1 Introduction

A manual screw tightness tool, single-head, double-head multi-specification movable handle ratchet plum wrench (fixed hole). It is connected by the main plum blossom sleeve of different specifications and sizes and the slave plum blossom sleeve through the articulation of the female key and the male key. Because a plum blossom sleeve has two specifications of plum blossom-shaped through holes, it can be used for the tightness of screws of two specifications, thus expanding the scope of use and saving raw materials and labor costs. The movable lever handle can be easily used at an angle of adjustable wrench. This wrench is used for the tightness operation of screws and has the characteristics of strong applicability, convenient use and low cost.
2 Principle editing

A ratchet wrench for rotating bolts or nuts placed in narrow or inaccessible positions, and the ratchet wrench is rotatably connected with the end of operating lever. Ratchet wrench includes: a operating lever connected with clump weight, clump weight can slide along the length of operating lever, and there is a front clump weight bearing part blocking the collision of operating lever on the front clump weight of said clump weight. Or, there is a rear clump weight bearing part blocking the collision of the operating lever on the clump weight at the rear of the clump weight. Moreover, the operating lever can also have both front clump weight bearing part and rear clump weight bearing part.

3 Product Feature Editing

pressure Rod top cover device, opening the box cover is more labor-saving, smooth and fast.
 
The safety cylinder lock device is stronger and has better anti-theft performance.
 
Sand paint surface, scratch resistance, dissolution resistance, strong rust resistance.
 
The unique combination structure of box cover and box is firm and firm.
 
Specially designed heavy duty R angle drawer handle, easy to pull and close.
 
Double Ball slide design with self-locking function.
 
Plastic-coated side handle makes it easier to drag and drop.
 
Ratchet wrench

4 Difference between ratchet wrench and torque wrench Edit

ratchet socket wrench 1. A manual screw tightness tool, single-head, double-head multi-specification movable handle ratchet plum wrench (fixed hole). It is connected by the main plum blossom sleeve of different specifications and sizes and the slave plum blossom sleeve through the articulation of the female key and the male key. Because a plum blossom sleeve has two specifications of plum blossom-shaped through holes, it can be used for the tightness of screws of two specifications, thus expanding the scope of use and saving raw materials and labor costs.
 
The movable lever handle can be easily used at an angle of adjustable wrench. This wrench is used for the tightness operation of screws and has the characteristics of strong applicability, convenient use and low cost.
 
2. Torque wrench-also called torque wrench or torque wrench, torque is the product of force and distance. When threaded fasteners such as fastening screws bolt and nut need to control the amount of torque applied, to ensure that the thread is tightened and the thread is not damaged due to excessive torque, torque wrench is used for operation. First, set an upper limit of the required torque value. When the applied torque reaches the set value, the wrench will make a "Karta" sound or bend a little angle at the joint of the wrench, this means that it has been tightened and no more force is added. 3. The difference between them is that the torque of torque wrench can be set. Torque Wrench (torque wrench) the principle of making Kata sound is very simple, which can be divided into the following steps to understand: 1, torque wrench after the sound of "kata", it indicates that the torque value you required has been reached;
 
3. The "kata" issued by torque wrench is generated by its internal torque release structure, which consists of three structures: pressure spring, Torque release joint and torque ejector pin.
 
4. First set the required torque value on the torque wrench (put pressure on the torque release joint on the ejector rod by Spring housing), lock the torque wrench, and start to tight a bolt. When the bolt reaches the torque value (when the torsion force is greater than the spring pressure), it will produce the effect of instantaneous disconnection. At the moment when the disjunction effect is generated, the joint tapping is made, and the sound of "kata" is made by the metal shell of the wrench. So as to confirm the reminder effect of reaching the torque value (in fact, it is the same as the principle that our arm joints will encounter steel pipes after being bent to 15 degrees and placed in the iron pipe for instant straightening).
 
It is said that the most commonly used manual torque wrench, in addition, there are electric torque wrench, pneumatic torque wrench, etc.
 
Structural torque wrench is also called torsion meter, torque screw screwdriver. It is designed according to the bending principle of beam, the bending principle of torsion bar and the compression principle of spiral spring, and can measure the torque acting on the nut.
 
Torque Wrench also has two types: Flat type and dial type. The torque wrench has a long elastic rod with a handle on one end and a square head or hex HD on the other end. A replaceable sleeve is set on the square head or hex HD and stuck with steel balls. A long pointer is also installed on the top. Scale plate is fixed on the handle seat, and the scale value of each grid is 1N (or kg/m). Before use, adjust the indicator installed on the wrench to the required torque, and then pull the wrench. When the predetermined torque is reached, the pointer on the indicator will rotate to one side of the pin shaft, finally, the pointer collides with the pin shaft and informs the operator through the sound box signal or sensing signal.