Adjustable wrench pictures, usage requirements and purchase skills
Adjustable wrenches are mainly used to tighten square and hexagon screws and various nuts. The adjustable wrench is composed of a main body, a fixed jaw, a movable jaw and a worm. Its opening size can be adjusted within a certain range by the worm. Next, let's take a look at this commonly used tool through some pictures of adjustable wrenches!
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Monkey wrench pictures
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Brief introduction of adjustable wrench
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The inventor of the spanner wrench was Johan Petter Johansson (1853-1943), who invented the spanner wrench in 1892. 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 homemade non-standard bolts. 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. The size of the plate opening can be adjusted by rotating the turbine. The specifications are expressed as length × maximum opening width (unit: mm). There are four specifications commonly used by electricians: 150mm × 19mm (6 '), 200mm × 24mm (8'), 250mm × 30mm (10 ') and 300mm × 36mm (12').
The structure characteristic of the adjustable wrench is that the fixed jaw is made into a flat jaw with fine teeth; one end of the movable jaw is made into a flat jaw; the other end is made into a concave jaw with fine teeth; The jaws can be quickly removed and the position of the jaws can be changed.
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Adjustable wrench requirements
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1. When pulling the large nut, a large torque is often used, and the hand should be held near the end of the handle.
2. When pulling 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 can adjust the turbine at any time, tighten the movable plate lip and prevent slipping.
3. The adjustable wrench should not be used to avoid damage to the lip of the plate, nor can it be used to increase the torque with the steel pipe extension handle.
4. An adjustable wrench is an adjustable wrench. Do not use it as a hammering tool, and do not take any length of the wrench handle.
5. Do not stand in the direction of the force when using it to prevent injuries caused by improper force.
6. After using the wrench, pay attention to cleaning with alcohol or rust remover to prevent inconvenience caused by rust.
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Monkey wrench purchase skills
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Lock a few good products: The top ten brand wrench tool ranking is to select the few brands that are currently sold and rated best, and you can target the products in these products.
Look at sales: Generally speaking, the high sales are recognized by most people, at least many people have used it, combined with the evaluation can see how the functional quality of each product.
Look at the evaluation: The evaluation information of the product is the best information about the good and bad of a product. In the case of similar sales, the better the evaluation, the higher the recognition of the product.
Look at the price: On the basis of functional recognition, choose an acceptable price, and then you have selected the wrench tool that is most suitable for you.
The above is the content of the picture of the spanner wrench shown to friends. The spanner wrench is a very common tool in our lives. Generally, each household will have one. Therefore, we should have a comprehensive understanding of it, so as to know how to use it correctly.
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