The working principle of claws in a chain hoist

The braking system is an important part of the chain block, mainly composed of friction plates, ratchet wheels, claws, and brake seats. Each component plays its own role in the entire braking system and is indispensable. Today we will talk about how claws work.

We all know that the braking system of a chain hoist is a reverse braking system, which pulls the hand zipper strip and drives the hand chain wheel to move clockwise. At this point, the braking system begins to take effect, with the ratchet and friction plates on both sides pressing together to achieve a deceleration effect. The entire braking system rotates counterclockwise under the influence of the load gravity, and at this point, the pawl begins to take effect.

Under the action of load gravity, the friction plate and ratchet begin to separate, and the pawl engages with the ratchet under the action of the spring to achieve the first braking. Pull the manual chain, and the friction plate and ratchet are pressed together again, causing the pawl to retract. Under the action of load gravity, the friction plate and ratchet wheel separate again, and the pawl meshes with the ratchet wheel again.

The entire process of the chain hoist requires the braking system to repeatedly squeeze, separate, and engage. This is the working principle of the pawl in the entire braking system. The pawl is a component that intermittently moves the ratchet wheel, and the engagement between the pawl and the ratchet wheel is also the key to achieving safe operation of the chain hoist.