost of the 3. class devices are called decorative laminates.
