Engineering Block

In the face of the traditional pulley sheave defects, Tongli design team decided to upgrade the sheave，

the key component of det ermining t he s ervice l ife of t he pu lley. Accor ding t o t he i nternational

standard, and combining with China's JB/T9007.2-1999 standard, successfully developed the" single

plate of hot rolled steel wheel heavy multi wheel lifting pulley, has been used in the Three Gorges

Project, Shanghai port more than 1000 large projects.

Technique Advantages：

1. Hot rolled steel roller skater is the replacement product of traditional cast iron and cast steel roller skater. To avoid the common

slide cast iron wheel easily broken phenomenon, is our company design center independently developed the patented products,

to fill the domestic gap.

2. The product has the advantages of high pressure, large load, short production cycle, beautiful appearance, durable, safe and

reliable.

3. The pulley of this product is a hot-rolled steel wheel made by advanced International technology. It has reasonable structure,

high load, high bearing pressure and reduced friction with wire rope.

Certificates：

1. The technology of making hot rolled steel wheel won the second national patent technology "invention award" second prize.

2. Hot rolled steel wheel won the National intellectual property office sponsored by the Chinese patent 20 years of outstanding

results show "gold award".

Application Cases：

Large scale hot rolled steel wheel pulley has been applied to large hoisting works such as coal mines, bridges, ports and wharfs,

and has played a role of safety assurance to a greater extent.

We guide the development of China's pulley industry with unique innovative advantages.