How does a ratchet wrench work?

The ratchet wrench is a manual screw tightening tool, which is connected by the main torx sleeve and the slave torx sleeve of different specifications and sizes through the female key and the male key of the hinged key. The ratchet wrench is used for the tightening operation of the screw, and has the characteristics of strong applicability, convenient use and low cost.

The ratchet wrench includes a wrench body. A circlip, a pawl, a spring and a ratchet are arranged in the containing space of the head of the wrench body. The ratchet is composed of the ratchet body and a spacer. The spacer is a ring with a concave ring groove on the periphery. , The spacer is sleeved on one side of the ratchet body.

The ratchet wrench decomposes the ratchet component of the original one-piece structure into a combination of the ratchet body and the spacer, avoiding the processing difficulty caused by the high side of the concave ring groove on the original ratchet component, and the processing and production of the ratchet wrench. The efficiency is greatly improved and the production cost is also reduced.

The ratchet wrench can be used to rotate bolts or nuts in narrow or difficult-to-access positions, and it 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 impact of the weight.

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

The ratchet mechanism is a one-way intermittent motion mechanism composed of a ratchet wheel and a pawl. The ratchet mechanism is commonly used in the intermittent feed of various machine tools or the indexing of the rotary table, and it is also commonly used in the jack. In bicycles, the ratchet mechanism is used for one-way drive. In manual winches, the ratchet mechanism is commonly used to prevent reverse rotation. The ratchet mechanism is often accompanied by noise and vibration when working, so its working frequency cannot be too high. This is also the cause of the rattle when using the ratchet.
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