The Difference between A Ratchet Wrench and A Torque Wrench

The ratchet sleeve plate hand is connected by different sizes of the main plum sleeve and from the plum sleeve through the articulated key stab sin and yang key bite sin. Since a plum set has two sizes of plum-shaped through holes.

1. the active trigger handle can easily adjust the wrench use angle. This wrench is used for the loosening operation of the screw, has the characteristics of strong applicability, easy to use and low cost.

2. torque wrench - also known as torque wrench or torque wrench, torque is the product of force and distance, in the fastening screw bolt nut and other thread fasteners need to control the amount of torque applied to ensure that the thread is fastened and not too much damage to the thread due to torque, so use torque wrench to operate. First set a desired maximum of torque value, when the applied torque reaches the set value, the wrench will make a "Kata" sound or wrench connection bend a little angle, which means that has been tightened no more force. 3. Their difference is that the torque of the torque wrench can be set. Torque wrench (torque wrench) issued Kata sound principle is very simple, can be divided into the following steps to understand: 1, torque wrench after the sound of "Kata" is to indicate that you have reached the required torque value;

3. torque wrench issued by the "Kata" is produced by its internal torque release structure, its structure is divided into pressure spring, torque release joint, torque top bar three structures.

4. first set the required torque value on the torque wrench (by the spring over the top lever to the torque release joint pressure), lock the torque wrench, start tightening the bolts. When the bolt reaches the torque value (when the torque is greater than the pressure of the spring), there is an instant disconnect effect. A joint knock is emitted in the moment of a disjoint effect, and the "Kata" sound from the metal shell of the wrench. This confirms the warning effect of reaching the torque value (in fact, it's like the principle that our arm joints are bent 15 degrees in an iron pipe and will touch the steel pipe after an instant straight.

It is said that the most commonly used manual torque wrench, in addition to the electric torque wrench, wind torque wrench and so on.

Structural torque wrench also known as a torsion meter, torque screw spinner. It is based on the bending principle of the beam, the bending principle of the torsion bar and the compression principle of the coil spring, and can measure the amount of torque acting on the nut.

The torque wrench has two kinds of flat plate type and dial type. The torque wrench has a long elastic rod with a handle at one end and a square or hexagonal head at the other end, and a convertible sleeve on the square or hexagonal head, which is stuck with a steel bead. A long pointer is also mounted on the top. The scale plate is fixed to the holder with a scale value of 1N (or kg/m) per square. Before use, the indicator mounted on the wrench is adjusted to the desired torque, and then the wrench is triggered, when the predetermined torque is reached, the pointer on the indicator will turn to the side of the pin shaft, and finally the pointer collides with the pin shaft, informing the operator through the speaker signal or sensing signal.