Good Quality Portable Crane Hoist - Manual Chain Hoist HSZ-C – Hardlift

The new series is designed compact and built for quality and safe, efficient operation.

A lightweight hoist with low maintenance and at economical price.

Automatic screw-and-disc type load brake with corrosion protected components

Forged suspension and load hooks, manufactured from non-aging, high alloy tempering steel, yield under overload instead of breaking

Two guide rollers and a heat treated load sheave with 4 precision machined chain pockets ensure smooth operation of the chain

The construction prevents a blocking and slipping of the hand chain

Main article: Hoist (mining)

A mining hoist (also known simply as a hoist or winder) is used in underground mining to raise and lower conveyances within the mine shaft. It is similar to an elevator, used for raising humans, equipment, and assorted loads.

Human, animal and water power were used to power the mine hoists documented in Agricola’s De Re Metallica, published in 1556. Stationary steam engines were commonly used to power mine hoists through the 19th century and into the 20th, as at the Quincy Mine, where a 4-cylinder cross-compound corliss engine was used. Modern hoists are powered using electric motors, historically with direct current drives utilizing solid-state converters (thyristors); however, modern large hoists use alternating current drives that are variable-frequency controlled. There are three principal types of hoists used in mining applications, Drum Hoists, Friction (or Kope) hoists and Blair multi-rope hoists. Hoist can be defined as anything that is used to lift any heavy materials.

[This article is quoted from Wikipedia. Please let us know if there is any infringement]