First, let's look at the external structure of the lower hoist. We can intuitively see: upper hook, lower hook, tongue, beam, lower hook frame, cover, nameplate, hand zipper strip and lifting chain.

Next, let's take a look at the internal structure of the hoist. These are the parts inside the housing, including: hand zipper wheel, lifting sprocket, five tooth long shaft, brake base, pawl, ratchet wheel, friction plate, left wall plate, right wall plate, outer wall plate, plate gear and spline hole gear.

Although the sparrow is small and has five internal organs, the above are the main parts of the chain hoist produced by Hangzhou guanhang Machinery Co., Ltd.