Hand chain hoist. ． It has a very good market share at home and abroad. In fact, the hand chain hoist that was first produced was not what we see now. It has gone through layers of replacement models before it evolved into the beautiful and practical hand chain hoist it is now. .
The earliest hand chain hoist. ． It is a differential hoist, which is the simplest structure and lowest cost among chain hoisting devices. Its rated efficiency is about 3. It has a double-slot upper pulley and a single-slot lower pulley, which are connected by a series of circulating chains for lifting and maneuvering purposes.
With the development of science and technology, spiral gear hoists have replaced the earliest differential hoists. In comparison, the cost of spiral gear hoists is higher. The increased cost is compensated by the increased mechanical rated efficiency. The operating speed is slower than that of the differential hoist, but more stable.
Later, many manufacturers began to produce spur gear hoists, which were more efficient and more economical in the long run. This is a high speed hoist combined with a Weston self-exciting valve with a rated mechanical efficiency of approx. Spur gear hoists come in many forms, with light alloy and more rolling bearings being two of the standard models.
Later it evolved into the current hand chain hoist with beautiful appearance, small hand pulling force and high efficiency. After watching the evolution of the chain hoist, do you have a new understanding of the chain hoist?
Ruibei Hand Chain Hoist Purchasing Network Hand Chain Hoist Development History Famous Brand Hand Chain Hoist