Adjustable wrench is also one of the most commonly used tools in our daily life! Then let's get to know it better!
Adjustable wrench is referred to as adjustable socket wrench. Its opening width can be adjusted within a certain range. It is a tool used to tighten and loosen nuts and bolts of different specifications. Adjustable wrench is a common tool for maintenance workers. Because its opening can be adjusted within a certain range, it is very convenient to use. It can be used not only for standard metric bolts and inch bolts, but also for some self-made non-standard bolts.
The inventor of the adjustable wrench was the Swedish Johan Petter Johansson (1853-1943), who invented the adjustable wrench in 1892.
The adjustable wrench is composed of a head and a handle, and the head is composed of a movable plate lip, a rigid lip, a plate mouth, a turbine and a shaft pin. Rotating the turbine can adjust the size of the orifice. Specifications are expressed as length × relatively large opening width (unit: mm). Electricians commonly use four sizes: 150mm×19mm(6’), 200mm×24mm(8’), 250mm×30mm(10’) and 300mm×36mm(12’).
(1) When turning the large nut, a large torque is often used, and the hand should be held near the end of the handle.
(2) When turning the small nut, the torque used is not large, but the nut is too small and easy to slip, so the hand should be held close to the head of the board. This allows the turbine to be adjusted at any time and tightens the flapper lips to prevent slippage.
(3) The adjustable wrench cannot be reversed to avoid damage to the plate lip, nor can the steel pipe be used to extend the handle to increase the torque.