What are the principles and characteristics of a wrench?

Update:14-01-2021
Summary:

Wrench principle The ratchet wrench is used for rotatin […]

Wrench principle

The ratchet wrench is used for rotating bolts or nuts placed in narrow or difficult to access positions, and the ratchet wrench is rotatably connected with the end of the operating rod. The ratchet wrench includes a weight connected with an operating rod, the weight can slide along the length of the operating rod, and the operating rod at the front of the weight has a front weight bearing part that blocks the collision of the weight.

Alternatively, the operating rod at the rear of the weight has a rear weight bearing part that blocks the collision of the weight. Moreover, the operating lever may also have both a front weight bearing part and a rear weight bearing part.

Ratchet wrench

Features

Pneumatic 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, anti-scratch, anti-dissolution, strong anti-rust ability.
The unique combination structure of the box cover and box body is firm and strong.
The specially designed heavy-duty R-angle drawer handle is easy to pull and close.
Double ball slide rail design, with self-locking function.
Plastic-coated side handles make dragging easier.

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