Pliers . (From the Hispanic Arabic allaqqáṭ , and this from the classical Arabic Laqqāṭ , pincers). Small steel pincer with curved arms and quadrangular or truncated cone tips, which is used to pick up and hold small objects or to twist wires, thin sheets or the like. Like similar tools are the pliers and the clamp .
Summary
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- 1 Structure
- 2 Types of pliers
- 3 Security measures
- 4 Sources
Structure
The pliers are structured in three pieces: two articulated arms and a clamping screw. The most common components are: clamp, chopper and wire cutter.
Main parts of a pliers.
Arms . They consist of two articulated scissor bars . At one end the two arms form the head or jaws of the pliers, where the jaw, chopper and wire cutter devices are located. The other ends constitute the handle , which are the clamping and clamping pieces, with an ergonomic design to be pressed with one hand, and which can be covered with an insulating material for electrical work . Usually one tip is used as a punch and the other as a screwdriver , for which they are suitably shaped.
Screw . It constitutes the means of union and articulation of the arms, and is usually cleft, that is, it does not protrude.
Gag . It consists of two elements: a central one in the form of arches that are used to hold round pieces such as screws and nuts , and another at the tip, which has flat faces, to bend sheets and wires . The jaws are grooved to facilitate grip.
Chopper . It consists of a clamp in the form of two bezels , which serve to cut wires, as well as to cut and displace the plastic coating of the electricity wires.
Wire cutters . They are grooves made on both sides but with a slight displacement between them that serve to cut wires. There are usually two, of different calibers.
Types of pliers
Plans . They are the most commonly used and commonly consist of all the devices listed above.
On end . The head is made of two conical points and is used to bend wires or rings in the form of a ring. Each tip is fluted on its inner edge for easy grip. The tips are sometimes angled (they form an arc or angle) to facilitate access to the components.
Cut . The grinding wheels have an internal edge along their entire length or most of it, and are used for cutting wires and sheets. One of its variants is the nail clipper.
For stripping cables . They are specially designed to cut and remove the plastic coating from electrically conductive cables.
Extensible . One of the legs has a succession of housings for the screw, so that the jaws can be opened to the convenient separation, much larger than with a common pliers.
Pressure . They have a mechanism to firmly fix the jaws and avoid slipping during high pressure work.
Security measures
Never work on electrical equipment with a pliers whose arms are not covered with insulating material, and which is kept in good condition. This coating should end in protrusions that serve as a stop for the hand to prevent it from smearing and touching the non-insulated part. The pliers must not be used as a lever or hammer, nor hit on them, to avoid deterioration. It is recommended to manipulate the pliers using an appropriate glove.
