What is an anchor, the main types of anchors

Is it worth it to mount something on a nail to a concrete wall? Or are there any more effective ways of fastening? These and other questions will be answered by this article, which tells about the actual fastening devices - anchors, we will understand what an anchor is and what kinds of anchors there are. The assortment of anchors on the market is represented by a myriad of different modifications, for example: the KA anchor anchor, the LAH anchor anchor, the RU anchor, the rod anchor TA, the screw anchor RA, the anchor anchor SORMAT, DRIVA, the brass anchor MSA, the anchors MTA, KVTM, PFG, OLA, etc.

When performing finishing, repair, or construction work, it is impossible to do without fasteners. These may be screws or nails, that is, devices that themselves, without any additional parts are able to bind materials and withstand the appropriate load. They can be applied to sheets of gypsum board, wood, or thin elements made of metal, the fixation that occurs between these simple fasteners and the base is enough to effectively fix and perceive the load on this structure.

However, if the base is made of stone, concrete or brick and has a high( in comparison with light materials) hardness, the use of such a fastening can not solve the problems arising. In order to make sure of this, it's enough just to try to drive a nail into the wall from concrete, and immediately the justice of the given statement will become clear.

Anchor is translated from German as an "anchor", and this name fully explains the principle of its functioning. The fastening element is attached to the main body not directly, but using dowels or anchors, which are designed to provide the necessary clutch moment. The conclusion is this: it is extremely difficult to make a specific separation between the dowel and the anchor. We have formed the opinion that the dowel or anchor is a part which by some( chemical or mechanical) method increases the bond between the main product to be attached and the base. To the level at which these elements are able to transfer the load imposed on them. In general, the dowel is a lighter version of the anchor.

The main types of anchors

The area of ​​application of anchors in the construction works is the fastening of heavy structures. When carrying out repair work in the apartment, the anchorage is used mainly for fixing window and door frames, when attaching false ceilings, and also when installing chandeliers and lamps. Now it is clear what an anchor is, we turn to the types and places of application with photo examples.

Drum anchors brass, steel

Driving anchors LA, LAH.This is the simplest kind of anchorage, which has an internal thread. Used for installation in stone, brick or concrete structures. It is inserted into a pre-drilled hole of the required diameter and depth. The hole for this type of anchor( as for all others) must be cleaned beforehand. After the anchor is inserted into the hole, it is released by a special device, thereby achieving the desired degree of adhesion. In the wake of this, a threaded fastening element is screwed into the anchor. Also to this type is the MTA anchor, which is used for bases with internal cavities.

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Wedge anchors with nut

Wedge anchors KA.They are made using various technologies and can be electro-zinc-coated KA, acid-proof KAH, and hot-dip galvanized KAK.Equipped with a special blade, which during the installation expands and is fixed in the hole. Allows you to make a through fastening through the base material. It is inserted into the prepared hole, driven with a hammer and tightened with a conventional key. For products of this type include screw anchors RAR - stainless, or RA - electro-zinc. These types of anchors are equipped with a screw with a sinking head. This allows you to use them for fastening door and window boxes. During the tightening of the screw, the anchor blade is securely attached to the fastening hole.

Rod holders

The rod holder RU works on the principle of a wedge anchor, made for installation through several facing and insulating layers. An additional quality of such products is the ability to make its installation at a small angle to the surface. The method of fixation in the nest with an expanding wedge is also used in the construction of the rod anchor TA.This product, equipped with an internal thread complete with a rod, which, if necessary, can be cut to bring it to the required length, can be used to attach several layers of materials. After plugging the anchor into the fixing hole, the fixed element is fixed to the rod using a washer and nut.

PFG anchors

PFG anchors are internally threaded and, in the course of tightening in them, the insert parts expand and are effectively fixed in the socket. The PFG anchor can be used in combination with the insertion bolt IR, the bolt with the hook head AK, the conical bolt VR, the bolt equipped with the loop SR or having the insert sleeves IHH, IH.This anchorage is used for work with solid bases.

Brass anchor MSA

The structural basis for this type of anchor is concrete, stone or brick. The brass sleeve of this anchor MSA is equipped with an internal cavity having a conical shape( threaded), which gradually narrows to the point. With this narrowing, during the tightening of the screw, the sleeve expands and is tightly fixed by its not even walls inside the fixing hole made at the base.