A wrench is a commonly used installation and removal tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threads to tighten the openings or holes of bolts or nuts. Wrenches usually have a clamping handle at one or both ends of the handle. When applying external force to the handle, the bolt or nut can be turned. When using, apply external force to the handle along the direction of thread rotation to turn the bolt or nut. What types of wrenches are there? Here are several types of wrenches compiled by the editor. See how many you know?
1
Single-head fixed wrench and double-head fixed wrench
Used to tighten or remove hexagonal or square head nuts and bolts, single-head single specification, double-head double specifications.
2
Plum wrench and single-head plum wrench
Only suitable for hexagonal nuts and bolts, because it is an elbow, it is particularly suitable for work occasions with a narrow position, located in a recess, and cannot accommodate a fixed wrench. There are also bent-handle plum wrenches, which solve the use problems of some special environments.
3
Ratchet wrench
A ratchet wrench is a manual screw tightening tool, a single-head, double-head, and multi-specification movable handle ratchet plum wrench (fixed hole). It is connected by the main plum sleeve and the slave plum sleeve of different specifications and sizes through the female key and male key of the hinge key. Since a plum sleeve has two specifications of plum-shaped through holes, it can be used for tightening and loosening screws of two specifications, thereby expanding the scope of use and saving raw materials and labor costs. The movable handle can easily adjust the angle of the wrench. This wrench is used for tightening and loosening screws, and has the characteristics of strong applicability, easy use, and low cost. Official account "Mechanical Engineering Collection", the gas station for engineers!
4
Adjustable wrench
The opening width can be adjusted within a certain size range, and can turn bolts or nuts of different specifications. The adjustable wrench, also known as the movable wrench, has an opening width that can be adjusted within a certain range. It is a tool used to tighten and loosen nuts and bolts of different specifications. The adjustable wrench consists of a head and a handle. The head consists of an adjustable plate lip, a fixed lip, a plate mouth, a turbine and a shaft pin. The size of the plate mouth can be adjusted by rotating the turbine.
5
Hexagonal wrench
Tighten or remove hexagonal screws. The hexagonal wrench is also called an Allen wrench. Common English names include "Allen key (or Allen wrench)" and "Hex key" (or Hexwrench). It applies force to the screw through torque, greatly reducing the user's force intensity. It is an indispensable tool in the industrial manufacturing industry.
6
Socket wrench
It is divided into manual and pneumatic. The manual socket wrench is the most widely used. It consists of various socket heads, transmission accessories and connectors. It has the function of tightening or removing hexagonal bolts and nuts. It is particularly suitable for occasions with narrow space or deep recesses. The accessories of the manual socket wrench are as follows:
(1) Ratchet wrench
(2) Slide bar: The position of the slide head can be moved to adjust the size of the force arm.
(3) Universal joint: similar to the steering handle.
(4) Extension rod: can rotate nuts and bolts in deeper recesses.
(5) Sleeve: available in six-hole and twelve-hole versions.
7
T-type flat wrench
Generally, there are more than one specification for hexagonal wrenches. If a certain specification is fixed, it will be difficult to meet the needs.
The same is true for T-type hexagonal wrenches. There are many specifications such as 2mm, 2.5mm, 3mm, 4mm, 6mm, 8mm, 10mm, etc., with different sizes.
