Crane rails are rails used for lifting heavy objects, usually made of high-quality low-alloy high-strength steel, with high tensile strength, wear resistance, and fatigue resistance, and can adapt to various weather conditions and usage environments.
1. Material
The material of steel rails for cranes is usually high-quality low-alloy high-strength steel, such as Q345B, Q235B, etc.
2. Specifications
The specifications of steel rails for cranes are generally in the shape of an "8". Depending on different load conditions and usage scenarios, there are also steel rails named "38", "43", etc. The specifications are as follows:
Rail height (mm): 120, 130, 140, 150, 160, 170
Rail waist (bottom) width (mm): 70, 80, 90, 100, 110
Rail body (top) width (mm): 114, 120, 126, 134, 140, 150
3. Strength
The strength requirements for steel rails used in cranes should comply with the national standard GB2585-2007 "Crane Steel Rails", which mainly includes the following aspects:
(1) Static load strength: When the contact length between the rail shoulder and the rail bottom is 120mm, the allowable static load strength should not be less than 83KN
(2) Dynamic load strength: When the contact length between the rail shoulder and the rail bottom is 120mm, the allowable dynamic load strength should not be less than 116KN
(3) Fatigue strength: should meet the fatigue strength requirements of relevant standards
