HSZ系列手拉葫芦作为一款使用简单、携带方便的手动起重机械，广泛的适用于工厂、矿山、建筑工地、农业生产及码头、船坞、仓库等地用作安装机器起吊货物，尤其是对露天及无电源作业具有显著优势。那么其结构特点有哪些优势呢？

HSZ系列手拉葫芦采用对称排列的二级正齿轮转动，主要零部件有手拉链条、手链轮、制动器、起重链条和起重链轮等。通过手拽动手拉链条，手链轮转动，将摩擦片、棘轮以及制动器一体共同旋转，五齿长轴便转动片齿轮、4齿短轴和花键孔齿轮，这样与花键孔齿轮啮合的起重链轮带动起重链条，能够平稳地起升重物。尤其适用于露天无电源工作场景。

HSZ series chain hoist, as a simple and portable manual lifting machine, is widely used in factories, mines, construction sites, agricultural production and wharves, docks, warehouses and other places to install machinery to lift goods, especially for open-air and non-power operations. What are the advantages of its structural characteristics?

HSZ series chain block is rotated by a symmetrical arrangement of secondary spur gears, and its main components include hand zipper bar, hand chain wheel, brake, lifting chain and lifting sprocket. By manually pulling the hand zipper bar and rotating the hand chain wheel, the friction plate, ratchet and brake will rotate together, and the five-tooth long shaft will turn the plate gear, the four-tooth short shaft and the spline hole gear, so that the lifting sprocket meshing with the spline hole gear will drive the lifting chain, and can stably lift the load. It is especially suitable for outdoor work without power supply.